dxva2_h264: fix reference field marking in long slice struct
[ffmpeg.git] / libavcodec / mpeg12enc.c
1 /*
2  * MPEG1/2 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  * MPEG1/2 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, "MPEG1/2 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                    "MPEG1/2 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 (s->tc_opt_str) {
210         AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
211         int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
212         if (ret < 0)
213             return ret;
214         s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
215         s->avctx->timecode_frame_start = s->tc.start;
216     } else {
217         s->avctx->timecode_frame_start = 0; // default is -1
218     }
219     return 0;
220 }
221
222 static void put_header(MpegEncContext *s, int header)
223 {
224     avpriv_align_put_bits(&s->pb);
225     put_bits(&s->pb, 16, header >> 16);
226     put_sbits(&s->pb, 16, header);
227 }
228
229 /* put sequence header if needed */
230 static void mpeg1_encode_sequence_header(MpegEncContext *s)
231 {
232     unsigned int vbv_buffer_size, fps, v;
233     int i, constraint_parameter_flag;
234     uint64_t time_code;
235     int64_t best_aspect_error = INT64_MAX;
236     AVRational aspect_ratio = s->avctx->sample_aspect_ratio;
237
238     if (aspect_ratio.num == 0 || aspect_ratio.den == 0)
239         aspect_ratio = (AVRational){1,1};             // pixel aspect 1.1 (VGA)
240
241     if (s->current_picture.f->key_frame) {
242         AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
243
244         /* mpeg1 header repeated every gop */
245         put_header(s, SEQ_START_CODE);
246
247         put_sbits(&s->pb, 12, s->width  & 0xFFF);
248         put_sbits(&s->pb, 12, s->height & 0xFFF);
249
250         for (i = 1; i < 15; i++) {
251             int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den;
252             if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
253                 error -= (1LL<<32) / ff_mpeg1_aspect[i];
254             else
255                 error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den;
256
257             error = FFABS(error);
258
259             if (error - 2 <= best_aspect_error) {
260                 best_aspect_error    = error;
261                 s->aspect_ratio_info = i;
262             }
263         }
264
265         put_bits(&s->pb, 4, s->aspect_ratio_info);
266         put_bits(&s->pb, 4, s->frame_rate_index);
267
268         if (s->avctx->rc_max_rate) {
269             v = (s->avctx->rc_max_rate + 399) / 400;
270             if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
271                 v = 0x3ffff;
272         } else {
273             v = 0x3FFFF;
274         }
275
276         if (s->avctx->rc_buffer_size)
277             vbv_buffer_size = s->avctx->rc_buffer_size;
278         else
279             /* VBV calculation: Scaled so that a VCD has the proper
280              * VBV size of 40 kilobytes */
281             vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
282         vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
283
284         put_sbits(&s->pb, 18, v);
285         put_bits(&s->pb, 1, 1);         // marker
286         put_sbits(&s->pb, 10, vbv_buffer_size);
287
288         constraint_parameter_flag =
289             s->width  <= 768                                    &&
290             s->height <= 576                                    &&
291             s->mb_width * s->mb_height                 <= 396   &&
292             s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
293             framerate.num <= framerate.den * 30                 &&
294             s->avctx->me_range                                  &&
295             s->avctx->me_range < 128                            &&
296             vbv_buffer_size <= 20                               &&
297             v <= 1856000 / 400                                  &&
298             s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
299
300         put_bits(&s->pb, 1, constraint_parameter_flag);
301
302         ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
303         ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
304
305         if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
306             AVFrameSideData *side_data;
307             int width = s->width;
308             int height = s->height;
309             int use_seq_disp_ext;
310
311             put_header(s, EXT_START_CODE);
312             put_bits(&s->pb, 4, 1);                 // seq ext
313
314             put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile
315
316             put_bits(&s->pb, 3, s->avctx->profile); // profile
317             put_bits(&s->pb, 4, s->avctx->level);   // level
318
319             put_bits(&s->pb, 1, s->progressive_sequence);
320             put_bits(&s->pb, 2, s->chroma_format);
321             put_bits(&s->pb, 2, s->width  >> 12);
322             put_bits(&s->pb, 2, s->height >> 12);
323             put_bits(&s->pb, 12, v >> 18);          // bitrate ext
324             put_bits(&s->pb, 1, 1);                 // marker
