GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/mpeg12enc.c Lines: 584 683 85.5 %
Date: 2019-11-18 18:00:01 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
45
static const uint8_t svcd_scan_offset_placeholder[] = {
46
    0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
47
    0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
48
};
49
50
static uint8_t mv_penalty[MAX_FCODE + 1][MAX_DMV * 2 + 1];
51
static uint8_t fcode_tab[MAX_MV * 2 + 1];
52
53
static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2];
54
static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2];
55
56
/* simple include everything table for dc, first byte is bits
57
 * number next 3 are code */
58
static uint32_t mpeg1_lum_dc_uni[512];
59
static uint32_t mpeg1_chr_dc_uni[512];
60
61
static uint8_t mpeg1_index_run[2][64];
62
static int8_t  mpeg1_max_level[2][64];
63
64
#define A53_MAX_CC_COUNT 0x1f
65
66
61
static av_cold void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len)
67
{
68
    int i;
69
70
7869
    for (i = 0; i < 128; i++) {
71
7808
        int level = i - 64;
72
        int run;
73
7808
        if (!level)
74
61
            continue;
75
503555
        for (run = 0; run < 64; run++) {
76
            int len, code;
77
495808
            int alevel = FFABS(level);
78
79
495808
            if (alevel > rl->max_level[0][run])
80
482266
                code = 111;                         /* rl->n */
81
            else
82
13542
                code = rl->index_run[0][run] + alevel - 1;
83
84
495808
            if (code < 111) {                       /* rl->n */
85
                /* length of VLC and sign */
86
13542
                len = rl->table_vlc[code][1] + 1;
87
            } else {
88
482266
                len = rl->table_vlc[111 /* rl->n */][1] + 6;
89
90
482266
                if (alevel < 128)
91
482266
                    len += 8;
92
                else
93
                    len += 16;
94
            }
95
96
495808
            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
97
        }
98
    }
99
61
}
100
101
48
static int find_frame_rate_index(MpegEncContext *s)
102
{
103
    int i;
104
48
    AVRational bestq = (AVRational) {0, 0};
105
    AVRational ext;
106
48
    AVRational target = av_inv_q(s->avctx->time_base);
107
108
432
    for (i = 1; i < 14; i++) {
109

432
        if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
110
            i >= 9)
111
48
            break;
112
113
1920
        for (ext.num=1; ext.num <= 4; ext.num++) {
114
50688
            for (ext.den=1; ext.den <= 32; ext.den++) {
115
49152
                AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
116
117

49152
                if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
118
23608
                    continue;
119
37976
                if (av_gcd(ext.den, ext.num) != 1)
120
12432
                    continue;
121
122
25544
                if (    bestq.num==0
123
25496
                    || av_nearer_q(target, bestq, q) < 0
124

25399
                    || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
125
145
                    bestq               = q;
126
145
                    s->frame_rate_index = i;
127
145
                    s->mpeg2_frame_rate_ext.num = ext.num;
128
145
                    s->mpeg2_frame_rate_ext.den = ext.den;
129
                }
130
            }
131
        }
132
    }
133
134
48
    if (av_cmp_q(target, bestq))
135
        return -1;
136
    else
137
48
        return 0;
138
}
139
140
48
static av_cold int encode_init(AVCodecContext *avctx)
141
{
142
48
    MpegEncContext *s = avctx->priv_data;
143
144
48
    if (ff_mpv_encode_init(avctx) < 0)
145
        return -1;
146
147
48
    if (find_frame_rate_index(s) < 0) {
148
        if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
149
            av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n",
150
                   avctx->time_base.den, avctx->time_base.num);
151
            return -1;
152
        } else {
153
            av_log(avctx, AV_LOG_INFO,
154
                   "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n",
155
                   avctx->time_base.den, avctx->time_base.num);
156
        }
157
    }
158
159
48
    if (avctx->profile == FF_PROFILE_UNKNOWN) {
160
48
        if (avctx->level != FF_LEVEL_UNKNOWN) {
161
            av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
162
            return -1;
163
        }
164
        /* Main or 4:2:2 */
165
48
        avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
166
    }
167
168
48
    if (avctx->level == FF_LEVEL_UNKNOWN) {
169
48
        if (avctx->profile == 0) {                  /* 4:2:2 */
170

5
            if (avctx->width <= 720 && avctx->height <= 608)
171
5
                avctx->level = 5;                   /* Main */
172
            else
173
                avctx->level = 2;                   /* High */
174
        } else {
175

43
            if (avctx->profile != 1 && s->chroma_format != CHROMA_420) {
176
                av_log(avctx, AV_LOG_ERROR,
177
                       "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
178
                return -1;
179
            }
180

43
            if (avctx->width <= 720 && avctx->height <= 576)
181
43
                avctx->level = 8;                   /* Main */
182
            else if (avctx->width <= 1440)
183
                avctx->level = 6;                   /* High 1440 */
184
            else
185
                avctx->level = 4;                   /* High */
186
        }
187
    }
188
189

48
    if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
190
        av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
191
        return AVERROR(EINVAL);
192
    }
193
194
48
    if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
195

48
        if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
196
            av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n"
197
                                        "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
198
            return AVERROR(EINVAL);
199
        }
200
    }
201
202

48
    s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
203
48
    if (s->drop_frame_timecode)
204
        s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
205

