avcodec/mpeg12enc: store sequence display extension only if we have something to...
[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
46 static const uint8_t inv_non_linear_qscale[] = {
47     0, 2, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16,
48 };
49
50 static const uint8_t svcd_scan_offset_placeholder[] = {
51     0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
52     0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
53 };
54
55 static uint8_t mv_penalty[MAX_FCODE + 1][MAX_MV * 2 + 1];
56 static uint8_t fcode_tab[MAX_MV * 2 + 1];
57
58 static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2];
59 static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2];
60
61 /* simple include everything table for dc, first byte is bits
62  * number next 3 are code */
63 static uint32_t mpeg1_lum_dc_uni[512];
64 static uint32_t mpeg1_chr_dc_uni[512];
65
66 static uint8_t mpeg1_index_run[2][64];
67 static int8_t  mpeg1_max_level[2][64];
68
69 static av_cold void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len)
70 {
71     int i;
72
73     for (i = 0; i < 128; i++) {
74         int level = i - 64;
75         int run;
76         if (!level)
77             continue;
78         for (run = 0; run < 64; run++) {
79             int len, code;
80             int alevel = FFABS(level);
81
82             if (alevel > rl->max_level[0][run])
83                 code = 111;                         /* rl->n */
84             else
85                 code = rl->index_run[0][run] + alevel - 1;
86
87             if (code < 111) {                       /* rl->n */
88                 /* length of VLC and sign */
89                 len = rl->table_vlc[code][1] + 1;
90             } else {
91                 len = rl->table_vlc[111 /* rl->n */][1] + 6;
92
93                 if (alevel < 128)
94                     len += 8;
95                 else
96                     len += 16;
97             }
98
99             uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
100         }
101     }
102 }
103
104 static int find_frame_rate_index(MpegEncContext *s)
105 {
106     int i;
107     AVRational bestq = (AVRational) {0, 0};
108     AVRational ext;
109     AVRational target = av_inv_q(s->avctx->time_base);
110
111     for (i = 1; i < 14; i++) {
112         if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
113             i >= 9)
114             break;
115
116         for (ext.num=1; ext.num <= 4; ext.num++) {
117             for (ext.den=1; ext.den <= 32; ext.den++) {
118                 AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]);
119
120                 if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1))
121                     continue;
122                 if (av_gcd(ext.den, ext.num) != 1)
123                     continue;
124
125                 if (    bestq.num==0
126                     || av_nearer_q(target, bestq, q) < 0
127                     || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) {
128                     bestq               = q;
129                     s->frame_rate_index = i;
130                     s->mpeg2_frame_rate_ext.num = ext.num;
131                     s->mpeg2_frame_rate_ext.den = ext.den;
132                 }
133             }
134         }
135     }
136
137     if (av_cmp_q(target, bestq))
138         return -1;
139     else
140         return 0;
141 }
142
143 static av_cold int encode_init(AVCodecContext *avctx)
144 {
145     MpegEncContext *s = avctx->priv_data;
146
147     if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && avctx->height > 2800)
148         avctx->thread_count = 1;
149
150     if (ff_MPV_encode_init(avctx) < 0)
151         return -1;
152
153     if (find_frame_rate_index(s) < 0) {
154         if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
155             av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n",
156                    avctx->time_base.den, avctx->time_base.num);
157             return -1;
158         } else {
159             av_log(avctx, AV_LOG_INFO,
160                    "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n",
161                    avctx->time_base.den, avctx->time_base.num);
162         }
163     }
164
165     if (avctx->profile == FF_PROFILE_UNKNOWN) {
166         if (avctx->level != FF_LEVEL_UNKNOWN) {
167             av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
168             return -1;
169         }
170         /* Main or 4:2:2 */
171         avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
172     }
173
174     if (avctx->level == FF_LEVEL_UNKNOWN) {
175         if (avctx->profile == 0) {                  /* 4:2:2 */
176             if (avctx->width <= 720 && avctx->height <= 608)
177                 avctx->level = 5;                   /* Main */
178             else
179                 avctx->level = 2;                   /* High */
180         } else {
181             if (avctx->profile != 1 && s->chroma_format != CHROMA_420) {
182                 av_log(avctx, AV_LOG_ERROR,
183                        "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
184                 return -1;
185             }
186             if (avctx->width <= 720 && avctx->height <= 576)
187                 avctx->level = 8;                   /* Main */
188             else if (avctx->width <= 1440)
189                 avctx->level = 6;                   /* High 1440 */