325             put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
326             put_bits(&s->pb, 1, s->low_delay);
327             put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
328             put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
329
330             side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN);
331             if (side_data) {
332                 AVPanScan *pan_scan = (AVPanScan *)side_data->data;
333                 if (pan_scan->width && pan_scan->height) {
334                     width = pan_scan->width >> 4;
335                     height = pan_scan->height >> 4;
336                 }
337             }
338
339             use_seq_disp_ext = (width != s->width ||
340                                 height != s->height ||
341                                 s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
342                                 s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
343                                 s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED);
344
345             if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) {
346                 put_header(s, EXT_START_CODE);
347                 put_bits(&s->pb, 4, 2);                         // sequence display extension
348                 put_bits(&s->pb, 3, 0);                         // video_format: 0 is components
349                 put_bits(&s->pb, 1, 1);                         // colour_description
350                 put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
351                 put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
352                 put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
353                 put_bits(&s->pb, 14, width);                    // display_horizontal_size
354                 put_bits(&s->pb, 1, 1);                         // marker_bit
355                 put_bits(&s->pb, 14, height);                   // display_vertical_size
356                 put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
357             }
358         }
359
360         put_header(s, GOP_START_CODE);
361         put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
362         /* time code: we must convert from the real frame rate to a
363          * fake MPEG frame rate in case of low frame rate */
364         fps       = (framerate.num + framerate.den / 2) / framerate.den;
365         time_code = s->current_picture_ptr->f->coded_picture_number +
366                     s->avctx->timecode_frame_start;
367
368         s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
369
370         av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
371         if (s->drop_frame_timecode)
372             time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
373
374         put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
375         put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
376         put_bits(&s->pb, 1, 1);
377         put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
378         put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
379         put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
380         put_bits(&s->pb, 1, 0);                     // broken link
381     }
382 }
383
384 static inline void encode_mb_skip_run(MpegEncContext *s, int run)
385 {
386     while (run >= 33) {
387         put_bits(&s->pb, 11, 0x008);
388         run -= 33;
389     }
390     put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
391              ff_mpeg12_mbAddrIncrTable[run][0]);
392 }
393
394 static av_always_inline void put_qscale(MpegEncContext *s)
395 {
396     put_bits(&s->pb, 5, s->qscale);
397 }
398
399 void ff_mpeg1_encode_slice_header(MpegEncContext *s)
400 {
401     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
402         put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
403         /* slice_vertical_position_extension */
404         put_bits(&s->pb, 3, s->mb_y >> 7);
405     } else {
406         put_header(s, SLICE_MIN_START_CODE + s->mb_y);
407     }
408     put_qscale(s);
409     /* slice extra information */
410     put_bits(&s->pb, 1, 0);
411 }
412
413 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
414 {
415     AVFrameSideData *side_data;
416     mpeg1_encode_sequence_header(s);
417
418     /* mpeg1 picture header */
419     put_header(s, PICTURE_START_CODE);
420     /* temporal reference */
421
422     // RAL: s->picture_number instead of s->fake_picture_number
423     put_bits(&s->pb, 10,
424              (s->picture_number - s->gop_picture_number) & 0x3ff);
425     put_bits(&s->pb, 3, s->pict_type);
426
427     s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
428     put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
429
430     // RAL: Forward f_code also needed for B-frames
431     if (s->pict_type == AV_PICTURE_TYPE_P ||
432         s->pict_type == AV_PICTURE_TYPE_B) {
433         put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
434         if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
435             put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
436         else
437             put_bits(&s->pb, 3, 7);             /* forward_f_code */
