h264: Eliminate unused but set variable
[libav.git] / libavcodec / h264_slice.c
CommitLineData
f51d0f39
LB
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 Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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
41ed7ab4 24 * H.264 / AVC / MPEG-4 part10 codec.
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LB
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28#include "libavutil/avassert.h"
f651c6a2 29#include "libavutil/display.h"
f51d0f39 30#include "libavutil/imgutils.h"
f651c6a2 31#include "libavutil/stereo3d.h"
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LB
32#include "libavutil/timer.h"
33#include "internal.h"
34#include "cabac.h"
35#include "cabac_functions.h"
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LB
36#include "error_resilience.h"
37#include "avcodec.h"
251cbb44 38#include "h264.h"
9df889a5 39#include "h264dec.h"
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LB
40#include "h264data.h"
41#include "h264chroma.h"
42#include "h264_mvpred.h"
f638b67e 43#include "h264_ps.h"
f51d0f39
LB
44#include "golomb.h"
45#include "mathops.h"
46#include "mpegutils.h"
47#include "rectangle.h"
48#include "thread.h"
49
f51d0f39
LB
50static const uint8_t field_scan[16] = {
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
57static const uint8_t field_scan8x8[64] = {
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
76static const uint8_t field_scan8x8_cavlc[64] = {
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)]
96static const uint8_t zigzag_scan8x8_cavlc[64] = {
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
f51d0f39
LB
115static 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++) {
a0f29460 121 if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
f51d0f39
LB
122 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
123 ff_h264_unref_picture(h, &h->DPB[i]);
124 }
125 }
126}
127
36d04801 128static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
f51d0f39 129{
c377e04d 130 const H264Context *h = sl->h264;
f51d0f39
LB
131 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
132
36d04801 133 av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
f51d0f39 134 // edge emu needs blocksize + filter length - 1
41ed7ab4 135 // (= 21x21 for H.264)
36d04801 136 av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
f51d0f39 137
c377e04d
AK
138 av_fast_malloc(&sl->top_borders[0], &sl->top_borders_allocated[0],
139 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
140 av_fast_malloc(&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]) {
36d04801
AK
145 av_freep(&sl->bipred_scratchpad);
146 av_freep(&sl->edge_emu_buffer);
c377e04d
AK
147 av_freep(&sl->top_borders[0]);
148 av_freep(&sl->top_borders[1]);
149
36d04801
AK
150 sl->bipred_scratchpad_allocated = 0;
151 sl->edge_emu_buffer_allocated = 0;
c377e04d
AK
152 sl->top_borders_allocated[0] = 0;
153 sl->top_borders_allocated[1] = 0;
f51d0f39
LB
154 return AVERROR(ENOMEM);
155 }
156
157 return 0;
158}
159
160static 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);
2db953f8
LB
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);
f51d0f39
LB
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
187static int alloc_picture(H264Context *h, H264Picture *pic)
188{
189 int i, ret = 0;
190
a0f29460 191 av_assert0(!pic->f->data[0]);
f51d0f39 192
a0f29460 193 pic->tf.f = pic->f;
f51d0f39
LB
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
f51d0f39
LB
199 if (h->avctx->hwaccel) {
200 const AVHWAccel *hwaccel = h->avctx->hwaccel;
201 av_assert0(!pic->hwaccel_picture_private);
a871ef0c
AK
202 if (hwaccel->frame_priv_data_size) {
203 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
f51d0f39
LB
204 if (!pic->hwaccel_priv_buf)
205 return AVERROR(ENOMEM);
206 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
207 }
208 }
209
210 if (!h->qscale_table_pool) {
211 ret = init_table_pools(h);
212 if (ret < 0)
213 goto fail;
214 }
215
216 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
217 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
218 if (!pic->qscale_table_buf || !pic->mb_type_buf)
219 goto fail;
220
221 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
222 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
223
224 for (i = 0; i < 2; i++) {
225 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
226 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
227 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
228 goto fail;
229
230 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
231 pic->ref_index[i] = pic->ref_index_buf[i]->data;
232 }
233
234 return 0;
235fail:
236 ff_h264_unref_picture(h, pic);
237 return (ret < 0) ? ret : AVERROR(ENOMEM);
238}
239
240static inline int pic_is_unused(H264Context *h, H264Picture *pic)
241{
a0f29460 242 if (!pic->f->buf[0])
f51d0f39 243 return 1;
f51d0f39
LB
244 return 0;
245}
246
247static int find_unused_picture(H264Context *h)
248{
249 int i;
250
251 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
252 if (pic_is_unused(h, &h->DPB[i]))
253 break;
254 }
255 if (i == H264_MAX_PICTURE_COUNT)
256 return AVERROR_INVALIDDATA;
257
f51d0f39
LB
258 return i;
259}
260
f1ccd076
AK
261static int initialize_cur_frame(H264Context *h)
262{
263 H264Picture *cur;
264 int ret;
265
266 release_unused_pictures(h, 1);
267 ff_h264_unref_picture(h, &h->cur_pic);
268 h->cur_pic_ptr = NULL;
269
270 ret = find_unused_picture(h);
271 if (ret < 0) {
272 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
273 return ret;
274 }
275 cur = &h->DPB[ret];
276
277 ret = alloc_picture(h, cur);
278 if (ret < 0)
