FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/src_movie.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 240 377 63.7%
Functions: 10 13 76.9%
Branches: 116 244 47.5%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2008 Victor Paesa
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * movie video source
25 *
26 * @todo support a PTS correction mechanism
27 */
28
29 #include "config_components.h"
30
31 #include <stdint.h>
32
33 #include "libavutil/attributes.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/channel_layout.h"
36 #include "libavutil/mem.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/internal.h"
39
40 #include "libavcodec/avcodec.h"
41
42 #include "libavformat/avformat.h"
43
44 #include "audio.h"
45 #include "avfilter.h"
46 #include "filters.h"
47 #include "formats.h"
48 #include "video.h"
49
50 typedef struct MovieStream {
51 AVFilterLink *link;
52 AVStream *st;
53 AVCodecContext *codec_ctx;
54 int64_t discontinuity_threshold;
55 int64_t last_pts;
56 AVFrame *frame;
57 int eof;
58 } MovieStream;
59
60 typedef struct MovieContext {
61 /* common A/V fields */
62 const AVClass *class;
63 int64_t seek_point; ///< seekpoint in microseconds
64 double seek_point_d;
65 char *format_name;
66 char *file_name;
67 char *stream_specs; /**< user-provided list of streams, separated by + */
68 int stream_index; /**< for compatibility */
69 int loop_count;
70 int64_t discontinuity_threshold;
71 int64_t ts_offset;
72 int dec_threads;
73
74 AVPacket *pkt;
75 AVFormatContext *format_ctx;
76
77 int eof;
78 int max_stream_index; /**< max stream # actually used for output */
79 MovieStream *st; /**< array of all streams, one per output */
80 int *out_index; /**< stream number -> output number map, or -1 */
81 AVDictionary *format_opts;
82 } MovieContext;
83
84 #define OFFSET(x) offsetof(MovieContext, x)
85 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM
86
87 static const AVOption movie_options[]= {
88 { "filename", NULL, OFFSET(file_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
89 { "format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
90 { "f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
91 { "stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
92 { "si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
93 { "seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS },
94 { "sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS },
95 { "streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS },
96 { "s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS },
97 { "loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, FLAGS },
98 { "discontinuity", "set discontinuity threshold", OFFSET(discontinuity_threshold), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, FLAGS },
99 { "dec_threads", "set the number of threads for decoding", OFFSET(dec_threads), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
100 { "format_opts", "set format options for the opened file", OFFSET(format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
101 { NULL },
102 };
103
104 static int movie_config_output_props(AVFilterLink *outlink);
105
106 16 static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec)
107 {
108 16 int i, ret, already = 0, stream_id = -1;
109 char type_char[2], dummy;
110 16 AVStream *found = NULL;
111 enum AVMediaType type;
112
113 16 ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy);
114
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 16 if (ret >= 1 && ret <= 2) {
115 16 type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
116 16 ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0);
117
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 16 if (ret < 0) {
118 ✗ av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n",
119 av_get_media_type_string(type), stream_id);
