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1 | /* |
2 | * H.26L/H.264/AVC/JVT/14496-10/... decoder | |
3 | * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * H.264 / AVC / MPEG4 part10 codec. | |
25 | * @author Michael Niedermayer <michaelni@gmx.at> | |
26 | */ | |
27 | ||
28 | #define UNCHECKED_BITSTREAM_READER 1 | |
29 | ||
30 | #include "libavutil/avassert.h" | |
31 | #include "libavutil/display.h" | |
32 | #include "libavutil/imgutils.h" | |
33 | #include "libavutil/opt.h" | |
34 | #include "libavutil/stereo3d.h" | |
35 | #include "libavutil/timer.h" | |
36 | #include "internal.h" | |
37 | #include "cabac.h" | |
38 | #include "cabac_functions.h" | |
39 | #include "error_resilience.h" | |
40 | #include "avcodec.h" | |
41 | #include "h264.h" | |
42 | #include "h264data.h" | |
43 | #include "h264chroma.h" | |
44 | #include "h264_mvpred.h" | |
45 | #include "golomb.h" | |
46 | #include "mathops.h" | |
47 | #include "me_cmp.h" | |
48 | #include "mpegutils.h" | |
49 | #include "rectangle.h" | |
50 | #include "svq3.h" | |
51 | #include "thread.h" | |
52 | #include "vdpau_internal.h" | |
53 | ||
54 | #include <assert.h> | |
55 | ||
56 | const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 }; | |
57 | ||
58 | int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx) | |
59 | { | |
60 | H264Context *h = avctx->priv_data; | |
61 | return h ? h->sps.num_reorder_frames : 0; | |
62 | } | |
63 | ||
64 | static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, | |
65 | int (*mv)[2][4][2], | |
66 | int mb_x, int mb_y, int mb_intra, int mb_skipped) | |
67 | { | |
68 | H264Context *h = opaque; | |
69 | ||
70 | h->mb_x = mb_x; | |
71 | h->mb_y = mb_y; | |
72 | h->mb_xy = mb_x + mb_y * h->mb_stride; | |
73 | memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache)); | |
74 | av_assert1(ref >= 0); | |
75 | /* FIXME: It is possible albeit uncommon that slice references | |
76 | * differ between slices. We take the easy approach and ignore | |
77 | * it for now. If this turns out to have any relevance in | |
78 | * practice then correct remapping should be added. */ | |
79 | if (ref >= h->ref_count[0]) | |
80 | ref = 0; | |
81 | if (!h->ref_list[0][ref].f.data[0]) { | |
82 | av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n"); | |
83 | ref = 0; | |
84 | } | |
85 | if ((h->ref_list[0][ref].reference&3) != 3) { | |
86 | av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n"); | |
87 | return; | |
88 | } | |
89 | fill_rectangle(&h->cur_pic.ref_index[0][4 * h->mb_xy], | |
90 | 2, 2, 2, ref, 1); | |
91 | fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); | |
92 | fill_rectangle(h->mv_cache[0][scan8[0]], 4, 4, 8, | |
93 | pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4); | |
94 | h->mb_mbaff = | |
95 | h->mb_field_decoding_flag = 0; | |
96 | ff_h264_hl_decode_mb(h); | |
97 | } | |
98 | ||
99 | void ff_h264_draw_horiz_band(H264Context *h, int y, int height) | |
100 | { | |
101 | AVCodecContext *avctx = h->avctx; | |
102 | AVFrame *cur = &h->cur_pic.f; | |
103 | AVFrame *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0].f : NULL; | |
104 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); | |
105 | int vshift = desc->log2_chroma_h; | |
106 | const int field_pic = h->picture_structure != PICT_FRAME; | |
107 | if (field_pic) { | |
108 | height <<= 1; | |
109 | y <<= 1; | |
110 | } | |
111 | ||
112 | height = FFMIN(height, avctx->height - y); | |
113 | ||
114 | if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) | |
115 | return; | |
116 | ||
117 | if (avctx->draw_horiz_band) { | |
118 | AVFrame *src; | |
119 | int offset[AV_NUM_DATA_POINTERS]; | |
120 | int i; | |
121 | ||
122 | if (cur->pict_type == AV_PICTURE_TYPE_B || h->low_delay || | |
123 | (avctx->slice_flags & SLICE_FLAG_CODED_ORDER)) | |
124 | src = cur; | |
125 | else if (last) | |
126 | src = last; | |
127 | else | |
128 | return; | |
129 | ||
130 | offset[0] = y * src->linesize[0]; | |
131 | offset[1] = | |
132 | offset[2] = (y >> vshift) * src->linesize[1]; | |
133 | for (i = 3; i < AV_NUM_DATA_POINTERS; i++) | |
134 | offset[i] = 0; | |
135 | ||
136 | emms_c(); | |
137 | ||
138 | avctx->draw_horiz_band(avctx, src, offset, | |
139 | y, h->picture_structure, height); | |
140 | } | |
141 | } | |
142 | ||
143 | /** | |
144 | * Check if the top & left blocks are available if needed and | |
145 | * change the dc mode so it only uses the available blocks. | |
146 | */ | |
147 | int ff_h264_check_intra4x4_pred_mode(H264Context *h) | |
148 | { | |
149 | static const int8_t top[12] = { | |
150 | -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0 | |
151 | }; | |
152 | static const int8_t left[12] = { | |
153 | 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED | |
154 | }; | |
155 | int i; | |
156 | ||
157 | if (!(h->top_samples_available & 0x8000)) { | |
158 | for (i = 0; i < 4; i++) { | |
159 | int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]]; | |
160 | if (status < 0) { | |
161 | av_log(h->avctx, AV_LOG_ERROR, | |
162 | "top block unavailable for requested intra4x4 mode %d at %d %d\n", | |
163 | status, h->mb_x, h->mb_y); | |
164 | return AVERROR_INVALIDDATA; | |
165 | } else if (status) { | |
166 | h->intra4x4_pred_mode_cache[scan8[0] + i] = status; | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | if ((h->left_samples_available & 0x8888) != 0x8888) { | |
172 | static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 }; | |
173 | for (i = 0; i < 4; i++) | |
174 | if (!(h->left_samples_available & mask[i])) { | |
175 | int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]]; | |
176 | if (status < 0) { | |
177 | av_log(h->avctx, AV_LOG_ERROR, | |
178 | "left block unavailable for requested intra4x4 mode %d at %d %d\n", | |
179 | status, h->mb_x, h->mb_y); | |
180 | return AVERROR_INVALIDDATA; | |
181 | } else if (status) { | |
182 | h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status; | |
183 | } | |
184 | } | |
185 | } | |
186 | ||
187 | return 0; | |
188 | } // FIXME cleanup like ff_h264_check_intra_pred_mode | |
189 | ||
190 | /** | |
191 | * Check if the top & left blocks are available if needed and | |
192 | * change the dc mode so it only uses the available blocks. | |
193 | */ | |
194 | int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma) | |
195 | { | |
196 | static const int8_t top[4] = { LEFT_DC_PRED8x8, 1, -1, -1 }; | |
197 | static const int8_t left[5] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 }; | |
198 | ||
199 | if (mode > 3U) { | |
200 | av_log(h->avctx, AV_LOG_ERROR, | |
201 | "out of range intra chroma pred mode at %d %d\n", | |
202 | h->mb_x, h->mb_y); | |
203 | return AVERROR_INVALIDDATA; | |
204 | } | |
205 | ||
206 | if (!(h->top_samples_available & 0x8000)) { | |
207 | mode = top[mode]; | |
208 | if (mode < 0) { | |
209 | av_log(h->avctx, AV_LOG_ERROR, | |
210 | "top block unavailable for requested intra mode at %d %d\n", | |
211 | h->mb_x, h->mb_y); | |
212 | return AVERROR_INVALIDDATA; | |
213 | } | |
214 | } | |
215 | ||
216 | if ((h->left_samples_available & 0x8080) != 0x8080) { | |
217 | mode = left[mode]; | |
218 | if (mode < 0) { | |
219 | av_log(h->avctx, AV_LOG_ERROR, | |
220 | "left block unavailable for requested intra mode at %d %d\n", | |
221 | h->mb_x, h->mb_y); | |
222 | return AVERROR_INVALIDDATA; | |
223 | } | |
224 | if (is_chroma && (h->left_samples_available & 0x8080)) { | |
225 | // mad cow disease mode, aka MBAFF + constrained_intra_pred | |
226 | mode = ALZHEIMER_DC_L0T_PRED8x8 + | |
227 | (!(h->left_samples_available & 0x8000)) + | |
228 | 2 * (mode == DC_128_PRED8x8); | |
229 | } | |
230 | } | |
231 | ||
232 | return mode; | |
233 | } | |
234 | ||
235 | const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, | |
236 | int *dst_length, int *consumed, int length) | |
237 | { | |
238 | int i, si, di; | |
239 | uint8_t *dst; | |
240 | int bufidx; | |
241 | ||
242 | // src[0]&0x80; // forbidden bit | |
243 | h->nal_ref_idc = src[0] >> 5; | |
244 | h->nal_unit_type = src[0] & 0x1F; | |
245 | ||
246 | src++; | |
247 | length--; | |
248 | ||
249 | #define STARTCODE_TEST \ | |
250 | if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \ | |
251 | if (src[i + 2] != 3 && src[i + 2] != 0) { \ | |
252 | /* startcode, so we must be past the end */ \ | |
253 | length = i; \ | |
254 | } \ | |
255 | break; \ | |
256 | } | |
257 | ||
258 | #if HAVE_FAST_UNALIGNED | |
259 | #define FIND_FIRST_ZERO \ | |
260 | if (i > 0 && !src[i]) \ | |
261 | i--; \ | |
262 | while (src[i]) \ | |
263 | i++ | |
264 | ||
265 | #if HAVE_FAST_64BIT | |
266 | for (i = 0; i + 1 < length; i += 9) { | |
267 | if (!((~AV_RN64A(src + i) & | |
268 | (AV_RN64A(src + i) - 0x0100010001000101ULL)) & | |
269 | 0x8000800080008080ULL)) | |
270 | continue; | |
271 | FIND_FIRST_ZERO; | |
272 | STARTCODE_TEST; | |
273 | i -= 7; | |
274 | } | |
275 | #else | |
276 | for (i = 0; i + 1 < length; i += 5) { | |
277 | if (!((~AV_RN32A(src + i) & | |
278 | (AV_RN32A(src + i) - 0x01000101U)) & | |
279 | 0x80008080U)) | |