279 return ret;
280
281 ret = ff_h264_ref_picture(h, &h->cur_pic, cur);
282 if (ret < 0)
283 return ret;
284 h->cur_pic_ptr = cur;
285
286 return 0;
287}
f51d0f39 288
f51d0f39 289#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
d75190aa 290
f51d0f39
LB
291#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
292 ((pic && pic >= old_ctx->DPB && \
293 pic < old_ctx->DPB + H264_MAX_PICTURE_COUNT) ? \
294 &new_ctx->DPB[pic - old_ctx->DPB] : NULL)
295
296static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
297 H264Context *new_base,
298 H264Context *old_base)
299{
300 int i;
301
302 for (i = 0; i < count; i++) {
303 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
304 IN_RANGE(from[i], old_base->DPB,
305 sizeof(H264Picture) * H264_MAX_PICTURE_COUNT) ||
306 !from[i]));
307 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
308 }
309}
310
8a66fd40 311static int h264_slice_header_init(H264Context *h);
f51d0f39
LB
312
313int ff_h264_update_thread_context(AVCodecContext *dst,
314 const AVCodecContext *src)
315{
316 H264Context *h = dst->priv_data, *h1 = src->priv_data;
317 int inited = h->context_initialized, err = 0;
54986d6d 318 int need_reinit = 0;
f51d0f39
LB
319 int i, ret;
320
321 if (dst == src || !h1->context_initialized)
322 return 0;
323
3176217c
AK
324 if (!h1->ps.sps)
325 return AVERROR_INVALIDDATA;
326
f51d0f39
LB
327 if (inited &&
328 (h->width != h1->width ||
329 h->height != h1->height ||
330 h->mb_width != h1->mb_width ||
331 h->mb_height != h1->mb_height ||
3176217c
AK
332 !h->ps.sps ||
333 h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
334 h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
335 h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
54986d6d 336 need_reinit = 1;
f51d0f39
LB
337 }
338
88c612e3 339 // SPS/PPS
3176217c
AK
340 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
341 av_buffer_unref(&h->ps.sps_list[i]);
342 if (h1->ps.sps_list[i]) {
343 h->ps.sps_list[i] = av_buffer_ref(h1->ps.sps_list[i]);
344 if (!h->ps.sps_list[i])
345 return AVERROR(ENOMEM);
346 }
347 }
348 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
349 av_buffer_unref(&h->ps.pps_list[i]);
350 if (h1->ps.pps_list[i]) {
351 h->ps.pps_list[i] = av_buffer_ref(h1->ps.pps_list[i]);
352 if (!h->ps.pps_list[i])
353 return AVERROR(ENOMEM);
354 }
355 }
356
357 h->ps.sps = h1->ps.sps;
88c612e3
AK
358
359 if (need_reinit || !inited) {
360 h->width = h1->width;
361 h->height = h1->height;
362 h->mb_height = h1->mb_height;
363 h->mb_width = h1->mb_width;
364 h->mb_num = h1->mb_num;
365 h->mb_stride = h1->mb_stride;
366 h->b_stride = h1->b_stride;
367
368 if ((err = h264_slice_header_init(h)) < 0) {
369 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
370 return err;
f51d0f39
LB
371 }
372
88c612e3
AK
373 /* copy block_offset since frame_start may not be called */
374 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
f51d0f39
LB
375 }
376
377 h->avctx->coded_height = h1->avctx->coded_height;
378 h->avctx->coded_width = h1->avctx->coded_width;
379 h->avctx->width = h1->avctx->width;
380 h->avctx->height = h1->avctx->height;
381 h->coded_picture_number = h1->coded_picture_number;
382 h->first_field = h1->first_field;
383 h->picture_structure = h1->picture_structure;
54dd9b1c 384 h->mb_aff_frame = h1->mb_aff_frame;
f51d0f39 385 h->droppable = h1->droppable;
f51d0f39
LB
386
387 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
388 ff_h264_unref_picture(h, &h->DPB[i]);
a0f29460 389 if (h1->DPB[i].f->buf[0] &&
f51d0f39
LB
390 (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
391 return ret;
392 }
393
394 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
395 ff_h264_unref_picture(h, &h->cur_pic);
a0f29460 396 if (h1->cur_pic.f->buf[0]) {
0dea4c77
AK
397 ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
398 if (ret < 0)
399 return ret;
400 }
f51d0f39 401
a4d34e21 402 h->enable_er = h1->enable_er;
f51d0f39 403 h->workaround_bugs = h1->workaround_bugs;
f51d0f39
LB
404 h->droppable = h1->droppable;
405
f51d0f39
LB
406 // extradata/NAL handling
407 h->is_avc = h1->is_avc;
29dcde2b 408 h->nal_length_size = h1->nal_length_size;
f51d0f39 409
0ba471d7
AK
410 memcpy(&h->poc, &h1->poc, sizeof(h->poc));
411
0ba471d7
AK
412 memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
413 memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
414 memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
415 memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
416
417 h->next_output_pic = h1->next_output_pic;
418 h->next_outputed_poc = h1->next_outputed_poc;
419
420 memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
39ab2ea5 421 h->nb_mmco = h1->nb_mmco;
0ba471d7 422 h->mmco_reset = h1->mmco_reset;
bec99338 423 h->explicit_ref_marking = h1->explicit_ref_marking;
0ba471d7
AK
424 h->long_ref_count = h1->long_ref_count;
425 h->short_ref_count = h1->short_ref_count;
f51d0f39
LB
426
427 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
428 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
429 copy_picture_range(h->delayed_pic, h1->delayed_pic,
430 MAX_DELAYED_PIC_COUNT + 2, h, h1);
431
f51d0f39
LB
432 if (!h->cur_pic_ptr)
433 return 0;
434
435 if (!h->droppable) {
bec99338 436 err = ff_h264_execute_ref_pic_marking(h);
c8dcff0c
AK
437 h->poc.prev_poc_msb = h->poc.poc_msb;
438 h->poc.prev_poc_lsb = h->poc.poc_lsb;
f51d0f39 439 }
c8dcff0c
AK
440 h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
441 h->poc.prev_frame_num = h->poc.frame_num;
f51d0f39
LB
442
443 h->recovery_frame = h1->recovery_frame;
444 h->frame_recovered = h1->frame_recovered;
445
446 return err;
447}
448
