GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/mpeg12enc.c Lines: 598 687 87.0 %
Date: 2021-04-19 06:27:07 Branches: 320 413 77.5 %

Line Branch Exec Source
1
/*
2
 * MPEG-1/2 encoder
3
 * Copyright (c) 2000,2001 Fabrice Bellard
4
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22
23
/**
24
 * @file
25
 * MPEG-1/2 encoder
26
 */
27
28
#include <stdint.h>
29
30
#include "config.h"
31
#include "libavutil/attributes.h"
32
#include "libavutil/avassert.h"
33
#include "libavutil/log.h"
34
#include "libavutil/opt.h"
35
#include "libavutil/thread.h"
36
#include "libavutil/timecode.h"
37
#include "libavutil/stereo3d.h"
38
39
#include "avcodec.h"
40
#include "bytestream.h"
41
#include "mathops.h"
42
#include "mpeg12.h"
43
#include "mpeg12data.h"
44
#include "mpegutils.h"
45
#include "mpegvideo.h"
46
#include "profiles.h"
47
48
#if CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER
49
static const uint8_t svcd_scan_offset_placeholder[] = {
50
    0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
51
    0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
52
};
53
54
static uint8_t mv_penalty[MAX_FCODE + 1][MAX_DMV * 2 + 1];
55
static uint8_t fcode_tab[MAX_MV * 2 + 1];
56
57
static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2];
58
static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2];
59
60
/* simple include everything table for dc, first byte is bits
61
 * number next 3 are code */
62
static uint32_t mpeg1_lum_dc_uni[512];
63
static uint32_t mpeg1_chr_dc_uni[512];
64
65
#define A53_MAX_CC_COUNT 0x1f
66
#endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */
67
68
98
av_cold void ff_mpeg1_init_uni_ac_vlc(const RLTable *rl, uint8_t *uni_ac_vlc_len)
69
{
70
    int i;
71
72
12642
    for (i = 0; i < 128; i++) {
73
12544
        int level = i - 64;
74
        int run;
75
12544
        if (!level)
76
98
            continue;
77
808990
        for (run = 0; run < 64; run++) {
78
            int len, code;
79
796544
            int alevel = FFABS(level);
80
81
796544
            if (alevel > rl->max_level[0][run])
82
774788
                code = 111;                         /* rl->n */
83
            else
84
21756
                code = rl->index_run[0][run] + alevel - 1;
85
86
796544
            if (code < 111) {                       /* rl->n */
87
                /* length of VLC and sign */
88
21756
                len = rl->table_vlc[code][1] + 1;
89
            } else {
90
774788
                len = rl->table_vlc[111 /* rl->n */][1] + 6;
91
92
774788
                if (alevel < 128)
93
774788
                    len += 8;
94
                else
95
                    len += 16;
96
            }
97
98
796544
            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
99
        }
100
    }
101
98
}
102
103
#if CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER
104
49
static int find_frame_rate_index(MpegEncContext *s)
105
{
106
    int i;
107
49
    AVRational bestq = (AVRational) {0, 0};
108
    AVRational ext;
109
49
    AVRational target = av_inv_q(s->avctx->time_base);
110
111
441
    for (i = 1; i < 14; i++) {
112

441
        if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
113
            i >= 9)
114
49
            break;
115
116
1960
        for (ext.num=1; ext.num <= 4; ext.num++) {
117
51744
            for (ext.den=1; ext.den <= 32; ext.den++) {
118
50176
                AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
119
120

50176
                if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
121
23944
                    continue;
122
39000
                if (av_gcd(ext.den, ext.num) != 1)
123
12768
                    continue;
124
125
26232
                if (    bestq.num==0
126
26183
                    || av_nearer_q(target, bestq, q) < 0
127

26084
                    || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
128
148
                    bestq               = q;
129
148
                    s->frame_rate_index = i;
130
148
                    s->mpeg2_frame_rate_ext.num = ext.num;
131
148
                    s->mpeg2_frame_rate_ext.den = ext.den;
132
                }
133
            }
134
        }
135
    }
136
137
49
    if (av_cmp_q(target, bestq))
138
        return -1;
139
    else
140
49
        return 0;
141
}
142
143
49
static av_cold int encode_init(AVCodecContext *avctx)
144
{
145
    int ret;
146
49
    MpegEncContext *s = avctx->priv_data;
147
49
    int max_size = avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO ? 16383 : 4095;
148
149

49
    if (avctx->width > max_size || avctx->height > max_size) {
150
        av_log(avctx, AV_LOG_ERROR, "%s does not support resolutions above %dx%d\n",
151
               CONFIG_SMALL ? avctx->codec->name : avctx->codec->long_name,
152
               max_size, max_size);
153
        return AVERROR(EINVAL);
154
    }
155

49
    if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
156
        av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
157
        return AVERROR(EINVAL);
158
    }
159
160
49
    if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
161

49
        if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
162
            av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n"
163
                                        "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
164
            return AVERROR(EINVAL);
165
        }
166
    }
167
168
49
    if (avctx->profile == FF_PROFILE_UNKNOWN) {
169
49
        if (avctx->level != FF_LEVEL_UNKNOWN) {
170
            av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
171
            return AVERROR(EINVAL);
172
        }
173
        /* Main or 4:2:2 */
174
49
        avctx->profile = avctx->pix_fmt == AV_PIX_FMT_YUV420P ? FF_PROFILE_MPEG2_MAIN
175
49
                                                              : FF_PROFILE_MPEG2_422;
176
    }
177
49
    if (avctx->level == FF_LEVEL_UNKNOWN) {
178
49
        if (avctx->profile == FF_PROFILE_MPEG2_422) {   /* 4:2:2 */
179

5
            if (avctx->width <= 720 && avctx->height <= 608)
180
5
                avctx->level = 5;                   /* Main */
181
            else
182
                avctx->level = 2;                   /* High */
183
        } else {
184
44
            if (avctx->profile != FF_PROFILE_MPEG2_HIGH &&
185
44
                avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
186
                av_log(avctx, AV_LOG_ERROR,
187
                       "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
188
                return AVERROR(EINVAL);
189
            }
190

