GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/mpeg12enc.c Lines: 584 683 85.5 %
Date: 2020-09-25 23:16:12 Branches: 314 413 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 "libavutil/attributes.h"
31
#include "libavutil/avassert.h"
32
#include "libavutil/log.h"
33
#include "libavutil/opt.h"
34
#include "libavutil/timecode.h"
35
#include "libavutil/stereo3d.h"
36
37
#include "avcodec.h"
38
#include "bytestream.h"
39
#include "mathops.h"
40
#include "mpeg12.h"
41
#include "mpeg12data.h"
42
#include "mpegutils.h"
43
#include "mpegvideo.h"
44
#include "profiles.h"
45
46
static const uint8_t svcd_scan_offset_placeholder[] = {
47
    0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
48
    0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
49
};
50
51
static uint8_t mv_penalty[MAX_FCODE + 1][MAX_DMV * 2 + 1];
52
static uint8_t fcode_tab[MAX_MV * 2 + 1];
53
54
static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2];
55
static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2];
56
57
/* simple include everything table for dc, first byte is bits
58
 * number next 3 are code */
59
static uint32_t mpeg1_lum_dc_uni[512];
60
static uint32_t mpeg1_chr_dc_uni[512];
61
62
static uint8_t mpeg1_index_run[2][64];
63
static int8_t  mpeg1_max_level[2][64];
64
65
#define A53_MAX_CC_COUNT 0x1f
66
67
61
static av_cold void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len)
68
{
69
    int i;
70
71
7869
    for (i = 0; i < 128; i++) {
72
7808
        int level = i - 64;
73
        int run;
74
7808
        if (!level)
75
61
            continue;
76
503555
        for (run = 0; run < 64; run++) {
77
            int len, code;
78
495808
            int alevel = FFABS(level);
79
80
495808
            if (alevel > rl->max_level[0][run])
81
482266
                code = 111;                         /* rl->n */
82
            else
83
13542
                code = rl->index_run[0][run] + alevel - 1;
84
85
495808
            if (code < 111) {                       /* rl->n */
86
                /* length of VLC and sign */
87
13542
                len = rl->table_vlc[code][1] + 1;
88
            } else {
89
482266
                len = rl->table_vlc[111 /* rl->n */][1] + 6;
90
91
482266
                if (alevel < 128)
92
482266
                    len += 8;
93
                else
94
                    len += 16;
95
            }
96
97
495808
            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
98
        }
99
    }
100
61
}
101
102
48
static int find_frame_rate_index(MpegEncContext *s)
103
{
104
    int i;
105
48
    AVRational bestq = (AVRational) {0, 0};
106
    AVRational ext;
107
48
    AVRational target = av_inv_q(s->avctx->time_base);
108
109
432
    for (i = 1; i < 14; i++) {
110

432
        if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
111
            i >= 9)
112
48
            break;
113
114
1920
        for (ext.num=1; ext.num <= 4; ext.num++) {
115
50688
            for (ext.den=1; ext.den <= 32; ext.den++) {
116
49152
                AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
117
118

49152
                if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
119
23608
                    continue;
120
37976
                if (av_gcd(ext.den, ext.num) != 1)
121
12432
                    continue;
122
123
25544
                if (    bestq.num==0
124
25496
                    || av_nearer_q(target, bestq, q) < 0
125

25399
                    || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
126
145
                    bestq               = q;
127
145
                    s->frame_rate_index = i;
128
145
                    s->mpeg2_frame_rate_ext.num = ext.num;
129
145
                    s->mpeg2_frame_rate_ext.den = ext.den;
130
                }
131
            }
132
        }
133
    }
134
135
48
    if (av_cmp_q(target, bestq))
136
        return -1;
137
    else
138
48
        return 0;
139
}
140
141
48
static av_cold int encode_init(AVCodecContext *avctx)
142
{
143
    int ret;
144
48
    MpegEncContext *s = avctx->priv_data;
145
146
48
    if ((ret = ff_mpv_encode_init(avctx)) < 0)
147
        return ret;
148
149
48
    if (find_frame_rate_index(s) < 0) {
150
        if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
151
            av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n",
152
                   avctx->time_base.den, avctx->time_base.num);
153
            return AVERROR(EINVAL);
154
        } else {
155
            av_log(avctx, AV_LOG_INFO,
156
                   "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n",
157
                   avctx->time_base.den, avctx->time_base.num);
158
        }
159
    }
160
161
48
    if (avctx->profile == FF_PROFILE_UNKNOWN) {
162
48
        if (avctx->level != FF_LEVEL_UNKNOWN) {
163
            av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
164
            return AVERROR(EINVAL);
165
        }
166
        /* Main or 4:2:2 */
167
48
        avctx->profile = s->chroma_format == CHROMA_420 ? FF_PROFILE_MPEG2_MAIN : FF_PROFILE_MPEG2_422;
168
    }
169
170
48
    if (avctx->level == FF_LEVEL_UNKNOWN) {
171
48
        if (avctx->profile == FF_PROFILE_MPEG2_422) {   /* 4:2:2 */
172

5
            if (avctx->width <= 720 && avctx->height <= 608)
173
5
                avctx->level = 5;                   /* Main */
174
            else
175
                avctx->level = 2;                   /* High */
176
        } else {
177

43
            if (avctx->profile != FF_PROFILE_MPEG2_HIGH && s->chroma_format != CHROMA_420) {
178
                av_log(avctx, AV_LOG_ERROR,
179
                       "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
180
                return AVERROR(EINVAL);
181
            }
182

43
            if (avctx->width <= 720 && avctx->height <= 576)
183
43
                avctx->level = 8;                   /* Main */
184
            else if (avctx->width <= 1440)
185
                avctx->level = 6;                   /* High 1440 */
186
            else
187
                avctx->level = 4;                   /* High */
188
        }
189
    }
190
191