280 | continue; | |
281 | FIND_FIRST_ZERO; | |
282 | STARTCODE_TEST; | |
283 | i -= 3; | |
284 | } | |
285 | #endif | |
286 | #else | |
287 | for (i = 0; i + 1 < length; i += 2) { | |
288 | if (src[i]) | |
289 | continue; | |
290 | if (i > 0 && src[i - 1] == 0) | |
291 | i--; | |
292 | STARTCODE_TEST; | |
293 | } | |
294 | #endif | |
295 | ||
296 | // use second escape buffer for inter data | |
297 | bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; | |
298 | ||
299 | av_fast_padded_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+MAX_MBPAIR_SIZE); | |
300 | dst = h->rbsp_buffer[bufidx]; | |
301 | ||
302 | if (!dst) | |
303 | return NULL; | |
304 | ||
305 | if(i>=length-1){ //no escaped 0 | |
306 | *dst_length= length; | |
307 | *consumed= length+1; //+1 for the header | |
308 | if(h->avctx->flags2 & CODEC_FLAG2_FAST){ | |
309 | return src; | |
310 | }else{ | |
311 | memcpy(dst, src, length); | |
312 | return dst; | |
313 | } | |
314 | } | |
315 | ||
316 | memcpy(dst, src, i); | |
317 | si = di = i; | |
318 | while (si + 2 < length) { | |
319 | // remove escapes (very rare 1:2^22) | |
320 | if (src[si + 2] > 3) { | |
321 | dst[di++] = src[si++]; | |
322 | dst[di++] = src[si++]; | |
323 | } else if (src[si] == 0 && src[si + 1] == 0 && src[si + 2] != 0) { | |
324 | if (src[si + 2] == 3) { // escape | |
325 | dst[di++] = 0; | |
326 | dst[di++] = 0; | |
327 | si += 3; | |
328 | continue; | |
329 | } else // next start code | |
330 | goto nsc; | |
331 | } | |
332 | ||
333 | dst[di++] = src[si++]; | |
334 | } | |
335 | while (si < length) | |
336 | dst[di++] = src[si++]; | |
337 | ||
338 | nsc: | |
339 | memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE); | |
340 | ||
341 | *dst_length = di; | |
342 | *consumed = si + 1; // +1 for the header | |
343 | /* FIXME store exact number of bits in the getbitcontext | |
344 | * (it is needed for decoding) */ | |
345 | return dst; | |
346 | } | |
347 | ||
348 | /** | |
349 | * Identify the exact end of the bitstream | |
350 | * @return the length of the trailing, or 0 if damaged | |
351 | */ | |
352 | static int decode_rbsp_trailing(H264Context *h, const uint8_t *src) | |
353 | { | |
354 | int v = *src; | |
355 | int r; | |
356 | ||
357 | tprintf(h->avctx, "rbsp trailing %X\n", v); | |
358 | ||
359 | for (r = 1; r < 9; r++) { | |
360 | if (v & 1) | |
361 | return r; | |
362 | v >>= 1; | |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
367 | void ff_h264_free_tables(H264Context *h, int free_rbsp) | |
368 | { | |
369 | int i; | |
370 | H264Context *hx; | |
371 | ||
372 | av_freep(&h->intra4x4_pred_mode); | |
373 | av_freep(&h->chroma_pred_mode_table); | |
374 | av_freep(&h->cbp_table); | |
375 | av_freep(&h->mvd_table[0]); | |
376 | av_freep(&h->mvd_table[1]); | |
377 | av_freep(&h->direct_table); | |
378 | av_freep(&h->non_zero_count); | |
379 | av_freep(&h->slice_table_base); | |
380 | h->slice_table = NULL; | |
381 | av_freep(&h->list_counts); | |
382 | ||
383 | av_freep(&h->mb2b_xy); | |
384 | av_freep(&h->mb2br_xy); | |
385 | ||
386 | av_buffer_pool_uninit(&h->qscale_table_pool); | |
387 | av_buffer_pool_uninit(&h->mb_type_pool); | |
388 | av_buffer_pool_uninit(&h->motion_val_pool); | |
389 | av_buffer_pool_uninit(&h->ref_index_pool); | |
390 | ||
391 | if (free_rbsp && h->DPB) { | |
392 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) | |
393 | ff_h264_unref_picture(h, &h->DPB[i]); | |
394 | av_freep(&h->DPB); | |
395 | } else if (h->DPB) { | |
396 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) | |
397 | h->DPB[i].needs_realloc = 1; | |
398 | } | |
399 | ||
400 | h->cur_pic_ptr = NULL; | |
401 | ||
402 | for (i = 0; i < H264_MAX_THREADS; i++) { | |
403 | hx = h->thread_context[i]; | |
404 | if (!hx) | |
405 | continue; | |
406 | av_freep(&hx->top_borders[1]); | |
407 | av_freep(&hx->top_borders[0]); | |
408 | av_freep(&hx->bipred_scratchpad); | |
409 | av_freep(&hx->edge_emu_buffer); | |
410 | av_freep(&hx->dc_val_base); | |
411 | av_freep(&hx->er.mb_index2xy); | |
412 | av_freep(&hx->er.error_status_table); | |
413 | av_freep(&hx->er.er_temp_buffer); | |
414 | av_freep(&hx->er.mbintra_table); | |
415 | av_freep(&hx->er.mbskip_table); | |
416 | ||
417 | if (free_rbsp) { | |
418 | av_freep(&hx->rbsp_buffer[1]); | |
419 | av_freep(&hx->rbsp_buffer[0]); | |
420 | hx->rbsp_buffer_size[0] = 0; | |
421 | hx->rbsp_buffer_size[1] = 0; | |
422 | } | |
423 | if (i) | |
424 | av_freep(&h->thread_context[i]); | |
425 | } | |
426 | } | |
427 | ||
428 | int ff_h264_alloc_tables(H264Context *h) | |
429 | { | |
430 | const int big_mb_num = h->mb_stride * (h->mb_height + 1); | |
431 | const int row_mb_num = 2*h->mb_stride*FFMAX(h->avctx->thread_count, 1); | |
432 | int x, y, i; | |
433 | ||
434 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode, | |
435 | row_mb_num, 8 * sizeof(uint8_t), fail) | |
436 | FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count, | |
437 | big_mb_num * 48 * sizeof(uint8_t), fail) | |
438 | FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base, | |
439 | (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail) | |
440 | FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table, | |
441 | big_mb_num * sizeof(uint16_t), fail) | |
442 | FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table, | |
443 | big_mb_num * sizeof(uint8_t), fail) | |
444 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0], | |
445 | row_mb_num, 16 * sizeof(uint8_t), fail); | |
446 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1], | |
447 | row_mb_num, 16 * sizeof(uint8_t), fail); | |
448 | FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table, | |
449 | 4 * big_mb_num * sizeof(uint8_t), fail); | |
450 | FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts, | |
451 | big_mb_num * sizeof(uint8_t), fail) | |
452 | ||
453 | memset(h->slice_table_base, -1, | |
454 | (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base)); | |
455 | h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1; | |
456 | ||
457 | FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy, | |
458 | big_mb_num * sizeof(uint32_t), fail); | |
459 | FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy, | |
460 | big_mb_num * sizeof(uint32_t), fail); | |
461 | for (y = 0; y < h->mb_height; y++) | |
462 | for (x = 0; x < h->mb_width; x++) { | |
463 | const int mb_xy = x + y * h->mb_stride; | |
464 | const int b_xy = 4 * x + 4 * y * h->b_stride; | |
465 | ||
466 | h->mb2b_xy[mb_xy] = b_xy; | |
467 | h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride))); | |
468 | } | |
469 | ||
470 | if (!h->dequant4_coeff[0]) | |
471 | h264_init_dequant_tables(h); | |
472 | ||
473 | if (!h->DPB) { | |
474 | h->DPB = av_mallocz_array(H264_MAX_PICTURE_COUNT, sizeof(*h->DPB)); | |
475 | if (!h->DPB) | |
476 | goto fail; | |
477 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) | |
478 | av_frame_unref(&h->DPB[i].f); | |
479 | av_frame_unref(&h->cur_pic.f); | |
480 | } | |
481 | ||
482 | return 0; | |
483 | ||
484 | fail: | |
485 | ff_h264_free_tables(h, 1); | |
486 | return AVERROR(ENOMEM); | |
487 | } | |
488 | ||
489 | /** | |
490 | * Init context | |
491 | * Allocate buffers which are not shared amongst multiple threads. | |
492 | */ | |
493 | int ff_h264_context_init(H264Context *h) | |
494 | { | |
495 | ERContext *er = &h->er; | |
496 | int mb_array_size = h->mb_height * h->mb_stride; | |
497 | int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1); | |
498 | int c_size = h->mb_stride * (h->mb_height + 1); | |
499 | int yc_size = y_size + 2 * c_size; | |
500 | int x, y, i; | |
501 | ||
502 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->top_borders[0], | |
503 | h->mb_width, 16 * 3 * sizeof(uint8_t) * 2, fail) | |
504 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->top_borders[1], | |
505 | h->mb_width, 16 * 3 * sizeof(uint8_t) * 2, fail) | |
506 | ||
507 | h->ref_cache[0][scan8[5] + 1] = | |
508 | h->ref_cache[0][scan8[7] + 1] = | |
509 | h->ref_cache[0][scan8[13] + 1] = | |
510 | h->ref_cache[1][scan8[5] + 1] = | |
511 | h->ref_cache[1][scan8[7] + 1] = | |
512 | h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE; | |
513 | ||
514 | if (CONFIG_ERROR_RESILIENCE) { | |
515 | /* init ER */ | |
516 | er->avctx = h->avctx; | |
517 | er->mecc = &h->mecc; | |
518 | er->decode_mb = h264_er_decode_mb; | |
519 | er->opaque = h; | |
520 | er->quarter_sample = 1; | |
521 | ||
522 | er->mb_num = h->mb_num; | |
523 | er->mb_width = h->mb_width; | |
524 | er->mb_height = h->mb_height; | |
525 | er->mb_stride = h->mb_stride; | |
526 | er->b8_stride = h->mb_width * 2 + 1; | |
527 | ||
528 | // error resilience code looks cleaner with this | |
529 | FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy, | |
530 | (h->mb_num + 1) * sizeof(int), fail); | |
531 | ||
532 | for (y = 0; y < h->mb_height; y++) | |
533 | for (x = 0; x < h->mb_width; x++) | |
534 | er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride; | |
535 | ||
536 | er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) * | |