44
            if (avctx->width <= 720 && avctx->height <= 576)
191
43
                avctx->level = 8;                   /* Main */
192
1
            else if (avctx->width <= 1440)
193
1
                avctx->level = 6;                   /* High 1440 */
194
            else
195
                avctx->level = 4;                   /* High */
196
        }
197
    }
198
199
49
    if ((ret = ff_mpv_encode_init(avctx)) < 0)
200
        return ret;
201
202
49
    if (find_frame_rate_index(s) < 0) {
203
        if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
204
            av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n",
205
                   avctx->time_base.den, avctx->time_base.num);
206
            return AVERROR(EINVAL);
207
        } else {
208
            av_log(avctx, AV_LOG_INFO,
209
                   "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n",
210
                   avctx->time_base.den, avctx->time_base.num);
211
        }
212
    }
213
214

49
    s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
215
49
    if (s->drop_frame_timecode)
216
        s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
217

49
    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
218
        av_log(avctx, AV_LOG_ERROR,
219
               "Drop frame time code only allowed with 1001/30000 fps\n");
220
        return AVERROR(EINVAL);
221
    }
222
223
#if FF_API_PRIVATE_OPT
224
FF_DISABLE_DEPRECATION_WARNINGS
225
49
    if (avctx->timecode_frame_start)
226
49
        s->timecode_frame_start = avctx->timecode_frame_start;
227
FF_ENABLE_DEPRECATION_WARNINGS
228
#endif
229
230
49
    if (s->tc_opt_str) {
231
6
        AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
232
6
        int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
233
6
        if (ret < 0)
234
            return ret;
235
6
        s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
236
6
        s->timecode_frame_start = s->tc.start;
237
    } else {
238
43
        s->timecode_frame_start = 0; // default is -1
239
    }
240
241
49
    return 0;
242
}
243
244
295237
static void put_header(MpegEncContext *s, int header)
245
{
246
295237
    align_put_bits(&s->pb);
247
295237
    put_bits(&s->pb, 16, header >> 16);
248
295237
    put_sbits(&s->pb, 16, header);
249
295237
}
250
251
/* put sequence header if needed */
252
2265
static void mpeg1_encode_sequence_header(MpegEncContext *s)
253
{
254
    unsigned int vbv_buffer_size, fps, v;
255
    int i, constraint_parameter_flag;
256
    uint64_t time_code;
257
2265
    int64_t best_aspect_error = INT64_MAX;
258
2265
    AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
259
260

2265
    if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
261
2240
        aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
262
263
2265
    if (s->current_picture.f->key_frame) {
264
383
        AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
265
266
        /* MPEG-1 header repeated every GOP */
267
383
        put_header(s, SEQ_START_CODE);
268
269
383
        put_sbits(&s->pb, 12, s->width  & 0xFFF);
270
383
        put_sbits(&s->pb, 12, s->height & 0xFFF);
271
272
5745
        for (i = 1; i < 15; i++) {
273
5362
            int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
274

5362
            if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
275
1072
                error -= (1LL<<32) / ff_mpeg1_aspect[i];
276
            else
277
4290
                error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
278
279
5362
            error = FFABS(error);
280
281
5362
            if (error - 2 <= best_aspect_error) {
282
386
                best_aspect_error    = error;
283
386
                s->aspect_ratio_info = i;
284
            }
285
        }
286
287
383
        put_bits(&s->pb, 4, s->aspect_ratio_info);
288
383
        put_bits(&s->pb, 4, s->frame_rate_index);
289
290
383
        if (s->avctx->rc_max_rate) {
291
153
            v = (s->avctx->rc_max_rate + 399) / 400;
292

153
            if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
293
                v = 0x3ffff;
294
        } else {
295
230
            v = 0x3FFFF;
296
        }
297
298
383
        if (s->avctx->rc_buffer_size)
299
153
            vbv_buffer_size = s->avctx->rc_buffer_size;
300
        else
301
            /* VBV calculation: Scaled so that a VCD has the proper
302
             * VBV size of 40 kilobytes */
303
230
            vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
304
383
        vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
305
306
383
        put_sbits(&s->pb, 18, v);
307
383
        put_bits(&s->pb, 1, 1);         // marker
308
383
        put_sbits(&s->pb, 10, vbv_buffer_size);
309
310
383
        constraint_parameter_flag =
311
763
            s->width  <= 768                                    &&
312
380
            s->height <= 576                                    &&
313
230
            s->mb_width * s->mb_height                 <= 396   &&
314
221
            s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
315
215
            framerate.num <= framerate.den * 30                 &&
316
215
            s->avctx->me_range                                  &&
317
            s->avctx->me_range < 128                            &&
318
            vbv_buffer_size <= 20                               &&
319
763
            v <= 1856000 / 400                                  &&
320
            s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
321
322
383
        put_bits(&s->pb, 1, constraint_parameter_flag);
323
324
383
        ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
325
383
        ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
326
327
383
        if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
328
            AVFrameSideData *side_data;
329
330
            int width = s->width;
330
330
            int height = s->height;
331
            int use_seq_disp_ext;
332
333
330
            put_header(s, EXT_START_CODE);
334
330
            put_bits(&s->pb, 4, 1);                 // seq ext
335
336
330
            put_bits(&s->pb, 1, s->avctx->profile == FF_PROFILE_MPEG2_422); // escx 1 for 4:2:2 profile
337
338
330
            put_bits(&s->pb, 3, s->avctx->profile); // profile
339
330
            put_bits(&s->pb, 4, s->avctx->level);   // level
340
341
330
            put_bits(&s->pb, 1, s->progressive_sequence);
342
330
            put_bits(&s->pb, 2, s->chroma_format);
343
330
            put_bits(&s->pb, 2, s->width  >> 12);
344
330
            put_bits(&s->pb, 2, s->height >> 12);
345
330
            put_bits(&s->pb, 12, v >> 18);          // bitrate ext
346
330
            put_bits(&s->pb, 1, 1);                 // marker
347
330
            put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
348
330
            put_bits(&s->pb, 1, s->low_delay);
349
330
            put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
350
330
            put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
351
352
330
            side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
353
330
            if (side_data) {
354
                AVPanScan *pan_scan = (AVPanScan *)side_data->data;
355
                if (pan_scan->width && pan_scan->height) {
356
                    width = pan_scan->width >> 4;
357
                    height = pan_scan->height >> 4;
358
                }
359
            }
360
361
990
            use_seq_disp_ext = (width != s->width ||
362
330
                                height != s->height ||
363
330
                                s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
364
330
                                s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
365