449static int h264_frame_start(H264Context *h)
450{
451 H264Picture *pic;
452 int i, ret;
453 const int pixel_shift = h->pixel_shift;
454
f1ccd076
AK
455 ret = initialize_cur_frame(h);
456 if (ret < 0)
457 return ret;
f51d0f39 458
f1ccd076 459 pic = h->cur_pic_ptr;
f51d0f39 460 pic->reference = h->droppable ? 0 : h->picture_structure;
a0f29460 461 pic->f->coded_picture_number = h->coded_picture_number++;
f51d0f39 462 pic->field_picture = h->picture_structure != PICT_FRAME;
c8dcff0c 463 pic->frame_num = h->poc.frame_num;
f51d0f39
LB
464 /*
465 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
466 * in later.
467 * See decode_nal_units().
468 */
a0f29460 469 pic->f->key_frame = 0;
f51d0f39
LB
470 pic->mmco_reset = 0;
471 pic->recovered = 0;
472
370ddc7b
AK
473 pic->f->pict_type = h->slice_ctx[0].slice_type;
474
a4d34e21 475 if (CONFIG_ERROR_RESILIENCE && h->enable_er)
582683b6 476 ff_er_frame_start(&h->slice_ctx[0].er);
f51d0f39 477
f51d0f39 478 for (i = 0; i < 16; i++) {
a0f29460
AK
479 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
480 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
f51d0f39
LB
481 }
482 for (i = 0; i < 16; i++) {
483 h->block_offset[16 + i] =
a0f29460 484 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
f51d0f39 485 h->block_offset[48 + 16 + i] =
a0f29460 486 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
f51d0f39
LB
487 }
488
f51d0f39
LB
489 /* Some macroblocks can be accessed before they're available in case
490 * of lost slices, MBAFF or threading. */
491 memset(h->slice_table, -1,
492 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
493
f51d0f39
LB
494 /* We mark the current picture as non-reference after allocating it, so
495 * that if we break out due to an error it can be released automatically
835f798c 496 * in the next ff_mpv_frame_start().
f51d0f39
LB
497 */
498 h->cur_pic_ptr->reference = 0;
499
500 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
501
502 h->next_output_pic = NULL;
503
b77fffa1
AK
504 h->postpone_filter = 0;
505
54dd9b1c
AK
506 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
507
f51d0f39
LB
508 assert(h->cur_pic_ptr->long_ref == 0);
509
510 return 0;
511}
512
92e0b734 513static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
d4d9068c 514 uint8_t *src_y,
f51d0f39
LB
515 uint8_t *src_cb, uint8_t *src_cr,
516 int linesize, int uvlinesize,
517 int simple)
518{
519 uint8_t *top_border;
520 int top_idx = 1;
521 const int pixel_shift = h->pixel_shift;
522 int chroma444 = CHROMA444(h);
523 int chroma422 = CHROMA422(h);
524
525 src_y -= linesize;
526 src_cb -= uvlinesize;
527 src_cr -= uvlinesize;
528
529 if (!simple && FRAME_MBAFF(h)) {
d4d9068c 530 if (sl->mb_y & 1) {
e9b2383b 531 if (!MB_MBAFF(sl)) {
c377e04d 532 top_border = sl->top_borders[0][sl->mb_x];
f51d0f39
LB
533 AV_COPY128(top_border, src_y + 15 * linesize);
534 if (pixel_shift)
535 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
7c6eb0a1 536 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
f51d0f39
LB
537 if (chroma444) {
538 if (pixel_shift) {
539 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
540 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
541 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
542 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
543 } else {
544 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
545 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
546 }
547 } else if (chroma422) {
548 if (pixel_shift) {
549 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
550 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
551 } else {
552 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
553 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
554 }
555 } else {
556 if (pixel_shift) {
557 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
558 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
559 } else {
560 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
561 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
562 }
563 }
564 }
565 }
e9b2383b 566 } else if (MB_MBAFF(sl)) {
f51d0f39
LB
567 top_idx = 0;
568 } else
569 return;
570 }
571
c377e04d 572 top_border = sl->top_borders[top_idx][sl->mb_x];
f51d0f39
LB
573 /* There are two lines saved, the line above the top macroblock
574 * of a pair, and the line above the bottom macroblock. */
575 AV_COPY128(top_border, src_y + 16 * linesize);
576 if (pixel_shift)
577 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
578
7c6eb0a1 579 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
f51d0f39
LB
580 if (chroma444) {
581 if (pixel_shift) {
582 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
583 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
584 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
585 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
586 } else {
587 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
588 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
589 }
590 } else if (chroma422) {
591 if (pixel_shift) {
592 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
593 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
594 } else {
595 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
596 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
597 }
598 } else {
599 if (pixel_shift) {
600 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
601 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
602 } else {
603 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
604 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
605 }
606 }
607 }
608}
609
610/**
611 * Initialize implicit_weight table.