48
    if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
192
        av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
193
        return AVERROR(EINVAL);
194
    }
195
196
48
    if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
197

48
        if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
198
            av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n"
199
                                        "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
200
            return AVERROR(EINVAL);
201
        }
202
    }
203
204

48
    s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
205
48
    if (s->drop_frame_timecode)
206
        s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
207

48
    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
208
        av_log(avctx, AV_LOG_ERROR,
209
               "Drop frame time code only allowed with 1001/30000 fps\n");
210
        return AVERROR(EINVAL);
211
    }
212
213
#if FF_API_PRIVATE_OPT
214
FF_DISABLE_DEPRECATION_WARNINGS
215
48
    if (avctx->timecode_frame_start)
216
48
        s->timecode_frame_start = avctx->timecode_frame_start;
217
FF_ENABLE_DEPRECATION_WARNINGS
218
#endif
219
220
48
    if (s->tc_opt_str) {
221
6
        AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
222
6
        int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
223
6
        if (ret < 0)
224
            return ret;
225
6
        s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
226
6
        s->timecode_frame_start = s->tc.start;
227
    } else {
228
42
        s->timecode_frame_start = 0; // default is -1
229
    }
230
231
48
    return 0;
232
}
233
234
294050
static void put_header(MpegEncContext *s, int header)
235
{
236
294050
    avpriv_align_put_bits(&s->pb);
237
294050
    put_bits(&s->pb, 16, header >> 16);
238
294050
    put_sbits(&s->pb, 16, header);
239
294050
}
240
241
/* put sequence header if needed */
242
2240
static void mpeg1_encode_sequence_header(MpegEncContext *s)
243
{
244
    unsigned int vbv_buffer_size, fps, v;
245
    int i, constraint_parameter_flag;
246
    uint64_t time_code;
247
2240
    int64_t best_aspect_error = INT64_MAX;
248
2240
    AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
249
250

2240
    if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
251
2240
        aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
252
253
2240
    if (s->current_picture.f->key_frame) {
254
380
        AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
255
256
        /* MPEG-1 header repeated every GOP */
257
380
        put_header(s, SEQ_START_CODE);
258
259
380
        put_sbits(&s->pb, 12, s->width  & 0xFFF);
260
380
        put_sbits(&s->pb, 12, s->height & 0xFFF);
261
262
5700
        for (i = 1; i < 15; i++) {
263
5320
            int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
264

5320
            if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
265
1069
                error -= (1LL<<32) / ff_mpeg1_aspect[i];
266
            else
267
4251
                error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
268
269
5320
            error = FFABS(error);
270
271
5320
            if (error - 2 <= best_aspect_error) {
272
380
                best_aspect_error    = error;
273
380
                s->aspect_ratio_info = i;
274
            }
275
        }
276
277
380
        put_bits(&s->pb, 4, s->aspect_ratio_info);
278
380
        put_bits(&s->pb, 4, s->frame_rate_index);
279
280
380
        if (s->avctx->rc_max_rate) {
281
150
            v = (s->avctx->rc_max_rate + 399) / 400;
282

150
            if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
283
                v = 0x3ffff;
284
        } else {
285
230
            v = 0x3FFFF;
286
        }
287
288
380
        if (s->avctx->rc_buffer_size)
289
150
            vbv_buffer_size = s->avctx->rc_buffer_size;
290
        else
291
            /* VBV calculation: Scaled so that a VCD has the proper
292
             * VBV size of 40 kilobytes */
293
230
            vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
294
380
        vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
295
296
380
        put_sbits(&s->pb, 18, v);
297
380
        put_bits(&s->pb, 1, 1);         // marker
298
380
        put_sbits(&s->pb, 10, vbv_buffer_size);
299
300
380
        constraint_parameter_flag =
301
760
            s->width  <= 768                                    &&
302
380
            s->height <= 576                                    &&
303
230
            s->mb_width * s->mb_height                 <= 396   &&
304
221
            s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
305
215
            framerate.num <= framerate.den * 30                 &&
306
215
            s->avctx->me_range                                  &&
307
            s->avctx->me_range < 128                            &&
308
            vbv_buffer_size <= 20                               &&
309
760
            v <= 1856000 / 400                                  &&
310
            s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
311
312
380
        put_bits(&s->pb, 1, constraint_parameter_flag);
313
314
380
        ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
315
380
        ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
316
317
380
        if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
318
            AVFrameSideData *side_data;
319
327
            int width = s->width;
320
327
            int height = s->height;
321
            int use_seq_disp_ext;
322
323
327
            put_header(s, EXT_START_CODE);
324
327
            put_bits(&s->pb, 4, 1);                 // seq ext
325
326
327
            put_bits(&s->pb, 1, s->avctx->profile == FF_PROFILE_MPEG2_422); // escx 1 for 4:2:2 profile
327
328
327
            put_bits(&s->pb, 3, s->avctx->profile); // profile
329
327
            put_bits(&s->pb, 4, s->avctx->level);   // level
330
331
327
            put_bits(&s->pb, 1, s->progressive_sequence);
332
327
            put_bits(&s->pb, 2, s->chroma_format);
333
327
            put_bits(&s->pb, 2, s->width  >> 12);
334
327
            put_bits(&s->pb, 2, s->height >> 12);
335
327
            put_bits(&s->pb, 12, v >> 18);          // bitrate ext
336
327
            put_bits(&s->pb, 1, 1);                 // marker
337
327
            put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
338
327
            put_bits(&s->pb, 1, s->low_delay);
339
327
            put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
340
327
            put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
341
342
327
            side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
343
327
            if (side_data) {
344
                AVPanScan *pan_scan = (AVPanScan *)side_data->data;
345
                if (pan_scan->width && pan_scan->height) {
346
                    width = pan_scan->width >> 4;
347
                    height = pan_scan->height >> 4;
348
                }
349
            }
350
351
981
            use_seq_disp_ext = (width != s->width ||
352
327
                                height != s->height ||
353
327
                                s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
354
327
                                s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
355