987
                                s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED ||
366
327
                                s->video_format != VIDEO_FORMAT_UNSPECIFIED);
367
368

330
            if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
369
3
                put_header(s, EXT_START_CODE);
370
3
                put_bits(&s->pb, 4, 2);                         // sequence display extension
371
3
                put_bits(&s->pb, 3, s->video_format);           // video_format
372
3
                put_bits(&s->pb, 1, 1);                         // colour_description
373
3
                put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
374
3
                put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
375
3
                put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
376
3
                put_bits(&s->pb, 14, width);                    // display_horizontal_size
377
3
                put_bits(&s->pb, 1, 1);                         // marker_bit
378
3
                put_bits(&s->pb, 14, height);                   // display_vertical_size
379
3
                put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
380
            }
381
        }
382
383
383
        put_header(s, GOP_START_CODE);
384
383
        put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
385
        /* time code: we must convert from the real frame rate to a
386
         * fake MPEG frame rate in case of low frame rate */
387
383
        fps       = (framerate.num + framerate.den / 2) / framerate.den;
388
383
        time_code = s->current_picture_ptr->f->coded_picture_number +
389
383
                    s->timecode_frame_start;
390
391
383
        s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
392
393
383
        av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
394
383
        if (s->drop_frame_timecode)
395
9
            time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
396
397
383
        put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
398
383
        put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
399
383
        put_bits(&s->pb, 1, 1);
400
383
        put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
401
383
        put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
402

383
        put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
403
383
        put_bits(&s->pb, 1, 0);                     // broken link
404
    }
405
2265
}
406
407
1570182
static inline void encode_mb_skip_run(MpegEncContext *s, int run)
408
{
409
1639380
    while (run >= 33) {
410
69198
        put_bits(&s->pb, 11, 0x008);
411
69198
        run -= 33;
412
    }
413
1570182
    put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
414
1570182
             ff_mpeg12_mbAddrIncrTable[run][0]);
415
1570182
}
416
417
475856
static av_always_inline void put_qscale(MpegEncContext *s)
418
{
419
475856
    put_bits(&s->pb, 5, s->qscale);
420
475856
}
421
422
290088
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
423
{
424

290088
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
425
        put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
426
        /* slice_vertical_position_extension */
427
        put_bits(&s->pb, 3, s->mb_y >> 7);
428
    } else {
429
290088
        put_header(s, SLICE_MIN_START_CODE + s->mb_y);
430
    }
431
290088
    put_qscale(s);
432
    /* slice extra information */
433
290088
    put_bits(&s->pb, 1, 0);
434
290088
}
435
436
2265
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
437
{
438
    AVFrameSideData *side_data;
439
2265
    mpeg1_encode_sequence_header(s);
440
441
    /* MPEG-1 picture header */
442
2265
    put_header(s, PICTURE_START_CODE);
443
    /* temporal reference */
444
445
    // RAL: s->picture_number instead of s->fake_picture_number
446
2265
    put_bits(&s->pb, 10,
447
2265
             (s->picture_number - s->gop_picture_number) & 0x3ff);
448
2265
    put_bits(&s->pb, 3, s->pict_type);
449
450
2265
    s->vbv_delay_ptr = s->pb.buf + put_bytes_count(&s->pb, 0);
451
2265
    put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
452
453
    // RAL: Forward f_code also needed for B-frames
454
2265
    if (s->pict_type == AV_PICTURE_TYPE_P ||
455
1090
        s->pict_type == AV_PICTURE_TYPE_B) {
456
1882
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
457
1882
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
458
427
            put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
459
        else
460
1455
            put_bits(&s->pb, 3, 7);             /* forward_f_code */
461
    }
462
463
    // RAL: Backward f_code necessary for B-frames
464
2265
    if (s->pict_type == AV_PICTURE_TYPE_B) {
465
707
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
466
707
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
467
144
            put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
468
        else
469
563
            put_bits(&s->pb, 3, 7);             /* backward_f_code */
470
    }
471
472
2265
    put_bits(&s->pb, 1, 0);                     /* extra bit picture */
473
474
2265
    s->frame_pred_frame_dct = 1;
475
2265
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
476
1785
        put_header(s, EXT_START_CODE);
477
1785
        put_bits(&s->pb, 4, 8);                 /* pic ext */
478
1785
        if (s->pict_type == AV_PICTURE_TYPE_P ||
479
893
            s->pict_type == AV_PICTURE_TYPE_B) {
480
1455
            put_bits(&s->pb, 4, s->f_code);
481
1455
            put_bits(&s->pb, 4, s->f_code);
482
        } else {
483
330
            put_bits(&s->pb, 8, 255);
484
        }
485
1785
        if (s->pict_type == AV_PICTURE_TYPE_B) {
486
563
            put_bits(&s->pb, 4, s->b_code);
487
563
            put_bits(&s->pb, 4, s->b_code);
488
        } else {
489
1222
            put_bits(&s->pb, 8, 255);
490
        }
491
1785
        put_bits(&s->pb, 2, s->intra_dc_precision);
492
493
1785
        av_assert0(s->picture_structure == PICT_FRAME);
494
1785
        put_bits(&s->pb, 2, s->picture_structure);
495
1785
        if (s->progressive_sequence)
496
835
            put_bits(&s->pb, 1, 0);             /* no repeat */
497
        else
498
950
            put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
499
        /* XXX: optimize the generation of this flag with entropy measures */
500
1785
        s->frame_pred_frame_dct = s->progressive_sequence;
501
502
1785
        put_bits(&s->pb, 1, s->frame_pred_frame_dct);
503
1785
        put_bits(&s->pb, 1, s->concealment_motion_vectors);
504
1785
        put_bits(&s->pb, 1, s->q_scale_type);
505
1785
        put_bits(&s->pb, 1, s->intra_vlc_format);
506
1785
        put_bits(&s->pb, 1, s->alternate_scan);
507
1785
        put_bits(&s->pb, 1, s->repeat_first_field);
508
1785
        s->progressive_frame = s->progressive_sequence;
509
        /* chroma_420_type */
510
3220
        put_bits(&s->pb, 1, s->chroma_format ==
511
1435
                            CHROMA_420 ? s->progressive_frame : 0);
512
1785
        put_bits(&s->pb, 1, s->progressive_frame);
513
1785
        put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
514
    }
515
2265
    if (s->scan_offset) {
516
        int i;
517
518
        put_header(s, USER_START_CODE);
519
        for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
520
            put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
521
    }
522
2265
    side_data = av_frame_get_side_data(s->current_picture_ptr->f,
523
                                       AV_FRAME_DATA_STEREO3D);
524
2265
    if (side_data) {
525
        AVStereo3D *stereo = (AVStereo3D *)side_data->data;
526
        uint8_t fpa_type;
527
528
        switch (stereo->type) {
529
        case AV_STEREO3D_SIDEBYSIDE:
530
            fpa_type = 0x03;
531
            break;
532
        case AV_STEREO3D_TOPBOTTOM:
533
            fpa_type = 0x04;
534
            break;
535
        case AV_STEREO3D_2D:
536
            fpa_type = 0x08;
537
            break;
538
        case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
539
            fpa_type = 0x23;
540
            break;
541
        default:
542
            fpa_type = 0;
543
            break;
544
        }
545
546
        if (fpa_type != 0) {
547
            put_header(s, USER_START_CODE);
548
            put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
549
            put_bits(&s->pb, 8, 'P');
550
            put_bits(&s->pb, 8, '3');
551
            put_bits(&s->pb, 8, 'D');
552
            put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
553
554
            put_bits(&s->pb, 1, 1);     // reserved_bit
555
            put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
556
            put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
557
            put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
558
        }
559
    }
560
561