48
    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
206
        av_log(avctx, AV_LOG_ERROR,
207
               "Drop frame time code only allowed with 1001/30000 fps\n");
208
        return -1;
209
    }
210
211
#if FF_API_PRIVATE_OPT
212
FF_DISABLE_DEPRECATION_WARNINGS
213
48
    if (avctx->timecode_frame_start)
214
48
        s->timecode_frame_start = avctx->timecode_frame_start;
215
FF_ENABLE_DEPRECATION_WARNINGS
216
#endif
217
218
48
    if (s->tc_opt_str) {
219
6
        AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
220
6
        int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
221
6
        if (ret < 0)
222
            return ret;
223
6
        s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
224
6
        s->timecode_frame_start = s->tc.start;
225
    } else {
226
42
        s->timecode_frame_start = 0; // default is -1
227
    }
228
229
48
    return 0;
230
}
231
232
294050
static void put_header(MpegEncContext *s, int header)
233
{
234
294050
    avpriv_align_put_bits(&s->pb);
235
294050
    put_bits(&s->pb, 16, header >> 16);
236
294050
    put_sbits(&s->pb, 16, header);
237
294050
}
238
239
/* put sequence header if needed */
240
2240
static void mpeg1_encode_sequence_header(MpegEncContext *s)
241
{
242
    unsigned int vbv_buffer_size, fps, v;
243
    int i, constraint_parameter_flag;
244
    uint64_t time_code;
245
2240
    int64_t best_aspect_error = INT64_MAX;
246
2240
    AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
247
248

2240
    if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
249
2240
        aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
250
251
2240
    if (s->current_picture.f->key_frame) {
252
380
        AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
253
254
        /* MPEG-1 header repeated every GOP */
255
380
        put_header(s, SEQ_START_CODE);
256
257
380
        put_sbits(&s->pb, 12, s->width  & 0xFFF);
258
380
        put_sbits(&s->pb, 12, s->height & 0xFFF);
259
260
5700
        for (i = 1; i < 15; i++) {
261
5320
            int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
262

5320
            if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
263
1069
                error -= (1LL<<32) / ff_mpeg1_aspect[i];
264
            else
265
4251
                error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
266
267
5320
            error = FFABS(error);
268
269
5320
            if (error - 2 <= best_aspect_error) {
270
380
                best_aspect_error    = error;
271
380
                s->aspect_ratio_info = i;
272
            }
273
        }
274
275
380
        put_bits(&s->pb, 4, s->aspect_ratio_info);
276
380
        put_bits(&s->pb, 4, s->frame_rate_index);
277
278
380
        if (s->avctx->rc_max_rate) {
279
150
            v = (s->avctx->rc_max_rate + 399) / 400;
280

150
            if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
281
                v = 0x3ffff;
282
        } else {
283
230
            v = 0x3FFFF;
284
        }
285
286
380
        if (s->avctx->rc_buffer_size)
287
150
            vbv_buffer_size = s->avctx->rc_buffer_size;
288
        else
289
            /* VBV calculation: Scaled so that a VCD has the proper
290
             * VBV size of 40 kilobytes */
291
230
            vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
292
380
        vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
293
294
380
        put_sbits(&s->pb, 18, v);
295
380
        put_bits(&s->pb, 1, 1);         // marker
296
380
        put_sbits(&s->pb, 10, vbv_buffer_size);
297
298
380
        constraint_parameter_flag =
299
760
            s->width  <= 768                                    &&
300
380
            s->height <= 576                                    &&
301
230
            s->mb_width * s->mb_height                 <= 396   &&
302
221
            s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
303
215
            framerate.num <= framerate.den * 30                 &&
304
215
            s->avctx->me_range                                  &&
305
            s->avctx->me_range < 128                            &&
306
            vbv_buffer_size <= 20                               &&
307
760
            v <= 1856000 / 400                                  &&
308
            s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
309
310
380
        put_bits(&s->pb, 1, constraint_parameter_flag);
311
312
380
        ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
313
380
        ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
314
315
380
        if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
316
            AVFrameSideData *side_data;
317
327
            int width = s->width;
318
327
            int height = s->height;
319
            int use_seq_disp_ext;
320
321
327
            put_header(s, EXT_START_CODE);
322
327
            put_bits(&s->pb, 4, 1);                 // seq ext
323
324
327
            put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile
325
326
327
            put_bits(&s->pb, 3, s->avctx->profile); // profile
327
327
            put_bits(&s->pb, 4, s->avctx->level);   // level
328
329
327
            put_bits(&s->pb, 1, s->progressive_sequence);
330
327
            put_bits(&s->pb, 2, s->chroma_format);
331
327
            put_bits(&s->pb, 2, s->width  >> 12);
332
327
            put_bits(&s->pb, 2, s->height >> 12);
333
327
            put_bits(&s->pb, 12, v >> 18);          // bitrate ext
334
327
            put_bits(&s->pb, 1, 1);                 // marker
335
327
            put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
336
327
            put_bits(&s->pb, 1, s->low_delay);
337
327
            put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
338
327
            put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
339
340
327
            side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
341
327
            if (side_data) {
342
                AVPanScan *pan_scan = (AVPanScan *)side_data->data;
343
                if (pan_scan->width && pan_scan->height) {
344
                    width = pan_scan->width >> 4;
345
                    height = pan_scan->height >> 4;
346
                }
347
            }
348
349
981
            use_seq_disp_ext = (width != s->width ||
350
327
                                height != s->height ||
351
327
                                s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
352
327
                                s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
353

981
                                s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED ||
354
327
                                s->video_format != VIDEO_FORMAT_UNSPECIFIED);
355
356