981
                                s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED ||
356
327
                                s->video_format != VIDEO_FORMAT_UNSPECIFIED);
357
358

327
            if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
359
                put_header(s, EXT_START_CODE);
360
                put_bits(&s->pb, 4, 2);                         // sequence display extension
361
                put_bits(&s->pb, 3, s->video_format);           // video_format
362
                put_bits(&s->pb, 1, 1);                         // colour_description
363
                put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
364
                put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
365
                put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
366
                put_bits(&s->pb, 14, width);                    // display_horizontal_size
367
                put_bits(&s->pb, 1, 1);                         // marker_bit
368
                put_bits(&s->pb, 14, height);                   // display_vertical_size
369
                put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
370
            }
371
        }
372
373
380
        put_header(s, GOP_START_CODE);
374
380
        put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
375
        /* time code: we must convert from the real frame rate to a
376
         * fake MPEG frame rate in case of low frame rate */
377
380
        fps       = (framerate.num + framerate.den / 2) / framerate.den;
378
380
        time_code = s->current_picture_ptr->f->coded_picture_number +
379
380
                    s->timecode_frame_start;
380
381
380
        s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
382
383
380
        av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
384
380
        if (s->drop_frame_timecode)
385
9
            time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
386
387
380
        put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
388
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
389
380
        put_bits(&s->pb, 1, 1);
390
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
391
380
        put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
392

380
        put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
393
380
        put_bits(&s->pb, 1, 0);                     // broken link
394
    }
395
2240
}
396
397
1553801
static inline void encode_mb_skip_run(MpegEncContext *s, int run)
398
{
399
1622203
    while (run >= 33) {
400
68402
        put_bits(&s->pb, 11, 0x008);
401
68402
        run -= 33;
402
    }
403
1553801
    put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
404
1553801
             ff_mpeg12_mbAddrIncrTable[run][0]);
405
1553801
}
406
407
474731
static av_always_inline void put_qscale(MpegEncContext *s)
408
{
409
474731
    put_bits(&s->pb, 5, s->qscale);
410
474731
}
411
412
288963
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
413
{
414

288963
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
415
        put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
416
        /* slice_vertical_position_extension */
417
        put_bits(&s->pb, 3, s->mb_y >> 7);
418
    } else {
419
288963
        put_header(s, SLICE_MIN_START_CODE + s->mb_y);
420
    }
421
288963
    put_qscale(s);
422
    /* slice extra information */
423
288963
    put_bits(&s->pb, 1, 0);
424
288963
}
425
426
2240
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
427
{
428
    AVFrameSideData *side_data;
429
2240
    mpeg1_encode_sequence_header(s);
430
431
    /* MPEG-1 picture header */
432
2240
    put_header(s, PICTURE_START_CODE);
433
    /* temporal reference */
434
435
    // RAL: s->picture_number instead of s->fake_picture_number
436
2240
    put_bits(&s->pb, 10,
437
2240
             (s->picture_number - s->gop_picture_number) & 0x3ff);
438
2240
    put_bits(&s->pb, 3, s->pict_type);
439
440
2240
    s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
441
2240
    put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
442
443
    // RAL: Forward f_code also needed for B-frames
444
2240
    if (s->pict_type == AV_PICTURE_TYPE_P ||
445
1087
        s->pict_type == AV_PICTURE_TYPE_B) {
446
1860
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
447
1860
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
448
427
            put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
449
        else
450
1433
            put_bits(&s->pb, 3, 7);             /* forward_f_code */
451
    }
452
453
    // RAL: Backward f_code necessary for B-frames
454
2240
    if (s->pict_type == AV_PICTURE_TYPE_B) {
455
707
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
456
707
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
457
144
            put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
458
        else
459
563
            put_bits(&s->pb, 3, 7);             /* backward_f_code */
460
    }
461
462
2240
    put_bits(&s->pb, 1, 0);                     /* extra bit picture */
463
464
2240
    s->frame_pred_frame_dct = 1;
465
2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
466
1760
        put_header(s, EXT_START_CODE);
467
1760
        put_bits(&s->pb, 4, 8);                 /* pic ext */
468
1760
        if (s->pict_type == AV_PICTURE_TYPE_P ||
469
890
            s->pict_type == AV_PICTURE_TYPE_B) {
470
1433
            put_bits(&s->pb, 4, s->f_code);
471
1433
            put_bits(&s->pb, 4, s->f_code);
472
        } else {
473
327
            put_bits(&s->pb, 8, 255);
474
        }
475
1760
        if (s->pict_type == AV_PICTURE_TYPE_B) {
476
563
            put_bits(&s->pb, 4, s->b_code);
477
563
            put_bits(&s->pb, 4, s->b_code);
478
        } else {
479
1197
            put_bits(&s->pb, 8, 255);
480
        }
481
1760
        put_bits(&s->pb, 2, s->intra_dc_precision);
482
483
1760
        av_assert0(s->picture_structure == PICT_FRAME);
484
1760
        put_bits(&s->pb, 2, s->picture_structure);
485
1760
        if (s->progressive_sequence)
486
810
            put_bits(&s->pb, 1, 0);             /* no repeat */
487
        else
488
950
            put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
489
        /* XXX: optimize the generation of this flag with entropy measures */
490
1760
        s->frame_pred_frame_dct = s->progressive_sequence;
491
492
1760
        put_bits(&s->pb, 1, s->frame_pred_frame_dct);
493
1760
        put_bits(&s->pb, 1, s->concealment_motion_vectors);
494
1760
        put_bits(&s->pb, 1, s->q_scale_type);
495
1760
        put_bits(&s->pb, 1, s->intra_vlc_format);
496
1760
        put_bits(&s->pb, 1, s->alternate_scan);
497
1760
        put_bits(&s->pb, 1, s->repeat_first_field);
498
1760
        s->progressive_frame = s->progressive_sequence;
499
        /* chroma_420_type */
500
3170
        put_bits(&s->pb, 1, s->chroma_format ==
501
1410
                            CHROMA_420 ? s->progressive_frame : 0);
502
1760
        put_bits(&s->pb, 1, s->progressive_frame);
503
1760
        put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
504
    }
505
2240
    if (s->scan_offset) {
506
        int i;
507
508
        put_header(s, USER_START_CODE);
509
        for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
510
            put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
511
    }
512
2240
    side_data = av_frame_get_side_data(s->current_picture_ptr->f,
513
                                       AV_FRAME_DATA_STEREO3D);
514
2240
    if (side_data) {
515
        AVStereo3D *stereo = (AVStereo3D *)side_data->data;
516
        uint8_t fpa_type;
517
518
        switch (stereo->type) {
519
        case AV_STEREO3D_SIDEBYSIDE:
520
            fpa_type = 0x03;
521
            break;
522
        case AV_STEREO3D_TOPBOTTOM:
523
            fpa_type = 0x04;
524
            break;
525
        case AV_STEREO3D_2D:
526
            fpa_type = 0x08;
527
            break;
528
        case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
529
            fpa_type = 0x23;
530
            break;
531
        default:
532
            fpa_type = 0;
533
            break;
534
        }
535
536
        if (fpa_type != 0) {
537
            put_header(s, USER_START_CODE);
538
            put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
539
            put_bits(&s->pb, 8, 'P');
540
            put_bits(&s->pb, 8, '3');
541
            put_bits(&s->pb, 8, 'D');
542
            put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
543
544
            put_bits(&s->pb, 1, 1);     // reserved_bit
545
            put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
546
            put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
547
            put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
548
        }
549
    }
550
551