2265
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->a53_cc) {
562
1785
        side_data = av_frame_get_side_data(s->current_picture_ptr->f,
563
            AV_FRAME_DATA_A53_CC);
564
1785
        if (side_data) {
565
            if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) {
566
                int i = 0;
567
568
                put_header (s, USER_START_CODE);
569
570
                put_bits(&s->pb, 8, 'G');                   // user_identifier
571
                put_bits(&s->pb, 8, 'A');
572
                put_bits(&s->pb, 8, '9');
573
                put_bits(&s->pb, 8, '4');
574
                put_bits(&s->pb, 8, 3);                     // user_data_type_code
575
                put_bits(&s->pb, 8,
576
                    (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
577
                put_bits(&s->pb, 8, 0xff);                  // em_data
578
579
                for (i = 0; i < side_data->size; i++)
580
                    put_bits(&s->pb, 8, side_data->data[i]);
581
582
                put_bits(&s->pb, 8, 0xff);                  // marker_bits
583
            } else {
584
                av_log(s->avctx, AV_LOG_WARNING,
585
                    "Warning Closed Caption size (%d) can not exceed 93 bytes "
586
                    "and must be a multiple of 3\n", side_data->size);
587
            }
588
        }
589
    }
590
591
2265
    s->mb_y = 0;
592
2265
    ff_mpeg1_encode_slice_header(s);
593
2265
}
594
595
1309340
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
596
                                int has_mv, int field_motion)
597
{
598
1309340
    put_bits(&s->pb, n, bits);
599
1309340
    if (!s->frame_pred_frame_dct) {
600
702603
        if (has_mv)
601
            /* motion_type: frame/field */
602
365122
            put_bits(&s->pb, 2, 2 - field_motion);
603
702603
        put_bits(&s->pb, 1, s->interlaced_dct);
604
    }
605
1309340
}
606
607
// RAL: Parameter added: f_or_b_code
608
2967158
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
609
{
610
2967158
    if (val == 0) {
611
        /* zero vector */
612
1173275
        put_bits(&s->pb,
613
1173275
                 ff_mpeg12_mbMotionVectorTable[0][1],
614
1173275
                 ff_mpeg12_mbMotionVectorTable[0][0]);
615
    } else {
616
        int code, sign, bits;
617
1793883
        int bit_size = f_or_b_code - 1;
618
1793883
        int range    = 1 << bit_size;
619
        /* modulo encoding */
620
1793883
        val = sign_extend(val, 5 + bit_size);
621
622
1793883
        if (val >= 0) {
623
874554
            val--;
624
874554
            code = (val >> bit_size) + 1;
625
874554
            bits = val & (range - 1);
626
874554
            sign = 0;
627
        } else {
628
919329
            val = -val;
629
919329
            val--;
630
919329
            code = (val >> bit_size) + 1;
631
919329
            bits = val & (range - 1);
632
919329
            sign = 1;
633
        }
634
635
        av_assert2(code > 0 && code <= 16);
636
637
1793883
        put_bits(&s->pb,
638
1793883
                 ff_mpeg12_mbMotionVectorTable[code][1],
639
1793883
                 ff_mpeg12_mbMotionVectorTable[code][0]);
640
641
1793883
        put_bits(&s->pb, 1, sign);
642
1793883
        if (bit_size > 0)
643
1248476
            put_bits(&s->pb, bit_size, bits);
644
    }
645
2967158
}
646
647
3228530
static inline void encode_dc(MpegEncContext *s, int diff, int component)
648
{
649
3228530
    unsigned int diff_u = diff + 255;
650
3228530
    if (diff_u >= 511) {
651
        int index;
652
653
162210
        if (diff < 0) {
654
113286
            index = av_log2_16bit(-2 * diff);
655
113286
            diff--;
656
        } else {
657
48924
            index = av_log2_16bit(2 * diff);
658
        }
659
162210
        if (component == 0)
660
91380
            put_bits(&s->pb,
661
91380
                     ff_mpeg12_vlc_dc_lum_bits[index] + index,
662
91380
                     (ff_mpeg12_vlc_dc_lum_code[index] << index) +
663
91380
                     av_mod_uintp2(diff, index));
664
        else
665
70830
            put_bits(&s->pb,
666
70830
                     ff_mpeg12_vlc_dc_chroma_bits[index] + index,
667
70830
                     (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
668
70830
                     av_mod_uintp2(diff, index));
669
    } else {
670
3066320
        if (component == 0)
671
1666960
            put_bits(&s->pb,
672
1666960
                     mpeg1_lum_dc_uni[diff + 255] & 0xFF,
673
1666960
                     mpeg1_lum_dc_uni[diff + 255] >> 8);
674
        else
675
1399360
            put_bits(&s->pb,
676
1399360
                     mpeg1_chr_dc_uni[diff + 255] & 0xFF,
677
1399360
                     mpeg1_chr_dc_uni[diff + 255] >> 8);
678
    }
679
3228530
}
680
681
6457398
static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
682
{
683
    int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
684
    int code, component;
685
6457398
    const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
686
687
6457398
    last_index = s->block_last_index[n];
688
689
    /* DC coef */
690
6457398
    if (s->mb_intra) {
691
3228530
        component = (n <= 3 ? 0 : (n & 1) + 1);
692
3228530
        dc        = block[0];                   /* overflow is impossible */
693
3228530
        diff      = dc - s->last_dc[component];
694
3228530
        encode_dc(s, diff, component);
695
3228530
        s->last_dc[component] = dc;
696
3228530
        i = 1;
697
3228530
        if (s->intra_vlc_format)
698
2643692
            table_vlc = ff_rl_mpeg2.table_vlc;
699
    } else {
700
        /* encode the first coefficient: needs to be done here because
701
         * it is handled slightly differently */
702
3228868
        level = block[0];
703
3228868
        if (abs(level) == 1) {
704
945317
            code = ((uint32_t)level >> 31);     /* the sign bit */
705
945317
            put_bits(&s->pb, 2, code | 0x02);
706
945317
            i = 1;
707
        } else {
708
2283551
            i             = 0;
709
2283551
            last_non_zero = -1;
710
2283551
            goto next_coef;
711
        }
712
    }
713
714
    /* now quantify & encode AC coefs */
715
4173847
    last_non_zero = i - 1;
716
717
163126470
    for (; i <= last_index; i++) {
718
156669072
        j     = s->intra_scantable.permutated[i];
719
156669072
        level = block[j];
720
721
158952623
next_coef:
722
        /* encode using VLC */
723
158952623
        if (level != 0) {
724
65535795
            run = i - last_non_zero - 1;
725
726
65535795
            alevel = level;
727
65535795
            MASK_ABS(sign, alevel);
728
65535795
            sign &= 1;
729
730
65535795
            if (alevel <= ff_rl_mpeg1.max_level[0][run]) {
731
63455458
                code = ff_rl_mpeg1.index_run[0][run] + alevel - 1;
732
                /* store the VLC & sign at once */
733
63455458
                put_bits(&s->pb, table_vlc[code][1] + 1,
734
63455458
                         (table_vlc[code][0] << 1) + sign);
735
            } else {
736
                /* escape seems to be pretty rare <5% so I do not optimize it */
737
2080337
                put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
738
                /* escape: only clip in this case */
739
2080337
                put_bits(&s->pb, 6, run);
740
2080337
                if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
741
82631
                    if (alevel < 128) {
742
82631
                        put_sbits(&s->pb, 8, level);
743
                    } else {
744
                        if (level < 0)
745
                            put_bits(&s->pb, 16, 0x8001 + level + 255);
746
                        else
747
                            put_sbits(&s->pb, 16, level);
748
                    }
749
                } else {
750
1997706
                    put_sbits(&s->pb, 12, level);
751
                }
752
            }
753
65535795
            last_non_zero = i;
754
        }
755
    }
756
    /* end of block */
757
6457398
    put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
758
6457398
}
759
760
1657917
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
761
                                                      int16_t block[8][64],
762
                                                      int motion_x, int motion_y,
763
                                                      int mb_block_count)
764
{
765
    int i, cbp;
766
1657917
    const int mb_x     = s->mb_x;
767
1657917
    const int mb_y     = s->mb_y;
768