612 * @param field 0/1 initialize the weight for interlaced MBAFF
613 * -1 initializes the rest
614 */
92e0b734 615static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
f51d0f39
LB
616{
617 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
618
619 for (i = 0; i < 2; i++) {
e481458b
AK
620 sl->pwt.luma_weight_flag[i] = 0;
621 sl->pwt.chroma_weight_flag[i] = 0;
f51d0f39
LB
622 }
623
624 if (field < 0) {
625 if (h->picture_structure == PICT_FRAME) {
626 cur_poc = h->cur_pic_ptr->poc;
627 } else {
628 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
629 }
95eb35f3
AK
630 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
631 sl->ref_list[0][0].poc + sl->ref_list[1][0].poc == 2 * cur_poc) {
e481458b
AK
632 sl->pwt.use_weight = 0;
633 sl->pwt.use_weight_chroma = 0;
f51d0f39
LB
634 return;
635 }
636 ref_start = 0;
95eb35f3
AK
637 ref_count0 = sl->ref_count[0];
638 ref_count1 = sl->ref_count[1];
f51d0f39
LB
639 } else {
640 cur_poc = h->cur_pic_ptr->field_poc[field];
641 ref_start = 16;
95eb35f3
AK
642 ref_count0 = 16 + 2 * sl->ref_count[0];
643 ref_count1 = 16 + 2 * sl->ref_count[1];
f51d0f39
LB
644 }
645
e481458b
AK
646 sl->pwt.use_weight = 2;
647 sl->pwt.use_weight_chroma = 2;
648 sl->pwt.luma_log2_weight_denom = 5;
649 sl->pwt.chroma_log2_weight_denom = 5;
f51d0f39
LB
650
651 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
95eb35f3 652 int poc0 = sl->ref_list[0][ref0].poc;
f51d0f39
LB
653 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
654 int w = 32;
a12d3188 655 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
95eb35f3 656 int poc1 = sl->ref_list[1][ref1].poc;
9abc80f1 657 int td = av_clip_int8(poc1 - poc0);
f51d0f39 658 if (td) {
9abc80f1 659 int tb = av_clip_int8(cur_poc - poc0);
f51d0f39
LB
660 int tx = (16384 + (FFABS(td) >> 1)) / td;
661 int dist_scale_factor = (tb * tx + 32) >> 8;
662 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
663 w = 64 - dist_scale_factor;
664 }
665 }
666 if (field < 0) {
e481458b
AK
667 sl->pwt.implicit_weight[ref0][ref1][0] =
668 sl->pwt.implicit_weight[ref0][ref1][1] = w;
f51d0f39 669 } else {
e481458b 670 sl->pwt.implicit_weight[ref0][ref1][field] = w;
f51d0f39
LB
671 }
672 }
673 }
674}
675
676/**
677 * initialize scan tables
678 */
679static void init_scan_tables(H264Context *h)
680{
681 int i;
682 for (i = 0; i < 16; i++) {
683#define TRANSPOSE(x) (x >> 2) | ((x << 2) & 0xF)
f4d581cd 684 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
f51d0f39
LB
685 h->field_scan[i] = TRANSPOSE(field_scan[i]);
686#undef TRANSPOSE
687 }
688 for (i = 0; i < 64; i++) {
689#define TRANSPOSE(x) (x >> 3) | ((x & 7) << 3)
690 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
691 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
692 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
693 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
694#undef TRANSPOSE
695 }
3176217c 696 if (h->ps.sps->transform_bypass) { // FIXME same ugly
f4d581cd 697 h->zigzag_scan_q0 = ff_zigzag_scan;
f51d0f39
LB
698 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
699 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
700 h->field_scan_q0 = field_scan;
701 h->field_scan8x8_q0 = field_scan8x8;
702 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
703 } else {
704 h->zigzag_scan_q0 = h->zigzag_scan;
705 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
706 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
707 h->field_scan_q0 = h->field_scan;
708 h->field_scan8x8_q0 = h->field_scan8x8;
709 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
710 }
711}
712
f51d0f39
LB
713static enum AVPixelFormat get_pixel_format(H264Context *h)
714{
4cfbeef3 715#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
08d006f5 716 CONFIG_H264_D3D11VA_HWACCEL + \
4cfbeef3
RDC
717 CONFIG_H264_VAAPI_HWACCEL + \
718 (CONFIG_H264_VDA_HWACCEL * 2) + \
719 CONFIG_H264_VDPAU_HWACCEL)
720 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
ce423163
RDC
721 const enum AVPixelFormat *choices = pix_fmts;
722
3176217c 723 switch (h->ps.sps->bit_depth_luma) {
f51d0f39
LB
724 case 9:
725 if (CHROMA444(h)) {
726 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
4cfbeef3 727 *fmt++ = AV_PIX_FMT_GBRP9;
f51d0f39 728 } else
4cfbeef3 729 *fmt++ = AV_PIX_FMT_YUV444P9;
f51d0f39 730 } else if (CHROMA422(h))
4cfbeef3 731 *fmt++ = AV_PIX_FMT_YUV422P9;
f51d0f39 732 else
4cfbeef3 733 *fmt++ = AV_PIX_FMT_YUV420P9;
f51d0f39
LB
734 break;
735 case 10:
