avcodec/cavsdec: Propagate error codes inside decode_mb_i()
[ffmpeg.git] / libavcodec / mpeg12enc.c
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 static av_cold void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len)
65 {
66     int i;
67
68     for (i = 0; i < 128; i++) {
69         int level = i - 64;
70         int run;
71         if (!level)
72             continue;
73         for (run = 0; run < 64; run++) {
74             int len, code;
75             int alevel = FFABS(level);
76
77             if (alevel > rl->max_level[0][run])
78                 code = 111;                         /* rl->n */
79             else
80                 code = rl->index_run[0][run] + alevel - 1;
81
82             if (code < 111) {                       /* rl->n */
83                 /* length of VLC and sign */
84                 len = rl->table_vlc[code][1] + 1;
85             } else {
86                 len = rl->table_vlc[111 /* rl->n */][1] + 6;
87
88                 if (alevel < 128)
89                     len += 8;
90                 else
91                     len += 16;
92             }
93
94             uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
95         }
96     }
97 }
98
99 static int find_frame_rate_index(MpegEncContext *s)
100 {
101     int i;
102     AVRational bestq = (AVRational) {0, 0};
103     AVRational ext;
104     AVRational target = av_inv_q(s->avctx->time_base);
105
106     for (i = 1; i < 14; i++) {
107         if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
108             i >= 9)
109             break;
110
111         for (ext.num=1; ext.num <= 4; ext.num++) {
112             for (ext.den=1; ext.den <= 32; ext.den++) {
113                 AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
114
115                 if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
116                     continue;
117                 if (av_gcd(ext.den, ext.num) != 1)
118                     continue;
119
120                 if (    bestq.num==0
121                     || av_nearer_q(target, bestq, q) < 0
122                     || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
123                     bestq               = q;
124                     s->frame_rate_index = i;
125                     s->mpeg2_frame_rate_ext.num = ext.num;
126                     s->mpeg2_frame_rate_ext.den = ext.den;
127                 }
128             }
129         }
130     }
131
132     if (av_cmp_q(target, bestq))
133         return -1;
134     else
135         return 0;
136 }
137
138 static av_cold int encode_init(AVCodecContext *avctx)
139 {
140     MpegEncContext *s = avctx->priv_data;
141
142     if (ff_mpv_encode_init(avctx) < 0)
143         return -1;
144
145     if (find_frame_rate_index(s) < 0) {
146         if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
147             av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n",
148                    avctx->time_base.den, avctx->time_base.num);
149             return -1;
150         } else {
151             av_log(avctx, AV_LOG_INFO,
152                    "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n",
153                    avctx->time_base.den, avctx->time_base.num);
154         }
155     }
156
157     if (avctx->profile == FF_PROFILE_UNKNOWN) {
158         if (avctx->level != FF_LEVEL_UNKNOWN) {
159             av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
160             return -1;
161         }
162         /* Main or 4:2:2 */
163         avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
164     }
165
166     if (avctx->level == FF_LEVEL_UNKNOWN) {
167         if (avctx->profile == 0) {                  /* 4:2:2 */
168             if (avctx->width <= 720 && avctx->height <= 608)
169                 avctx->level = 5;                   /* Main */
170             else
171                 avctx->level = 2;                   /* High */
172         } else {
173             if (avctx->profile != 1 && s->chroma_format != CHROMA_420) {
174                 av_log(avctx, AV_LOG_ERROR,
175                        "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
176                 return -1;
177             }
178             if (avctx->width <= 720 && avctx->height <= 576)
179                 avctx->level = 8;                   /* Main */
180             else if (avctx->width <= 1440)
181                 avctx->level = 6;                   /* High 1440 */
182             else
183                 avctx->level = 4;                   /* High */
184         }
185     }
186
187     if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
188         av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
189         return AVERROR(EINVAL);
190     }
191
192     if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
193         if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
194             av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n"
195                                         "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
196             return AVERROR(EINVAL);
197         }
198     }
199
200     s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
201     if (s->drop_frame_timecode)
202         s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
203     if (s->drop_frame_timecode && s->frame_rate_index != 4) {
204         av_log(avctx, AV_LOG_ERROR,
205                "Drop frame time code only allowed with 1001/30000 fps\n");
206         return -1;
207     }
208
209 #if FF_API_PRIVATE_OPT
210 FF_DISABLE_DEPRECATION_WARNINGS
211     if (avctx->timecode_frame_start)
212         s->timecode_frame_start = avctx->timecode_frame_start;
213 FF_ENABLE_DEPRECATION_WARNINGS
214 #endif
215
216     if (s->tc_opt_str) {
217         AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
218         int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
219         if (ret < 0)
220             return ret;
221         s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
