GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/mpeg12enc.c Lines: 584 683 85.5 %
Date: 2021-01-21 21:11:50 Branches: 311 409 76.0 %

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
static uint8_t mpeg1_index_run[2][64];
66
static int8_t  mpeg1_max_level[2][64];
67
68
#define A53_MAX_CC_COUNT 0x1f
69
#endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */
70
71
96
av_cold void ff_mpeg1_init_uni_ac_vlc(const RLTable *rl, uint8_t *uni_ac_vlc_len)
72
{
73
    int i;
74
75
12384
    for (i = 0; i < 128; i++) {
76
12288
        int level = i - 64;
77
        int run;
78
12288
        if (!level)
79
96
            continue;
80
792480
        for (run = 0; run < 64; run++) {
81
            int len, code;
82
780288
            int alevel = FFABS(level);
83
84
780288
            if (alevel > rl->max_level[0][run])
85
758976
                code = 111;                         /* rl->n */
86
            else
87
21312
                code = rl->index_run[0][run] + alevel - 1;
88
89
780288
            if (code < 111) {                       /* rl->n */
90
                /* length of VLC and sign */
91
21312
                len = rl->table_vlc[code][1] + 1;
92
            } else {
93
758976
                len = rl->table_vlc[111 /* rl->n */][1] + 6;
94
95
758976
                if (alevel < 128)
96
758976
                    len += 8;
97
                else
98
                    len += 16;
99
            }
100
101
780288
            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
102
        }
103
    }
104
96
}
105
106
#if CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER
107
48
static int find_frame_rate_index(MpegEncContext *s)
108
{
109
    int i;
110
48
    AVRational bestq = (AVRational) {0, 0};
111
    AVRational ext;
112
48
    AVRational target = av_inv_q(s->avctx->time_base);
113
114
432
    for (i = 1; i < 14; i++) {
115

432
        if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
116
            i >= 9)
117
48
            break;
118
119
1920
        for (ext.num=1; ext.num <= 4; ext.num++) {
120
50688
            for (ext.den=1; ext.den <= 32; ext.den++) {
121
49152
                AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
122
123

49152
                if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
124
23608
                    continue;
125
37976
                if (av_gcd(ext.den, ext.num) != 1)
126
12432
                    continue;
127
128
25544
                if (    bestq.num==0
129
25496
                    || av_nearer_q(target, bestq, q) < 0
130

25399
                    || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
131
145
                    bestq               = q;
132
145
                    s->frame_rate_index = i;
133
145
                    s->mpeg2_frame_rate_ext.num = ext.num;
134
145
                    s->mpeg2_frame_rate_ext.den = ext.den;
135
                }
136
            }
137
        }
138
    }
139
140
48
    if (av_cmp_q(target, bestq))
141
        return -1;
142
    else
143
48
        return 0;
144
}
145
146
48
static av_cold int encode_init(AVCodecContext *avctx)
147
{
148
    int ret;
149
48
    MpegEncContext *s = avctx->priv_data;
150
151
48
    if ((ret = ff_mpv_encode_init(avctx)) < 0)
152
        return ret;
153
154
48
    if (find_frame_rate_index(s) < 0) {
155
        if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
156
            av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n",
157
                   avctx->time_base.den, avctx->time_base.num);
158
            return AVERROR(EINVAL);
159
        } else {
160
            av_log(avctx, AV_LOG_INFO,
161
                   "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n",
162
                   avctx->time_base.den, avctx->time_base.num);
163
        }
164
    }
165
166
48
    if (avctx->profile == FF_PROFILE_UNKNOWN) {
167
48
        if (avctx->level != FF_LEVEL_UNKNOWN) {
168
            av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
169
            return AVERROR(EINVAL);
170
        }
171
        /* Main or 4:2:2 */
172
48
        avctx->profile = s->chroma_format == CHROMA_420 ? FF_PROFILE_MPEG2_MAIN : FF_PROFILE_MPEG2_422;
173
    }
174
175
48
    if (avctx->level == FF_LEVEL_UNKNOWN) {
176
48
        if (avctx->profile == FF_PROFILE_MPEG2_422) {   /* 4:2:2 */
177

5
            if (avctx->width <= 720 && avctx->height <= 608)
178
5
                avctx->level = 5;                   /* Main */
179
            else
180
                avctx->level = 2;                   /* High */
181
        } else {
182

43
            if (avctx->profile != FF_PROFILE_MPEG2_HIGH && s->chroma_format != CHROMA_420) {
183
                av_log(avctx, AV_LOG_ERROR,
184
                       "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
185
                return AVERROR(EINVAL);
186
            }
187

43
            if (avctx->width <= 720 && avctx->height <= 576)
188
43
                avctx->level = 8;                   /* Main */
189
            else if (avctx->width <= 1440)
190
                avctx->level = 6;                   /* High 1440 */
191
            else
192
                avctx->level = 4;                   /* High */
193
        }
194
    }
195
196

48
    if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
197
        av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
198
        return AVERROR(EINVAL);
199
    }
200
201
48
    if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
202

48
        if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
203
            av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n"
204
                                        "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
205
            return AVERROR(EINVAL);
206
        }
207
    }
208
209

48
    s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
210
48
    if (s->drop_frame_timecode)
211
        s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
212