327
            if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
357
                put_header(s, EXT_START_CODE);
358
                put_bits(&s->pb, 4, 2);                         // sequence display extension
359
                put_bits(&s->pb, 3, s->video_format);           // video_format
360
                put_bits(&s->pb, 1, 1);                         // colour_description
361
                put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
362
                put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
363
                put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
364
                put_bits(&s->pb, 14, width);                    // display_horizontal_size
365
                put_bits(&s->pb, 1, 1);                         // marker_bit
366
                put_bits(&s->pb, 14, height);                   // display_vertical_size
367
                put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
368
            }
369
        }
370
371
380
        put_header(s, GOP_START_CODE);
372
380
        put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
373
        /* time code: we must convert from the real frame rate to a
374
         * fake MPEG frame rate in case of low frame rate */
375
380
        fps       = (framerate.num + framerate.den / 2) / framerate.den;
376
380
        time_code = s->current_picture_ptr->f->coded_picture_number +
377
380
                    s->timecode_frame_start;
378
379
380
        s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
380
381
380
        av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
382
380
        if (s->drop_frame_timecode)
383
9
            time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
384
385
380
        put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
386
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
387
380
        put_bits(&s->pb, 1, 1);
388
380
        put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
389
380
        put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
390

380
        put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
391
380
        put_bits(&s->pb, 1, 0);                     // broken link
392
    }
393
2240
}
394
395
1553801
static inline void encode_mb_skip_run(MpegEncContext *s, int run)
396
{
397
1622203
    while (run >= 33) {
398
68402
        put_bits(&s->pb, 11, 0x008);
399
68402
        run -= 33;
400
    }
401
1553801
    put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
402
1553801
             ff_mpeg12_mbAddrIncrTable[run][0]);
403
1553801
}
404
405
474731
static av_always_inline void put_qscale(MpegEncContext *s)
406
{
407
474731
    put_bits(&s->pb, 5, s->qscale);
408
474731
}
409
410
288963
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
411
{
412

288963
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
413
        put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
414
        /* slice_vertical_position_extension */
415
        put_bits(&s->pb, 3, s->mb_y >> 7);
416
    } else {
417
288963
        put_header(s, SLICE_MIN_START_CODE + s->mb_y);
418
    }
419
288963
    put_qscale(s);
420
    /* slice extra information */
421
288963
    put_bits(&s->pb, 1, 0);
422
288963
}
423
424
2240
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
425
{
426
    AVFrameSideData *side_data;
427
2240
    mpeg1_encode_sequence_header(s);
428
429
    /* MPEG-1 picture header */
430
2240
    put_header(s, PICTURE_START_CODE);
431
    /* temporal reference */
432
433
    // RAL: s->picture_number instead of s->fake_picture_number
434
2240
    put_bits(&s->pb, 10,
435
2240
             (s->picture_number - s->gop_picture_number) & 0x3ff);
436
2240
    put_bits(&s->pb, 3, s->pict_type);
437
438
2240
    s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
439
2240
    put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
440
441
    // RAL: Forward f_code also needed for B-frames
442
2240
    if (s->pict_type == AV_PICTURE_TYPE_P ||
443
1087
        s->pict_type == AV_PICTURE_TYPE_B) {
444
1860
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
445
1860
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
446
427
            put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
447
        else
448
1433
            put_bits(&s->pb, 3, 7);             /* forward_f_code */
449
    }
450
451
    // RAL: Backward f_code necessary for B-frames
452
2240
    if (s->pict_type == AV_PICTURE_TYPE_B) {
453
707
        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
454
707
        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
455
144
            put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
456
        else
457
563
            put_bits(&s->pb, 3, 7);             /* backward_f_code */
458
    }
459
460
2240
    put_bits(&s->pb, 1, 0);                     /* extra bit picture */
461
462
2240
    s->frame_pred_frame_dct = 1;
463
2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
464
1760
        put_header(s, EXT_START_CODE);
465
1760
        put_bits(&s->pb, 4, 8);                 /* pic ext */
466
1760
        if (s->pict_type == AV_PICTURE_TYPE_P ||
467
890
            s->pict_type == AV_PICTURE_TYPE_B) {
468
1433
            put_bits(&s->pb, 4, s->f_code);
469
1433
            put_bits(&s->pb, 4, s->f_code);
470
        } else {
471
327
            put_bits(&s->pb, 8, 255);
472
        }
473
1760
        if (s->pict_type == AV_PICTURE_TYPE_B) {
474
563
            put_bits(&s->pb, 4, s->b_code);
475
563
            put_bits(&s->pb, 4, s->b_code);
476
        } else {
477
1197
            put_bits(&s->pb, 8, 255);
478
        }
479
1760
        put_bits(&s->pb, 2, s->intra_dc_precision);
480
481
1760
        av_assert0(s->picture_structure == PICT_FRAME);
482
1760
        put_bits(&s->pb, 2, s->picture_structure);
483
1760
        if (s->progressive_sequence)
484
810
            put_bits(&s->pb, 1, 0);             /* no repeat */
485
        else
486
950
            put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
487
        /* XXX: optimize the generation of this flag with entropy measures */
488
1760
        s->frame_pred_frame_dct = s->progressive_sequence;
489
490
1760
        put_bits(&s->pb, 1, s->frame_pred_frame_dct);
491
1760
        put_bits(&s->pb, 1, s->concealment_motion_vectors);
492
1760
        put_bits(&s->pb, 1, s->q_scale_type);
493
1760
        put_bits(&s->pb, 1, s->intra_vlc_format);
494
1760
        put_bits(&s->pb, 1, s->alternate_scan);
495
1760
        put_bits(&s->pb, 1, s->repeat_first_field);
496
1760
        s->progressive_frame = s->progressive_sequence;
497
        /* chroma_420_type */
498
3170
        put_bits(&s->pb, 1, s->chroma_format ==
499
1410
                            CHROMA_420 ? s->progressive_frame : 0);
500
1760
        put_bits(&s->pb, 1, s->progressive_frame);
501
1760
        put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
502
    }
503
2240
    if (s->scan_offset) {
504
        int i;
505
506
        put_header(s, USER_START_CODE);
507
        for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
508
            put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
509
    }
510
2240
    side_data = av_frame_get_side_data(s->current_picture_ptr->f,
511
                                       AV_FRAME_DATA_STEREO3D);
512
2240
    if (side_data) {
513
        AVStereo3D *stereo = (AVStereo3D *)side_data->data;
514
        uint8_t fpa_type;
515
516
        switch (stereo->type) {
517
        case AV_STEREO3D_SIDEBYSIDE:
518
            fpa_type = 0x03;
519
            break;
520
        case AV_STEREO3D_TOPBOTTOM:
521
            fpa_type = 0x04;
522
            break;
523
        case AV_STEREO3D_2D:
524
            fpa_type = 0x08;
525
            break;
526
        case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
527
            fpa_type = 0x23;
528
            break;
529
        default:
530
            fpa_type = 0;
531
            break;
532
        }
533
534
        if (fpa_type != 0) {
535
            put_header(s, USER_START_CODE);
536
            put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
537
            put_bits(&s->pb, 8, 'P');
538
            put_bits(&s->pb, 8, '3');
539
            put_bits(&s->pb, 8, 'D');
540
            put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
541
542
            put_bits(&s->pb, 1, 1);     // reserved_bit
543
            put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
544
            put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
545
            put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
546
        }
547
    }
548
549

