Commit | Line | Data |
---|---|---|
2ba45a60 DM |
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 multiples 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 | AVFrameSideData *side_data; | |
315 | int width = s->width; | |
316 | int height = s->height; | |
317 | int use_seq_disp_ext; | |
318 | ||
319 | put_header(s, EXT_START_CODE); | |
320 | put_bits(&s->pb, 4, 1); // seq ext | |
321 | ||
322 | put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile | |
323 | ||
324 | put_bits(&s->pb, 3, s->avctx->profile); // profile | |
325 | put_bits(&s->pb, 4, s->avctx->level); // level | |
326 | ||
327 | put_bits(&s->pb, 1, s->progressive_sequence); | |
328 | put_bits(&s->pb, 2, s->chroma_format); | |
329 | put_bits(&s->pb, 2, s->width >> 12); | |
330 | put_bits(&s->pb, 2, s->height >> 12); | |
331 | put_bits(&s->pb, 12, v >> 18); // bitrate ext | |
332 | put_bits(&s->pb, 1, 1); // marker | |
333 | put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext | |
334 | put_bits(&s->pb, 1, s->low_delay); | |
335 | put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n | |
336 | put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d | |
337 | ||
338 | side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN); | |
339 | if (side_data) { | |
340 | AVPanScan *pan_scan = (AVPanScan *)side_data->data; | |
341 | if (pan_scan->width && pan_scan->height) { | |
342 | width = pan_scan->width >> 4; | |
343 | height = pan_scan->height >> 4; | |
344 | } | |
345 | } | |
346 | ||
347 | use_seq_disp_ext = (width != s->width || | |
348 | height != s->height || | |
349 | s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || | |
350 | s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED || | |
351 | s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED); | |
352 | ||
353 | if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) { | |
354 | put_header(s, EXT_START_CODE); | |
355 | put_bits(&s->pb, 4, 2); // sequence display extension | |
356 | put_bits(&s->pb, 3, 0); // video_format: 0 is components | |
357 | put_bits(&s->pb, 1, 1); // colour_description | |
358 | put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries | |
359 | put_bits(&s->pb, 8, s->avctx->color_trc); // transfer_characteristics | |
360 | put_bits(&s->pb, 8, s->avctx->colorspace); // matrix_coefficients | |
361 | put_bits(&s->pb, 14, width); // display_horizontal_size | |
362 | put_bits(&s->pb, 1, 1); // marker_bit | |
363 | put_bits(&s->pb, 14, height); // display_vertical_size | |
364 | put_bits(&s->pb, 3, 0); // remaining 3 bits are zero padding | |
365 | } | |
366 | } | |
367 | ||
368 | put_header(s, GOP_START_CODE); | |
369 | put_bits(&s->pb, 1, s->drop_frame_timecode); // drop frame flag | |
370 | /* time code: we must convert from the real frame rate to a | |
371 | * fake MPEG frame rate in case of low frame rate */ | |
372 | fps = (framerate.num + framerate.den / 2) / framerate.den; | |
373 | time_code = s->current_picture_ptr->f->coded_picture_number + | |
374 | s->avctx->timecode_frame_start; | |
375 | ||
376 | s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number; | |
377 | ||
378 | av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME)); | |
379 | if (s->drop_frame_timecode) | |
380 | time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps); | |
381 | ||
382 | put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24)); | |
383 | put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60)); | |
384 | put_bits(&s->pb, 1, 1); | |
385 | put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60)); | |
386 | put_bits(&s->pb, 6, (uint32_t)((time_code % fps))); | |
387 | put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number); | |
388 | put_bits(&s->pb, 1, 0); // broken link | |
389 | } | |
390 | } | |
391 | ||
392 | static inline void encode_mb_skip_run(MpegEncContext *s, int run) | |
393 | { | |
394 | while (run >= 33) { | |
395 | put_bits(&s->pb, 11, 0x008); | |
396 | run -= 33; | |
397 | } | |
398 | put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1], | |