120 ✗ return NULL;
121 }
122 16 return avf->streams[ret];
123 }
124 ✗ for (i = 0; i < avf->nb_streams; i++) {
125 ✗ ret = avformat_match_stream_specifier(avf, avf->streams[i], spec);
126 ✗ if (ret < 0) {
127 ✗ av_log(log, AV_LOG_ERROR,
128 "Invalid stream specifier \"%s\"\n", spec);
129 ✗ return NULL;
130 }
131 ✗ if (!ret)
132 ✗ continue;
133 ✗ if (avf->streams[i]->discard != AVDISCARD_ALL) {
134 ✗ already++;
135 ✗ continue;
136 }
137 ✗ if (found) {
138 ✗ av_log(log, AV_LOG_WARNING,
139 "Ambiguous stream specifier \"%s\", using #%d\n", spec, i);
140 ✗ break;
141 }
142 ✗ found = avf->streams[i];
143 }
144 ✗ if (!found) {
145 ✗ av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec,
146 already ? "matched only already used streams" :
147 "did not match any stream");
148 ✗ return NULL;
149 }
150 ✗ if (found->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
151 ✗ found->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
152 ✗ av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream,"
153 "currently unsupported by libavfilter\n", spec,
154 ✗ av_get_media_type_string(found->codecpar->codec_type));
155 ✗ return NULL;
156 }
157 ✗ return found;
158 }
159
160 3937 static int get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
161 {
162 int linesize_align[AV_NUM_DATA_POINTERS];
163 3937 MovieStream *st = avctx->opaque;
164 3937 AVFilterLink *outlink = st->link;
165 3937 int w, h, ow, oh, copy = 0;
166 AVFrame *new;
167
168 3937 h = oh = frame->height;
169 3937 w = ow = frame->width;
170
171 3937 copy = frame->format != outlink->format;
172
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 3937 switch (avctx->codec_type) {
173 3622 case AVMEDIA_TYPE_VIDEO:
174
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 3622 if (w != outlink->w || h != outlink->h)
175 42 copy |= 1;
176 3622 break;
177 315 case AVMEDIA_TYPE_AUDIO:
178
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 630 if (outlink->sample_rate != frame->sample_rate ||
179 315 av_channel_layout_compare(&outlink->ch_layout, &frame->ch_layout))
180 ✗ copy |= 1;
181 315 break;
182 }
183
184
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 3937 if (copy || !(avctx->codec->capabilities & AV_CODEC_CAP_DR1))
185 42 return avcodec_default_get_buffer2(avctx, frame, flags);
186
187
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 3895 switch (avctx->codec_type) {
188 3580 case AVMEDIA_TYPE_VIDEO:
189 3580 avcodec_align_dimensions2(avctx, &w, &h, linesize_align);
190 3580 new = ff_default_get_video_buffer(outlink, w, h);
191 3580 break;
192 315 case AVMEDIA_TYPE_AUDIO:
193 315 new = ff_default_get_audio_buffer(outlink, frame->nb_samples);
194 315 break;
195 ✗ default:
196 ✗ return -1;
197 }
198
199 3895 av_frame_copy_props(new, frame);
200 3895 av_frame_unref(frame);
201 3895 av_frame_move_ref(frame, new);
202 3895 av_frame_free(&new);
203
204 3895 frame->width = ow;
205 3895 frame->height = oh;
206
207 3895 return 0;
208 }
209
210 16 static int open_stream(AVFilterContext *ctx, MovieStream *st, int dec_threads)
211 {
212 const AVCodec *codec;
213 int ret;
214
215 16 codec = avcodec_find_decoder(st->st->codecpar->codec_id);
216
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 16 if (!codec) {
217 ✗ av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n");
218 ✗ return AVERROR(EINVAL);
219 }
220
221 16 st->codec_ctx = avcodec_alloc_context3(codec);
222
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 16 if (!st->codec_ctx)
223 ✗ return AVERROR(ENOMEM);
224
225 16 st->codec_ctx->opaque = st;
226 16 st->codec_ctx->get_buffer2 = get_buffer;
227 16 ret = avcodec_parameters_to_context(st->codec_ctx, st->st->codecpar);
228
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 16 if (ret < 0)
229 ✗ return ret;
230 16 st->codec_ctx->pkt_timebase = st->st->time_base;