2240
    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->a53_cc) {
550
1760
        side_data = av_frame_get_side_data(s->current_picture_ptr->f,
551
            AV_FRAME_DATA_A53_CC);
552
1760
        if (side_data) {
553
            if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) {
554
                int i = 0;
555
556
                put_header (s, USER_START_CODE);
557
558
                put_bits(&s->pb, 8, 'G');                   // user_identifier
559
                put_bits(&s->pb, 8, 'A');
560
                put_bits(&s->pb, 8, '9');
561
                put_bits(&s->pb, 8, '4');
562
                put_bits(&s->pb, 8, 3);                     // user_data_type_code
563
                put_bits(&s->pb, 8,
564
                    (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
565
                put_bits(&s->pb, 8, 0xff);                  // em_data
566
567
                for (i = 0; i < side_data->size; i++)
568
                    put_bits(&s->pb, 8, side_data->data[i]);
569
570
                put_bits(&s->pb, 8, 0xff);                  // marker_bits
571
            } else {
572
                av_log(s->avctx, AV_LOG_WARNING,
573
                    "Warning Closed Caption size (%d) can not exceed 93 bytes "
574
                    "and must be a multiple of 3\n", side_data->size);
575
            }
576
        }
577
    }
578
579
2240
    s->mb_y = 0;
580
2240
    ff_mpeg1_encode_slice_header(s);
581
2240
}
582
583
1294772
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
584
                                int has_mv, int field_motion)
585
{
586
1294772
    put_bits(&s->pb, n, bits);
587
1294772
    if (!s->frame_pred_frame_dct) {
588
702603
        if (has_mv)
589
            /* motion_type: frame/field */
590
365122
            put_bits(&s->pb, 2, 2 - field_motion);
591
702603
        put_bits(&s->pb, 1, s->interlaced_dct);
592
    }
593
1294772
}
594
595
// RAL: Parameter added: f_or_b_code
596
2963288
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
597
{
598
2963288
    if (val == 0) {
599
        /* zero vector */
600
1169562
        put_bits(&s->pb,
601
1169562
                 ff_mpeg12_mbMotionVectorTable[0][1],
602
1169562
                 ff_mpeg12_mbMotionVectorTable[0][0]);
603
    } else {
604
        int code, sign, bits;
605
1793726
        int bit_size = f_or_b_code - 1;
606
1793726
        int range    = 1 << bit_size;
607
        /* modulo encoding */
608
1793726
        val = sign_extend(val, 5 + bit_size);
609
610
1793726
        if (val >= 0) {
611
874482
            val--;
612
874482
            code = (val >> bit_size) + 1;
613
874482
            bits = val & (range - 1);
614
874482
            sign = 0;
615
        } else {
616
919244
            val = -val;
617
919244
            val--;
618
919244
            code = (val >> bit_size) + 1;
619
919244
            bits = val & (range - 1);
620
919244
            sign = 1;
621
        }
622
623
        av_assert2(code > 0 && code <= 16);
624
625
1793726
        put_bits(&s->pb,
626
1793726
                 ff_mpeg12_mbMotionVectorTable[code][1],
627
1793726
                 ff_mpeg12_mbMotionVectorTable[code][0]);
628
629
1793726
        put_bits(&s->pb, 1, sign);
630
1793726
        if (bit_size > 0)
631
1248476
            put_bits(&s->pb, bit_size, bits);
632
    }
633
2963288
}
634
635
3163394
static inline void encode_dc(MpegEncContext *s, int diff, int component)
636
{
637
3163394
    unsigned int diff_u = diff + 255;
638
3163394
    if (diff_u >= 511) {
639
        int index;
640
641
162210
        if (diff < 0) {
642
113286
            index = av_log2_16bit(-2 * diff);
643
113286
            diff--;
644
        } else {
645
48924
            index = av_log2_16bit(2 * diff);
646
        }
647
162210
        if (component == 0)
648
91380
            put_bits(&s->pb,
649
91380
                     ff_mpeg12_vlc_dc_lum_bits[index] + index,
650
91380
                     (ff_mpeg12_vlc_dc_lum_code[index] << index) +
651
91380
                     av_mod_uintp2(diff, index));
652
        else
653
70830
            put_bits(&s->pb,
654
70830
                     ff_mpeg12_vlc_dc_chroma_bits[index] + index,
655
70830
                     (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
656
70830
                     av_mod_uintp2(diff, index));
657
    } else {
658
3001184
        if (component == 0)
659
1623536
            put_bits(&s->pb,
660
1623536
                     mpeg1_lum_dc_uni[diff + 255] & 0xFF,
661
1623536
                     mpeg1_lum_dc_uni[diff + 255] >> 8);
662
        else
663
1377648
            put_bits(&s->pb,
664
1377648
                     mpeg1_chr_dc_uni[diff + 255] & 0xFF,
665
1377648
                     mpeg1_chr_dc_uni[diff + 255] >> 8);
666
    }
667
3163394
}
668
669
6384584
static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
670
{
671
    int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
672
    int code, component;
673
6384584
    const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
674
675
6384584
    last_index = s->block_last_index[n];
676
677
    /* DC coef */
678
6384584
    if (s->mb_intra) {
679
3163394
        component = (n <= 3 ? 0 : (n & 1) + 1);
680
3163394
        dc        = block[0];                   /* overflow is impossible */
681
3163394
        diff      = dc - s->last_dc[component];
682
3163394
        encode_dc(s, diff, component);
683
3163394
        s->last_dc[component] = dc;
684
3163394
        i = 1;
685
3163394
        if (s->intra_vlc_format)
686
2643692
            table_vlc = ff_rl_mpeg2.table_vlc;
687
    } else {
688
        /* encode the first coefficient: needs to be done here because
689
         * it is handled slightly differently */
690
3221190
        level = block[0];
691
3221190
        if (abs(level) == 1) {
692
942621
            code = ((uint32_t)level >> 31);     /* the sign bit */
693
942621
            put_bits(&s->pb, 2, code | 0x02);
694
942621
            i = 1;
695
        } else {
696
2278569
            i             = 0;
697
2278569
            last_non_zero = -1;
698
2278569
            goto next_coef;
699
        }
700
    }
701
702
    /* now quantify & encode AC coefs */
703
4106015
    last_non_zero = i - 1;
704
705
162593954
    for (; i <= last_index; i++) {
706
156209370
        j     = s->intra_scantable.permutated[i];
707
156209370
        level = block[j];
708
709
158487939
next_coef:
710
        /* encode using VLC */
711
158487939
        if (level != 0) {
712
65399778
            run = i - last_non_zero - 1;
713
714
65399778
            alevel = level;
715
65399778
            MASK_ABS(sign, alevel);
716
65399778
            sign &= 1;
717
718
65399778
            if (alevel <= mpeg1_max_level[0][run]) {
719
63333400
                code = mpeg1_index_run[0][run] + alevel - 1;
720
                /* store the VLC & sign at once */
721
63333400
                put_bits(&s->pb, table_vlc[code][1] + 1,
722
63333400
                         (table_vlc[code][0] << 1) + sign);
723
            } else {
724
                /* escape seems to be pretty rare <5% so I do not optimize it */
725
2066378
                put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
726
                /* escape: only clip in this case */
727
2066378
                put_bits(&s->pb, 6, run);
728
2066378
                if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
729
82631
                    if (alevel < 128) {
730
82631
                        put_sbits(&s->pb, 8, level);
731
                    } else {
732
                        if (level < 0)
733
                            put_bits(&s->pb, 16, 0x8001 + level + 255);
734
                        else
735
                            put_sbits(&s->pb, 16, level);
736
                    }
737
                } else {
738
1983747
                    put_sbits(&s->pb, 12, level);
739
                }
740
            }
741
65399778
            last_non_zero = i;
742
        }
743
    }
744
    /* end of block */
745
6384584
    put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
746
6384584
}
747
748
1567917
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
749
                                                      int16_t block[8][64],
750
                                                      int motion_x, int motion_y,
751
                                                      int mb_block_count)
752
{
753
    int i, cbp;
754
1567917
    const int mb_x     = s->mb_x;
755
1567917
    const int mb_y     = s->mb_y;
756