2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->a53_cc) {
552
1760
        side_data = av_frame_get_side_data(s->current_picture_ptr->f,
553
            AV_FRAME_DATA_A53_CC);
554
1760
        if (side_data) {
555
            if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) {
556
                int i = 0;
557
558
                put_header (s, USER_START_CODE);
559
560
                put_bits(&s->pb, 8, 'G');                   // user_identifier
561
                put_bits(&s->pb, 8, 'A');
562
                put_bits(&s->pb, 8, '9');
563
                put_bits(&s->pb, 8, '4');
564
                put_bits(&s->pb, 8, 3);                     // user_data_type_code
565
                put_bits(&s->pb, 8,
566
                    (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
567
                put_bits(&s->pb, 8, 0xff);                  // em_data
568
569
                for (i = 0; i < side_data->size; i++)
570
                    put_bits(&s->pb, 8, side_data->data[i]);
571
572
                put_bits(&s->pb, 8, 0xff);                  // marker_bits
573
            } else {
574
                av_log(s->avctx, AV_LOG_WARNING,
575
                    "Warning Closed Caption size (%d) can not exceed 93 bytes "
576
                    "and must be a multiple of 3\n", side_data->size);
577
            }
578
        }
579
    }
580
581
2240
    s->mb_y = 0;
582
2240
    ff_mpeg1_encode_slice_header(s);
583
2240
}
584
585
1294772
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
586
                                int has_mv, int field_motion)
587
{
588
1294772
    put_bits(&s->pb, n, bits);
589
1294772
    if (!s->frame_pred_frame_dct) {
590
702603
        if (has_mv)
591
            /* motion_type: frame/field */
592
365122
            put_bits(&s->pb, 2, 2 - field_motion);
593
702603
        put_bits(&s->pb, 1, s->interlaced_dct);
594
    }
595
1294772
}
596
597
// RAL: Parameter added: f_or_b_code
598
2963288
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
599
{
600
2963288
    if (val == 0) {
601
        /* zero vector */
602
1169562
        put_bits(&s->pb,
603
1169562
                 ff_mpeg12_mbMotionVectorTable[0][1],
604
1169562
                 ff_mpeg12_mbMotionVectorTable[0][0]);
605
    } else {
606
        int code, sign, bits;
607
1793726
        int bit_size = f_or_b_code - 1;
608
1793726
        int range    = 1 << bit_size;
609
        /* modulo encoding */
610
1793726
        val = sign_extend(val, 5 + bit_size);
611
612
1793726
        if (val >= 0) {
613
874482
            val--;
614
874482
            code = (val >> bit_size) + 1;
615
874482
            bits = val & (range - 1);
616
874482
            sign = 0;
617
        } else {
618
919244
            val = -val;
619
919244
            val--;
620
919244
            code = (val >> bit_size) + 1;
621
919244
            bits = val & (range - 1);
622
919244
            sign = 1;
623
        }
624
625
        av_assert2(code > 0 && code <= 16);
626
627
1793726
        put_bits(&s->pb,
628
1793726
                 ff_mpeg12_mbMotionVectorTable[code][1],
629
1793726
                 ff_mpeg12_mbMotionVectorTable[code][0]);
630
631
1793726
        put_bits(&s->pb, 1, sign);
632
1793726
        if (bit_size > 0)
633
1248476
            put_bits(&s->pb, bit_size, bits);
634
    }
635
2963288
}
636
637
3163394
static inline void encode_dc(MpegEncContext *s, int diff, int component)
638
{
639
3163394
    unsigned int diff_u = diff + 255;
640
3163394
    if (diff_u >= 511) {
641
        int index;
642
643
162210
        if (diff < 0) {
644
113286
            index = av_log2_16bit(-2 * diff);
645
113286
            diff--;
646
        } else {
647
48924
            index = av_log2_16bit(2 * diff);
648
        }
649
162210
        if (component == 0)
650
91380
            put_bits(&s->pb,
651
91380
                     ff_mpeg12_vlc_dc_lum_bits[index] + index,
652
91380
                     (ff_mpeg12_vlc_dc_lum_code[index] << index) +
653
91380
                     av_mod_uintp2(diff, index));
654
        else
655
70830
            put_bits(&s->pb,
656
70830
                     ff_mpeg12_vlc_dc_chroma_bits[index] + index,
657
70830
                     (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
658
70830
                     av_mod_uintp2(diff, index));
659
    } else {
660
3001184
        if (component == 0)
661
1623536
            put_bits(&s->pb,
662
1623536
                     mpeg1_lum_dc_uni[diff + 255] & 0xFF,
663
1623536
                     mpeg1_lum_dc_uni[diff + 255] >> 8);
664
        else
665
1377648
            put_bits(&s->pb,
666
1377648
                     mpeg1_chr_dc_uni[diff + 255] & 0xFF,
667
1377648
                     mpeg1_chr_dc_uni[diff + 255] >> 8);
668
    }
669
3163394
}
670
671
6384584
static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
672
{
673
    int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
674
    int code, component;
675
6384584
    const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
676
677
6384584
    last_index = s->block_last_index[n];
678
679
    /* DC coef */
680
6384584
    if (s->mb_intra) {
681
3163394
        component = (n <= 3 ? 0 : (n & 1) + 1);
682
3163394
        dc        = block[0];                   /* overflow is impossible */
683
3163394
        diff      = dc - s->last_dc[component];
684
3163394
        encode_dc(s, diff, component);
685
3163394
        s->last_dc[component] = dc;
686
3163394
        i = 1;
687
3163394
        if (s->intra_vlc_format)
688
2643692
            table_vlc = ff_rl_mpeg2.table_vlc;
689
    } else {
690
        /* encode the first coefficient: needs to be done here because
691
         * it is handled slightly differently */
692
3221190
        level = block[0];
693
3221190
        if (abs(level) == 1) {
694
942621
            code = ((uint32_t)level >> 31);     /* the sign bit */
695
942621
            put_bits(&s->pb, 2, code | 0x02);
696
942621
            i = 1;
697
        } else {
698
2278569
            i             = 0;
699
2278569
            last_non_zero = -1;
700
2278569
            goto next_coef;
701
        }
702
    }
703
704
    /* now quantify & encode AC coefs */
705
4106015
    last_non_zero = i - 1;
706
707
162593954
    for (; i <= last_index; i++) {
708
156209370
        j     = s->intra_scantable.permutated[i];
709
156209370
        level = block[j];
710
711
158487939
next_coef:
712
        /* encode using VLC */
713
158487939
        if (level != 0) {
714
65399778
            run = i - last_non_zero - 1;
715
716
65399778
            alevel = level;
717
65399778
            MASK_ABS(sign, alevel);
718
65399778
            sign &= 1;
719
720
65399778
            if (alevel <= mpeg1_max_level[0][run]) {
721
63333400
                code = mpeg1_index_run[0][run] + alevel - 1;
722
                /* store the VLC & sign at once */
723
63333400
                put_bits(&s->pb, table_vlc[code][1] + 1,
724
63333400
                         (table_vlc[code][0] << 1) + sign);
725
            } else {
726
                /* escape seems to be pretty rare <5% so I do not optimize it */
727
2066378
                put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
728
                /* escape: only clip in this case */
729
2066378
                put_bits(&s->pb, 6, run);
730
2066378
                if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
731
82631
                    if (alevel < 128) {
732
82631
                        put_sbits(&s->pb, 8, level);
733
                    } else {
734
                        if (level < 0)
735
                            put_bits(&s->pb, 16, 0x8001 + level + 255);
736
                        else
737
                            put_sbits(&s->pb, 16, level);
738
                    }
739
                } else {
740
1983747
                    put_sbits(&s->pb, 12, level);
741
                }
742
            }
743
65399778
            last_non_zero = i;
744
        }
745
    }
746
    /* end of block */
747
6384584
    put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
748
6384584
}
749
750
1567917
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
751
                                                      int16_t block[8][64],
752
                                                      int motion_x, int motion_y,
753
                                                      int mb_block_count)
754
{
755
    int i, cbp;
756
1567917
    const int mb_x     = s->mb_x;
757
1567917
    const int mb_y     = s->mb_y;
758