222         s->timecode_frame_start = s->tc.start;
223     } else {
224         s->timecode_frame_start = 0; // default is -1
225     }
226
227     return 0;
228 }
229
230 static void put_header(MpegEncContext *s, int header)
231 {
232     avpriv_align_put_bits(&s->pb);
233     put_bits(&s->pb, 16, header >> 16);
234     put_sbits(&s->pb, 16, header);
235 }
236
237 /* put sequence header if needed */
238 static void mpeg1_encode_sequence_header(MpegEncContext *s)
239 {
240     unsigned int vbv_buffer_size, fps, v;
241     int i, constraint_parameter_flag;
242     uint64_t time_code;
243     int64_t best_aspect_error = INT64_MAX;
244     AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
245
246     if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
247         aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
248
249     if (s->current_picture.f->key_frame) {
250         AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
251
252         /* MPEG-1 header repeated every GOP */
253         put_header(s, SEQ_START_CODE);
254
255         put_sbits(&s->pb, 12, s->width  & 0xFFF);
256         put_sbits(&s->pb, 12, s->height & 0xFFF);
257
258         for (i = 1; i < 15; i++) {
259             int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
260             if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
261                 error -= (1LL<<32) / ff_mpeg1_aspect[i];
262             else
263                 error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
264
265             error = FFABS(error);
266
267             if (error - 2 <= best_aspect_error) {
268                 best_aspect_error    = error;
269                 s->aspect_ratio_info = i;
270             }
271         }
272
273         put_bits(&s->pb, 4, s->aspect_ratio_info);
274         put_bits(&s->pb, 4, s->frame_rate_index);
275
276         if (s->avctx->rc_max_rate) {
277             v = (s->avctx->rc_max_rate + 399) / 400;
278             if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
279                 v = 0x3ffff;
280         } else {
281             v = 0x3FFFF;
282         }
283
284         if (s->avctx->rc_buffer_size)
285             vbv_buffer_size = s->avctx->rc_buffer_size;
286         else
287             /* VBV calculation: Scaled so that a VCD has the proper
288              * VBV size of 40 kilobytes */
289             vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
290         vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
291
292         put_sbits(&s->pb, 18, v);
293         put_bits(&s->pb, 1, 1);         // marker
294         put_sbits(&s->pb, 10, vbv_buffer_size);
295
296         constraint_parameter_flag =
297             s->width  <= 768                                    &&
298             s->height <= 576                                    &&
299             s->mb_width * s->mb_height                 <= 396   &&
300             s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
301             framerate.num <= framerate.den * 30                 &&
302             s->avctx->me_range                                  &&
303             s->avctx->me_range < 128                            &&
304             vbv_buffer_size <= 20                               &&
305             v <= 1856000 / 400                                  &&
306             s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
307
308         put_bits(&s->pb, 1, constraint_parameter_flag);
309
310         ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
311         ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
312
313         if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
314             AVFrameSideData *side_data;
315             int width = s->width;
316             int height = s->height;
317             int use_seq_disp_ext;
318
319             put_header(s, EXT_START_CODE);
320             put_bits(&s->pb, 4, 1);                 // seq ext
321
322             put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile
323
324             put_bits(&s->pb, 3, s->avctx->profile); // profile
325             put_bits(&s->pb, 4, s->avctx->level);   // level
326
327             put_bits(&s->pb, 1, s->progressive_sequence);
328             put_bits(&s->pb, 2, s->chroma_format);
329             put_bits(&s->pb, 2, s->width  >> 12);
330             put_bits(&s->pb, 2, s->height >> 12);
331             put_bits(&s->pb, 12, v >> 18);          // bitrate ext
332             put_bits(&s->pb, 1, 1);                 // marker
333             put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
334             put_bits(&s->pb, 1, s->low_delay);
335             put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
336             put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
337
338             side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
339             if (side_data) {
340                 AVPanScan *pan_scan = (AVPanScan *)side_data->data;
341                 if (pan_scan->width && pan_scan->height) {
342                     width = pan_scan->width >> 4;
343                     height = pan_scan->height >> 4;
344                 }
345             }
346
347             use_seq_disp_ext = (width != s->width ||
348                                 height != s->height ||
349                                 s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
350                                 s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
351                                 s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED ||
352                                 s->video_format != VIDEO_FORMAT_UNSPECIFIED);
353
354             if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
355                 put_header(s, EXT_START_CODE);
356                 put_bits(&s->pb, 4, 2);                         // sequence display extension
357                 put_bits(&s->pb, 3, s->video_format);           // video_format