48
    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
213
        av_log(avctx, AV_LOG_ERROR,
214
               "Drop frame time code only allowed with 1001/30000 fps\n");
215
        return AVERROR(EINVAL);
216
    }
217
218
#if FF_API_PRIVATE_OPT
219
FF_DISABLE_DEPRECATION_WARNINGS
220
48
    if (avctx->timecode_frame_start)
221
48
        s->timecode_frame_start = avctx->timecode_frame_start;
222
FF_ENABLE_DEPRECATION_WARNINGS
223
#endif
224
225
48
    if (s->tc_opt_str) {
226
6
        AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
227
6
        int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
228
6
        if (ret < 0)
229
            return ret;
230
6
        s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
231
6
        s->timecode_frame_start = s->tc.start;
232
    } else {
233
42
        s->timecode_frame_start = 0; // default is -1
234
    }
235
236
48
    return 0;
237
}
238
239
294050
static void put_header(MpegEncContext *s, int header)
240
{
241
294050
    align_put_bits(&s->pb);
242
294050
    put_bits(&s->pb, 16, header >> 16);
243
294050
    put_sbits(&s->pb, 16, header);
244
294050
}
245
246
/* put sequence header if needed */
247
2240
static void mpeg1_encode_sequence_header(MpegEncContext *s)
248
{
249
    unsigned int vbv_buffer_size, fps, v;
250
    int i, constraint_parameter_flag;
251
    uint64_t time_code;
252
2240
    int64_t best_aspect_error = INT64_MAX;
253
2240
    AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
254
255

2240
    if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
256
2240
        aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
257
258
2240
    if (s->current_picture.f->key_frame) {
259
380
        AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
260
261
        /* MPEG-1 header repeated every GOP */
262
380
        put_header(s, SEQ_START_CODE);
263
264
380
        put_sbits(&s->pb, 12, s->width  & 0xFFF);
265
380
        put_sbits(&s->pb, 12, s->height & 0xFFF);
266
267
5700
        for (i = 1; i < 15; i++) {
268
5320
            int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
269

5320
            if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
270
1069
                error -= (1LL<<32) / ff_mpeg1_aspect[i];
271
            else
272
4251
                error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
273
274
5320
            error = FFABS(error);
275
276
5320
            if (error - 2 <= best_aspect_error) {
277
380
                best_aspect_error    = error;
278
380
                s->aspect_ratio_info = i;
279
            }
280
        }
281
282
380
        put_bits(&s->pb, 4, s->aspect_ratio_info);
283
380
        put_bits(&s->pb, 4, s->frame_rate_index);
284
285
380
        if (s->avctx->rc_max_rate) {
286
150
            v = (s->avctx->rc_max_rate + 399) / 400;
287

150
            if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
288
                v = 0x3ffff;
289
        } else {
290
230
            v = 0x3FFFF;
291
        }
292
293
380
        if (s->avctx->rc_buffer_size)
294
150
            vbv_buffer_size = s->avctx->rc_buffer_size;
295
        else
296
            /* VBV calculation: Scaled so that a VCD has the proper
297
             * VBV size of 40 kilobytes */
298
230
            vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
299
380
        vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
300
301
380
        put_sbits(&s->pb, 18, v);
302
380
        put_bits(&s->pb, 1, 1);         // marker
303
380
        put_sbits(&s->pb, 10, vbv_buffer_size);
304
305
380
        constraint_parameter_flag =
306
760
            s->width  <= 768                                    &&
307
380
            s->height <= 576                                    &&
308
230
            s->mb_width * s->mb_height                 <= 396   &&
309
221
            s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
310
215
            framerate.num <= framerate.den * 30                 &&
311
215
            s->avctx->me_range                                  &&
312
            s->avctx->me_range < 128                            &&
313
            vbv_buffer_size <= 20                               &&
314
760
            v <= 1856000 / 400                                  &&
315
            s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
316
317
380
        put_bits(&s->pb, 1, constraint_parameter_flag);
318
319
380
        ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
320
380
        ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
321
322
380
        if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
323
            AVFrameSideData *side_data;
324
327
            int width = s->width;
325
327
            int height = s->height;
326
            int use_seq_disp_ext;
327
328
327
            put_header(s, EXT_START_CODE);
329
327
            put_bits(&s->pb, 4, 1);                 // seq ext
330
331
327
            put_bits(&s->pb, 1, s->avctx->profile == FF_PROFILE_MPEG2_422); // escx 1 for 4:2:2 profile
332
333
327
            put_bits(&s->pb, 3, s->avctx->profile); // profile
334
327
            put_bits(&s->pb, 4, s->avctx->level);   // level
335
336
327
            put_bits(&s->pb, 1, s->progressive_sequence);
337
327
            put_bits(&s->pb, 2, s->chroma_format);
338
327
            put_bits(&s->pb, 2, s->width  >> 12);
339
327
            put_bits(&s->pb, 2, s->height >> 12);
340
327
            put_bits(&s->pb, 12, v >> 18);          // bitrate ext
341
327
            put_bits(&s->pb, 1, 1);                 // marker
342
327
            put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
343
327
            put_bits(&s->pb, 1, s->low_delay);
344
327
            put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
345
327
            put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
346
347
327
            side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
348
327
            if (side_data) {
349
                AVPanScan *pan_scan = (AVPanScan *)side_data->data;
350
                if (pan_scan->width && pan_scan->height) {
351
                    width = pan_scan->width >> 4;
352
                    height = pan_scan->height >> 4;
353
                }
354
            }
355
356
981
            use_seq_disp_ext = (width != s->width ||
357
327
                                height != s->height ||
358
327
                                s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
359
327
                                s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
360

981
                                s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED ||
361
327
                                s->video_format != VIDEO_FORMAT_UNSPECIFIED);
362
363