537 | h->mb_stride + h->mb_width; | |
538 | ||
539 | FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table, | |
540 | mb_array_size * sizeof(uint8_t), fail); | |
541 | ||
542 | FF_ALLOC_OR_GOTO(h->avctx, er->mbintra_table, mb_array_size, fail); | |
543 | memset(er->mbintra_table, 1, mb_array_size); | |
544 | ||
545 | FF_ALLOCZ_OR_GOTO(h->avctx, er->mbskip_table, mb_array_size + 2, fail); | |
546 | ||
547 | FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer, | |
548 | h->mb_height * h->mb_stride, fail); | |
549 | ||
550 | FF_ALLOCZ_OR_GOTO(h->avctx, h->dc_val_base, | |
551 | yc_size * sizeof(int16_t), fail); | |
552 | er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2; | |
553 | er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1; | |
554 | er->dc_val[2] = er->dc_val[1] + c_size; | |
555 | for (i = 0; i < yc_size; i++) | |
556 | h->dc_val_base[i] = 1024; | |
557 | } | |
558 | ||
559 | return 0; | |
560 | ||
561 | fail: | |
562 | return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us | |
563 | } | |
564 | ||
565 | static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, | |
566 | int parse_extradata); | |
567 | ||
568 | int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size) | |
569 | { | |
570 | AVCodecContext *avctx = h->avctx; | |
571 | int ret; | |
572 | ||
573 | if (!buf || size <= 0) | |
574 | return -1; | |
575 | ||
576 | if (buf[0] == 1) { | |
577 | int i, cnt, nalsize; | |
578 | const unsigned char *p = buf; | |
579 | ||
580 | h->is_avc = 1; | |
581 | ||
582 | if (size < 7) { | |
583 | av_log(avctx, AV_LOG_ERROR, | |
584 | "avcC %d too short\n", size); | |
585 | return AVERROR_INVALIDDATA; | |
586 | } | |
587 | /* sps and pps in the avcC always have length coded with 2 bytes, | |
588 | * so put a fake nal_length_size = 2 while parsing them */ | |
589 | h->nal_length_size = 2; | |
590 | // Decode sps from avcC | |
591 | cnt = *(p + 5) & 0x1f; // Number of sps | |
592 | p += 6; | |
593 | for (i = 0; i < cnt; i++) { | |
594 | nalsize = AV_RB16(p) + 2; | |
595 | if(nalsize > size - (p-buf)) | |
596 | return AVERROR_INVALIDDATA; | |
597 | ret = decode_nal_units(h, p, nalsize, 1); | |
598 | if (ret < 0) { | |
599 | av_log(avctx, AV_LOG_ERROR, | |
600 | "Decoding sps %d from avcC failed\n", i); | |
601 | return ret; | |
602 | } | |
603 | p += nalsize; | |
604 | } | |
605 | // Decode pps from avcC | |
606 | cnt = *(p++); // Number of pps | |
607 | for (i = 0; i < cnt; i++) { | |
608 | nalsize = AV_RB16(p) + 2; | |
609 | if(nalsize > size - (p-buf)) | |
610 | return AVERROR_INVALIDDATA; | |
611 | ret = decode_nal_units(h, p, nalsize, 1); | |
612 | if (ret < 0) { | |
613 | av_log(avctx, AV_LOG_ERROR, | |
614 | "Decoding pps %d from avcC failed\n", i); | |
615 | return ret; | |
616 | } | |
617 | p += nalsize; | |
618 | } | |
619 | // Store right nal length size that will be used to parse all other nals | |
620 | h->nal_length_size = (buf[4] & 0x03) + 1; | |
621 | } else { | |
622 | h->is_avc = 0; | |
623 | ret = decode_nal_units(h, buf, size, 1); | |
624 | if (ret < 0) | |
625 | return ret; | |
626 | } | |
627 | return size; | |
628 | } | |
629 | ||
630 | av_cold int ff_h264_decode_init(AVCodecContext *avctx) | |
631 | { | |
632 | H264Context *h = avctx->priv_data; | |
633 | int i; | |
634 | int ret; | |
635 | ||
636 | h->avctx = avctx; | |
637 | ||
638 | h->bit_depth_luma = 8; | |
639 | h->chroma_format_idc = 1; | |
640 | ||
641 | h->avctx->bits_per_raw_sample = 8; | |
642 | h->cur_chroma_format_idc = 1; | |
643 | ||
644 | ff_h264dsp_init(&h->h264dsp, 8, 1); | |
645 | av_assert0(h->sps.bit_depth_chroma == 0); | |
646 | ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); | |
647 | ff_h264qpel_init(&h->h264qpel, 8); | |
648 | ff_h264_pred_init(&h->hpc, h->avctx->codec_id, 8, 1); | |
649 | ||
650 | h->dequant_coeff_pps = -1; | |
651 | h->current_sps_id = -1; | |
652 | ||
653 | /* needed so that IDCT permutation is known early */ | |
654 | if (CONFIG_ERROR_RESILIENCE) | |
655 | ff_me_cmp_init(&h->mecc, h->avctx); | |
656 | ff_videodsp_init(&h->vdsp, 8); | |
657 | ||
658 | memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t)); | |
659 | memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t)); | |
660 | ||
661 | h->picture_structure = PICT_FRAME; | |
662 | h->slice_context_count = 1; | |
663 | h->workaround_bugs = avctx->workaround_bugs; | |
664 | h->flags = avctx->flags; | |
665 | ||
666 | /* set defaults */ | |
667 | // s->decode_mb = ff_h263_decode_mb; | |
668 | if (!avctx->has_b_frames) | |
669 | h->low_delay = 1; | |
670 | ||
671 | avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; | |
672 | ||
673 | ff_h264_decode_init_vlc(); | |
674 | ||
675 | ff_init_cabac_states(); | |
676 | ||
677 | h->pixel_shift = 0; | |
678 | h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8; | |
679 | ||
680 | h->thread_context[0] = h; | |
681 | h->outputed_poc = h->next_outputed_poc = INT_MIN; | |
682 | for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) | |
683 | h->last_pocs[i] = INT_MIN; | |
684 | h->prev_poc_msb = 1 << 16; | |
685 | h->prev_frame_num = -1; | |
686 | h->x264_build = -1; | |
687 | h->sei_fpa.frame_packing_arrangement_cancel_flag = -1; | |
688 | ff_h264_reset_sei(h); | |
689 | if (avctx->codec_id == AV_CODEC_ID_H264) { | |
690 | if (avctx->ticks_per_frame == 1) { | |
691 | if(h->avctx->time_base.den < INT_MAX/2) { | |
692 | h->avctx->time_base.den *= 2; | |
693 | } else | |
694 | h->avctx->time_base.num /= 2; | |
695 | } | |
696 | avctx->ticks_per_frame = 2; | |
697 | } | |
698 | ||
699 | if (avctx->extradata_size > 0 && avctx->extradata) { | |
700 | ret = ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size); | |
701 | if (ret < 0) { | |
702 | ff_h264_free_context(h); | |
703 | return ret; | |
704 | } | |
705 | } | |
706 | ||
707 | if (h->sps.bitstream_restriction_flag && | |
708 | h->avctx->has_b_frames < h->sps.num_reorder_frames) { | |
709 | h->avctx->has_b_frames = h->sps.num_reorder_frames; | |
710 | h->low_delay = 0; | |
711 | } | |
712 | ||
713 | avctx->internal->allocate_progress = 1; | |
714 | ||
715 | ff_h264_flush_change(h); | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
720 | static int decode_init_thread_copy(AVCodecContext *avctx) | |
721 | { | |
722 | H264Context *h = avctx->priv_data; | |
723 | ||
724 | if (!avctx->internal->is_copy) | |
725 | return 0; | |
726 | memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); | |
727 | memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); | |
728 | ||
729 | h->rbsp_buffer[0] = NULL; | |
730 | h->rbsp_buffer[1] = NULL; | |
731 | h->rbsp_buffer_size[0] = 0; | |
732 | h->rbsp_buffer_size[1] = 0; | |
733 | h->context_initialized = 0; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | /** | |
739 | * Run setup operations that must be run after slice header decoding. | |
740 | * This includes finding the next displayed frame. | |
741 | * | |
742 | * @param h h264 master context | |
743 | * @param setup_finished enough NALs have been read that we can call | |
744 | * ff_thread_finish_setup() | |
745 | */ | |
746 | static void decode_postinit(H264Context *h, int setup_finished) | |
747 | { | |
748 | H264Picture *out = h->cur_pic_ptr; | |
749 | H264Picture *cur = h->cur_pic_ptr; | |
750 | int i, pics, out_of_order, out_idx; | |
751 | ||
752 | h->cur_pic_ptr->f.pict_type = h->pict_type; | |
753 | ||
754 | if (h->next_output_pic) | |
755 | return; | |
756 | ||
757 | if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) { | |
758 | /* FIXME: if we have two PAFF fields in one packet, we can't start | |
759 | * the next thread here. If we have one field per packet, we can. | |
760 | * The check in decode_nal_units() is not good enough to find this | |
761 | * yet, so we assume the worst for now. */ | |
762 | // if (setup_finished) | |
763 | // ff_thread_finish_setup(h->avctx); | |
764 | return; | |
765 | } | |
766 | ||
767 | cur->f.interlaced_frame = 0; | |
768 | cur->f.repeat_pict = 0; | |
769 | ||
770 | /* Signal interlacing information externally. */ | |
771 | /* Prioritize picture timing SEI information over used | |
772 | * decoding process if it exists. */ | |
773 | ||
774 | if (h->sps.pic_struct_present_flag) { | |
775 | switch (h->sei_pic_struct) { | |
776 | case SEI_PIC_STRUCT_FRAME: | |
777 | break; | |
778 | case SEI_PIC_STRUCT_TOP_FIELD: | |
779 | case SEI_PIC_STRUCT_BOTTOM_FIELD: | |
780 | cur->f.interlaced_frame = 1; | |
781 | break; | |
782 | case SEI_PIC_STRUCT_TOP_BOTTOM: | |
783 | case SEI_PIC_STRUCT_BOTTOM_TOP: | |
784 | if (FIELD_OR_MBAFF_PICTURE(h)) | |
785 | cur->f.interlaced_frame = 1; | |
786 | else | |
787 | // try to flag soft telecine progressive | |
788 | cur->f.interlaced_frame = h->prev_interlaced_frame; | |
789 | break; | |
790 | case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: | |
791 | case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: | |
792 | /* Signal the possibility of telecined film externally | |
793 | * (pic_struct 5,6). From these hints, let the applications | |