190             else
191                 avctx->level = 4;                   /* High */
192         }
193     }
194
195     if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) {
196         av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n");
197         return AVERROR(EINVAL);
198     }
199
200     if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
201         if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) {
202             av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiplies of 4096\n"
203                                         "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL);
204             return AVERROR(EINVAL);
205         }
206     }
207
208     s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE);
209     if (s->drop_frame_timecode)
210         s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
211     if (s->drop_frame_timecode && s->frame_rate_index != 4) {
212         av_log(avctx, AV_LOG_ERROR,
213                "Drop frame time code only allowed with 1001/30000 fps\n");
214         return -1;
215     }
216
217     if (s->tc_opt_str) {
218         AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
219         int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
220         if (ret < 0)
221             return ret;
222         s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
223         s->avctx->timecode_frame_start = s->tc.start;
224     } else {
225         s->avctx->timecode_frame_start = 0; // default is -1
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         /* mpeg1 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             put_header(s, EXT_START_CODE);
315             put_bits(&s->pb, 4, 1);                 // seq ext
316
317             put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile
318
319             put_bits(&s->pb, 3, s->avctx->profile); // profile
320             put_bits(&s->pb, 4, s->avctx->level);   // level
321
322             put_bits(&s->pb, 1, s->progressive_sequence);
323             put_bits(&s->pb, 2, s->chroma_format);
324             put_bits(&s->pb, 2, s->width  >> 12);
325             put_bits(&s->pb, 2, s->height >> 12);
326             put_bits(&s->pb, 12, v >> 18);          // bitrate ext
327             put_bits(&s->pb, 1, 1);                 // marker
328             put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
329             put_bits(&s->pb, 1, s->low_delay);
330             put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n
331             put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d
332
333             if (s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
334                 s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
335                 s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
336                 put_header(s, EXT_START_CODE);
337                 put_bits(&s->pb, 4, 2);                         // sequence display extension
338                 put_bits(&s->pb, 3, 0);                         // video_format: 0 is components
339                 put_bits(&s->pb, 1, 1);                         // colour_description
340                 put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries
341                 put_bits(&s->pb, 8, s->avctx->color_trc);       // transfer_characteristics
342                 put_bits(&s->pb, 8, s->avctx->colorspace);      // matrix_coefficients
343                 put_bits(&s->pb, 14, s->width);                 // display_horizontal_size
344                 put_bits(&s->pb, 1, 1);                         // marker_bit
345                 put_bits(&s->pb, 14, s->height);                // display_vertical_size
346                 put_bits(&s->pb, 3, 0);                         // remaining 3 bits are zero padding
347             }
348         }
349
350         put_header(s, GOP_START_CODE);
351         put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
352         /* time code: we must convert from the real frame rate to a
353          * fake MPEG frame rate in case of low frame rate */
354         fps       = (framerate.num + framerate.den / 2) / framerate.den;
355         time_code = s->current_picture_ptr->f->coded_picture_number +
356                     s->avctx->timecode_frame_start;
357
358         s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number;
359
360         av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
361         if (s->drop_frame_timecode)
362             time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps);
363
364         put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
365         put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
366         put_bits(&s->pb, 1, 1);
367         put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
368         put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
369         put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number);
370         put_bits(&s->pb, 1, 0);                     // broken link
371     }
372 }
373
374 static inline void encode_mb_skip_run(MpegEncContext *s, int run)
375 {
376     while (run >= 33) {
377         put_bits(&s->pb, 11, 0x008);
378         run -= 33;
379     }
380     put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
381              ff_mpeg12_mbAddrIncrTable[run][0]);
382 }
383
384 static av_always_inline void put_qscale(MpegEncContext *s)