399 | ff_mpeg12_mbAddrIncrTable[run][0]); | |
400 | } | |
401 | ||
402 | static av_always_inline void put_qscale(MpegEncContext *s) | |
403 | { | |
404 | if (s->q_scale_type) { | |
405 | av_assert2(s->qscale >= 1 && s->qscale <= 12); | |
406 | put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]); | |
407 | } else { | |
408 | put_bits(&s->pb, 5, s->qscale); | |
409 | } | |
410 | } | |
411 | ||
412 | void ff_mpeg1_encode_slice_header(MpegEncContext *s) | |
413 | { | |
414 | if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) { | |
415 | put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127)); | |
416 | /* slice_vertical_position_extension */ | |
417 | put_bits(&s->pb, 3, s->mb_y >> 7); | |
418 | } else { | |
419 | put_header(s, SLICE_MIN_START_CODE + s->mb_y); | |
420 | } | |
421 | put_qscale(s); | |
422 | /* slice extra information */ | |
423 | put_bits(&s->pb, 1, 0); | |
424 | } | |
425 | ||
426 | void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) | |
427 | { | |
428 | AVFrameSideData *side_data; | |
429 | mpeg1_encode_sequence_header(s); | |
430 | ||
431 | /* mpeg1 picture header */ | |
432 | put_header(s, PICTURE_START_CODE); | |
433 | /* temporal reference */ | |
434 | ||
435 | // RAL: s->picture_number instead of s->fake_picture_number | |
436 | put_bits(&s->pb, 10, | |
437 | (s->picture_number - s->gop_picture_number) & 0x3ff); | |
438 | put_bits(&s->pb, 3, s->pict_type); | |
439 | ||
440 | s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8; | |
441 | put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */ | |
442 | ||
443 | // RAL: Forward f_code also needed for B-frames | |
444 | if (s->pict_type == AV_PICTURE_TYPE_P || | |
445 | s->pict_type == AV_PICTURE_TYPE_B) { | |
446 | put_bits(&s->pb, 1, 0); /* half pel coordinates */ | |
447 | if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) | |
448 | put_bits(&s->pb, 3, s->f_code); /* forward_f_code */ | |
449 | else | |
450 | put_bits(&s->pb, 3, 7); /* forward_f_code */ | |
451 | } | |
452 | ||
453 | // RAL: Backward f_code necessary for B-frames | |
454 | if (s->pict_type == AV_PICTURE_TYPE_B) { | |
455 | put_bits(&s->pb, 1, 0); /* half pel coordinates */ | |
456 | if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) | |
457 | put_bits(&s->pb, 3, s->b_code); /* backward_f_code */ | |
458 | else | |
459 | put_bits(&s->pb, 3, 7); /* backward_f_code */ | |
460 | } | |
461 | ||
462 | put_bits(&s->pb, 1, 0); /* extra bit picture */ | |
463 | ||
464 | s->frame_pred_frame_dct = 1; | |
465 | if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { | |
466 | put_header(s, EXT_START_CODE); | |
467 | put_bits(&s->pb, 4, 8); /* pic ext */ | |
468 | if (s->pict_type == AV_PICTURE_TYPE_P || | |
469 | s->pict_type == AV_PICTURE_TYPE_B) { | |
470 | put_bits(&s->pb, 4, s->f_code); | |
471 | put_bits(&s->pb, 4, s->f_code); | |
472 | } else { | |
473 | put_bits(&s->pb, 8, 255); | |
474 | } | |
475 | if (s->pict_type == AV_PICTURE_TYPE_B) { | |
476 | put_bits(&s->pb, 4, s->b_code); | |
477 | put_bits(&s->pb, 4, s->b_code); | |
478 | } else { | |
479 | put_bits(&s->pb, 8, 255); | |
480 | } | |
481 | put_bits(&s->pb, 2, s->intra_dc_precision); | |
482 | ||
483 | av_assert0(s->picture_structure == PICT_FRAME); | |
484 | put_bits(&s->pb, 2, s->picture_structure); | |
485 | if (s->progressive_sequence) | |
486 | put_bits(&s->pb, 1, 0); /* no repeat */ | |
487 | else | |
488 | put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first); | |
489 | /* XXX: optimize the generation of this flag with entropy measures */ | |
490 | s->frame_pred_frame_dct = s->progressive_sequence; | |
491 | ||
492 | put_bits(&s->pb, 1, s->frame_pred_frame_dct); | |
493 | put_bits(&s->pb, 1, s->concealment_motion_vectors); | |
494 | put_bits(&s->pb, 1, s->q_scale_type); | |
495 | put_bits(&s->pb, 1, s->intra_vlc_format); | |
496 | put_bits(&s->pb, 1, s->alternate_scan); | |
497 | put_bits(&s->pb, 1, s->repeat_first_field); | |
498 | s->progressive_frame = s->progressive_sequence; | |