794 | * decide if they apply deinterlacing. */ | |
795 | cur->f.repeat_pict = 1; | |
796 | break; | |
797 | case SEI_PIC_STRUCT_FRAME_DOUBLING: | |
798 | cur->f.repeat_pict = 2; | |
799 | break; | |
800 | case SEI_PIC_STRUCT_FRAME_TRIPLING: | |
801 | cur->f.repeat_pict = 4; | |
802 | break; | |
803 | } | |
804 | ||
805 | if ((h->sei_ct_type & 3) && | |
806 | h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) | |
807 | cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0; | |
808 | } else { | |
809 | /* Derive interlacing flag from used decoding process. */ | |
810 | cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE(h); | |
811 | } | |
812 | h->prev_interlaced_frame = cur->f.interlaced_frame; | |
813 | ||
814 | if (cur->field_poc[0] != cur->field_poc[1]) { | |
815 | /* Derive top_field_first from field pocs. */ | |
816 | cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1]; | |
817 | } else { | |
818 | if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) { | |
819 | /* Use picture timing SEI information. Even if it is a | |
820 | * information of a past frame, better than nothing. */ | |
821 | if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM || | |
822 | h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) | |
823 | cur->f.top_field_first = 1; | |
824 | else | |
825 | cur->f.top_field_first = 0; | |
826 | } else { | |
827 | /* Most likely progressive */ | |
828 | cur->f.top_field_first = 0; | |
829 | } | |
830 | } | |
831 | ||
832 | if (h->sei_frame_packing_present && | |
833 | h->frame_packing_arrangement_type >= 0 && | |
834 | h->frame_packing_arrangement_type <= 6 && | |
835 | h->content_interpretation_type > 0 && | |
836 | h->content_interpretation_type < 3) { | |
837 | AVStereo3D *stereo = av_stereo3d_create_side_data(&cur->f); | |
838 | if (stereo) { | |
839 | switch (h->frame_packing_arrangement_type) { | |
840 | case 0: | |
841 | stereo->type = AV_STEREO3D_CHECKERBOARD; | |
842 | break; | |
843 | case 1: | |
844 | stereo->type = AV_STEREO3D_COLUMNS; | |
845 | break; | |
846 | case 2: | |
847 | stereo->type = AV_STEREO3D_LINES; | |
848 | break; | |
849 | case 3: | |
850 | if (h->quincunx_subsampling) | |
851 | stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX; | |
852 | else | |
853 | stereo->type = AV_STEREO3D_SIDEBYSIDE; | |
854 | break; | |
855 | case 4: | |
856 | stereo->type = AV_STEREO3D_TOPBOTTOM; | |
857 | break; | |
858 | case 5: | |
859 | stereo->type = AV_STEREO3D_FRAMESEQUENCE; | |
860 | break; | |
861 | case 6: | |
862 | stereo->type = AV_STEREO3D_2D; | |
863 | break; | |
864 | } | |
865 | ||
866 | if (h->content_interpretation_type == 2) | |
867 | stereo->flags = AV_STEREO3D_FLAG_INVERT; | |
868 | } | |
869 | } | |
870 | ||
871 | if (h->sei_display_orientation_present && | |
872 | (h->sei_anticlockwise_rotation || h->sei_hflip || h->sei_vflip)) { | |
873 | double angle = h->sei_anticlockwise_rotation * 360 / (double) (1 << 16); | |
874 | AVFrameSideData *rotation = av_frame_new_side_data(&cur->f, | |
875 | AV_FRAME_DATA_DISPLAYMATRIX, | |
876 | sizeof(int32_t) * 9); | |
877 | if (rotation) { | |
878 | av_display_rotation_set((int32_t *)rotation->data, angle); | |
879 | av_display_matrix_flip((int32_t *)rotation->data, | |
f6fa7814 | 880 | h->sei_hflip, h->sei_vflip); |
2ba45a60 DM |
881 | } |
882 | } | |
883 | ||
884 | cur->mmco_reset = h->mmco_reset; | |
885 | h->mmco_reset = 0; | |
886 | ||
887 | // FIXME do something with unavailable reference frames | |
888 | ||
889 | /* Sort B-frames into display order */ | |
890 | ||
891 | if (h->sps.bitstream_restriction_flag && | |
892 | h->avctx->has_b_frames < h->sps.num_reorder_frames) { | |
893 | h->avctx->has_b_frames = h->sps.num_reorder_frames; | |
894 | h->low_delay = 0; | |
895 | } | |
896 | ||
897 | if (h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT && | |
898 | !h->sps.bitstream_restriction_flag) { | |
899 | h->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1; | |
900 | h->low_delay = 0; | |
901 | } | |
902 | ||
903 | for (i = 0; 1; i++) { | |
904 | if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){ | |
905 | if(i) | |
906 | h->last_pocs[i-1] = cur->poc; | |
907 | break; | |
908 | } else if(i) { | |
909 | h->last_pocs[i-1]= h->last_pocs[i]; | |
910 | } | |
911 | } | |
912 | out_of_order = MAX_DELAYED_PIC_COUNT - i; | |
913 | if( cur->f.pict_type == AV_PICTURE_TYPE_B | |
914 | || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2)) | |
915 | out_of_order = FFMAX(out_of_order, 1); | |
916 | if (out_of_order == MAX_DELAYED_PIC_COUNT) { | |
917 | av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]); | |
918 | for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++) | |
919 | h->last_pocs[i] = INT_MIN; | |
920 | h->last_pocs[0] = cur->poc; | |
921 | cur->mmco_reset = 1; | |
922 | } else if(h->avctx->has_b_frames < out_of_order && !h->sps.bitstream_restriction_flag){ | |
923 | av_log(h->avctx, AV_LOG_VERBOSE, "Increasing reorder buffer to %d\n", out_of_order); | |
924 | h->avctx->has_b_frames = out_of_order; | |
925 | h->low_delay = 0; | |
926 | } | |
927 | ||
928 | pics = 0; | |
929 | while (h->delayed_pic[pics]) | |
930 | pics++; | |
931 | ||
932 | av_assert0(pics <= MAX_DELAYED_PIC_COUNT); | |
933 | ||
934 | h->delayed_pic[pics++] = cur; | |
935 | if (cur->reference == 0) | |
936 | cur->reference = DELAYED_PIC_REF; | |
937 | ||
938 | out = h->delayed_pic[0]; | |
939 | out_idx = 0; | |
940 | for (i = 1; h->delayed_pic[i] && | |
941 | !h->delayed_pic[i]->f.key_frame && | |
942 | !h->delayed_pic[i]->mmco_reset; | |
943 | i++) | |
944 | if (h->delayed_pic[i]->poc < out->poc) { | |
945 | out = h->delayed_pic[i]; | |
946 | out_idx = i; | |
947 | } | |
948 | if (h->avctx->has_b_frames == 0 && | |
949 | (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) | |
950 | h->next_outputed_poc = INT_MIN; | |
951 | out_of_order = out->poc < h->next_outputed_poc; | |
952 | ||
953 | if (out_of_order || pics > h->avctx->has_b_frames) { | |
954 | out->reference &= ~DELAYED_PIC_REF; | |
955 | // for frame threading, the owner must be the second field's thread or | |
956 | // else the first thread can release the picture and reuse it unsafely | |
957 | for (i = out_idx; h->delayed_pic[i]; i++) | |
958 | h->delayed_pic[i] = h->delayed_pic[i + 1]; | |
959 | } | |
960 | if (!out_of_order && pics > h->avctx->has_b_frames) { | |
961 | h->next_output_pic = out; | |
962 | if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) { | |
963 | h->next_outputed_poc = INT_MIN; | |
964 | } else | |
965 | h->next_outputed_poc = out->poc; | |
966 | } else { | |
967 | av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : ""); | |
968 | } | |
969 | ||
970 | if (h->next_output_pic) { | |
971 | if (h->next_output_pic->recovered) { | |
972 | // We have reached an recovery point and all frames after it in | |
973 | // display order are "recovered". | |
974 | h->frame_recovered |= FRAME_RECOVERED_SEI; | |
975 | } | |
976 | h->next_output_pic->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI); | |
977 | } | |
978 | ||
979 | if (setup_finished && !h->avctx->hwaccel) | |
980 | ff_thread_finish_setup(h->avctx); | |
981 | } | |
982 | ||
983 | int ff_pred_weight_table(H264Context *h) | |
984 | { | |
985 | int list, i; | |
986 | int luma_def, chroma_def; | |
987 | ||
988 | h->use_weight = 0; | |
989 | h->use_weight_chroma = 0; | |
990 | h->luma_log2_weight_denom = get_ue_golomb(&h->gb); | |
991 | if (h->sps.chroma_format_idc) | |
992 | h->chroma_log2_weight_denom = get_ue_golomb(&h->gb); | |
993 | luma_def = 1 << h->luma_log2_weight_denom; | |
994 | chroma_def = 1 << h->chroma_log2_weight_denom; | |
995 | ||
996 | for (list = 0; list < 2; list++) { | |
997 | h->luma_weight_flag[list] = 0; | |
998 | h->chroma_weight_flag[list] = 0; | |
999 | for (i = 0; i < h->ref_count[list]; i++) { | |
1000 | int luma_weight_flag, chroma_weight_flag; | |
1001 | ||
1002 | luma_weight_flag = get_bits1(&h->gb); | |
1003 | if (luma_weight_flag) { | |
1004 | h->luma_weight[i][list][0] = get_se_golomb(&h->gb); | |
1005 | h->luma_weight[i][list][1] = get_se_golomb(&h->gb); | |
1006 | if (h->luma_weight[i][list][0] != luma_def || | |
1007 | h->luma_weight[i][list][1] != 0) { | |
1008 | h->use_weight = 1; | |
1009 | h->luma_weight_flag[list] = 1; | |
1010 | } | |
1011 | } else { | |
1012 | h->luma_weight[i][list][0] = luma_def; | |
1013 | h->luma_weight[i][list][1] = 0; | |
1014 | } | |
1015 | ||
1016 | if (h->sps.chroma_format_idc) { | |
1017 | chroma_weight_flag = get_bits1(&h->gb); | |
1018 | if (chroma_weight_flag) { | |
1019 | int j; | |
1020 | for (j = 0; j < 2; j++) { | |
1021 | h->chroma_weight[i][list][j][0] = get_se_golomb(&h->gb); | |
1022 | h->chroma_weight[i][list][j][1] = get_se_golomb(&h->gb); | |
1023 | if (h->chroma_weight[i][list][j][0] != chroma_def || | |
1024 | h->chroma_weight[i][list][j][1] != 0) { | |
1025 | h->use_weight_chroma = 1; | |
1026 | h->chroma_weight_flag[list] = 1; | |
1027 | } | |
1028 | } | |
1029 | } else { | |