231
232
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 16 if (!dec_threads)
233 16 dec_threads = ff_filter_get_nb_threads(ctx);
234 16 st->codec_ctx->thread_count = dec_threads;
235
236
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 16 if ((ret = avcodec_open2(st->codec_ctx, codec, NULL)) < 0) {
237 ✗ av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
238 ✗ return ret;
239 }
240
241 16 return 0;
242 }
243
244 ✗ static int guess_channel_layout(MovieStream *st, int st_index, void *log_ctx)
245 {
246 ✗ AVCodecParameters *dec_par = st->st->codecpar;
247 char buf[256];
248 ✗ AVChannelLayout chl = { 0 };
249
250 ✗ av_channel_layout_default(&chl, dec_par->ch_layout.nb_channels);
251
252 ✗ if (!KNOWN(&chl)) {
253 ✗ av_log(log_ctx, AV_LOG_WARNING,
254 "Channel layout is not set in stream %d, and could not "
255 "be guessed from the number of channels (%d)\n",
256 st_index, dec_par->ch_layout.nb_channels);
257 ✗ return av_channel_layout_copy(&dec_par->ch_layout, &chl);
258 }
259
260 ✗ av_channel_layout_describe(&chl, buf, sizeof(buf));
261 ✗ av_log(log_ctx, AV_LOG_WARNING,
262 "Channel layout is not set in output stream %d, "
263 "guessed channel layout is '%s'\n",
264 st_index, buf);
265 ✗ return av_channel_layout_copy(&dec_par->ch_layout, &chl);
266 }
267
268 16 static av_cold int movie_common_init(AVFilterContext *ctx)
269 {
270 16 MovieContext *movie = ctx->priv;
271 16 const AVInputFormat *iformat = NULL;
272 int64_t timestamp;
273 16 int nb_streams = 1, ret, i;
274 char default_streams[16], *stream_specs, *spec, *cursor;
275 AVStream *st;
276
277
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 16 if (!movie->file_name) {
278 ✗ av_log(ctx, AV_LOG_ERROR, "No filename provided!\n");
279 ✗ return AVERROR(EINVAL);
280 }
281
282 16 movie->seek_point = movie->seek_point_d * 1000000 + 0.5;
283
284 16 stream_specs = movie->stream_specs;
285
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 16 if (!stream_specs) {
286 16 snprintf(default_streams, sizeof(default_streams), "d%c%d",
287
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 16 !strcmp(ctx->filter->name, "amovie") ? 'a' : 'v',
288 movie->stream_index);
289 16 stream_specs = default_streams;
290 }
291
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 80 for (cursor = stream_specs; *cursor; cursor++)
292
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 64 if (*cursor == '+')
293 ✗ nb_streams++;
294
295
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 16 if (movie->loop_count != 1 && nb_streams != 1) {
296 ✗ av_log(ctx, AV_LOG_ERROR,
297 "Loop with several streams is currently unsupported\n");
298 ✗ return AVERROR_PATCHWELCOME;
299 }
300
301 // Try to find the movie format (container)
302
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 16 iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL;
303
304 16 movie->format_ctx = NULL;
305
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 16 if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, &movie->format_opts)) < 0) {
306 ✗ av_log(ctx, AV_LOG_ERROR,
307 "Failed to avformat_open_input '%s'\n", movie->file_name);
308 ✗ return ret;
309 }
310
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 16 if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0)
311 ✗ av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n");
312
313 // if seeking requested, we execute it
314
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 16 if (movie->seek_point > 0) {
315 ✗ timestamp = movie->seek_point;
316 // add the stream start time, should it exist
317 ✗ if (movie->format_ctx->start_time != AV_NOPTS_VALUE) {
318 ✗ if (timestamp > 0 && movie->format_ctx->start_time > INT64_MAX - timestamp) {
319 ✗ av_log(ctx, AV_LOG_ERROR,
320 "%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n",