358                 put_bits(&s->pb, 1, 1);                         // colour_description
359                 put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
360                 put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
361                 put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
362                 put_bits(&s->pb, 14, width);                    // display_horizontal_size
363                 put_bits(&s->pb, 1, 1);                         // marker_bit
364                 put_bits(&s->pb, 14, height);                   // display_vertical_size
365                 put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
366             }
367         }
368
369         put_header(s, GOP_START_CODE);
370         put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
371         /* time code: we must convert from the real frame rate to a
372          * fake MPEG frame rate in case of low frame rate */
373         fps       = (framerate.num + framerate.den / 2) / framerate.den;
374         time_code = s->current_picture_ptr->f->coded_picture_number +
375                     s->timecode_frame_start;
376
377         s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
378
379         av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
380         if (s->drop_frame_timecode)
381             time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
382
383         put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
384         put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
385         put_bits(&s->pb, 1, 1);
386         put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
387         put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
388         put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
389         put_bits(&s->pb, 1, 0);                     // broken link
390     }
391 }
392
393 static inline void encode_mb_skip_run(MpegEncContext *s, int run)
394 {
395     while (run >= 33) {
396         put_bits(&s->pb, 11, 0x008);
397         run -= 33;
398     }
399     put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
400              ff_mpeg12_mbAddrIncrTable[run][0]);
401 }
402
403 static av_always_inline void put_qscale(MpegEncContext *s)
404 {
405     put_bits(&s->pb, 5, s->qscale);
406 }
407
408 void ff_mpeg1_encode_slice_header(MpegEncContext *s)
409 {
410     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
411         put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
412         /* slice_vertical_position_extension */
413         put_bits(&s->pb, 3, s->mb_y >> 7);
414     } else {
415         put_header(s, SLICE_MIN_START_CODE + s->mb_y);
416     }
417     put_qscale(s);
418     /* slice extra information */
419     put_bits(&s->pb, 1, 0);
420 }
421
422 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
423 {
424     AVFrameSideData *side_data;
425     mpeg1_encode_sequence_header(s);
426
427     /* MPEG-1 picture header */
428     put_header(s, PICTURE_START_CODE);
429     /* temporal reference */
430
431     // RAL: s->picture_number instead of s->fake_picture_number
432     put_bits(&s->pb, 10,
433              (s->picture_number - s->gop_picture_number) & 0x3ff);
434     put_bits(&s->pb, 3, s->pict_type);
435
436     s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
437     put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
438
439     // RAL: Forward f_code also needed for B-frames
440     if (s->pict_type == AV_PICTURE_TYPE_P ||
441         s->pict_type == AV_PICTURE_TYPE_B) {
442         put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
443         if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
444             put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
445         else
446             put_bits(&s->pb, 3, 7);             /* forward_f_code */
447     }
448
449     // RAL: Backward f_code necessary for B-frames
450     if (s->pict_type == AV_PICTURE_TYPE_B) {
451         put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
452         if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
453             put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
454         else
455             put_bits(&s->pb, 3, 7);             /* backward_f_code */
456     }
457
458     put_bits(&s->pb, 1, 0);                     /* extra bit picture */
459
460     s->frame_pred_frame_dct = 1;
461     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
462         put_header(s, EXT_START_CODE);
463         put_bits(&s->pb, 4, 8);                 /* pic ext */
464         if (s->pict_type == AV_PICTURE_TYPE_P ||
465             s->pict_type == AV_PICTURE_TYPE_B) {
466             put_bits(&s->pb, 4, s->f_code);
467             put_bits(&s->pb, 4, s->f_code);
468         } else {
469             put_bits(&s->pb, 8, 255);
470         }
471         if (s->pict_type == AV_PICTURE_TYPE_B) {
472             put_bits(&s->pb, 4, s->b_code);
473             put_bits(&s->pb, 4, s->b_code);
474         } else {
475             put_bits(&s->pb, 8, 255);
476         }
477         put_bits(&s->pb, 2, s->intra_dc_precision);
478
479         av_assert0(s->picture_structure == PICT_FRAME);
480         put_bits(&s->pb, 2, s->picture_structure);
481         if (s->progressive_sequence)
482             put_bits(&s->pb, 1, 0);             /* no repeat */
483         else
484             put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
485         /* XXX: optimize the generation of this flag with entropy measures */
486         s->frame_pred_frame_dct = s->progressive_sequence;
487
488         put_bits(&s->pb, 1, s->frame_pred_frame_dct);
489         put_bits(&s->pb, 1, s->concealment_motion_vectors);
490         put_bits(&s->pb, 1, s->q_scale_type);
491         put_bits(&s->pb, 1, s->intra_vlc_format);
492         put_bits(&s->pb, 1, s->alternate_scan);
493         put_bits(&s->pb, 1, s->repeat_first_field);
494         s->progressive_frame = s->progressive_sequence;