385 {
386     if (s->q_scale_type) {
387         av_assert2(s->qscale >= 1 && s->qscale <= 12);
388         put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
389     } else {
390         put_bits(&s->pb, 5, s->qscale);
391     }
392 }
393
394 void ff_mpeg1_encode_slice_header(MpegEncContext *s)
395 {
396     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) {
397         put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
398         /* slice_vertical_position_extension */
399         put_bits(&s->pb, 3, s->mb_y >> 7);
400     } else {
401         put_header(s, SLICE_MIN_START_CODE + s->mb_y);
402     }
403     put_qscale(s);
404     /* slice extra information */
405     put_bits(&s->pb, 1, 0);
406 }
407
408 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
409 {
410     AVFrameSideData *side_data;
411     mpeg1_encode_sequence_header(s);
412
413     /* mpeg1 picture header */
414     put_header(s, PICTURE_START_CODE);
415     /* temporal reference */
416
417     // RAL: s->picture_number instead of s->fake_picture_number
418     put_bits(&s->pb, 10,
419              (s->picture_number - s->gop_picture_number) & 0x3ff);
420     put_bits(&s->pb, 3, s->pict_type);
421
422     s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
423     put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
424
425     // RAL: Forward f_code also needed for B-frames
426     if (s->pict_type == AV_PICTURE_TYPE_P ||
427         s->pict_type == AV_PICTURE_TYPE_B) {
428         put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
429         if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
430             put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
431         else
432             put_bits(&s->pb, 3, 7);             /* forward_f_code */
433     }
434
435     // RAL: Backward f_code necessary for B-frames
436     if (s->pict_type == AV_PICTURE_TYPE_B) {
437         put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
438         if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
439             put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
440         else
441             put_bits(&s->pb, 3, 7);             /* backward_f_code */
442     }
443
444     put_bits(&s->pb, 1, 0);                     /* extra bit picture */
445
446     s->frame_pred_frame_dct = 1;
447     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
448         put_header(s, EXT_START_CODE);
449         put_bits(&s->pb, 4, 8);                 /* pic ext */
450         if (s->pict_type == AV_PICTURE_TYPE_P ||
451             s->pict_type == AV_PICTURE_TYPE_B) {
452             put_bits(&s->pb, 4, s->f_code);
453             put_bits(&s->pb, 4, s->f_code);
454         } else {
455             put_bits(&s->pb, 8, 255);
456         }
457         if (s->pict_type == AV_PICTURE_TYPE_B) {
458             put_bits(&s->pb, 4, s->b_code);
459             put_bits(&s->pb, 4, s->b_code);
460         } else {
461             put_bits(&s->pb, 8, 255);
462         }
463         put_bits(&s->pb, 2, s->intra_dc_precision);
464
465         av_assert0(s->picture_structure == PICT_FRAME);
466         put_bits(&s->pb, 2, s->picture_structure);
467         if (s->progressive_sequence)
468             put_bits(&s->pb, 1, 0);             /* no repeat */
469         else
470             put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first);
471         /* XXX: optimize the generation of this flag with entropy measures */
472         s->frame_pred_frame_dct = s->progressive_sequence;
473
474         put_bits(&s->pb, 1, s->frame_pred_frame_dct);
475         put_bits(&s->pb, 1, s->concealment_motion_vectors);
476         put_bits(&s->pb, 1, s->q_scale_type);
477         put_bits(&s->pb, 1, s->intra_vlc_format);
478         put_bits(&s->pb, 1, s->alternate_scan);
479         put_bits(&s->pb, 1, s->repeat_first_field);
480         s->progressive_frame = s->progressive_sequence;
481         /* chroma_420_type */
482         put_bits(&s->pb, 1, s->chroma_format ==
483                             CHROMA_420 ? s->progressive_frame : 0);
484         put_bits(&s->pb, 1, s->progressive_frame);
485         put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
486     }
487     if (s->scan_offset) {
488         int i;
489
490         put_header(s, USER_START_CODE);
491         for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
492             put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
493     }
494     side_data = av_frame_get_side_data(s->current_picture_ptr->f,
495                                        AV_FRAME_DATA_STEREO3D);
496     if (side_data) {
497         AVStereo3D *stereo = (AVStereo3D *)side_data->data;
498         uint8_t fpa_type;
499
500         switch (stereo->type) {
501         case AV_STEREO3D_SIDEBYSIDE:
502             fpa_type = 0x03;
503             break;
504         case AV_STEREO3D_TOPBOTTOM:
505             fpa_type = 0x04;
506             break;
507         case AV_STEREO3D_2D:
508             fpa_type = 0x08;
509             break;
510         case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
511             fpa_type = 0x23;
512             break;
513         default:
514             fpa_type = 0;
515             break;
516         }
517
518         if (fpa_type != 0) {
519             put_header(s, USER_START_CODE);
520             put_bits(&s->pb, 8, 'J');   // S3D_video_format_signaling_identifier