327
            if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
364
                put_header(s, EXT_START_CODE);
365
                put_bits(&s->pb, 4, 2);                         // sequence display extension
366
                put_bits(&s->pb, 3, s->video_format);           // video_format
367
                put_bits(&s->pb, 1, 1);                         // colour_description
368
                put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
369
                put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
370
                put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
371
                put_bits(&s->pb, 14, width);                    // display_horizontal_size
372
                put_bits(&s->pb, 1, 1);                         // marker_bit
373
                put_bits(&s->pb, 14, height);                   // display_vertical_size
374
                put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
375
            }
376
        }
377
378
380
        put_header(s, GOP_START_CODE);
379
380
        put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
380
        /* time code: we must convert from the real frame rate to a
381
         * fake MPEG frame rate in case of low frame rate */
382
380
        fps       = (framerate.num + framerate.den / 2) / framerate.den;
383
380
        time_code = s->current_picture_ptr->f->coded_picture_number +
384
380
                    s->timecode_frame_start;
385
386
380
        s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
387
388
380
        av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
389
380
        if (s->drop_frame_timecode)
390
9
            time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
391
392
380
        put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
393
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
394
380
        put_bits(&s->pb, 1, 1);
395
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
396
380
        put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
397

380
        put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
398
380
        put_bits(&s->pb, 1, 0);                     // broken link
399
    }
400
2240
}
401
402
1553801
static inline void encode_mb_skip_run(MpegEncContext *s, int run)
403
{
404
1622203
    while (run >= 33) {
405
68402
        put_bits(&s->pb, 11, 0x008);
406
68402
        run -= 33;
407
    }
408
1553801
    put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
409
1553801
             ff_mpeg12_mbAddrIncrTable[run][0]);
410
1553801
}
411
412
474731
static av_always_inline void put_qscale(MpegEncContext *s)
413
{
414
474731
    put_bits(&s->pb, 5, s->qscale);
415
474731
}
416
417
288963
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
418
{
419

288963
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
420
        put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
421
        /* slice_vertical_position_extension */
422
        put_bits(&s->pb, 3, s->mb_y >> 7);
423
    } else {
424
288963
        put_header(s, SLICE_MIN_START_CODE + s->mb_y);
425
    }
426
288963
    put_qscale(s);
427
    /* slice extra information */
428
288963
    put_bits(&s->pb, 1, 0);
429
288963
}
430
431
2240
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
432
{
433
    AVFrameSideData *side_data;
434
2240
    mpeg1_encode_sequence_header(s);
435
436
    /* MPEG-1 picture header */
437
2240
    put_header(s, PICTURE_START_CODE);
438
    /* temporal reference */
439
440
    // RAL: s->picture_number instead of s->fake_picture_number
441
2240
    put_bits(&s->pb, 10,
442
2240
             (s->picture_number - s->gop_picture_number) & 0x3ff);
443
2240
    put_bits(&s->pb, 3, s->pict_type);
444
445
2240
    s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
446
2240
    put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
447
448
    // RAL: Forward f_code also needed for B-frames
449
2240
    if (s->pict_type == AV_PICTURE_TYPE_P ||
450
1087
        s->pict_type == AV_PICTURE_TYPE_B) {
451
1860
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
452
1860
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
453
427
            put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
454
        else
455
1433
            put_bits(&s->pb, 3, 7);             /* forward_f_code */
456
    }
457
458
    // RAL: Backward f_code necessary for B-frames
459
2240
    if (s->pict_type == AV_PICTURE_TYPE_B) {
460
707
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
461
707
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
462
144
            put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
463
        else
464
563
            put_bits(&s->pb, 3, 7);             /* backward_f_code */
465
    }
466
467
2240
    put_bits(&s->pb, 1, 0);                     /* extra bit picture */
468
469
2240
    s->frame_pred_frame_dct = 1;
470
2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
471
1760
        put_header(s, EXT_START_CODE);
472
1760
        put_bits(&s->pb, 4, 8);                 /* pic ext */
473
1760
        if (s->pict_type == AV_PICTURE_TYPE_P ||
474
890
            s->pict_type == AV_PICTURE_TYPE_B) {
475
1433
            put_bits(&s->pb, 4, s->f_code);
476
1433
            put_bits(&s->pb, 4, s->f_code);
477
        } else {
478
327
            put_bits(&s->pb, 8, 255);
479
        }
480
1760
        if (s->pict_type == AV_PICTURE_TYPE_B) {
481
563
            put_bits(&s->pb, 4, s->b_code);
482
563
            put_bits(&s->pb, 4, s->b_code);
483
        } else {
484
1197
            put_bits(&s->pb, 8, 255);
485
        }
486
1760
        put_bits(&s->pb, 2, s->intra_dc_precision);
487
488
1760
        av_assert0(s->picture_structure == PICT_FRAME);
489
1760
        put_bits(&s->pb, 2, s->picture_structure);
490
1760
        if (s->progressive_sequence)
491
810
            put_bits(&s->pb, 1, 0);             /* no repeat */
492
        else
493
950
            put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
494
        /* XXX: optimize the generation of this flag with entropy measures */
495
1760
        s->frame_pred_frame_dct = s->progressive_sequence;
496
497
1760
        put_bits(&s->pb, 1, s->frame_pred_frame_dct);
498
1760
        put_bits(&s->pb, 1, s->concealment_motion_vectors);
499
1760
        put_bits(&s->pb, 1, s->q_scale_type);
500
1760
        put_bits(&s->pb, 1, s->intra_vlc_format);
501
1760
        put_bits(&s->pb, 1, s->alternate_scan);
502
1760
        put_bits(&s->pb, 1, s->repeat_first_field);
503
1760
        s->progressive_frame = s->progressive_sequence;
504
        /* chroma_420_type */
505
3170
        put_bits(&s->pb, 1, s->chroma_format ==
506
1410
                            CHROMA_420 ? s->progressive_frame : 0);
507
1760
        put_bits(&s->pb, 1, s->progressive_frame);
508
1760
        put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
509
    }
510
2240
    if (s->scan_offset) {
511
        int i;
512
513
        put_header(s, USER_START_CODE);
514
        for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
515
            put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
516
    }
517
2240
    side_data = av_frame_get_side_data(s->current_picture_ptr->f,
518
                                       AV_FRAME_DATA_STEREO3D);
519
2240
    if (side_data) {
520
        AVStereo3D *stereo = (AVStereo3D *)side_data->data;
521
        uint8_t fpa_type;
522
523
        switch (stereo->type) {
524
        case AV_STEREO3D_SIDEBYSIDE:
525
            fpa_type = 0x03;
526
            break;
527
        case AV_STEREO3D_TOPBOTTOM:
528
            fpa_type = 0x04;
529
            break;
530
        case AV_STEREO3D_2D:
531
            fpa_type = 0x08;
532
            break;
533
        case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
534
            fpa_type = 0x23;
535
            break;
536
        default:
537
            fpa_type = 0;
538
            break;
539
        }
540
541
        if (fpa_type != 0) {
542
            put_header(s, USER_START_CODE);
543
            put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
544
            put_bits(&s->pb, 8, 'P');
545
            put_bits(&s->pb, 8, '3');
546
            put_bits(&s->pb, 8, 'D');
547
            put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
548
549
            put_bits(&s->pb, 1, 1);     // reserved_bit
550
            put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
551
            put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
552
            put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
553
        }
554
    }
555
556