495         /* chroma_420_type */
496         put_bits(&s->pb, 1, s->chroma_format ==
497                             CHROMA_420 ? s->progressive_frame : 0);
498         put_bits(&s->pb, 1, s->progressive_frame);
499         put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
500     }
501     if (s->scan_offset) {
502         int i;
503
504         put_header(s, USER_START_CODE);
505         for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
506             put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
507     }
508     side_data = av_frame_get_side_data(s->current_picture_ptr->f,
509                                        AV_FRAME_DATA_STEREO3D);
510     if (side_data) {
511         AVStereo3D *stereo = (AVStereo3D *)side_data->data;
512         uint8_t fpa_type;
513
514         switch (stereo->type) {
515         case AV_STEREO3D_SIDEBYSIDE:
516             fpa_type = 0x03;
517             break;
518         case AV_STEREO3D_TOPBOTTOM:
519             fpa_type = 0x04;
520             break;
521         case AV_STEREO3D_2D:
522             fpa_type = 0x08;
523             break;
524         case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
525             fpa_type = 0x23;
526             break;
527         default:
528             fpa_type = 0;
529             break;
530         }
531
532         if (fpa_type != 0) {
533             put_header(s, USER_START_CODE);
534             put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
535             put_bits(&s->pb, 8, 'P');
536             put_bits(&s->pb, 8, '3');
537             put_bits(&s->pb, 8, 'D');
538             put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
539
540             put_bits(&s->pb, 1, 1);     // reserved_bit
541             put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
542             put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
543             put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
544         }
545     }
546
547     s->mb_y = 0;
548     ff_mpeg1_encode_slice_header(s);
549 }
550
551 static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
552                                 int has_mv, int field_motion)
553 {
554     put_bits(&s->pb, n, bits);
555     if (!s->frame_pred_frame_dct) {
556         if (has_mv)
557             /* motion_type: frame/field */
558             put_bits(&s->pb, 2, 2 - field_motion);
559         put_bits(&s->pb, 1, s->interlaced_dct);
560     }
561 }
562
563 // RAL: Parameter added: f_or_b_code
564 static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
565 {
566     if (val == 0) {
567         /* zero vector */
568         put_bits(&s->pb,
569                  ff_mpeg12_mbMotionVectorTable[0][1],
570                  ff_mpeg12_mbMotionVectorTable[0][0]);
571     } else {
572         int code, sign, bits;
573         int bit_size = f_or_b_code - 1;
574         int range    = 1 << bit_size;
575         /* modulo encoding */
576         val = sign_extend(val, 5 + bit_size);
577
578         if (val >= 0) {
579             val--;
580             code = (val >> bit_size) + 1;
581             bits = val & (range - 1);
582             sign = 0;
583         } else {
584             val = -val;
585             val--;
586             code = (val >> bit_size) + 1;
587             bits = val & (range - 1);
588             sign = 1;
589         }
590
591         av_assert2(code > 0 && code <= 16);
592
593         put_bits(&s->pb,
594                  ff_mpeg12_mbMotionVectorTable[code][1],
595                  ff_mpeg12_mbMotionVectorTable[code][0]);
596
597         put_bits(&s->pb, 1, sign);
598         if (bit_size > 0)
599             put_bits(&s->pb, bit_size, bits);
600     }
601 }
602
603 static inline void encode_dc(MpegEncContext *s, int diff, int component)
604 {
605     unsigned int diff_u = diff + 255;
606     if (diff_u >= 511) {
607         int index;
608
609         if (diff < 0) {
610             index = av_log2_16bit(-2 * diff);
611             diff--;
612         } else {
613             index = av_log2_16bit(2 * diff);
614         }
615         if (component == 0)
616             put_bits(&s->pb,
617                      ff_mpeg12_vlc_dc_lum_bits[index] + index,
618                      (ff_mpeg12_vlc_dc_lum_code[index] << index) +
619                      av_mod_uintp2(diff, index));
620         else
621             put_bits(&s->pb,
622                      ff_mpeg12_vlc_dc_chroma_bits[index] + index,
623                      (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
624                      av_mod_uintp2(diff, index));
625     } else {
626         if (component == 0)
627             put_bits(&s->pb,
628                      mpeg1_lum_dc_uni[diff + 255] & 0xFF,
629                      mpeg1_lum_dc_uni[diff + 255] >> 8);
630         else
631             put_bits(&s->pb,
632                      mpeg1_chr_dc_uni[diff + 255] & 0xFF,
633                      mpeg1_chr_dc_uni[diff + 255] >> 8);
634     }
635 }
636
637 static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
638 {
639     int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
640     int code, component;
641     const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
642
643     last_index = s->block_last_index[n];
644
645     /* DC coef */
646     if (s->mb_intra) {
647         component = (n <= 3 ? 0 : (n & 1) + 1);
648         dc        = block[0];                   /* overflow is impossible */
649         diff      = dc - s->last_dc[component];
650         encode_dc(s, diff, component);
651         s->last_dc[component] = dc;
652         i = 1;
653         if (s->intra_vlc_format)
654             table_vlc = ff_rl_mpeg2.table_vlc;
655     } else {
656         /* encode the first coefficient: needs to be done here because
657          * it is handled slightly differently */
658         level = block[0];
659         if (abs(level) == 1) {
660             code = ((uint32_t)level >> 31);     /* the sign bit */