521             put_bits(&s->pb, 8, 'P');
522             put_bits(&s->pb, 8, '3');
523             put_bits(&s->pb, 8, 'D');
524             put_bits(&s->pb, 8, 0x03);  // S3D_video_format_length
525
526             put_bits(&s->pb, 1, 1);     // reserved_bit
527             put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type
528             put_bits(&s->pb, 8, 0x04);  // reserved_data[0]
529             put_bits(&s->pb, 8, 0xFF);  // reserved_data[1]
530         }
531     }
532
533     s->mb_y = 0;
534     ff_mpeg1_encode_slice_header(s);
535 }
536
537 static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
538                                 int has_mv, int field_motion)
539 {
540     put_bits(&s->pb, n, bits);
541     if (!s->frame_pred_frame_dct) {
542         if (has_mv)
543             /* motion_type: frame/field */
544             put_bits(&s->pb, 2, 2 - field_motion);
545         put_bits(&s->pb, 1, s->interlaced_dct);
546     }
547 }
548
549 // RAL: Parameter added: f_or_b_code
550 static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
551 {
552     if (val == 0) {
553         /* zero vector */
554         put_bits(&s->pb,
555                  ff_mpeg12_mbMotionVectorTable[0][1],
556                  ff_mpeg12_mbMotionVectorTable[0][0]);
557     } else {
558         int code, sign, bits;
559         int bit_size = f_or_b_code - 1;
560         int range    = 1 << bit_size;
561         /* modulo encoding */
562         val = sign_extend(val, 5 + bit_size);
563
564         if (val >= 0) {
565             val--;
566             code = (val >> bit_size) + 1;
567             bits = val & (range - 1);
568             sign = 0;
569         } else {
570             val = -val;
571             val--;
572             code = (val >> bit_size) + 1;
573             bits = val & (range - 1);
574             sign = 1;
575         }
576
577         av_assert2(code > 0 && code <= 16);
578
579         put_bits(&s->pb,
580                  ff_mpeg12_mbMotionVectorTable[code][1],
581                  ff_mpeg12_mbMotionVectorTable[code][0]);
582
583         put_bits(&s->pb, 1, sign);
584         if (bit_size > 0)
585             put_bits(&s->pb, bit_size, bits);
586     }
587 }
588
589 static inline void encode_dc(MpegEncContext *s, int diff, int component)
590 {
591     if (((unsigned) (diff + 255)) >= 511) {
592         int index;
593
594         if (diff < 0) {
595             index = av_log2_16bit(-2 * diff);
596             diff--;
597         } else {
598             index = av_log2_16bit(2 * diff);
599         }
600         if (component == 0)
601             put_bits(&s->pb,
602                      ff_mpeg12_vlc_dc_lum_bits[index] + index,
603                      (ff_mpeg12_vlc_dc_lum_code[index] << index) +
604                      (diff & ((1 << index) - 1)));
605         else
606             put_bits(&s->pb,
607                      ff_mpeg12_vlc_dc_chroma_bits[index] + index,
608                      (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
609                      (diff & ((1 << index) - 1)));
610     } else {
611         if (component == 0)
612             put_bits(&s->pb,
613                      mpeg1_lum_dc_uni[diff + 255] & 0xFF,
614                      mpeg1_lum_dc_uni[diff + 255] >> 8);
615         else
616             put_bits(&s->pb,
617                      mpeg1_chr_dc_uni[diff + 255] & 0xFF,
618                      mpeg1_chr_dc_uni[diff + 255] >> 8);
619     }
620 }
621
622 static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
623 {
624     int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
625     int code, component;
626     const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
627
628     last_index = s->block_last_index[n];
629
630     /* DC coef */
631     if (s->mb_intra) {
632         component = (n <= 3 ? 0 : (n & 1) + 1);
633         dc        = block[0];                   /* overflow is impossible */
634         diff      = dc - s->last_dc[component];
635         encode_dc(s, diff, component);
636         s->last_dc[component] = dc;
637         i = 1;
638         if (s->intra_vlc_format)
639             table_vlc = ff_rl_mpeg2.table_vlc;
640     } else {
641         /* encode the first coefficient: needs to be done here because
642          * it is handled slightly differently */
643         level = block[0];
644         if (abs(level) == 1) {
645             code = ((uint32_t)level >> 31);     /* the sign bit */
646             put_bits(&s->pb, 2, code | 0x02);
647             i = 1;
648         } else {
649             i             = 0;
650             last_non_zero = -1;
651             goto next_coef;
652         }
653     }
654
655     /* now quantify & encode AC coefs */
656     last_non_zero = i - 1;
657
658     for (; i <= last_index; i++) {
659         j     = s->intra_scantable.permutated[i];
660         level = block[j];
661
662 next_coef:
663         /* encode using VLC */
664         if (level != 0) {
665             run = i - last_non_zero - 1;
666
667             alevel = level;
668             MASK_ABS(sign, alevel);
669             sign &= 1;
670
671             if (alevel <= mpeg1_max_level[0][run]) {
672                 code = mpeg1_index_run[0][run] + alevel - 1;
673                 /* store the VLC & sign at once */
674                 put_bits(&s->pb, table_vlc[code][1] + 1,