1567917
    const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
757
758
    /* compute cbp */
759
1567917
    cbp = 0;
760
12261649
    for (i = 0; i < mb_block_count; i++)
761
10693732
        if (s->block_last_index[i] >= 0)
762
6384584
            cbp |= 1 << (mb_block_count - 1 - i);
763
764

1567917
    if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
765
245714
        (mb_x != s->mb_width - 1 ||
766

7348
         (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
767

238908
        ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
768

228671
         (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
769
21548
          (((s->mv_dir & MV_DIR_FORWARD)
770
20583
            ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
771

43096
               (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
772
21548
           ((s->mv_dir & MV_DIR_BACKWARD)
773
20991
            ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
774
21548
               (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
775
14116
        s->mb_skip_run++;
776
14116
        s->qscale -= s->dquant;
777
14116
        s->skip_count++;
778
14116
        s->misc_bits++;
779
14116
        s->last_bits++;
780
14116
        if (s->pict_type == AV_PICTURE_TYPE_P) {
781
10237
            s->last_mv[0][0][0] =
782
10237
            s->last_mv[0][0][1] =
783
10237
            s->last_mv[0][1][0] =
784
10237
            s->last_mv[0][1][1] = 0;
785
        }
786
    } else {
787
1553801
        if (first_mb) {
788
316054
            av_assert0(s->mb_skip_run == 0);
789
316054
            encode_mb_skip_run(s, s->mb_x);
790
        } else {
791
1237747
            encode_mb_skip_run(s, s->mb_skip_run);
792
        }
793
794
1553801
        if (s->pict_type == AV_PICTURE_TYPE_I) {
795