321 ✗ movie->file_name, movie->format_ctx->start_time, movie->seek_point);
322 ✗ return AVERROR(EINVAL);
323 }
324 ✗ timestamp += movie->format_ctx->start_time;
325 }
326 ✗ if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) {
327 ✗ av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n",
328 movie->file_name, timestamp);
329 ✗ return ret;
330 }
331 }
332
333
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 35 for (i = 0; i < movie->format_ctx->nb_streams; i++)
334 19 movie->format_ctx->streams[i]->discard = AVDISCARD_ALL;
335
336 16 movie->pkt = av_packet_alloc();
337
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 16 if (!movie->pkt)
338 ✗ return AVERROR(ENOMEM);
339 16 movie->st = av_calloc(nb_streams, sizeof(*movie->st));
340
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 16 if (!movie->st)
341 ✗ return AVERROR(ENOMEM);
342
343
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 32 for (i = 0; i < nb_streams; i++) {
344 16 spec = av_strtok(stream_specs, "+", &cursor);
345
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 16 if (!spec)
346 ✗ return AVERROR_BUG;
347 16 stream_specs = NULL; /* for next strtok */
348 16 st = find_stream(ctx, movie->format_ctx, spec);
349
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 16 if (!st)
350 ✗ return AVERROR(EINVAL);
351 16 st->discard = AVDISCARD_DEFAULT;
352 16 movie->st[i].st = st;
353 16 movie->max_stream_index = FFMAX(movie->max_stream_index, st->index);
354 16 movie->st[i].discontinuity_threshold =
355 16 av_rescale_q(movie->discontinuity_threshold, AV_TIME_BASE_Q, st->time_base);
356
357 16 movie->st[i].frame = av_frame_alloc();
358
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 16 if (!movie->st[i].frame)
359 ✗ return AVERROR(ENOMEM);
360 }
361
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 16 if (av_strtok(NULL, "+", &cursor))
362 ✗ return AVERROR_BUG;
363
364 16 movie->out_index = av_calloc(movie->max_stream_index + 1,
365 sizeof(*movie->out_index));
366
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 16 if (!movie->out_index)
367 ✗ return AVERROR(ENOMEM);
368
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 32 for (i = 0; i <= movie->max_stream_index; i++)
369 16 movie->out_index[i] = -1;
370
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 32 for (i = 0; i < nb_streams; i++) {
371 16 AVFilterPad pad = { 0 };
372 16 movie->out_index[movie->st[i].st->index] = i;
373 16 pad.type = movie->st[i].st->codecpar->codec_type;
374 16 pad.name = av_asprintf("out%d", i);
375
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 16 if (!pad.name)
376 ✗ return AVERROR(ENOMEM);
377 16 pad.config_props = movie_config_output_props;
378
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 16 if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
379 ✗ return ret;
380
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 16 if ( movie->st[i].st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
381
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 3 !KNOWN(&movie->st[i].st->codecpar->ch_layout)) {
382 ✗ ret = guess_channel_layout(&movie->st[i], i, ctx);
383 ✗ if (ret < 0)
384 ✗ return ret;
385 }
386 16 ret = open_stream(ctx, &movie->st[i], movie->dec_threads);
387
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 16 if (ret < 0)
388 ✗ return ret;
389 }
390
391 16 av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n",
392 movie->seek_point, movie->format_name, movie->file_name,
393 movie->stream_index);
394
395 16 return 0;
396 }
397
398 16 static av_cold void movie_uninit(AVFilterContext *ctx)
399 {
400 16 MovieContext *movie = ctx->priv;
401 int i;
402
403
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 32 for (i = 0; i < ctx->nb_outputs; i++) {
404
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 16 if (movie->st[i].st)