499 | /* chroma_420_type */ | |
500 | put_bits(&s->pb, 1, s->chroma_format == | |
501 | CHROMA_420 ? s->progressive_frame : 0); | |
502 | put_bits(&s->pb, 1, s->progressive_frame); | |
503 | put_bits(&s->pb, 1, 0); /* composite_display_flag */ | |
504 | } | |
505 | if (s->scan_offset) { | |
506 | int i; | |
507 | ||
508 | put_header(s, USER_START_CODE); | |
509 | for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++) | |
510 | put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]); | |
511 | } | |
512 | side_data = av_frame_get_side_data(s->current_picture_ptr->f, | |
513 | AV_FRAME_DATA_STEREO3D); | |
514 | if (side_data) { | |
515 | AVStereo3D *stereo = (AVStereo3D *)side_data->data; | |
516 | uint8_t fpa_type; | |
517 | ||
518 | switch (stereo->type) { | |
519 | case AV_STEREO3D_SIDEBYSIDE: | |
520 | fpa_type = 0x03; | |
521 | break; | |
522 | case AV_STEREO3D_TOPBOTTOM: | |
523 | fpa_type = 0x04; | |
524 | break; | |
525 | case AV_STEREO3D_2D: | |
526 | fpa_type = 0x08; | |
527 | break; | |
528 | case AV_STEREO3D_SIDEBYSIDE_QUINCUNX: | |
529 | fpa_type = 0x23; | |
530 | break; | |
531 | default: | |
532 | fpa_type = 0; | |
533 | break; | |
534 | } | |
535 | ||
536 | if (fpa_type != 0) { | |
537 | put_header(s, USER_START_CODE); | |
538 | put_bits(&s->pb, 8, 'J'); // S3D_video_format_signaling_identifier | |
539 | put_bits(&s->pb, 8, 'P'); | |
540 | put_bits(&s->pb, 8, '3'); | |
541 | put_bits(&s->pb, 8, 'D'); | |
542 | put_bits(&s->pb, 8, 0x03); // S3D_video_format_length | |
543 | ||
544 | put_bits(&s->pb, 1, 1); // reserved_bit | |
545 | put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type | |
546 | put_bits(&s->pb, 8, 0x04); // reserved_data[0] | |
547 | put_bits(&s->pb, 8, 0xFF); // reserved_data[1] | |
548 | } | |
549 | } | |
550 | ||
551 | s->mb_y = 0; | |
552 | ff_mpeg1_encode_slice_header(s); | |
553 | } | |
554 | ||
555 | static inline void put_mb_modes(MpegEncContext *s, int n, int bits, | |
556 | int has_mv, int field_motion) | |
557 | { | |
558 | put_bits(&s->pb, n, bits); | |
559 | if (!s->frame_pred_frame_dct) { | |
560 | if (has_mv) | |
561 | /* motion_type: frame/field */ | |
562 | put_bits(&s->pb, 2, 2 - field_motion); | |
563 | put_bits(&s->pb, 1, s->interlaced_dct); | |
564 | } | |
565 | } | |
566 | ||
567 | // RAL: Parameter added: f_or_b_code | |
568 | static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code) | |
569 | { | |
570 | if (val == 0) { | |
571 | /* zero vector */ | |
572 | put_bits(&s->pb, | |
573 | ff_mpeg12_mbMotionVectorTable[0][1], | |
574 | ff_mpeg12_mbMotionVectorTable[0][0]); | |
575 | } else { | |
576 | int code, sign, bits; | |
577 | int bit_size = f_or_b_code - 1; | |
578 | int range = 1 << bit_size; | |
579 | /* modulo encoding */ | |
580 | val = sign_extend(val, 5 + bit_size); | |
581 | ||
582 | if (val >= 0) { | |
583 | val--; | |
584 | code = (val >> bit_size) + 1; | |
585 | bits = val & (range - 1); | |
586 | sign = 0; | |
587 | } else { | |
588 | val = -val; | |
589 | val--; | |
590 | code = (val >> bit_size) + 1; | |
591 | bits = val & (range - 1); | |
592 | sign = 1; | |
593 | } | |
594 | ||
595 | av_assert2(code > 0 && code <= 16); | |
596 | ||
597 | put_bits(&s->pb, | |
598 | ff_mpeg12_mbMotionVectorTable[code][1], | |
599 | ff_mpeg12_mbMotionVectorTable[code][0]); | |
600 | ||
601 | put_bits(&s->pb, 1, sign); | |
602 | if (bit_size > 0) | |
603 | put_bits(&s->pb, bit_size, bits); | |
604 | } | |
605 | } | |
606 | ||
607 | static inline void encode_dc(MpegEncContext *s, int diff, int component) | |
608 | { | |
f6fa7814 DM |
609 | unsigned int diff_u = diff + 255; |
610 | if (diff_u >= 511) { | |
2ba45a60 DM |
611 | int index; |
612 | ||
613 | if (diff < 0) { | |
614 | index = av_log2_16bit(-2 * diff); | |
615 | diff--; | |
616 | } else { | |
617 | index = av_log2_16bit(2 * diff); | |
618 | } | |
619 | if (component == 0) | |
620 | put_bits(&s->pb, | |
621 | ff_mpeg12_vlc_dc_lum_bits[index] + index, | |
622 | (ff_mpeg12_vlc_dc_lum_code[index] << index) + | |