675                          (table_vlc[code][0] << 1) + sign);
676             } else {
677                 /* escape seems to be pretty rare <5% so I do not optimize it */
678                 put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
679                 /* escape: only clip in this case */
680                 put_bits(&s->pb, 6, run);
681                 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
682                     if (alevel < 128) {
683                         put_sbits(&s->pb, 8, level);
684                     } else {
685                         if (level < 0)
686                             put_bits(&s->pb, 16, 0x8001 + level + 255);
687                         else
688                             put_sbits(&s->pb, 16, level);
689                     }
690                 } else {
691                     put_sbits(&s->pb, 12, level);
692                 }
693             }
694             last_non_zero = i;
695         }
696     }
697     /* end of block */
698     put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
699 }
700
701 static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
702                                                       int16_t block[8][64],
703                                                       int motion_x, int motion_y,
704                                                       int mb_block_count)
705 {
706     int i, cbp;
707     const int mb_x     = s->mb_x;
708     const int mb_y     = s->mb_y;
709     const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
710
711     /* compute cbp */
712     cbp = 0;
713     for (i = 0; i < mb_block_count; i++)
714         if (s->block_last_index[i] >= 0)
715             cbp |= 1 << (mb_block_count - 1 - i);
716
717     if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
718         (mb_x != s->mb_width - 1 ||
719          (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
720         ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
721          (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
722           (((s->mv_dir & MV_DIR_FORWARD)
723             ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
724                (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
725            ((s->mv_dir & MV_DIR_BACKWARD)
726             ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
727                (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
728         s->mb_skip_run++;
729         s->qscale -= s->dquant;
730         s->skip_count++;
731         s->misc_bits++;
732         s->last_bits++;
733         if (s->pict_type == AV_PICTURE_TYPE_P) {
734             s->last_mv[0][0][0] =
735             s->last_mv[0][0][1] =
736             s->last_mv[0][1][0] =
737             s->last_mv[0][1][1] = 0;
738         }
739     } else {
740         if (first_mb) {
741             av_assert0(s->mb_skip_run == 0);
742             encode_mb_skip_run(s, s->mb_x);
743         } else {
744             encode_mb_skip_run(s, s->mb_skip_run);
745         }
746
747         if (s->pict_type == AV_PICTURE_TYPE_I) {
748             if (s->dquant && cbp) {
749                 /* macroblock_type: macroblock_quant = 1 */
750                 put_mb_modes(s, 2, 1, 0, 0);
751                 put_qscale(s);
752             } else {
753                 /* macroblock_type: macroblock_quant = 0 */
754                 put_mb_modes(s, 1, 1, 0, 0);
755                 s->qscale -= s->dquant;
756             }
757             s->misc_bits += get_bits_diff(s);
758             s->i_count++;
759         } else if (s->mb_intra) {
760             if (s->dquant && cbp) {
761                 put_mb_modes(s, 6, 0x01, 0, 0);
762                 put_qscale(s);
763             } else {
764                 put_mb_modes(s, 5, 0x03, 0, 0);
765                 s->qscale -= s->dquant;
766             }
767             s->misc_bits += get_bits_diff(s);
768             s->i_count++;
769             memset(s->last_mv, 0, sizeof(s->last_mv));
770         } else if (s->pict_type == AV_PICTURE_TYPE_P) {
771             if (s->mv_type == MV_TYPE_16X16) {
772                 if (cbp != 0) {
773                     if ((motion_x | motion_y) == 0) {
774                         if (s->dquant) {
775                             /* macroblock_pattern & quant */
776                             put_mb_modes(s, 5, 1, 0, 0);
777                             put_qscale(s);
778                         } else {
779                             /* macroblock_pattern only */
780                             put_mb_modes(s, 2, 1, 0, 0);
781                         }
782                         s->misc_bits += get_bits_diff(s);
783                     } else {
784                         if (s->dquant) {
785                             put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
786                             put_qscale(s);
787                         } else {
788                             put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
789                         }
790                         s->misc_bits += get_bits_diff(s);
791                         // RAL: f_code parameter added
792                         mpeg1_encode_motion(s,
793                                             motion_x - s->last_mv[0][0][0],
794                                             s->f_code);
795                         // RAL: f_code parameter added