377814
            if (s->dquant && cbp) {
796
                /* macroblock_type: macroblock_quant = 1 */
797
43950
                put_mb_modes(s, 2, 1, 0, 0);
798
43950
                put_qscale(s);
799
            } else {
800
                /* macroblock_type: macroblock_quant = 0 */
801
333864
                put_mb_modes(s, 1, 1, 0, 0);
802
333864
                s->qscale -= s->dquant;
803
            }
804
377814
            s->misc_bits += get_bits_diff(s);
805
377814
            s->i_count++;
806
1175987
        } else if (s->mb_intra) {
807

50915
            if (s->dquant && cbp) {
808
11248
                put_mb_modes(s, 6, 0x01, 0, 0);
809
11248
                put_qscale(s);
810
            } else {
811
39667
                put_mb_modes(s, 5, 0x03, 0, 0);
812
39667
                s->qscale -= s->dquant;
813
            }
814
50915
            s->misc_bits += get_bits_diff(s);
815
50915
            s->i_count++;
816
50915
            memset(s->last_mv, 0, sizeof(s->last_mv));
817
1125072
        } else if (s->pict_type == AV_PICTURE_TYPE_P) {
818
543728
            if (s->mv_type == MV_TYPE_16X16) {
819
520775
                if (cbp != 0) {
820
455483
                    if ((motion_x | motion_y) == 0) {
821
43428
                        if (s->dquant) {
822
                            /* macroblock_pattern & quant */
823
4208
                            put_mb_modes(s, 5, 1, 0, 0);
824
4208
                            put_qscale(s);
825
                        } else {
826
                            /* macroblock_pattern only */
827
39220
                            put_mb_modes(s, 2, 1, 0, 0);
828
                        }
829
43428
                        s->misc_bits += get_bits_diff(s);
830
                    } else {
831
412055
                        if (s->dquant) {
832
70756
                            put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
833
70756
                            put_qscale(s);
834
                        } else {
835
341299
                            put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
836
                        }
837
412055
                        s->misc_bits += get_bits_diff(s);
838
                        // RAL: f_code parameter added
839
412055
                        mpeg1_encode_motion(s,
840
412055
                                            motion_x - s->last_mv[0][0][0],
841
                                            s->f_code);
842
                        // RAL: f_code parameter added
843
412055
                        mpeg1_encode_motion(s,
844
412055
                                            motion_y - s->last_mv[0][0][1],
845
                                            s->f_code);
846
412055
                        s->mv_bits += get_bits_diff(s);
847
                    }
848
                } else {
849
65292
                    put_bits(&s->pb, 3, 1);         /* motion only */
850
65292
                    if (!s->frame_pred_frame_dct)
851
16441
                        put_bits(&s->pb, 2, 2);     /* motion_type: frame */
852
65292
                    s->misc_bits += get_bits_diff(s);
853
                    // RAL: f_code parameter added
854
65292
                    mpeg1_encode_motion(s,
855
65292
                                        motion_x - s->last_mv[0][0][0],
856
                                        s->f_code);
857
                    // RAL: f_code parameter added
858
65292
                    mpeg1_encode_motion(s,
859
65292
                                        motion_y - s->last_mv[0][0][1],
860
                                        s->f_code);
861
65292
                    s->qscale  -= s->dquant;
862
65292
                    s->mv_bits += get_bits_diff(s);
863
                }
864
520775
                s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
865
520775
                s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
866
            } else {
867
                av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
868
869
22953
                if (cbp) {
870
21459
                    if (s->dquant) {
871
                        put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
872
                        put_qscale(s);
873
                    } else {
874
21459
                        put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
875
                    }
876
                } else {
877
1494
                    put_bits(&s->pb, 3, 1);             /* motion only */
878
1494
                    put_bits(&s->pb, 2, 1);             /* motion_type: field */
879
1494
                    s->qscale -= s->dquant;
880
                }
881
22953
                s->misc_bits += get_bits_diff(s);
882
68859
                for (i = 0; i < 2; i++) {
883
45906
                    put_bits(&s->pb, 1, s->field_select[0][i]);
884
45906
                    mpeg1_encode_motion(s,
885
45906
                                        s->mv[0][i][0] - s->last_mv[0][i][0],
886
                                        s->f_code);
887
45906
                    mpeg1_encode_motion(s,
888
45906
                                        s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
889
                                        s->f_code);
890
45906
                    s->last_mv[0][i][0] = s->mv[0][i][0];
891
45906
                    s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
892
                }
893
22953
                s->mv_bits += get_bits_diff(s);
894
            }
895
543728
            if (cbp) {
896
476942
                if (s->chroma_y_shift) {
897
401019
                    put_bits(&s->pb,
898
401019
                             ff_mpeg12_mbPatTable[cbp][1],
899
401019
                             ff_mpeg12_mbPatTable[cbp][0]);
900
                } else {
901
75923
                    put_bits(&s->pb,
902
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
903
75923
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
904
75923
                    put_sbits(&s->pb, 2, cbp);
905
                }
906
            }
907
543728
            s->f_count++;
908
        } else {
909
581344
            if (s->mv_type == MV_TYPE_16X16) {
910
486295
                if (cbp) {                      // With coded bloc pattern
911
314569
                    if (s->dquant) {
912
55606
                        if (s->mv_dir == MV_DIR_FORWARD)
913
12773
                            put_mb_modes(s, 6, 3, 1, 0);
914
                        else
915
42833
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
916
55606
                        put_qscale(s);
917
                    } else {
918
258963
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
919
                    }
920
                } else {                        // No coded bloc pattern
921
171726
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
922
171726
                    if (!s->frame_pred_frame_dct)
923
78149
                        put_bits(&s->pb, 2, 2); /* motion_type: frame */
924
171726
                    s->qscale -= s->dquant;
925
                }