438     }
439
440     // RAL: Backward f_code necessary for B-frames
441     if (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->b_code);     /* backward_f_code */
445         else
446             put_bits(&s->pb, 3, 7);             /* backward_f_code */
447     }
448
449     put_bits(&s->pb, 1, 0);                     /* extra bit picture */
450
451     s->frame_pred_frame_dct = 1;
452     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
453         put_header(s, EXT_START_CODE);
454         put_bits(&s->pb, 4, 8);                 /* pic ext */
455         if (s->pict_type == AV_PICTURE_TYPE_P ||
456             s->pict_type == AV_PICTURE_TYPE_B) {
457             put_bits(&s->pb, 4, s->f_code);
458             put_bits(&s->pb, 4, s->f_code);
459         } else {
460             put_bits(&s->pb, 8, 255);
461         }
462         if (s->pict_type == AV_PICTURE_TYPE_B) {
463             put_bits(&s->pb, 4, s->b_code);
464             put_bits(&s->pb, 4, s->b_code);
465         } else {
466             put_bits(&s->pb, 8, 255);
467         }
468         put_bits(&s->pb, 2, s->intra_dc_precision);
469
470         av_assert0(s->picture_structure == PICT_FRAME);
471         put_bits(&s->pb, 2, s->picture_structure);
472         if (s->progressive_sequence)
473             put_bits(&s->pb, 1, 0);             /* no repeat */
474         else
475             put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
476         /* XXX: optimize the generation of this flag with entropy measures */
477         s->frame_pred_frame_dct = s->progressive_sequence;
478
479         put_bits(&s->pb, 1, s->frame_pred_frame_dct);
480         put_bits(&s->pb, 1, s->concealment_motion_vectors);
481         put_bits(&s->pb, 1, s->q_scale_type);
482         put_bits(&s->pb, 1, s->intra_vlc_format);
483         put_bits(&s->pb, 1, s->alternate_scan);
484         put_bits(&s->pb, 1, s->repeat_first_field);
485         s->progressive_frame = s->progressive_sequence;
486         /* chroma_420_type */
487         put_bits(&s->pb, 1, s->chroma_format ==
488                             CHROMA_420 ? s->progressive_frame : 0);
489         put_bits(&s->pb, 1, s->progressive_frame);
490         put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
491     }
492     if (s->scan_offset) {
493         int i;
494
495         put_header(s, USER_START_CODE);
496         for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
497             put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
498     }
499     side_data = av_frame_get_side_data(s->current_picture_ptr->f,
500                                        AV_FRAME_DATA_STEREO3D);
501     if (side_data) {
502         AVStereo3D *stereo = (AVStereo3D *)side_data->data;
503         uint8_t fpa_type;
504
505         switch (stereo->type) {
506         case AV_STEREO3D_SIDEBYSIDE:
507             fpa_type = 0x03;
508             break;
509         case AV_STEREO3D_TOPBOTTOM:
510             fpa_type = 0x04;
511             break;
512         case AV_STEREO3D_2D:
513             fpa_type = 0x08;
514             break;
515         case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
516             fpa_type = 0x23;
517             break;
518         default:
519             fpa_type = 0;
520             break;
521         }
522
523         if (fpa_type != 0) {
524             put_header(s, USER_START_CODE);
525             put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
526             put_bits(&s->pb, 8, 'P');
527             put_bits(&s->pb, 8, '3');
528             put_bits(&s->pb, 8, 'D');
529             put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
530
531             put_bits(&s->pb, 1, 1);     // reserved_bit
532             put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
533             put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
534             put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
535         }
536     }
537
538     s->mb_y = 0;
539     ff_mpeg1_encode_slice_header(s);
540 }
541
542 static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
543                                 int has_mv, int field_motion)
544 {
545     put_bits(&s->pb, n, bits);
546     if (!s->frame_pred_frame_dct) {
547         if (has_mv)
548             /* motion_type: frame/field */
549             put_bits(&s->pb, 2, 2 - field_motion);
550         put_bits(&s->pb, 1, s->interlaced_dct);
551     }
552 }
553
554 // RAL: Parameter added: f_or_b_code
555 static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
556 {
557     if (val == 0) {
558         /* zero vector */
559         put_bits(&s->pb,
560                  ff_mpeg12_mbMotionVectorTable[0][1],
561                  ff_mpeg12_mbMotionVectorTable[0][0]);
562     } else {
563         int code, sign, bits;
564         int bit_size = f_or_b_code - 1;
565         int range    = 1 << bit_size;
566         /* modulo encoding */
567         val = sign_extend(val, 5 + bit_size);
568
569         if (val >= 0) {
570             val--;
571             code = (val >> bit_size) + 1;
572             bits = val & (range - 1);
573             sign = 0;
574         } else {
575             val = -val;