1030 | int j; | |
1031 | for (j = 0; j < 2; j++) { | |
1032 | h->chroma_weight[i][list][j][0] = chroma_def; | |
1033 | h->chroma_weight[i][list][j][1] = 0; | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | } | |
1038 | if (h->slice_type_nos != AV_PICTURE_TYPE_B) | |
1039 | break; | |
1040 | } | |
1041 | h->use_weight = h->use_weight || h->use_weight_chroma; | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | /** | |
1046 | * instantaneous decoder refresh. | |
1047 | */ | |
1048 | static void idr(H264Context *h) | |
1049 | { | |
1050 | int i; | |
1051 | ff_h264_remove_all_refs(h); | |
1052 | h->prev_frame_num = | |
1053 | h->prev_frame_num_offset = 0; | |
1054 | h->prev_poc_msb = 1<<16; | |
1055 | h->prev_poc_lsb = 0; | |
1056 | for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) | |
1057 | h->last_pocs[i] = INT_MIN; | |
1058 | } | |
1059 | ||
1060 | /* forget old pics after a seek */ | |
1061 | void ff_h264_flush_change(H264Context *h) | |
1062 | { | |
1063 | int i, j; | |
1064 | ||
1065 | h->outputed_poc = h->next_outputed_poc = INT_MIN; | |
1066 | h->prev_interlaced_frame = 1; | |
1067 | idr(h); | |
1068 | ||
1069 | h->prev_frame_num = -1; | |
1070 | if (h->cur_pic_ptr) { | |
1071 | h->cur_pic_ptr->reference = 0; | |
1072 | for (j=i=0; h->delayed_pic[i]; i++) | |
1073 | if (h->delayed_pic[i] != h->cur_pic_ptr) | |
1074 | h->delayed_pic[j++] = h->delayed_pic[i]; | |
1075 | h->delayed_pic[j] = NULL; | |
1076 | } | |
1077 | h->first_field = 0; | |
1078 | memset(h->ref_list[0], 0, sizeof(h->ref_list[0])); | |
1079 | memset(h->ref_list[1], 0, sizeof(h->ref_list[1])); | |
1080 | memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0])); | |
1081 | memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1])); | |
1082 | ff_h264_reset_sei(h); | |
1083 | h->recovery_frame = -1; | |
1084 | h->frame_recovered = 0; | |
1085 | h->list_count = 0; | |
1086 | h->current_slice = 0; | |
1087 | h->mmco_reset = 1; | |
1088 | } | |
1089 | ||
1090 | /* forget old pics after a seek */ | |
1091 | static void flush_dpb(AVCodecContext *avctx) | |
1092 | { | |
1093 | H264Context *h = avctx->priv_data; | |
1094 | int i; | |
1095 | ||
1096 | for (i = 0; i <= MAX_DELAYED_PIC_COUNT; i++) { | |
1097 | if (h->delayed_pic[i]) | |
1098 | h->delayed_pic[i]->reference = 0; | |
1099 | h->delayed_pic[i] = NULL; | |
1100 | } | |
1101 | ||
1102 | ff_h264_flush_change(h); | |
1103 | ||
1104 | if (h->DPB) | |
1105 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) | |
1106 | ff_h264_unref_picture(h, &h->DPB[i]); | |
1107 | h->cur_pic_ptr = NULL; | |
1108 | ff_h264_unref_picture(h, &h->cur_pic); | |
1109 | ||
1110 | h->mb_x = h->mb_y = 0; | |
1111 | ||
1112 | h->parse_context.state = -1; | |
1113 | h->parse_context.frame_start_found = 0; | |
1114 | h->parse_context.overread = 0; | |
1115 | h->parse_context.overread_index = 0; | |
1116 | h->parse_context.index = 0; | |
1117 | h->parse_context.last_index = 0; | |
1118 | ||
1119 | ff_h264_free_tables(h, 1); | |
1120 | h->context_initialized = 0; | |
1121 | } | |
1122 | ||
1123 | int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc) | |
1124 | { | |
1125 | const int max_frame_num = 1 << h->sps.log2_max_frame_num; | |
1126 | int field_poc[2]; | |
1127 | ||
1128 | h->frame_num_offset = h->prev_frame_num_offset; | |
1129 | if (h->frame_num < h->prev_frame_num) | |
1130 | h->frame_num_offset += max_frame_num; | |
1131 | ||
1132 | if (h->sps.poc_type == 0) { | |
1133 | const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb; | |
1134 | ||
1135 | if (h->poc_lsb < h->prev_poc_lsb && | |
1136 | h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2) | |
1137 | h->poc_msb = h->prev_poc_msb + max_poc_lsb; | |
1138 | else if (h->poc_lsb > h->prev_poc_lsb && | |
1139 | h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2) | |
1140 | h->poc_msb = h->prev_poc_msb - max_poc_lsb; | |
1141 | else | |
1142 | h->poc_msb = h->prev_poc_msb; | |
1143 | field_poc[0] = | |
1144 | field_poc[1] = h->poc_msb + h->poc_lsb; | |
1145 | if (h->picture_structure == PICT_FRAME) | |
1146 | field_poc[1] += h->delta_poc_bottom; | |
1147 | } else if (h->sps.poc_type == 1) { | |
1148 | int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; | |
1149 | int i; | |
1150 | ||
1151 | if (h->sps.poc_cycle_length != 0) | |
1152 | abs_frame_num = h->frame_num_offset + h->frame_num; | |
1153 | else | |
1154 | abs_frame_num = 0; | |
1155 | ||
1156 | if (h->nal_ref_idc == 0 && abs_frame_num > 0) | |
1157 | abs_frame_num--; | |
1158 | ||
1159 | expected_delta_per_poc_cycle = 0; | |
1160 | for (i = 0; i < h->sps.poc_cycle_length; i++) | |
1161 | // FIXME integrate during sps parse | |
1162 | expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i]; | |
1163 | ||
1164 | if (abs_frame_num > 0) { | |
1165 | int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length; | |
1166 | int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length; | |
1167 | ||
1168 | expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle; | |
1169 | for (i = 0; i <= frame_num_in_poc_cycle; i++) | |
1170 | expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i]; | |
1171 | } else | |
1172 | expectedpoc = 0; | |
1173 | ||
1174 | if (h->nal_ref_idc == 0) | |
1175 | expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic; | |
1176 | ||
1177 | field_poc[0] = expectedpoc + h->delta_poc[0]; | |
1178 | field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field; | |
1179 | ||
1180 | if (h->picture_structure == PICT_FRAME) | |
1181 | field_poc[1] += h->delta_poc[1]; | |
1182 | } else { | |
1183 | int poc = 2 * (h->frame_num_offset + h->frame_num); | |
1184 | ||
1185 | if (!h->nal_ref_idc) | |
1186 | poc--; | |
1187 | ||
1188 | field_poc[0] = poc; | |
1189 | field_poc[1] = poc; | |
1190 | } | |
1191 | ||
1192 | if (h->picture_structure != PICT_BOTTOM_FIELD) | |
1193 | pic_field_poc[0] = field_poc[0]; | |
1194 | if (h->picture_structure != PICT_TOP_FIELD) | |
1195 | pic_field_poc[1] = field_poc[1]; | |
1196 | *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]); | |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | /** | |
1202 | * Compute profile from profile_idc and constraint_set?_flags. | |
1203 | * | |
1204 | * @param sps SPS | |
1205 | * | |
1206 | * @return profile as defined by FF_PROFILE_H264_* | |
1207 | */ | |
1208 | int ff_h264_get_profile(SPS *sps) | |
1209 | { | |
1210 | int profile = sps->profile_idc; | |
1211 | ||
1212 | switch (sps->profile_idc) { | |
1213 | case FF_PROFILE_H264_BASELINE: | |
1214 | // constraint_set1_flag set to 1 | |
1215 | profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0; | |
1216 | break; | |
1217 | case FF_PROFILE_H264_HIGH_10: | |
1218 | case FF_PROFILE_H264_HIGH_422: | |
1219 | case FF_PROFILE_H264_HIGH_444_PREDICTIVE: | |
1220 | // constraint_set3_flag set to 1 | |
1221 | profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0; | |
1222 | break; | |
1223 | } | |
1224 | ||
1225 | return profile; | |
1226 | } | |
1227 | ||
1228 | int ff_h264_set_parameter_from_sps(H264Context *h) | |
1229 | { | |
1230 | if (h->flags & CODEC_FLAG_LOW_DELAY || | |
1231 | (h->sps.bitstream_restriction_flag && | |
1232 | !h->sps.num_reorder_frames)) { | |
1233 | if (h->avctx->has_b_frames > 1 || h->delayed_pic[0]) | |
1234 | av_log(h->avctx, AV_LOG_WARNING, "Delayed frames seen. " | |
1235 | "Reenabling low delay requires a codec flush.\n"); | |
1236 | else | |
1237 | h->low_delay = 1; | |
1238 | } | |
1239 | ||
1240 | if (h->avctx->has_b_frames < 2) | |
1241 | h->avctx->has_b_frames = !h->low_delay; | |
1242 | ||
1243 | if (h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma || | |
1244 | h->cur_chroma_format_idc != h->sps.chroma_format_idc) { | |
1245 | if (h->avctx->codec && | |
1246 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU && | |
1247 | (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) { | |
1248 | av_log(h->avctx, AV_LOG_ERROR, | |
1249 | "VDPAU decoding does not support video colorspace.\n"); | |
1250 | return AVERROR_INVALIDDATA; | |
1251 | } | |
1252 | if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 14 && | |
1253 | h->sps.bit_depth_luma != 11 && h->sps.bit_depth_luma != 13) { | |
1254 | h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma; | |
1255 | h->cur_chroma_format_idc = h->sps.chroma_format_idc; | |
1256 | h->pixel_shift = h->sps.bit_depth_luma > 8; | |
1257 | ||
1258 | ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma, | |
1259 | h->sps.chroma_format_idc); | |
1260 | ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); | |
1261 | ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma); | |
1262 | ff_h264_pred_init(&h->hpc, h->avctx->codec_id, h->sps.bit_depth_luma, | |
1263 | h->sps.chroma_format_idc); | |
1264 | ||
1265 | if (CONFIG_ERROR_RESILIENCE) | |
1266 | ff_me_cmp_init(&h->mecc, h->avctx); | |
1267 | ff_videodsp_init(&h->vdsp, h->sps.bit_depth_luma); | |
1268 | } else { | |
1269 | av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n", | |
1270 | h->sps.bit_depth_luma); | |