736 if (CHROMA444(h)) {
737 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
4cfbeef3 738 *fmt++ = AV_PIX_FMT_GBRP10;
f51d0f39 739 } else
4cfbeef3 740 *fmt++ = AV_PIX_FMT_YUV444P10;
f51d0f39 741 } else if (CHROMA422(h))
4cfbeef3 742 *fmt++ = AV_PIX_FMT_YUV422P10;
f51d0f39 743 else
4cfbeef3 744 *fmt++ = AV_PIX_FMT_YUV420P10;
f51d0f39
LB
745 break;
746 case 8:
ebd5320a
RDC
747#if CONFIG_H264_VDPAU_HWACCEL
748 *fmt++ = AV_PIX_FMT_VDPAU;
749#endif
f51d0f39 750 if (CHROMA444(h)) {
ce423163 751 if (h->avctx->colorspace == AVCOL_SPC_RGB)
4cfbeef3 752 *fmt++ = AV_PIX_FMT_GBRP;
ce423163 753 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
4cfbeef3 754 *fmt++ = AV_PIX_FMT_YUVJ444P;
ce423163 755 else
4cfbeef3 756 *fmt++ = AV_PIX_FMT_YUV444P;
f51d0f39 757 } else if (CHROMA422(h)) {
ce423163 758 if (h->avctx->color_range == AVCOL_RANGE_JPEG)
4cfbeef3 759 *fmt++ = AV_PIX_FMT_YUVJ422P;
ce423163 760 else
4cfbeef3 761 *fmt++ = AV_PIX_FMT_YUV422P;
f51d0f39 762 } else {
4cfbeef3
RDC
763#if CONFIG_H264_DXVA2_HWACCEL
764 *fmt++ = AV_PIX_FMT_DXVA2_VLD;
765#endif
d8039ef8
SL
766#if CONFIG_H264_D3D11VA_HWACCEL
767 *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
768#endif
4cfbeef3 769#if CONFIG_H264_VAAPI_HWACCEL
d264c720 770 *fmt++ = AV_PIX_FMT_VAAPI;
4cfbeef3
RDC
771#endif
772#if CONFIG_H264_VDA_HWACCEL
773 *fmt++ = AV_PIX_FMT_VDA_VLD;
774 *fmt++ = AV_PIX_FMT_VDA;
775#endif
ce423163
RDC
776 if (h->avctx->codec->pix_fmts)
777 choices = h->avctx->codec->pix_fmts;
778 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
4cfbeef3 779 *fmt++ = AV_PIX_FMT_YUVJ420P;
ce423163 780 else
4cfbeef3 781 *fmt++ = AV_PIX_FMT_YUV420P;
f51d0f39
LB
782 }
783 break;
784 default:
785 av_log(h->avctx, AV_LOG_ERROR,
3176217c 786 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
f51d0f39
LB
787 return AVERROR_INVALIDDATA;
788 }
ce423163 789
4cfbeef3
RDC
790 *fmt = AV_PIX_FMT_NONE;
791
ce423163 792 return ff_get_format(h->avctx, choices);
f51d0f39
LB
793}
794
795/* export coded and cropped frame dimensions to AVCodecContext */
796static int init_dimensions(H264Context *h)
797{
3176217c
AK
798 SPS *sps = h->ps.sps;
799 int width = h->width - (sps->crop_right + sps->crop_left);
800 int height = h->height - (sps->crop_top + sps->crop_bottom);
f51d0f39
LB
801
802 /* handle container cropping */
3e3056f2
VG
803 if (FFALIGN(h->avctx->width, 16) == FFALIGN(width, 16) &&
804 FFALIGN(h->avctx->height, 16) == FFALIGN(height, 16)) {
f51d0f39
LB
805 width = h->avctx->width;
806 height = h->avctx->height;
807 }
808
809 if (width <= 0 || height <= 0) {
810 av_log(h->avctx, AV_LOG_ERROR, "Invalid cropped dimensions: %dx%d.\n",
811 width, height);
812 if (h->avctx->err_recognition & AV_EF_EXPLODE)
813 return AVERROR_INVALIDDATA;
814
815 av_log(h->avctx, AV_LOG_WARNING, "Ignoring cropping information.\n");
3176217c
AK
816 sps->crop_bottom =
817 sps->crop_top =
818 sps->crop_right =
819 sps->crop_left =
820 sps->crop = 0;
f51d0f39
LB
821
822 width = h->width;
823 height = h->height;
824 }
825
826 h->avctx->coded_width = h->width;
827 h->avctx->coded_height = h->height;
828 h->avctx->width = width;
829 h->avctx->height = height;
830
831 return 0;
832}
833
8a66fd40 834static int h264_slice_header_init(H264Context *h)
f51d0f39 835{
3176217c 836 const SPS *sps = h->ps.sps;
f51d0f39
LB
837 int i, ret;
838
3176217c 839 ff_set_sar(h->avctx, sps->sar);
f51d0f39
LB
840 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
841 &h->chroma_x_shift, &h->chroma_y_shift);
842
3176217c
AK
843 if (sps->timing_info_present_flag) {
844 int64_t den = sps->time_scale;
728d90a0 845 if (h->sei.unregistered.x264_build < 44U)
f51d0f39 846 den *= 2;
7ea1b347 847 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
3176217c 848 sps->num_units_in_tick, den, 1 << 30);
f51d0f39
LB
849 }
850
8a66fd40
AK
851 ff_h264_free_tables(h);
852
f51d0f39
LB
853 h->first_field = 0;
854 h->prev_interlaced_frame = 1;
855
856 init_scan_tables(h);
857 ret = ff_h264_alloc_tables(h);
858 if (ret < 0) {
859 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
860 return ret;
861 }
862
3176217c 863 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 10) {
ee62b364 864 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
3176217c 865 sps->bit_depth_luma);
ee62b364
AK
866 return AVERROR_INVALIDDATA;
867 }
868
3176217c
AK
869 h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
870 h->pixel_shift = sps->bit_depth_luma > 8;
871 h->chroma_format_idc = sps->chroma_format_idc;