623 | (diff & ((1 << index) - 1))); | |
624 | else | |
625 | put_bits(&s->pb, | |
626 | ff_mpeg12_vlc_dc_chroma_bits[index] + index, | |
627 | (ff_mpeg12_vlc_dc_chroma_code[index] << index) + | |
628 | (diff & ((1 << index) - 1))); | |
629 | } else { | |
630 | if (component == 0) | |
631 | put_bits(&s->pb, | |
632 | mpeg1_lum_dc_uni[diff + 255] & 0xFF, | |
633 | mpeg1_lum_dc_uni[diff + 255] >> 8); | |
634 | else | |
635 | put_bits(&s->pb, | |
636 | mpeg1_chr_dc_uni[diff + 255] & 0xFF, | |
637 | mpeg1_chr_dc_uni[diff + 255] >> 8); | |
638 | } | |
639 | } | |
640 | ||
641 | static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n) | |
642 | { | |
643 | int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign; | |
644 | int code, component; | |
645 | const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc; | |
646 | ||
647 | last_index = s->block_last_index[n]; | |
648 | ||
649 | /* DC coef */ | |
650 | if (s->mb_intra) { | |
651 | component = (n <= 3 ? 0 : (n & 1) + 1); | |
652 | dc = block[0]; /* overflow is impossible */ | |
653 | diff = dc - s->last_dc[component]; | |
654 | encode_dc(s, diff, component); | |
655 | s->last_dc[component] = dc; | |
656 | i = 1; | |
657 | if (s->intra_vlc_format) | |
658 | table_vlc = ff_rl_mpeg2.table_vlc; | |
659 | } else { | |
660 | /* encode the first coefficient: needs to be done here because | |
661 | * it is handled slightly differently */ | |
662 | level = block[0]; | |
663 | if (abs(level) == 1) { | |
664 | code = ((uint32_t)level >> 31); /* the sign bit */ | |
665 | put_bits(&s->pb, 2, code | 0x02); | |
666 | i = 1; | |
667 | } else { | |
668 | i = 0; | |
669 | last_non_zero = -1; | |
670 | goto next_coef; | |
671 | } | |
672 | } | |
673 | ||
674 | /* now quantify & encode AC coefs */ | |
675 | last_non_zero = i - 1; | |
676 | ||
677 | for (; i <= last_index; i++) { | |
678 | j = s->intra_scantable.permutated[i]; | |
679 | level = block[j]; | |
680 | ||
681 | next_coef: | |
682 | /* encode using VLC */ | |
683 | if (level != 0) { | |
684 | run = i - last_non_zero - 1; | |
685 | ||
686 | alevel = level; | |
687 | MASK_ABS(sign, alevel); | |
688 | sign &= 1; | |
689 | ||
690 | if (alevel <= mpeg1_max_level[0][run]) { | |
691 | code = mpeg1_index_run[0][run] + alevel - 1; | |
692 | /* store the VLC & sign at once */ | |
693 | put_bits(&s->pb, table_vlc[code][1] + 1, | |
694 | (table_vlc[code][0] << 1) + sign); | |
695 | } else { | |
696 | /* escape seems to be pretty rare <5% so I do not optimize it */ | |
697 | put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]); | |
698 | /* escape: only clip in this case */ | |
699 | put_bits(&s->pb, 6, run); | |
700 | if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) { | |
701 | if (alevel < 128) { | |
702 | put_sbits(&s->pb, 8, level); | |
703 | } else { | |
704 | if (level < 0) | |
705 | put_bits(&s->pb, 16, 0x8001 + level + 255); | |
706 | else | |
707 | put_sbits(&s->pb, 16, level); | |
708 | } | |
709 | } else { | |
710 | put_sbits(&s->pb, 12, level); | |
711 | } | |
712 | } | |
713 | last_non_zero = i; | |
714 | } | |
715 | } | |
716 | /* end of block */ | |
717 | put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]); | |
718 | } | |
719 | ||
720 | static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, | |
721 | int16_t block[8][64], | |
722 | int motion_x, int motion_y, | |
723 | int mb_block_count) | |
724 | { | |
725 | int i, cbp; | |
726 | const int mb_x = s->mb_x; | |
727 | const int mb_y = s->mb_y; | |
728 | const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y; | |
729 | ||
730 | /* compute cbp */ | |
731 | cbp = 0; | |
732 | for (i = 0; i < mb_block_count; i++) | |
733 | if (s->block_last_index[i] >= 0) | |
734 | cbp |= 1 << (mb_block_count - 1 - i); | |
735 | ||
736 | if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 && | |
737 | (mb_x != s->mb_width - 1 || | |
738 | (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) && | |
739 | ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) || | |