405 16 avcodec_free_context(&movie->st[i].codec_ctx);
406 16 av_frame_free(&movie->st[i].frame);
407 }
408 16 av_packet_free(&movie->pkt);
409 16 av_freep(&movie->st);
410 16 av_freep(&movie->out_index);
411
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 16 if (movie->format_ctx)
412 16 avformat_close_input(&movie->format_ctx);
413 16 }
414
415 16 static int movie_query_formats(const AVFilterContext *ctx,
416 AVFilterFormatsConfig **cfg_in,
417 AVFilterFormatsConfig **cfg_out)
418 {
419 16 const MovieContext *movie = ctx->priv;
420 16 int list[] = { 0, -1 };
421 16 AVChannelLayout list64[] = { { 0 }, { 0 } };
422 int i, ret;
423
424
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 32 for (i = 0; i < ctx->nb_outputs; i++) {
425 16 const MovieStream *st = &movie->st[i];
426 16 const AVCodecParameters *c = st->st->codecpar;
427 16 AVFilterFormatsConfig *cfg = cfg_out[i];
428
429
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 16 switch (c->codec_type) {
430 13 case AVMEDIA_TYPE_VIDEO:
431 13 list[0] = c->format;
432
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 13 if ((ret = ff_formats_ref(ff_make_format_list(list), &cfg->formats)) < 0)
433 ✗ return ret;
434 13 list[0] = c->color_space;
435
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 13 if ((ret = ff_formats_ref(ff_make_format_list(list), &cfg->color_spaces)) < 0)
436 ✗ return ret;
437 13 list[0] = c->color_range;
438
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 13 if ((ret = ff_formats_ref(ff_make_format_list(list), &cfg->color_ranges)) < 0)
439 ✗ return ret;
440 13 break;
441 3 case AVMEDIA_TYPE_AUDIO:
442 3 list[0] = c->format;
443
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 3 if ((ret = ff_formats_ref(ff_make_format_list(list), &cfg->formats)) < 0)
444 ✗ return ret;
445 3 list[0] = c->sample_rate;
446
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 3 if ((ret = ff_formats_ref(ff_make_format_list(list), &cfg->samplerates)) < 0)
447 ✗ return ret;
448 3 list64[0] = c->ch_layout;
449
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 3 if ((ret = ff_channel_layouts_ref(ff_make_channel_layout_list(list64),
450 &cfg->channel_layouts)) < 0)
451 ✗ return ret;
452 3 break;
453 }
454 }
455
456 16 return 0;
457 }
458
459 16 static int movie_config_output_props(AVFilterLink *outlink)
460 {
461 16 FilterLink *l = ff_filter_link(outlink);
462 16 AVFilterContext *ctx = outlink->src;
463 16 MovieContext *movie = ctx->priv;
464 16 unsigned out_id = FF_OUTLINK_IDX(outlink);
465 16 MovieStream *st = &movie->st[out_id];
466 16 AVCodecParameters *c = st->st->codecpar;
467
468 16 outlink->time_base = st->st->time_base;
469
470
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 16 switch (c->codec_type) {
471 13 case AVMEDIA_TYPE_VIDEO:
472 13 outlink->w = c->width;
473 13 outlink->h = c->height;
474 13 l->frame_rate = st->st->r_frame_rate;
475 13 break;
476 3 case AVMEDIA_TYPE_AUDIO:
477 3 break;
478 }
479
480 16 st->link = outlink;
481
482 16 return 0;
483 }
484
485 ✗ static int rewind_file(AVFilterContext *ctx)
486 {
487 ✗ MovieContext *movie = ctx->priv;
488 ✗ int64_t timestamp = movie->seek_point;
489 int ret, i;
490
491 ✗ if (movie->format_ctx->start_time != AV_NOPTS_VALUE)
492 ✗ timestamp += movie->format_ctx->start_time;
493 ✗ ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD);
494 ✗ if (ret < 0) {
495 ✗ av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret));
496 ✗ movie->loop_count = 1; /* do not try again */
497 ✗ return ret;
498 }
499
500 ✗ for (i = 0; i < ctx->nb_outputs; i++) {
501 ✗ avcodec_flush_buffers(movie->st[i].codec_ctx);
502 }
503 ✗ return 0;
504 }
505
506 16 static int flush_decoder(AVFilterContext *ctx, int i)
507 {
508 16 MovieContext *movie = ctx->priv;
509 16 AVCodecContext *dec = movie->st[i].codec_ctx;
510