1657917
    const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
769
770
    /* compute cbp */
771
1657917
    cbp = 0;
772
12891649
    for (i = 0; i < mb_block_count; i++)
773
11233732
        if (s->block_last_index[i] >= 0)
774
6457398
            cbp |= 1 << (mb_block_count - 1 - i);
775
776

1657917
    if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
777
320336
        (mb_x != s->mb_width - 1 ||
778

8338
         (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
779

312540
        ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
780

228684
         (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
781
21548
          (((s->mv_dir & MV_DIR_FORWARD)
782
20583
            ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
783

43096
               (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
784
21548
           ((s->mv_dir & MV_DIR_BACKWARD)
785
20991
            ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
786
21548
               (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
787
87735
        s->mb_skip_run++;
788
87735
        s->qscale -= s->dquant;
789
87735
        s->skip_count++;
790
87735
        s->misc_bits++;
791
87735
        s->last_bits++;
792
87735
        if (s->pict_type == AV_PICTURE_TYPE_P) {
793
83856
            s->last_mv[0][0][0] =
794
83856
            s->last_mv[0][0][1] =
795
83856
            s->last_mv[0][1][0] =
796
83856
            s->last_mv[0][1][1] = 0;
797
        }
798
    } else {
799
1570182
        if (first_mb) {
800
317179
            av_assert0(s->mb_skip_run == 0);
801
317179
            encode_mb_skip_run(s, s->mb_x);
802
        } else {
803
1253003
            encode_mb_skip_run(s, s->mb_skip_run);
804
        }
805
806
1570182
        if (s->pict_type == AV_PICTURE_TYPE_I) {
807

388614
            if (s->dquant && cbp) {
808
                /* macroblock_type: macroblock_quant = 1 */
809
43950
                put_mb_modes(s, 2, 1, 0, 0);
810
43950
                put_qscale(s);
811
            } else {
812
                /* macroblock_type: macroblock_quant = 0 */
813
344664
                put_mb_modes(s, 1, 1, 0, 0);
814
344664
                s->qscale -= s->dquant;
815
            }
816
388614
            s->misc_bits += get_bits_diff(s);
817
388614
            s->i_count++;
818
1181568
        } else if (s->mb_intra) {
819