661             put_bits(&s->pb, 2, code | 0x02);
662             i = 1;
663         } else {
664             i             = 0;
665             last_non_zero = -1;
666             goto next_coef;
667         }
668     }
669
670     /* now quantify & encode AC coefs */
671     last_non_zero = i - 1;
672
673     for (; i <= last_index; i++) {
674         j     = s->intra_scantable.permutated[i];
675         level = block[j];
676
677 next_coef:
678         /* encode using VLC */
679         if (level != 0) {
680             run = i - last_non_zero - 1;
681
682             alevel = level;
683             MASK_ABS(sign, alevel);
684             sign &= 1;
685
686             if (alevel <= mpeg1_max_level[0][run]) {
687                 code = mpeg1_index_run[0][run] + alevel - 1;
688                 /* store the VLC & sign at once */
689                 put_bits(&s->pb, table_vlc[code][1] + 1,
690                          (table_vlc[code][0] << 1) + sign);
691             } else {
692                 /* escape seems to be pretty rare <5% so I do not optimize it */
693                 put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
694                 /* escape: only clip in this case */
695                 put_bits(&s->pb, 6, run);
696                 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
697                     if (alevel < 128) {
698                         put_sbits(&s->pb, 8, level);
699                     } else {
700                         if (level < 0)
701                             put_bits(&s->pb, 16, 0x8001 + level + 255);
702                         else
703                             put_sbits(&s->pb, 16, level);
704                     }
705                 } else {
706                     put_sbits(&s->pb, 12, level);
707                 }
708             }
709             last_non_zero = i;
710         }
711     }
712     /* end of block */
713     put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
714 }
715
716 static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
717                                                       int16_t block[8][64],
718                                                       int motion_x, int motion_y,
719                                                       int mb_block_count)
720 {
721     int i, cbp;
722     const int mb_x     = s->mb_x;
723     const int mb_y     = s->mb_y;
724     const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
725
726     /* compute cbp */
727     cbp = 0;
728     for (i = 0; i < mb_block_count; i++)
729         if (s->block_last_index[i] >= 0)
730             cbp |= 1 << (mb_block_count - 1 - i);
731
732     if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
733         (mb_x != s->mb_width - 1 ||
734          (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
735         ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
736          (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
737           (((s->mv_dir & MV_DIR_FORWARD)
738             ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
739                (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
740            ((s->mv_dir & MV_DIR_BACKWARD)
741             ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
742                (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
743         s->mb_skip_run++;
744         s->qscale -= s->dquant;
745         s->skip_count++;
746         s->misc_bits++;
747         s->last_bits++;
748         if (s->pict_type == AV_PICTURE_TYPE_P) {
749             s->last_mv[0][0][0] =
750             s->last_mv[0][0][1] =
751             s->last_mv[0][1][0] =
752             s->last_mv[0][1][1] = 0;
753         }
754     } else {
755         if (first_mb) {
756             av_assert0(s->mb_skip_run == 0);
757             encode_mb_skip_run(s, s->mb_x);
758         } else {
759             encode_mb_skip_run(s, s->mb_skip_run);
760         }
761
762         if (s->pict_type == AV_PICTURE_TYPE_I) {
763             if (s->dquant && cbp) {
764                 /* macroblock_type: macroblock_quant = 1 */
765                 put_mb_modes(s, 2, 1, 0, 0);
766                 put_qscale(s);
767             } else {
768                 /* macroblock_type: macroblock_quant = 0 */
769                 put_mb_modes(s, 1, 1, 0, 0);
770                 s->qscale -= s->dquant;
771             }
772             s->misc_bits += get_bits_diff(s);
773             s->i_count++;
774         } else if (s->mb_intra) {
775             if (s->dquant && cbp) {
776                 put_mb_modes(s, 6, 0x01, 0, 0);
777                 put_qscale(s);
778             } else {
779                 put_mb_modes(s, 5, 0x03, 0, 0);
780                 s->qscale -= s->dquant;
781             }
782             s->misc_bits += get_bits_diff(s);
783             s->i_count++;
784             memset(s->last_mv, 0, sizeof(s->last_mv));
785         } else if (s->pict_type == AV_PICTURE_TYPE_P) {
786             if (s->mv_type == MV_TYPE_16X16) {
787                 if (cbp != 0) {
788                     if ((motion_x | motion_y) == 0) {
789                         if (s->dquant) {
790                             /* macroblock_pattern & quant */
791                             put_mb_modes(s, 5, 1, 0, 0);
792                             put_qscale(s);
793                         } else {
794                             /* macroblock_pattern only */
795                             put_mb_modes(s, 2, 1, 0, 0);
796                         }
797                         s->misc_bits += get_bits_diff(s);
798                     } else {
799                         if (s->dquant) {
800                             put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
801                             put_qscale(s);
802                         } else {
803                             put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
804                         }