2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->a53_cc) {
557
1760
        side_data = av_frame_get_side_data(s->current_picture_ptr->f,
558
            AV_FRAME_DATA_A53_CC);
559
1760
        if (side_data) {
560
            if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) {
561
                int i = 0;
562
563
                put_header (s, USER_START_CODE);
564
565
                put_bits(&s->pb, 8, 'G');                   // user_identifier
566
                put_bits(&s->pb, 8, 'A');
567
                put_bits(&s->pb, 8, '9');
568
                put_bits(&s->pb, 8, '4');
569
                put_bits(&s->pb, 8, 3);                     // user_data_type_code
570
                put_bits(&s->pb, 8,
571
                    (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
572
                put_bits(&s->pb, 8, 0xff);                  // em_data
573
574
                for (i = 0; i < side_data->size; i++)
575
                    put_bits(&s->pb, 8, side_data->data[i]);
576
577
                put_bits(&s->pb, 8, 0xff);                  // marker_bits
578
            } else {
579
                av_log(s->avctx, AV_LOG_WARNING,
580
                    "Warning Closed Caption size (%d) can not exceed 93 bytes "
581
                    "and must be a multiple of 3\n", side_data->size);
582
            }
583
        }
584
    }
585
586
2240
    s->mb_y = 0;
587
2240
    ff_mpeg1_encode_slice_header(s);
588
2240
}
589
590
1294772
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
591
                                int has_mv, int field_motion)
592
{
593
1294772
    put_bits(&s->pb, n, bits);
594
1294772
    if (!s->frame_pred_frame_dct) {
595
702603
        if (has_mv)
596
            /* motion_type: frame/field */
597
365122
            put_bits(&s->pb, 2, 2 - field_motion);
598
702603
        put_bits(&s->pb, 1, s->interlaced_dct);
599
    }
600
1294772
}
601
602
// RAL: Parameter added: f_or_b_code
603
2963288
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
604
{
605
2963288
    if (val == 0) {
606
        /* zero vector */
607
1169562
        put_bits(&s->pb,
608
1169562
                 ff_mpeg12_mbMotionVectorTable[0][1],
609
1169562
                 ff_mpeg12_mbMotionVectorTable[0][0]);
610
    } else {
611
        int code, sign, bits;
612
1793726
        int bit_size = f_or_b_code - 1;
613
1793726
        int range    = 1 << bit_size;
614
        /* modulo encoding */
615
1793726
        val = sign_extend(val, 5 + bit_size);
616
617
1793726
        if (val >= 0) {
618
874482
            val--;
619
874482
            code = (val >> bit_size) + 1;
620
874482
            bits = val & (range - 1);
621
874482
            sign = 0;
622
        } else {
623
919244
            val = -val;
624
919244
            val--;
625
919244
            code = (val >> bit_size) + 1;
626
919244
            bits = val & (range - 1);
627
919244
            sign = 1;
628
        }
629
630
        av_assert2(code > 0 && code <= 16);
631
632
1793726
        put_bits(&s->pb,
633
1793726
                 ff_mpeg12_mbMotionVectorTable[code][1],
634
1793726
                 ff_mpeg12_mbMotionVectorTable[code][0]);
635
636
1793726
        put_bits(&s->pb, 1, sign);
637
1793726
        if (bit_size > 0)
638
1248476
            put_bits(&s->pb, bit_size, bits);
639
    }
640
2963288
}
641
642
3163394
static inline void encode_dc(MpegEncContext *s, int diff, int component)
643
{
644
3163394
    unsigned int diff_u = diff + 255;
645
3163394
    if (diff_u >= 511) {
646
        int index;
647
648
162210
        if (diff < 0) {
649
113286
            index = av_log2_16bit(-2 * diff);
650
113286
            diff--;
651
        } else {
652
48924
            index = av_log2_16bit(2 * diff);
653
        }
654
162210
        if (component == 0)
655
91380
            put_bits(&s->pb,
656
91380
                     ff_mpeg12_vlc_dc_lum_bits[index] + index,
657
91380
                     (ff_mpeg12_vlc_dc_lum_code[index] << index) +
658
91380
                     av_mod_uintp2(diff, index));
659
        else
660
70830
            put_bits(&s->pb,
661
70830
                     ff_mpeg12_vlc_dc_chroma_bits[index] + index,
662
70830
                     (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
663
70830
                     av_mod_uintp2(diff, index));
664
    } else {
665
3001184
        if (component == 0)
666
1623536
            put_bits(&s->pb,
667
1623536
                     mpeg1_lum_dc_uni[diff + 255] & 0xFF,
668
1623536
                     mpeg1_lum_dc_uni[diff + 255] >> 8);
669
        else
670
1377648
            put_bits(&s->pb,
671
1377648
                     mpeg1_chr_dc_uni[diff + 255] & 0xFF,
672
1377648
                     mpeg1_chr_dc_uni[diff + 255] >> 8);
673
    }
674
3163394
}
675
676
6384584
static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
677
{
678
    int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
679
    int code, component;
680
6384584
    const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
681
682
6384584
    last_index = s->block_last_index[n];
683
684
    /* DC coef */
685
6384584
    if (s->mb_intra) {
686
3163394
        component = (n <= 3 ? 0 : (n & 1) + 1);
687
3163394
        dc        = block[0];                   /* overflow is impossible */
688
3163394
        diff      = dc - s->last_dc[component];
689
3163394
        encode_dc(s, diff, component);
690
3163394
        s->last_dc[component] = dc;
691
3163394
        i = 1;
692
3163394
        if (s->intra_vlc_format)
693
2643692
            table_vlc = ff_rl_mpeg2.table_vlc;
694
    } else {
695
        /* encode the first coefficient: needs to be done here because
696
         * it is handled slightly differently */
697
3221190
        level = block[0];
698
3221190
        if (abs(level) == 1) {
699
942621
            code = ((uint32_t)level >> 31);     /* the sign bit */
700
942621
            put_bits(&s->pb, 2, code | 0x02);
701
942621
            i = 1;
702
        } else {
703
2278569
            i             = 0;
704
2278569
            last_non_zero = -1;
705
2278569
            goto next_coef;
706
        }
707
    }
708
709
    /* now quantify & encode AC coefs */
710
4106015
    last_non_zero = i - 1;
711
712
162593954
    for (; i <= last_index; i++) {
713
156209370
        j     = s->intra_scantable.permutated[i];
714
156209370
        level = block[j];
715
716
158487939
next_coef:
717
        /* encode using VLC */
718
158487939
        if (level != 0) {
719
65399778
            run = i - last_non_zero - 1;
720
721
65399778
            alevel = level;
722
65399778
            MASK_ABS(sign, alevel);
723
65399778
            sign &= 1;
724
725
65399778
            if (alevel <= mpeg1_max_level[0][run]) {
726
63333400
                code = mpeg1_index_run[0][run] + alevel - 1;
727
                /* store the VLC & sign at once */
728
63333400
                put_bits(&s->pb, table_vlc[code][1] + 1,
729
63333400
                         (table_vlc[code][0] << 1) + sign);
730
            } else {
731
                /* escape seems to be pretty rare <5% so I do not optimize it */
732
2066378
                put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
733
                /* escape: only clip in this case */
734
2066378
                put_bits(&s->pb, 6, run);
735
2066378
                if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
736
82631
                    if (alevel < 128) {
737
82631
                        put_sbits(&s->pb, 8, level);
738
                    } else {
739
                        if (level < 0)
740
                            put_bits(&s->pb, 16, 0x8001 + level + 255);
741
                        else
742
                            put_sbits(&s->pb, 16, level);
743
                    }
744
                } else {
745
1983747
                    put_sbits(&s->pb, 12, level);
746
                }
747
            }
748
65399778
            last_non_zero = i;
749
        }
750
    }
751
    /* end of block */
752
6384584
    put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
753
6384584
}
754
755
1567917
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
756
                                                      int16_t block[8][64],
757
                                                      int motion_x, int motion_y,
758
                                                      int mb_block_count)
759
{
760
    int i, cbp;
761
1567917
    const int mb_x     = s->mb_x;
762
1567917
    const int mb_y     = s->mb_y;
763