50971
            if (s->dquant && cbp) {
820
11248
                put_mb_modes(s, 6, 0x01, 0, 0);
821
11248
                put_qscale(s);
822
            } else {
823
39723
                put_mb_modes(s, 5, 0x03, 0, 0);
824
39723
                s->qscale -= s->dquant;
825
            }
826
50971
            s->misc_bits += get_bits_diff(s);
827
50971
            s->i_count++;
828
50971
            memset(s->last_mv, 0, sizeof(s->last_mv));
829
1130597
        } else if (s->pict_type == AV_PICTURE_TYPE_P) {
830
549253
            if (s->mv_type == MV_TYPE_16X16) {
831
526300
                if (cbp != 0) {
832
459195
                    if ((motion_x | motion_y) == 0) {
833
47018
                        if (s->dquant) {
834
                            /* macroblock_pattern & quant */
835
4208
                            put_mb_modes(s, 5, 1, 0, 0);
836
4208
                            put_qscale(s);
837
                        } else {
838
                            /* macroblock_pattern only */
839
42810
                            put_mb_modes(s, 2, 1, 0, 0);
840
                        }
841
47018
                        s->misc_bits += get_bits_diff(s);
842
                    } else {
843
412177
                        if (s->dquant) {
844
70756
                            put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
845
70756
                            put_qscale(s);
846
                        } else {
847
341421
                            put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
848
                        }
849
412177
                        s->misc_bits += get_bits_diff(s);
850
                        // RAL: f_code parameter added
851
412177
                        mpeg1_encode_motion(s,
852
412177
                                            motion_x - s->last_mv[0][0][0],
853
                                            s->f_code);
854
                        // RAL: f_code parameter added
855
412177
                        mpeg1_encode_motion(s,
856
412177
                                            motion_y - s->last_mv[0][0][1],
857
                                            s->f_code);
858
412177
                        s->mv_bits += get_bits_diff(s);
859
                    }
860
                } else {
861
67105
                    put_bits(&s->pb, 3, 1);         /* motion only */
862
67105
                    if (!s->frame_pred_frame_dct)
863
16441
                        put_bits(&s->pb, 2, 2);     /* motion_type: frame */
864
67105
                    s->misc_bits += get_bits_diff(s);
865
                    // RAL: f_code parameter added
866
67105
                    mpeg1_encode_motion(s,
867
67105
                                        motion_x - s->last_mv[0][0][0],
868
                                        s->f_code);
869
                    // RAL: f_code parameter added
870
67105
                    mpeg1_encode_motion(s,
871
67105
                                        motion_y - s->last_mv[0][0][1],
872
                                        s->f_code);
873
67105
                    s->qscale  -= s->dquant;
874
67105
                    s->mv_bits += get_bits_diff(s);
875
                }
876
526300
                s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
877
526300
                s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
878
            } else {
879
                av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
880
881
22953
                if (cbp) {
882
21459
                    if (s->dquant) {
883
                        put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
884
                        put_qscale(s);
885
                    } else {
886
21459
                        put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
887
                    }
888
                } else {
889
1494
                    put_bits(&s->pb, 3, 1);             /* motion only */
890
1494
                    put_bits(&s->pb, 2, 1);             /* motion_type: field */
891
1494
                    s->qscale -= s->dquant;
892
                }
893
22953
                s->misc_bits += get_bits_diff(s);
894
68859
                for (i = 0; i < 2; i++) {
895
45906
                    put_bits(&s->pb, 1, s->field_select[0][i]);
896
45906
                    mpeg1_encode_motion(s,
897
45906
                                        s->mv[0][i][0] - s->last_mv[0][i][0],
898
                                        s->f_code);
899
45906
                    mpeg1_encode_motion(s,
900
45906
                                        s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
901
                                        s->f_code);
902
45906
                    s->last_mv[0][i][0] = s->mv[0][i][0];
903
45906
                    s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
904
                }
905
22953
                s->mv_bits += get_bits_diff(s);
906
            }
907
549253
            if (cbp) {
908
480654
                if (s->chroma_y_shift) {
909
404731
                    put_bits(&s->pb,
910
404731
                             ff_mpeg12_mbPatTable[cbp][1],
911
404731
                             ff_mpeg12_mbPatTable[cbp][0]);
912
                } else {
913
75923
                    put_bits(&s->pb,
914
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
915
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
916
75923
                    put_sbits(&s->pb, 2, cbp);
917
                }
918
            }
919
549253
            s->f_count++;
920
        } else {
921
581344
            if (s->mv_type == MV_TYPE_16X16) {
922
486295
                if (cbp) {                      // With coded bloc pattern
923
314569
                    if (s->dquant) {
924
55606
                        if (s->mv_dir == MV_DIR_FORWARD)
925
12773
                            put_mb_modes(s, 6, 3, 1, 0);
926
                        else
927
42833
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
928
55606
                        put_qscale(s);
929
                    } else {
930
258963
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
931
                    }
932
                } else {                        // No coded bloc pattern
933
171726
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
934
171726
                    if (!s->frame_pred_frame_dct)
935
78149
                        put_bits(&s->pb, 2, 2); /* motion_type: frame */
936
171726
                    s->qscale -= s->dquant;
937
                }
938
486295
                s->misc_bits += get_bits_diff(s);
939
486295
                if (s->mv_dir & MV_DIR_FORWARD) {
940
347991
                    mpeg1_encode_motion(s,
941
347991
                                        s->mv[0][0][0] - s->last_mv[0][0][0],
942
                                        s->f_code);
943
347991
                    mpeg1_encode_motion(s,
944
347991
                                        s->mv[0][0][1] - s->last_mv[0][0][1],
945
                                        s->f_code);
946
347991
                    s->last_mv[0][0][0] =
947
347991
                    s->last_mv[0][1][0] = s->mv[0][0][0];