805                         s->misc_bits += get_bits_diff(s);
806                         // RAL: f_code parameter added
807                         mpeg1_encode_motion(s,
808                                             motion_x - s->last_mv[0][0][0],
809                                             s->f_code);
810                         // RAL: f_code parameter added
811                         mpeg1_encode_motion(s,
812                                             motion_y - s->last_mv[0][0][1],
813                                             s->f_code);
814                         s->mv_bits += get_bits_diff(s);
815                     }
816                 } else {
817                     put_bits(&s->pb, 3, 1);         /* motion only */
818                     if (!s->frame_pred_frame_dct)
819                         put_bits(&s->pb, 2, 2);     /* motion_type: frame */
820                     s->misc_bits += get_bits_diff(s);
821                     // RAL: f_code parameter added
822                     mpeg1_encode_motion(s,
823                                         motion_x - s->last_mv[0][0][0],
824                                         s->f_code);
825                     // RAL: f_code parameter added
826                     mpeg1_encode_motion(s,
827                                         motion_y - s->last_mv[0][0][1],
828                                         s->f_code);
829                     s->qscale  -= s->dquant;
830                     s->mv_bits += get_bits_diff(s);
831                 }
832                 s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
833                 s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
834             } else {
835                 av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
836
837                 if (cbp) {
838                     if (s->dquant) {
839                         put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
840                         put_qscale(s);
841                     } else {
842                         put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
843                     }
844                 } else {
845                     put_bits(&s->pb, 3, 1);             /* motion only */
846                     put_bits(&s->pb, 2, 1);             /* motion_type: field */
847                     s->qscale -= s->dquant;
848                 }
849                 s->misc_bits += get_bits_diff(s);
850                 for (i = 0; i < 2; i++) {
851                     put_bits(&s->pb, 1, s->field_select[0][i]);
852                     mpeg1_encode_motion(s,
853                                         s->mv[0][i][0] - s->last_mv[0][i][0],
854                                         s->f_code);
855                     mpeg1_encode_motion(s,
856                                         s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
857                                         s->f_code);
858                     s->last_mv[0][i][0] = s->mv[0][i][0];
859                     s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
860                 }
861                 s->mv_bits += get_bits_diff(s);
862             }
863             if (cbp) {
864                 if (s->chroma_y_shift) {
865                     put_bits(&s->pb,
866                              ff_mpeg12_mbPatTable[cbp][1],
867                              ff_mpeg12_mbPatTable[cbp][0]);
868                 } else {
869                     put_bits(&s->pb,
870                              ff_mpeg12_mbPatTable[cbp >> 2][1],
871                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
872                     put_sbits(&s->pb, 2, cbp);
873                 }
874             }
875             s->f_count++;
876         } else {
877             if (s->mv_type == MV_TYPE_16X16) {
878                 if (cbp) {                      // With coded bloc pattern
879                     if (s->dquant) {
880                         if (s->mv_dir == MV_DIR_FORWARD)
881                             put_mb_modes(s, 6, 3, 1, 0);
882                         else
883                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
884                         put_qscale(s);
885                     } else {
886                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
887                     }
888                 } else {                        // No coded bloc pattern
889                     put_bits(&s->pb, 5 - s->mv_dir, 2);
890                     if (!s->frame_pred_frame_dct)
891                         put_bits(&s->pb, 2, 2); /* motion_type: frame */
892                     s->qscale -= s->dquant;
893                 }
894                 s->misc_bits += get_bits_diff(s);
895                 if (s->mv_dir & MV_DIR_FORWARD) {
896                     mpeg1_encode_motion(s,
897                                         s->mv[0][0][0] - s->last_mv[0][0][0],
898                                         s->f_code);
899                     mpeg1_encode_motion(s,
900                                         s->mv[0][0][1] - s->last_mv[0][0][1],
901                                         s->f_code);
902                     s->last_mv[0][0][0] =
903                     s->last_mv[0][1][0] = s->mv[0][0][0];
904                     s->last_mv[0][0][1] =
905                     s->last_mv[0][1][1] = s->mv[0][0][1];
906                     s->f_count++;
907                 }
908                 if (s->mv_dir & MV_DIR_BACKWARD) {
909                     mpeg1_encode_motion(s,
910                                         s->mv[1][0][0] - s->last_mv[1][0][0],
911                                         s->b_code);
912                     mpeg1_encode_motion(s,
913                                         s->mv[1][0][1] - s->last_mv[1][0][1],
914                                         s->b_code);
915                     s->last_mv[1][0][0] =
916                     s->last_mv[1][1][0] = s->mv[1][0][0];
917                     s->last_mv[1][0][1] =