1567917
    const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
764
765
    /* compute cbp */
766
1567917
    cbp = 0;
767
12261649
    for (i = 0; i < mb_block_count; i++)
768
10693732
        if (s->block_last_index[i] >= 0)
769
6384584
            cbp |= 1 << (mb_block_count - 1 - i);
770
771

1567917
    if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
772
245714
        (mb_x != s->mb_width - 1 ||
773

7348
         (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
774

238908
        ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
775

228671
         (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
776
21548
          (((s->mv_dir & MV_DIR_FORWARD)
777
20583
            ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
778

43096
               (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
779
21548
           ((s->mv_dir & MV_DIR_BACKWARD)
780
20991
            ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
781
21548
               (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
782
14116
        s->mb_skip_run++;
783
14116
        s->qscale -= s->dquant;
784
14116
        s->skip_count++;
785
14116
        s->misc_bits++;
786
14116
        s->last_bits++;
787
14116
        if (s->pict_type == AV_PICTURE_TYPE_P) {
788
10237
            s->last_mv[0][0][0] =
789
10237
            s->last_mv[0][0][1] =
790
10237
            s->last_mv[0][1][0] =
791
10237
            s->last_mv[0][1][1] = 0;
792
        }
793
    } else {
794
1553801
        if (first_mb) {
795
316054
            av_assert0(s->mb_skip_run == 0);
796
316054
            encode_mb_skip_run(s, s->mb_x);
797
        } else {
798
1237747
            encode_mb_skip_run(s, s->mb_skip_run);
799
        }
800
801
1553801
        if (s->pict_type == AV_PICTURE_TYPE_I) {
802