576             val--;
577             code = (val >> bit_size) + 1;
578             bits = val & (range - 1);
579             sign = 1;
580         }
581
582         av_assert2(code > 0 && code <= 16);
583
584         put_bits(&s->pb,
585                  ff_mpeg12_mbMotionVectorTable[code][1],
586                  ff_mpeg12_mbMotionVectorTable[code][0]);
587
588         put_bits(&s->pb, 1, sign);
589         if (bit_size > 0)
590             put_bits(&s->pb, bit_size, bits);
591     }
592 }
593
594 static inline void encode_dc(MpegEncContext *s, int diff, int component)
595 {
596     unsigned int diff_u = diff + 255;
597     if (diff_u >= 511) {
598         int index;
599
600         if (diff < 0) {
601             index = av_log2_16bit(-2 * diff);
602             diff--;
603         } else {
604             index = av_log2_16bit(2 * diff);
605         }
606         if (component == 0)
607             put_bits(&s->pb,
608                      ff_mpeg12_vlc_dc_lum_bits[index] + index,
609                      (ff_mpeg12_vlc_dc_lum_code[index] << index) +
610                      av_mod_uintp2(diff, index));
611         else
612             put_bits(&s->pb,
613                      ff_mpeg12_vlc_dc_chroma_bits[index] + index,
614                      (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
615                      av_mod_uintp2(diff, index));
616     } else {
617         if (component == 0)
618             put_bits(&s->pb,
619                      mpeg1_lum_dc_uni[diff + 255] & 0xFF,
620                      mpeg1_lum_dc_uni[diff + 255] >> 8);
621         else
622             put_bits(&s->pb,
623                      mpeg1_chr_dc_uni[diff + 255] & 0xFF,
624                      mpeg1_chr_dc_uni[diff + 255] >> 8);
625     }
626 }
627
628 static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
629 {
630     int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
631     int code, component;
632     const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
633
634     last_index = s->block_last_index[n];
635
636     /* DC coef */
637     if (s->mb_intra) {
638         component = (n <= 3 ? 0 : (n & 1) + 1);
639         dc        = block[0];                   /* overflow is impossible */
640         diff      = dc - s->last_dc[component];
641         encode_dc(s, diff, component);
642         s->last_dc[component] = dc;
643         i = 1;
644         if (s->intra_vlc_format)
645             table_vlc = ff_rl_mpeg2.table_vlc;
646     } else {
647         /* encode the first coefficient: needs to be done here because
648          * it is handled slightly differently */
649         level = block[0];
650         if (abs(level) == 1) {
651             code = ((uint32_t)level >> 31);     /* the sign bit */
652             put_bits(&s->pb, 2, code | 0x02);
653             i = 1;
654         } else {
655             i             = 0;
656             last_non_zero = -1;
657             goto next_coef;
658         }
659     }
660
661     /* now quantify & encode AC coefs */
662     last_non_zero = i - 1;
663
664     for (; i <= last_index; i++) {
665         j     = s->intra_scantable.permutated[i];
666         level = block[j];
667
668 next_coef:
669         /* encode using VLC */
670         if (level != 0) {
671             run = i - last_non_zero - 1;
672
673             alevel = level;
674             MASK_ABS(sign, alevel);
675             sign &= 1;
676
677             if (alevel <= mpeg1_max_level[0][run]) {
678                 code = mpeg1_index_run[0][run] + alevel - 1;
679                 /* store the VLC & sign at once */
680                 put_bits(&s->pb, table_vlc[code][1] + 1,
681                          (table_vlc[code][0] << 1) + sign);
682             } else {
683                 /* escape seems to be pretty rare <5% so I do not optimize it */
684                 put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
685                 /* escape: only clip in this case */
686                 put_bits(&s->pb, 6, run);
687                 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
688                     if (alevel < 128) {
689                         put_sbits(&s->pb, 8, level);
690                     } else {
691                         if (level < 0)
692                             put_bits(&s->pb, 16, 0x8001 + level + 255);
693                         else
694                             put_sbits(&s->pb, 16, level);
695                     }
696                 } else {
697                     put_sbits(&s->pb, 12, level);
698                 }
699             }
700             last_non_zero = i;
701         }
702     }
703     /* end of block */
704     put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
705 }
706
707 static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
708                                                       int16_t block[8][64],
709                                                       int motion_x, int motion_y,
710                                                       int mb_block_count)
711 {
712     int i, cbp;
713     const int mb_x     = s->mb_x;
714     const int mb_y     = s->mb_y;
715     const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