918                     s->last_mv[1][1][1] = s->mv[1][0][1];
919                     s->b_count++;
920                 }
921             } else {
922                 av_assert2(s->mv_type == MV_TYPE_FIELD);
923                 av_assert2(!s->frame_pred_frame_dct);
924                 if (cbp) {                      // With coded bloc pattern
925                     if (s->dquant) {
926                         if (s->mv_dir == MV_DIR_FORWARD)
927                             put_mb_modes(s, 6, 3, 1, 1);
928                         else
929                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
930                         put_qscale(s);
931                     } else {
932                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
933                     }
934                 } else {                        // No coded bloc pattern
935                     put_bits(&s->pb, 5 - s->mv_dir, 2);
936                     put_bits(&s->pb, 2, 1);     /* motion_type: field */
937                     s->qscale -= s->dquant;
938                 }
939                 s->misc_bits += get_bits_diff(s);
940                 if (s->mv_dir & MV_DIR_FORWARD) {
941                     for (i = 0; i < 2; i++) {
942                         put_bits(&s->pb, 1, s->field_select[0][i]);
943                         mpeg1_encode_motion(s,
944                                             s->mv[0][i][0] - s->last_mv[0][i][0],
945                                             s->f_code);
946                         mpeg1_encode_motion(s,
947                                             s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
948                                             s->f_code);
949                         s->last_mv[0][i][0] = s->mv[0][i][0];
950                         s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
951                     }
952                     s->f_count++;
953                 }
954                 if (s->mv_dir & MV_DIR_BACKWARD) {
955                     for (i = 0; i < 2; i++) {
956                         put_bits(&s->pb, 1, s->field_select[1][i]);
957                         mpeg1_encode_motion(s,
958                                             s->mv[1][i][0] - s->last_mv[1][i][0],
959                                             s->b_code);
960                         mpeg1_encode_motion(s,
961                                             s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
962                                             s->b_code);
963                         s->last_mv[1][i][0] = s->mv[1][i][0];
964                         s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
965                     }
966                     s->b_count++;
967                 }
968             }
969             s->mv_bits += get_bits_diff(s);
970             if (cbp) {
971                 if (s->chroma_y_shift) {
972                     put_bits(&s->pb,
973                              ff_mpeg12_mbPatTable[cbp][1],
974                              ff_mpeg12_mbPatTable[cbp][0]);
975                 } else {
976                     put_bits(&s->pb,
977                              ff_mpeg12_mbPatTable[cbp >> 2][1],
978                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
979                     put_sbits(&s->pb, 2, cbp);
980                 }
981             }
982         }
983         for (i = 0; i < mb_block_count; i++)
984             if (cbp & (1 << (mb_block_count - 1 - i)))
985                 mpeg1_encode_block(s, block[i], i);
986         s->mb_skip_run = 0;
987         if (s->mb_intra)
988             s->i_tex_bits += get_bits_diff(s);
989         else
990             s->p_tex_bits += get_bits_diff(s);
991     }
992 }
993
994 void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
995                         int motion_x, int motion_y)
996 {
997     if (s->chroma_format == CHROMA_420)
998         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
999     else
1000         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
1001 }
1002
1003 av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
1004 {
1005     static int done = 0;
1006
1007     ff_mpeg12_common_init(s);
1008
1009     if (!done) {
1010         int f_code;
1011         int mv;
1012         int i;
1013
1014         done = 1;
1015         ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
1016         ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
1017
1018         for (i = 0; i < 64; i++) {
1019             mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1020             mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1021         }
1022
1023         init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1024         if (s->intra_vlc_format)
1025             init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1026
1027         /* build unified dc encoding tables */
1028         for (i = -255; i < 256; i++) {
1029             int adiff, index;
1030             int bits, code;
1031             int diff = i;
1032
1033             adiff = FFABS(diff);
1034             if (diff < 0)
1035                 diff--;
1036             index = av_log2(2 * adiff);
1037
1038             bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1039             code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1040                     av_mod_uintp2(diff, index);
1041             mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1042
1043             bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1044             code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1045                     av_mod_uintp2(diff, index);
1046             mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1047         }
1048
1049         for (f_code = 1; f_code <= MAX_FCODE; f_code++)
1050             for (mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1051                 int len;
1052
1053                 if (mv == 0) {