377814
            if (s->dquant && cbp) {
803
                /* macroblock_type: macroblock_quant = 1 */
804
43950
                put_mb_modes(s, 2, 1, 0, 0);
805
43950
                put_qscale(s);
806
            } else {
807
                /* macroblock_type: macroblock_quant = 0 */
808
333864
                put_mb_modes(s, 1, 1, 0, 0);
809
333864
                s->qscale -= s->dquant;
810
            }
811
377814
            s->misc_bits += get_bits_diff(s);
812
377814
            s->i_count++;
813
1175987
        } else if (s->mb_intra) {
814

50915
            if (s->dquant && cbp) {
815
11248
                put_mb_modes(s, 6, 0x01, 0, 0);
816
11248
                put_qscale(s);
817
            } else {
818
39667
                put_mb_modes(s, 5, 0x03, 0, 0);
819
39667
                s->qscale -= s->dquant;
820
            }
821
50915
            s->misc_bits += get_bits_diff(s);
822
50915
            s->i_count++;
823
50915
            memset(s->last_mv, 0, sizeof(s->last_mv));
824
1125072
        } else if (s->pict_type == AV_PICTURE_TYPE_P) {
825
543728
            if (s->mv_type == MV_TYPE_16X16) {
826
520775
                if (cbp != 0) {
827
455483
                    if ((motion_x | motion_y) == 0) {
828
43428
                        if (s->dquant) {
829
                            /* macroblock_pattern & quant */
830
4208
                            put_mb_modes(s, 5, 1, 0, 0);
831
4208
                            put_qscale(s);
832
                        } else {
833
                            /* macroblock_pattern only */
834
39220
                            put_mb_modes(s, 2, 1, 0, 0);
835
                        }
836
43428
                        s->misc_bits += get_bits_diff(s);
837
                    } else {
838
412055
                        if (s->dquant) {
839
70756
                            put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
840
70756
                            put_qscale(s);
841
                        } else {
842
341299
                            put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
843
                        }
844
412055
                        s->misc_bits += get_bits_diff(s);
845
                        // RAL: f_code parameter added
846
412055
                        mpeg1_encode_motion(s,
847
412055
                                            motion_x - s->last_mv[0][0][0],
848
                                            s->f_code);
849
                        // RAL: f_code parameter added
850
412055
                        mpeg1_encode_motion(s,
851
412055
                                            motion_y - s->last_mv[0][0][1],
852
                                            s->f_code);
853
412055
                        s->mv_bits += get_bits_diff(s);
854
                    }
855
                } else {
856
65292
                    put_bits(&s->pb, 3, 1);         /* motion only */
857
65292
                    if (!s->frame_pred_frame_dct)
858
16441
                        put_bits(&s->pb, 2, 2);     /* motion_type: frame */
859
65292
                    s->misc_bits += get_bits_diff(s);
860
                    // RAL: f_code parameter added
861
65292
                    mpeg1_encode_motion(s,
862
65292
                                        motion_x - s->last_mv[0][0][0],
863
                                        s->f_code);
864
                    // RAL: f_code parameter added
865
65292
                    mpeg1_encode_motion(s,
866
65292
                                        motion_y - s->last_mv[0][0][1],
867
                                        s->f_code);
868
65292
                    s->qscale  -= s->dquant;
869
65292
                    s->mv_bits += get_bits_diff(s);
870
                }
871
520775
                s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
872
520775
                s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
873
            } else {
874
                av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
875
876
22953
                if (cbp) {
877
21459
                    if (s->dquant) {
878
                        put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
879
                        put_qscale(s);
880
                    } else {
881
21459
                        put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
882
                    }
883
                } else {
884
1494
                    put_bits(&s->pb, 3, 1);             /* motion only */
885
1494
                    put_bits(&s->pb, 2, 1);             /* motion_type: field */
886
1494
                    s->qscale -= s->dquant;
887
                }
888
22953
                s->misc_bits += get_bits_diff(s);
889
68859
                for (i = 0; i < 2; i++) {
890
45906
                    put_bits(&s->pb, 1, s->field_select[0][i]);
891
45906
                    mpeg1_encode_motion(s,
892
45906
                                        s->mv[0][i][0] - s->last_mv[0][i][0],
893
                                        s->f_code);
894
45906
                    mpeg1_encode_motion(s,
895
45906
                                        s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
896
                                        s->f_code);
897
45906
                    s->last_mv[0][i][0] = s->mv[0][i][0];
898
45906
                    s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
899
                }
900
22953
                s->mv_bits += get_bits_diff(s);
901
            }
902
543728
            if (cbp) {
903
476942
                if (s->chroma_y_shift) {
904
401019
                    put_bits(&s->pb,
905
401019
                             ff_mpeg12_mbPatTable[cbp][1],
906
401019
                             ff_mpeg12_mbPatTable[cbp][0]);
907
                } else {
908
75923
                    put_bits(&s->pb,
909
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
910
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
911
75923
                    put_sbits(&s->pb, 2, cbp);
912
                }
913
            }
914
543728
            s->f_count++;
915
        } else {
916
581344
            if (s->mv_type == MV_TYPE_16X16) {
917
486295
                if (cbp) {                      // With coded bloc pattern
918
314569
                    if (s->dquant) {
919
55606
                        if (s->mv_dir == MV_DIR_FORWARD)
920
12773
                            put_mb_modes(s, 6, 3, 1, 0);
921
                        else
922
42833
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
923
55606
                        put_qscale(s);
924
                    } else {
925
258963
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
926
                    }
927
                } else {                        // No coded bloc pattern
928
171726
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
929