1567917
    const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
759
760
    /* compute cbp */
761
1567917
    cbp = 0;
762
12261649
    for (i = 0; i < mb_block_count; i++)
763
10693732
        if (s->block_last_index[i] >= 0)
764
6384584
            cbp |= 1 << (mb_block_count - 1 - i);
765
766

1567917
    if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
767
245714
        (mb_x != s->mb_width - 1 ||
768

7348
         (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
769

238908
        ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
770

228671
         (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
771
21548
          (((s->mv_dir & MV_DIR_FORWARD)
772
20583
            ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
773

43096
               (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
774
21548
           ((s->mv_dir & MV_DIR_BACKWARD)
775
20991
            ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
776
21548
               (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
777
14116
        s->mb_skip_run++;
778
14116
        s->qscale -= s->dquant;
779
14116
        s->skip_count++;
780
14116
        s->misc_bits++;
781
14116
        s->last_bits++;
782
14116
        if (s->pict_type == AV_PICTURE_TYPE_P) {
783
10237
            s->last_mv[0][0][0] =
784
10237
            s->last_mv[0][0][1] =
785
10237
            s->last_mv[0][1][0] =
786
10237
            s->last_mv[0][1][1] = 0;
787
        }
788
    } else {
789
1553801
        if (first_mb) {
790
316054
            av_assert0(s->mb_skip_run == 0);
791
316054
            encode_mb_skip_run(s, s->mb_x);
792
        } else {
793
1237747
            encode_mb_skip_run(s, s->mb_skip_run);
794
        }
795
796
1553801
        if (s->pict_type == AV_PICTURE_TYPE_I) {
797