1271 | return AVERROR_INVALIDDATA; | |
1272 | } | |
1273 | } | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | int ff_set_ref_count(H264Context *h) | |
1278 | { | |
1279 | int ref_count[2], list_count; | |
1280 | int num_ref_idx_active_override_flag; | |
1281 | ||
1282 | // set defaults, might be overridden a few lines later | |
1283 | ref_count[0] = h->pps.ref_count[0]; | |
1284 | ref_count[1] = h->pps.ref_count[1]; | |
1285 | ||
1286 | if (h->slice_type_nos != AV_PICTURE_TYPE_I) { | |
1287 | unsigned max[2]; | |
1288 | max[0] = max[1] = h->picture_structure == PICT_FRAME ? 15 : 31; | |
1289 | ||
1290 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) | |
1291 | h->direct_spatial_mv_pred = get_bits1(&h->gb); | |
1292 | num_ref_idx_active_override_flag = get_bits1(&h->gb); | |
1293 | ||
1294 | if (num_ref_idx_active_override_flag) { | |
1295 | ref_count[0] = get_ue_golomb(&h->gb) + 1; | |
1296 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) { | |
1297 | ref_count[1] = get_ue_golomb(&h->gb) + 1; | |
1298 | } else | |
1299 | // full range is spec-ok in this case, even for frames | |
1300 | ref_count[1] = 1; | |
1301 | } | |
1302 | ||
1303 | if (ref_count[0]-1 > max[0] || ref_count[1]-1 > max[1]){ | |
1304 | av_log(h->avctx, AV_LOG_ERROR, "reference overflow %u > %u or %u > %u\n", ref_count[0]-1, max[0], ref_count[1]-1, max[1]); | |
1305 | h->ref_count[0] = h->ref_count[1] = 0; | |
1306 | h->list_count = 0; | |
1307 | return AVERROR_INVALIDDATA; | |
1308 | } | |
1309 | ||
1310 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) | |
1311 | list_count = 2; | |
1312 | else | |
1313 | list_count = 1; | |
1314 | } else { | |
1315 | list_count = 0; | |
1316 | ref_count[0] = ref_count[1] = 0; | |
1317 | } | |
1318 | ||
1319 | if (list_count != h->list_count || | |
1320 | ref_count[0] != h->ref_count[0] || | |
1321 | ref_count[1] != h->ref_count[1]) { | |
1322 | h->ref_count[0] = ref_count[0]; | |
1323 | h->ref_count[1] = ref_count[1]; | |
1324 | h->list_count = list_count; | |
1325 | return 1; | |
1326 | } | |
1327 | ||
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static const uint8_t start_code[] = { 0x00, 0x00, 0x01 }; | |
1332 | ||
1333 | static int get_bit_length(H264Context *h, const uint8_t *buf, | |
1334 | const uint8_t *ptr, int dst_length, | |
1335 | int i, int next_avc) | |
1336 | { | |
1337 | if ((h->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc && | |
1338 | buf[i] == 0x00 && buf[i + 1] == 0x00 && | |
1339 | buf[i + 2] == 0x01 && buf[i + 3] == 0xE0) | |
1340 | h->workaround_bugs |= FF_BUG_TRUNCATED; | |
1341 | ||
1342 | if (!(h->workaround_bugs & FF_BUG_TRUNCATED)) | |
1343 | while (dst_length > 0 && ptr[dst_length - 1] == 0) | |
1344 | dst_length--; | |
1345 | ||
1346 | if (!dst_length) | |
1347 | return 0; | |
1348 | ||
1349 | return 8 * dst_length - decode_rbsp_trailing(h, ptr + dst_length - 1); | |
1350 | } | |
1351 | ||
1352 | static int get_last_needed_nal(H264Context *h, const uint8_t *buf, int buf_size) | |
1353 | { | |
1354 | int next_avc = h->is_avc ? 0 : buf_size; | |
1355 | int nal_index = 0; | |
1356 | int buf_index = 0; | |
1357 | int nals_needed = 0; | |
1358 | int first_slice = 0; | |
1359 | ||
1360 | while(1) { | |
1361 | int nalsize = 0; | |
1362 | int dst_length, bit_length, consumed; | |
1363 | const uint8_t *ptr; | |
1364 | ||
1365 | if (buf_index >= next_avc) { | |
1366 | nalsize = get_avc_nalsize(h, buf, buf_size, &buf_index); | |
1367 | if (nalsize < 0) | |
1368 | break; | |
1369 | next_avc = buf_index + nalsize; | |
1370 | } else { | |
1371 | buf_index = find_start_code(buf, buf_size, buf_index, next_avc); | |
1372 | if (buf_index >= buf_size) | |
1373 | break; | |
1374 | if (buf_index >= next_avc) | |
1375 | continue; | |
1376 | } | |
1377 | ||
1378 | ptr = ff_h264_decode_nal(h, buf + buf_index, &dst_length, &consumed, | |
1379 | next_avc - buf_index); | |
1380 | ||
1381 | if (!ptr || dst_length < 0) | |
1382 | return AVERROR_INVALIDDATA; | |
1383 | ||
1384 | buf_index += consumed; | |
1385 | ||
1386 | bit_length = get_bit_length(h, buf, ptr, dst_length, | |
1387 | buf_index, next_avc); | |
1388 | nal_index++; | |
1389 | ||
1390 | /* packets can sometimes contain multiple PPS/SPS, | |
1391 | * e.g. two PAFF field pictures in one packet, or a demuxer | |
1392 | * which splits NALs strangely if so, when frame threading we | |
1393 | * can't start the next thread until we've read all of them */ | |
1394 | switch (h->nal_unit_type) { | |
1395 | case NAL_SPS: | |
1396 | case NAL_PPS: | |
1397 | nals_needed = nal_index; | |
1398 | break; | |
1399 | case NAL_DPA: | |
1400 | case NAL_IDR_SLICE: | |
1401 | case NAL_SLICE: | |
1402 | init_get_bits(&h->gb, ptr, bit_length); | |
1403 | if (!get_ue_golomb(&h->gb) || | |
1404 | !first_slice || | |
1405 | first_slice != h->nal_unit_type) | |
1406 | nals_needed = nal_index; | |
1407 | if (!first_slice) | |
1408 | first_slice = h->nal_unit_type; | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | return nals_needed; | |
1413 | } | |
1414 | ||
1415 | static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, | |
1416 | int parse_extradata) | |
1417 | { | |
1418 | AVCodecContext *const avctx = h->avctx; | |
1419 | H264Context *hx; ///< thread context | |
1420 | int buf_index; | |
1421 | unsigned context_count; | |
1422 | int next_avc; | |
1423 | int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts | |
1424 | int nal_index; | |
1425 | int idr_cleared=0; | |
1426 | int ret = 0; | |
1427 | ||
1428 | h->nal_unit_type= 0; | |
1429 | ||
1430 | if(!h->slice_context_count) | |
1431 | h->slice_context_count= 1; | |
1432 | h->max_contexts = h->slice_context_count; | |
1433 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) { | |
1434 | h->current_slice = 0; | |
1435 | if (!h->first_field) | |
1436 | h->cur_pic_ptr = NULL; | |
1437 | ff_h264_reset_sei(h); | |
1438 | } | |
1439 | ||
1440 | if (h->nal_length_size == 4) { | |
1441 | if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) { | |
1442 | h->is_avc = 0; | |
1443 | }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size) | |
1444 | h->is_avc = 1; | |
1445 | } | |
1446 | ||
1447 | if (avctx->active_thread_type & FF_THREAD_FRAME) | |
1448 | nals_needed = get_last_needed_nal(h, buf, buf_size); | |
1449 | ||
1450 | { | |
1451 | buf_index = 0; | |
1452 | context_count = 0; | |
1453 | next_avc = h->is_avc ? 0 : buf_size; | |
1454 | nal_index = 0; | |
1455 | for (;;) { | |
1456 | int consumed; | |
1457 | int dst_length; | |
1458 | int bit_length; | |
1459 | const uint8_t *ptr; | |
1460 | int nalsize = 0; | |
1461 | int err; | |
1462 | ||
1463 | if (buf_index >= next_avc) { | |
1464 | nalsize = get_avc_nalsize(h, buf, buf_size, &buf_index); | |
1465 | if (nalsize < 0) | |
1466 | break; | |
1467 | next_avc = buf_index + nalsize; | |
1468 | } else { | |
1469 | buf_index = find_start_code(buf, buf_size, buf_index, next_avc); | |
1470 | if (buf_index >= buf_size) | |
1471 | break; | |
1472 | if (buf_index >= next_avc) | |
1473 | continue; | |
1474 | } | |
1475 | ||
1476 | hx = h->thread_context[context_count]; | |
1477 | ||
1478 | ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length, | |
1479 | &consumed, next_avc - buf_index); | |
1480 | if (!ptr || dst_length < 0) { | |
1481 | ret = -1; | |
1482 | goto end; | |
1483 | } | |
1484 | ||
1485 | bit_length = get_bit_length(h, buf, ptr, dst_length, | |
1486 | buf_index + consumed, next_avc); | |
1487 | ||
1488 | if (h->avctx->debug & FF_DEBUG_STARTCODE) | |
1489 | av_log(h->avctx, AV_LOG_DEBUG, | |
1490 | "NAL %d/%d at %d/%d length %d\n", | |
1491 | hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length); | |
1492 | ||
1493 | if (h->is_avc && (nalsize != consumed) && nalsize) | |
1494 | av_log(h->avctx, AV_LOG_DEBUG, | |
1495 | "AVC: Consumed only %d bytes instead of %d\n", | |
1496 | consumed, nalsize); | |
1497 | ||
1498 | buf_index += consumed; | |
1499 | nal_index++; | |
1500 | ||
1501 | if (avctx->skip_frame >= AVDISCARD_NONREF && | |
1502 | h->nal_ref_idc == 0 && | |
1503 | h->nal_unit_type != NAL_SEI) | |
1504 | continue; | |
1505 | ||
1506 | again: | |
1507 | if ( !(avctx->active_thread_type & FF_THREAD_FRAME) | |
1508 | || nals_needed >= nal_index) | |
1509 | h->au_pps_id = -1; | |
1510 | /* Ignore per frame NAL unit type during extradata | |
1511 | * parsing. Decoding slices is not possible in codec init | |
1512 | * with frame-mt */ | |
1513 | if (parse_extradata) { | |
1514 | switch (hx->nal_unit_type) { | |
1515 | case NAL_IDR_SLICE: | |
1516 | case NAL_SLICE: | |
1517 | case NAL_DPA: | |
1518 | case NAL_DPB: | |
1519 | case NAL_DPC: | |
1520 | av_log(h->avctx, AV_LOG_WARNING, | |
1521 | "Ignoring NAL %d in global header/extradata\n", | |
1522 | hx->nal_unit_type); | |
1523 | // fall through to next case | |
1524 | case NAL_AUXILIARY_SLICE: | |
1525 | hx->nal_unit_type = NAL_FF_IGNORE; | |
1526 | } | |
1527 | } | |
1528 | ||
1529 | err = 0; | |
1530 | ||
1531 | switch (hx->nal_unit_type) { | |
1532 | case NAL_IDR_SLICE: | |