171726
                    if (!s->frame_pred_frame_dct)
930
78149
                        put_bits(&s->pb, 2, 2); /* motion_type: frame */
931
171726
                    s->qscale -= s->dquant;
932
                }
933
486295
                s->misc_bits += get_bits_diff(s);
934
486295
                if (s->mv_dir & MV_DIR_FORWARD) {
935
347991
                    mpeg1_encode_motion(s,
936
347991
                                        s->mv[0][0][0] - s->last_mv[0][0][0],
937
                                        s->f_code);
938
347991
                    mpeg1_encode_motion(s,
939
347991
                                        s->mv[0][0][1] - s->last_mv[0][0][1],
940
                                        s->f_code);
941
347991
                    s->last_mv[0][0][0] =
942
347991
                    s->last_mv[0][1][0] = s->mv[0][0][0];
943
347991
                    s->last_mv[0][0][1] =
944
347991
                    s->last_mv[0][1][1] = s->mv[0][0][1];
945
347991
                    s->f_count++;
946
                }
947
486295
                if (s->mv_dir & MV_DIR_BACKWARD) {
948
366304
                    mpeg1_encode_motion(s,
949
366304
                                        s->mv[1][0][0] - s->last_mv[1][0][0],
950
                                        s->b_code);
951
366304
                    mpeg1_encode_motion(s,
952
366304
                                        s->mv[1][0][1] - s->last_mv[1][0][1],
953
                                        s->b_code);
954
366304
                    s->last_mv[1][0][0] =
955
366304
                    s->last_mv[1][1][0] = s->mv[1][0][0];
956
366304
                    s->last_mv[1][0][1] =
957
366304
                    s->last_mv[1][1][1] = s->mv[1][0][1];
958
366304
                    s->b_count++;
959
                }
960
            } else {
961
                av_assert2(s->mv_type == MV_TYPE_FIELD);
962
                av_assert2(!s->frame_pred_frame_dct);
963
95049
                if (cbp) {                      // With coded bloc pattern
964
74532
                    if (s->dquant) {
965
                        if (s->mv_dir == MV_DIR_FORWARD)
966
                            put_mb_modes(s, 6, 3, 1, 1);
967
                        else
968
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
969
                        put_qscale(s);
970
                    } else {
971
74532
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
972
                    }
973
                } else {                        // No coded bloc pattern
974
20517
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
975
20517
                    put_bits(&s->pb, 2, 1);     /* motion_type: field */
976
20517
                    s->qscale -= s->dquant;
977
                }
978
95049
                s->misc_bits += get_bits_diff(s);
979
95049
                if (s->mv_dir & MV_DIR_FORWARD) {
980
182619
                    for (i = 0; i < 2; i++) {
981
121746
                        put_bits(&s->pb, 1, s->field_select[0][i]);
982
121746
                        mpeg1_encode_motion(s,
983
121746
                                            s->mv[0][i][0] - s->last_mv[0][i][0],
984
                                            s->f_code);
985
121746
                        mpeg1_encode_motion(s,
986
121746
                                            s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
987
                                            s->f_code);
988
121746
                        s->last_mv[0][i][0] = s->mv[0][i][0];
989
121746
                        s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
990
                    }
991
60873
                    s->f_count++;
992
                }
993
95049
                if (s->mv_dir & MV_DIR_BACKWARD) {
994
183525
                    for (i = 0; i < 2; i++) {
995
122350
                        put_bits(&s->pb, 1, s->field_select[1][i]);
996
122350
                        mpeg1_encode_motion(s,
997
122350
                                            s->mv[1][i][0] - s->last_mv[1][i][0],
998
                                            s->b_code);
999
122350
                        mpeg1_encode_motion(s,
1000
122350
                                            s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
1001
                                            s->b_code);
1002
122350
                        s->last_mv[1][i][0] = s->mv[1][i][0];
1003
122350
                        s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
1004
                    }
1005
61175
                    s->b_count++;
1006
                }
1007
            }
1008
581344
            s->mv_bits += get_bits_diff(s);
1009
581344
            if (cbp) {
1010
389101
                if (s->chroma_y_shift) {
1011
206508
                    put_bits(&s->pb,
1012
206508
                             ff_mpeg12_mbPatTable[cbp][1],
1013
206508
                             ff_mpeg12_mbPatTable[cbp][0]);
1014
                } else {
1015
182593
                    put_bits(&s->pb,
1016
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
1017
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
1018
182593
                    put_sbits(&s->pb, 2, cbp);
1019
                }
1020
            }
1021
        }
1022
12161611
        for (i = 0; i < mb_block_count; i++)
1023
10607810
            if (cbp & (1 << (mb_block_count - 1 - i)))
1024
6384584
                mpeg1_encode_block(s, block[i], i);
1025
1553801
        s->mb_skip_run = 0;
1026
1553801
        if (s->mb_intra)
1027
428729
            s->i_tex_bits += get_bits_diff(s);
1028
        else
1029
1125072
            s->p_tex_bits += get_bits_diff(s);
1030
    }
1031
1567917
}
1032
1033
1567917
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
1034
                        int motion_x, int motion_y)
1035
{
1036
1567917
    if (s->chroma_format == CHROMA_420)
1037
924802
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
1038
    else
1039
643115
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
1040
1567917
}
1041
1042
48
static av_cold void mpeg12_encode_init_static(void)
1043
{
1044
    static uint8_t mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
1045
1046
48
    ff_rl_init(&ff_rl_mpeg1, mpeg12_static_rl_table_store[0]);
1047
48
    ff_rl_init(&ff_rl_mpeg2, mpeg12_static_rl_table_store[1]);
1048
1049
3120
    for (int i = 0; i < 64; i++) {
1050
3072
        mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1051
3072
        mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1052
    }
1053
1054
48
    ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1055
48
    ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1056
1057
    /* build unified dc encoding tables */
1058
24576
    for (int i = -255; i < 256; i++) {
1059
        int adiff, index;
1060
        int bits, code;
1061
24528
        int diff = i;