377814
            if (s->dquant && cbp) {
798
                /* macroblock_type: macroblock_quant = 1 */
799
43950
                put_mb_modes(s, 2, 1, 0, 0);
800
43950
                put_qscale(s);
801
            } else {
802
                /* macroblock_type: macroblock_quant = 0 */
803
333864
                put_mb_modes(s, 1, 1, 0, 0);
804
333864
                s->qscale -= s->dquant;
805
            }
806
377814
            s->misc_bits += get_bits_diff(s);
807
377814
            s->i_count++;
808
1175987
        } else if (s->mb_intra) {
809

50915
            if (s->dquant && cbp) {
810
11248
                put_mb_modes(s, 6, 0x01, 0, 0);
811
11248
                put_qscale(s);
812
            } else {
813
39667
                put_mb_modes(s, 5, 0x03, 0, 0);
814
39667
                s->qscale -= s->dquant;
815
            }
816
50915
            s->misc_bits += get_bits_diff(s);
817
50915
            s->i_count++;
818
50915
            memset(s->last_mv, 0, sizeof(s->last_mv));
819
1125072
        } else if (s->pict_type == AV_PICTURE_TYPE_P) {
820
543728
            if (s->mv_type == MV_TYPE_16X16) {
821
520775
                if (cbp != 0) {
822
455483
                    if ((motion_x | motion_y) == 0) {
823
43428
                        if (s->dquant) {
824
                            /* macroblock_pattern & quant */
825
4208
                            put_mb_modes(s, 5, 1, 0, 0);
826
4208
                            put_qscale(s);
827
                        } else {
828
                            /* macroblock_pattern only */
829
39220
                            put_mb_modes(s, 2, 1, 0, 0);
830
                        }
831
43428
                        s->misc_bits += get_bits_diff(s);
832
                    } else {
833
412055
                        if (s->dquant) {
834
70756
                            put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
835
70756
                            put_qscale(s);
836
                        } else {
837
341299
                            put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
838
                        }
839
412055
                        s->misc_bits += get_bits_diff(s);
840
                        // RAL: f_code parameter added
841
412055
                        mpeg1_encode_motion(s,
842
412055
                                            motion_x - s->last_mv[0][0][0],
843
                                            s->f_code);
844
                        // RAL: f_code parameter added
845
412055
                        mpeg1_encode_motion(s,
846
412055
                                            motion_y - s->last_mv[0][0][1],
847
                                            s->f_code);
848
412055
                        s->mv_bits += get_bits_diff(s);
849
                    }
850
                } else {
851
65292
                    put_bits(&s->pb, 3, 1);         /* motion only */
852
65292
                    if (!s->frame_pred_frame_dct)
853
16441
                        put_bits(&s->pb, 2, 2);     /* motion_type: frame */
854
65292
                    s->misc_bits += get_bits_diff(s);
855
                    // RAL: f_code parameter added
856
65292
                    mpeg1_encode_motion(s,
857
65292
                                        motion_x - s->last_mv[0][0][0],
858
                                        s->f_code);
859
                    // RAL: f_code parameter added
860
65292
                    mpeg1_encode_motion(s,
861
65292
                                        motion_y - s->last_mv[0][0][1],
862
                                        s->f_code);
863
65292
                    s->qscale  -= s->dquant;
864
65292
                    s->mv_bits += get_bits_diff(s);
865
                }
866
520775
                s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
867
520775
                s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
868
            } else {
869
                av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
870
871
22953
                if (cbp) {
872
21459
                    if (s->dquant) {
873
                        put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
874
                        put_qscale(s);
875
                    } else {
876
21459
                        put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
877
                    }
878
                } else {
879
1494
                    put_bits(&s->pb, 3, 1);             /* motion only */
880
1494
                    put_bits(&s->pb, 2, 1);             /* motion_type: field */
881
1494
                    s->qscale -= s->dquant;
882
                }
883
22953
                s->misc_bits += get_bits_diff(s);
884
68859
                for (i = 0; i < 2; i++) {
885
45906
                    put_bits(&s->pb, 1, s->field_select[0][i]);
886
45906
                    mpeg1_encode_motion(s,
887
45906
                                        s->mv[0][i][0] - s->last_mv[0][i][0],
888
                                        s->f_code);
889
45906
                    mpeg1_encode_motion(s,
890
45906
                                        s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
891
                                        s->f_code);
892
45906
                    s->last_mv[0][i][0] = s->mv[0][i][0];
893
45906
                    s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
894
                }
895
22953
                s->mv_bits += get_bits_diff(s);
896
            }
897
543728
            if (cbp) {
898
476942
                if (s->chroma_y_shift) {
899
401019
                    put_bits(&s->pb,
900
401019
                             ff_mpeg12_mbPatTable[cbp][1],
901
401019
                             ff_mpeg12_mbPatTable[cbp][0]);
902
                } else {
903
75923
                    put_bits(&s->pb,
904
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
905
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
906
75923
                    put_sbits(&s->pb, 2, cbp);
907
                }
908
            }
909
543728
            s->f_count++;
910
        } else {
911
581344
            if (s->mv_type == MV_TYPE_16X16) {
912
486295
                if (cbp) {                      // With coded bloc pattern
913
314569
                    if (s->dquant) {
914
55606
                        if (s->mv_dir == MV_DIR_FORWARD)
915
12773
                            put_mb_modes(s, 6, 3, 1, 0);
916
                        else
917
42833
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
918
55606
                        put_qscale(s);
919
                    } else {
920
258963
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
921
                    }
922
                } else {                        // No coded bloc pattern
923
171726
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
924
171726
                    if (!s->frame_pred_frame_dct)
925
78149
                        put_bits(&s->pb, 2, 2); /* motion_type: frame */
926
171726
                    s->qscale -= s->dquant;
927