740 | (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir && | |
741 | (((s->mv_dir & MV_DIR_FORWARD) | |
742 | ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) | | |
743 | (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) | | |
744 | ((s->mv_dir & MV_DIR_BACKWARD) | |
745 | ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) | | |
746 | (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) { | |
747 | s->mb_skip_run++; | |
748 | s->qscale -= s->dquant; | |
749 | s->skip_count++; | |
750 | s->misc_bits++; | |
751 | s->last_bits++; | |
752 | if (s->pict_type == AV_PICTURE_TYPE_P) { | |
753 | s->last_mv[0][0][0] = | |
754 | s->last_mv[0][0][1] = | |
755 | s->last_mv[0][1][0] = | |
756 | s->last_mv[0][1][1] = 0; | |
757 | } | |
758 | } else { | |
759 | if (first_mb) { | |
760 | av_assert0(s->mb_skip_run == 0); | |
761 | encode_mb_skip_run(s, s->mb_x); | |
762 | } else { | |
763 | encode_mb_skip_run(s, s->mb_skip_run); | |
764 | } | |
765 | ||
766 | if (s->pict_type == AV_PICTURE_TYPE_I) { | |
767 | if (s->dquant && cbp) { | |
768 | /* macroblock_type: macroblock_quant = 1 */ | |
769 | put_mb_modes(s, 2, 1, 0, 0); | |
770 | put_qscale(s); | |
771 | } else { | |
772 | /* macroblock_type: macroblock_quant = 0 */ | |
773 | put_mb_modes(s, 1, 1, 0, 0); | |
774 | s->qscale -= s->dquant; | |
775 | } | |
776 | s->misc_bits += get_bits_diff(s); | |
777 | s->i_count++; | |
778 | } else if (s->mb_intra) { | |
779 | if (s->dquant && cbp) { | |
780 | put_mb_modes(s, 6, 0x01, 0, 0); | |
781 | put_qscale(s); | |
782 | } else { | |
783 | put_mb_modes(s, 5, 0x03, 0, 0); | |
784 | s->qscale -= s->dquant; | |
785 | } | |
786 | s->misc_bits += get_bits_diff(s); | |
787 | s->i_count++; | |
788 | memset(s->last_mv, 0, sizeof(s->last_mv)); | |
789 | } else if (s->pict_type == AV_PICTURE_TYPE_P) { | |
790 | if (s->mv_type == MV_TYPE_16X16) { | |
791 | if (cbp != 0) { | |
792 | if ((motion_x | motion_y) == 0) { | |
793 | if (s->dquant) { | |
794 | /* macroblock_pattern & quant */ | |
795 | put_mb_modes(s, 5, 1, 0, 0); | |
796 | put_qscale(s); | |
797 | } else { | |
798 | /* macroblock_pattern only */ | |
799 | put_mb_modes(s, 2, 1, 0, 0); | |
800 | } | |
801 | s->misc_bits += get_bits_diff(s); | |
802 | } else { | |
803 | if (s->dquant) { | |
804 | put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */ | |
805 | put_qscale(s); | |
806 | } else { | |
807 | put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */ | |
808 | } | |
809 | s->misc_bits += get_bits_diff(s); | |
810 | // RAL: f_code parameter added | |
811 | mpeg1_encode_motion(s, | |
812 | motion_x - s->last_mv[0][0][0], | |
813 | s->f_code); | |
814 | // RAL: f_code parameter added | |
815 | mpeg1_encode_motion(s, | |
816 | motion_y - s->last_mv[0][0][1], | |
817 | s->f_code); | |
818 | s->mv_bits += get_bits_diff(s); | |
819 | } | |
820 | } else { | |
821 | put_bits(&s->pb, 3, 1); /* motion only */ | |
822 | if (!s->frame_pred_frame_dct) | |
823 | put_bits(&s->pb, 2, 2); /* motion_type: frame */ | |
824 | s->misc_bits += get_bits_diff(s); | |
825 | // RAL: f_code parameter added | |
826 | mpeg1_encode_motion(s, | |
827 | motion_x - s->last_mv[0][0][0], | |
828 | s->f_code); | |
829 | // RAL: f_code parameter added | |
830 | mpeg1_encode_motion(s, | |
831 | motion_y - s->last_mv[0][0][1], | |
832 | s->f_code); | |
833 | s->qscale -= s->dquant; | |
834 | s->mv_bits += get_bits_diff(s); | |
835 | } | |
836 | s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x; | |
837 | s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y; | |
838 | } else { | |
839 | av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD); | |
840 | ||
841 | if (cbp) { | |
842 | if (s->dquant) { | |
843 | put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */ | |
844 | put_qscale(s); | |
845 | } else { | |
846 | put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */ | |
847 | } | |
848 | } else { | |
849 | put_bits(&s->pb, 3, 1); /* motion only */ | |