796                         mpeg1_encode_motion(s,
797                                             motion_y - s->last_mv[0][0][1],
798                                             s->f_code);
799                         s->mv_bits += get_bits_diff(s);
800                     }
801                 } else {
802                     put_bits(&s->pb, 3, 1);         /* motion only */
803                     if (!s->frame_pred_frame_dct)
804                         put_bits(&s->pb, 2, 2);     /* motion_type: frame */
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->qscale  -= s->dquant;
815                     s->mv_bits += get_bits_diff(s);
816                 }
817                 s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
818                 s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
819             } else {
820                 av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
821
822                 if (cbp) {
823                     if (s->dquant) {
824                         put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
825                         put_qscale(s);
826                     } else {
827                         put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
828                     }
829                 } else {
830                     put_bits(&s->pb, 3, 1);             /* motion only */
831                     put_bits(&s->pb, 2, 1);             /* motion_type: field */
832                     s->qscale -= s->dquant;
833                 }
834                 s->misc_bits += get_bits_diff(s);
835                 for (i = 0; i < 2; i++) {
836                     put_bits(&s->pb, 1, s->field_select[0][i]);
837                     mpeg1_encode_motion(s,
838                                         s->mv[0][i][0] - s->last_mv[0][i][0],
839                                         s->f_code);
840                     mpeg1_encode_motion(s,
841                                         s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
842                                         s->f_code);
843                     s->last_mv[0][i][0] = s->mv[0][i][0];
844                     s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
845                 }
846                 s->mv_bits += get_bits_diff(s);
847             }
848             if (cbp) {
849                 if (s->chroma_y_shift) {
850                     put_bits(&s->pb,
851                              ff_mpeg12_mbPatTable[cbp][1],
852                              ff_mpeg12_mbPatTable[cbp][0]);
853                 } else {
854                     put_bits(&s->pb,
855                              ff_mpeg12_mbPatTable[cbp >> 2][1],
856                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
857                     put_sbits(&s->pb, 2, cbp);
858                 }
859             }
860             s->f_count++;
861         } else {
862             if (s->mv_type == MV_TYPE_16X16) {
863                 if (cbp) {                      // With coded bloc pattern
864                     if (s->dquant) {
865                         if (s->mv_dir == MV_DIR_FORWARD)
866                             put_mb_modes(s, 6, 3, 1, 0);
867                         else
868                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
869                         put_qscale(s);
870                     } else {
871                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
872                     }
873                 } else {                        // No coded bloc pattern
874                     put_bits(&s->pb, 5 - s->mv_dir, 2);
875                     if (!s->frame_pred_frame_dct)
876                         put_bits(&s->pb, 2, 2); /* motion_type: frame */
877                     s->qscale -= s->dquant;
878                 }
879                 s->misc_bits += get_bits_diff(s);
880                 if (s->mv_dir & MV_DIR_FORWARD) {
881                     mpeg1_encode_motion(s,
882                                         s->mv[0][0][0] - s->last_mv[0][0][0],
883                                         s->f_code);
884                     mpeg1_encode_motion(s,
885                                         s->mv[0][0][1] - s->last_mv[0][0][1],
886                                         s->f_code);
887                     s->last_mv[0][0][0] =
888                     s->last_mv[0][1][0] = s->mv[0][0][0];
889                     s->last_mv[0][0][1] =
890                     s->last_mv[0][1][1] = s->mv[0][0][1];
891                     s->f_count++;
892                 }
893                 if (s->mv_dir & MV_DIR_BACKWARD) {
894                     mpeg1_encode_motion(s,
895                                         s->mv[1][0][0] - s->last_mv[1][0][0],
896                                         s->b_code);
897                     mpeg1_encode_motion(s,
898                                         s->mv[1][0][1] - s->last_mv[1][0][1],
899                                         s->b_code);
900                     s->last_mv[1][0][0] =
901                     s->last_mv[1][1][0] = s->mv[1][0][0];
902                     s->last_mv[1][0][1] =
903                     s->last_mv[1][1][1] = s->mv[1][0][1];
904                     s->b_count++;
905                 }
906             } else {
907                 av_assert2(s->mv_type == MV_TYPE_FIELD);
908                 av_assert2(!s->frame_pred_frame_dct);