716
717     /* compute cbp */
718     cbp = 0;
719     for (i = 0; i < mb_block_count; i++)
720         if (s->block_last_index[i] >= 0)
721             cbp |= 1 << (mb_block_count - 1 - i);
722
723     if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
724         (mb_x != s->mb_width - 1 ||
725          (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
726         ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
727          (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
728           (((s->mv_dir & MV_DIR_FORWARD)
729             ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
730                (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
731            ((s->mv_dir & MV_DIR_BACKWARD)
732             ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
733                (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
734         s->mb_skip_run++;
735         s->qscale -= s->dquant;
736         s->skip_count++;
737         s->misc_bits++;
738         s->last_bits++;
739         if (s->pict_type == AV_PICTURE_TYPE_P) {
740             s->last_mv[0][0][0] =
741             s->last_mv[0][0][1] =
742             s->last_mv[0][1][0] =
743             s->last_mv[0][1][1] = 0;
744         }
745     } else {
746         if (first_mb) {
747             av_assert0(s->mb_skip_run == 0);
748             encode_mb_skip_run(s, s->mb_x);
749         } else {
750             encode_mb_skip_run(s, s->mb_skip_run);
751         }
752
753         if (s->pict_type == AV_PICTURE_TYPE_I) {
754             if (s->dquant && cbp) {
755                 /* macroblock_type: macroblock_quant = 1 */
756                 put_mb_modes(s, 2, 1, 0, 0);
757                 put_qscale(s);
758             } else {
759                 /* macroblock_type: macroblock_quant = 0 */
760                 put_mb_modes(s, 1, 1, 0, 0);
761                 s->qscale -= s->dquant;
762             }
763             s->misc_bits += get_bits_diff(s);
764             s->i_count++;
765         } else if (s->mb_intra) {
766             if (s->dquant && cbp) {
767                 put_mb_modes(s, 6, 0x01, 0, 0);
768                 put_qscale(s);
769             } else {
770                 put_mb_modes(s, 5, 0x03, 0, 0);
771                 s->qscale -= s->dquant;
772             }
773             s->misc_bits += get_bits_diff(s);
774             s->i_count++;
775             memset(s->last_mv, 0, sizeof(s->last_mv));
776         } else if (s->pict_type == AV_PICTURE_TYPE_P) {
777             if (s->mv_type == MV_TYPE_16X16) {
778                 if (cbp != 0) {
779                     if ((motion_x | motion_y) == 0) {
780                         if (s->dquant) {
781                             /* macroblock_pattern & quant */
782                             put_mb_modes(s, 5, 1, 0, 0);
783                             put_qscale(s);
784                         } else {
785                             /* macroblock_pattern only */
786                             put_mb_modes(s, 2, 1, 0, 0);
787                         }
788                         s->misc_bits += get_bits_diff(s);
789                     } else {
790                         if (s->dquant) {
791                             put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
792                             put_qscale(s);
793                         } else {
794                             put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
795                         }
796                         s->misc_bits += get_bits_diff(s);
797                         // RAL: f_code parameter added
798                         mpeg1_encode_motion(s,
799                                             motion_x - s->last_mv[0][0][0],
800                                             s->f_code);
801                         // RAL: f_code parameter added
802                         mpeg1_encode_motion(s,
803                                             motion_y - s->last_mv[0][0][1],
804                                             s->f_code);
805                         s->mv_bits += get_bits_diff(s);
806                     }
807                 } else {
808                     put_bits(&s->pb, 3, 1);         /* motion only */
809                     if (!s->frame_pred_frame_dct)
810                         put_bits(&s->pb, 2, 2);     /* motion_type: frame */
811                     s->misc_bits += get_bits_diff(s);
812                     // RAL: f_code parameter added
813                     mpeg1_encode_motion(s,
814                                         motion_x - s->last_mv[0][0][0],
815                                         s->f_code);
816                     // RAL: f_code parameter added
817                     mpeg1_encode_motion(s,
818                                         motion_y - s->last_mv[0][0][1],
819                                         s->f_code);
820                     s->qscale  -= s->dquant;
821                     s->mv_bits += get_bits_diff(s);
822                 }
823                 s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
824                 s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
825             } else {