948
347991
                    s->last_mv[0][0][1] =
949
347991
                    s->last_mv[0][1][1] = s->mv[0][0][1];
950
347991
                    s->f_count++;
951
                }
952
486295
                if (s->mv_dir & MV_DIR_BACKWARD) {
953
366304
                    mpeg1_encode_motion(s,
954
366304
                                        s->mv[1][0][0] - s->last_mv[1][0][0],
955
                                        s->b_code);
956
366304
                    mpeg1_encode_motion(s,
957
366304
                                        s->mv[1][0][1] - s->last_mv[1][0][1],
958
                                        s->b_code);
959
366304
                    s->last_mv[1][0][0] =
960
366304
                    s->last_mv[1][1][0] = s->mv[1][0][0];
961
366304
                    s->last_mv[1][0][1] =
962
366304
                    s->last_mv[1][1][1] = s->mv[1][0][1];
963
366304
                    s->b_count++;
964
                }
965
            } else {
966
                av_assert2(s->mv_type == MV_TYPE_FIELD);
967
                av_assert2(!s->frame_pred_frame_dct);
968
95049
                if (cbp) {                      // With coded bloc pattern
969
74532
                    if (s->dquant) {
970
                        if (s->mv_dir == MV_DIR_FORWARD)
971
                            put_mb_modes(s, 6, 3, 1, 1);
972
                        else
973
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
974
                        put_qscale(s);
975
                    } else {
976
74532
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
977
                    }
978
                } else {                        // No coded bloc pattern
979
20517
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
980
20517
                    put_bits(&s->pb, 2, 1);     /* motion_type: field */
981
20517
                    s->qscale -= s->dquant;
982
                }
983
95049
                s->misc_bits += get_bits_diff(s);
984
95049
                if (s->mv_dir & MV_DIR_FORWARD) {
985
182619
                    for (i = 0; i < 2; i++) {
986
121746
                        put_bits(&s->pb, 1, s->field_select[0][i]);
987
121746
                        mpeg1_encode_motion(s,
988
121746
                                            s->mv[0][i][0] - s->last_mv[0][i][0],
989
                                            s->f_code);
990
121746
                        mpeg1_encode_motion(s,
991
121746
                                            s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
992
                                            s->f_code);
993
121746
                        s->last_mv[0][i][0] = s->mv[0][i][0];
994
121746
                        s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
995
                    }
996
60873
                    s->f_count++;
997
                }
998
95049
                if (s->mv_dir & MV_DIR_BACKWARD) {
999
183525
                    for (i = 0; i < 2; i++) {
1000
122350
                        put_bits(&s->pb, 1, s->field_select[1][i]);
1001
122350
                        mpeg1_encode_motion(s,
1002
122350
                                            s->mv[1][i][0] - s->last_mv[1][i][0],
1003
                                            s->b_code);
1004
122350
                        mpeg1_encode_motion(s,
1005
122350
                                            s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
1006
                                            s->b_code);
1007
122350
                        s->last_mv[1][i][0] = s->mv[1][i][0];
1008
122350
                        s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
1009
                    }
1010
61175
                    s->b_count++;
1011
                }
1012
            }
1013
581344
            s->mv_bits += get_bits_diff(s);
1014
581344
            if (cbp) {
1015
389101
                if (s->chroma_y_shift) {
1016
206508
                    put_bits(&s->pb,
1017
206508
                             ff_mpeg12_mbPatTable[cbp][1],
1018
206508
                             ff_mpeg12_mbPatTable[cbp][0]);
1019
                } else {
1020
182593
                    put_bits(&s->pb,
1021
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
1022
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
1023
182593
                    put_sbits(&s->pb, 2, cbp);
1024
                }
1025
            }
1026
        }
1027
12276278
        for (i = 0; i < mb_block_count; i++)
1028
10706096
            if (cbp & (1 << (mb_block_count - 1 - i)))
1029
6457398
                mpeg1_encode_block(s, block[i], i);
1030
1570182
        s->mb_skip_run = 0;
1031
1570182
        if (s->mb_intra)
1032
439585
            s->i_tex_bits += get_bits_diff(s);
1033
        else
1034
1130597
            s->p_tex_bits += get_bits_diff(s);
1035
    }
1036
1657917
}
1037
1038
1657917
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
1039
                        int motion_x, int motion_y)
1040
{
1041
1657917
    if (s->chroma_format == CHROMA_420)
1042
1014802
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
1043
    else
1044
643115
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
1045
1657917
}
1046
1047
49
static av_cold void mpeg12_encode_init_static(void)
1048
{
1049
    static uint8_t mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
1050
1051
49
    ff_rl_init(&ff_rl_mpeg1, mpeg12_static_rl_table_store[0]);
1052
49
    ff_rl_init(&ff_rl_mpeg2, mpeg12_static_rl_table_store[1]);
1053
1054
49
    ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1055
49
    ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1056
1057
    /* build unified dc encoding tables */
1058
25088
    for (int i = -255; i < 256; i++) {
1059
        int adiff, index;
1060
        int bits, code;
1061
25039
        int diff = i;
1062
1063
25039
        adiff = FFABS(diff);
1064
25039
        if (diff < 0)
1065
12495
            diff--;
1066
25039
        index = av_log2(2 * adiff);
1067
1068
25039
        bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1069
25039
        code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1070
25039
               av_mod_uintp2(diff, index);
1071
25039
        mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1072
1073
25039
        bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1074
25039
        code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1075
25039
               av_mod_uintp2(diff, index);
1076
25039
        mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1077
    }
1078
1079
392
    for (int f_code = 1; f_code <= MAX_FCODE; f_code++)
1080
5620398
        for (int mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1081
            int len;
1082
1083
5620055
            if (mv == 0) {
1084
343
                len = ff_mpeg12_mbMotionVectorTable[0][1];
1085
            } else {
1086
                int val, bit_size, code;
1087
1088
5619712
                bit_size = f_code - 1;
1089
1090
5619712
                val = mv;
1091
5619712
                if (val < 0)
1092
2809856
                    val = -val;
1093
5619712