1054                     len = ff_mpeg12_mbMotionVectorTable[0][1];
1055                 } else {
1056                     int val, bit_size, code;
1057
1058                     bit_size = f_code - 1;
1059
1060                     val = mv;
1061                     if (val < 0)
1062                         val = -val;
1063                     val--;
1064                     code = (val >> bit_size) + 1;
1065                     if (code < 17)
1066                         len = ff_mpeg12_mbMotionVectorTable[code][1] +
1067                               1 + bit_size;
1068                     else
1069                         len = ff_mpeg12_mbMotionVectorTable[16][1] +
1070                               2 + bit_size;
1071                 }
1072
1073                 mv_penalty[f_code][mv + MAX_DMV] = len;
1074             }
1075
1076
1077         for (f_code = MAX_FCODE; f_code > 0; f_code--)
1078             for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
1079                 fcode_tab[mv + MAX_MV] = f_code;
1080     }
1081     s->me.mv_penalty = mv_penalty;
1082     s->fcode_tab     = fcode_tab;
1083     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1084         s->min_qcoeff = -255;
1085         s->max_qcoeff = 255;
1086     } else {
1087         s->min_qcoeff = -2047;
1088         s->max_qcoeff = 2047;
1089     }
1090     if (s->intra_vlc_format) {
1091         s->intra_ac_vlc_length      =
1092         s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1093     } else {
1094         s->intra_ac_vlc_length      =
1095         s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1096     }
1097     s->inter_ac_vlc_length      =
1098     s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1099 }
1100
1101 #define OFFSET(x) offsetof(MpegEncContext, x)
1102 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1103 #define COMMON_OPTS                                                           \
1104     { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.",   \
1105       OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\
1106     { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
1107       OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1108     { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1109       OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1110     { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1111       OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1112     { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \
1113       OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \
1114
1115 static const AVOption mpeg1_options[] = {
1116     COMMON_OPTS
1117     FF_MPV_COMMON_OPTS
1118     { NULL },
1119 };
1120
1121 static const AVOption mpeg2_options[] = {
1122     COMMON_OPTS
1123     { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1124     { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1125     { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1126     {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1127     {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1128     {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1129     { "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" },
1130     {     "component",    NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_COMPONENT  },  0, 0, VE, "video_format" },
1131     {     "pal",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_PAL        },  0, 0, VE, "video_format" },
1132     {     "ntsc",         NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_NTSC       },  0, 0, VE, "video_format" },
1133     {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
1134     {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
1135     {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
1136     FF_MPV_COMMON_OPTS
1137     { NULL },
1138 };
1139
1140 #define mpeg12_class(x)                                 \
1141 static const AVClass mpeg ## x ## _class = {            \
1142     .class_name = "mpeg" # x "video encoder",           \
1143     .item_name  = av_default_item_name,                 \
1144     .option     = mpeg ## x ## _options,                \
1145     .version    = LIBAVUTIL_VERSION_INT,                \
1146 };
1147
1148 mpeg12_class(1)
1149 mpeg12_class(2)
1150
1151 AVCodec ff_mpeg1video_encoder = {
1152     .name                 = "mpeg1video",
1153     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1154     .type                 = AVMEDIA_TYPE_VIDEO,
1155     .id                   = AV_CODEC_ID_MPEG1VIDEO,
1156     .priv_data_size       = sizeof(MpegEncContext),
1157     .init                 = encode_init,
1158     .encode2              = ff_mpv_encode_picture,
1159     .close                = ff_mpv_encode_end,
1160     .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1161     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1162                                                            AV_PIX_FMT_NONE },
1163     .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1164     .priv_class           = &mpeg1_class,
1165 };
1166
1167 AVCodec ff_mpeg2video_encoder = {
1168     .name                 = "mpeg2video",
1169     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1170     .type                 = AVMEDIA_TYPE_VIDEO,
1171     .id                   = AV_CODEC_ID_MPEG2VIDEO,
1172     .priv_data_size       = sizeof(MpegEncContext),
1173     .init                 = encode_init,
1174     .encode2              = ff_mpv_encode_picture,
1175     .close                = ff_mpv_encode_end,
1176     .supported_framerates = ff_mpeg2_frame_rate_tab,
1177     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1178                                                            AV_PIX_FMT_YUV422P,
1179                                                            AV_PIX_FMT_NONE },
1180     .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1181     .priv_class           = &mpeg2_class,
1182 };