850 | put_bits(&s->pb, 2, 1); /* motion_type: field */ | |
851 | s->qscale -= s->dquant; | |
852 | } | |
853 | s->misc_bits += get_bits_diff(s); | |
854 | for (i = 0; i < 2; i++) { | |
855 | put_bits(&s->pb, 1, s->field_select[0][i]); | |
856 | mpeg1_encode_motion(s, | |
857 | s->mv[0][i][0] - s->last_mv[0][i][0], | |
858 | s->f_code); | |
859 | mpeg1_encode_motion(s, | |
860 | s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1), | |
861 | s->f_code); | |
862 | s->last_mv[0][i][0] = s->mv[0][i][0]; | |
863 | s->last_mv[0][i][1] = 2 * s->mv[0][i][1]; | |
864 | } | |
865 | s->mv_bits += get_bits_diff(s); | |
866 | } | |
867 | if (cbp) { | |
868 | if (s->chroma_y_shift) { | |
869 | put_bits(&s->pb, | |
870 | ff_mpeg12_mbPatTable[cbp][1], | |
871 | ff_mpeg12_mbPatTable[cbp][0]); | |
872 | } else { | |
873 | put_bits(&s->pb, | |
874 | ff_mpeg12_mbPatTable[cbp >> 2][1], | |
875 | ff_mpeg12_mbPatTable[cbp >> 2][0]); | |
876 | put_sbits(&s->pb, 2, cbp); | |
877 | } | |
878 | } | |
879 | s->f_count++; | |
880 | } else { | |
881 | if (s->mv_type == MV_TYPE_16X16) { | |
882 | if (cbp) { // With coded bloc pattern | |
883 | if (s->dquant) { | |
884 | if (s->mv_dir == MV_DIR_FORWARD) | |
885 | put_mb_modes(s, 6, 3, 1, 0); | |
886 | else | |
887 | put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0); | |
888 | put_qscale(s); | |
889 | } else { | |
890 | put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0); | |
891 | } | |
892 | } else { // No coded bloc pattern | |
893 | put_bits(&s->pb, 5 - s->mv_dir, 2); | |
894 | if (!s->frame_pred_frame_dct) | |
895 | put_bits(&s->pb, 2, 2); /* motion_type: frame */ | |
896 | s->qscale -= s->dquant; | |
897 | } | |
898 | s->misc_bits += get_bits_diff(s); | |
899 | if (s->mv_dir & MV_DIR_FORWARD) { | |
900 | mpeg1_encode_motion(s, | |
901 | s->mv[0][0][0] - s->last_mv[0][0][0], | |
902 | s->f_code); | |
903 | mpeg1_encode_motion(s, | |
904 | s->mv[0][0][1] - s->last_mv[0][0][1], | |
905 | s->f_code); | |
906 | s->last_mv[0][0][0] = | |
907 | s->last_mv[0][1][0] = s->mv[0][0][0]; | |
908 | s->last_mv[0][0][1] = | |
909 | s->last_mv[0][1][1] = s->mv[0][0][1]; | |
910 | s->f_count++; | |
911 | } | |
912 | if (s->mv_dir & MV_DIR_BACKWARD) { | |
913 | mpeg1_encode_motion(s, | |
914 | s->mv[1][0][0] - s->last_mv[1][0][0], | |
915 | s->b_code); | |
916 | mpeg1_encode_motion(s, | |
917 | s->mv[1][0][1] - s->last_mv[1][0][1], | |
918 | s->b_code); | |
919 | s->last_mv[1][0][0] = | |
920 | s->last_mv[1][1][0] = s->mv[1][0][0]; | |
921 | s->last_mv[1][0][1] = | |
922 | s->last_mv[1][1][1] = s->mv[1][0][1]; | |
923 | s->b_count++; | |
924 | } | |
925 | } else { | |
926 | av_assert2(s->mv_type == MV_TYPE_FIELD); | |
927 | av_assert2(!s->frame_pred_frame_dct); | |
928 | if (cbp) { // With coded bloc pattern | |
929 | if (s->dquant) { | |
930 | if (s->mv_dir == MV_DIR_FORWARD) | |
931 | put_mb_modes(s, 6, 3, 1, 1); | |
932 | else | |
933 | put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1); | |
934 | put_qscale(s); | |
935 | } else { | |
936 | put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1); | |
937 | } | |
938 | } else { // No coded bloc pattern | |
939 | put_bits(&s->pb, 5 - s->mv_dir, 2); | |
940 | put_bits(&s->pb, 2, 1); /* motion_type: field */ | |
941 | s->qscale -= s->dquant; | |
942 | } | |
943 | s->misc_bits += get_bits_diff(s); | |
944 | if (s->mv_dir & MV_DIR_FORWARD) { | |
945 | for (i = 0; i < 2; i++) { | |
946 | put_bits(&s->pb, 1, s->field_select[0][i]); | |
947 | mpeg1_encode_motion(s, | |
948 | s->mv[0][i][0] - s->last_mv[0][i][0], | |
949 | s->f_code); | |
950 | mpeg1_encode_motion(s, | |
951 | s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1), | |
952 | s->f_code); | |
953 | s->last_mv[0][i][0] = s->mv[0][i][0]; | |
954 | s->last_mv[0][i][1] = s->mv[0][i][1] * 2; | |
955 | } | |
956 | s->f_count++; | |
957 | } | |
958 | if (s->mv_dir & MV_DIR_BACKWARD) { | |
959 | for (i = 0; i < 2; i++) { | |
960 | put_bits(&s->pb, 1, s->field_select[1][i]); | |
961 | mpeg1_encode_motion(s, | |