826                 av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
827
828                 if (cbp) {
829                     if (s->dquant) {
830                         put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
831                         put_qscale(s);
832                     } else {
833                         put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
834                     }
835                 } else {
836                     put_bits(&s->pb, 3, 1);             /* motion only */
837                     put_bits(&s->pb, 2, 1);             /* motion_type: field */
838                     s->qscale -= s->dquant;
839                 }
840                 s->misc_bits += get_bits_diff(s);
841                 for (i = 0; i < 2; i++) {
842                     put_bits(&s->pb, 1, s->field_select[0][i]);
843                     mpeg1_encode_motion(s,
844                                         s->mv[0][i][0] - s->last_mv[0][i][0],
845                                         s->f_code);
846                     mpeg1_encode_motion(s,
847                                         s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
848                                         s->f_code);
849                     s->last_mv[0][i][0] = s->mv[0][i][0];
850                     s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
851                 }
852                 s->mv_bits += get_bits_diff(s);
853             }
854             if (cbp) {
855                 if (s->chroma_y_shift) {
856                     put_bits(&s->pb,
857                              ff_mpeg12_mbPatTable[cbp][1],
858                              ff_mpeg12_mbPatTable[cbp][0]);
859                 } else {
860                     put_bits(&s->pb,
861                              ff_mpeg12_mbPatTable[cbp >> 2][1],
862                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
863                     put_sbits(&s->pb, 2, cbp);
864                 }
865             }
866             s->f_count++;
867         } else {
868             if (s->mv_type == MV_TYPE_16X16) {
869                 if (cbp) {                      // With coded bloc pattern
870                     if (s->dquant) {
871                         if (s->mv_dir == MV_DIR_FORWARD)
872                             put_mb_modes(s, 6, 3, 1, 0);
873                         else
874                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
875                         put_qscale(s);
876                     } else {
877                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
878                     }
879                 } else {                        // No coded bloc pattern
880                     put_bits(&s->pb, 5 - s->mv_dir, 2);
881                     if (!s->frame_pred_frame_dct)
882                         put_bits(&s->pb, 2, 2); /* motion_type: frame */
883                     s->qscale -= s->dquant;
884                 }
885                 s->misc_bits += get_bits_diff(s);
886                 if (s->mv_dir & MV_DIR_FORWARD) {
887                     mpeg1_encode_motion(s,
888                                         s->mv[0][0][0] - s->last_mv[0][0][0],
889                                         s->f_code);
890                     mpeg1_encode_motion(s,
891                                         s->mv[0][0][1] - s->last_mv[0][0][1],
892                                         s->f_code);
893                     s->last_mv[0][0][0] =
894                     s->last_mv[0][1][0] = s->mv[0][0][0];
895                     s->last_mv[0][0][1] =
896                     s->last_mv[0][1][1] = s->mv[0][0][1];
897                     s->f_count++;
898                 }
899                 if (s->mv_dir & MV_DIR_BACKWARD) {
900                     mpeg1_encode_motion(s,
901                                         s->mv[1][0][0] - s->last_mv[1][0][0],
902                                         s->b_code);
903                     mpeg1_encode_motion(s,
904                                         s->mv[1][0][1] - s->last_mv[1][0][1],
905                                         s->b_code);
906                     s->last_mv[1][0][0] =
907                     s->last_mv[1][1][0] = s->mv[1][0][0];
908                     s->last_mv[1][0][1] =
909                     s->last_mv[1][1][1] = s->mv[1][0][1];
910                     s->b_count++;
911                 }
912             } else {
913                 av_assert2(s->mv_type == MV_TYPE_FIELD);
914                 av_assert2(!s->frame_pred_frame_dct);
915                 if (cbp) {                      // With coded bloc pattern
916                     if (s->dquant) {
917                         if (s->mv_dir == MV_DIR_FORWARD)
918                             put_mb_modes(s, 6, 3, 1, 1);
919                         else
920                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
921                         put_qscale(s);
922                     } else {
923                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
924                     }
925                 } else {                        // No coded bloc pattern
926                     put_bits(&s->pb, 5 - s->mv_dir, 2);