1062
1063
24528
        adiff = FFABS(diff);
1064
24528
        if (diff < 0)
1065
12240
            diff--;
1066
24528
        index = av_log2(2 * adiff);
1067
1068
24528
        bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1069
24528
        code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1070
24528
               av_mod_uintp2(diff, index);
1071
24528
        mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1072
1073
24528
        bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1074
24528
        code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1075
24528
               av_mod_uintp2(diff, index);
1076
24528
        mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1077
    }
1078
1079
384
    for (int f_code = 1; f_code <= MAX_FCODE; f_code++)
1080
5505696
        for (int mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1081
            int len;
1082
1083
5505360
            if (mv == 0) {
1084
336
                len = ff_mpeg12_mbMotionVectorTable[0][1];
1085
            } else {
1086
                int val, bit_size, code;
1087
1088
5505024
                bit_size = f_code - 1;
1089
1090
5505024
                val = mv;
1091
5505024
                if (val < 0)
1092
2752512
                    val = -val;
1093
5505024
                val--;
1094
5505024
                code = (val >> bit_size) + 1;
1095
5505024
                if (code < 17)
1096
195072
                    len = ff_mpeg12_mbMotionVectorTable[code][1] +
1097
                          1 + bit_size;
1098
                else
1099
5309952
                    len = ff_mpeg12_mbMotionVectorTable[16][1] +
1100
                          2 + bit_size;
1101
            }
1102
1103
5505360
            mv_penalty[f_code][mv + MAX_DMV] = len;
1104
        }
1105
1106
1107
384
    for (int f_code = MAX_FCODE; f_code > 0; f_code--)
1108
195408
        for (int mv = -(8 << f_code); mv < (8 << f_code); mv++)
1109
195072
            fcode_tab[mv + MAX_MV] = f_code;
1110
48
}
1111
1112
48
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
1113
{
1114
    static AVOnce init_static_once = AV_ONCE_INIT;
1115
1116
48
    ff_mpeg12_common_init(s);
1117
1118
48
    s->me.mv_penalty = mv_penalty;
1119
48
    s->fcode_tab     = fcode_tab;
1120
48
    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1121
11
        s->min_qcoeff = -255;
1122
11
        s->max_qcoeff = 255;
1123
    } else {
1124
37
        s->min_qcoeff = -2047;
1125
37
        s->max_qcoeff = 2047;
1126
    }
1127
48
    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
35
        s->intra_ac_vlc_length      =
1132
35
        s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1133
    }
1134
48
    s->inter_ac_vlc_length      =
1135
48
    s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1136
1137
48
    ff_thread_once(&init_static_once, mpeg12_encode_init_static);
1138
48
}
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
1152
static const AVOption mpeg1_options[] = {
1153
    COMMON_OPTS
1154
    FF_MPV_COMMON_OPTS
1155
    { NULL },
1156
};
1157
1158
static const AVOption mpeg2_options[] = {
1159
    COMMON_OPTS
1160
    { "intra_vlc",        "Use MPEG-2 intra VLC table.",
1161
      OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1162
    { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1163
    { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1164
    { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1165
    {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1166
    {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1167
    {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1168
    { "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" },
1169
    {     "component",    NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_COMPONENT  },  0, 0, VE, "video_format" },
1170
    {     "pal",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_PAL        },  0, 0, VE, "video_format" },
1171
    {     "ntsc",         NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_NTSC       },  0, 0, VE, "video_format" },
1172
    {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
1173
    {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
1174
    {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
1175
#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "avctx.level"
1176
    { LEVEL("high",     4) },
1177
    { LEVEL("high1440", 6) },
1178
    { LEVEL("main",     8) },
1179
    { LEVEL("low",     10) },
1180
#undef LEVEL
1181
    FF_MPV_COMMON_OPTS
1182
    FF_MPEG2_PROFILE_OPTS
1183
    { NULL },
1184
};
1185
1186
#define mpeg12_class(x)                                 \
1187
static const AVClass mpeg ## x ## _class = {            \
1188
    .class_name = "mpeg" # x "video encoder",           \
1189
    .item_name  = av_default_item_name,                 \
1190
    .option     = mpeg ## x ## _options,                \
1191
    .version    = LIBAVUTIL_VERSION_INT,                \
1192
};
1193
1194
mpeg12_class(1)
1195
mpeg12_class(2)
1196
1197
AVCodec ff_mpeg1video_encoder = {
1198
    .name                 = "mpeg1video",
1199
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1200
    .type                 = AVMEDIA_TYPE_VIDEO,
1201
    .id                   = AV_CODEC_ID_MPEG1VIDEO,
1202
    .priv_data_size       = sizeof(MpegEncContext),
1203
    .init                 = encode_init,
1204
    .encode2              = ff_mpv_encode_picture,
1205
    .close                = ff_mpv_encode_end,
1206
    .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1207
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1208
                                                           AV_PIX_FMT_NONE },
1209
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1210
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1211
    .priv_class           = &mpeg1_class,
1212
};
1213
1214
AVCodec ff_mpeg2video_encoder = {
1215
    .name                 = "mpeg2video",
1216
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1217
    .type                 = AVMEDIA_TYPE_VIDEO,
1218
    .id                   = AV_CODEC_ID_MPEG2VIDEO,
1219
    .priv_data_size       = sizeof(MpegEncContext),
1220
    .init                 = encode_init,
1221
    .encode2              = ff_mpv_encode_picture,
1222
    .close                = ff_mpv_encode_end,
1223
    .supported_framerates = ff_mpeg2_frame_rate_tab,
1224
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1225
                                                           AV_PIX_FMT_YUV422P,
1226
                                                           AV_PIX_FMT_NONE },
1227
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1228
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1229
    .priv_class           = &mpeg2_class,
1230
};
1231
#endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */