GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/fftools/ffplay.c Lines: 0 2077 0.0 %
Date: 2020-09-28 00:47:38 Branches: 0 1431 0.0 %

Line Branch Exec Source
1
/*
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 * Copyright (c) 2003 Fabrice Bellard
3
 *
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 * This file is part of FFmpeg.
5
 *
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 * FFmpeg is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
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 * You should have received a copy of the GNU Lesser General Public
17
 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
 */
20
21
/**
22
 * @file
23
 * simple media player based on the FFmpeg libraries
24
 */
25
26
#include "config.h"
27
#include <inttypes.h>
28
#include <math.h>
29
#include <limits.h>
30
#include <signal.h>
31
#include <stdint.h>
32
33
#include "libavutil/avstring.h"
34
#include "libavutil/eval.h"
35
#include "libavutil/mathematics.h"
36
#include "libavutil/pixdesc.h"
37
#include "libavutil/imgutils.h"
38
#include "libavutil/dict.h"
39
#include "libavutil/parseutils.h"
40
#include "libavutil/samplefmt.h"
41
#include "libavutil/avassert.h"
42
#include "libavutil/time.h"
43
#include "libavutil/bprint.h"
44
#include "libavformat/avformat.h"
45
#include "libavdevice/avdevice.h"
46
#include "libswscale/swscale.h"
47
#include "libavutil/opt.h"
48
#include "libavcodec/avfft.h"
49
#include "libswresample/swresample.h"
50
51
#if CONFIG_AVFILTER
52
# include "libavfilter/avfilter.h"
53
# include "libavfilter/buffersink.h"
54
# include "libavfilter/buffersrc.h"
55
#endif
56
57
#include <SDL.h>
58
#include <SDL_thread.h>
59
60
#include "cmdutils.h"
61
62
#include <assert.h>
63
64
const char program_name[] = "ffplay";
65
const int program_birth_year = 2003;
66
67
#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68
#define MIN_FRAMES 25
69
#define EXTERNAL_CLOCK_MIN_FRAMES 2
70
#define EXTERNAL_CLOCK_MAX_FRAMES 10
71
72
/* Minimum SDL audio buffer size, in samples. */
73
#define SDL_AUDIO_MIN_BUFFER_SIZE 512
74
/* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
75
#define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
76
77
/* Step size for volume control in dB */
78
#define SDL_VOLUME_STEP (0.75)
79
80
/* no AV sync correction is done if below the minimum AV sync threshold */
81
#define AV_SYNC_THRESHOLD_MIN 0.04
82
/* AV sync correction is done if above the maximum AV sync threshold */
83
#define AV_SYNC_THRESHOLD_MAX 0.1
84
/* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
85
#define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
86
/* no AV correction is done if too big error */
87
#define AV_NOSYNC_THRESHOLD 10.0
88
89
/* maximum audio speed change to get correct sync */
90
#define SAMPLE_CORRECTION_PERCENT_MAX 10
91
92
/* external clock speed adjustment constants for realtime sources based on buffer fullness */
93
#define EXTERNAL_CLOCK_SPEED_MIN  0.900
94
#define EXTERNAL_CLOCK_SPEED_MAX  1.010
95
#define EXTERNAL_CLOCK_SPEED_STEP 0.001
96
97
/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
98
#define AUDIO_DIFF_AVG_NB   20
99
100
/* polls for possible required screen refresh at least this often, should be less than 1/fps */
101
#define REFRESH_RATE 0.01
102
103
/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
104
/* TODO: We assume that a decoded and resampled frame fits into this buffer */
105
#define SAMPLE_ARRAY_SIZE (8 * 65536)
106
107
#define CURSOR_HIDE_DELAY 1000000
108
109
#define USE_ONEPASS_SUBTITLE_RENDER 1
110
111
static unsigned sws_flags = SWS_BICUBIC;
112
113
typedef struct MyAVPacketList {
114
    AVPacket pkt;
115
    struct MyAVPacketList *next;
116
    int serial;
117
} MyAVPacketList;
118
119
typedef struct PacketQueue {
120
    MyAVPacketList *first_pkt, *last_pkt;
121
    int nb_packets;
122
    int size;
123
    int64_t duration;
124
    int abort_request;
125
    int serial;
126
    SDL_mutex *mutex;
127
    SDL_cond *cond;
128
} PacketQueue;
129
130
#define VIDEO_PICTURE_QUEUE_SIZE 3
131
#define SUBPICTURE_QUEUE_SIZE 16
132
#define SAMPLE_QUEUE_SIZE 9
133
#define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
134
135
typedef struct AudioParams {
136
    int freq;
137
    int channels;
138
    int64_t channel_layout;
139
    enum AVSampleFormat fmt;
140
    int frame_size;
141
    int bytes_per_sec;
142
} AudioParams;
143
144
typedef struct Clock {
145
    double pts;           /* clock base */
146
    double pts_drift;     /* clock base minus time at which we updated the clock */
147
    double last_updated;
148
    double speed;
149
    int serial;           /* clock is based on a packet with this serial */
150
    int paused;
151
    int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
152
} Clock;
153
154
/* Common struct for handling all types of decoded data and allocated render buffers. */
155
typedef struct Frame {
156
    AVFrame *frame;
157
    AVSubtitle sub;
158
    int serial;
159
    double pts;           /* presentation timestamp for the frame */
160
    double duration;      /* estimated duration of the frame */
161
    int64_t pos;          /* byte position of the frame in the input file */
162
    int width;
163
    int height;
164
    int format;
165
    AVRational sar;
166
    int uploaded;
167
    int flip_v;
168
} Frame;
169
170
typedef struct FrameQueue {
171
    Frame queue[FRAME_QUEUE_SIZE];
172
    int rindex;
173
    int windex;
174
    int size;
175
    int max_size;
176
    int keep_last;
177
    int rindex_shown;
178
    SDL_mutex *mutex;
179
    SDL_cond *cond;
180
    PacketQueue *pktq;
181
} FrameQueue;
182
183
enum {
184
    AV_SYNC_AUDIO_MASTER, /* default choice */
185
    AV_SYNC_VIDEO_MASTER,
186
    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
187
};
188
189
typedef struct Decoder {
190
    AVPacket pkt;
191
    PacketQueue *queue;
192
    AVCodecContext *avctx;
193
    int pkt_serial;
194
    int finished;
195
    int packet_pending;
196
    SDL_cond *empty_queue_cond;
197
    int64_t start_pts;
198
    AVRational start_pts_tb;
199
    int64_t next_pts;
200
    AVRational next_pts_tb;
201
    SDL_Thread *decoder_tid;
202
} Decoder;
203
204
typedef struct VideoState {
205
    SDL_Thread *read_tid;
206
    AVInputFormat *iformat;
207
    int abort_request;
208
    int force_refresh;
209
    int paused;
210
    int last_paused;
211
    int queue_attachments_req;
212
    int seek_req;
213
    int seek_flags;
214
    int64_t seek_pos;
215
    int64_t seek_rel;
216
    int read_pause_return;
217
    AVFormatContext *ic;
218
    int realtime;
219
220
    Clock audclk;
221
    Clock vidclk;
222
    Clock extclk;
223
224
    FrameQueue pictq;
225
    FrameQueue subpq;
226
    FrameQueue sampq;
227
228
    Decoder auddec;
229
    Decoder viddec;
230
    Decoder subdec;
231
232
    int audio_stream;
233
234
    int av_sync_type;
235
236
    double audio_clock;
237
    int audio_clock_serial;
238
    double audio_diff_cum; /* used for AV difference average computation */
239
    double audio_diff_avg_coef;
240
    double audio_diff_threshold;
241
    int audio_diff_avg_count;
242
    AVStream *audio_st;
243
    PacketQueue audioq;
244
    int audio_hw_buf_size;
245
    uint8_t *audio_buf;
246
    uint8_t *audio_buf1;
247
    unsigned int audio_buf_size; /* in bytes */
248
    unsigned int audio_buf1_size;
249
    int audio_buf_index; /* in bytes */
250
    int audio_write_buf_size;
251
    int audio_volume;
252
    int muted;
253
    struct AudioParams audio_src;
254
#if CONFIG_AVFILTER
255
    struct AudioParams audio_filter_src;
256
#endif
257
    struct AudioParams audio_tgt;
258
    struct SwrContext *swr_ctx;
259
    int frame_drops_early;
260
    int frame_drops_late;
261
262
    enum ShowMode {
263
        SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
264
    } show_mode;
265
    int16_t sample_array[SAMPLE_ARRAY_SIZE];
266
    int sample_array_index;
267
    int last_i_start;
268
    RDFTContext *rdft;
269
    int rdft_bits;
270
    FFTSample *rdft_data;
271
    int xpos;
272
    double last_vis_time;
273
    SDL_Texture *vis_texture;
274
    SDL_Texture *sub_texture;
275
    SDL_Texture *vid_texture;
276
277
    int subtitle_stream;
278
    AVStream *subtitle_st;
279
    PacketQueue subtitleq;
280
281
    double frame_timer;
282
    double frame_last_returned_time;
283
    double frame_last_filter_delay;
284
    int video_stream;
285
    AVStream *video_st;
286
    PacketQueue videoq;
287
    double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
288
    struct SwsContext *img_convert_ctx;
289
    struct SwsContext *sub_convert_ctx;
290
    int eof;
291
292
    char *filename;
293
    int width, height, xleft, ytop;
294
    int step;
295
296
#if CONFIG_AVFILTER
297
    int vfilter_idx;
298
    AVFilterContext *in_video_filter;   // the first filter in the video chain
299
    AVFilterContext *out_video_filter;  // the last filter in the video chain
300
    AVFilterContext *in_audio_filter;   // the first filter in the audio chain
301
    AVFilterContext *out_audio_filter;  // the last filter in the audio chain
302
    AVFilterGraph *agraph;              // audio filter graph
303
#endif
304
305
    int last_video_stream, last_audio_stream, last_subtitle_stream;
306
307
    SDL_cond *continue_read_thread;
308
} VideoState;
309
310
/* options specified by the user */
311
static AVInputFormat *file_iformat;
312
static const char *input_filename;
313
static const char *window_title;
314
static int default_width  = 640;
315
static int default_height = 480;
316
static int screen_width  = 0;
317
static int screen_height = 0;
318
static int screen_left = SDL_WINDOWPOS_CENTERED;
319
static int screen_top = SDL_WINDOWPOS_CENTERED;
320
static int audio_disable;
321
static int video_disable;
322
static int subtitle_disable;
323
static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
324
static int seek_by_bytes = -1;
325
static float seek_interval = 10;
326
static int display_disable;
327
static int borderless;
328
static int alwaysontop;
329
static int startup_volume = 100;
330
static int show_status = -1;
331
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
332
static int64_t start_time = AV_NOPTS_VALUE;
333
static int64_t duration = AV_NOPTS_VALUE;
334
static int fast = 0;
335
static int genpts = 0;
336
static int lowres = 0;
337
static int decoder_reorder_pts = -1;
338
static int autoexit;
339
static int exit_on_keydown;
340
static int exit_on_mousedown;
341
static int loop = 1;
342
static int framedrop = -1;
343
static int infinite_buffer = -1;
344
static enum ShowMode show_mode = SHOW_MODE_NONE;
345
static const char *audio_codec_name;
346
static const char *subtitle_codec_name;
347
static const char *video_codec_name;
348
double rdftspeed = 0.02;
349
static int64_t cursor_last_shown;
350
static int cursor_hidden = 0;
351
#if CONFIG_AVFILTER
352
static const char **vfilters_list = NULL;
353
static int nb_vfilters = 0;
354
static char *afilters = NULL;
355
#endif
356
static int autorotate = 1;
357
static int find_stream_info = 1;
358
static int filter_nbthreads = 0;
359
360
/* current context */
361
static int is_full_screen;
362
static int64_t audio_callback_time;
363
364
static AVPacket flush_pkt;
365
366
#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
367
368
static SDL_Window *window;
369
static SDL_Renderer *renderer;
370
static SDL_RendererInfo renderer_info = {0};
371
static SDL_AudioDeviceID audio_dev;
372
373
static const struct TextureFormatEntry {
374
    enum AVPixelFormat format;
375
    int texture_fmt;
376
} sdl_texture_format_map[] = {
377
    { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
378
    { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
379
    { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
380
    { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
381
    { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
382
    { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
383
    { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
384
    { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
385
    { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
386
    { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
387
    { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
388
    { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
389
    { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
390
    { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
391
    { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
392
    { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
393
    { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
394
    { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
395
    { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
396
    { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
397
};
398
399
#if CONFIG_AVFILTER
400
static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
401
{
402
    GROW_ARRAY(vfilters_list, nb_vfilters);
403
    vfilters_list[nb_vfilters - 1] = arg;
404
    return 0;
405
}
406
#endif
407
408
static inline
409
int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
410
                   enum AVSampleFormat fmt2, int64_t channel_count2)
411
{
412
    /* If channel count == 1, planar and non-planar formats are the same */
413
    if (channel_count1 == 1 && channel_count2 == 1)
414
        return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
415
    else
416
        return channel_count1 != channel_count2 || fmt1 != fmt2;
417
}
418
419
static inline
420
int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
421
{
422
    if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
423
        return channel_layout;
424
    else
425
        return 0;
426
}
427
428
static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
429
{
430
    MyAVPacketList *pkt1;
431
432
    if (q->abort_request)
433
       return -1;
434
435
    pkt1 = av_malloc(sizeof(MyAVPacketList));
436
    if (!pkt1)
437
        return -1;
438
    pkt1->pkt = *pkt;
439
    pkt1->next = NULL;
440
    if (pkt == &flush_pkt)
441
        q->serial++;
442
    pkt1->serial = q->serial;
443
444
    if (!q->last_pkt)
445
        q->first_pkt = pkt1;
446
    else
447
        q->last_pkt->next = pkt1;
448
    q->last_pkt = pkt1;
449
    q->nb_packets++;
450
    q->size += pkt1->pkt.size + sizeof(*pkt1);
451
    q->duration += pkt1->pkt.duration;
452
    /* XXX: should duplicate packet data in DV case */
453
    SDL_CondSignal(q->cond);
454
    return 0;
455
}
456
457
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
458
{
459
    int ret;
460
461
    SDL_LockMutex(q->mutex);
462
    ret = packet_queue_put_private(q, pkt);
463
    SDL_UnlockMutex(q->mutex);
464
465
    if (pkt != &flush_pkt && ret < 0)
466
        av_packet_unref(pkt);
467
468
    return ret;
469
}
470
471
static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
472
{
473
    AVPacket pkt1, *pkt = &pkt1;
474
    av_init_packet(pkt);
475
    pkt->data = NULL;
476
    pkt->size = 0;
477
    pkt->stream_index = stream_index;
478
    return packet_queue_put(q, pkt);
479
}
480
481
/* packet queue handling */
482
static int packet_queue_init(PacketQueue *q)
483
{
484
    memset(q, 0, sizeof(PacketQueue));
485
    q->mutex = SDL_CreateMutex();
486
    if (!q->mutex) {
487
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
488
        return AVERROR(ENOMEM);
489
    }
490
    q->cond = SDL_CreateCond();
491
    if (!q->cond) {
492
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
493
        return AVERROR(ENOMEM);
494
    }
495
    q->abort_request = 1;
496
    return 0;
497
}
498
499
static void packet_queue_flush(PacketQueue *q)
500
{
501
    MyAVPacketList *pkt, *pkt1;
502
503
    SDL_LockMutex(q->mutex);
504
    for (pkt = q->first_pkt; pkt; pkt = pkt1) {
505
        pkt1 = pkt->next;
506
        av_packet_unref(&pkt->pkt);
507
        av_freep(&pkt);
508
    }
509
    q->last_pkt = NULL;
510
    q->first_pkt = NULL;
511
    q->nb_packets = 0;
512
    q->size = 0;
513
    q->duration = 0;
514
    SDL_UnlockMutex(q->mutex);
515
}
516
517
static void packet_queue_destroy(PacketQueue *q)
518
{
519
    packet_queue_flush(q);
520
    SDL_DestroyMutex(q->mutex);
521
    SDL_DestroyCond(q->cond);
522
}
523
524
static void packet_queue_abort(PacketQueue *q)
525
{
526
    SDL_LockMutex(q->mutex);
527
528
    q->abort_request = 1;
529
530
    SDL_CondSignal(q->cond);
531
532
    SDL_UnlockMutex(q->mutex);
533
}
534
535
static void packet_queue_start(PacketQueue *q)
536
{
537
    SDL_LockMutex(q->mutex);
538
    q->abort_request = 0;
539
    packet_queue_put_private(q, &flush_pkt);
540
    SDL_UnlockMutex(q->mutex);
541
}
542
543
/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
544
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
545
{
546
    MyAVPacketList *pkt1;
547
    int ret;
548
549
    SDL_LockMutex(q->mutex);
550
551
    for (;;) {
552
        if (q->abort_request) {
553
            ret = -1;
554
            break;
555
        }
556
557
        pkt1 = q->first_pkt;
558
        if (pkt1) {
559
            q->first_pkt = pkt1->next;
560
            if (!q->first_pkt)
561
                q->last_pkt = NULL;
562
            q->nb_packets--;
563
            q->size -= pkt1->pkt.size + sizeof(*pkt1);
564
            q->duration -= pkt1->pkt.duration;
565
            *pkt = pkt1->pkt;
566
            if (serial)
567
                *serial = pkt1->serial;
568
            av_free(pkt1);
569
            ret = 1;
570
            break;
571
        } else if (!block) {
572
            ret = 0;
573
            break;
574
        } else {
575
            SDL_CondWait(q->cond, q->mutex);
576
        }
577
    }
578
    SDL_UnlockMutex(q->mutex);
579
    return ret;
580
}
581
582
static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
583
    memset(d, 0, sizeof(Decoder));
584
    d->avctx = avctx;
585
    d->queue = queue;
586
    d->empty_queue_cond = empty_queue_cond;
587
    d->start_pts = AV_NOPTS_VALUE;
588
    d->pkt_serial = -1;
589
}
590
591
static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
592
    int ret = AVERROR(EAGAIN);
593
594
    for (;;) {
595
        AVPacket pkt;
596
597
        if (d->queue->serial == d->pkt_serial) {
598
            do {
599
                if (d->queue->abort_request)
600
                    return -1;
601
602
                switch (d->avctx->codec_type) {
603
                    case AVMEDIA_TYPE_VIDEO:
604
                        ret = avcodec_receive_frame(d->avctx, frame);
605
                        if (ret >= 0) {
606
                            if (decoder_reorder_pts == -1) {
607
                                frame->pts = frame->best_effort_timestamp;
608
                            } else if (!decoder_reorder_pts) {
609
                                frame->pts = frame->pkt_dts;
610
                            }
611
                        }
612
                        break;
613
                    case AVMEDIA_TYPE_AUDIO:
614
                        ret = avcodec_receive_frame(d->avctx, frame);
615
                        if (ret >= 0) {
616
                            AVRational tb = (AVRational){1, frame->sample_rate};
617
                            if (frame->pts != AV_NOPTS_VALUE)
618
                                frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
619
                            else if (d->next_pts != AV_NOPTS_VALUE)
620
                                frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
621
                            if (frame->pts != AV_NOPTS_VALUE) {
622
                                d->next_pts = frame->pts + frame->nb_samples;
623
                                d->next_pts_tb = tb;
624
                            }
625
                        }
626
                        break;
627
                }
628
                if (ret == AVERROR_EOF) {
629
                    d->finished = d->pkt_serial;
630
                    avcodec_flush_buffers(d->avctx);
631
                    return 0;
632
                }
633
                if (ret >= 0)
634
                    return 1;
635
            } while (ret != AVERROR(EAGAIN));
636
        }
637
638
        do {
639
            if (d->queue->nb_packets == 0)
640
                SDL_CondSignal(d->empty_queue_cond);
641
            if (d->packet_pending) {
642
                av_packet_move_ref(&pkt, &d->pkt);
643
                d->packet_pending = 0;
644
            } else {
645
                if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
646
                    return -1;
647
            }
648
            if (d->queue->serial == d->pkt_serial)
649
                break;
650
            av_packet_unref(&pkt);
651
        } while (1);
652
653
        if (pkt.data == flush_pkt.data) {
654
            avcodec_flush_buffers(d->avctx);
655
            d->finished = 0;
656
            d->next_pts = d->start_pts;
657
            d->next_pts_tb = d->start_pts_tb;
658
        } else {
659
            if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
660
                int got_frame = 0;
661
                ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
662
                if (ret < 0) {
663
                    ret = AVERROR(EAGAIN);
664
                } else {
665
                    if (got_frame && !pkt.data) {
666
                       d->packet_pending = 1;
667
                       av_packet_move_ref(&d->pkt, &pkt);
668
                    }
669
                    ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
670
                }
671
            } else {
672
                if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
673
                    av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
674
                    d->packet_pending = 1;
675
                    av_packet_move_ref(&d->pkt, &pkt);
676
                }
677
            }
678
            av_packet_unref(&pkt);
679
        }
680
    }
681
}
682
683
static void decoder_destroy(Decoder *d) {
684
    av_packet_unref(&d->pkt);
685
    avcodec_free_context(&d->avctx);
686
}
687
688
static void frame_queue_unref_item(Frame *vp)
689
{
690
    av_frame_unref(vp->frame);
691
    avsubtitle_free(&vp->sub);
692
}
693
694
static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
695
{
696
    int i;
697
    memset(f, 0, sizeof(FrameQueue));
698
    if (!(f->mutex = SDL_CreateMutex())) {
699
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
700
        return AVERROR(ENOMEM);
701
    }
702
    if (!(f->cond = SDL_CreateCond())) {
703
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
704
        return AVERROR(ENOMEM);
705
    }
706
    f->pktq = pktq;
707
    f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
708
    f->keep_last = !!keep_last;
709
    for (i = 0; i < f->max_size; i++)
710
        if (!(f->queue[i].frame = av_frame_alloc()))
711
            return AVERROR(ENOMEM);
712
    return 0;
713
}
714
715
static void frame_queue_destory(FrameQueue *f)
716
{
717
    int i;
718
    for (i = 0; i < f->max_size; i++) {
719
        Frame *vp = &f->queue[i];
720
        frame_queue_unref_item(vp);
721
        av_frame_free(&vp->frame);
722
    }
723
    SDL_DestroyMutex(f->mutex);
724
    SDL_DestroyCond(f->cond);
725
}
726
727
static void frame_queue_signal(FrameQueue *f)
728
{
729
    SDL_LockMutex(f->mutex);
730
    SDL_CondSignal(f->cond);
731
    SDL_UnlockMutex(f->mutex);
732
}
733
734
static Frame *frame_queue_peek(FrameQueue *f)
735
{
736
    return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
737
}
738
739
static Frame *frame_queue_peek_next(FrameQueue *f)
740
{
741
    return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
742
}
743
744
static Frame *frame_queue_peek_last(FrameQueue *f)
745
{
746
    return &f->queue[f->rindex];
747
}
748
749
static Frame *frame_queue_peek_writable(FrameQueue *f)
750
{
751
    /* wait until we have space to put a new frame */
752
    SDL_LockMutex(f->mutex);
753
    while (f->size >= f->max_size &&
754
           !f->pktq->abort_request) {
755
        SDL_CondWait(f->cond, f->mutex);
756
    }
757
    SDL_UnlockMutex(f->mutex);
758
759
    if (f->pktq->abort_request)
760
        return NULL;
761
762
    return &f->queue[f->windex];
763
}
764
765
static Frame *frame_queue_peek_readable(FrameQueue *f)
766
{
767
    /* wait until we have a readable a new frame */
768
    SDL_LockMutex(f->mutex);
769
    while (f->size - f->rindex_shown <= 0 &&
770
           !f->pktq->abort_request) {
771
        SDL_CondWait(f->cond, f->mutex);
772
    }
773
    SDL_UnlockMutex(f->mutex);
774
775
    if (f->pktq->abort_request)
776
        return NULL;
777
778
    return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
779
}
780
781
static void frame_queue_push(FrameQueue *f)
782
{
783
    if (++f->windex == f->max_size)
784
        f->windex = 0;
785
    SDL_LockMutex(f->mutex);
786
    f->size++;
787
    SDL_CondSignal(f->cond);
788
    SDL_UnlockMutex(f->mutex);
789
}
790
791
static void frame_queue_next(FrameQueue *f)
792
{
793
    if (f->keep_last && !f->rindex_shown) {
794
        f->rindex_shown = 1;
795
        return;
796
    }
797
    frame_queue_unref_item(&f->queue[f->rindex]);
798
    if (++f->rindex == f->max_size)
799
        f->rindex = 0;
800
    SDL_LockMutex(f->mutex);
801
    f->size--;
802
    SDL_CondSignal(f->cond);
803
    SDL_UnlockMutex(f->mutex);
804
}
805
806
/* return the number of undisplayed frames in the queue */
807
static int frame_queue_nb_remaining(FrameQueue *f)
808
{
809
    return f->size - f->rindex_shown;
810
}
811
812
/* return last shown position */
813
static int64_t frame_queue_last_pos(FrameQueue *f)
814
{
815
    Frame *fp = &f->queue[f->rindex];
816
    if (f->rindex_shown && fp->serial == f->pktq->serial)
817
        return fp->pos;
818
    else
819
        return -1;
820
}
821
822
static void decoder_abort(Decoder *d, FrameQueue *fq)
823
{
824
    packet_queue_abort(d->queue);
825
    frame_queue_signal(fq);
826
    SDL_WaitThread(d->decoder_tid, NULL);
827
    d->decoder_tid = NULL;
828
    packet_queue_flush(d->queue);
829
}
830
831
static inline void fill_rectangle(int x, int y, int w, int h)
832
{
833
    SDL_Rect rect;
834
    rect.x = x;
835
    rect.y = y;
836
    rect.w = w;
837
    rect.h = h;
838
    if (w && h)
839
        SDL_RenderFillRect(renderer, &rect);
840
}
841
842
static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
843
{
844
    Uint32 format;
845
    int access, w, h;
846
    if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
847
        void *pixels;
848
        int pitch;
849
        if (*texture)
850
            SDL_DestroyTexture(*texture);
851
        if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
852
            return -1;
853
        if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
854
            return -1;
855
        if (init_texture) {
856
            if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
857
                return -1;
858
            memset(pixels, 0, pitch * new_height);
859
            SDL_UnlockTexture(*texture);
860
        }
861
        av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
862
    }
863
    return 0;
864
}
865
866
static void calculate_display_rect(SDL_Rect *rect,
867
                                   int scr_xleft, int scr_ytop, int scr_width, int scr_height,
868
                                   int pic_width, int pic_height, AVRational pic_sar)
869
{
870
    AVRational aspect_ratio = pic_sar;
871
    int64_t width, height, x, y;
872
873
    if (av_cmp_q(aspect_ratio, av_make_q(0, 1)) <= 0)
874
        aspect_ratio = av_make_q(1, 1);
875
876
    aspect_ratio = av_mul_q(aspect_ratio, av_make_q(pic_width, pic_height));
877
878
    /* XXX: we suppose the screen has a 1.0 pixel ratio */
879
    height = scr_height;
880
    width = av_rescale(height, aspect_ratio.num, aspect_ratio.den) & ~1;
881
    if (width > scr_width) {
882
        width = scr_width;
883
        height = av_rescale(width, aspect_ratio.den, aspect_ratio.num) & ~1;
884
    }
885
    x = (scr_width - width) / 2;
886
    y = (scr_height - height) / 2;
887
    rect->x = scr_xleft + x;
888
    rect->y = scr_ytop  + y;
889
    rect->w = FFMAX((int)width,  1);
890
    rect->h = FFMAX((int)height, 1);
891
}
892
893
static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
894
{
895
    int i;
896
    *sdl_blendmode = SDL_BLENDMODE_NONE;
897
    *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
898
    if (format == AV_PIX_FMT_RGB32   ||
899
        format == AV_PIX_FMT_RGB32_1 ||
900
        format == AV_PIX_FMT_BGR32   ||
901
        format == AV_PIX_FMT_BGR32_1)
902
        *sdl_blendmode = SDL_BLENDMODE_BLEND;
903
    for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
904
        if (format == sdl_texture_format_map[i].format) {
905
            *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
906
            return;
907
        }
908
    }
909
}
910
911
static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
912
    int ret = 0;
913
    Uint32 sdl_pix_fmt;
914
    SDL_BlendMode sdl_blendmode;
915
    get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
916
    if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
917
        return -1;
918
    switch (sdl_pix_fmt) {
919
        case SDL_PIXELFORMAT_UNKNOWN:
920
            /* This should only happen if we are not using avfilter... */
921
            *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
922
                frame->width, frame->height, frame->format, frame->width, frame->height,
923
                AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
924
            if (*img_convert_ctx != NULL) {
925
                uint8_t *pixels[4];
926
                int pitch[4];
927
                if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
928
                    sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
929
                              0, frame->height, pixels, pitch);
930
                    SDL_UnlockTexture(*tex);
931
                }
932
            } else {
933
                av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
934
                ret = -1;
935
            }
936
            break;
937
        case SDL_PIXELFORMAT_IYUV:
938
            if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
939
                ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
940
                                                       frame->data[1], frame->linesize[1],
941
                                                       frame->data[2], frame->linesize[2]);
942
            } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
943
                ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
944
                                                       frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
945
                                                       frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
946
            } else {
947
                av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
948
                return -1;
949
            }
950
            break;
951
        default:
952
            if (frame->linesize[0] < 0) {
953
                ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
954
            } else {
955
                ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
956
            }
957
            break;
958
    }
959
    return ret;
960
}
961
962
static void set_sdl_yuv_conversion_mode(AVFrame *frame)
963
{
964
#if SDL_VERSION_ATLEAST(2,0,8)
965
    SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
966
    if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
967
        if (frame->color_range == AVCOL_RANGE_JPEG)
968
            mode = SDL_YUV_CONVERSION_JPEG;
969
        else if (frame->colorspace == AVCOL_SPC_BT709)
970
            mode = SDL_YUV_CONVERSION_BT709;
971
        else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
972
            mode = SDL_YUV_CONVERSION_BT601;
973
    }
974
    SDL_SetYUVConversionMode(mode);
975
#endif
976
}
977
978
static void video_image_display(VideoState *is)
979
{
980
    Frame *vp;
981
    Frame *sp = NULL;
982
    SDL_Rect rect;
983
984
    vp = frame_queue_peek_last(&is->pictq);
985
    if (is->subtitle_st) {
986
        if (frame_queue_nb_remaining(&is->subpq) > 0) {
987
            sp = frame_queue_peek(&is->subpq);
988
989
            if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
990
                if (!sp->uploaded) {
991
                    uint8_t* pixels[4];
992
                    int pitch[4];
993
                    int i;
994
                    if (!sp->width || !sp->height) {
995
                        sp->width = vp->width;
996
                        sp->height = vp->height;
997
                    }
998
                    if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
999
                        return;
1000
1001
                    for (i = 0; i < sp->sub.num_rects; i++) {
1002
                        AVSubtitleRect *sub_rect = sp->sub.rects[i];
1003
1004
                        sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
1005
                        sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
1006
                        sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
1007
                        sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
1008
1009
                        is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
1010
                            sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
1011
                            sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
1012
                            0, NULL, NULL, NULL);
1013
                        if (!is->sub_convert_ctx) {
1014
                            av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1015
                            return;
1016
                        }
1017
                        if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
1018
                            sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
1019
                                      0, sub_rect->h, pixels, pitch);
1020
                            SDL_UnlockTexture(is->sub_texture);
1021
                        }
1022
                    }
1023
                    sp->uploaded = 1;
1024
                }
1025
            } else
1026
                sp = NULL;
1027
        }
1028
    }
1029
1030
    calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1031
1032
    if (!vp->uploaded) {
1033
        if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
1034
            return;
1035
        vp->uploaded = 1;
1036
        vp->flip_v = vp->frame->linesize[0] < 0;
1037
    }
1038
1039
    set_sdl_yuv_conversion_mode(vp->frame);
1040
    SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
1041
    set_sdl_yuv_conversion_mode(NULL);
1042
    if (sp) {
1043
#if USE_ONEPASS_SUBTITLE_RENDER
1044
        SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
1045
#else
1046
        int i;
1047
        double xratio = (double)rect.w / (double)sp->width;
1048
        double yratio = (double)rect.h / (double)sp->height;
1049
        for (i = 0; i < sp->sub.num_rects; i++) {
1050
            SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
1051
            SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
1052
                               .y = rect.y + sub_rect->y * yratio,
1053
                               .w = sub_rect->w * xratio,
1054
                               .h = sub_rect->h * yratio};
1055
            SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
1056
        }
1057
#endif
1058
    }
1059
}
1060
1061
static inline int compute_mod(int a, int b)
1062
{
1063
    return a < 0 ? a%b + b : a%b;
1064
}
1065
1066
static void video_audio_display(VideoState *s)
1067
{
1068
    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1069
    int ch, channels, h, h2;
1070
    int64_t time_diff;
1071
    int rdft_bits, nb_freq;
1072
1073
    for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1074
        ;
1075
    nb_freq = 1 << (rdft_bits - 1);
1076
1077
    /* compute display index : center on currently output samples */
1078
    channels = s->audio_tgt.channels;
1079
    nb_display_channels = channels;
1080
    if (!s->paused) {
1081
        int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1082
        n = 2 * channels;
1083
        delay = s->audio_write_buf_size;
1084
        delay /= n;
1085
1086
        /* to be more precise, we take into account the time spent since
1087
           the last buffer computation */
1088
        if (audio_callback_time) {
1089
            time_diff = av_gettime_relative() - audio_callback_time;
1090
            delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1091
        }
1092
1093
        delay += 2 * data_used;
1094
        if (delay < data_used)
1095
            delay = data_used;
1096
1097
        i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1098
        if (s->show_mode == SHOW_MODE_WAVES) {
1099
            h = INT_MIN;
1100
            for (i = 0; i < 1000; i += channels) {
1101
                int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1102
                int a = s->sample_array[idx];
1103
                int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1104
                int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1105
                int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1106
                int score = a - d;
1107
                if (h < score && (b ^ c) < 0) {
1108
                    h = score;
1109
                    i_start = idx;
1110
                }
1111
            }
1112
        }
1113
1114
        s->last_i_start = i_start;
1115
    } else {
1116
        i_start = s->last_i_start;
1117
    }
1118
1119
    if (s->show_mode == SHOW_MODE_WAVES) {
1120
        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1121
1122
        /* total height for one channel */
1123
        h = s->height / nb_display_channels;
1124
        /* graph height / 2 */
1125
        h2 = (h * 9) / 20;
1126
        for (ch = 0; ch < nb_display_channels; ch++) {
1127
            i = i_start + ch;
1128
            y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1129
            for (x = 0; x < s->width; x++) {
1130
                y = (s->sample_array[i] * h2) >> 15;
1131
                if (y < 0) {
1132
                    y = -y;
1133
                    ys = y1 - y;
1134
                } else {
1135
                    ys = y1;
1136
                }
1137
                fill_rectangle(s->xleft + x, ys, 1, y);
1138
                i += channels;
1139
                if (i >= SAMPLE_ARRAY_SIZE)
1140
                    i -= SAMPLE_ARRAY_SIZE;
1141
            }
1142
        }
1143
1144
        SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1145
1146
        for (ch = 1; ch < nb_display_channels; ch++) {
1147
            y = s->ytop + ch * h;
1148
            fill_rectangle(s->xleft, y, s->width, 1);
1149
        }
1150
    } else {
1151
        if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1152
            return;
1153
1154
        nb_display_channels= FFMIN(nb_display_channels, 2);
1155
        if (rdft_bits != s->rdft_bits) {
1156
            av_rdft_end(s->rdft);
1157
            av_free(s->rdft_data);
1158
            s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1159
            s->rdft_bits = rdft_bits;
1160
            s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1161
        }
1162
        if (!s->rdft || !s->rdft_data){
1163
            av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1164
            s->show_mode = SHOW_MODE_WAVES;
1165
        } else {
1166
            FFTSample *data[2];
1167
            SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1168
            uint32_t *pixels;
1169
            int pitch;
1170
            for (ch = 0; ch < nb_display_channels; ch++) {
1171
                data[ch] = s->rdft_data + 2 * nb_freq * ch;
1172
                i = i_start + ch;
1173
                for (x = 0; x < 2 * nb_freq; x++) {
1174
                    double w = (x-nb_freq) * (1.0 / nb_freq);
1175
                    data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1176
                    i += channels;
1177
                    if (i >= SAMPLE_ARRAY_SIZE)
1178
                        i -= SAMPLE_ARRAY_SIZE;
1179
                }
1180
                av_rdft_calc(s->rdft, data[ch]);
1181
            }
1182
            /* Least efficient way to do this, we should of course
1183
             * directly access it but it is more than fast enough. */
1184
            if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1185
                pitch >>= 2;
1186
                pixels += pitch * s->height;
1187
                for (y = 0; y < s->height; y++) {
1188
                    double w = 1 / sqrt(nb_freq);
1189
                    int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
1190
                    int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1191
                                                        : a;
1192
                    a = FFMIN(a, 255);
1193
                    b = FFMIN(b, 255);
1194
                    pixels -= pitch;
1195
                    *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1196
                }
1197
                SDL_UnlockTexture(s->vis_texture);
1198
            }
1199
            SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1200
        }
1201
        if (!s->paused)
1202
            s->xpos++;
1203
        if (s->xpos >= s->width)
1204
            s->xpos= s->xleft;
1205
    }
1206
}
1207
1208
static void stream_component_close(VideoState *is, int stream_index)
1209
{
1210
    AVFormatContext *ic = is->ic;
1211
    AVCodecParameters *codecpar;
1212
1213
    if (stream_index < 0 || stream_index >= ic->nb_streams)
1214
        return;
1215
    codecpar = ic->streams[stream_index]->codecpar;
1216
1217
    switch (codecpar->codec_type) {
1218
    case AVMEDIA_TYPE_AUDIO:
1219
        decoder_abort(&is->auddec, &is->sampq);
1220
        SDL_CloseAudioDevice(audio_dev);
1221
        decoder_destroy(&is->auddec);
1222
        swr_free(&is->swr_ctx);
1223
        av_freep(&is->audio_buf1);
1224
        is->audio_buf1_size = 0;
1225
        is->audio_buf = NULL;
1226
1227
        if (is->rdft) {
1228
            av_rdft_end(is->rdft);
1229
            av_freep(&is->rdft_data);
1230
            is->rdft = NULL;
1231
            is->rdft_bits = 0;
1232
        }
1233
        break;
1234
    case AVMEDIA_TYPE_VIDEO:
1235
        decoder_abort(&is->viddec, &is->pictq);
1236
        decoder_destroy(&is->viddec);
1237
        break;
1238
    case AVMEDIA_TYPE_SUBTITLE:
1239
        decoder_abort(&is->subdec, &is->subpq);
1240
        decoder_destroy(&is->subdec);
1241
        break;
1242
    default:
1243
        break;
1244
    }
1245
1246
    ic->streams[stream_index]->discard = AVDISCARD_ALL;
1247
    switch (codecpar->codec_type) {
1248
    case AVMEDIA_TYPE_AUDIO:
1249
        is->audio_st = NULL;
1250
        is->audio_stream = -1;
1251
        break;
1252
    case AVMEDIA_TYPE_VIDEO:
1253
        is->video_st = NULL;
1254
        is->video_stream = -1;
1255
        break;
1256
    case AVMEDIA_TYPE_SUBTITLE:
1257
        is->subtitle_st = NULL;
1258
        is->subtitle_stream = -1;
1259
        break;
1260
    default:
1261
        break;
1262
    }
1263
}
1264
1265
static void stream_close(VideoState *is)
1266
{
1267
    /* XXX: use a special url_shutdown call to abort parse cleanly */
1268
    is->abort_request = 1;
1269
    SDL_WaitThread(is->read_tid, NULL);
1270
1271
    /* close each stream */
1272
    if (is->audio_stream >= 0)
1273
        stream_component_close(is, is->audio_stream);
1274
    if (is->video_stream >= 0)
1275
        stream_component_close(is, is->video_stream);
1276
    if (is->subtitle_stream >= 0)
1277
        stream_component_close(is, is->subtitle_stream);
1278
1279
    avformat_close_input(&is->ic);
1280
1281
    packet_queue_destroy(&is->videoq);
1282
    packet_queue_destroy(&is->audioq);
1283
    packet_queue_destroy(&is->subtitleq);
1284
1285
    /* free all pictures */
1286
    frame_queue_destory(&is->pictq);
1287
    frame_queue_destory(&is->sampq);
1288
    frame_queue_destory(&is->subpq);
1289
    SDL_DestroyCond(is->continue_read_thread);
1290
    sws_freeContext(is->img_convert_ctx);
1291
    sws_freeContext(is->sub_convert_ctx);
1292
    av_free(is->filename);
1293
    if (is->vis_texture)
1294
        SDL_DestroyTexture(is->vis_texture);
1295
    if (is->vid_texture)
1296
        SDL_DestroyTexture(is->vid_texture);
1297
    if (is->sub_texture)
1298
        SDL_DestroyTexture(is->sub_texture);
1299
    av_free(is);
1300
}
1301
1302
static void do_exit(VideoState *is)
1303
{
1304
    if (is) {
1305
        stream_close(is);
1306
    }
1307
    if (renderer)
1308
        SDL_DestroyRenderer(renderer);
1309
    if (window)
1310
        SDL_DestroyWindow(window);
1311
    uninit_opts();
1312
#if CONFIG_AVFILTER
1313
    av_freep(&vfilters_list);
1314
#endif
1315
    avformat_network_deinit();
1316
    if (show_status)
1317
        printf("\n");
1318
    SDL_Quit();
1319
    av_log(NULL, AV_LOG_QUIET, "%s", "");
1320
    exit(0);
1321
}
1322
1323
static void sigterm_handler(int sig)
1324
{
1325
    exit(123);
1326
}
1327
1328
static void set_default_window_size(int width, int height, AVRational sar)
1329
{
1330
    SDL_Rect rect;
1331
    int max_width  = screen_width  ? screen_width  : INT_MAX;
1332
    int max_height = screen_height ? screen_height : INT_MAX;
1333
    if (max_width == INT_MAX && max_height == INT_MAX)
1334
        max_height = height;
1335
    calculate_display_rect(&rect, 0, 0, max_width, max_height, width, height, sar);
1336
    default_width  = rect.w;
1337
    default_height = rect.h;
1338
}
1339
1340
static int video_open(VideoState *is)
1341
{
1342
    int w,h;
1343
1344
    w = screen_width ? screen_width : default_width;
1345
    h = screen_height ? screen_height : default_height;
1346
1347
    if (!window_title)
1348
        window_title = input_filename;
1349
    SDL_SetWindowTitle(window, window_title);
1350
1351
    SDL_SetWindowSize(window, w, h);
1352
    SDL_SetWindowPosition(window, screen_left, screen_top);
1353
    if (is_full_screen)
1354
        SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
1355
    SDL_ShowWindow(window);
1356
1357
    is->width  = w;
1358
    is->height = h;
1359
1360
    return 0;
1361
}
1362
1363
/* display the current picture, if any */
1364
static void video_display(VideoState *is)
1365
{
1366
    if (!is->width)
1367
        video_open(is);
1368
1369
    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
1370
    SDL_RenderClear(renderer);
1371
    if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1372
        video_audio_display(is);
1373
    else if (is->video_st)
1374
        video_image_display(is);
1375
    SDL_RenderPresent(renderer);
1376
}
1377
1378
static double get_clock(Clock *c)
1379
{
1380
    if (*c->queue_serial != c->serial)
1381
        return NAN;
1382
    if (c->paused) {
1383
        return c->pts;
1384
    } else {
1385
        double time = av_gettime_relative() / 1000000.0;
1386
        return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1387
    }
1388
}
1389
1390
static void set_clock_at(Clock *c, double pts, int serial, double time)
1391
{
1392
    c->pts = pts;
1393
    c->last_updated = time;
1394
    c->pts_drift = c->pts - time;
1395
    c->serial = serial;
1396
}
1397
1398
static void set_clock(Clock *c, double pts, int serial)
1399
{
1400
    double time = av_gettime_relative() / 1000000.0;
1401
    set_clock_at(c, pts, serial, time);
1402
}
1403
1404
static void set_clock_speed(Clock *c, double speed)
1405
{
1406
    set_clock(c, get_clock(c), c->serial);
1407
    c->speed = speed;
1408
}
1409
1410
static void init_clock(Clock *c, int *queue_serial)
1411
{
1412
    c->speed = 1.0;
1413
    c->paused = 0;
1414
    c->queue_serial = queue_serial;
1415
    set_clock(c, NAN, -1);
1416
}
1417
1418
static void sync_clock_to_slave(Clock *c, Clock *slave)
1419
{
1420
    double clock = get_clock(c);
1421
    double slave_clock = get_clock(slave);
1422
    if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1423
        set_clock(c, slave_clock, slave->serial);
1424
}
1425
1426
static int get_master_sync_type(VideoState *is) {
1427
    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1428
        if (is->video_st)
1429
            return AV_SYNC_VIDEO_MASTER;
1430
        else
1431
            return AV_SYNC_AUDIO_MASTER;
1432
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1433
        if (is->audio_st)
1434
            return AV_SYNC_AUDIO_MASTER;
1435
        else
1436
            return AV_SYNC_EXTERNAL_CLOCK;
1437
    } else {
1438
        return AV_SYNC_EXTERNAL_CLOCK;
1439
    }
1440
}
1441
1442
/* get the current master clock value */
1443
static double get_master_clock(VideoState *is)
1444
{
1445
    double val;
1446
1447
    switch (get_master_sync_type(is)) {
1448
        case AV_SYNC_VIDEO_MASTER:
1449
            val = get_clock(&is->vidclk);
1450
            break;
1451
        case AV_SYNC_AUDIO_MASTER:
1452
            val = get_clock(&is->audclk);
1453
            break;
1454
        default:
1455
            val = get_clock(&is->extclk);
1456
            break;
1457
    }
1458
    return val;
1459
}
1460
1461
static void check_external_clock_speed(VideoState *is) {
1462
   if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1463
       is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1464
       set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1465
   } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1466
              (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1467
       set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1468
   } else {
1469
       double speed = is->extclk.speed;
1470
       if (speed != 1.0)
1471
           set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1472
   }
1473
}
1474
1475
/* seek in the stream */
1476
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1477
{
1478
    if (!is->seek_req) {
1479
        is->seek_pos = pos;
1480
        is->seek_rel = rel;
1481
        is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1482
        if (seek_by_bytes)
1483
            is->seek_flags |= AVSEEK_FLAG_BYTE;
1484
        is->seek_req = 1;
1485
        SDL_CondSignal(is->continue_read_thread);
1486
    }
1487
}
1488
1489
/* pause or resume the video */
1490
static void stream_toggle_pause(VideoState *is)
1491
{
1492
    if (is->paused) {
1493
        is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1494
        if (is->read_pause_return != AVERROR(ENOSYS)) {
1495
            is->vidclk.paused = 0;
1496
        }
1497
        set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1498
    }
1499
    set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1500
    is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1501
}
1502
1503
static void toggle_pause(VideoState *is)
1504
{
1505
    stream_toggle_pause(is);
1506
    is->step = 0;
1507
}
1508
1509
static void toggle_mute(VideoState *is)
1510
{
1511
    is->muted = !is->muted;
1512
}
1513
1514
static void update_volume(VideoState *is, int sign, double step)
1515
{
1516
    double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
1517
    int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
1518
    is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
1519
}
1520
1521
static void step_to_next_frame(VideoState *is)
1522
{
1523
    /* if the stream is paused unpause it, then step */
1524
    if (is->paused)
1525
        stream_toggle_pause(is);
1526
    is->step = 1;
1527
}
1528
1529
static double compute_target_delay(double delay, VideoState *is)
1530
{
1531
    double sync_threshold, diff = 0;
1532
1533
    /* update delay to follow master synchronisation source */
1534
    if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1535
        /* if video is slave, we try to correct big delays by
1536
           duplicating or deleting a frame */
1537
        diff = get_clock(&is->vidclk) - get_master_clock(is);
1538
1539
        /* skip or repeat frame. We take into account the
1540
           delay to compute the threshold. I still don't know
1541
           if it is the best guess */
1542
        sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1543
        if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1544
            if (diff <= -sync_threshold)
1545
                delay = FFMAX(0, delay + diff);
1546
            else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1547
                delay = delay + diff;
1548
            else if (diff >= sync_threshold)
1549
                delay = 2 * delay;
1550
        }
1551
    }
1552
1553
    av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1554
            delay, -diff);
1555
1556
    return delay;
1557
}
1558
1559
static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1560
    if (vp->serial == nextvp->serial) {
1561
        double duration = nextvp->pts - vp->pts;
1562
        if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1563
            return vp->duration;
1564
        else
1565
            return duration;
1566
    } else {
1567
        return 0.0;
1568
    }
1569
}
1570
1571
static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1572
    /* update current video pts */
1573
    set_clock(&is->vidclk, pts, serial);
1574
    sync_clock_to_slave(&is->extclk, &is->vidclk);
1575
}
1576
1577
/* called to display each frame */
1578
static void video_refresh(void *opaque, double *remaining_time)
1579
{
1580
    VideoState *is = opaque;
1581
    double time;
1582
1583
    Frame *sp, *sp2;
1584
1585
    if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1586
        check_external_clock_speed(is);
1587
1588
    if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1589
        time = av_gettime_relative() / 1000000.0;
1590
        if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1591
            video_display(is);
1592
            is->last_vis_time = time;
1593
        }
1594
        *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1595
    }
1596
1597
    if (is->video_st) {
1598
retry:
1599
        if (frame_queue_nb_remaining(&is->pictq) == 0) {
1600
            // nothing to do, no picture to display in the queue
1601
        } else {
1602
            double last_duration, duration, delay;
1603
            Frame *vp, *lastvp;
1604
1605
            /* dequeue the picture */
1606
            lastvp = frame_queue_peek_last(&is->pictq);
1607
            vp = frame_queue_peek(&is->pictq);
1608
1609
            if (vp->serial != is->videoq.serial) {
1610
                frame_queue_next(&is->pictq);
1611
                goto retry;
1612
            }
1613
1614
            if (lastvp->serial != vp->serial)
1615
                is->frame_timer = av_gettime_relative() / 1000000.0;
1616
1617
            if (is->paused)
1618
                goto display;
1619
1620
            /* compute nominal last_duration */
1621
            last_duration = vp_duration(is, lastvp, vp);
1622
            delay = compute_target_delay(last_duration, is);
1623
1624
            time= av_gettime_relative()/1000000.0;
1625
            if (time < is->frame_timer + delay) {
1626
                *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1627
                goto display;
1628
            }
1629
1630
            is->frame_timer += delay;
1631
            if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1632
                is->frame_timer = time;
1633
1634
            SDL_LockMutex(is->pictq.mutex);
1635
            if (!isnan(vp->pts))
1636
                update_video_pts(is, vp->pts, vp->pos, vp->serial);
1637
            SDL_UnlockMutex(is->pictq.mutex);
1638
1639
            if (frame_queue_nb_remaining(&is->pictq) > 1) {
1640
                Frame *nextvp = frame_queue_peek_next(&is->pictq);
1641
                duration = vp_duration(is, vp, nextvp);
1642
                if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1643
                    is->frame_drops_late++;
1644
                    frame_queue_next(&is->pictq);
1645
                    goto retry;
1646
                }
1647
            }
1648
1649
            if (is->subtitle_st) {
1650
                    while (frame_queue_nb_remaining(&is->subpq) > 0) {
1651
                        sp = frame_queue_peek(&is->subpq);
1652
1653
                        if (frame_queue_nb_remaining(&is->subpq) > 1)
1654
                            sp2 = frame_queue_peek_next(&is->subpq);
1655
                        else
1656
                            sp2 = NULL;
1657
1658
                        if (sp->serial != is->subtitleq.serial
1659
                                || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1660
                                || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1661
                        {
1662
                            if (sp->uploaded) {
1663
                                int i;
1664
                                for (i = 0; i < sp->sub.num_rects; i++) {
1665
                                    AVSubtitleRect *sub_rect = sp->sub.rects[i];
1666
                                    uint8_t *pixels;
1667
                                    int pitch, j;
1668
1669
                                    if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
1670
                                        for (j = 0; j < sub_rect->h; j++, pixels += pitch)
1671
                                            memset(pixels, 0, sub_rect->w << 2);
1672
                                        SDL_UnlockTexture(is->sub_texture);
1673
                                    }
1674
                                }
1675
                            }
1676
                            frame_queue_next(&is->subpq);
1677
                        } else {
1678
                            break;
1679
                        }
1680
                    }
1681
            }
1682
1683
            frame_queue_next(&is->pictq);
1684
            is->force_refresh = 1;
1685
1686
            if (is->step && !is->paused)
1687
                stream_toggle_pause(is);
1688
        }
1689
display:
1690
        /* display picture */
1691
        if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1692
            video_display(is);
1693
    }
1694
    is->force_refresh = 0;
1695
    if (show_status) {
1696
        AVBPrint buf;
1697
        static int64_t last_time;
1698
        int64_t cur_time;
1699
        int aqsize, vqsize, sqsize;
1700
        double av_diff;
1701
1702
        cur_time = av_gettime_relative();
1703
        if (!last_time || (cur_time - last_time) >= 30000) {
1704
            aqsize = 0;
1705
            vqsize = 0;
1706
            sqsize = 0;
1707
            if (is->audio_st)
1708
                aqsize = is->audioq.size;
1709
            if (is->video_st)
1710
                vqsize = is->videoq.size;
1711
            if (is->subtitle_st)
1712
                sqsize = is->subtitleq.size;
1713
            av_diff = 0;
1714
            if (is->audio_st && is->video_st)
1715
                av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1716
            else if (is->video_st)
1717
                av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1718
            else if (is->audio_st)
1719
                av_diff = get_master_clock(is) - get_clock(&is->audclk);
1720
1721
            av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
1722
            av_bprintf(&buf,
1723
                      "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1724
                      get_master_clock(is),
1725
                      (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1726
                      av_diff,
1727
                      is->frame_drops_early + is->frame_drops_late,
1728
                      aqsize / 1024,
1729
                      vqsize / 1024,
1730
                      sqsize,
1731
                      is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1732
                      is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1733
1734
            if (show_status == 1 && AV_LOG_INFO > av_log_get_level())
1735
                fprintf(stderr, "%s", buf.str);
1736
            else
1737
                av_log(NULL, AV_LOG_INFO, "%s", buf.str);
1738
1739
            fflush(stderr);
1740
            av_bprint_finalize(&buf, NULL);
1741
1742
            last_time = cur_time;
1743
        }
1744
    }
1745
}
1746
1747
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1748
{
1749
    Frame *vp;
1750
1751
#if defined(DEBUG_SYNC)
1752
    printf("frame_type=%c pts=%0.3f\n",
1753
           av_get_picture_type_char(src_frame->pict_type), pts);
1754
#endif
1755
1756
    if (!(vp = frame_queue_peek_writable(&is->pictq)))
1757
        return -1;
1758
1759
    vp->sar = src_frame->sample_aspect_ratio;
1760
    vp->uploaded = 0;
1761
1762
    vp->width = src_frame->width;
1763
    vp->height = src_frame->height;
1764
    vp->format = src_frame->format;
1765
1766
    vp->pts = pts;
1767
    vp->duration = duration;
1768
    vp->pos = pos;
1769
    vp->serial = serial;
1770
1771
    set_default_window_size(vp->width, vp->height, vp->sar);
1772
1773
    av_frame_move_ref(vp->frame, src_frame);
1774
    frame_queue_push(&is->pictq);
1775
    return 0;
1776
}
1777
1778
static int get_video_frame(VideoState *is, AVFrame *frame)
1779
{
1780
    int got_picture;
1781
1782
    if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1783
        return -1;
1784
1785
    if (got_picture) {
1786
        double dpts = NAN;
1787
1788
        if (frame->pts != AV_NOPTS_VALUE)
1789
            dpts = av_q2d(is->video_st->time_base) * frame->pts;
1790
1791
        frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1792
1793
        if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1794
            if (frame->pts != AV_NOPTS_VALUE) {
1795
                double diff = dpts - get_master_clock(is);
1796
                if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1797
                    diff - is->frame_last_filter_delay < 0 &&
1798
                    is->viddec.pkt_serial == is->vidclk.serial &&
1799
                    is->videoq.nb_packets) {
1800
                    is->frame_drops_early++;
1801
                    av_frame_unref(frame);
1802
                    got_picture = 0;
1803
                }
1804
            }
1805
        }
1806
    }
1807
1808
    return got_picture;
1809
}
1810
1811
#if CONFIG_AVFILTER
1812
static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1813
                                 AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1814
{
1815
    int ret, i;
1816
    int nb_filters = graph->nb_filters;
1817
    AVFilterInOut *outputs = NULL, *inputs = NULL;
1818
1819
    if (filtergraph) {
1820
        outputs = avfilter_inout_alloc();
1821
        inputs  = avfilter_inout_alloc();
1822
        if (!outputs || !inputs) {
1823
            ret = AVERROR(ENOMEM);
1824
            goto fail;
1825
        }
1826
1827
        outputs->name       = av_strdup("in");
1828
        outputs->filter_ctx = source_ctx;
1829
        outputs->pad_idx    = 0;
1830
        outputs->next       = NULL;
1831
1832
        inputs->name        = av_strdup("out");
1833
        inputs->filter_ctx  = sink_ctx;
1834
        inputs->pad_idx     = 0;
1835
        inputs->next        = NULL;
1836
1837
        if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1838
            goto fail;
1839
    } else {
1840
        if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1841
            goto fail;
1842
    }
1843
1844
    /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1845
    for (i = 0; i < graph->nb_filters - nb_filters; i++)
1846
        FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1847
1848
    ret = avfilter_graph_config(graph, NULL);
1849
fail:
1850
    avfilter_inout_free(&outputs);
1851
    avfilter_inout_free(&inputs);
1852
    return ret;
1853
}
1854
1855
static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1856
{
1857
    enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
1858
    char sws_flags_str[512] = "";
1859
    char buffersrc_args[256];
1860
    int ret;
1861
    AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1862
    AVCodecParameters *codecpar = is->video_st->codecpar;
1863
    AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1864
    AVDictionaryEntry *e = NULL;
1865
    int nb_pix_fmts = 0;
1866
    int i, j;
1867
1868
    for (i = 0; i < renderer_info.num_texture_formats; i++) {
1869
        for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
1870
            if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
1871
                pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
1872
                break;
1873
            }
1874
        }
1875
    }
1876
    pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
1877
1878
    while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1879
        if (!strcmp(e->key, "sws_flags")) {
1880
            av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1881
        } else
1882
            av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1883
    }
1884
    if (strlen(sws_flags_str))
1885
        sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1886
1887
    graph->scale_sws_opts = av_strdup(sws_flags_str);
1888
1889
    snprintf(buffersrc_args, sizeof(buffersrc_args),
1890
             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1891
             frame->width, frame->height, frame->format,
1892
             is->video_st->time_base.num, is->video_st->time_base.den,
1893
             codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1894
    if (fr.num && fr.den)
1895
        av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1896
1897
    if ((ret = avfilter_graph_create_filter(&filt_src,
1898
                                            avfilter_get_by_name("buffer"),
1899
                                            "ffplay_buffer", buffersrc_args, NULL,
1900
                                            graph)) < 0)
1901
        goto fail;
1902
1903
    ret = avfilter_graph_create_filter(&filt_out,
1904
                                       avfilter_get_by_name("buffersink"),
1905
                                       "ffplay_buffersink", NULL, NULL, graph);
1906
    if (ret < 0)
1907
        goto fail;
1908
1909
    if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1910
        goto fail;
1911
1912
    last_filter = filt_out;
1913
1914
/* Note: this macro adds a filter before the lastly added filter, so the
1915
 * processing order of the filters is in reverse */
1916
#define INSERT_FILT(name, arg) do {                                          \
1917
    AVFilterContext *filt_ctx;                                               \
1918
                                                                             \
1919
    ret = avfilter_graph_create_filter(&filt_ctx,                            \
1920
                                       avfilter_get_by_name(name),           \
1921
                                       "ffplay_" name, arg, NULL, graph);    \
1922
    if (ret < 0)                                                             \
1923
        goto fail;                                                           \
1924
                                                                             \
1925
    ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1926
    if (ret < 0)                                                             \
1927
        goto fail;                                                           \
1928
                                                                             \
1929
    last_filter = filt_ctx;                                                  \
1930
} while (0)
1931
1932
    if (autorotate) {
1933
        double theta  = get_rotation(is->video_st);
1934
1935
        if (fabs(theta - 90) < 1.0) {
1936
            INSERT_FILT("transpose", "clock");
1937
        } else if (fabs(theta - 180) < 1.0) {
1938
            INSERT_FILT("hflip", NULL);
1939
            INSERT_FILT("vflip", NULL);
1940
        } else if (fabs(theta - 270) < 1.0) {
1941
            INSERT_FILT("transpose", "cclock");
1942
        } else if (fabs(theta) > 1.0) {
1943
            char rotate_buf[64];
1944
            snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1945
            INSERT_FILT("rotate", rotate_buf);
1946
        }
1947
    }
1948
1949
    if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1950
        goto fail;
1951
1952
    is->in_video_filter  = filt_src;
1953
    is->out_video_filter = filt_out;
1954
1955
fail:
1956
    return ret;
1957
}
1958
1959
static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1960
{
1961
    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1962
    int sample_rates[2] = { 0, -1 };
1963
    int64_t channel_layouts[2] = { 0, -1 };
1964
    int channels[2] = { 0, -1 };
1965
    AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1966
    char aresample_swr_opts[512] = "";
1967
    AVDictionaryEntry *e = NULL;
1968
    char asrc_args[256];
1969
    int ret;
1970
1971
    avfilter_graph_free(&is->agraph);
1972
    if (!(is->agraph = avfilter_graph_alloc()))
1973
        return AVERROR(ENOMEM);
1974
    is->agraph->nb_threads = filter_nbthreads;
1975
1976
    while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1977
        av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1978
    if (strlen(aresample_swr_opts))
1979
        aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1980
    av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1981
1982
    ret = snprintf(asrc_args, sizeof(asrc_args),
1983
                   "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1984
                   is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1985
                   is->audio_filter_src.channels,
1986
                   1, is->audio_filter_src.freq);
1987
    if (is->audio_filter_src.channel_layout)
1988
        snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1989
                 ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1990
1991
    ret = avfilter_graph_create_filter(&filt_asrc,
1992
                                       avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1993
                                       asrc_args, NULL, is->agraph);
1994
    if (ret < 0)
1995
        goto end;
1996
1997
1998
    ret = avfilter_graph_create_filter(&filt_asink,
1999
                                       avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2000
                                       NULL, NULL, is->agraph);
2001
    if (ret < 0)
2002
        goto end;
2003
2004
    if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2005
        goto end;
2006
    if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2007
        goto end;
2008
2009
    if (force_output_format) {
2010
        channel_layouts[0] = is->audio_tgt.channel_layout;
2011
        channels       [0] = is->audio_tgt.channel_layout ? -1 : is->audio_tgt.channels;
2012
        sample_rates   [0] = is->audio_tgt.freq;
2013
        if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2014
            goto end;
2015
        if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2016
            goto end;
2017
        if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2018
            goto end;
2019
        if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2020
            goto end;
2021
    }
2022
2023
2024
    if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2025
        goto end;
2026
2027
    is->in_audio_filter  = filt_asrc;
2028
    is->out_audio_filter = filt_asink;
2029
2030
end:
2031
    if (ret < 0)
2032
        avfilter_graph_free(&is->agraph);
2033
    return ret;
2034
}
2035
#endif  /* CONFIG_AVFILTER */
2036
2037
static int audio_thread(void *arg)
2038
{
2039
    VideoState *is = arg;
2040
    AVFrame *frame = av_frame_alloc();
2041
    Frame *af;
2042
#if CONFIG_AVFILTER
2043
    int last_serial = -1;
2044
    int64_t dec_channel_layout;
2045
    int reconfigure;
2046
#endif
2047
    int got_frame = 0;
2048
    AVRational tb;
2049
    int ret = 0;
2050
2051
    if (!frame)
2052
        return AVERROR(ENOMEM);
2053
2054
    do {
2055
        if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2056
            goto the_end;
2057
2058
        if (got_frame) {
2059
                tb = (AVRational){1, frame->sample_rate};
2060
2061
#if CONFIG_AVFILTER
2062
                dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
2063
2064
                reconfigure =
2065
                    cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2066
                                   frame->format, frame->channels)    ||
2067
                    is->audio_filter_src.channel_layout != dec_channel_layout ||
2068
                    is->audio_filter_src.freq           != frame->sample_rate ||
2069
                    is->auddec.pkt_serial               != last_serial;
2070
2071
                if (reconfigure) {
2072
                    char buf1[1024], buf2[1024];
2073
                    av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2074
                    av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2075
                    av_log(NULL, AV_LOG_DEBUG,
2076
                           "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2077
                           is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2078
                           frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2079
2080
                    is->audio_filter_src.fmt            = frame->format;
2081
                    is->audio_filter_src.channels       = frame->channels;
2082
                    is->audio_filter_src.channel_layout = dec_channel_layout;
2083
                    is->audio_filter_src.freq           = frame->sample_rate;
2084
                    last_serial                         = is->auddec.pkt_serial;
2085
2086
                    if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2087
                        goto the_end;
2088
                }
2089
2090
            if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2091
                goto the_end;
2092
2093
            while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2094
                tb = av_buffersink_get_time_base(is->out_audio_filter);
2095
#endif
2096
                if (!(af = frame_queue_peek_writable(&is->sampq)))
2097
                    goto the_end;
2098
2099
                af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2100
                af->pos = frame->pkt_pos;
2101
                af->serial = is->auddec.pkt_serial;
2102
                af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2103
2104
                av_frame_move_ref(af->frame, frame);
2105
                frame_queue_push(&is->sampq);
2106
2107
#if CONFIG_AVFILTER
2108
                if (is->audioq.serial != is->auddec.pkt_serial)
2109
                    break;
2110
            }
2111
            if (ret == AVERROR_EOF)
2112
                is->auddec.finished = is->auddec.pkt_serial;
2113
#endif
2114
        }
2115
    } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2116
 the_end:
2117
#if CONFIG_AVFILTER
2118
    avfilter_graph_free(&is->agraph);
2119
#endif
2120
    av_frame_free(&frame);
2121
    return ret;
2122
}
2123
2124
static int decoder_start(Decoder *d, int (*fn)(void *), const char *thread_name, void* arg)
2125
{
2126
    packet_queue_start(d->queue);
2127
    d->decoder_tid = SDL_CreateThread(fn, thread_name, arg);
2128
    if (!d->decoder_tid) {
2129
        av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2130
        return AVERROR(ENOMEM);
2131
    }
2132
    return 0;
2133
}
2134
2135
static int video_thread(void *arg)
2136
{
2137
    VideoState *is = arg;
2138
    AVFrame *frame = av_frame_alloc();
2139
    double pts;
2140
    double duration;
2141
    int ret;
2142
    AVRational tb = is->video_st->time_base;
2143
    AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2144
2145
#if CONFIG_AVFILTER
2146
    AVFilterGraph *graph = NULL;
2147
    AVFilterContext *filt_out = NULL, *filt_in = NULL;
2148
    int last_w = 0;
2149
    int last_h = 0;
2150
    enum AVPixelFormat last_format = -2;
2151
    int last_serial = -1;
2152
    int last_vfilter_idx = 0;
2153
#endif
2154
2155
    if (!frame)
2156
        return AVERROR(ENOMEM);
2157
2158
    for (;;) {
2159
        ret = get_video_frame(is, frame);
2160
        if (ret < 0)
2161
            goto the_end;
2162
        if (!ret)
2163
            continue;
2164
2165
#if CONFIG_AVFILTER
2166
        if (   last_w != frame->width
2167
            || last_h != frame->height
2168
            || last_format != frame->format
2169
            || last_serial != is->viddec.pkt_serial
2170
            || last_vfilter_idx != is->vfilter_idx) {
2171
            av_log(NULL, AV_LOG_DEBUG,
2172
                   "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2173
                   last_w, last_h,
2174
                   (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2175
                   frame->width, frame->height,
2176
                   (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2177
            avfilter_graph_free(&graph);
2178
            graph = avfilter_graph_alloc();
2179
            if (!graph) {
2180
                ret = AVERROR(ENOMEM);
2181
                goto the_end;
2182
            }
2183
            graph->nb_threads = filter_nbthreads;
2184
            if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2185
                SDL_Event event;
2186
                event.type = FF_QUIT_EVENT;
2187
                event.user.data1 = is;
2188
                SDL_PushEvent(&event);
2189
                goto the_end;
2190
            }
2191
            filt_in  = is->in_video_filter;
2192
            filt_out = is->out_video_filter;
2193
            last_w = frame->width;
2194
            last_h = frame->height;
2195
            last_format = frame->format;
2196
            last_serial = is->viddec.pkt_serial;
2197
            last_vfilter_idx = is->vfilter_idx;
2198
            frame_rate = av_buffersink_get_frame_rate(filt_out);
2199
        }
2200
2201
        ret = av_buffersrc_add_frame(filt_in, frame);
2202
        if (ret < 0)
2203
            goto the_end;
2204
2205
        while (ret >= 0) {
2206
            is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2207
2208
            ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2209
            if (ret < 0) {
2210
                if (ret == AVERROR_EOF)
2211
                    is->viddec.finished = is->viddec.pkt_serial;
2212
                ret = 0;
2213
                break;
2214
            }
2215
2216
            is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2217
            if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2218
                is->frame_last_filter_delay = 0;
2219
            tb = av_buffersink_get_time_base(filt_out);
2220
#endif
2221
            duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2222
            pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2223
            ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2224
            av_frame_unref(frame);
2225
#if CONFIG_AVFILTER
2226
            if (is->videoq.serial != is->viddec.pkt_serial)
2227
                break;
2228
        }
2229
#endif
2230
2231
        if (ret < 0)
2232
            goto the_end;
2233
    }
2234
 the_end:
2235
#if CONFIG_AVFILTER
2236
    avfilter_graph_free(&graph);
2237
#endif
2238
    av_frame_free(&frame);
2239
    return 0;
2240
}
2241
2242
static int subtitle_thread(void *arg)
2243
{
2244
    VideoState *is = arg;
2245
    Frame *sp;
2246
    int got_subtitle;
2247
    double pts;
2248
2249
    for (;;) {
2250
        if (!(sp = frame_queue_peek_writable(&is->subpq)))
2251
            return 0;
2252
2253
        if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2254
            break;
2255
2256
        pts = 0;
2257
2258
        if (got_subtitle && sp->sub.format == 0) {
2259
            if (sp->sub.pts != AV_NOPTS_VALUE)
2260
                pts = sp->sub.pts / (double)AV_TIME_BASE;
2261
            sp->pts = pts;
2262
            sp->serial = is->subdec.pkt_serial;
2263
            sp->width = is->subdec.avctx->width;
2264
            sp->height = is->subdec.avctx->height;
2265
            sp->uploaded = 0;
2266
2267
            /* now we can update the picture count */
2268
            frame_queue_push(&is->subpq);
2269
        } else if (got_subtitle) {
2270
            avsubtitle_free(&sp->sub);
2271
        }
2272
    }
2273
    return 0;
2274
}
2275
2276
/* copy samples for viewing in editor window */
2277
static void update_sample_display(VideoState *is, short *samples, int samples_size)
2278
{
2279
    int size, len;
2280
2281
    size = samples_size / sizeof(short);
2282
    while (size > 0) {
2283
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2284
        if (len > size)
2285
            len = size;
2286
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2287
        samples += len;
2288
        is->sample_array_index += len;
2289
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2290
            is->sample_array_index = 0;
2291
        size -= len;
2292
    }
2293
}
2294
2295
/* return the wanted number of samples to get better sync if sync_type is video
2296
 * or external master clock */
2297
static int synchronize_audio(VideoState *is, int nb_samples)
2298
{
2299
    int wanted_nb_samples = nb_samples;
2300
2301
    /* if not master, then we try to remove or add samples to correct the clock */
2302
    if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2303
        double diff, avg_diff;
2304
        int min_nb_samples, max_nb_samples;
2305
2306
        diff = get_clock(&is->audclk) - get_master_clock(is);
2307
2308
        if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2309
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2310
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2311
                /* not enough measures to have a correct estimate */
2312
                is->audio_diff_avg_count++;
2313
            } else {
2314
                /* estimate the A-V difference */
2315
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2316
2317
                if (fabs(avg_diff) >= is->audio_diff_threshold) {
2318
                    wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2319
                    min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2320
                    max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2321
                    wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2322
                }
2323
                av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2324
                        diff, avg_diff, wanted_nb_samples - nb_samples,
2325
                        is->audio_clock, is->audio_diff_threshold);
2326
            }
2327
        } else {
2328
            /* too big difference : may be initial PTS errors, so
2329
               reset A-V filter */
2330
            is->audio_diff_avg_count = 0;
2331
            is->audio_diff_cum       = 0;
2332
        }
2333
    }
2334
2335
    return wanted_nb_samples;
2336
}
2337
2338
/**
2339
 * Decode one audio frame and return its uncompressed size.
2340
 *
2341
 * The processed audio frame is decoded, converted if required, and
2342
 * stored in is->audio_buf, with size in bytes given by the return
2343
 * value.
2344
 */
2345
static int audio_decode_frame(VideoState *is)
2346
{
2347
    int data_size, resampled_data_size;
2348
    int64_t dec_channel_layout;
2349
    av_unused double audio_clock0;
2350
    int wanted_nb_samples;
2351
    Frame *af;
2352
2353
    if (is->paused)
2354
        return -1;
2355
2356
    do {
2357
#if defined(_WIN32)
2358
        while (frame_queue_nb_remaining(&is->sampq) == 0) {
2359
            if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2360
                return -1;
2361
            av_usleep (1000);
2362
        }
2363
#endif
2364
        if (!(af = frame_queue_peek_readable(&is->sampq)))
2365
            return -1;
2366
        frame_queue_next(&is->sampq);
2367
    } while (af->serial != is->audioq.serial);
2368
2369
    data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2370
                                           af->frame->nb_samples,
2371
                                           af->frame->format, 1);
2372
2373
    dec_channel_layout =
2374
        (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2375
        af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2376
    wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2377
2378
    if (af->frame->format        != is->audio_src.fmt            ||
2379
        dec_channel_layout       != is->audio_src.channel_layout ||
2380
        af->frame->sample_rate   != is->audio_src.freq           ||
2381
        (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2382
        swr_free(&is->swr_ctx);
2383
        is->swr_ctx = swr_alloc_set_opts(NULL,
2384
                                         is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2385
                                         dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2386
                                         0, NULL);
2387
        if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2388
            av_log(NULL, AV_LOG_ERROR,
2389
                   "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2390
                    af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2391
                    is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2392
            swr_free(&is->swr_ctx);
2393
            return -1;
2394
        }
2395
        is->audio_src.channel_layout = dec_channel_layout;
2396
        is->audio_src.channels       = af->frame->channels;
2397
        is->audio_src.freq = af->frame->sample_rate;
2398
        is->audio_src.fmt = af->frame->format;
2399
    }
2400
2401
    if (is->swr_ctx) {
2402
        const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2403
        uint8_t **out = &is->audio_buf1;
2404
        int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2405
        int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2406
        int len2;
2407
        if (out_size < 0) {
2408
            av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2409
            return -1;
2410
        }
2411
        if (wanted_nb_samples != af->frame->nb_samples) {
2412
            if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2413
                                        wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2414
                av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2415
                return -1;
2416
            }
2417
        }
2418
        av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2419
        if (!is->audio_buf1)
2420
            return AVERROR(ENOMEM);
2421
        len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2422
        if (len2 < 0) {
2423
            av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2424
            return -1;
2425
        }
2426
        if (len2 == out_count) {
2427
            av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2428
            if (swr_init(is->swr_ctx) < 0)
2429
                swr_free(&is->swr_ctx);
2430
        }
2431
        is->audio_buf = is->audio_buf1;
2432
        resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2433
    } else {
2434
        is->audio_buf = af->frame->data[0];
2435
        resampled_data_size = data_size;
2436
    }
2437
2438
    audio_clock0 = is->audio_clock;
2439
    /* update the audio clock with the pts */
2440
    if (!isnan(af->pts))
2441
        is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2442
    else
2443
        is->audio_clock = NAN;
2444
    is->audio_clock_serial = af->serial;
2445
#ifdef DEBUG
2446
    {
2447
        static double last_clock;
2448
        printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2449
               is->audio_clock - last_clock,
2450
               is->audio_clock, audio_clock0);
2451
        last_clock = is->audio_clock;
2452
    }
2453
#endif
2454
    return resampled_data_size;
2455
}
2456
2457
/* prepare a new audio buffer */
2458
static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2459
{
2460
    VideoState *is = opaque;
2461
    int audio_size, len1;
2462
2463
    audio_callback_time = av_gettime_relative();
2464
2465
    while (len > 0) {
2466
        if (is->audio_buf_index >= is->audio_buf_size) {
2467
           audio_size = audio_decode_frame(is);
2468
           if (audio_size < 0) {
2469
                /* if error, just output silence */
2470
               is->audio_buf = NULL;
2471
               is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2472
           } else {
2473
               if (is->show_mode != SHOW_MODE_VIDEO)
2474
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2475
               is->audio_buf_size = audio_size;
2476
           }
2477
           is->audio_buf_index = 0;
2478
        }
2479
        len1 = is->audio_buf_size - is->audio_buf_index;
2480
        if (len1 > len)
2481
            len1 = len;
2482
        if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2483
            memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2484
        else {
2485
            memset(stream, 0, len1);
2486
            if (!is->muted && is->audio_buf)
2487
                SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
2488
        }
2489
        len -= len1;
2490
        stream += len1;
2491
        is->audio_buf_index += len1;
2492
    }
2493
    is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2494
    /* Let's assume the audio driver that is used by SDL has two periods. */
2495
    if (!isnan(is->audio_clock)) {
2496
        set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2497
        sync_clock_to_slave(&is->extclk, &is->audclk);
2498
    }
2499
}
2500
2501
static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2502
{
2503
    SDL_AudioSpec wanted_spec, spec;
2504
    const char *env;
2505
    static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2506
    static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2507
    int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2508
2509
    env = SDL_getenv("SDL_AUDIO_CHANNELS");
2510
    if (env) {
2511
        wanted_nb_channels = atoi(env);
2512
        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2513
    }
2514
    if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2515
        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2516
        wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2517
    }
2518
    wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2519
    wanted_spec.channels = wanted_nb_channels;
2520
    wanted_spec.freq = wanted_sample_rate;
2521
    if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2522
        av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2523
        return -1;
2524
    }
2525
    while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2526
        next_sample_rate_idx--;
2527
    wanted_spec.format = AUDIO_S16SYS;
2528
    wanted_spec.silence = 0;
2529
    wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2530
    wanted_spec.callback = sdl_audio_callback;
2531
    wanted_spec.userdata = opaque;
2532
    while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
2533
        av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2534
               wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2535
        wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2536
        if (!wanted_spec.channels) {
2537
            wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2538
            wanted_spec.channels = wanted_nb_channels;
2539
            if (!wanted_spec.freq) {
2540
                av_log(NULL, AV_LOG_ERROR,
2541
                       "No more combinations to try, audio open failed\n");
2542
                return -1;
2543
            }
2544
        }
2545
        wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2546
    }
2547
    if (spec.format != AUDIO_S16SYS) {
2548
        av_log(NULL, AV_LOG_ERROR,
2549
               "SDL advised audio format %d is not supported!\n", spec.format);
2550
        return -1;
2551
    }
2552
    if (spec.channels != wanted_spec.channels) {
2553
        wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2554
        if (!wanted_channel_layout) {
2555
            av_log(NULL, AV_LOG_ERROR,
2556
                   "SDL advised channel count %d is not supported!\n", spec.channels);
2557
            return -1;
2558
        }
2559
    }
2560
2561
    audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2562
    audio_hw_params->freq = spec.freq;
2563
    audio_hw_params->channel_layout = wanted_channel_layout;
2564
    audio_hw_params->channels =  spec.channels;
2565
    audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2566
    audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2567
    if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2568
        av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2569
        return -1;
2570
    }
2571
    return spec.size;
2572
}
2573
2574
/* open a given stream. Return 0 if OK */
2575
static int stream_component_open(VideoState *is, int stream_index)
2576
{
2577
    AVFormatContext *ic = is->ic;
2578
    AVCodecContext *avctx;
2579
    AVCodec *codec;
2580
    const char *forced_codec_name = NULL;
2581
    AVDictionary *opts = NULL;
2582
    AVDictionaryEntry *t = NULL;
2583
    int sample_rate, nb_channels;
2584
    int64_t channel_layout;
2585
    int ret = 0;
2586
    int stream_lowres = lowres;
2587
2588
    if (stream_index < 0 || stream_index >= ic->nb_streams)
2589
        return -1;
2590
2591
    avctx = avcodec_alloc_context3(NULL);
2592
    if (!avctx)
2593
        return AVERROR(ENOMEM);
2594
2595
    ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2596
    if (ret < 0)
2597
        goto fail;
2598
    avctx->pkt_timebase = ic->streams[stream_index]->time_base;
2599
2600
    codec = avcodec_find_decoder(avctx->codec_id);
2601
2602
    switch(avctx->codec_type){
2603
        case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2604
        case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2605
        case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2606
    }
2607
    if (forced_codec_name)
2608
        codec = avcodec_find_decoder_by_name(forced_codec_name);
2609
    if (!codec) {
2610
        if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2611
                                      "No codec could be found with name '%s'\n", forced_codec_name);
2612
        else                   av_log(NULL, AV_LOG_WARNING,
2613
                                      "No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
2614
        ret = AVERROR(EINVAL);
2615
        goto fail;
2616
    }
2617
2618
    avctx->codec_id = codec->id;
2619
    if (stream_lowres > codec->max_lowres) {
2620
        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2621
                codec->max_lowres);
2622
        stream_lowres = codec->max_lowres;
2623
    }
2624
    avctx->lowres = stream_lowres;
2625
2626
    if (fast)
2627
        avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2628
2629
    opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2630
    if (!av_dict_get(opts, "threads", NULL, 0))
2631
        av_dict_set(&opts, "threads", "auto", 0);
2632
    if (stream_lowres)
2633
        av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2634
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2635
        av_dict_set(&opts, "refcounted_frames", "1", 0);
2636
    if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2637
        goto fail;
2638
    }
2639
    if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2640
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2641
        ret =  AVERROR_OPTION_NOT_FOUND;
2642
        goto fail;
2643
    }
2644
2645
    is->eof = 0;
2646
    ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2647
    switch (avctx->codec_type) {
2648
    case AVMEDIA_TYPE_AUDIO:
2649
#if CONFIG_AVFILTER
2650
        {
2651
            AVFilterContext *sink;
2652
2653
            is->audio_filter_src.freq           = avctx->sample_rate;
2654
            is->audio_filter_src.channels       = avctx->channels;
2655
            is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2656
            is->audio_filter_src.fmt            = avctx->sample_fmt;
2657
            if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2658
                goto fail;
2659
            sink = is->out_audio_filter;
2660
            sample_rate    = av_buffersink_get_sample_rate(sink);
2661
            nb_channels    = av_buffersink_get_channels(sink);
2662
            channel_layout = av_buffersink_get_channel_layout(sink);
2663
        }
2664
#else
2665
        sample_rate    = avctx->sample_rate;
2666
        nb_channels    = avctx->channels;
2667
        channel_layout = avctx->channel_layout;
2668
#endif
2669
2670
        /* prepare audio output */
2671
        if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2672
            goto fail;
2673
        is->audio_hw_buf_size = ret;
2674
        is->audio_src = is->audio_tgt;
2675
        is->audio_buf_size  = 0;
2676
        is->audio_buf_index = 0;
2677
2678
        /* init averaging filter */
2679
        is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2680
        is->audio_diff_avg_count = 0;
2681
        /* since we do not have a precise anough audio FIFO fullness,
2682
           we correct audio sync only if larger than this threshold */
2683
        is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2684
2685
        is->audio_stream = stream_index;
2686
        is->audio_st = ic->streams[stream_index];
2687
2688
        decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2689
        if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2690
            is->auddec.start_pts = is->audio_st->start_time;
2691
            is->auddec.start_pts_tb = is->audio_st->time_base;
2692
        }
2693
        if ((ret = decoder_start(&is->auddec, audio_thread, "audio_decoder", is)) < 0)
2694
            goto out;
2695
        SDL_PauseAudioDevice(audio_dev, 0);
2696
        break;
2697
    case AVMEDIA_TYPE_VIDEO:
2698
        is->video_stream = stream_index;
2699
        is->video_st = ic->streams[stream_index];
2700
2701
        decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2702
        if ((ret = decoder_start(&is->viddec, video_thread, "video_decoder", is)) < 0)
2703
            goto out;
2704
        is->queue_attachments_req = 1;
2705
        break;
2706
    case AVMEDIA_TYPE_SUBTITLE:
2707
        is->subtitle_stream = stream_index;
2708
        is->subtitle_st = ic->streams[stream_index];
2709
2710
        decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2711
        if ((ret = decoder_start(&is->subdec, subtitle_thread, "subtitle_decoder", is)) < 0)
2712
            goto out;
2713
        break;
2714
    default:
2715
        break;
2716
    }
2717
    goto out;
2718
2719
fail:
2720
    avcodec_free_context(&avctx);
2721
out:
2722
    av_dict_free(&opts);
2723
2724
    return ret;
2725
}
2726
2727
static int decode_interrupt_cb(void *ctx)
2728
{
2729
    VideoState *is = ctx;
2730
    return is->abort_request;
2731
}
2732
2733
static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2734
    return stream_id < 0 ||
2735
           queue->abort_request ||
2736
           (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2737
           queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2738
}
2739
2740
static int is_realtime(AVFormatContext *s)
2741
{
2742
    if(   !strcmp(s->iformat->name, "rtp")
2743
       || !strcmp(s->iformat->name, "rtsp")
2744
       || !strcmp(s->iformat->name, "sdp")
2745
    )
2746
        return 1;
2747
2748
    if(s->pb && (   !strncmp(s->url, "rtp:", 4)
2749
                 || !strncmp(s->url, "udp:", 4)
2750
                )
2751
    )
2752
        return 1;
2753
    return 0;
2754
}
2755
2756
/* this thread gets the stream from the disk or the network */
2757
static int read_thread(void *arg)
2758
{
2759
    VideoState *is = arg;
2760
    AVFormatContext *ic = NULL;
2761
    int err, i, ret;
2762
    int st_index[AVMEDIA_TYPE_NB];
2763
    AVPacket pkt1, *pkt = &pkt1;
2764
    int64_t stream_start_time;
2765
    int pkt_in_play_range = 0;
2766
    AVDictionaryEntry *t;
2767
    SDL_mutex *wait_mutex = SDL_CreateMutex();
2768
    int scan_all_pmts_set = 0;
2769
    int64_t pkt_ts;
2770
2771
    if (!wait_mutex) {
2772
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2773
        ret = AVERROR(ENOMEM);
2774
        goto fail;
2775
    }
2776
2777
    memset(st_index, -1, sizeof(st_index));
2778
    is->eof = 0;
2779
2780
    ic = avformat_alloc_context();
2781
    if (!ic) {
2782
        av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2783
        ret = AVERROR(ENOMEM);
2784
        goto fail;
2785
    }
2786
    ic->interrupt_callback.callback = decode_interrupt_cb;
2787
    ic->interrupt_callback.opaque = is;
2788
    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2789
        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2790
        scan_all_pmts_set = 1;
2791
    }
2792
    err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2793
    if (err < 0) {
2794
        print_error(is->filename, err);
2795
        ret = -1;
2796
        goto fail;
2797
    }
2798
    if (scan_all_pmts_set)
2799
        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2800
2801
    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2802
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2803
        ret = AVERROR_OPTION_NOT_FOUND;
2804
        goto fail;
2805
    }
2806
    is->ic = ic;
2807
2808
    if (genpts)
2809
        ic->flags |= AVFMT_FLAG_GENPTS;
2810
2811
    av_format_inject_global_side_data(ic);
2812
2813
    if (find_stream_info) {
2814
        AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2815
        int orig_nb_streams = ic->nb_streams;
2816
2817
        err = avformat_find_stream_info(ic, opts);
2818
2819
        for (i = 0; i < orig_nb_streams; i++)
2820
            av_dict_free(&opts[i]);
2821
        av_freep(&opts);
2822
2823
        if (err < 0) {
2824
            av_log(NULL, AV_LOG_WARNING,
2825
                   "%s: could not find codec parameters\n", is->filename);
2826
            ret = -1;
2827
            goto fail;
2828
        }
2829
    }
2830
2831
    if (ic->pb)
2832
        ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2833
2834
    if (seek_by_bytes < 0)
2835
        seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2836
2837
    is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2838
2839
    if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2840
        window_title = av_asprintf("%s - %s", t->value, input_filename);
2841
2842
    /* if seeking requested, we execute it */
2843
    if (start_time != AV_NOPTS_VALUE) {
2844
        int64_t timestamp;
2845
2846
        timestamp = start_time;
2847
        /* add the stream start time */
2848
        if (ic->start_time != AV_NOPTS_VALUE)
2849
            timestamp += ic->start_time;
2850
        ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2851
        if (ret < 0) {
2852
            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2853
                    is->filename, (double)timestamp / AV_TIME_BASE);
2854
        }
2855
    }
2856
2857
    is->realtime = is_realtime(ic);
2858
2859
    if (show_status)
2860
        av_dump_format(ic, 0, is->filename, 0);
2861
2862
    for (i = 0; i < ic->nb_streams; i++) {
2863
        AVStream *st = ic->streams[i];
2864
        enum AVMediaType type = st->codecpar->codec_type;
2865
        st->discard = AVDISCARD_ALL;
2866
        if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2867
            if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2868
                st_index[type] = i;
2869
    }
2870
    for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2871
        if (wanted_stream_spec[i] && st_index[i] == -1) {
2872
            av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
2873
            st_index[i] = INT_MAX;
2874
        }
2875
    }
2876
2877
    if (!video_disable)
2878
        st_index[AVMEDIA_TYPE_VIDEO] =
2879
            av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2880
                                st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2881
    if (!audio_disable)
2882
        st_index[AVMEDIA_TYPE_AUDIO] =
2883
            av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2884
                                st_index[AVMEDIA_TYPE_AUDIO],
2885
                                st_index[AVMEDIA_TYPE_VIDEO],
2886
                                NULL, 0);
2887
    if (!video_disable && !subtitle_disable)
2888
        st_index[AVMEDIA_TYPE_SUBTITLE] =
2889
            av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2890
                                st_index[AVMEDIA_TYPE_SUBTITLE],
2891
                                (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2892
                                 st_index[AVMEDIA_TYPE_AUDIO] :
2893
                                 st_index[AVMEDIA_TYPE_VIDEO]),
2894
                                NULL, 0);
2895
2896
    is->show_mode = show_mode;
2897
    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2898
        AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2899
        AVCodecParameters *codecpar = st->codecpar;
2900
        AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2901
        if (codecpar->width)
2902
            set_default_window_size(codecpar->width, codecpar->height, sar);
2903
    }
2904
2905
    /* open the streams */
2906
    if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2907
        stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2908
    }
2909
2910
    ret = -1;
2911
    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2912
        ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2913
    }
2914
    if (is->show_mode == SHOW_MODE_NONE)
2915
        is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2916
2917
    if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2918
        stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2919
    }
2920
2921
    if (is->video_stream < 0 && is->audio_stream < 0) {
2922
        av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2923
               is->filename);
2924
        ret = -1;
2925
        goto fail;
2926
    }
2927
2928
    if (infinite_buffer < 0 && is->realtime)
2929
        infinite_buffer = 1;
2930
2931
    for (;;) {
2932
        if (is->abort_request)
2933
            break;
2934
        if (is->paused != is->last_paused) {
2935
            is->last_paused = is->paused;
2936
            if (is->paused)
2937
                is->read_pause_return = av_read_pause(ic);
2938
            else
2939
                av_read_play(ic);
2940
        }
2941
#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2942
        if (is->paused &&
2943
                (!strcmp(ic->iformat->name, "rtsp") ||
2944
                 (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2945
            /* wait 10 ms to avoid trying to get another packet */
2946
            /* XXX: horrible */
2947
            SDL_Delay(10);
2948
            continue;
2949
        }
2950
#endif
2951
        if (is->seek_req) {
2952
            int64_t seek_target = is->seek_pos;
2953
            int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2954
            int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2955
// FIXME the +-2 is due to rounding being not done in the correct direction in generation
2956
//      of the seek_pos/seek_rel variables
2957
2958
            ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2959
            if (ret < 0) {
2960
                av_log(NULL, AV_LOG_ERROR,
2961
                       "%s: error while seeking\n", is->ic->url);
2962
            } else {
2963
                if (is->audio_stream >= 0) {
2964
                    packet_queue_flush(&is->audioq);
2965
                    packet_queue_put(&is->audioq, &flush_pkt);
2966
                }
2967
                if (is->subtitle_stream >= 0) {
2968
                    packet_queue_flush(&is->subtitleq);
2969
                    packet_queue_put(&is->subtitleq, &flush_pkt);
2970
                }
2971
                if (is->video_stream >= 0) {
2972
                    packet_queue_flush(&is->videoq);
2973
                    packet_queue_put(&is->videoq, &flush_pkt);
2974
                }
2975
                if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2976
                   set_clock(&is->extclk, NAN, 0);
2977
                } else {
2978
                   set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2979
                }
2980
            }
2981
            is->seek_req = 0;
2982
            is->queue_attachments_req = 1;
2983
            is->eof = 0;
2984
            if (is->paused)
2985
                step_to_next_frame(is);
2986
        }
2987
        if (is->queue_attachments_req) {
2988
            if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2989
                AVPacket copy;
2990
                if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
2991
                    goto fail;
2992
                packet_queue_put(&is->videoq, &copy);
2993
                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2994
            }
2995
            is->queue_attachments_req = 0;
2996
        }
2997
2998
        /* if the queue are full, no need to read more */
2999
        if (infinite_buffer<1 &&
3000
              (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3001
            || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
3002
                stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
3003
                stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
3004
            /* wait 10 ms */
3005
            SDL_LockMutex(wait_mutex);
3006
            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3007
            SDL_UnlockMutex(wait_mutex);
3008
            continue;
3009
        }
3010
        if (!is->paused &&
3011
            (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3012
            (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3013
            if (loop != 1 && (!loop || --loop)) {
3014
                stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3015
            } else if (autoexit) {
3016
                ret = AVERROR_EOF;
3017
                goto fail;
3018
            }
3019
        }
3020
        ret = av_read_frame(ic, pkt);
3021
        if (ret < 0) {
3022
            if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3023
                if (is->video_stream >= 0)
3024
                    packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3025
                if (is->audio_stream >= 0)
3026
                    packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3027
                if (is->subtitle_stream >= 0)
3028
                    packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3029
                is->eof = 1;
3030
            }
3031
            if (ic->pb && ic->pb->error) {
3032
                if (autoexit)
3033
                    goto fail;
3034
                else
3035
                    break;
3036
            }
3037
            SDL_LockMutex(wait_mutex);
3038
            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3039
            SDL_UnlockMutex(wait_mutex);
3040
            continue;
3041
        } else {
3042
            is->eof = 0;
3043
        }
3044
        /* check if packet is in play range specified by user, then queue, otherwise discard */
3045
        stream_start_time = ic->streams[pkt->stream_index]->start_time;
3046
        pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3047
        pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3048
                (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3049
                av_q2d(ic->streams[pkt->stream_index]->time_base) -
3050
                (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3051
                <= ((double)duration / 1000000);
3052
        if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3053
            packet_queue_put(&is->audioq, pkt);
3054
        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3055
                   && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3056
            packet_queue_put(&is->videoq, pkt);
3057
        } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3058
            packet_queue_put(&is->subtitleq, pkt);
3059
        } else {
3060
            av_packet_unref(pkt);
3061
        }
3062
    }
3063
3064
    ret = 0;
3065
 fail:
3066
    if (ic && !is->ic)
3067
        avformat_close_input(&ic);
3068
3069
    if (ret != 0) {
3070
        SDL_Event event;
3071
3072
        event.type = FF_QUIT_EVENT;
3073
        event.user.data1 = is;
3074
        SDL_PushEvent(&event);
3075
    }
3076
    SDL_DestroyMutex(wait_mutex);
3077
    return 0;
3078
}
3079
3080
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3081
{
3082
    VideoState *is;
3083
3084
    is = av_mallocz(sizeof(VideoState));
3085
    if (!is)
3086
        return NULL;
3087
    is->last_video_stream = is->video_stream = -1;
3088
    is->last_audio_stream = is->audio_stream = -1;
3089
    is->last_subtitle_stream = is->subtitle_stream = -1;
3090
    is->filename = av_strdup(filename);
3091
    if (!is->filename)
3092
        goto fail;
3093
    is->iformat = iformat;
3094
    is->ytop    = 0;
3095
    is->xleft   = 0;
3096
3097
    /* start video display */
3098
    if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3099
        goto fail;
3100
    if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3101
        goto fail;
3102
    if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3103
        goto fail;
3104
3105
    if (packet_queue_init(&is->videoq) < 0 ||
3106
        packet_queue_init(&is->audioq) < 0 ||
3107
        packet_queue_init(&is->subtitleq) < 0)
3108
        goto fail;
3109
3110
    if (!(is->continue_read_thread = SDL_CreateCond())) {
3111
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3112
        goto fail;
3113
    }
3114
3115
    init_clock(&is->vidclk, &is->videoq.serial);
3116
    init_clock(&is->audclk, &is->audioq.serial);
3117
    init_clock(&is->extclk, &is->extclk.serial);
3118
    is->audio_clock_serial = -1;
3119
    if (startup_volume < 0)
3120
        av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3121
    if (startup_volume > 100)
3122
        av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3123
    startup_volume = av_clip(startup_volume, 0, 100);
3124
    startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3125
    is->audio_volume = startup_volume;
3126
    is->muted = 0;
3127
    is->av_sync_type = av_sync_type;
3128
    is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3129
    if (!is->read_tid) {
3130
        av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3131
fail:
3132
        stream_close(is);
3133
        return NULL;
3134
    }
3135
    return is;
3136
}
3137
3138
static void stream_cycle_channel(VideoState *is, int codec_type)
3139
{
3140
    AVFormatContext *ic = is->ic;
3141
    int start_index, stream_index;
3142
    int old_index;
3143
    AVStream *st;
3144
    AVProgram *p = NULL;
3145
    int nb_streams = is->ic->nb_streams;
3146
3147
    if (codec_type == AVMEDIA_TYPE_VIDEO) {
3148
        start_index = is->last_video_stream;
3149
        old_index = is->video_stream;
3150
    } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3151
        start_index = is->last_audio_stream;
3152
        old_index = is->audio_stream;
3153
    } else {
3154
        start_index = is->last_subtitle_stream;
3155
        old_index = is->subtitle_stream;
3156
    }
3157
    stream_index = start_index;
3158
3159
    if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3160
        p = av_find_program_from_stream(ic, NULL, is->video_stream);
3161
        if (p) {
3162
            nb_streams = p->nb_stream_indexes;
3163
            for (start_index = 0; start_index < nb_streams; start_index++)
3164
                if (p->stream_index[start_index] == stream_index)
3165
                    break;
3166
            if (start_index == nb_streams)
3167
                start_index = -1;
3168
            stream_index = start_index;
3169
        }
3170
    }
3171
3172
    for (;;) {
3173
        if (++stream_index >= nb_streams)
3174
        {
3175
            if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3176
            {
3177
                stream_index = -1;
3178
                is->last_subtitle_stream = -1;
3179
                goto the_end;
3180
            }
3181
            if (start_index == -1)
3182
                return;
3183
            stream_index = 0;
3184
        }
3185
        if (stream_index == start_index)
3186
            return;
3187
        st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3188
        if (st->codecpar->codec_type == codec_type) {
3189
            /* check that parameters are OK */
3190
            switch (codec_type) {
3191
            case AVMEDIA_TYPE_AUDIO:
3192
                if (st->codecpar->sample_rate != 0 &&
3193
                    st->codecpar->channels != 0)
3194
                    goto the_end;
3195
                break;
3196
            case AVMEDIA_TYPE_VIDEO:
3197
            case AVMEDIA_TYPE_SUBTITLE:
3198
                goto the_end;
3199
            default:
3200
                break;
3201
            }
3202
        }
3203
    }
3204
 the_end:
3205
    if (p && stream_index != -1)
3206
        stream_index = p->stream_index[stream_index];
3207
    av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3208
           av_get_media_type_string(codec_type),
3209
           old_index,
3210
           stream_index);
3211
3212
    stream_component_close(is, old_index);
3213
    stream_component_open(is, stream_index);
3214
}
3215
3216
3217
static void toggle_full_screen(VideoState *is)
3218
{
3219
    is_full_screen = !is_full_screen;
3220
    SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3221
}
3222
3223
static void toggle_audio_display(VideoState *is)
3224
{
3225
    int next = is->show_mode;
3226
    do {
3227
        next = (next + 1) % SHOW_MODE_NB;
3228
    } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3229
    if (is->show_mode != next) {
3230
        is->force_refresh = 1;
3231
        is->show_mode = next;
3232
    }
3233
}
3234
3235
static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3236
    double remaining_time = 0.0;
3237
    SDL_PumpEvents();
3238
    while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3239
        if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3240
            SDL_ShowCursor(0);
3241
            cursor_hidden = 1;
3242
        }
3243
        if (remaining_time > 0.0)
3244
            av_usleep((int64_t)(remaining_time * 1000000.0));
3245
        remaining_time = REFRESH_RATE;
3246
        if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3247
            video_refresh(is, &remaining_time);
3248
        SDL_PumpEvents();
3249
    }
3250
}
3251
3252
static void seek_chapter(VideoState *is, int incr)
3253
{
3254
    int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3255
    int i;
3256
3257
    if (!is->ic->nb_chapters)
3258
        return;
3259
3260
    /* find the current chapter */
3261
    for (i = 0; i < is->ic->nb_chapters; i++) {
3262
        AVChapter *ch = is->ic->chapters[i];
3263
        if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3264
            i--;
3265
            break;
3266
        }
3267
    }
3268
3269
    i += incr;
3270
    i = FFMAX(i, 0);
3271
    if (i >= is->ic->nb_chapters)
3272
        return;
3273
3274
    av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3275
    stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3276
                                 AV_TIME_BASE_Q), 0, 0);
3277
}
3278
3279
/* handle an event sent by the GUI */
3280
static void event_loop(VideoState *cur_stream)
3281
{
3282
    SDL_Event event;
3283
    double incr, pos, frac;
3284
3285
    for (;;) {
3286
        double x;
3287
        refresh_loop_wait_event(cur_stream, &event);
3288
        switch (event.type) {
3289
        case SDL_KEYDOWN:
3290
            if (exit_on_keydown || event.key.keysym.sym == SDLK_ESCAPE || event.key.keysym.sym == SDLK_q) {
3291
                do_exit(cur_stream);
3292
                break;
3293
            }
3294
            // If we don't yet have a window, skip all key events, because read_thread might still be initializing...