927                     put_bits(&s->pb, 2, 1);     /* motion_type: field */
928                     s->qscale -= s->dquant;
929                 }
930                 s->misc_bits += get_bits_diff(s);
931                 if (s->mv_dir & MV_DIR_FORWARD) {
932                     for (i = 0; i < 2; i++) {
933                         put_bits(&s->pb, 1, s->field_select[0][i]);
934                         mpeg1_encode_motion(s,
935                                             s->mv[0][i][0] - s->last_mv[0][i][0],
936                                             s->f_code);
937                         mpeg1_encode_motion(s,
938                                             s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
939                                             s->f_code);
940                         s->last_mv[0][i][0] = s->mv[0][i][0];
941                         s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
942                     }
943                     s->f_count++;
944                 }
945                 if (s->mv_dir & MV_DIR_BACKWARD) {
946                     for (i = 0; i < 2; i++) {
947                         put_bits(&s->pb, 1, s->field_select[1][i]);
948                         mpeg1_encode_motion(s,
949                                             s->mv[1][i][0] - s->last_mv[1][i][0],
950                                             s->b_code);
951                         mpeg1_encode_motion(s,
952                                             s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
953                                             s->b_code);
954                         s->last_mv[1][i][0] = s->mv[1][i][0];
955                         s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
956                     }
957                     s->b_count++;
958                 }
959             }
960             s->mv_bits += get_bits_diff(s);
961             if (cbp) {
962                 if (s->chroma_y_shift) {
963                     put_bits(&s->pb,
964                              ff_mpeg12_mbPatTable[cbp][1],
965                              ff_mpeg12_mbPatTable[cbp][0]);
966                 } else {
967                     put_bits(&s->pb,
968                              ff_mpeg12_mbPatTable[cbp >> 2][1],
969                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
970                     put_sbits(&s->pb, 2, cbp);
971                 }
972             }
973         }
974         for (i = 0; i < mb_block_count; i++)
975             if (cbp & (1 << (mb_block_count - 1 - i)))
976                 mpeg1_encode_block(s, block[i], i);
977         s->mb_skip_run = 0;
978         if (s->mb_intra)
979             s->i_tex_bits += get_bits_diff(s);
980         else
981             s->p_tex_bits += get_bits_diff(s);
982     }
983 }
984
985 void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
986                         int motion_x, int motion_y)
987 {
988     if (s->chroma_format == CHROMA_420)
989         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
990     else
991         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
992 }
993
994 av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
995 {
996     static int done = 0;
997
998     ff_mpeg12_common_init(s);
999
1000     if (!done) {
1001         int f_code;
1002         int mv;
1003         int i;
1004
1005         done = 1;
1006         ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
1007         ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
1008
1009         for (i = 0; i < 64; i++) {
1010             mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1011             mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1012         }
1013
1014         init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1015         if (s->intra_vlc_format)
1016             init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1017
1018         /* build unified dc encoding tables */
1019         for (i = -255; i < 256; i++) {
1020             int adiff, index;
1021             int bits, code;
1022             int diff = i;
1023
1024             adiff = FFABS(diff);
1025             if (diff < 0)
1026                 diff--;
1027             index = av_log2(2 * adiff);
1028
1029             bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1030             code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1031                     av_mod_uintp2(diff, index);
1032             mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1033
1034             bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1035             code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1036                     av_mod_uintp2(diff, index);
1037             mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1038         }
1039
1040         for (f_code = 1; f_code <= MAX_FCODE; f_code++)
1041             for (mv = -MAX_DMV; mv <= MAX_DMV; mv++) {
1042                 int len;
1043
1044                 if (mv == 0) {
1045                     len = ff_mpeg12_mbMotionVectorTable[0][1];
1046                 } else {
1047                     int val, bit_size, code;
1048
1049                     bit_size = f_code - 1;
1050