962 | s->mv[1][i][0] - s->last_mv[1][i][0], | |
963 | s->b_code); | |
964 | mpeg1_encode_motion(s, | |
965 | s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1), | |
966 | s->b_code); | |
967 | s->last_mv[1][i][0] = s->mv[1][i][0]; | |
968 | s->last_mv[1][i][1] = s->mv[1][i][1] * 2; | |
969 | } | |
970 | s->b_count++; | |
971 | } | |
972 | } | |
973 | s->mv_bits += get_bits_diff(s); | |
974 | if (cbp) { | |
975 | if (s->chroma_y_shift) { | |
976 | put_bits(&s->pb, | |
977 | ff_mpeg12_mbPatTable[cbp][1], | |
978 | ff_mpeg12_mbPatTable[cbp][0]); | |
979 | } else { | |
980 | put_bits(&s->pb, | |
981 | ff_mpeg12_mbPatTable[cbp >> 2][1], | |
982 | ff_mpeg12_mbPatTable[cbp >> 2][0]); | |
983 | put_sbits(&s->pb, 2, cbp); | |
984 | } | |
985 | } | |
986 | } | |
987 | for (i = 0; i < mb_block_count; i++) | |
988 | if (cbp & (1 << (mb_block_count - 1 - i))) | |
989 | mpeg1_encode_block(s, block[i], i); | |
990 | s->mb_skip_run = 0; | |
991 | if (s->mb_intra) | |
992 | s->i_tex_bits += get_bits_diff(s); | |
993 | else | |
994 | s->p_tex_bits += get_bits_diff(s); | |
995 | } | |
996 | } | |
997 | ||
998 | void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64], | |
999 | int motion_x, int motion_y) | |
1000 | { | |
1001 | if (s->chroma_format == CHROMA_420) | |
1002 | mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6); | |
1003 | else | |
1004 | mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8); | |
1005 | } | |
1006 | ||
1007 | av_cold void ff_mpeg1_encode_init(MpegEncContext *s) | |
1008 | { | |
1009 | static int done = 0; | |
1010 | ||
1011 | ff_mpeg12_common_init(s); | |
1012 | ||
1013 | if (!done) { | |
1014 | int f_code; | |
1015 | int mv; | |
1016 | int i; | |
1017 | ||
1018 | done = 1; | |
1019 | ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]); | |
1020 | ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]); | |
1021 | ||
1022 | for (i = 0; i < 64; i++) { | |
1023 | mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i]; | |
1024 | mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i]; | |
1025 | } | |
1026 | ||
1027 | init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len); | |
1028 | if (s->intra_vlc_format) | |
1029 | init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len); | |
1030 | ||
1031 | /* build unified dc encoding tables */ | |
1032 | for (i = -255; i < 256; i++) { | |
1033 | int adiff, index; | |
1034 | int bits, code; | |
1035 | int diff = i; | |
1036 | ||
1037 | adiff = FFABS(diff); | |
1038 | if (diff < 0) | |
1039 | diff--; | |
1040 | index = av_log2(2 * adiff); | |
1041 | ||
1042 | bits = ff_mpeg12_vlc_dc_lum_bits[index] + index; | |
1043 | code = (ff_mpeg12_vlc_dc_lum_code[index] << index) + | |
1044 | (diff & ((1 << index) - 1)); | |
1045 | mpeg1_lum_dc_uni[i + 255] = bits + (code << 8); | |
1046 | ||
1047 | bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index; | |
1048 | code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) + | |
1049 | (diff & ((1 << index) - 1)); | |
1050 | mpeg1_chr_dc_uni[i + 255] = bits + (code << 8); | |
1051 | } | |
1052 | ||
1053 | for (f_code = 1; f_code <= MAX_FCODE; f_code++) | |
1054 | for (mv = -MAX_MV; mv <= MAX_MV; mv++) { | |
1055 | int len; | |
1056 | ||
1057 | if (mv == 0) { | |
1058 | len = ff_mpeg12_mbMotionVectorTable[0][1]; | |
1059 | } else { | |
1060 | int val, bit_size, code; | |
1061 | ||
1062 | bit_size = f_code - 1; | |
1063 | ||
1064 | val = mv; | |
1065 | if (val < 0) | |
1066 | val = -val; | |
1067 | val--; | |
1068 | code = (val >> bit_size) + 1; | |
1069 | if (code < 17) | |
1070 | len = ff_mpeg12_mbMotionVectorTable[code][1] + | |
1071 | 1 + bit_size; | |
1072 | else | |
1073 | len = ff_mpeg12_mbMotionVectorTable[16][1] + | |
1074 | 2 + bit_size; | |
1075 | } | |
1076 | ||
1077 | mv_penalty[f_code][mv + MAX_MV] = len; | |
1078 | } | |
1079 | ||
1080 | ||
1081 | for (f_code = MAX_FCODE; f_code > 0; f_code--) | |
1082 | for (mv = -(8 << f_code); mv < (8 << f_code); mv++) | |
1083 | fcode_tab[mv + MAX_MV] = f_code; | |
1084 | } | |