926
486295
                s->misc_bits += get_bits_diff(s);
927
486295
                if (s->mv_dir & MV_DIR_FORWARD) {
928
347991
                    mpeg1_encode_motion(s,
929
347991
                                        s->mv[0][0][0] - s->last_mv[0][0][0],
930
                                        s->f_code);
931
347991
                    mpeg1_encode_motion(s,
932
347991
                                        s->mv[0][0][1] - s->last_mv[0][0][1],
933
                                        s->f_code);
934
347991
                    s->last_mv[0][0][0] =
935
347991
                    s->last_mv[0][1][0] = s->mv[0][0][0];
936
347991
                    s->last_mv[0][0][1] =
937
347991
                    s->last_mv[0][1][1] = s->mv[0][0][1];
938
347991
                    s->f_count++;
939
                }
940
486295
                if (s->mv_dir & MV_DIR_BACKWARD) {
941
366304
                    mpeg1_encode_motion(s,
942
366304
                                        s->mv[1][0][0] - s->last_mv[1][0][0],
943
                                        s->b_code);
944
366304
                    mpeg1_encode_motion(s,
945
366304
                                        s->mv[1][0][1] - s->last_mv[1][0][1],
946
                                        s->b_code);
947
366304
                    s->last_mv[1][0][0] =
948
366304
                    s->last_mv[1][1][0] = s->mv[1][0][0];
949
366304
                    s->last_mv[1][0][1] =
950
366304
                    s->last_mv[1][1][1] = s->mv[1][0][1];
951
366304
                    s->b_count++;
952
                }
953
            } else {
954
                av_assert2(s->mv_type == MV_TYPE_FIELD);
955
                av_assert2(!s->frame_pred_frame_dct);
956
95049
                if (cbp) {                      // With coded bloc pattern
957
74532
                    if (s->dquant) {
958
                        if (s->mv_dir == MV_DIR_FORWARD)
959
                            put_mb_modes(s, 6, 3, 1, 1);
960
                        else
961
                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
962
                        put_qscale(s);
963
                    } else {
964
74532
                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
965
                    }
966
                } else {                        // No coded bloc pattern
967
20517
                    put_bits(&s->pb, 5 - s->mv_dir, 2);
968
20517
                    put_bits(&s->pb, 2, 1);     /* motion_type: field */
969
20517
                    s->qscale -= s->dquant;
970
                }
971
95049
                s->misc_bits += get_bits_diff(s);
972
95049
                if (s->mv_dir & MV_DIR_FORWARD) {
973
182619
                    for (i = 0; i < 2; i++) {
974
121746
                        put_bits(&s->pb, 1, s->field_select[0][i]);
975
121746
                        mpeg1_encode_motion(s,
976
121746
                                            s->mv[0][i][0] - s->last_mv[0][i][0],
977
                                            s->f_code);
978
121746
                        mpeg1_encode_motion(s,
979
121746
                                            s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
980
                                            s->f_code);
981
121746
                        s->last_mv[0][i][0] = s->mv[0][i][0];
982
121746
                        s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
983
                    }
984
60873
                    s->f_count++;
985
                }
986
95049
                if (s->mv_dir & MV_DIR_BACKWARD) {
987
183525
                    for (i = 0; i < 2; i++) {
988
122350
                        put_bits(&s->pb, 1, s->field_select[1][i]);
989
122350
                        mpeg1_encode_motion(s,
990
122350
                                            s->mv[1][i][0] - s->last_mv[1][i][0],
991
                                            s->b_code);
992
122350
                        mpeg1_encode_motion(s,
993
122350
                                            s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
994
                                            s->b_code);
995
122350
                        s->last_mv[1][i][0] = s->mv[1][i][0];
996
122350
                        s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
997
                    }
998
61175
                    s->b_count++;
999
                }
1000
            }
1001
581344
            s->mv_bits += get_bits_diff(s);
1002
581344
            if (cbp) {
1003
389101
                if (s->chroma_y_shift) {
1004
206508
                    put_bits(&s->pb,
1005
206508
                             ff_mpeg12_mbPatTable[cbp][1],
1006
206508
                             ff_mpeg12_mbPatTable[cbp][0]);
1007
                } else {
1008
182593
                    put_bits(&s->pb,
1009
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][1],
1010
182593
                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
1011
182593
                    put_sbits(&s->pb, 2, cbp);
1012
                }
1013
            }
1014
        }
1015
12161611
        for (i = 0; i < mb_block_count; i++)
1016
10607810
            if (cbp & (1 << (mb_block_count - 1 - i)))
1017
6384584
                mpeg1_encode_block(s, block[i], i);
1018
1553801
        s->mb_skip_run = 0;
1019
1553801
        if (s->mb_intra)
1020
428729
            s->i_tex_bits += get_bits_diff(s);
1021
        else
1022
1125072
            s->p_tex_bits += get_bits_diff(s);
1023
    }
1024
1567917
}
1025
1026
1567917
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
1027
                        int motion_x, int motion_y)
1028
{
1029
1567917
    if (s->chroma_format == CHROMA_420)
1030
924802
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
1031
    else
1032
643115
        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
1033
1567917
}
1034
1035
48
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
1036
{
1037
    static int done = 0;
1038
1039
48
    ff_mpeg12_common_init(s);
1040
1041
48
    if (!done) {
1042
        int f_code;
1043
        int mv;
1044
        int i;
1045
1046
48
        done = 1;
1047
48
        ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
1048
48
        ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
1049
1050
3120
        for (i = 0; i < 64; i++) {
1051
3072
            mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1052
3072
            mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1053
        }
1054
1055
48
        init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1056
48
        if (s->intra_vlc_format)
1057
13
            init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1058
1059
        /* build unified dc encoding tables */
1060
24576
        for (i = -255; i < 256; i++) {
1061
            int adiff, index;
1062
            int bits, code;
1063
24528
            int diff = i;
1064
1065
24528
            adiff = FFABS(diff);
1066
24528
            if (diff < 0)
1067
12240
                diff--;
1068
24528