872 h->bit_depth_luma = sps->bit_depth_luma;
ee62b364 873
3176217c
AK
874 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
875 sps->chroma_format_idc);
876 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
877 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
878 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
879 sps->chroma_format_idc);
880 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
ee62b364 881
f51d0f39 882 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
582683b6 883 ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
f51d0f39
LB
884 if (ret < 0) {
885 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
886 return ret;
887 }
888 } else {
e0652795 889 for (i = 0; i < h->nb_slice_ctx; i++) {
5bf3c0fa 890 H264SliceContext *sl = &h->slice_ctx[i];
f51d0f39 891
5bf3c0fa
AK
892 sl->h264 = h;
893 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
894 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
895 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
896
897 if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
f51d0f39
LB
898 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
899 return ret;
900 }
5bf3c0fa 901 }
f51d0f39
LB
902 }
903
904 h->context_initialized = 1;
905
906 return 0;
907}
908
61f168ae
AK
909static int h264_init_ps(H264Context *h, const H264SliceContext *sl)
910{
911 const SPS *sps;
912 int needs_reinit = 0, ret;
913
914 h->ps.pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
915 if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
916 h->ps.sps = (SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data;
917
918 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
919 h->chroma_format_idc != h->ps.sps->chroma_format_idc)
920 needs_reinit = 1;
921 }
922 sps = h->ps.sps;
923
924 h->avctx->profile = ff_h264_get_profile(sps);
925 h->avctx->level = sps->level_idc;
926 h->avctx->refs = sps->ref_frame_count;
927
928 if (h->mb_width != sps->mb_width ||
929 h->mb_height != sps->mb_height * (2 - sps->frame_mbs_only_flag))
930 needs_reinit = 1;
931
932 h->mb_width = sps->mb_width;
933 h->mb_height = sps->mb_height * (2 - sps->frame_mbs_only_flag);
934 h->mb_num = h->mb_width * h->mb_height;
935 h->mb_stride = h->mb_width + 1;
936
937 h->b_stride = h->mb_width * 4;
938
939 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
940
941 h->width = 16 * h->mb_width;
942 h->height = 16 * h->mb_height;
943
944 ret = init_dimensions(h);
945 if (ret < 0)
946 return ret;
947
948 if (sps->video_signal_type_present_flag) {
949 h->avctx->color_range = sps->full_range ? AVCOL_RANGE_JPEG
950 : AVCOL_RANGE_MPEG;
951 if (sps->colour_description_present_flag) {
952 if (h->avctx->colorspace != sps->colorspace)
953 needs_reinit = 1;
954 h->avctx->color_primaries = sps->color_primaries;
955 h->avctx->color_trc = sps->color_trc;
956 h->avctx->colorspace = sps->colorspace;
957 }
958 }
959
960 if (!h->context_initialized || needs_reinit) {
961 h->context_initialized = 0;
962 if (sl != h->slice_ctx) {
963 av_log(h->avctx, AV_LOG_ERROR,
964 "changing width %d -> %d / height %d -> %d on "
965 "slice %d\n",
966 h->width, h->avctx->coded_width,
967 h->height, h->avctx->coded_height,
968 h->current_slice + 1);
969 return AVERROR_INVALIDDATA;
970 }
971
972 ff_h264_flush_change(h);
973
974 if ((ret = get_pixel_format(h)) < 0)
975 return ret;
976 h->avctx->pix_fmt = ret;
977
978 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
979 "pix_fmt: %d\n", h->width, h->height, h->avctx->pix_fmt);
980
981 if ((ret = h264_slice_header_init(h)) < 0) {
982 av_log(h->avctx, AV_LOG_ERROR,
983 "h264_slice_header_init() failed\n");
984 return ret;
985 }
986 }
987
988 return 0;
989}
990
f651c6a2
AK
991static int h264_export_frame_props(H264Context *h)
992{
993 const SPS *sps = h->ps.sps;
994 H264Picture *cur = h->cur_pic_ptr;
995
996 cur->f->interlaced_frame = 0;
997 cur->f->repeat_pict = 0;
998
999 /* Signal interlacing information externally. */
1000 /* Prioritize picture timing SEI information over used
1001 * decoding process if it exists. */
1002
1003 if (sps->pic_struct_present_flag) {
1004 H264SEIPictureTiming *pt = &h->sei.picture_timing;
1005 switch (pt->pic_struct) {
1006 case SEI_PIC_STRUCT_FRAME:
1007 break;
1008 case SEI_PIC_STRUCT_TOP_FIELD:
1009 case SEI_PIC_STRUCT_BOTTOM_FIELD:
1010 cur->f->interlaced_frame = 1;
1011 break;
1012 case SEI_PIC_STRUCT_TOP_BOTTOM:
1013 case SEI_PIC_STRUCT_BOTTOM_TOP:
1014 if (FIELD_OR_MBAFF_PICTURE(h))