1533 | if ((ptr[0] & 0xFC) == 0x98) { | |
1534 | av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n"); | |
1535 | h->next_outputed_poc = INT_MIN; | |
1536 | ret = -1; | |
1537 | goto end; | |
1538 | } | |
1539 | if (h->nal_unit_type != NAL_IDR_SLICE) { | |
1540 | av_log(h->avctx, AV_LOG_ERROR, | |
1541 | "Invalid mix of idr and non-idr slices\n"); | |
1542 | ret = -1; | |
1543 | goto end; | |
1544 | } | |
1545 | if(!idr_cleared) | |
1546 | idr(h); // FIXME ensure we don't lose some frames if there is reordering | |
1547 | idr_cleared = 1; | |
1548 | h->has_recovery_point = 1; | |
1549 | case NAL_SLICE: | |
1550 | init_get_bits(&hx->gb, ptr, bit_length); | |
1551 | hx->intra_gb_ptr = | |
1552 | hx->inter_gb_ptr = &hx->gb; | |
1553 | hx->data_partitioning = 0; | |
1554 | ||
1555 | if ((err = ff_h264_decode_slice_header(hx, h))) | |
1556 | break; | |
1557 | ||
1558 | if (h->sei_recovery_frame_cnt >= 0) { | |
1559 | if (h->frame_num != h->sei_recovery_frame_cnt || hx->slice_type_nos != AV_PICTURE_TYPE_I) | |
1560 | h->valid_recovery_point = 1; | |
1561 | ||
1562 | if ( h->recovery_frame < 0 | |
1563 | || ((h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1)) > h->sei_recovery_frame_cnt) { | |
1564 | h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) & | |
1565 | ((1 << h->sps.log2_max_frame_num) - 1); | |
1566 | ||
1567 | if (!h->valid_recovery_point) | |
1568 | h->recovery_frame = h->frame_num; | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | h->cur_pic_ptr->f.key_frame |= | |
1573 | (hx->nal_unit_type == NAL_IDR_SLICE); | |
1574 | ||
1575 | if (hx->nal_unit_type == NAL_IDR_SLICE || | |
1576 | h->recovery_frame == h->frame_num) { | |
1577 | h->recovery_frame = -1; | |
1578 | h->cur_pic_ptr->recovered = 1; | |
1579 | } | |
1580 | // If we have an IDR, all frames after it in decoded order are | |
1581 | // "recovered". | |
1582 | if (hx->nal_unit_type == NAL_IDR_SLICE) | |
1583 | h->frame_recovered |= FRAME_RECOVERED_IDR; | |
1584 | h->frame_recovered |= 3*!!(avctx->flags2 & CODEC_FLAG2_SHOW_ALL); | |
1585 | h->frame_recovered |= 3*!!(avctx->flags & CODEC_FLAG_OUTPUT_CORRUPT); | |
1586 | #if 1 | |
1587 | h->cur_pic_ptr->recovered |= h->frame_recovered; | |
1588 | #else | |
1589 | h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR); | |
1590 | #endif | |
1591 | ||
1592 | if (h->current_slice == 1) { | |
1593 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) | |
1594 | decode_postinit(h, nal_index >= nals_needed); | |
1595 | ||
1596 | if (h->avctx->hwaccel && | |
1597 | (ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0)) < 0) | |
1598 | return ret; | |
1599 | if (CONFIG_H264_VDPAU_DECODER && | |
1600 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) | |
1601 | ff_vdpau_h264_picture_start(h); | |
1602 | } | |
1603 | ||
1604 | if (hx->redundant_pic_count == 0) { | |
1605 | if (avctx->hwaccel) { | |
1606 | ret = avctx->hwaccel->decode_slice(avctx, | |
1607 | &buf[buf_index - consumed], | |
1608 | consumed); | |
1609 | if (ret < 0) | |
1610 | return ret; | |
1611 | } else if (CONFIG_H264_VDPAU_DECODER && | |
1612 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) { | |
1613 | ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], | |
1614 | start_code, | |
1615 | sizeof(start_code)); | |
1616 | ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], | |
1617 | &buf[buf_index - consumed], | |
1618 | consumed); | |
1619 | } else | |
1620 | context_count++; | |
1621 | } | |
1622 | break; | |
1623 | case NAL_DPA: | |
1624 | if (h->avctx->flags & CODEC_FLAG2_CHUNKS) { | |
1625 | av_log(h->avctx, AV_LOG_ERROR, | |
1626 | "Decoding in chunks is not supported for " | |
1627 | "partitioned slices.\n"); | |
1628 | return AVERROR(ENOSYS); | |
1629 | } | |
1630 | ||
1631 | init_get_bits(&hx->gb, ptr, bit_length); | |
1632 | hx->intra_gb_ptr = | |
1633 | hx->inter_gb_ptr = NULL; | |
1634 | ||
1635 | if ((err = ff_h264_decode_slice_header(hx, h))) { | |
1636 | /* make sure data_partitioning is cleared if it was set | |
1637 | * before, so we don't try decoding a slice without a valid | |
1638 | * slice header later */ | |
1639 | h->data_partitioning = 0; | |
1640 | break; | |
1641 | } | |
1642 | ||
1643 | hx->data_partitioning = 1; | |
1644 | break; | |
1645 | case NAL_DPB: | |
1646 | init_get_bits(&hx->intra_gb, ptr, bit_length); | |
1647 | hx->intra_gb_ptr = &hx->intra_gb; | |
1648 | break; | |
1649 | case NAL_DPC: | |
1650 | init_get_bits(&hx->inter_gb, ptr, bit_length); | |
1651 | hx->inter_gb_ptr = &hx->inter_gb; | |
1652 | ||
1653 | av_log(h->avctx, AV_LOG_ERROR, "Partitioned H.264 support is incomplete\n"); | |
1654 | break; | |
1655 | ||
1656 | if (hx->redundant_pic_count == 0 && | |
1657 | hx->intra_gb_ptr && | |
1658 | hx->data_partitioning && | |
1659 | h->cur_pic_ptr && h->context_initialized && | |
1660 | (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && | |
1661 | (avctx->skip_frame < AVDISCARD_BIDIR || | |
1662 | hx->slice_type_nos != AV_PICTURE_TYPE_B) && | |
1663 | (avctx->skip_frame < AVDISCARD_NONINTRA || | |
1664 | hx->slice_type_nos == AV_PICTURE_TYPE_I) && | |
1665 | avctx->skip_frame < AVDISCARD_ALL) | |
1666 | context_count++; | |
1667 | break; | |
1668 | case NAL_SEI: | |
1669 | init_get_bits(&h->gb, ptr, bit_length); | |
1670 | ret = ff_h264_decode_sei(h); | |
1671 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) | |
1672 | goto end; | |
1673 | break; | |
1674 | case NAL_SPS: | |
1675 | init_get_bits(&h->gb, ptr, bit_length); | |
1676 | if (ff_h264_decode_seq_parameter_set(h) < 0 && (h->is_avc ? nalsize : 1)) { | |
1677 | av_log(h->avctx, AV_LOG_DEBUG, | |
1678 | "SPS decoding failure, trying again with the complete NAL\n"); | |
1679 | if (h->is_avc) | |
1680 | av_assert0(next_avc - buf_index + consumed == nalsize); | |
1681 | if ((next_avc - buf_index + consumed - 1) >= INT_MAX/8) | |
1682 | break; | |
1683 | init_get_bits(&h->gb, &buf[buf_index + 1 - consumed], | |
1684 | 8*(next_avc - buf_index + consumed - 1)); | |
1685 | ff_h264_decode_seq_parameter_set(h); | |
1686 | } | |
1687 | ||
1688 | break; | |
1689 | case NAL_PPS: | |
1690 | init_get_bits(&h->gb, ptr, bit_length); | |
1691 | ret = ff_h264_decode_picture_parameter_set(h, bit_length); | |
1692 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) | |
1693 | goto end; | |
1694 | break; | |
1695 | case NAL_AUD: | |
1696 | case NAL_END_SEQUENCE: | |
1697 | case NAL_END_STREAM: | |
1698 | case NAL_FILLER_DATA: | |
1699 | case NAL_SPS_EXT: | |
1700 | case NAL_AUXILIARY_SLICE: | |
1701 | break; | |
1702 | case NAL_FF_IGNORE: | |
1703 | break; | |
1704 | default: | |
1705 | av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", | |
1706 | hx->nal_unit_type, bit_length); | |
1707 | } | |
1708 | ||
1709 | if (context_count == h->max_contexts) { | |
1710 | ret = ff_h264_execute_decode_slices(h, context_count); | |
1711 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) | |
1712 | goto end; | |
1713 | context_count = 0; | |
1714 | } | |
1715 | ||
1716 | if (err < 0 || err == SLICE_SKIPED) { | |
1717 | if (err < 0) | |
1718 | av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n"); | |
1719 | h->ref_count[0] = h->ref_count[1] = h->list_count = 0; | |
1720 | } else if (err == SLICE_SINGLETHREAD) { | |
1721 | /* Slice could not be decoded in parallel mode, copy down | |
1722 | * NAL unit stuff to context 0 and restart. Note that | |
1723 | * rbsp_buffer is not transferred, but since we no longer | |
1724 | * run in parallel mode this should not be an issue. */ | |
1725 | h->nal_unit_type = hx->nal_unit_type; | |
1726 | h->nal_ref_idc = hx->nal_ref_idc; | |
1727 | hx = h; | |
1728 | goto again; | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | if (context_count) { | |
1733 | ret = ff_h264_execute_decode_slices(h, context_count); | |
1734 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) | |
1735 | goto end; | |
1736 | } | |
1737 | ||
1738 | ret = 0; | |
1739 | end: | |
1740 | /* clean up */ | |
1741 | if (h->cur_pic_ptr && !h->droppable) { | |
1742 | ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, | |
1743 | h->picture_structure == PICT_BOTTOM_FIELD); | |
1744 | } | |
1745 | ||
1746 | return (ret < 0) ? ret : buf_index; | |
1747 | } | |
1748 | ||
1749 | /** | |
1750 | * Return the number of bytes consumed for building the current frame. | |
1751 | */ | |
1752 | static int get_consumed_bytes(int pos, int buf_size) | |
1753 | { | |
1754 | if (pos == 0) | |
1755 | pos = 1; // avoid infinite loops (I doubt that is needed but...) | |
1756 | if (pos + 10 > buf_size) | |
1757 | pos = buf_size; // oops ;) | |
1758 | ||
1759 | return pos; | |
1760 | } | |
1761 | ||
1762 | static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp) | |
1763 | { | |
1764 | AVFrame *src = &srcp->f; | |
1765 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format); | |
1766 | int i; | |
1767 | int ret = av_frame_ref(dst, src); | |
1768 | if (ret < 0) | |
1769 | return ret; | |
1770 | ||
1771 | av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(h), 0); | |
1772 | ||
1773 | if (srcp->sei_recovery_frame_cnt == 0) | |
1774 | dst->key_frame = 1; | |
1775 | if (!srcp->crop) | |
1776 | return 0; | |
1777 | ||
1778 | for (i = 0; i < desc->nb_components; i++) { | |
1779 | int hshift = (i > 0) ? desc->log2_chroma_w : 0; | |
1780 | int vshift = (i > 0) ? desc->log2_chroma_h : 0; | |
1781 | int off = ((srcp->crop_left >> hshift) << h->pixel_shift) + | |
1782 | (srcp->crop_top >> vshift) * dst->linesize[i]; | |
1783 | dst->data[i] += off; | |
1784 | } | |
1785 | return 0; | |
1786 | } | |
1787 | ||
1788 | static int is_extra(const uint8_t *buf, int buf_size) | |
1789 | { | |
1790 | int cnt= buf[5]&0x1f; | |
1791 | const uint8_t *p= buf+6; | |
1792 | while(cnt--){ | |
1793 | int nalsize= AV_RB16(p) + 2; | |
1794 | if(nalsize > buf_size - (p-buf) || p[2]!=0x67) | |
1795 | return 0; | |
1796 | p += nalsize; | |
1797 | } | |
1798 | cnt = *(p++); | |
1799 | if(!cnt) | |
1800 | return 0; | |
1801 | while(cnt--){ | |
1802 | int nalsize= AV_RB16(p) + 2; | |
1803 | if(nalsize > buf_size - (p-buf) || p[2]!=0x68) | |
1804 | return 0; | |
1805 | p += nalsize; | |
1806 | } | |
1807 | return 1; | |
1808 | } | |
1809 | ||
1810 | static int h264_decode_frame(AVCodecContext *avctx, void *data, | |
1811 | int *got_frame, AVPacket *avpkt) | |
1812 | { | |
1813 | const uint8_t *buf = avpkt->data; | |
1814 | int buf_size = avpkt->size; | |
1815 | H264Context *h = avctx->priv_data; | |
1816 | AVFrame *pict = data; | |
1817 | int buf_index = 0; | |
1818 | H264Picture *out; | |
1819 | int i, out_idx; | |
1820 | int ret; | |
1821 | ||
1822 | h->flags = avctx->flags; | |
1823 | /* reset data partitioning here, to ensure GetBitContexts from previous | |
1824 | * packets do not get used. */ | |
1825 | h->data_partitioning = 0; | |
1826 | ||
1827 | /* end of stream, output what is still in the buffers */ | |
1828 | if (buf_size == 0) { | |
1829 | out: | |
1830 | ||
1831 | h->cur_pic_ptr = NULL; | |
1832 | h->first_field = 0; | |
1833 | ||
1834 | // FIXME factorize this with the output code below | |
1835 | out = h->delayed_pic[0]; | |
1836 | out_idx = 0; | |
1837 | for (i = 1; | |
1838 | h->delayed_pic[i] && | |
1839 | !h->delayed_pic[i]->f.key_frame && | |
1840 | !h->delayed_pic[i]->mmco_reset; | |
1841 | i++) | |
1842 | if (h->delayed_pic[i]->poc < out->poc) { | |
1843 | out = h->delayed_pic[i]; | |
1844 | out_idx = i; | |
1845 | } | |
1846 | ||
1847 | for (i = out_idx; h->delayed_pic[i]; i++) | |
1848 | h->delayed_pic[i] = h->delayed_pic[i + 1]; | |
1849 | ||
1850 | if (out) { | |
1851 | out->reference &= ~DELAYED_PIC_REF; | |
1852 | ret = output_frame(h, pict, out); | |
1853 | if (ret < 0) | |
1854 | return ret; | |
1855 | *got_frame = 1; | |
1856 | } | |
1857 | ||
1858 | return buf_index; | |
1859 | } | |
1860 | if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) { | |
1861 | int side_size; | |
1862 | uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size); | |
1863 | if (is_extra(side, side_size)) | |
1864 | ff_h264_decode_extradata(h, side, side_size); | |
1865 | } | |
1866 | if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){ | |
1867 | if (is_extra(buf, buf_size)) | |
1868 | return ff_h264_decode_extradata(h, buf, buf_size); | |
1869 | } | |
1870 | ||
1871 | buf_index = decode_nal_units(h, buf, buf_size, 0); | |
1872 | if (buf_index < 0) | |
1873 | return AVERROR_INVALIDDATA; | |
1874 | ||
1875 | if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) { | |
1876 | av_assert0(buf_index <= buf_size); | |
1877 | goto out; | |
1878 | } | |
1879 | ||
1880 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) { | |
1881 | if (avctx->skip_frame >= AVDISCARD_NONREF || | |
1882 | buf_size >= 4 && !memcmp("Q264", buf, 4)) | |
1883 | return buf_size; | |
1884 | av_log(avctx, AV_LOG_ERROR, "no frame!\n"); | |
1885 | return AVERROR_INVALIDDATA; | |
1886 | } | |
1887 | ||
1888 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) || | |
1889 | (h->mb_y >= h->mb_height && h->mb_height)) { | |
1890 | if (avctx->flags2 & CODEC_FLAG2_CHUNKS) | |
1891 | decode_postinit(h, 1); | |
1892 | ||
1893 | ff_h264_field_end(h, 0); | |
1894 | ||
1895 | /* Wait for second field. */ | |
1896 | *got_frame = 0; | |
1897 | if (h->next_output_pic && ( | |
1898 | h->next_output_pic->recovered)) { | |
1899 | if (!h->next_output_pic->recovered) | |
1900 | h->next_output_pic->f.flags |= AV_FRAME_FLAG_CORRUPT; | |
1901 | ||
1902 | ret = output_frame(h, pict, h->next_output_pic); | |
1903 | if (ret < 0) | |
1904 | return ret; | |
1905 | *got_frame = 1; | |
1906 | if (CONFIG_MPEGVIDEO) { | |
1907 | ff_print_debug_info2(h->avctx, pict, h->er.mbskip_table, | |
1908 | h->next_output_pic->mb_type, | |
1909 | h->next_output_pic->qscale_table, | |
1910 | h->next_output_pic->motion_val, | |
1911 | &h->low_delay, | |
1912 | h->mb_width, h->mb_height, h->mb_stride, 1); | |
1913 | } | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | assert(pict->buf[0] || !*got_frame); | |
1918 | ||
1919 | return get_consumed_bytes(buf_index, buf_size); | |
1920 | } | |
1921 | ||
1922 | av_cold void ff_h264_free_context(H264Context *h) | |
1923 | { | |
1924 | int i; | |
1925 | ||
1926 | ff_h264_free_tables(h, 1); // FIXME cleanup init stuff perhaps | |
1927 | ||
1928 | for (i = 0; i < MAX_SPS_COUNT; i++) | |
1929 | av_freep(h->sps_buffers + i); | |
1930 | ||
1931 | for (i = 0; i < MAX_PPS_COUNT; i++) | |
1932 | av_freep(h->pps_buffers + i); | |
1933 | } | |
1934 | ||
1935 | static av_cold int h264_decode_end(AVCodecContext *avctx) | |
1936 | { | |
1937 | H264Context *h = avctx->priv_data; | |
1938 | ||
1939 | ff_h264_remove_all_refs(h); | |
1940 | ff_h264_free_context(h); | |
1941 | ||
1942 | ff_h264_unref_picture(h, &h->cur_pic); | |
1943 | ||
1944 | return 0; | |
1945 | } | |
1946 | ||
1947 | static const AVProfile profiles[] = { | |
1948 | { FF_PROFILE_H264_BASELINE, "Baseline" }, | |
1949 | { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" }, | |
1950 | { FF_PROFILE_H264_MAIN, "Main" }, | |
1951 | { FF_PROFILE_H264_EXTENDED, "Extended" }, | |
1952 | { FF_PROFILE_H264_HIGH, "High" }, | |
1953 | { FF_PROFILE_H264_HIGH_10, "High 10" }, | |
1954 | { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" }, | |
1955 | { FF_PROFILE_H264_HIGH_422, "High 4:2:2" }, | |
1956 | { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" }, | |
1957 | { FF_PROFILE_H264_HIGH_444, "High 4:4:4" }, | |
1958 | { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" }, | |
1959 | { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" }, | |
1960 | { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" }, | |
1961 | { FF_PROFILE_UNKNOWN }, | |
1962 | }; | |
1963 | ||
1964 | static const AVOption h264_options[] = { | |
1965 | {"is_avc", "is avc", offsetof(H264Context, is_avc), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0}, | |
1966 | {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0}, | |
1967 | {NULL} | |
1968 | }; | |
1969 | ||
1970 | static const AVClass h264_class = { | |
1971 | .class_name = "H264 Decoder", | |
1972 | .item_name = av_default_item_name, | |
1973 | .option = h264_options, | |
1974 | .version = LIBAVUTIL_VERSION_INT, | |
1975 | }; | |
1976 | ||
1977 | AVCodec ff_h264_decoder = { | |
1978 | .name = "h264", | |
1979 | .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), | |
1980 | .type = AVMEDIA_TYPE_VIDEO, | |
1981 | .id = AV_CODEC_ID_H264, | |
1982 | .priv_data_size = sizeof(H264Context), | |
1983 | .init = ff_h264_decode_init, | |
1984 | .close = h264_decode_end, | |
1985 | .decode = h264_decode_frame, | |
1986 | .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | | |
1987 | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS | | |
1988 | CODEC_CAP_FRAME_THREADS, | |
1989 | .flush = flush_dpb, | |
1990 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), | |
1991 | .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context), | |
1992 | .profiles = NULL_IF_CONFIG_SMALL(profiles), | |
1993 | .priv_class = &h264_class, | |
1994 | }; | |
1995 | ||
1996 | #if CONFIG_H264_VDPAU_DECODER | |
1997 | static const AVClass h264_vdpau_class = { | |
1998 | .class_name = "H264 VDPAU Decoder", | |
1999 | .item_name = av_default_item_name, | |
2000 | .option = h264_options, | |
2001 | .version = LIBAVUTIL_VERSION_INT, | |
2002 | }; | |
2003 | ||
2004 | AVCodec ff_h264_vdpau_decoder = { | |
2005 | .name = "h264_vdpau", | |
2006 | .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"), | |
2007 | .type = AVMEDIA_TYPE_VIDEO, | |
2008 | .id = AV_CODEC_ID_H264, | |
2009 | .priv_data_size = sizeof(H264Context), | |
2010 | .init = ff_h264_decode_init, | |
2011 | .close = h264_decode_end, | |
2012 | .decode = h264_decode_frame, | |
2013 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, | |
2014 | .flush = flush_dpb, | |
2015 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264, | |
2016 | AV_PIX_FMT_NONE}, | |
2017 | .profiles = NULL_IF_CONFIG_SMALL(profiles), | |
2018 | .priv_class = &h264_vdpau_class, | |
2019 | }; | |
2020 | #endif |