909                 if (cbp) {                      // With coded bloc pattern
910                     if (s->dquant) {
911                         if (s->mv_dir == MV_DIR_FORWARD)
912                             put_mb_modes(s, 6, 3, 1, 1);
913                         else
914                             put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
915                         put_qscale(s);
916                     } else {
917                         put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
918                     }
919                 } else {                        // No coded bloc pattern
920                     put_bits(&s->pb, 5 - s->mv_dir, 2);
921                     put_bits(&s->pb, 2, 1);     /* motion_type: field */
922                     s->qscale -= s->dquant;
923                 }
924                 s->misc_bits += get_bits_diff(s);
925                 if (s->mv_dir & MV_DIR_FORWARD) {
926                     for (i = 0; i < 2; i++) {
927                         put_bits(&s->pb, 1, s->field_select[0][i]);
928                         mpeg1_encode_motion(s,
929                                             s->mv[0][i][0] - s->last_mv[0][i][0],
930                                             s->f_code);
931                         mpeg1_encode_motion(s,
932                                             s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
933                                             s->f_code);
934                         s->last_mv[0][i][0] = s->mv[0][i][0];
935                         s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
936                     }
937                     s->f_count++;
938                 }
939                 if (s->mv_dir & MV_DIR_BACKWARD) {
940                     for (i = 0; i < 2; i++) {
941                         put_bits(&s->pb, 1, s->field_select[1][i]);
942                         mpeg1_encode_motion(s,
943                                             s->mv[1][i][0] - s->last_mv[1][i][0],
944                                             s->b_code);
945                         mpeg1_encode_motion(s,
946                                             s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
947                                             s->b_code);
948                         s->last_mv[1][i][0] = s->mv[1][i][0];
949                         s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
950                     }
951                     s->b_count++;
952                 }
953             }
954             s->mv_bits += get_bits_diff(s);
955             if (cbp) {
956                 if (s->chroma_y_shift) {
957                     put_bits(&s->pb,
958                              ff_mpeg12_mbPatTable[cbp][1],
959                              ff_mpeg12_mbPatTable[cbp][0]);
960                 } else {
961                     put_bits(&s->pb,
962                              ff_mpeg12_mbPatTable[cbp >> 2][1],
963                              ff_mpeg12_mbPatTable[cbp >> 2][0]);
964                     put_sbits(&s->pb, 2, cbp);
965                 }
966             }
967         }
968         for (i = 0; i < mb_block_count; i++)
969             if (cbp & (1 << (mb_block_count - 1 - i)))
970                 mpeg1_encode_block(s, block[i], i);
971         s->mb_skip_run = 0;
972         if (s->mb_intra)
973             s->i_tex_bits += get_bits_diff(s);
974         else
975             s->p_tex_bits += get_bits_diff(s);
976     }
977 }
978
979 void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
980                         int motion_x, int motion_y)
981 {
982     if (s->chroma_format == CHROMA_420)
983         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
984     else
985         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
986 }
987
988 av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
989 {
990     static int done = 0;
991
992     ff_mpeg12_common_init(s);
993
994     if (!done) {
995         int f_code;
996         int mv;
997         int i;
998
999         done = 1;
1000         ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
1001         ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
1002
1003         for (i = 0; i < 64; i++) {
1004             mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
1005             mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
1006         }
1007
1008         init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
1009         if (s->intra_vlc_format)
1010             init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
1011
1012         /* build unified dc encoding tables */
1013         for (i = -255; i < 256; i++) {
1014             int adiff, index;
1015             int bits, code;
1016             int diff = i;
1017
1018             adiff = FFABS(diff);
1019             if (diff < 0)
1020                 diff--;
1021             index = av_log2(2 * adiff);
1022
1023             bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
1024             code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
1025                    (diff & ((1 << index) - 1));
1026             mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
1027
1028             bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
1029             code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
1030                    (diff & ((1 << index) - 1));