1015 cur->f->interlaced_frame = 1;
1016 else
1017 // try to flag soft telecine progressive
1018 cur->f->interlaced_frame = h->prev_interlaced_frame;
1019 break;
1020 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1021 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1022 /* Signal the possibility of telecined film externally
1023 * (pic_struct 5,6). From these hints, let the applications
1024 * decide if they apply deinterlacing. */
1025 cur->f->repeat_pict = 1;
1026 break;
1027 case SEI_PIC_STRUCT_FRAME_DOUBLING:
1028 cur->f->repeat_pict = 2;
1029 break;
1030 case SEI_PIC_STRUCT_FRAME_TRIPLING:
1031 cur->f->repeat_pict = 4;
1032 break;
1033 }
1034
1035 if ((pt->ct_type & 3) &&
1036 pt->pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
1037 cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1038 } else {
1039 /* Derive interlacing flag from used decoding process. */
1040 cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1041 }
1042 h->prev_interlaced_frame = cur->f->interlaced_frame;
1043
1044 if (cur->field_poc[0] != cur->field_poc[1]) {
1045 /* Derive top_field_first from field pocs. */
1046 cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1047 } else {
1048 if (cur->f->interlaced_frame || sps->pic_struct_present_flag) {
1049 /* Use picture timing SEI information. Even if it is a
1050 * information of a past frame, better than nothing. */
1051 if (h->sei.picture_timing.pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
1052 h->sei.picture_timing.pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1053 cur->f->top_field_first = 1;
1054 else
1055 cur->f->top_field_first = 0;
1056 } else {
1057 /* Most likely progressive */
1058 cur->f->top_field_first = 0;
1059 }
1060 }
1061
1062 if (h->sei.frame_packing.present &&
1063 h->sei.frame_packing.arrangement_type >= 0 &&
1064 h->sei.frame_packing.arrangement_type <= 6 &&
1065 h->sei.frame_packing.content_interpretation_type > 0 &&
1066 h->sei.frame_packing.content_interpretation_type < 3) {
1067 H264SEIFramePacking *fp = &h->sei.frame_packing;
1068 AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
1069 if (!stereo)
1070 return AVERROR(ENOMEM);
1071
1072 switch (fp->arrangement_type) {
1073 case 0:
1074 stereo->type = AV_STEREO3D_CHECKERBOARD;
1075 break;
1076 case 1:
1077 stereo->type = AV_STEREO3D_COLUMNS;
1078 break;
1079 case 2:
1080 stereo->type = AV_STEREO3D_LINES;
1081 break;
1082 case 3:
1083 if (fp->quincunx_subsampling)
1084 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1085 else
1086 stereo->type = AV_STEREO3D_SIDEBYSIDE;
1087 break;
1088 case 4:
1089 stereo->type = AV_STEREO3D_TOPBOTTOM;
1090 break;
1091 case 5:
1092 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1093 break;
1094 case 6:
1095 stereo->type = AV_STEREO3D_2D;
1096 break;
1097 }
1098
1099 if (fp->content_interpretation_type == 2)
1100 stereo->flags = AV_STEREO3D_FLAG_INVERT;
1101 }
1102
1103 if (h->sei.display_orientation.present &&
1104 (h->sei.display_orientation.anticlockwise_rotation ||
1105 h->sei.display_orientation.hflip ||
1106 h->sei.display_orientation.vflip)) {
1107 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1108 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1109 AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
1110 AV_FRAME_DATA_DISPLAYMATRIX,
1111 sizeof(int32_t) * 9);
1112 if (!rotation)
1113 return AVERROR(ENOMEM);
1114
1115 av_display_rotation_set((int32_t *)rotation->data, angle);
1116 av_display_matrix_flip((int32_t *)rotation->data,
1117 o->hflip, o->vflip);
1118 }
1119
1120 if (h->sei.afd.present) {
1121 AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
1122 sizeof(uint8_t));
1123 if (!sd)
1124 return AVERROR(ENOMEM);
1125
1126 *sd->data = h->sei.afd.active_format_description;
1127 h->sei.afd.present = 0;
1128 }
1129
1130 if (h->sei.a53_caption.a53_caption) {
1131 H264SEIA53Caption *a53 = &h->sei.a53_caption;
1132 AVFrameSideData *sd = av_frame_new_side_data(cur->f,
1133 AV_FRAME_DATA_A53_CC,
1134 a53->a53_caption_size);
1135 if (!sd)
1136 return AVERROR(ENOMEM);
1137
1138 memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
1139 av_freep(&a53->a53_caption);
1140 a53->a53_caption_size = 0;
1141 }
1142
1143 return 0;
1144}
1145
3fba16ec
AK
1146/* This function is called right after decoding the slice header for a first
1147 * slice in a field (or a frame). It decides whether we are decoding a new frame
1148 * or a second field in a pair and does the necessary setup.