511 16 return avcodec_send_packet(dec, NULL);
512 }
513
514 4035 static int decode_packet(AVFilterContext *ctx, int i)
515 {
516 4035 AVFilterLink *outlink = ctx->outputs[i];
517 4035 MovieContext *movie = ctx->priv;
518 4035 MovieStream *st = &movie->st[i];
519 4035 AVCodecContext *dec = movie->st[i].codec_ctx;
520 4035 AVFrame *frame = movie->st[i].frame;
521 4035 AVPacket *pkt = movie->pkt;
522 4035 int ret = 0;
523
524 // do not output more than 1 frame per iteration,
525 // so try to receive_frame first
526 4035 ret = avcodec_receive_frame(dec, frame);
527
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 4035 if (!movie->eof && ret == AVERROR(EAGAIN)) {
528 3949 ret = avcodec_send_packet(dec, pkt);
529 3949 av_packet_unref(pkt);
530
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 3949 if (ret < 0)
531 ✗ return ret;
532 3949 ret = avcodec_receive_frame(dec, frame);
533 }
534
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 4035 if (ret < 0) {
535 // those two return values are special and mean there is no output
536 // frame available, but there were no errors during decoding
537
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 98 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
538 98 return 0;
539 ✗ return ret;
540 }
541
542 // output a single frame
543
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 3937 if (ret >= 0) {
544 3937 frame->pts = frame->best_effort_timestamp;
545
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 3937 if (frame->pts != AV_NOPTS_VALUE) {
546
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 3933 if (movie->ts_offset)
547 ✗ frame->pts += av_rescale_q_rnd(movie->ts_offset, AV_TIME_BASE_Q, outlink->time_base, AV_ROUND_UP);
548
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 3933 if (st->discontinuity_threshold) {
549 ✗ if (st->last_pts != AV_NOPTS_VALUE) {
550 ✗ int64_t diff = frame->pts - st->last_pts;
551 ✗ if (diff < 0 || diff > st->discontinuity_threshold) {
552 ✗ av_log(ctx, AV_LOG_VERBOSE, "Discontinuity in stream:%d diff:%"PRId64"\n", i, diff);
553 ✗ movie->ts_offset += av_rescale_q_rnd(-diff, outlink->time_base, AV_TIME_BASE_Q, AV_ROUND_UP);
554 ✗ frame->pts -= diff;
555 }
556 }
557 }
558 3933 st->last_pts = frame->pts;
559 }
560 3937 ret = ff_filter_frame(outlink, av_frame_clone(frame));
561
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 3937 if (ret < 0)
562 ✗ return ret;
563
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 3937 if (ret == 0)
564 3937 return 1;
565 }
566
567 ✗ return 0;
568 }
569
570 4617 static int activate(AVFilterContext *ctx)
571 {
572 4617 MovieContext *movie = ctx->priv;
573 4617 int wanted = 0, ret = 0;
574
575
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 9234 for (int i = 0; i < ctx->nb_outputs; i++) {
576
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 4617 if (ff_outlink_frame_wanted(ctx->outputs[i]))
577 4272 wanted++;
578 }
579
580
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 4617 if (wanted == 0)
581 345 return FFERROR_NOT_READY;
582
583
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 4272 if (!movie->eof) {
584
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 4186 if (!movie->pkt->buf)
585 4186 ret = av_read_frame(movie->format_ctx, movie->pkt);
586
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 4186 if (ret < 0) {
587 16 movie->eof = 1;
588
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 32 for (int i = 0; i < ctx->nb_outputs; i++)
589 16 flush_decoder(ctx, i);
590 16 ff_filter_set_ready(ctx, 100);
591 16 return 0;
592 } else {
593
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 4170 int pkt_out_id = movie->pkt->stream_index > movie->max_stream_index ? -1 :
594 3949 movie->out_index[movie->pkt->stream_index];
595
596
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 4170 if (pkt_out_id >= 0) {