                val--;
1094
5619712
                code = (val >> bit_size) + 1;
1095
5619712
                if (code < 17)
1096
199136
                    len = ff_mpeg12_mbMotionVectorTable[code][1] +
1097
                          1 + bit_size;
1098
                else
1099
5420576
                    len = ff_mpeg12_mbMotionVectorTable[16][1] +
1100
                          2 + bit_size;
1101
            }
1102
1103
5620055
            mv_penalty[f_code][mv + MAX_DMV] = len;
1104
        }
1105
1106
1107
392
    for (int f_code = MAX_FCODE; f_code > 0; f_code--)
1108
199479
        for (int mv = -(8 << f_code); mv < (8 << f_code); mv++)
1109
199136
            fcode_tab[mv + MAX_MV] = f_code;
1110
49
}
1111
1112
49
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
1113
{
1114
    static AVOnce init_static_once = AV_ONCE_INIT;
1115
1116
49
    ff_mpeg12_common_init(s);
1117
1118
49
    s->me.mv_penalty = mv_penalty;
1119
49
    s->fcode_tab     = fcode_tab;
1120
49
    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1121
11
        s->min_qcoeff = -255;
1122
11
        s->max_qcoeff = 255;
1123
    } else {
1124
38
        s->min_qcoeff = -2047;
1125
38
        s->max_qcoeff = 2047;
1126
    }
1127
49
    if (s->intra_vlc_format) {
1128
13
        s->intra_ac_vlc_length      =
1129
13
        s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1130
    } else {
1131
36
        s->intra_ac_vlc_length      =
1132
36
        s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1133
    }
1134
49
    s->inter_ac_vlc_length      =
1135
49
    s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1136
1137
49
    ff_thread_once(&init_static_once, mpeg12_encode_init_static);
1138
49
}
1139
1140
#define OFFSET(x) offsetof(MpegEncContext, x)
1141
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1142
#define COMMON_OPTS                                                           \
1143
    { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.",   \
1144
      OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE },\
1145
    { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1146
      OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1147
    { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1148
      OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1149
    { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \
1150
      OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \
1151
    FF_MPV_COMMON_BFRAME_OPTS
1152
1153
static const AVOption mpeg1_options[] = {
1154
    COMMON_OPTS
1155
    FF_MPV_COMMON_OPTS
1156
#if FF_API_MPEGVIDEO_OPTS
1157
    FF_MPV_DEPRECATED_MPEG_QUANT_OPT
1158
    FF_MPV_DEPRECATED_A53_CC_OPT
1159
    FF_MPV_DEPRECATED_MATRIX_OPT
1160
#endif
1161
    { NULL },
1162
};
1163
1164
static const AVOption mpeg2_options[] = {
1165
    COMMON_OPTS
1166
    { "intra_vlc",        "Use MPEG-2 intra VLC table.",
1167
      OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1168
    { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1169
    { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1170
    { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc),         AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE },
1171
    { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1172
    {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1173
    {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1174
    {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1175
    { "video_format",     "Video_format in the sequence_display_extension indicating the source of the video.", OFFSET(video_format), AV_OPT_TYPE_INT, { .i64 = VIDEO_FORMAT_UNSPECIFIED }, 0, 7, VE, "video_format" },
1176
    {     "component",    NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_COMPONENT  },  0, 0, VE, "video_format" },
1177
    {     "pal",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_PAL        },  0, 0, VE, "video_format" },
1178
    {     "ntsc",         NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_NTSC       },  0, 0, VE, "video_format" },
1179
    {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
1180
    {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
1181
    {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
1182
#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "avctx.level"
1183
    { LEVEL("high",     4) },
1184
    { LEVEL("high1440", 6) },
1185
    { LEVEL("main",     8) },
1186
    { LEVEL("low",     10) },
1187
#undef LEVEL
1188
    FF_MPV_COMMON_OPTS
1189
#if FF_API_MPEGVIDEO_OPTS
1190
    { "mpeg_quant",       "Deprecated, does nothing", OFFSET(mpeg_quant),
1191
      AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 1, VE | AV_OPT_FLAG_DEPRECATED },
1192
    FF_MPV_DEPRECATED_MATRIX_OPT
1193
#endif
1194
    FF_MPEG2_PROFILE_OPTS
1195
    { NULL },
1196
};
1197
1198
#define mpeg12_class(x)                                 \
1199
static const AVClass mpeg ## x ## _class = {            \
1200
    .class_name = "mpeg" # x "video encoder",           \
1201
    .item_name  = av_default_item_name,                 \
1202
    .option     = mpeg ## x ## _options,                \
1203
    .version    = LIBAVUTIL_VERSION_INT,                \
1204
};
1205
1206
mpeg12_class(1)
1207
mpeg12_class(2)
1208
1209
AVCodec ff_mpeg1video_encoder = {
1210
    .name                 = "mpeg1video",
1211
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1212
    .type                 = AVMEDIA_TYPE_VIDEO,
1213
    .id                   = AV_CODEC_ID_MPEG1VIDEO,
1214
    .priv_data_size       = sizeof(MpegEncContext),
1215
    .init                 = encode_init,
1216
    .encode2              = ff_mpv_encode_picture,
1217
    .close                = ff_mpv_encode_end,
1218
    .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1219
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1220
                                                           AV_PIX_FMT_NONE },
1221
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1222
    .caps_internal        = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1223
    .priv_class           = &mpeg1_class,
1224
};
1225
1226
AVCodec ff_mpeg2video_encoder = {
1227
    .name                 = "mpeg2video",
1228
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1229
    .type                 = AVMEDIA_TYPE_VIDEO,
1230
    .id                   = AV_CODEC_ID_MPEG2VIDEO,
1231
    .priv_data_size       = sizeof(MpegEncContext),
1232
    .init                 = encode_init,
1233
    .encode2              = ff_mpv_encode_picture,
1234
    .close                = ff_mpv_encode_end,
1235
    .supported_framerates = ff_mpeg2_frame_rate_tab,
1236
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1237
                                                           AV_PIX_FMT_YUV422P,
1238
                                                           AV_PIX_FMT_NONE },
1239
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1240
    .caps_internal        = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1241
    .priv_class           = &mpeg2_class,
1242
};
1243
#endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */