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 / MPEG-4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include "libavutil/avassert.h"
29 #include "libavutil/display.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/stereo3d.h"
32 #include "internal.h"
33 #include "cabac.h"
34 #include "cabac_functions.h"
35 #include "error_resilience.h"
36 #include "avcodec.h"
37 #include "h264.h"
38 #include "h264dec.h"
39 #include "h264data.h"
40 #include "h264chroma.h"
41 #include "h264_mvpred.h"
42 #include "h264_ps.h"
43 #include "golomb.h"
44 #include "mathops.h"
45 #include "mpegutils.h"
46 #include "mpegvideo.h"
47 #include "rectangle.h"
48 #include "thread.h"
49
50 static const uint8_t field_scan[16+1] = {
51 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
52 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
53 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
54 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
55 };
56
57 static const uint8_t field_scan8x8[64+1] = {
58 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
59 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
60 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
61 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
62 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
63 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
64 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
65 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
66 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
67 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
68 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
69 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
70 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
71 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
72 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
73 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
74 };
75
76 static const uint8_t field_scan8x8_cavlc[64+1] = {
77 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
78 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
79 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
80 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
81 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
82 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
83 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
84 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
85 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
86 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
87 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
88 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
89 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
90 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
91 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
92 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
93 };
94
95 // zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
96 static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
97 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
98 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
99 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
100 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
101 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
102 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
103 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
104 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
105 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
106 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
107 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
108 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
109 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
110 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
111 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
112 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
113 };
114
release_unused_pictures(H264Context * h,int remove_current)115 static void release_unused_pictures(H264Context *h, int remove_current)
116 {
117 int i;
118
119 /* release non reference frames */
120 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
121 if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
122 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
123 ff_h264_unref_picture(h, &h->DPB[i]);
124 }
125 }
126 }
127
alloc_scratch_buffers(H264SliceContext * sl,int linesize)128 static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
129 {
130 const H264Context *h = sl->h264;
131 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
132
133 av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
134 // edge emu needs blocksize + filter length - 1
135 // (= 21x21 for H.264)
136 av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
137
138 av_fast_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0],
139 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
140 av_fast_mallocz(&sl->top_borders[1], &sl->top_borders_allocated[1],
141 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
142
143 if (!sl->bipred_scratchpad || !sl->edge_emu_buffer ||
144 !sl->top_borders[0] || !sl->top_borders[1]) {
145 av_freep(&sl->bipred_scratchpad);
146 av_freep(&sl->edge_emu_buffer);
147 av_freep(&sl->top_borders[0]);
148 av_freep(&sl->top_borders[1]);
149
150 sl->bipred_scratchpad_allocated = 0;
151 sl->edge_emu_buffer_allocated = 0;
152 sl->top_borders_allocated[0] = 0;
153 sl->top_borders_allocated[1] = 0;
154 return AVERROR(ENOMEM);
155 }
156
157 return 0;
158 }
159
init_table_pools(H264Context * h)160 static int init_table_pools(H264Context *h)
161 {
162 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
163 const int mb_array_size = h->mb_stride * h->mb_height;
164 const int b4_stride = h->mb_width * 4 + 1;
165 const int b4_array_size = b4_stride * h->mb_height * 4;
166
167 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
168 av_buffer_allocz);
169 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
170 sizeof(uint32_t), av_buffer_allocz);
171 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
172 sizeof(int16_t), av_buffer_allocz);
173 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
174
175 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
176 !h->ref_index_pool) {
177 av_buffer_pool_uninit(&h->qscale_table_pool);
178 av_buffer_pool_uninit(&h->mb_type_pool);
179 av_buffer_pool_uninit(&h->motion_val_pool);
180 av_buffer_pool_uninit(&h->ref_index_pool);
181 return AVERROR(ENOMEM);
182 }
183
184 return 0;
185 }
186
alloc_picture(H264Context * h,H264Picture * pic)187 static int alloc_picture(H264Context *h, H264Picture *pic)
188 {
189 int i, ret = 0;
190
191 av_assert0(!pic->f->data[0]);
192
193 pic->tf.f = pic->f;
194 ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
195 AV_GET_BUFFER_FLAG_REF : 0);
196 if (ret < 0)
197 goto fail;
198
199 if (h->avctx->hwaccel) {
200 const AVHWAccel *hwaccel = h->avctx->hwaccel;
201 av_assert0(!pic->hwaccel_picture_private);
202 if (hwaccel->frame_priv_data_size) {
203 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
204 if (!pic->hwaccel_priv_buf)
205 return AVERROR(ENOMEM);
206 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
207 }
208 }
209 if (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) {
210 int h_chroma_shift, v_chroma_shift;
211 av_pix_fmt_get_chroma_sub_sample(pic->f->format,
212 &h_chroma_shift, &v_chroma_shift);
213
214 for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) {
215 memset(pic->f->data[1] + pic->f->linesize[1]*i,
216 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
217 memset(pic->f->data[2] + pic->f->linesize[2]*i,
218 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
219 }
220 }
221
222 if (!h->qscale_table_pool) {
223 ret = init_table_pools(h);
224 if (ret < 0)
225 goto fail;
226 }
227
228 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
229 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
230 if (!pic->qscale_table_buf || !pic->mb_type_buf)
231 goto fail;
232
233 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
234 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
235
236 for (i = 0; i < 2; i++) {
237 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
238 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
239 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
240 goto fail;
241
242 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
243 pic->ref_index[i] = pic->ref_index_buf[i]->data;
244 }
245
246 pic->pps_buf = av_buffer_ref(h->ps.pps_ref);
247 if (!pic->pps_buf)
248 goto fail;
249 pic->pps = (const PPS*)pic->pps_buf->data;
250
251 pic->mb_width = h->mb_width;
252 pic->mb_height = h->mb_height;
253 pic->mb_stride = h->mb_stride;
254
255 return 0;
256 fail:
257 ff_h264_unref_picture(h, pic);
258 return (ret < 0) ? ret : AVERROR(ENOMEM);
259 }
260
find_unused_picture(H264Context * h)261 static int find_unused_picture(H264Context *h)
262 {
263 int i;
264
265 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
266 if (!h->DPB[i].f->buf[0])
267 return i;
268 }
269 return AVERROR_INVALIDDATA;
270 }
271
272
273 #define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((b) + (size))))
274
275 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
276 (((pic) && (pic) >= (old_ctx)->DPB && \
277 (pic) < (old_ctx)->DPB + H264_MAX_PICTURE_COUNT) ? \
278 &(new_ctx)->DPB[(pic) - (old_ctx)->DPB] : NULL)
279
copy_picture_range(H264Picture ** to,H264Picture ** from,int count,H264Context * new_base,H264Context * old_base)280 static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
281 H264Context *new_base,
282 H264Context *old_base)
283 {
284 int i;
285
286 for (i = 0; i < count; i++) {
287 av_assert1(!from[i] ||
288 IN_RANGE(from[i], old_base, 1) ||
289 IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT));
290 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
291 }
292 }
293
294 static int h264_slice_header_init(H264Context *h);
295
ff_h264_update_thread_context(AVCodecContext * dst,const AVCodecContext * src)296 int ff_h264_update_thread_context(AVCodecContext *dst,
297 const AVCodecContext *src)
298 {
299 H264Context *h = dst->priv_data, *h1 = src->priv_data;
300 int inited = h->context_initialized, err = 0;
301 int need_reinit = 0;
302 int i, ret;
303
304 if (dst == src)
305 return 0;
306
307 if (inited && !h1->ps.sps)
308 return AVERROR_INVALIDDATA;
309
310 if (inited &&
311 (h->width != h1->width ||
312 h->height != h1->height ||
313 h->mb_width != h1->mb_width ||
314 h->mb_height != h1->mb_height ||
315 !h->ps.sps ||
316 h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
317 h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
318 h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
319 need_reinit = 1;
320 }
321
322 /* copy block_offset since frame_start may not be called */
323 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
324
325 // SPS/PPS
326 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
327 ret = av_buffer_replace(&h->ps.sps_list[i], h1->ps.sps_list[i]);
328 if (ret < 0)
329 return ret;
330 }
331 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
332 ret = av_buffer_replace(&h->ps.pps_list[i], h1->ps.pps_list[i]);
333 if (ret < 0)
334 return ret;
335 }
336
337 ret = av_buffer_replace(&h->ps.pps_ref, h1->ps.pps_ref);
338 if (ret < 0)
339 return ret;
340 h->ps.pps = NULL;
341 h->ps.sps = NULL;
342 if (h1->ps.pps_ref) {
343 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
344 h->ps.sps = h->ps.pps->sps;
345 }
346
347 if (need_reinit || !inited) {
348 h->width = h1->width;
349 h->height = h1->height;
350 h->mb_height = h1->mb_height;
351 h->mb_width = h1->mb_width;
352 h->mb_num = h1->mb_num;
353 h->mb_stride = h1->mb_stride;
354 h->b_stride = h1->b_stride;
355 h->x264_build = h1->x264_build;
356
357 if (h->context_initialized || h1->context_initialized) {
358 if ((err = h264_slice_header_init(h)) < 0) {
359 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
360 return err;
361 }
362 }
363
364 /* copy block_offset since frame_start may not be called */
365 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
366 }
367
368 h->avctx->coded_height = h1->avctx->coded_height;
369 h->avctx->coded_width = h1->avctx->coded_width;
370 h->avctx->width = h1->avctx->width;
371 h->avctx->height = h1->avctx->height;
372 h->width_from_caller = h1->width_from_caller;
373 h->height_from_caller = h1->height_from_caller;
374 h->coded_picture_number = h1->coded_picture_number;
375 h->first_field = h1->first_field;
376 h->picture_structure = h1->picture_structure;
377 h->mb_aff_frame = h1->mb_aff_frame;
378 h->droppable = h1->droppable;
379
380 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
381 ff_h264_unref_picture(h, &h->DPB[i]);
382 if (h1->DPB[i].f->buf[0] &&
383 (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
384 return ret;
385 }
386
387 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
388 ff_h264_unref_picture(h, &h->cur_pic);
389 if (h1->cur_pic.f->buf[0]) {
390 ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
391 if (ret < 0)
392 return ret;
393 }
394
395 h->enable_er = h1->enable_er;
396 h->workaround_bugs = h1->workaround_bugs;
397 h->droppable = h1->droppable;
398
399 // extradata/NAL handling
400 h->is_avc = h1->is_avc;
401 h->nal_length_size = h1->nal_length_size;
402
403 memcpy(&h->poc, &h1->poc, sizeof(h->poc));
404
405 memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
406 memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
407 memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
408 memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
409
410 h->next_output_pic = h1->next_output_pic;
411 h->next_outputed_poc = h1->next_outputed_poc;
412
413 memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
414 h->nb_mmco = h1->nb_mmco;
415 h->mmco_reset = h1->mmco_reset;
416 h->explicit_ref_marking = h1->explicit_ref_marking;
417 h->long_ref_count = h1->long_ref_count;
418 h->short_ref_count = h1->short_ref_count;
419
420 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
421 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
422 copy_picture_range(h->delayed_pic, h1->delayed_pic,
423 MAX_DELAYED_PIC_COUNT + 2, h, h1);
424
425 h->frame_recovered = h1->frame_recovered;
426
427 ret = av_buffer_replace(&h->sei.a53_caption.buf_ref, h1->sei.a53_caption.buf_ref);
428 if (ret < 0)
429 return ret;
430
431 for (i = 0; i < h->sei.unregistered.nb_buf_ref; i++)
432 av_buffer_unref(&h->sei.unregistered.buf_ref[i]);
433 h->sei.unregistered.nb_buf_ref = 0;
434
435 if (h1->sei.unregistered.nb_buf_ref) {
436 ret = av_reallocp_array(&h->sei.unregistered.buf_ref,
437 h1->sei.unregistered.nb_buf_ref,
438 sizeof(*h->sei.unregistered.buf_ref));
439 if (ret < 0)
440 return ret;
441
442 for (i = 0; i < h1->sei.unregistered.nb_buf_ref; i++) {
443 h->sei.unregistered.buf_ref[i] = av_buffer_ref(h1->sei.unregistered.buf_ref[i]);
444 if (!h->sei.unregistered.buf_ref[i])
445 return AVERROR(ENOMEM);
446 h->sei.unregistered.nb_buf_ref++;
447 }
448 }
449 h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build;
450
451 if (!h->cur_pic_ptr)
452 return 0;
453
454 if (!h->droppable) {
455 err = ff_h264_execute_ref_pic_marking(h);
456 h->poc.prev_poc_msb = h->poc.poc_msb;
457 h->poc.prev_poc_lsb = h->poc.poc_lsb;
458 }
459 h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
460 h->poc.prev_frame_num = h->poc.frame_num;
461
462 h->recovery_frame = h1->recovery_frame;
463
464 return err;
465 }
466
h264_frame_start(H264Context * h)467 static int h264_frame_start(H264Context *h)
468 {
469 H264Picture *pic;
470 int i, ret;
471 const int pixel_shift = h->pixel_shift;
472
473 if (!ff_thread_can_start_frame(h->avctx)) {
474 av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
475 return -1;
476 }
477
478 release_unused_pictures(h, 1);
479 h->cur_pic_ptr = NULL;
480
481 i = find_unused_picture(h);
482 if (i < 0) {
483 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
484 return i;
485 }
486 pic = &h->DPB[i];
487
488 pic->reference = h->droppable ? 0 : h->picture_structure;
489 pic->f->coded_picture_number = h->coded_picture_number++;
490 pic->field_picture = h->picture_structure != PICT_FRAME;
491 pic->frame_num = h->poc.frame_num;
492 /*
493 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
494 * in later.
495 * See decode_nal_units().
496 */
497 pic->f->key_frame = 0;
498 pic->mmco_reset = 0;
499 pic->recovered = 0;
500 pic->invalid_gap = 0;
501 pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
502
503 pic->f->pict_type = h->slice_ctx[0].slice_type;
504
505 pic->f->crop_left = h->crop_left;
506 pic->f->crop_right = h->crop_right;
507 pic->f->crop_top = h->crop_top;
508 pic->f->crop_bottom = h->crop_bottom;
509
510 if ((ret = alloc_picture(h, pic)) < 0)
511 return ret;
512
513 h->cur_pic_ptr = pic;
514 ff_h264_unref_picture(h, &h->cur_pic);
515 if (CONFIG_ERROR_RESILIENCE) {
516 ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
517 }
518
519 if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
520 return ret;
521
522 for (i = 0; i < h->nb_slice_ctx; i++) {
523 h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
524 h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
525 }
526
527 if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
528 ff_er_frame_start(&h->slice_ctx[0].er);
529 ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
530 ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
531 }
532
533 for (i = 0; i < 16; i++) {
534 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
535 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
536 }
537 for (i = 0; i < 16; i++) {
538 h->block_offset[16 + i] =
539 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
540 h->block_offset[48 + 16 + i] =
541 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
542 }
543
544 /* We mark the current picture as non-reference after allocating it, so
545 * that if we break out due to an error it can be released automatically
546 * in the next ff_mpv_frame_start().
547 */
548 h->cur_pic_ptr->reference = 0;
549
550 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
551
552 h->next_output_pic = NULL;
553
554 h->postpone_filter = 0;
555
556 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
557
558 if (h->sei.unregistered.x264_build >= 0)
559 h->x264_build = h->sei.unregistered.x264_build;
560
561 assert(h->cur_pic_ptr->long_ref == 0);
562
563 return 0;
564 }
565
backup_mb_border(const H264Context * h,H264SliceContext * sl,uint8_t * src_y,uint8_t * src_cb,uint8_t * src_cr,int linesize,int uvlinesize,int simple)566 static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
567 uint8_t *src_y,
568 uint8_t *src_cb, uint8_t *src_cr,
569 int linesize, int uvlinesize,
570 int simple)
571 {
572 uint8_t *top_border;
573 int top_idx = 1;
574 const int pixel_shift = h->pixel_shift;
575 int chroma444 = CHROMA444(h);
576 int chroma422 = CHROMA422(h);
577
578 src_y -= linesize;
579 src_cb -= uvlinesize;
580 src_cr -= uvlinesize;
581
582 if (!simple && FRAME_MBAFF(h)) {
583 if (sl->mb_y & 1) {
584 if (!MB_MBAFF(sl)) {
585 top_border = sl->top_borders[0][sl->mb_x];
586 AV_COPY128(top_border, src_y + 15 * linesize);
587 if (pixel_shift)
588 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
589 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
590 if (chroma444) {
591 if (pixel_shift) {
592 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
593 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
594 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
595 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
596 } else {
597 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
598 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
599 }
600 } else if (chroma422) {
601 if (pixel_shift) {
602 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
603 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
604 } else {
605 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
606 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
607 }
608 } else {
609 if (pixel_shift) {
610 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
611 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
612 } else {
613 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
614 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
615 }
616 }
617 }
618 }
619 } else if (MB_MBAFF(sl)) {
620 top_idx = 0;
621 } else
622 return;
623 }
624
625 top_border = sl->top_borders[top_idx][sl->mb_x];
626 /* There are two lines saved, the line above the top macroblock
627 * of a pair, and the line above the bottom macroblock. */
628 AV_COPY128(top_border, src_y + 16 * linesize);
629 if (pixel_shift)
630 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
631
632 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
633 if (chroma444) {
634 if (pixel_shift) {
635 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
636 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
637 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
638 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
639 } else {
640 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
641 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
642 }
643 } else if (chroma422) {
644 if (pixel_shift) {
645 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
646 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
647 } else {
648 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
649 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
650 }
651 } else {
652 if (pixel_shift) {
653 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
654 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
655 } else {
656 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
657 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
658 }
659 }
660 }
661 }
662
663 /**
664 * Initialize implicit_weight table.
665 * @param field 0/1 initialize the weight for interlaced MBAFF
666 * -1 initializes the rest
667 */
implicit_weight_table(const H264Context * h,H264SliceContext * sl,int field)668 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
669 {
670 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
671
672 for (i = 0; i < 2; i++) {
673 sl->pwt.luma_weight_flag[i] = 0;
674 sl->pwt.chroma_weight_flag[i] = 0;
675 }
676
677 if (field < 0) {
678 if (h->picture_structure == PICT_FRAME) {
679 cur_poc = h->cur_pic_ptr->poc;
680 } else {
681 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
682 }
683 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
684 sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2LL * cur_poc) {
685 sl->pwt.use_weight = 0;
686 sl->pwt.use_weight_chroma = 0;
687 return;
688 }
689 ref_start = 0;
690 ref_count0 = sl->ref_count[0];
691 ref_count1 = sl->ref_count[1];
692 } else {
693 cur_poc = h->cur_pic_ptr->field_poc[field];
694 ref_start = 16;
695 ref_count0 = 16 + 2 * sl->ref_count[0];
696 ref_count1 = 16 + 2 * sl->ref_count[1];
697 }
698
699 sl->pwt.use_weight = 2;
700 sl->pwt.use_weight_chroma = 2;
701 sl->pwt.luma_log2_weight_denom = 5;
702 sl->pwt.chroma_log2_weight_denom = 5;
703
704 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
705 int64_t poc0 = sl->ref_list[0][ref0].poc;
706 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
707 int w = 32;
708 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
709 int poc1 = sl->ref_list[1][ref1].poc;
710 int td = av_clip_int8(poc1 - poc0);
711 if (td) {
712 int tb = av_clip_int8(cur_poc - poc0);
713 int tx = (16384 + (FFABS(td) >> 1)) / td;
714 int dist_scale_factor = (tb * tx + 32) >> 8;
715 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
716 w = 64 - dist_scale_factor;
717 }
718 }
719 if (field < 0) {
720 sl->pwt.implicit_weight[ref0][ref1][0] =
721 sl->pwt.implicit_weight[ref0][ref1][1] = w;
722 } else {
723 sl->pwt.implicit_weight[ref0][ref1][field] = w;
724 }
725 }
726 }
727 }
728
729 /**
730 * initialize scan tables
731 */
init_scan_tables(H264Context * h)732 static void init_scan_tables(H264Context *h)
733 {
734 int i;
735 for (i = 0; i < 16; i++) {
736 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
737 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
738 h->field_scan[i] = TRANSPOSE(field_scan[i]);
739 #undef TRANSPOSE
740 }
741 for (i = 0; i < 64; i++) {
742 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
743 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
744 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
745 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
746 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
747 #undef TRANSPOSE
748 }
749 if (h->ps.sps->transform_bypass) { // FIXME same ugly
750 memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
751 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
752 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
753 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
754 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
755 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
756 } else {
757 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
758 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
759 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
760 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
761 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
762 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
763 }
764 }
765
get_pixel_format(H264Context * h,int force_callback)766 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
767 {
768 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
769 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
770 CONFIG_H264_NVDEC_HWACCEL + \
771 CONFIG_H264_VAAPI_HWACCEL + \
772 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
773 CONFIG_H264_VDPAU_HWACCEL)
774 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
775 const enum AVPixelFormat *choices = pix_fmts;
776 int i;
777
778 switch (h->ps.sps->bit_depth_luma) {
779 case 9:
780 if (CHROMA444(h)) {
781 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
782 *fmt++ = AV_PIX_FMT_GBRP9;
783 } else
784 *fmt++ = AV_PIX_FMT_YUV444P9;
785 } else if (CHROMA422(h))
786 *fmt++ = AV_PIX_FMT_YUV422P9;
787 else
788 *fmt++ = AV_PIX_FMT_YUV420P9;
789 break;
790 case 10:
791 if (CHROMA444(h)) {
792 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
793 *fmt++ = AV_PIX_FMT_GBRP10;
794 } else
795 *fmt++ = AV_PIX_FMT_YUV444P10;
796 } else if (CHROMA422(h))
797 *fmt++ = AV_PIX_FMT_YUV422P10;
798 else
799 *fmt++ = AV_PIX_FMT_YUV420P10;
800 break;
801 case 12:
802 if (CHROMA444(h)) {
803 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
804 *fmt++ = AV_PIX_FMT_GBRP12;
805 } else
806 *fmt++ = AV_PIX_FMT_YUV444P12;
807 } else if (CHROMA422(h))
808 *fmt++ = AV_PIX_FMT_YUV422P12;
809 else
810 *fmt++ = AV_PIX_FMT_YUV420P12;
811 break;
812 case 14:
813 if (CHROMA444(h)) {
814 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
815 *fmt++ = AV_PIX_FMT_GBRP14;
816 } else
817 *fmt++ = AV_PIX_FMT_YUV444P14;
818 } else if (CHROMA422(h))
819 *fmt++ = AV_PIX_FMT_YUV422P14;
820 else
821 *fmt++ = AV_PIX_FMT_YUV420P14;
822 break;
823 case 8:
824 #if CONFIG_H264_VDPAU_HWACCEL
825 *fmt++ = AV_PIX_FMT_VDPAU;
826 #endif
827 #if CONFIG_H264_NVDEC_HWACCEL
828 *fmt++ = AV_PIX_FMT_CUDA;
829 #endif
830 if (CHROMA444(h)) {
831 if (h->avctx->colorspace == AVCOL_SPC_RGB)
832 *fmt++ = AV_PIX_FMT_GBRP;
833 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
834 *fmt++ = AV_PIX_FMT_YUVJ444P;
835 else
836 *fmt++ = AV_PIX_FMT_YUV444P;
837 } else if (CHROMA422(h)) {
838 if (h->avctx->color_range == AVCOL_RANGE_JPEG)
839 *fmt++ = AV_PIX_FMT_YUVJ422P;
840 else
841 *fmt++ = AV_PIX_FMT_YUV422P;
842 } else {
843 #if CONFIG_H264_DXVA2_HWACCEL
844 *fmt++ = AV_PIX_FMT_DXVA2_VLD;
845 #endif
846 #if CONFIG_H264_D3D11VA_HWACCEL
847 *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
848 *fmt++ = AV_PIX_FMT_D3D11;
849 #endif
850 #if CONFIG_H264_VAAPI_HWACCEL
851 *fmt++ = AV_PIX_FMT_VAAPI;
852 #endif
853 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
854 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
855 #endif
856 if (h->avctx->codec->pix_fmts)
857 choices = h->avctx->codec->pix_fmts;
858 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
859 *fmt++ = AV_PIX_FMT_YUVJ420P;
860 else
861 *fmt++ = AV_PIX_FMT_YUV420P;
862 }
863 break;
864 default:
865 av_log(h->avctx, AV_LOG_ERROR,
866 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
867 return AVERROR_INVALIDDATA;
868 }
869
870 *fmt = AV_PIX_FMT_NONE;
871
872 for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
873 if (choices[i] == h->avctx->pix_fmt && !force_callback)
874 return choices[i];
875 return ff_thread_get_format(h->avctx, choices);
876 }
877
878 /* export coded and cropped frame dimensions to AVCodecContext */
init_dimensions(H264Context * h)879 static void init_dimensions(H264Context *h)
880 {
881 const SPS *sps = (const SPS*)h->ps.sps;
882 int cr = sps->crop_right;
883 int cl = sps->crop_left;
884 int ct = sps->crop_top;
885 int cb = sps->crop_bottom;
886 int width = h->width - (cr + cl);
887 int height = h->height - (ct + cb);
888 av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
889 av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
890
891 /* handle container cropping */
892 if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
893 !sps->crop_top && !sps->crop_left &&
894 FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
895 FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
896 h->width_from_caller <= width &&
897 h->height_from_caller <= height) {
898 width = h->width_from_caller;
899 height = h->height_from_caller;
900 cl = 0;
901 ct = 0;
902 cr = h->width - width;
903 cb = h->height - height;
904 } else {
905 h->width_from_caller = 0;
906 h->height_from_caller = 0;
907 }
908
909 h->avctx->coded_width = h->width;
910 h->avctx->coded_height = h->height;
911 h->avctx->width = width;
912 h->avctx->height = height;
913 h->crop_right = cr;
914 h->crop_left = cl;
915 h->crop_top = ct;
916 h->crop_bottom = cb;
917 }
918
h264_slice_header_init(H264Context * h)919 static int h264_slice_header_init(H264Context *h)
920 {
921 const SPS *sps = h->ps.sps;
922 int i, ret;
923
924 if (!sps) {
925 ret = AVERROR_INVALIDDATA;
926 goto fail;
927 }
928
929 ff_set_sar(h->avctx, sps->sar);
930 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
931 &h->chroma_x_shift, &h->chroma_y_shift);
932
933 if (sps->timing_info_present_flag) {
934 int64_t den = sps->time_scale;
935 if (h->x264_build < 44U)
936 den *= 2;
937 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
938 sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
939 }
940
941 ff_h264_free_tables(h);
942
943 h->first_field = 0;
944 h->prev_interlaced_frame = 1;
945
946 init_scan_tables(h);
947 ret = ff_h264_alloc_tables(h);
948 if (ret < 0) {
949 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
950 goto fail;
951 }
952
953 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
954 sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
955 ) {
956 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
957 sps->bit_depth_luma);
958 ret = AVERROR_INVALIDDATA;
959 goto fail;
960 }
961
962 h->cur_bit_depth_luma =
963 h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
964 h->cur_chroma_format_idc = sps->chroma_format_idc;
965 h->pixel_shift = sps->bit_depth_luma > 8;
966 h->chroma_format_idc = sps->chroma_format_idc;
967 h->bit_depth_luma = sps->bit_depth_luma;
968
969 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
970 sps->chroma_format_idc);
971 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
972 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
973 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
974 sps->chroma_format_idc);
975 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
976
977 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
978 ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
979 if (ret < 0) {
980 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
981 goto fail;
982 }
983 } else {
984 for (i = 0; i < h->nb_slice_ctx; i++) {
985 H264SliceContext *sl = &h->slice_ctx[i];
986
987 sl->h264 = h;
988 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
989 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
990 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
991
992 if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
993 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
994 goto fail;
995 }
996 }
997 }
998
999 h->context_initialized = 1;
1000
1001 return 0;
1002 fail:
1003 ff_h264_free_tables(h);
1004 h->context_initialized = 0;
1005 return ret;
1006 }
1007
non_j_pixfmt(enum AVPixelFormat a)1008 static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
1009 {
1010 switch (a) {
1011 case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P;
1012 case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P;
1013 case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P;
1014 default:
1015 return a;
1016 }
1017 }
1018
h264_init_ps(H264Context * h,const H264SliceContext * sl,int first_slice)1019 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1020 {
1021 const SPS *sps;
1022 int needs_reinit = 0, must_reinit, ret;
1023
1024 if (first_slice) {
1025 av_buffer_unref(&h->ps.pps_ref);
1026 h->ps.pps = NULL;
1027 h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1028 if (!h->ps.pps_ref)
1029 return AVERROR(ENOMEM);
1030 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1031 }
1032
1033 if (h->ps.sps != h->ps.pps->sps) {
1034 h->ps.sps = (const SPS*)h->ps.pps->sps;
1035
1036 if (h->mb_width != h->ps.sps->mb_width ||
1037 h->mb_height != h->ps.sps->mb_height ||
1038 h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
1039 h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
1040 )
1041 needs_reinit = 1;
1042
1043 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1044 h->chroma_format_idc != h->ps.sps->chroma_format_idc)
1045 needs_reinit = 1;
1046 }
1047 sps = h->ps.sps;
1048
1049 must_reinit = (h->context_initialized &&
1050 ( 16*sps->mb_width != h->avctx->coded_width
1051 || 16*sps->mb_height != h->avctx->coded_height
1052 || h->cur_bit_depth_luma != sps->bit_depth_luma
1053 || h->cur_chroma_format_idc != sps->chroma_format_idc
1054 || h->mb_width != sps->mb_width
1055 || h->mb_height != sps->mb_height
1056 ));
1057 if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1058 || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
1059 must_reinit = 1;
1060
1061 if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1062 must_reinit = 1;
1063
1064 if (!h->setup_finished) {
1065 h->avctx->profile = ff_h264_get_profile(sps);
1066 h->avctx->level = sps->level_idc;
1067 h->avctx->refs = sps->ref_frame_count;
1068
1069 h->mb_width = sps->mb_width;
1070 h->mb_height = sps->mb_height;
1071 h->mb_num = h->mb_width * h->mb_height;
1072 h->mb_stride = h->mb_width + 1;
1073
1074 h->b_stride = h->mb_width * 4;
1075
1076 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1077
1078 h->width = 16 * h->mb_width;
1079 h->height = 16 * h->mb_height;
1080
1081 init_dimensions(h);
1082
1083 if (sps->video_signal_type_present_flag) {
1084 h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1085 : AVCOL_RANGE_MPEG;
1086 if (sps->colour_description_present_flag) {
1087 if (h->avctx->colorspace != sps->colorspace)
1088 needs_reinit = 1;
1089 h->avctx->color_primaries = sps->color_primaries;
1090 h->avctx->color_trc = sps->color_trc;
1091 h->avctx->colorspace = sps->colorspace;
1092 }
1093 }
1094
1095 if (h->sei.alternative_transfer.present &&
1096 av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) &&
1097 h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) {
1098 h->avctx->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics;
1099 }
1100 }
1101 h->avctx->chroma_sample_location = sps->chroma_location;
1102
1103 if (!h->context_initialized || must_reinit || needs_reinit) {
1104 int flush_changes = h->context_initialized;
1105 h->context_initialized = 0;
1106 if (sl != h->slice_ctx) {
1107 av_log(h->avctx, AV_LOG_ERROR,
1108 "changing width %d -> %d / height %d -> %d on "
1109 "slice %d\n",
1110 h->width, h->avctx->coded_width,
1111 h->height, h->avctx->coded_height,
1112 h->current_slice + 1);
1113 return AVERROR_INVALIDDATA;
1114 }
1115
1116 av_assert1(first_slice);
1117
1118 if (flush_changes)
1119 ff_h264_flush_change(h);
1120
1121 if ((ret = get_pixel_format(h, 1)) < 0)
1122 return ret;
1123 h->avctx->pix_fmt = ret;
1124
1125 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1126 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1127
1128 if ((ret = h264_slice_header_init(h)) < 0) {
1129 av_log(h->avctx, AV_LOG_ERROR,
1130 "h264_slice_header_init() failed\n");
1131 return ret;
1132 }
1133 }
1134
1135 return 0;
1136 }
1137
h264_export_frame_props(H264Context * h)1138 static int h264_export_frame_props(H264Context *h)
1139 {
1140 const SPS *sps = h->ps.sps;
1141 H264Picture *cur = h->cur_pic_ptr;
1142 AVFrame *out = cur->f;
1143
1144 out->interlaced_frame = 0;
1145 out->repeat_pict = 0;
1146
1147 /* Signal interlacing information externally. */
1148 /* Prioritize picture timing SEI information over used
1149 * decoding process if it exists. */
1150 if (h->sei.picture_timing.present) {
1151 int ret = ff_h264_sei_process_picture_timing(&h->sei.picture_timing, sps,
1152 h->avctx);
1153 if (ret < 0) {
1154 av_log(h->avctx, AV_LOG_ERROR, "Error processing a picture timing SEI\n");
1155 if (h->avctx->err_recognition & AV_EF_EXPLODE)
1156 return ret;
1157 h->sei.picture_timing.present = 0;
1158 }
1159 }
1160
1161 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1162 H264SEIPictureTiming *pt = &h->sei.picture_timing;
1163 switch (pt->pic_struct) {
1164 case H264_SEI_PIC_STRUCT_FRAME:
1165 break;
1166 case H264_SEI_PIC_STRUCT_TOP_FIELD:
1167 case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
1168 out->interlaced_frame = 1;
1169 break;
1170 case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
1171 case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
1172 if (FIELD_OR_MBAFF_PICTURE(h))
1173 out->interlaced_frame = 1;
1174 else
1175 // try to flag soft telecine progressive
1176 out->interlaced_frame = h->prev_interlaced_frame;
1177 break;
1178 case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1179 case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1180 /* Signal the possibility of telecined film externally
1181 * (pic_struct 5,6). From these hints, let the applications
1182 * decide if they apply deinterlacing. */
1183 out->repeat_pict = 1;
1184 break;
1185 case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
1186 out->repeat_pict = 2;
1187 break;
1188 case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
1189 out->repeat_pict = 4;
1190 break;
1191 }
1192
1193 if ((pt->ct_type & 3) &&
1194 pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
1195 out->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1196 } else {
1197 /* Derive interlacing flag from used decoding process. */
1198 out->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1199 }
1200 h->prev_interlaced_frame = out->interlaced_frame;
1201
1202 if (cur->field_poc[0] != cur->field_poc[1]) {
1203 /* Derive top_field_first from field pocs. */
1204 out->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1205 } else {
1206 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1207 /* Use picture timing SEI information. Even if it is a
1208 * information of a past frame, better than nothing. */
1209 if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
1210 h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1211 out->top_field_first = 1;
1212 else
1213 out->top_field_first = 0;
1214 } else if (out->interlaced_frame) {
1215 /* Default to top field first when pic_struct_present_flag
1216 * is not set but interlaced frame detected */
1217 out->top_field_first = 1;
1218 } else {
1219 /* Most likely progressive */
1220 out->top_field_first = 0;
1221 }
1222 }
1223
1224 if (h->sei.frame_packing.present &&
1225 h->sei.frame_packing.arrangement_type <= 6 &&
1226 h->sei.frame_packing.content_interpretation_type > 0 &&
1227 h->sei.frame_packing.content_interpretation_type < 3) {
1228 H264SEIFramePacking *fp = &h->sei.frame_packing;
1229 AVStereo3D *stereo = av_stereo3d_create_side_data(out);
1230 if (stereo) {
1231 switch (fp->arrangement_type) {
1232 case H264_SEI_FPA_TYPE_CHECKERBOARD:
1233 stereo->type = AV_STEREO3D_CHECKERBOARD;
1234 break;
1235 case H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN:
1236 stereo->type = AV_STEREO3D_COLUMNS;
1237 break;
1238 case H264_SEI_FPA_TYPE_INTERLEAVE_ROW:
1239 stereo->type = AV_STEREO3D_LINES;
1240 break;
1241 case H264_SEI_FPA_TYPE_SIDE_BY_SIDE:
1242 if (fp->quincunx_sampling_flag)
1243 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1244 else
1245 stereo->type = AV_STEREO3D_SIDEBYSIDE;
1246 break;
1247 case H264_SEI_FPA_TYPE_TOP_BOTTOM:
1248 stereo->type = AV_STEREO3D_TOPBOTTOM;
1249 break;
1250 case H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL:
1251 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1252 break;
1253 case H264_SEI_FPA_TYPE_2D:
1254 stereo->type = AV_STEREO3D_2D;
1255 break;
1256 }
1257
1258 if (fp->content_interpretation_type == 2)
1259 stereo->flags = AV_STEREO3D_FLAG_INVERT;
1260
1261 if (fp->arrangement_type == H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) {
1262 if (fp->current_frame_is_frame0_flag)
1263 stereo->view = AV_STEREO3D_VIEW_LEFT;
1264 else
1265 stereo->view = AV_STEREO3D_VIEW_RIGHT;
1266 }
1267 }
1268 }
1269
1270 if (h->sei.display_orientation.present &&
1271 (h->sei.display_orientation.anticlockwise_rotation ||
1272 h->sei.display_orientation.hflip ||
1273 h->sei.display_orientation.vflip)) {
1274 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1275 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1276 AVFrameSideData *rotation = av_frame_new_side_data(out,
1277 AV_FRAME_DATA_DISPLAYMATRIX,
1278 sizeof(int32_t) * 9);
1279 if (rotation) {
1280 av_display_rotation_set((int32_t *)rotation->data, angle);
1281 av_display_matrix_flip((int32_t *)rotation->data,
1282 o->hflip, o->vflip);
1283 }
1284 }
1285
1286 if (h->sei.afd.present) {
1287 AVFrameSideData *sd = av_frame_new_side_data(out, AV_FRAME_DATA_AFD,
1288 sizeof(uint8_t));
1289
1290 if (sd) {
1291 *sd->data = h->sei.afd.active_format_description;
1292 h->sei.afd.present = 0;
1293 }
1294 }
1295
1296 if (h->sei.a53_caption.buf_ref) {
1297 H264SEIA53Caption *a53 = &h->sei.a53_caption;
1298
1299 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out, AV_FRAME_DATA_A53_CC, a53->buf_ref);
1300 if (!sd)
1301 av_buffer_unref(&a53->buf_ref);
1302 a53->buf_ref = NULL;
1303
1304 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
1305 }
1306
1307 for (int i = 0; i < h->sei.unregistered.nb_buf_ref; i++) {
1308 H264SEIUnregistered *unreg = &h->sei.unregistered;
1309
1310 if (unreg->buf_ref[i]) {
1311 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out,
1312 AV_FRAME_DATA_SEI_UNREGISTERED,
1313 unreg->buf_ref[i]);
1314 if (!sd)
1315 av_buffer_unref(&unreg->buf_ref[i]);
1316 unreg->buf_ref[i] = NULL;
1317 }
1318 }
1319 h->sei.unregistered.nb_buf_ref = 0;
1320
1321 if (h->sei.picture_timing.timecode_cnt > 0) {
1322 uint32_t *tc_sd;
1323 char tcbuf[AV_TIMECODE_STR_SIZE];
1324
1325 AVFrameSideData *tcside = av_frame_new_side_data(out,
1326 AV_FRAME_DATA_S12M_TIMECODE,
1327 sizeof(uint32_t)*4);
1328 if (!tcside)
1329 return AVERROR(ENOMEM);
1330
1331 tc_sd = (uint32_t*)tcside->data;
1332 tc_sd[0] = h->sei.picture_timing.timecode_cnt;
1333
1334 for (int i = 0; i < tc_sd[0]; i++) {
1335 int drop = h->sei.picture_timing.timecode[i].dropframe;
1336 int hh = h->sei.picture_timing.timecode[i].hours;
1337 int mm = h->sei.picture_timing.timecode[i].minutes;
1338 int ss = h->sei.picture_timing.timecode[i].seconds;
1339 int ff = h->sei.picture_timing.timecode[i].frame;
1340
1341 tc_sd[i + 1] = av_timecode_get_smpte(h->avctx->framerate, drop, hh, mm, ss, ff);
1342 av_timecode_make_smpte_tc_string2(tcbuf, h->avctx->framerate, tc_sd[i + 1], 0, 0);
1343 av_dict_set(&out->metadata, "timecode", tcbuf, 0);
1344 }
1345 h->sei.picture_timing.timecode_cnt = 0;
1346 }
1347
1348 return 0;
1349 }
1350
h264_select_output_frame(H264Context * h)1351 static int h264_select_output_frame(H264Context *h)
1352 {
1353 const SPS *sps = h->ps.sps;
1354 H264Picture *out = h->cur_pic_ptr;
1355 H264Picture *cur = h->cur_pic_ptr;
1356 int i, pics, out_of_order, out_idx;
1357
1358 cur->mmco_reset = h->mmco_reset;
1359 h->mmco_reset = 0;
1360
1361 if (sps->bitstream_restriction_flag ||
1362 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
1363 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
1364 }
1365
1366 for (i = 0; 1; i++) {
1367 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1368 if(i)
1369 h->last_pocs[i-1] = cur->poc;
1370 break;
1371 } else if(i) {
1372 h->last_pocs[i-1]= h->last_pocs[i];
1373 }
1374 }
1375 out_of_order = MAX_DELAYED_PIC_COUNT - i;
1376 if( cur->f->pict_type == AV_PICTURE_TYPE_B
1377 || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - (int64_t)h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
1378 out_of_order = FFMAX(out_of_order, 1);
1379 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1380 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1381 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1382 h->last_pocs[i] = INT_MIN;
1383 h->last_pocs[0] = cur->poc;
1384 cur->mmco_reset = 1;
1385 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1386 int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1387 av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1388 h->avctx->has_b_frames = out_of_order;
1389 }
1390
1391 pics = 0;
1392 while (h->delayed_pic[pics])
1393 pics++;
1394
1395 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1396
1397 h->delayed_pic[pics++] = cur;
1398 if (cur->reference == 0)
1399 cur->reference = DELAYED_PIC_REF;
1400
1401 out = h->delayed_pic[0];
1402 out_idx = 0;
1403 for (i = 1; h->delayed_pic[i] &&
1404 !h->delayed_pic[i]->f->key_frame &&
1405 !h->delayed_pic[i]->mmco_reset;
1406 i++)
1407 if (h->delayed_pic[i]->poc < out->poc) {
1408 out = h->delayed_pic[i];
1409 out_idx = i;
1410 }
1411 if (h->avctx->has_b_frames == 0 &&
1412 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1413 h->next_outputed_poc = INT_MIN;
1414 out_of_order = out->poc < h->next_outputed_poc;
1415
1416 if (out_of_order || pics > h->avctx->has_b_frames) {
1417 out->reference &= ~DELAYED_PIC_REF;
1418 for (i = out_idx; h->delayed_pic[i]; i++)
1419 h->delayed_pic[i] = h->delayed_pic[i + 1];
1420 }
1421 if (!out_of_order && pics > h->avctx->has_b_frames) {
1422 h->next_output_pic = out;
1423 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1424 h->next_outputed_poc = INT_MIN;
1425 } else
1426 h->next_outputed_poc = out->poc;
1427
1428 if (out->recovered) {
1429 // We have reached an recovery point and all frames after it in
1430 // display order are "recovered".
1431 h->frame_recovered |= FRAME_RECOVERED_SEI;
1432 }
1433 out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
1434
1435 if (!out->recovered) {
1436 if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1437 !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) {
1438 h->next_output_pic = NULL;
1439 } else {
1440 out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1441 }
1442 }
1443 } else {
1444 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1445 }
1446
1447 return 0;
1448 }
1449
1450 /* This function is called right after decoding the slice header for a first
1451 * slice in a field (or a frame). It decides whether we are decoding a new frame
1452 * or a second field in a pair and does the necessary setup.
1453 */
h264_field_start(H264Context * h,const H264SliceContext * sl,const H2645NAL * nal,int first_slice)1454 static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1455 const H2645NAL *nal, int first_slice)
1456 {
1457 int i;
1458 const SPS *sps;
1459
1460 int last_pic_structure, last_pic_droppable, ret;
1461
1462 ret = h264_init_ps(h, sl, first_slice);
1463 if (ret < 0)
1464 return ret;
1465
1466 sps = h->ps.sps;
1467
1468 if (sps && sps->bitstream_restriction_flag &&
1469 h->avctx->has_b_frames < sps->num_reorder_frames) {
1470 h->avctx->has_b_frames = sps->num_reorder_frames;
1471 }
1472
1473 last_pic_droppable = h->droppable;
1474 last_pic_structure = h->picture_structure;
1475 h->droppable = (nal->ref_idc == 0);
1476 h->picture_structure = sl->picture_structure;
1477
1478 h->poc.frame_num = sl->frame_num;
1479 h->poc.poc_lsb = sl->poc_lsb;
1480 h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1481 h->poc.delta_poc[0] = sl->delta_poc[0];
1482 h->poc.delta_poc[1] = sl->delta_poc[1];
1483
1484 /* Shorten frame num gaps so we don't have to allocate reference
1485 * frames just to throw them away */
1486 if (h->poc.frame_num != h->poc.prev_frame_num) {
1487 int unwrap_prev_frame_num = h->poc.prev_frame_num;
1488 int max_frame_num = 1 << sps->log2_max_frame_num;
1489
1490 if (unwrap_prev_frame_num > h->poc.frame_num)
1491 unwrap_prev_frame_num -= max_frame_num;
1492
1493 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1494 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1495 if (unwrap_prev_frame_num < 0)
1496 unwrap_prev_frame_num += max_frame_num;
1497
1498 h->poc.prev_frame_num = unwrap_prev_frame_num;
1499 }
1500 }
1501
1502 /* See if we have a decoded first field looking for a pair...
1503 * Here, we're using that to see if we should mark previously
1504 * decode frames as "finished".
1505 * We have to do that before the "dummy" in-between frame allocation,
1506 * since that can modify h->cur_pic_ptr. */
1507 if (h->first_field) {
1508 int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1509 av_assert0(h->cur_pic_ptr);
1510 av_assert0(h->cur_pic_ptr->f->buf[0]);
1511 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1512
1513 /* Mark old field/frame as completed */
1514 if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1515 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1516 }
1517
1518 /* figure out if we have a complementary field pair */
1519 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1520 /* Previous field is unmatched. Don't display it, but let it
1521 * remain for reference if marked as such. */
1522 if (last_pic_structure != PICT_FRAME) {
1523 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1524 last_pic_structure == PICT_TOP_FIELD);
1525 }
1526 } else {
1527 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1528 /* This and previous field were reference, but had
1529 * different frame_nums. Consider this field first in
1530 * pair. Throw away previous field except for reference
1531 * purposes. */
1532 if (last_pic_structure != PICT_FRAME) {
1533 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1534 last_pic_structure == PICT_TOP_FIELD);
1535 }
1536 } else {
1537 /* Second field in complementary pair */
1538 if (!((last_pic_structure == PICT_TOP_FIELD &&
1539 h->picture_structure == PICT_BOTTOM_FIELD) ||
1540 (last_pic_structure == PICT_BOTTOM_FIELD &&
1541 h->picture_structure == PICT_TOP_FIELD))) {
1542 av_log(h->avctx, AV_LOG_ERROR,
1543 "Invalid field mode combination %d/%d\n",
1544 last_pic_structure, h->picture_structure);
1545 h->picture_structure = last_pic_structure;
1546 h->droppable = last_pic_droppable;
1547 return AVERROR_INVALIDDATA;
1548 } else if (last_pic_droppable != h->droppable) {
1549 avpriv_request_sample(h->avctx,
1550 "Found reference and non-reference fields in the same frame, which");
1551 h->picture_structure = last_pic_structure;
1552 h->droppable = last_pic_droppable;
1553 return AVERROR_PATCHWELCOME;
1554 }
1555 }
1556 }
1557 }
1558
1559 while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1560 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1561 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1562 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1563 h->poc.frame_num, h->poc.prev_frame_num);
1564 if (!sps->gaps_in_frame_num_allowed_flag)
1565 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1566 h->last_pocs[i] = INT_MIN;
1567 ret = h264_frame_start(h);
1568 if (ret < 0) {
1569 h->first_field = 0;
1570 return ret;
1571 }
1572
1573 h->poc.prev_frame_num++;
1574 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1575 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1576 h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag;
1577 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1578 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1579
1580 h->explicit_ref_marking = 0;
1581 ret = ff_h264_execute_ref_pic_marking(h);
1582 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1583 return ret;
1584 /* Error concealment: If a ref is missing, copy the previous ref
1585 * in its place.
1586 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1587 * many assumptions about there being no actual duplicates.
1588 * FIXME: This does not copy padding for out-of-frame motion
1589 * vectors. Given we are concealing a lost frame, this probably
1590 * is not noticeable by comparison, but it should be fixed. */
1591 if (h->short_ref_count) {
1592 int c[4] = {
1593 1<<(h->ps.sps->bit_depth_luma-1),
1594 1<<(h->ps.sps->bit_depth_chroma-1),
1595 1<<(h->ps.sps->bit_depth_chroma-1),
1596 -1
1597 };
1598
1599 if (prev &&
1600 h->short_ref[0]->f->width == prev->f->width &&
1601 h->short_ref[0]->f->height == prev->f->height &&
1602 h->short_ref[0]->f->format == prev->f->format) {
1603 ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1604 if (prev->field_picture)
1605 ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1606 ff_thread_release_buffer(h->avctx, &h->short_ref[0]->tf);
1607 h->short_ref[0]->tf.f = h->short_ref[0]->f;
1608 ret = ff_thread_ref_frame(&h->short_ref[0]->tf, &prev->tf);
1609 if (ret < 0)
1610 return ret;
1611 h->short_ref[0]->poc = prev->poc + 2U;
1612 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 0);
1613 if (h->short_ref[0]->field_picture)
1614 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 1);
1615 } else if (!h->frame_recovered && !h->avctx->hwaccel)
1616 ff_color_frame(h->short_ref[0]->f, c);
1617 h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1618 }
1619 }
1620
1621 /* See if we have a decoded first field looking for a pair...
1622 * We're using that to see whether to continue decoding in that
1623 * frame, or to allocate a new one. */
1624 if (h->first_field) {
1625 av_assert0(h->cur_pic_ptr);
1626 av_assert0(h->cur_pic_ptr->f->buf[0]);
1627 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1628
1629 /* figure out if we have a complementary field pair */
1630 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1631 /* Previous field is unmatched. Don't display it, but let it
1632 * remain for reference if marked as such. */
1633 h->missing_fields ++;
1634 h->cur_pic_ptr = NULL;
1635 h->first_field = FIELD_PICTURE(h);
1636 } else {
1637 h->missing_fields = 0;
1638 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1639 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1640 h->picture_structure==PICT_BOTTOM_FIELD);
1641 /* This and the previous field had different frame_nums.
1642 * Consider this field first in pair. Throw away previous
1643 * one except for reference purposes. */
1644 h->first_field = 1;
1645 h->cur_pic_ptr = NULL;
1646 } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) {
1647 /* This frame was already output, we cannot draw into it
1648 * anymore.
1649 */
1650 h->first_field = 1;
1651 h->cur_pic_ptr = NULL;
1652 } else {
1653 /* Second field in complementary pair */
1654 h->first_field = 0;
1655 }
1656 }
1657 } else {
1658 /* Frame or first field in a potentially complementary pair */
1659 h->first_field = FIELD_PICTURE(h);
1660 }
1661
1662 if (!FIELD_PICTURE(h) || h->first_field) {
1663 if (h264_frame_start(h) < 0) {
1664 h->first_field = 0;
1665 return AVERROR_INVALIDDATA;
1666 }
1667 } else {
1668 int field = h->picture_structure == PICT_BOTTOM_FIELD;
1669 release_unused_pictures(h, 0);
1670 h->cur_pic_ptr->tf.owner[field] = h->avctx;
1671 }
1672 /* Some macroblocks can be accessed before they're available in case
1673 * of lost slices, MBAFF or threading. */
1674 if (FIELD_PICTURE(h)) {
1675 for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
1676 memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
1677 } else {
1678 memset(h->slice_table, -1,
1679 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
1680 }
1681
1682 ret = ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
1683 h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1684 if (ret < 0)
1685 return ret;
1686
1687 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1688 h->nb_mmco = sl->nb_mmco;
1689 h->explicit_ref_marking = sl->explicit_ref_marking;
1690
1691 h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1692
1693 if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1694 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1695
1696 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1697 h->valid_recovery_point = 1;
1698
1699 if ( h->recovery_frame < 0
1700 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1701 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1702
1703 if (!h->valid_recovery_point)
1704 h->recovery_frame = h->poc.frame_num;
1705 }
1706 }
1707
1708 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1709
1710 if (nal->type == H264_NAL_IDR_SLICE ||
1711 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1712 h->recovery_frame = -1;
1713 h->cur_pic_ptr->recovered = 1;
1714 }
1715 // If we have an IDR, all frames after it in decoded order are
1716 // "recovered".
1717 if (nal->type == H264_NAL_IDR_SLICE)
1718 h->frame_recovered |= FRAME_RECOVERED_IDR;
1719 #if 1
1720 h->cur_pic_ptr->recovered |= h->frame_recovered;
1721 #else
1722 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1723 #endif
1724
1725 /* Set the frame properties/side data. Only done for the second field in
1726 * field coded frames, since some SEI information is present for each field
1727 * and is merged by the SEI parsing code. */
1728 if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1729 ret = h264_export_frame_props(h);
1730 if (ret < 0)
1731 return ret;
1732
1733 ret = h264_select_output_frame(h);
1734 if (ret < 0)
1735 return ret;
1736 }
1737
1738 return 0;
1739 }
1740
h264_slice_header_parse(const H264Context * h,H264SliceContext * sl,const H2645NAL * nal)1741 static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1742 const H2645NAL *nal)
1743 {
1744 const SPS *sps;
1745 const PPS *pps;
1746 int ret;
1747 unsigned int slice_type, tmp, i;
1748 int field_pic_flag, bottom_field_flag;
1749 int first_slice = sl == h->slice_ctx && !h->current_slice;
1750 int picture_structure;
1751
1752 if (first_slice)
1753 av_assert0(!h->setup_finished);
1754
1755 sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1756
1757 slice_type = get_ue_golomb_31(&sl->gb);
1758 if (slice_type > 9) {
1759 av_log(h->avctx, AV_LOG_ERROR,
1760 "slice type %d too large at %d\n",
1761 slice_type, sl->first_mb_addr);
1762 return AVERROR_INVALIDDATA;
1763 }
1764 if (slice_type > 4) {
1765 slice_type -= 5;
1766 sl->slice_type_fixed = 1;
1767 } else
1768 sl->slice_type_fixed = 0;
1769
1770 slice_type = ff_h264_golomb_to_pict_type[slice_type];
1771 sl->slice_type = slice_type;
1772 sl->slice_type_nos = slice_type & 3;
1773
1774 if (nal->type == H264_NAL_IDR_SLICE &&
1775 sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1776 av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1777 return AVERROR_INVALIDDATA;
1778 }
1779
1780 sl->pps_id = get_ue_golomb(&sl->gb);
1781 if (sl->pps_id >= MAX_PPS_COUNT) {
1782 av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1783 return AVERROR_INVALIDDATA;
1784 }
1785 if (!h->ps.pps_list[sl->pps_id]) {
1786 av_log(h->avctx, AV_LOG_ERROR,
1787 "non-existing PPS %u referenced\n",
1788 sl->pps_id);
1789 return AVERROR_INVALIDDATA;
1790 }
1791 pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1792 sps = pps->sps;
1793
1794 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1795 if (!first_slice) {
1796 if (h->poc.frame_num != sl->frame_num) {
1797 av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1798 h->poc.frame_num, sl->frame_num);
1799 return AVERROR_INVALIDDATA;
1800 }
1801 }
1802
1803 sl->mb_mbaff = 0;
1804
1805 if (sps->frame_mbs_only_flag) {
1806 picture_structure = PICT_FRAME;
1807 } else {
1808 if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1809 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1810 return -1;
1811 }
1812 field_pic_flag = get_bits1(&sl->gb);
1813 if (field_pic_flag) {
1814 bottom_field_flag = get_bits1(&sl->gb);
1815 picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1816 } else {
1817 picture_structure = PICT_FRAME;
1818 }
1819 }
1820 sl->picture_structure = picture_structure;
1821 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1822
1823 if (picture_structure == PICT_FRAME) {
1824 sl->curr_pic_num = sl->frame_num;
1825 sl->max_pic_num = 1 << sps->log2_max_frame_num;
1826 } else {
1827 sl->curr_pic_num = 2 * sl->frame_num + 1;
1828 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1829 }
1830
1831 if (nal->type == H264_NAL_IDR_SLICE)
1832 get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1833
1834 sl->poc_lsb = 0;
1835 sl->delta_poc_bottom = 0;
1836 if (sps->poc_type == 0) {
1837 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1838
1839 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1840 sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1841 }
1842
1843 sl->delta_poc[0] = sl->delta_poc[1] = 0;
1844 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1845 sl->delta_poc[0] = get_se_golomb(&sl->gb);
1846
1847 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1848 sl->delta_poc[1] = get_se_golomb(&sl->gb);
1849 }
1850
1851 sl->redundant_pic_count = 0;
1852 if (pps->redundant_pic_cnt_present)
1853 sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1854
1855 if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1856 sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1857
1858 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
1859 &sl->gb, pps, sl->slice_type_nos,
1860 picture_structure, h->avctx);
1861 if (ret < 0)
1862 return ret;
1863
1864 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1865 ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx);
1866 if (ret < 0) {
1867 sl->ref_count[1] = sl->ref_count[0] = 0;
1868 return ret;
1869 }
1870 }
1871
1872 sl->pwt.use_weight = 0;
1873 for (i = 0; i < 2; i++) {
1874 sl->pwt.luma_weight_flag[i] = 0;
1875 sl->pwt.chroma_weight_flag[i] = 0;
1876 }
1877 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1878 (pps->weighted_bipred_idc == 1 &&
1879 sl->slice_type_nos == AV_PICTURE_TYPE_B)) {
1880 ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1881 sl->slice_type_nos, &sl->pwt,
1882 picture_structure, h->avctx);
1883 if (ret < 0)
1884 return ret;
1885 }
1886
1887 sl->explicit_ref_marking = 0;
1888 if (nal->ref_idc) {
1889 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1890 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1891 return AVERROR_INVALIDDATA;
1892 }
1893
1894 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1895 tmp = get_ue_golomb_31(&sl->gb);
1896 if (tmp > 2) {
1897 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1898 return AVERROR_INVALIDDATA;
1899 }
1900 sl->cabac_init_idc = tmp;
1901 }
1902
1903 sl->last_qscale_diff = 0;
1904 tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1905 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1906 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1907 return AVERROR_INVALIDDATA;
1908 }
1909 sl->qscale = tmp;
1910 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1911 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1912 // FIXME qscale / qp ... stuff
1913 if (sl->slice_type == AV_PICTURE_TYPE_SP)
1914 get_bits1(&sl->gb); /* sp_for_switch_flag */
1915 if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1916 sl->slice_type == AV_PICTURE_TYPE_SI)
1917 get_se_golomb(&sl->gb); /* slice_qs_delta */
1918
1919 sl->deblocking_filter = 1;
1920 sl->slice_alpha_c0_offset = 0;
1921 sl->slice_beta_offset = 0;
1922 if (pps->deblocking_filter_parameters_present) {
1923 tmp = get_ue_golomb_31(&sl->gb);
1924 if (tmp > 2) {
1925 av_log(h->avctx, AV_LOG_ERROR,
1926 "deblocking_filter_idc %u out of range\n", tmp);
1927 return AVERROR_INVALIDDATA;
1928 }
1929 sl->deblocking_filter = tmp;
1930 if (sl->deblocking_filter < 2)
1931 sl->deblocking_filter ^= 1; // 1<->0
1932
1933 if (sl->deblocking_filter) {
1934 int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1935 int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1936 if (slice_alpha_c0_offset_div2 > 6 ||
1937 slice_alpha_c0_offset_div2 < -6 ||
1938 slice_beta_offset_div2 > 6 ||
1939 slice_beta_offset_div2 < -6) {
1940 av_log(h->avctx, AV_LOG_ERROR,
1941 "deblocking filter parameters %d %d out of range\n",
1942 slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1943 return AVERROR_INVALIDDATA;
1944 }
1945 sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1946 sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1947 }
1948 }
1949
1950 return 0;
1951 }
1952
1953 /* do all the per-slice initialization needed before we can start decoding the
1954 * actual MBs */
h264_slice_init(H264Context * h,H264SliceContext * sl,const H2645NAL * nal)1955 static int h264_slice_init(H264Context *h, H264SliceContext *sl,
1956 const H2645NAL *nal)
1957 {
1958 int i, j, ret = 0;
1959
1960 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1961 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1962 return AVERROR_INVALIDDATA;
1963 }
1964
1965 av_assert1(h->mb_num == h->mb_width * h->mb_height);
1966 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1967 sl->first_mb_addr >= h->mb_num) {
1968 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1969 return AVERROR_INVALIDDATA;
1970 }
1971 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1972 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1973 FIELD_OR_MBAFF_PICTURE(h);
1974 if (h->picture_structure == PICT_BOTTOM_FIELD)
1975 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1976 av_assert1(sl->mb_y < h->mb_height);
1977
1978 ret = ff_h264_build_ref_list(h, sl);
1979 if (ret < 0)
1980 return ret;
1981
1982 if (h->ps.pps->weighted_bipred_idc == 2 &&
1983 sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1984 implicit_weight_table(h, sl, -1);
1985 if (FRAME_MBAFF(h)) {
1986 implicit_weight_table(h, sl, 0);
1987 implicit_weight_table(h, sl, 1);
1988 }
1989 }
1990
1991 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
1992 ff_h264_direct_dist_scale_factor(h, sl);
1993 if (!h->setup_finished)
1994 ff_h264_direct_ref_list_init(h, sl);
1995
1996 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1997 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
1998 h->nal_unit_type != H264_NAL_IDR_SLICE) ||
1999 (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA &&
2000 sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2001 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
2002 sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2003 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
2004 nal->ref_idc == 0))
2005 sl->deblocking_filter = 0;
2006
2007 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
2008 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
2009 /* Cheat slightly for speed:
2010 * Do not bother to deblock across slices. */
2011 sl->deblocking_filter = 2;
2012 } else {
2013 h->postpone_filter = 1;
2014 }
2015 }
2016 sl->qp_thresh = 15 -
2017 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
2018 FFMAX3(0,
2019 h->ps.pps->chroma_qp_index_offset[0],
2020 h->ps.pps->chroma_qp_index_offset[1]) +
2021 6 * (h->ps.sps->bit_depth_luma - 8);
2022
2023 sl->slice_num = ++h->current_slice;
2024
2025 if (sl->slice_num)
2026 h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
2027 if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
2028 && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
2029 && sl->slice_num >= MAX_SLICES) {
2030 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
2031 av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", sl->slice_num, MAX_SLICES);
2032 }
2033
2034 for (j = 0; j < 2; j++) {
2035 int id_list[16];
2036 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
2037 for (i = 0; i < 16; i++) {
2038 id_list[i] = 60;
2039 if (j < sl->list_count && i < sl->ref_count[j] &&
2040 sl->ref_list[j][i].parent->f->buf[0]) {
2041 int k;
2042 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
2043 for (k = 0; k < h->short_ref_count; k++)
2044 if (h->short_ref[k]->f->buf[0]->buffer == buf) {
2045 id_list[i] = k;
2046 break;
2047 }
2048 for (k = 0; k < h->long_ref_count; k++)
2049 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
2050 id_list[i] = h->short_ref_count + k;
2051 break;
2052 }
2053 }
2054 }
2055
2056 ref2frm[0] =
2057 ref2frm[1] = -1;
2058 for (i = 0; i < 16; i++)
2059 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
2060 ref2frm[18 + 0] =
2061 ref2frm[18 + 1] = -1;
2062 for (i = 16; i < 48; i++)
2063 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
2064 (sl->ref_list[j][i].reference & 3);
2065 }
2066
2067 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
2068 av_log(h->avctx, AV_LOG_DEBUG,
2069 "slice:%d %s mb:%d %c%s%s frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
2070 sl->slice_num,
2071 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2072 sl->mb_y * h->mb_width + sl->mb_x,
2073 av_get_picture_type_char(sl->slice_type),
2074 sl->slice_type_fixed ? " fix" : "",
2075 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2076 h->poc.frame_num,
2077 h->cur_pic_ptr->field_poc[0],
2078 h->cur_pic_ptr->field_poc[1],
2079 sl->ref_count[0], sl->ref_count[1],
2080 sl->qscale,
2081 sl->deblocking_filter,
2082 sl->slice_alpha_c0_offset, sl->slice_beta_offset,
2083 sl->pwt.use_weight,
2084 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2085 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2086 }
2087
2088 return 0;
2089 }
2090
ff_h264_queue_decode_slice(H264Context * h,const H2645NAL * nal)2091 int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
2092 {
2093 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
2094 int first_slice = sl == h->slice_ctx && !h->current_slice;
2095 int ret;
2096
2097 sl->gb = nal->gb;
2098
2099 ret = h264_slice_header_parse(h, sl, nal);
2100 if (ret < 0)
2101 return ret;
2102
2103 // discard redundant pictures
2104 if (sl->redundant_pic_count > 0) {
2105 sl->ref_count[0] = sl->ref_count[1] = 0;
2106 return 0;
2107 }
2108
2109 if (sl->first_mb_addr == 0 || !h->current_slice) {
2110 if (h->setup_finished) {
2111 av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2112 return AVERROR_INVALIDDATA;
2113 }
2114 }
2115
2116 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2117 if (h->current_slice) {
2118 // this slice starts a new field
2119 // first decode any pending queued slices
2120 if (h->nb_slice_ctx_queued) {
2121 H264SliceContext tmp_ctx;
2122
2123 ret = ff_h264_execute_decode_slices(h);
2124 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2125 return ret;
2126
2127 memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2128 memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2129 memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2130 sl = h->slice_ctx;
2131 }
2132
2133 if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2134 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2135 if (ret < 0)
2136 return ret;
2137 } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2138 av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2139 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2140 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2141 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2142 h->cur_pic_ptr = NULL;
2143 if (ret < 0)
2144 return ret;
2145 } else
2146 return AVERROR_INVALIDDATA;
2147 }
2148
2149 if (!h->first_field) {
2150 if (h->cur_pic_ptr && !h->droppable) {
2151 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2152 h->picture_structure == PICT_BOTTOM_FIELD);
2153 }
2154 h->cur_pic_ptr = NULL;
2155 }
2156 }
2157
2158 if (!h->current_slice)
2159 av_assert0(sl == h->slice_ctx);
2160
2161 if (h->current_slice == 0 && !h->first_field) {
2162 if (
2163 (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2164 (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2165 (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2166 (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) ||
2167 h->avctx->skip_frame >= AVDISCARD_ALL) {
2168 return 0;
2169 }
2170 }
2171
2172 if (!first_slice) {
2173 const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2174
2175 if (h->ps.pps->sps_id != pps->sps_id ||
2176 h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2177 (h->setup_finished && h->ps.pps != pps)*/) {
2178 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2179 return AVERROR_INVALIDDATA;
2180 }
2181 if (h->ps.sps != pps->sps) {
2182 av_log(h->avctx, AV_LOG_ERROR,
2183 "SPS changed in the middle of the frame\n");
2184 return AVERROR_INVALIDDATA;
2185 }
2186 }
2187
2188 if (h->current_slice == 0) {
2189 ret = h264_field_start(h, sl, nal, first_slice);
2190 if (ret < 0)
2191 return ret;
2192 } else {
2193 if (h->picture_structure != sl->picture_structure ||
2194 h->droppable != (nal->ref_idc == 0)) {
2195 av_log(h->avctx, AV_LOG_ERROR,
2196 "Changing field mode (%d -> %d) between slices is not allowed\n",
2197 h->picture_structure, sl->picture_structure);
2198 return AVERROR_INVALIDDATA;
2199 } else if (!h->cur_pic_ptr) {
2200 av_log(h->avctx, AV_LOG_ERROR,
2201 "unset cur_pic_ptr on slice %d\n",
2202 h->current_slice + 1);
2203 return AVERROR_INVALIDDATA;
2204 }
2205 }
2206
2207 ret = h264_slice_init(h, sl, nal);
2208 if (ret < 0)
2209 return ret;
2210
2211 h->nb_slice_ctx_queued++;
2212
2213 return 0;
2214 }
2215
ff_h264_get_slice_type(const H264SliceContext * sl)2216 int ff_h264_get_slice_type(const H264SliceContext *sl)
2217 {
2218 switch (sl->slice_type) {
2219 case AV_PICTURE_TYPE_P:
2220 return 0;
2221 case AV_PICTURE_TYPE_B:
2222 return 1;
2223 case AV_PICTURE_TYPE_I:
2224 return 2;
2225 case AV_PICTURE_TYPE_SP:
2226 return 3;
2227 case AV_PICTURE_TYPE_SI:
2228 return 4;
2229 default:
2230 return AVERROR_INVALIDDATA;
2231 }
2232 }
2233
fill_filter_caches_inter(const H264Context * h,H264SliceContext * sl,int mb_type,int top_xy,int left_xy[LEFT_MBS],int top_type,int left_type[LEFT_MBS],int mb_xy,int list)2234 static av_always_inline void fill_filter_caches_inter(const H264Context *h,
2235 H264SliceContext *sl,
2236 int mb_type, int top_xy,
2237 int left_xy[LEFT_MBS],
2238 int top_type,
2239 int left_type[LEFT_MBS],
2240 int mb_xy, int list)
2241 {
2242 int b_stride = h->b_stride;
2243 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2244 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2245 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2246 if (USES_LIST(top_type, list)) {
2247 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2248 const int b8_xy = 4 * top_xy + 2;
2249 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2250 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2251 ref_cache[0 - 1 * 8] =
2252 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2253 ref_cache[2 - 1 * 8] =
2254 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2255 } else {
2256 AV_ZERO128(mv_dst - 1 * 8);
2257 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2258 }
2259
2260 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2261 if (USES_LIST(left_type[LTOP], list)) {
2262 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2263 const int b8_xy = 4 * left_xy[LTOP] + 1;
2264 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2265 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2266 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2267 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2268 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2269 ref_cache[-1 + 0] =
2270 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2271 ref_cache[-1 + 16] =
2272 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2273 } else {
2274 AV_ZERO32(mv_dst - 1 + 0);
2275 AV_ZERO32(mv_dst - 1 + 8);
2276 AV_ZERO32(mv_dst - 1 + 16);
2277 AV_ZERO32(mv_dst - 1 + 24);
2278 ref_cache[-1 + 0] =
2279 ref_cache[-1 + 8] =
2280 ref_cache[-1 + 16] =
2281 ref_cache[-1 + 24] = LIST_NOT_USED;
2282 }
2283 }
2284 }
2285
2286 if (!USES_LIST(mb_type, list)) {
2287 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2288 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2289 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2290 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2291 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2292 return;
2293 }
2294
2295 {
2296 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2297 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2298 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2299 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2300 AV_WN32A(&ref_cache[0 * 8], ref01);
2301 AV_WN32A(&ref_cache[1 * 8], ref01);
2302 AV_WN32A(&ref_cache[2 * 8], ref23);
2303 AV_WN32A(&ref_cache[3 * 8], ref23);
2304 }
2305
2306 {
2307 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2308 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2309 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2310 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2311 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2312 }
2313 }
2314
2315 /**
2316 * @return non zero if the loop filter can be skipped
2317 */
fill_filter_caches(const H264Context * h,H264SliceContext * sl,int mb_type)2318 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2319 {
2320 const int mb_xy = sl->mb_xy;
2321 int top_xy, left_xy[LEFT_MBS];
2322 int top_type, left_type[LEFT_MBS];
2323 uint8_t *nnz;
2324 uint8_t *nnz_cache;
2325
2326 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2327
2328 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2329 if (FRAME_MBAFF(h)) {
2330 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2331 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2332 if (sl->mb_y & 1) {
2333 if (left_mb_field_flag != curr_mb_field_flag)
2334 left_xy[LTOP] -= h->mb_stride;
2335 } else {
2336 if (curr_mb_field_flag)
2337 top_xy += h->mb_stride &
2338 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2339 if (left_mb_field_flag != curr_mb_field_flag)
2340 left_xy[LBOT] += h->mb_stride;
2341 }
2342 }
2343
2344 sl->top_mb_xy = top_xy;
2345 sl->left_mb_xy[LTOP] = left_xy[LTOP];
2346 sl->left_mb_xy[LBOT] = left_xy[LBOT];
2347 {
2348 /* For sufficiently low qp, filtering wouldn't do anything.
2349 * This is a conservative estimate: could also check beta_offset
2350 * and more accurate chroma_qp. */
2351 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2352 int qp = h->cur_pic.qscale_table[mb_xy];
2353 if (qp <= qp_thresh &&
2354 (left_xy[LTOP] < 0 ||
2355 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2356 (top_xy < 0 ||
2357 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2358 if (!FRAME_MBAFF(h))
2359 return 1;
2360 if ((left_xy[LTOP] < 0 ||
2361 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2362 (top_xy < h->mb_stride ||
2363 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2364 return 1;
2365 }
2366 }
2367
2368 top_type = h->cur_pic.mb_type[top_xy];
2369 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2370 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2371 if (sl->deblocking_filter == 2) {
2372 if (h->slice_table[top_xy] != sl->slice_num)
2373 top_type = 0;
2374 if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2375 left_type[LTOP] = left_type[LBOT] = 0;
2376 } else {
2377 if (h->slice_table[top_xy] == 0xFFFF)
2378 top_type = 0;
2379 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2380 left_type[LTOP] = left_type[LBOT] = 0;
2381 }
2382 sl->top_type = top_type;
2383 sl->left_type[LTOP] = left_type[LTOP];
2384 sl->left_type[LBOT] = left_type[LBOT];
2385
2386 if (IS_INTRA(mb_type))
2387 return 0;
2388
2389 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2390 top_type, left_type, mb_xy, 0);
2391 if (sl->list_count == 2)
2392 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2393 top_type, left_type, mb_xy, 1);
2394
2395 nnz = h->non_zero_count[mb_xy];
2396 nnz_cache = sl->non_zero_count_cache;
2397 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2398 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2399 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2400 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2401 sl->cbp = h->cbp_table[mb_xy];
2402
2403 if (top_type) {
2404 nnz = h->non_zero_count[top_xy];
2405 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2406 }
2407
2408 if (left_type[LTOP]) {
2409 nnz = h->non_zero_count[left_xy[LTOP]];
2410 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2411 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2412 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2413 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2414 }
2415
2416 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2417 * from what the loop filter needs */
2418 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2419 if (IS_8x8DCT(top_type)) {
2420 nnz_cache[4 + 8 * 0] =
2421 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2422 nnz_cache[6 + 8 * 0] =
2423 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2424 }
2425 if (IS_8x8DCT(left_type[LTOP])) {
2426 nnz_cache[3 + 8 * 1] =
2427 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2428 }
2429 if (IS_8x8DCT(left_type[LBOT])) {
2430 nnz_cache[3 + 8 * 3] =
2431 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2432 }
2433
2434 if (IS_8x8DCT(mb_type)) {
2435 nnz_cache[scan8[0]] =
2436 nnz_cache[scan8[1]] =
2437 nnz_cache[scan8[2]] =
2438 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2439
2440 nnz_cache[scan8[0 + 4]] =
2441 nnz_cache[scan8[1 + 4]] =
2442 nnz_cache[scan8[2 + 4]] =
2443 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2444
2445 nnz_cache[scan8[0 + 8]] =
2446 nnz_cache[scan8[1 + 8]] =
2447 nnz_cache[scan8[2 + 8]] =
2448 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2449
2450 nnz_cache[scan8[0 + 12]] =
2451 nnz_cache[scan8[1 + 12]] =
2452 nnz_cache[scan8[2 + 12]] =
2453 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2454 }
2455 }
2456
2457 return 0;
2458 }
2459
loop_filter(const H264Context * h,H264SliceContext * sl,int start_x,int end_x)2460 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2461 {
2462 uint8_t *dest_y, *dest_cb, *dest_cr;
2463 int linesize, uvlinesize, mb_x, mb_y;
2464 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2465 const int old_slice_type = sl->slice_type;
2466 const int pixel_shift = h->pixel_shift;
2467 const int block_h = 16 >> h->chroma_y_shift;
2468
2469 if (h->postpone_filter)
2470 return;
2471
2472 if (sl->deblocking_filter) {
2473 for (mb_x = start_x; mb_x < end_x; mb_x++)
2474 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2475 int mb_xy, mb_type;
2476 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2477 mb_type = h->cur_pic.mb_type[mb_xy];
2478
2479 if (FRAME_MBAFF(h))
2480 sl->mb_mbaff =
2481 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2482
2483 sl->mb_x = mb_x;
2484 sl->mb_y = mb_y;
2485 dest_y = h->cur_pic.f->data[0] +
2486 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2487 dest_cb = h->cur_pic.f->data[1] +
2488 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2489 mb_y * sl->uvlinesize * block_h;
2490 dest_cr = h->cur_pic.f->data[2] +
2491 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2492 mb_y * sl->uvlinesize * block_h;
2493 // FIXME simplify above
2494
2495 if (MB_FIELD(sl)) {
2496 linesize = sl->mb_linesize = sl->linesize * 2;
2497 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2498 if (mb_y & 1) { // FIXME move out of this function?
2499 dest_y -= sl->linesize * 15;
2500 dest_cb -= sl->uvlinesize * (block_h - 1);
2501 dest_cr -= sl->uvlinesize * (block_h - 1);
2502 }
2503 } else {
2504 linesize = sl->mb_linesize = sl->linesize;
2505 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2506 }
2507 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2508 uvlinesize, 0);
2509 if (fill_filter_caches(h, sl, mb_type))
2510 continue;
2511 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2512 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2513
2514 if (FRAME_MBAFF(h)) {
2515 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2516 linesize, uvlinesize);
2517 } else {
2518 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2519 dest_cr, linesize, uvlinesize);
2520 }
2521 }
2522 }
2523 sl->slice_type = old_slice_type;
2524 sl->mb_x = end_x;
2525 sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2526 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2527 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2528 }
2529
predict_field_decoding_flag(const H264Context * h,H264SliceContext * sl)2530 static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
2531 {
2532 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2533 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2534 h->cur_pic.mb_type[mb_xy - 1] :
2535 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2536 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2537 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2538 }
2539
2540 /**
2541 * Draw edges and report progress for the last MB row.
2542 */
decode_finish_row(const H264Context * h,H264SliceContext * sl)2543 static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
2544 {
2545 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2546 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2547 int height = 16 << FRAME_MBAFF(h);
2548 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2549
2550 if (sl->deblocking_filter) {
2551 if ((top + height) >= pic_height)
2552 height += deblock_border;
2553 top -= deblock_border;
2554 }
2555
2556 if (top >= pic_height || (top + height) < 0)
2557 return;
2558
2559 height = FFMIN(height, pic_height - top);
2560 if (top < 0) {
2561 height = top + height;
2562 top = 0;
2563 }
2564
2565 ff_h264_draw_horiz_band(h, sl, top, height);
2566
2567 if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2568 return;
2569
2570 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2571 h->picture_structure == PICT_BOTTOM_FIELD);
2572 }
2573
er_add_slice(H264SliceContext * sl,int startx,int starty,int endx,int endy,int status)2574 static void er_add_slice(H264SliceContext *sl,
2575 int startx, int starty,
2576 int endx, int endy, int status)
2577 {
2578 if (!sl->h264->enable_er)
2579 return;
2580
2581 if (CONFIG_ERROR_RESILIENCE) {
2582 ERContext *er = &sl->h264->slice_ctx[0].er;
2583
2584 ff_er_add_slice(er, startx, starty, endx, endy, status);
2585 }
2586 }
2587
decode_slice(struct AVCodecContext * avctx,void * arg)2588 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2589 {
2590 H264SliceContext *sl = arg;
2591 const H264Context *h = sl->h264;
2592 int lf_x_start = sl->mb_x;
2593 int orig_deblock = sl->deblocking_filter;
2594 int ret;
2595
2596 sl->linesize = h->cur_pic_ptr->f->linesize[0];
2597 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2598
2599 ret = alloc_scratch_buffers(sl, sl->linesize);
2600 if (ret < 0)
2601 return ret;
2602
2603 sl->mb_skip_run = -1;
2604
2605 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2606
2607 if (h->postpone_filter)
2608 sl->deblocking_filter = 0;
2609
2610 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2611 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2612
2613 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
2614 const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2615 if (start_i) {
2616 int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2617 prev_status &= ~ VP_START;
2618 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2619 h->slice_ctx[0].er.error_occurred = 1;
2620 }
2621 }
2622
2623 if (h->ps.pps->cabac) {
2624 /* realign */
2625 align_get_bits(&sl->gb);
2626
2627 /* init cabac */
2628 ret = ff_init_cabac_decoder(&sl->cabac,
2629 sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2630 (get_bits_left(&sl->gb) + 7) / 8);
2631 if (ret < 0)
2632 return ret;
2633
2634 ff_h264_init_cabac_states(h, sl);
2635
2636 for (;;) {
2637 int ret, eos;
2638 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2639 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2640 sl->next_slice_idx);
2641 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2642 sl->mb_y, ER_MB_ERROR);
2643 return AVERROR_INVALIDDATA;
2644 }
2645
2646 ret = ff_h264_decode_mb_cabac(h, sl);
2647
2648 if (ret >= 0)
2649 ff_h264_hl_decode_mb(h, sl);
2650
2651 // FIXME optimal? or let mb_decode decode 16x32 ?
2652 if (ret >= 0 && FRAME_MBAFF(h)) {
2653 sl->mb_y++;
2654
2655 ret = ff_h264_decode_mb_cabac(h, sl);
2656
2657 if (ret >= 0)
2658 ff_h264_hl_decode_mb(h, sl);
2659 sl->mb_y--;
2660 }
2661 eos = get_cabac_terminate(&sl->cabac);
2662
2663 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2664 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2665 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2666 sl->mb_y, ER_MB_END);
2667 if (sl->mb_x >= lf_x_start)
2668 loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2669 goto finish;
2670 }
2671 if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2672 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2673 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2674 av_log(h->avctx, AV_LOG_ERROR,
2675 "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2676 sl->mb_x, sl->mb_y,
2677 sl->cabac.bytestream_end - sl->cabac.bytestream);
2678 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2679 sl->mb_y, ER_MB_ERROR);
2680 return AVERROR_INVALIDDATA;
2681 }
2682
2683 if (++sl->mb_x >= h->mb_width) {
2684 loop_filter(h, sl, lf_x_start, sl->mb_x);
2685 sl->mb_x = lf_x_start = 0;
2686 decode_finish_row(h, sl);
2687 ++sl->mb_y;
2688 if (FIELD_OR_MBAFF_PICTURE(h)) {
2689 ++sl->mb_y;
2690 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2691 predict_field_decoding_flag(h, sl);
2692 }
2693 }
2694
2695 if (eos || sl->mb_y >= h->mb_height) {
2696 ff_tlog(h->avctx, "slice end %d %d\n",
2697 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2698 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2699 sl->mb_y, ER_MB_END);
2700 if (sl->mb_x > lf_x_start)
2701 loop_filter(h, sl, lf_x_start, sl->mb_x);
2702 goto finish;
2703 }
2704 }
2705 } else {
2706 for (;;) {
2707 int ret;
2708
2709 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2710 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2711 sl->next_slice_idx);
2712 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2713 sl->mb_y, ER_MB_ERROR);
2714 return AVERROR_INVALIDDATA;
2715 }
2716
2717 ret = ff_h264_decode_mb_cavlc(h, sl);
2718
2719 if (ret >= 0)
2720 ff_h264_hl_decode_mb(h, sl);
2721
2722 // FIXME optimal? or let mb_decode decode 16x32 ?
2723 if (ret >= 0 && FRAME_MBAFF(h)) {
2724 sl->mb_y++;
2725 ret = ff_h264_decode_mb_cavlc(h, sl);
2726
2727 if (ret >= 0)
2728 ff_h264_hl_decode_mb(h, sl);
2729 sl->mb_y--;
2730 }
2731
2732 if (ret < 0) {
2733 av_log(h->avctx, AV_LOG_ERROR,
2734 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2735 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2736 sl->mb_y, ER_MB_ERROR);
2737 return ret;
2738 }
2739
2740 if (++sl->mb_x >= h->mb_width) {
2741 loop_filter(h, sl, lf_x_start, sl->mb_x);
2742 sl->mb_x = lf_x_start = 0;
2743 decode_finish_row(h, sl);
2744 ++sl->mb_y;
2745 if (FIELD_OR_MBAFF_PICTURE(h)) {
2746 ++sl->mb_y;
2747 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2748 predict_field_decoding_flag(h, sl);
2749 }
2750 if (sl->mb_y >= h->mb_height) {
2751 ff_tlog(h->avctx, "slice end %d %d\n",
2752 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2753
2754 if ( get_bits_left(&sl->gb) == 0
2755 || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2756 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2757 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2758
2759 goto finish;
2760 } else {
2761 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2762 sl->mb_x, sl->mb_y, ER_MB_END);
2763
2764 return AVERROR_INVALIDDATA;
2765 }
2766 }
2767 }
2768
2769 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2770 ff_tlog(h->avctx, "slice end %d %d\n",
2771 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2772
2773 if (get_bits_left(&sl->gb) == 0) {
2774 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2775 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2776 if (sl->mb_x > lf_x_start)
2777 loop_filter(h, sl, lf_x_start, sl->mb_x);
2778
2779 goto finish;
2780 } else {
2781 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2782 sl->mb_y, ER_MB_ERROR);
2783
2784 return AVERROR_INVALIDDATA;
2785 }
2786 }
2787 }
2788 }
2789
2790 finish:
2791 sl->deblocking_filter = orig_deblock;
2792 return 0;
2793 }
2794
2795 /**
2796 * Call decode_slice() for each context.
2797 *
2798 * @param h h264 master context
2799 */
ff_h264_execute_decode_slices(H264Context * h)2800 int ff_h264_execute_decode_slices(H264Context *h)
2801 {
2802 AVCodecContext *const avctx = h->avctx;
2803 H264SliceContext *sl;
2804 int context_count = h->nb_slice_ctx_queued;
2805 int ret = 0;
2806 int i, j;
2807
2808 h->slice_ctx[0].next_slice_idx = INT_MAX;
2809
2810 if (h->avctx->hwaccel || context_count < 1)
2811 return 0;
2812
2813 av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2814
2815 if (context_count == 1) {
2816
2817 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2818 h->postpone_filter = 0;
2819
2820 ret = decode_slice(avctx, &h->slice_ctx[0]);
2821 h->mb_y = h->slice_ctx[0].mb_y;
2822 if (ret < 0)
2823 goto finish;
2824 } else {
2825 av_assert0(context_count > 0);
2826 for (i = 0; i < context_count; i++) {
2827 int next_slice_idx = h->mb_width * h->mb_height;
2828 int slice_idx;
2829
2830 sl = &h->slice_ctx[i];
2831 if (CONFIG_ERROR_RESILIENCE) {
2832 sl->er.error_count = 0;
2833 }
2834
2835 /* make sure none of those slices overlap */
2836 slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2837 for (j = 0; j < context_count; j++) {
2838 H264SliceContext *sl2 = &h->slice_ctx[j];
2839 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2840
2841 if (i == j || slice_idx2 < slice_idx)
2842 continue;
2843 next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2844 }
2845 sl->next_slice_idx = next_slice_idx;
2846 }
2847
2848 avctx->execute(avctx, decode_slice, h->slice_ctx,
2849 NULL, context_count, sizeof(h->slice_ctx[0]));
2850
2851 /* pull back stuff from slices to master context */
2852 sl = &h->slice_ctx[context_count - 1];
2853 h->mb_y = sl->mb_y;
2854 if (CONFIG_ERROR_RESILIENCE) {
2855 for (i = 1; i < context_count; i++)
2856 h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
2857 }
2858
2859 if (h->postpone_filter) {
2860 h->postpone_filter = 0;
2861
2862 for (i = 0; i < context_count; i++) {
2863 int y_end, x_end;
2864
2865 sl = &h->slice_ctx[i];
2866 y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2867 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2868
2869 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2870 sl->mb_y = j;
2871 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2872 j == y_end - 1 ? x_end : h->mb_width);
2873 }
2874 }
2875 }
2876 }
2877
2878 finish:
2879 h->nb_slice_ctx_queued = 0;
2880 return ret;
2881 }
2882