1051                     val = mv;
1052                     if (val < 0)
1053                         val = -val;
1054                     val--;
1055                     code = (val >> bit_size) + 1;
1056                     if (code < 17)
1057                         len = ff_mpeg12_mbMotionVectorTable[code][1] +
1058                               1 + bit_size;
1059                     else
1060                         len = ff_mpeg12_mbMotionVectorTable[16][1] +
1061                               2 + bit_size;
1062                 }
1063
1064                 mv_penalty[f_code][mv + MAX_DMV] = len;
1065             }
1066
1067
1068         for (f_code = MAX_FCODE; f_code > 0; f_code--)
1069             for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
1070                 fcode_tab[mv + MAX_MV] = f_code;
1071     }
1072     s->me.mv_penalty = mv_penalty;
1073     s->fcode_tab     = fcode_tab;
1074     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1075         s->min_qcoeff = -255;
1076         s->max_qcoeff = 255;
1077     } else {
1078         s->min_qcoeff = -2047;
1079         s->max_qcoeff = 2047;
1080     }
1081     if (s->intra_vlc_format) {
1082         s->intra_ac_vlc_length      =
1083         s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1084     } else {
1085         s->intra_ac_vlc_length      =
1086         s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1087     }
1088     s->inter_ac_vlc_length      =
1089     s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1090 }
1091
1092 #define OFFSET(x) offsetof(MpegEncContext, x)
1093 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1094 #define COMMON_OPTS                                                           \
1095     { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format",   \
1096       OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\
1097     { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
1098       OFFSET(intra_vlc_format),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1099     { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1100       OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
1101     { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1102       OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1103
1104 static const AVOption mpeg1_options[] = {
1105     COMMON_OPTS
1106     FF_MPV_COMMON_OPTS
1107     { NULL },
1108 };
1109
1110 static const AVOption mpeg2_options[] = {
1111     COMMON_OPTS
1112     { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1113     { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1114     { "seq_disp_ext",     "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" },
1115     {     "auto",   NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = -1},  0, 0, VE, "seq_disp_ext" },
1116     {     "never",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 0 },  0, 0, VE, "seq_disp_ext" },
1117     {     "always", NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 1 },  0, 0, VE, "seq_disp_ext" },
1118     FF_MPV_COMMON_OPTS
1119     { NULL },
1120 };
1121
1122 #define mpeg12_class(x)                                 \
1123 static const AVClass mpeg ## x ## _class = {            \
1124     .class_name = "mpeg" # x "video encoder",           \
1125     .item_name  = av_default_item_name,                 \
1126     .option     = mpeg ## x ## _options,                \
1127     .version    = LIBAVUTIL_VERSION_INT,                \
1128 };
1129
1130 mpeg12_class(1)
1131 mpeg12_class(2)
1132
1133 AVCodec ff_mpeg1video_encoder = {
1134     .name                 = "mpeg1video",
1135     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1136     .type                 = AVMEDIA_TYPE_VIDEO,
1137     .id                   = AV_CODEC_ID_MPEG1VIDEO,
1138     .priv_data_size       = sizeof(MpegEncContext),
1139     .init                 = encode_init,
1140     .encode2              = ff_mpv_encode_picture,
1141     .close                = ff_mpv_encode_end,
1142     .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1143     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1144                                                            AV_PIX_FMT_NONE },
1145     .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1146     .priv_class           = &mpeg1_class,
1147 };
1148
1149 AVCodec ff_mpeg2video_encoder = {
1150     .name                 = "mpeg2video",
1151     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1152     .type                 = AVMEDIA_TYPE_VIDEO,
1153     .id                   = AV_CODEC_ID_MPEG2VIDEO,
1154     .priv_data_size       = sizeof(MpegEncContext),
1155     .init                 = encode_init,
1156     .encode2              = ff_mpv_encode_picture,
1157     .close                = ff_mpv_encode_end,
1158     .supported_framerates = ff_mpeg2_frame_rate_tab,
1159     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1160                                                            AV_PIX_FMT_YUV422P,
1161                                                            AV_PIX_FMT_NONE },
1162     .capabilities         = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
1163     .priv_class           = &mpeg2_class,
1164 };