1085 | s->me.mv_penalty = mv_penalty; | |
1086 | s->fcode_tab = fcode_tab; | |
1087 | if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) { | |
1088 | s->min_qcoeff = -255; | |
1089 | s->max_qcoeff = 255; | |
1090 | } else { | |
1091 | s->min_qcoeff = -2047; | |
1092 | s->max_qcoeff = 2047; | |
1093 | } | |
1094 | if (s->intra_vlc_format) { | |
1095 | s->intra_ac_vlc_length = | |
1096 | s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len; | |
1097 | } else { | |
1098 | s->intra_ac_vlc_length = | |
1099 | s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len; | |
1100 | } | |
1101 | s->inter_ac_vlc_length = | |
1102 | s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len; | |
1103 | } | |
1104 | ||
1105 | #define OFFSET(x) offsetof(MpegEncContext, x) | |
1106 | #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM | |
1107 | #define COMMON_OPTS \ | |
1108 | { "gop_timecode", "MPEG GOP Timecode in hh:mm:ss[:;.]ff format", \ | |
1109 | OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\ | |
1110 | { "intra_vlc", "Use MPEG-2 intra VLC table.", \ | |
1111 | OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \ | |
1112 | { "drop_frame_timecode", "Timecode is in drop frame format.", \ | |
1113 | OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \ | |
1114 | { "scan_offset", "Reserve space for SVCD scan offset user data.", \ | |
1115 | OFFSET(scan_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
1116 | ||
1117 | static const AVOption mpeg1_options[] = { | |
1118 | COMMON_OPTS | |
1119 | FF_MPV_COMMON_OPTS | |
1120 | { NULL }, | |
1121 | }; | |
1122 | ||
1123 | static const AVOption mpeg2_options[] = { | |
1124 | COMMON_OPTS | |
1125 | { "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
1126 | { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
1127 | { "seq_disp_ext", "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" }, | |
1128 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, VE, "seq_disp_ext" }, | |
1129 | { "never", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, VE, "seq_disp_ext" }, | |
1130 | { "always", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, VE, "seq_disp_ext" }, | |
1131 | FF_MPV_COMMON_OPTS | |
1132 | { NULL }, | |
1133 | }; | |
1134 | ||
1135 | #define mpeg12_class(x) \ | |
1136 | static const AVClass mpeg ## x ## _class = { \ | |
1137 | .class_name = "mpeg" # x "video encoder", \ | |
1138 | .item_name = av_default_item_name, \ | |
1139 | .option = mpeg ## x ## _options, \ | |
1140 | .version = LIBAVUTIL_VERSION_INT, \ | |
1141 | }; | |
1142 | ||
1143 | mpeg12_class(1) | |
1144 | mpeg12_class(2) | |
1145 | ||
1146 | AVCodec ff_mpeg1video_encoder = { | |
1147 | .name = "mpeg1video", | |
1148 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), | |
1149 | .type = AVMEDIA_TYPE_VIDEO, | |
1150 | .id = AV_CODEC_ID_MPEG1VIDEO, | |
1151 | .priv_data_size = sizeof(MpegEncContext), | |
1152 | .init = encode_init, | |
1153 | .encode2 = ff_mpv_encode_picture, | |
1154 | .close = ff_mpv_encode_end, | |
1155 | .supported_framerates = ff_mpeg12_frame_rate_tab + 1, | |
1156 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, | |
1157 | AV_PIX_FMT_NONE }, | |
1158 | .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, | |
1159 | .priv_class = &mpeg1_class, | |
1160 | }; | |
1161 | ||
1162 | AVCodec ff_mpeg2video_encoder = { | |
1163 | .name = "mpeg2video", | |
1164 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"), | |
1165 | .type = AVMEDIA_TYPE_VIDEO, | |
1166 | .id = AV_CODEC_ID_MPEG2VIDEO, | |
1167 | .priv_data_size = sizeof(MpegEncContext), | |
1168 | .init = encode_init, | |
1169 | .encode2 = ff_mpv_encode_picture, | |
1170 | .close = ff_mpv_encode_end, | |
1171 | .supported_framerates = ff_mpeg2_frame_rate_tab, | |
1172 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, | |
1173 | AV_PIX_FMT_YUV422P, | |
1174 | AV_PIX_FMT_NONE }, | |
1175 | .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, | |
1176 | .priv_class = &mpeg2_class, | |
1177 | }; |