            index = av_log2(2 * adiff);
1069
1070
24528
            bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1071
24528
            code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1072
24528
                    av_mod_uintp2(diff, index);
1073
24528
            mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1074
1075
24528
            bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1076
24528
            code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1077
24528
                    av_mod_uintp2(diff, index);
1078
24528
            mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1079
        }
1080
1081
384
        for (f_code = 1; f_code <= MAX_FCODE; f_code++)
1082
5505696
            for (mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1083
                int len;
1084
1085
5505360
                if (mv == 0) {
1086
336
                    len = ff_mpeg12_mbMotionVectorTable[0][1];
1087
                } else {
1088
                    int val, bit_size, code;
1089
1090
5505024
                    bit_size = f_code - 1;
1091
1092
5505024
                    val = mv;
1093
5505024
                    if (val < 0)
1094
2752512
                        val = -val;
1095
5505024
                    val--;
1096
5505024
                    code = (val >> bit_size) + 1;
1097
5505024
                    if (code < 17)
1098
195072
                        len = ff_mpeg12_mbMotionVectorTable[code][1] +
1099
                              1 + bit_size;
1100
                    else
1101
5309952
                        len = ff_mpeg12_mbMotionVectorTable[16][1] +
1102
                              2 + bit_size;
1103
                }
1104
1105
5505360
                mv_penalty[f_code][mv + MAX_DMV] = len;
1106
            }
1107
1108
1109
384
        for (f_code = MAX_FCODE; f_code > 0; f_code--)
1110
195408
            for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
1111
195072
                fcode_tab[mv + MAX_MV] = f_code;
1112
    }
1113
48
    s->me.mv_penalty = mv_penalty;
1114
48
    s->fcode_tab     = fcode_tab;
1115
48
    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1116
11
        s->min_qcoeff = -255;
1117
11
        s->max_qcoeff = 255;
1118
    } else {
1119
37
        s->min_qcoeff = -2047;
1120
37
        s->max_qcoeff = 2047;
1121
    }
1122
48
    if (s->intra_vlc_format) {
1123
13
        s->intra_ac_vlc_length      =
1124
13
        s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1125
    } else {
1126
35
        s->intra_ac_vlc_length      =
1127
35
        s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1128
    }
1129
48
    s->inter_ac_vlc_length      =
1130
48
    s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1131
48
}
1132
1133
#define OFFSET(x) offsetof(MpegEncContext, x)
1134
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1135
#define COMMON_OPTS                                                           \
1136
    { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.",   \
1137
      OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\
1138
    { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
1139
      OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1140
    { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1141
      OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1142
    { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1143
      OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1144
    { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \
1145
      OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \
1146
1147
static const AVOption mpeg1_options[] = {
1148
    COMMON_OPTS
1149
    FF_MPV_COMMON_OPTS
1150
    { NULL },
1151
};
1152
1153
static const AVOption mpeg2_options[] = {
1154
    COMMON_OPTS
1155
    { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1156
    { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1157
    { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1158
    {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1159
    {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1160
    {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1161
    { "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" },
1162
    {     "component",    NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_COMPONENT  },  0, 0, VE, "video_format" },
1163
    {     "pal",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_PAL        },  0, 0, VE, "video_format" },
1164
    {     "ntsc",         NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_NTSC       },  0, 0, VE, "video_format" },
1165
    {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
1166
    {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
1167
    {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
1168
    FF_MPV_COMMON_OPTS
1169
    { NULL },
1170
};
1171
1172
#define mpeg12_class(x)                                 \
1173
static const AVClass mpeg ## x ## _class = {            \
1174
    .class_name = "mpeg" # x "video encoder",           \
1175
    .item_name  = av_default_item_name,                 \
1176
    .option     = mpeg ## x ## _options,                \
1177
    .version    = LIBAVUTIL_VERSION_INT,                \
1178
};
1179
1180
mpeg12_class(1)
1181
mpeg12_class(2)
1182
1183
AVCodec ff_mpeg1video_encoder = {
1184
    .name                 = "mpeg1video",
1185
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1186
    .type                 = AVMEDIA_TYPE_VIDEO,
1187
    .id                   = AV_CODEC_ID_MPEG1VIDEO,
1188
    .priv_data_size       = sizeof(MpegEncContext),
1189
    .init                 = encode_init,
1190
    .encode2              = ff_mpv_encode_picture,
1191
    .close                = ff_mpv_encode_end,
1192
    .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1193
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1194
                                                           AV_PIX_FMT_NONE },
1195
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1196
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1197
    .priv_class           = &mpeg1_class,
1198
};
1199
1200
AVCodec ff_mpeg2video_encoder = {
1201
    .name                 = "mpeg2video",
1202
    .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1203
    .type                 = AVMEDIA_TYPE_VIDEO,
1204
    .id                   = AV_CODEC_ID_MPEG2VIDEO,
1205
    .priv_data_size       = sizeof(MpegEncContext),
1206
    .init                 = encode_init,
1207
    .encode2              = ff_mpv_encode_picture,
1208
    .close                = ff_mpv_encode_end,
1209
    .supported_framerates = ff_mpeg2_frame_rate_tab,
1210
    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1211
                                                           AV_PIX_FMT_YUV422P,
1212
                                                           AV_PIX_FMT_NONE },
1213
    .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1214
    .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
1215
    .priv_class           = &mpeg2_class,
1216
};