1031             mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
1032         }
1033
1034         for (f_code = 1; f_code <= MAX_FCODE; f_code++)
1035             for (mv = -MAX_MV; mv <= MAX_MV; mv++) {
1036                 int len;
1037
1038                 if (mv == 0) {
1039                     len = ff_mpeg12_mbMotionVectorTable[0][1];
1040                 } else {
1041                     int val, bit_size, code;
1042
1043                     bit_size = f_code - 1;
1044
1045                     val = mv;
1046                     if (val < 0)
1047                         val = -val;
1048                     val--;
1049                     code = (val >> bit_size) + 1;
1050                     if (code < 17)
1051                         len = ff_mpeg12_mbMotionVectorTable[code][1] +
1052                               1 + bit_size;
1053                     else
1054                         len = ff_mpeg12_mbMotionVectorTable[16][1] +
1055                               2 + bit_size;
1056                 }
1057
1058                 mv_penalty[f_code][mv + MAX_MV] = len;
1059             }
1060
1061
1062         for (f_code = MAX_FCODE; f_code > 0; f_code--)
1063             for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
1064                 fcode_tab[mv + MAX_MV] = f_code;
1065     }
1066     s->me.mv_penalty = mv_penalty;
1067     s->fcode_tab     = fcode_tab;
1068     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
1069         s->min_qcoeff = -255;
1070         s->max_qcoeff = 255;
1071     } else {
1072         s->min_qcoeff = -2047;
1073         s->max_qcoeff = 2047;
1074     }
1075     if (s->intra_vlc_format) {
1076         s->intra_ac_vlc_length      =
1077         s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
1078     } else {
1079         s->intra_ac_vlc_length      =
1080         s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1081     }
1082     s->inter_ac_vlc_length      =
1083     s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
1084 }
1085
1086 #define OFFSET(x) offsetof(MpegEncContext, x)
1087 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
1088 #define COMMON_OPTS                                                           \
1089     { "gop_timecode",        "MPEG GOP Timecode in hh:mm:ss[:;.]ff format",   \
1090       OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\
1091     { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
1092       OFFSET(intra_vlc_format),    AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
1093     { "drop_frame_timecode", "Timecode is in drop frame format.",             \
1094       OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
1095     { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
1096       OFFSET(scan_offset),         AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
1097
1098 static const AVOption mpeg1_options[] = {
1099     COMMON_OPTS
1100     FF_MPV_COMMON_OPTS
1101     { NULL },
1102 };
1103
1104 static const AVOption mpeg2_options[] = {
1105     COMMON_OPTS
1106     { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
1107     { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
1108     FF_MPV_COMMON_OPTS
1109     { NULL },
1110 };
1111
1112 #define mpeg12_class(x)                                 \
1113 static const AVClass mpeg ## x ## _class = {            \
1114     .class_name = "mpeg" # x "video encoder",           \
1115     .item_name  = av_default_item_name,                 \
1116     .option     = mpeg ## x ## _options,                \
1117     .version    = LIBAVUTIL_VERSION_INT,                \
1118 };
1119
1120 mpeg12_class(1)
1121 mpeg12_class(2)
1122
1123 AVCodec ff_mpeg1video_encoder = {
1124     .name                 = "mpeg1video",
1125     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
1126     .type                 = AVMEDIA_TYPE_VIDEO,
1127     .id                   = AV_CODEC_ID_MPEG1VIDEO,
1128     .priv_data_size       = sizeof(MpegEncContext),
1129     .init                 = encode_init,
1130     .encode2              = ff_MPV_encode_picture,
1131     .close                = ff_MPV_encode_end,
1132     .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
1133     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1134                                                            AV_PIX_FMT_NONE },
1135     .capabilities         = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
1136     .priv_class           = &mpeg1_class,
1137 };
1138
1139 AVCodec ff_mpeg2video_encoder = {
1140     .name                 = "mpeg2video",
1141     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
1142     .type                 = AVMEDIA_TYPE_VIDEO,
1143     .id                   = AV_CODEC_ID_MPEG2VIDEO,
1144     .priv_data_size       = sizeof(MpegEncContext),
1145     .init                 = encode_init,
1146     .encode2              = ff_MPV_encode_picture,
1147     .close                = ff_MPV_encode_end,
1148     .supported_framerates = ff_mpeg2_frame_rate_tab,
1149     .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
1150                                                            AV_PIX_FMT_YUV422P,
1151                                                            AV_PIX_FMT_NONE },
1152     .capabilities         = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
1153     .priv_class           = &mpeg2_class,
1154 };