                }
928
486295
                s->misc_bits += get_bits_diff(s);
929
486295
                if (s->mv_dir & MV_DIR_FORWARD) {
930
347991
                    mpeg1_encode_motion(s,
931
347991
                                        s->mv[0][0][0] - s->last_mv[0][0][0],
932
                                        s->f_code);
933
347991
                    mpeg1_encode_motion(s,
934
347991
                                        s->mv[0][0][1] - s->last_mv[0][0][1],
935
                                        s->f_code);
936
347991
                    s->last_mv[0][0][0] =
937
347991
                    s->last_mv[0][1][0] = s->mv[0][0][0];
938
347991
                    s->last_mv[0][0][1] =
939
347991
                    s->last_mv[0][1][1] = s->mv[0][0][1];
940
347991
                    s->f_count++;
941
                }
942
486295
                if (s->mv_dir & MV_DIR_BACKWARD) {
943
366304
                    mpeg1_encode_motion(s,
944
366304
                                        s->mv[1][0][0] - s->last_mv[1][0][0],
945
                                        s->b_code);
946
366304
                    mpeg1_encode_motion(s,
947
366304
                                        s->mv[1][0][1] - s->last_mv[1][0][1],
948
                                        s->b_code);
949
366304
                    s->last_mv[1][0][0] =
950
366304
                    s->last_mv[1][1][0] = s->mv[1][0][0];
951
366304
                    s->last_mv[1][0][1] =
952
366304
                    s->last_mv[1][1][1] = s->mv[1][0][1];
953
366304
                    s->b_count++;
954
                }
955
            } else {
956
                av_assert2(s->mv_type == MV_TYPE_FIELD);
957
                av_assert2(!s->frame_pred_frame_dct);
958
95049
                if (cbp) {                      // With coded bloc pattern
959
74532
                    if (s->dquant) {
960
                        if (s->mv_dir == MV_DIR_FORWARD)
961
                            put_mb_modes(s, 6, 3, 1, 1);
962
                        else
963
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
964
                        put_qscale(s);
965
                    } else {
966
74532
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
967
                    }
968
                } else {                        // No coded bloc pattern
969
20517
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
970
20517
                    put_bits(&s->pb, 2, 1);     /* motion_type: field */
971
20517
                    s->qscale -= s->dquant;
972
                }
973
95049
                s->misc_bits += get_bits_diff(s);
974
95049
                if (s->mv_dir & MV_DIR_FORWARD) {
975
182619
                    for (i = 0; i < 2; i++) {
976
121746
                        put_bits(&s->pb, 1, s->field_select[0][i]);
977
121746
                        mpeg1_encode_motion(s,
978
121746
                                            s->mv[0][i][0] - s->last_mv[0][i][0],
979
                                            s->f_code);
980
121746
                        mpeg1_encode_motion(s,
981
121746
                                            s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
982
                                            s->f_code);
983
121746
                        s->last_mv[0][i][0] = s->mv[0][i][0];
984
121746
                        s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
985
                    }
986
60873
                    s->f_count++;
987
                }
988
95049
                if (s->mv_dir & MV_DIR_BACKWARD) {
989
183525
                    for (i = 0; i < 2; i++) {
990
122350
                        put_bits(&s->pb, 1, s->field_select[1][i]);
991
122350
                        mpeg1_encode_motion(s,
992
122350
                                            s->mv[1][i][0] - s->last_mv[1][i][0],
993
                                            s->b_code);
994
122350
                        mpeg1_encode_motion(s,
995
122350
                                            s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
996
                                            s->b_code);
997
122350
                        s->last_mv[1][i][0] = s->mv[1][i][0];
998
122350
                        s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
999
                    }
1000
61175
                    s->b_count++;
1001
                }
1002
            }
1003
581344
            s->mv_bits += get_bits_diff(s);
1004
581344
            if (cbp) {
1005
389101
                if (s->chroma_y_shift) {
1006
206508
                    put_bits(&s->pb,
1007
206508
                             ff_mpeg12_mbPatTable[cbp][1],
1008
206508
                             ff_mpeg12_mbPatTable[cbp][0]);
1009
                } else {
1010
182593
                    put_bits(&s->pb,
1011
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
1012
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
1013
182593
                    put_sbits(&s->pb, 2, cbp);
1014
                }
1015
            }
1016
        }
1017
12161611
        for (i = 0; i < mb_block_count; i++)
1018
10607810
            if (cbp & (1 << (mb_block_count - 1 - i)))
1019
6384584
                mpeg1_encode_block(s, block[i], i);
1020
1553801
        s->mb_skip_run = 0;
1021
1553801
        if (s->mb_intra)
1022
428729
            s->i_tex_bits += get_bits_diff(s);
1023
        else
1024
1125072
            s->p_tex_bits += get_bits_diff(s);
1025
    }
1026
1567917
}
1027
1028
1567917
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
1029
                        int motion_x, int motion_y)
1030
{
1031
1567917
    if (s->chroma_format == CHROMA_420)
1032
924802
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
1033
    else
1034
643115
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
1035
1567917
}
1036
1037
48
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
1038
{
1039
    static int done = 0;
1040
1041
48
    ff_mpeg12_common_init(s);
1042
1043
48
    if (!done) {
1044
        int f_code;
1045
        int mv;
1046
        int i;
1047
1048
48
        done = 1;
1049
48
        ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
1050
48
        ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
1051
1052
3120
        for (i = 0; i < 64; i++) {
1053
3072
            mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1054
3072
            mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1055
        }
1056
1057
48
        init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1058
48
        if (s->intra_vlc_format)
1059
13
            init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1060
1061
        /* build unified dc encoding tables */
1062
24576
        for (i = -255; i < 256; i++) {
1063
            int adiff, index;
1064
            int bits, code;
1065
24528
            int diff = i;
1066
1067
24528
            adiff = FFABS(diff);
1068
24528
            if (diff < 0)
1069
12240
                diff--;
1070
24528
            index = av_log2(2 * adiff);
1071
1072
24528
            bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1073
24528
            code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1074
24528
                    av_mod_uintp2(diff, index);
1075
24528
            mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1076
1077
24528
            bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1078
24528
            code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1079
24528
                    av_mod_uintp2(diff, index);
1080
24528
            mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1081
        }
1082
1083
384
        for (f_code = 1; f_code <= MAX_FCODE; f_code++)
1084
5505696
            for (mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1085
                int len;
1086
1087
5505360
                if (mv == 0) {
1088
336
                    len = ff_mpeg12_mbMotionVectorTable[0][1];
1089
                } else {
1090
                    int val, bit_size, code;
1091
1092
5505024
                    bit_size = f_code - 1;
1093
1094
5505024
                    val = mv;
1095
5505024
                    if (val < 0)
1096
2752512
                        val = -val;
1097
5505024
                    val--;
1098
5505024
                    code = (val >> bit_size) + 1;
1099
5505024
                    if (code < 17)
1100
195072
                        len = ff_mpeg12_mbMotionVectorTable[code][1] +
1101
                              1 + bit_size;
1102
                    else
1103
5309952
                        len = ff_mpeg12_mbMotionVectorTable[16][1] +
1104
                              2 + bit_size;
1105
                }
1106
1107
5505360
                mv_penalty[f_code][mv + MAX_DMV] = len;
1108
            }
1109
1110
1111
384
        for (f_code = MAX_FCODE; f_code > 0; f_code--)
1112
195408
            for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
1113
195072
                fcode_tab[mv + MAX_MV] = f_code;
1114
    }
1115
48
    s->me.mv_penalty = mv_penalty;
1116
48
    s->fcode_tab     = fcode_tab;
1117
48
    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1118
11
        s->min_qcoeff = -255;
1119
11
        s->max_qcoeff = 255;
1120
    } else {
1121
37
        s->min_qcoeff = -2047;
1122
37
        s->max_qcoeff = 2047;
1123
    }
1124
48
    if (s->intra_vlc_format) {
1125
13
        s->intra_ac_vlc_length      =
1126
13
        s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1127
    } else {
1128
35
        s->intra_ac_vlc_length      =
1129
35
        s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1130
    }
1131
48
    s->inter_ac_vlc_length      =
1132
48
    s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1133
48
}
1134
1135
#define OFFSET(x) offsetof(MpegEncContext, x)
1136
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1137
#define COMMON_OPTS                                                           \
1138
    { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.",   \
1139
      OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE },\
1140
    { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
1141
      OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1142
    { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1143
      OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1144
    { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1145
      OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1146
    { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \
1147
      OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \
1148
1149
static const AVOption mpeg1_options[] = {
1150
    COMMON_OPTS
1151
    FF_MPV_COMMON_OPTS
1152
    { NULL },
1153
};
1154
1155
static const AVOption mpeg2_options[] = {
1156
    COMMON_OPTS
1157
    { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1158
    { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1159
    { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1160
    {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1161
    {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1162
    {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1163
    { "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" },
1164
    {     "component",    NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_COMPONENT  },  0, 0, VE, "video_format" },
1165
    {     "pal",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_PAL        },  0, 0, VE, "video_format" },
1166
    {     "ntsc",         NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_NTSC       },  0, 0, VE, "video_format" },
1167
    {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
1168
    {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
1169
    {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
1170
#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "avctx.level"
1171
    { LEVEL("high",     4) },
1172
    { LEVEL("high1440", 6) },
1173
    { LEVEL("main",     8) },
1174
    { LEVEL("low",     10) },
1175
#undef LEVEL
1176
    FF_MPV_COMMON_OPTS
1177
    FF_MPEG2_PROFILE_OPTS
1178
    { NULL },
1179
};
1180
1181
#define mpeg12_class(x)                                 \
1182
static const AVClass mpeg ## x ## _class = {            \
1183
    .class_name = "mpeg" # x "video encoder",           \
1184
    .item_name  = av_default_item_name,                 \
1185
    .option     = mpeg ## x ## _options,                \
1186
    .version    = LIBAVUTIL_VERSION_INT,                \
1187
};
1188
1189
mpeg12_class(1)
1190
mpeg12_class(2)
1191
1192
AVCodec ff_mpeg1video_encoder = {
1193
    .name                 = "mpeg1video",
1194
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1195
    .type                 = AVMEDIA_TYPE_VIDEO,
1196
    .id                   = AV_CODEC_ID_MPEG1VIDEO,
1197
    .priv_data_size       = sizeof(MpegEncContext),
1198
    .init                 = encode_init,
1199
    .encode2              = ff_mpv_encode_picture,
1200
    .close                = ff_mpv_encode_end,
1201
    .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1202
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1203
                                                           AV_PIX_FMT_NONE },
1204
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1205
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1206
    .priv_class           = &mpeg1_class,
1207
};
1208
1209
AVCodec ff_mpeg2video_encoder = {
1210
    .name                 = "mpeg2video",
1211
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1212
    .type                 = AVMEDIA_TYPE_VIDEO,
1213
    .id                   = AV_CODEC_ID_MPEG2VIDEO,
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_mpeg2_frame_rate_tab,
1219
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1220
                                                           AV_PIX_FMT_YUV422P,
1221
                                                           AV_PIX_FMT_NONE },
1222
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1223
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1224
    .priv_class           = &mpeg2_class,
1225
};