3295
            if (!cur_stream->width)
3296
                continue;
3297
            switch (event.key.keysym.sym) {
3298
            case SDLK_f:
3299
                toggle_full_screen(cur_stream);
3300
                cur_stream->force_refresh = 1;
3301
                break;
3302
            case SDLK_p:
3303
            case SDLK_SPACE:
3304
                toggle_pause(cur_stream);
3305
                break;
3306
            case SDLK_m:
3307
                toggle_mute(cur_stream);
3308
                break;
3309
            case SDLK_KP_MULTIPLY:
3310
            case SDLK_0:
3311
                update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3312
                break;
3313
            case SDLK_KP_DIVIDE:
3314
            case SDLK_9:
3315
                update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3316
                break;
3317
            case SDLK_s: // S: Step to next frame
3318
                step_to_next_frame(cur_stream);
3319
                break;
3320
            case SDLK_a:
3321
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3322
                break;
3323
            case SDLK_v:
3324
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3325
                break;
3326
            case SDLK_c:
3327
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3328
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3329
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3330
                break;
3331
            case SDLK_t:
3332
                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3333
                break;
3334
            case SDLK_w:
3335
#if CONFIG_AVFILTER
3336
                if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3337
                    if (++cur_stream->vfilter_idx >= nb_vfilters)
3338
                        cur_stream->vfilter_idx = 0;
3339
                } else {
3340
                    cur_stream->vfilter_idx = 0;
3341
                    toggle_audio_display(cur_stream);
3342
                }
3343
#else
3344
                toggle_audio_display(cur_stream);
3345
#endif
3346
                break;
3347
            case SDLK_PAGEUP:
3348
                if (cur_stream->ic->nb_chapters <= 1) {
3349
                    incr = 600.0;
3350
                    goto do_seek;
3351
                }
3352
                seek_chapter(cur_stream, 1);
3353
                break;
3354
            case SDLK_PAGEDOWN:
3355
                if (cur_stream->ic->nb_chapters <= 1) {
3356
                    incr = -600.0;
3357
                    goto do_seek;
3358
                }
3359
                seek_chapter(cur_stream, -1);
3360
                break;
3361
            case SDLK_LEFT:
3362
                incr = seek_interval ? -seek_interval : -10.0;
3363
                goto do_seek;
3364
            case SDLK_RIGHT:
3365
                incr = seek_interval ? seek_interval : 10.0;
3366
                goto do_seek;
3367
            case SDLK_UP:
3368
                incr = 60.0;
3369
                goto do_seek;
3370
            case SDLK_DOWN:
3371
                incr = -60.0;
3372
            do_seek:
3373
                    if (seek_by_bytes) {
3374
                        pos = -1;
3375
                        if (pos < 0 && cur_stream->video_stream >= 0)
3376
                            pos = frame_queue_last_pos(&cur_stream->pictq);
3377
                        if (pos < 0 && cur_stream->audio_stream >= 0)
3378
                            pos = frame_queue_last_pos(&cur_stream->sampq);
3379
                        if (pos < 0)
3380
                            pos = avio_tell(cur_stream->ic->pb);
3381
                        if (cur_stream->ic->bit_rate)
3382
                            incr *= cur_stream->ic->bit_rate / 8.0;
3383
                        else
3384
                            incr *= 180000.0;
3385
                        pos += incr;
3386
                        stream_seek(cur_stream, pos, incr, 1);
3387
                    } else {
3388
                        pos = get_master_clock(cur_stream);
3389
                        if (isnan(pos))
3390
                            pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3391
                        pos += incr;
3392
                        if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3393
                            pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3394
                        stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3395
                    }
3396
                break;
3397
            default:
3398
                break;
3399
            }
3400
            break;
3401
        case SDL_MOUSEBUTTONDOWN:
3402
            if (exit_on_mousedown) {
3403
                do_exit(cur_stream);
3404
                break;
3405
            }
3406
            if (event.button.button == SDL_BUTTON_LEFT) {
3407
                static int64_t last_mouse_left_click = 0;
3408
                if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3409
                    toggle_full_screen(cur_stream);
3410
                    cur_stream->force_refresh = 1;
3411
                    last_mouse_left_click = 0;
3412
                } else {
3413
                    last_mouse_left_click = av_gettime_relative();
3414
                }
3415
            }
3416
        case SDL_MOUSEMOTION:
3417
            if (cursor_hidden) {
3418
                SDL_ShowCursor(1);
3419
                cursor_hidden = 0;
3420
            }
3421
            cursor_last_shown = av_gettime_relative();
3422
            if (event.type == SDL_MOUSEBUTTONDOWN) {
3423
                if (event.button.button != SDL_BUTTON_RIGHT)
3424
                    break;
3425
                x = event.button.x;
3426
            } else {
3427
                if (!(event.motion.state & SDL_BUTTON_RMASK))
3428
                    break;
3429
                x = event.motion.x;
3430
            }
3431
                if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3432
                    uint64_t size =  avio_size(cur_stream->ic->pb);
3433
                    stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3434
                } else {
3435
                    int64_t ts;
3436
                    int ns, hh, mm, ss;
3437
                    int tns, thh, tmm, tss;
3438
                    tns  = cur_stream->ic->duration / 1000000LL;
3439
                    thh  = tns / 3600;
3440
                    tmm  = (tns % 3600) / 60;
3441
                    tss  = (tns % 60);
3442
                    frac = x / cur_stream->width;
3443
                    ns   = frac * tns;
3444
                    hh   = ns / 3600;
3445
                    mm   = (ns % 3600) / 60;
3446
                    ss   = (ns % 60);
3447
                    av_log(NULL, AV_LOG_INFO,
3448
                           "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3449
                            hh, mm, ss, thh, tmm, tss);
3450
                    ts = frac * cur_stream->ic->duration;
3451
                    if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3452
                        ts += cur_stream->ic->start_time;
3453
                    stream_seek(cur_stream, ts, 0, 0);
3454
                }
3455
            break;
3456
        case SDL_WINDOWEVENT:
3457
            switch (event.window.event) {
3458
                case SDL_WINDOWEVENT_SIZE_CHANGED:
3459
                    screen_width  = cur_stream->width  = event.window.data1;
3460
                    screen_height = cur_stream->height = event.window.data2;
3461
                    if (cur_stream->vis_texture) {
3462
                        SDL_DestroyTexture(cur_stream->vis_texture);
3463
                        cur_stream->vis_texture = NULL;
3464
                    }
3465
                case SDL_WINDOWEVENT_EXPOSED:
3466
                    cur_stream->force_refresh = 1;
3467
            }
3468
            break;
3469
        case SDL_QUIT:
3470
        case FF_QUIT_EVENT:
3471
            do_exit(cur_stream);
3472
            break;
3473
        default:
3474
            break;
3475
        }
3476
    }
3477
}
3478
3479
static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3480
{
3481
    av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3482
    return opt_default(NULL, "video_size", arg);
3483
}
3484
3485
static int opt_width(void *optctx, const char *opt, const char *arg)
3486
{
3487
    screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3488
    return 0;
3489
}
3490
3491
static int opt_height(void *optctx, const char *opt, const char *arg)
3492
{
3493
    screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3494
    return 0;
3495
}
3496
3497
static int opt_format(void *optctx, const char *opt, const char *arg)
3498
{
3499
    file_iformat = av_find_input_format(arg);
3500
    if (!file_iformat) {
3501
        av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3502
        return AVERROR(EINVAL);
3503
    }
3504
    return 0;
3505
}
3506
3507
static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3508
{
3509
    av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3510
    return opt_default(NULL, "pixel_format", arg);
3511
}
3512
3513
static int opt_sync(void *optctx, const char *opt, const char *arg)
3514
{
3515
    if (!strcmp(arg, "audio"))
3516
        av_sync_type = AV_SYNC_AUDIO_MASTER;
3517
    else if (!strcmp(arg, "video"))
3518
        av_sync_type = AV_SYNC_VIDEO_MASTER;
3519
    else if (!strcmp(arg, "ext"))
3520
        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3521
    else {
3522
        av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3523
        exit(1);
3524
    }
3525
    return 0;
3526
}
3527
3528
static int opt_seek(void *optctx, const char *opt, const char *arg)
3529
{
3530
    start_time = parse_time_or_die(opt, arg, 1);
3531
    return 0;
3532
}
3533
3534
static int opt_duration(void *optctx, const char *opt, const char *arg)
3535
{
3536
    duration = parse_time_or_die(opt, arg, 1);
3537
    return 0;
3538
}
3539
3540
static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3541
{
3542
    show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3543
                !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3544
                !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3545
                parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3546
    return 0;
3547
}
3548
3549
static void opt_input_file(void *optctx, const char *filename)
3550
{
3551
    if (input_filename) {
3552
        av_log(NULL, AV_LOG_FATAL,
3553
               "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3554
                filename, input_filename);
3555
        exit(1);
3556
    }
3557
    if (!strcmp(filename, "-"))
3558
        filename = "pipe:";
3559
    input_filename = filename;
3560
}
3561
3562
static int opt_codec(void *optctx, const char *opt, const char *arg)
3563
{
3564
   const char *spec = strchr(opt, ':');
3565
   if (!spec) {
3566
       av_log(NULL, AV_LOG_ERROR,
3567
              "No media specifier was specified in '%s' in option '%s'\n",
3568
               arg, opt);
3569
       return AVERROR(EINVAL);
3570
   }
3571
   spec++;
3572
   switch (spec[0]) {
3573
   case 'a' :    audio_codec_name = arg; break;
3574
   case 's' : subtitle_codec_name = arg; break;
3575
   case 'v' :    video_codec_name = arg; break;
3576
   default:
3577
       av_log(NULL, AV_LOG_ERROR,
3578
              "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3579
       return AVERROR(EINVAL);
3580
   }
3581
   return 0;
3582
}
3583
3584
static int dummy;
3585
3586
static const OptionDef options[] = {
3587
    CMDUTILS_COMMON_OPTIONS
3588
    { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3589
    { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3590
    { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3591
    { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3592
    { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3593
    { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3594
    { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3595
    { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3596
    { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3597
    { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3598
    { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3599
    { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3600
    { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3601
    { "seek_interval", OPT_FLOAT | HAS_ARG, { &seek_interval }, "set seek interval for left/right keys, in seconds", "seconds" },
3602
    { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3603
    { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3604
    { "alwaysontop", OPT_BOOL, { &alwaysontop }, "window always on top" },
3605
    { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3606
    { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3607
    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3608
    { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3609
    { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3610
    { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3611
    { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3612
    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3613
    { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3614
    { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3615
    { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3616
    { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3617
    { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3618
    { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3619
    { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3620
    { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3621
    { "left", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_left }, "set the x position for the left of the window", "x pos" },
3622
    { "top", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_top }, "set the y position for the top of the window", "y pos" },
3623
#if CONFIG_AVFILTER
3624
    { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3625
    { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3626
#endif
3627
    { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3628
    { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3629
    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3630
    { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3631
    { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3632
    { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3633
    { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3634
    { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3635
    { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3636
    { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3637
        "read and decode the streams to fill missing information with heuristics" },
3638
    { "filter_threads", HAS_ARG | OPT_INT | OPT_EXPERT, { &filter_nbthreads }, "number of filter threads per graph" },
3639
    { NULL, },
3640
};
3641
3642
static void show_usage(void)
3643
{
3644
    av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3645
    av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3646
    av_log(NULL, AV_LOG_INFO, "\n");
3647
}
3648
3649
void show_help_default(const char *opt, const char *arg)
3650
{
3651
    av_log_set_callback(log_callback_help);
3652
    show_usage();
3653
    show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3654
    show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3655
    printf("\n");
3656
    show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3657
    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3658
#if !CONFIG_AVFILTER
3659
    show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3660
#else
3661
    show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3662
#endif
3663
    printf("\nWhile playing:\n"
3664
           "q, ESC              quit\n"
3665
           "f                   toggle full screen\n"
3666
           "p, SPC              pause\n"
3667
           "m                   toggle mute\n"
3668
           "9, 0                decrease and increase volume respectively\n"
3669
           "/, *                decrease and increase volume respectively\n"