597 3949 ret = decode_packet(ctx, pkt_out_id);
598 } else {
599 221 av_packet_unref(movie->pkt);
600 }
601 4170 ff_filter_set_ready(ctx, 100);
602 4170 return (ret <= 0) ? ret : 0;
603 }
604 } else {
605 86 int nb_eofs = 0;
606
607
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 172 for (int i = 0; i < ctx->nb_outputs; i++) {
608
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 86 if (!movie->st[i].eof) {
609 86 ret = decode_packet(ctx, i);
610
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 86 if (ret <= 0)
611 16 movie->st[i].eof = 1;
612 }
613 86 nb_eofs += movie->st[i].eof == 1;
614 }
615
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 86 if (nb_eofs == ctx->nb_outputs && movie->loop_count != 1) {
616 ✗ ret = rewind_file(ctx);
617 ✗ if (ret < 0)
618 ✗ return ret;
619 ✗ movie->loop_count -= movie->loop_count > 1;
620 ✗ av_log(ctx, AV_LOG_VERBOSE, "Stream finished, looping.\n");
621 ✗ ff_filter_set_ready(ctx, 100);
622 ✗ for (int i = 0; i < ctx->nb_outputs; i++)
623 ✗ movie->st[i].eof = 0;
624 ✗ movie->eof = 0;
625 ✗ return 0;
626 } else {
627
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 172 for (int i = 0; i < ctx->nb_outputs; i++) {
628
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 86 if (movie->st[i].eof) {
629 16 ff_outlink_set_status(ctx->outputs[i], AVERROR_EOF, movie->st[i].last_pts);
630 16 nb_eofs++;
631 }
632 }
633 }
634
635
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 86 if (nb_eofs < ctx->nb_outputs)
636 70 ff_filter_set_ready(ctx, 100);
637 86 return 0;
638 }
639
640 return FFERROR_NOT_READY;
641 }
642
643 ✗ static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
644 char *res, int res_len, int flags)
645 {
646 ✗ MovieContext *movie = ctx->priv;
647 ✗ int ret = AVERROR(ENOSYS);
648
649 ✗ if (!strcmp(cmd, "seek")) {
650 int idx, flags, i;
651 int64_t ts;
652 char tail[2];
653
654 ✗ if (sscanf(args, "%i|%"SCNi64"|%i %1s", &idx, &ts, &flags, tail) != 3)
655 ✗ return AVERROR(EINVAL);
656
657 ✗ ret = av_seek_frame(movie->format_ctx, idx, ts, flags);
658 ✗ if (ret < 0)
659 ✗ return ret;
660
661 ✗ for (i = 0; i < ctx->nb_outputs; i++) {
662 ✗ avcodec_flush_buffers(movie->st[i].codec_ctx);
663 }
664 ✗ return ret;
665 ✗ } else if (!strcmp(cmd, "get_duration")) {
666 int print_len;
667 char tail[2];
668
669 ✗ if (!res || res_len <= 0)
670 ✗ return AVERROR(EINVAL);
671
672 ✗ if (args && sscanf(args, "%1s", tail) == 1)
673 ✗ return AVERROR(EINVAL);
674
675 ✗ print_len = snprintf(res, res_len, "%"PRId64, movie->format_ctx->duration);
676 ✗ if (print_len < 0 || print_len >= res_len)
677 ✗ return AVERROR(EINVAL);
678
679 ✗ return 0;
680 }
681
682 ✗ return ret;
683 }
684
685 AVFILTER_DEFINE_CLASS_EXT(movie, "(a)movie", movie_options);
686
687 #if CONFIG_MOVIE_FILTER
688
689 const FFFilter ff_avsrc_movie = {
690 .p.name = "movie",
691 .p.description = NULL_IF_CONFIG_SMALL("Read from a movie source."),
692 .p.priv_class = &movie_class,
693 .p.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
694 .priv_size = sizeof(MovieContext),
695 .init = movie_common_init,
696 .activate = activate,
697 .uninit = movie_uninit,
698 FILTER_QUERY_FUNC2(movie_query_formats),
699
700 .process_command = process_command
701 };
702
703 #endif /* CONFIG_MOVIE_FILTER */
704
705 #if CONFIG_AMOVIE_FILTER
706
707 const FFFilter ff_avsrc_amovie = {
708 .p.name = "amovie",
709 .p.description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."),
710 .p.priv_class = &movie_class,
711 .p.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
712 .priv_size = sizeof(MovieContext),
713 .init = movie_common_init,
714 .activate = activate,
715 .uninit = movie_uninit,
716 FILTER_QUERY_FUNC2(movie_query_formats),
717
718 .process_command = process_command,
719 };
720
721 #endif /* CONFIG_AMOVIE_FILTER */
722