1149 */
b25cd754
AK
1150static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1151 const H2645NAL *nal)
3fba16ec 1152{
61f168ae 1153 const SPS *sps;
3fba16ec
AK
1154
1155 int last_pic_structure, last_pic_droppable, ret;
1156
61f168ae
AK
1157 ret = h264_init_ps(h, sl);
1158 if (ret < 0)
1159 return ret;
1160
1161 sps = h->ps.sps;
1162
3fba16ec
AK
1163 last_pic_droppable = h->droppable;
1164 last_pic_structure = h->picture_structure;
b25cd754 1165 h->droppable = (nal->ref_idc == 0);
3fba16ec
AK
1166 h->picture_structure = sl->picture_structure;
1167
f966498e
AK
1168 h->poc.frame_num = sl->frame_num;
1169 h->poc.poc_lsb = sl->poc_lsb;
1170 h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1171 h->poc.delta_poc[0] = sl->delta_poc[0];
1172 h->poc.delta_poc[1] = sl->delta_poc[1];
1173
3fba16ec
AK
1174 /* Shorten frame num gaps so we don't have to allocate reference
1175 * frames just to throw them away */
1176 if (h->poc.frame_num != h->poc.prev_frame_num) {
1177 int unwrap_prev_frame_num = h->poc.prev_frame_num;
1178 int max_frame_num = 1 << sps->log2_max_frame_num;
1179
1180 if (unwrap_prev_frame_num > h->poc.frame_num)
1181 unwrap_prev_frame_num -= max_frame_num;
1182
1183 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1184 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1185 if (unwrap_prev_frame_num < 0)
1186 unwrap_prev_frame_num += max_frame_num;
1187
1188 h->poc.prev_frame_num = unwrap_prev_frame_num;
1189 }
1190 }
1191
1192 /* See if we have a decoded first field looking for a pair...
1193 * Here, we're using that to see if we should mark previously
1194 * decode frames as "finished".
1195 * We have to do that before the "dummy" in-between frame allocation,
1196 * since that can modify s->current_picture_ptr. */
1197 if (h->first_field) {
1198 assert(h->cur_pic_ptr);
1199 assert(h->cur_pic_ptr->f->buf[0]);
1200 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1201
1202 /* figure out if we have a complementary field pair */
1203 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1204 /* Previous field is unmatched. Don't display it, but let it
1205 * remain for reference if marked as such. */
1206 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
1207 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1208 last_pic_structure == PICT_TOP_FIELD);
1209 }
1210 } else {
1211 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1212 /* This and previous field were reference, but had
1213 * different frame_nums. Consider this field first in
1214 * pair. Throw away previous field except for reference
1215 * purposes. */
1216 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
1217 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1218 last_pic_structure == PICT_TOP_FIELD);
1219 }
1220 } else {
1221 /* Second field in complementary pair */
1222 if (!((last_pic_structure == PICT_TOP_FIELD &&
1223 h->picture_structure == PICT_BOTTOM_FIELD) ||
1224 (last_pic_structure == PICT_BOTTOM_FIELD &&
1225 h->picture_structure == PICT_TOP_FIELD))) {
1226 av_log(h->avctx, AV_LOG_ERROR,
1227 "Invalid field mode combination %d/%d\n",
1228 last_pic_structure, h->picture_structure);
1229 h->picture_structure = last_pic_structure;
1230 h->droppable = last_pic_droppable;
1231 return AVERROR_INVALIDDATA;
1232 } else if (last_pic_droppable != h->droppable) {
1233 avpriv_request_sample(h->avctx,
1234 "Found reference and non-reference fields in the same frame, which");
1235 h->picture_structure = last_pic_structure;
1236 h->droppable = last_pic_droppable;
1237 return AVERROR_PATCHWELCOME;
1238 }
1239 }
1240 }
1241 }
1242
1243 while (h->poc.frame_num != h->poc.prev_frame_num &&
1244 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1245 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1246 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1247 h->poc.frame_num, h->poc.prev_frame_num);
1248 ret = initialize_cur_frame(h);
1249 if (ret < 0) {
1250 h->first_field = 0;
1251 return ret;
1252 }
1253
1254 h->poc.prev_frame_num++;
1255 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1256 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1257 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1258 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1259
1260 h->explicit_ref_marking = 0;
1261 ret = ff_h264_execute_ref_pic_marking(h);
1262 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1263 return ret;
1264 /* Error concealment: If a ref is missing, copy the previous ref
1265 * in its place.
1266 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1267 * many assumptions about there being no actual duplicates.
1268 * FIXME: This does not copy padding for out-of-frame motion
1269 * vectors. Given we are concealing a lost frame, this probably
1270 * is not noticeable by comparison, but it should be fixed. */
1271 if (h->short_ref_count) {
1272 if (prev &&
1273 h->short_ref[0]->f->width == prev->f->width &&
1274 h->short_ref[0]->f->height == prev->f->height &&
1275 h->short_ref[0]->f->format == prev->f->format) {
1276 av_image_copy(h->short_ref[0]->f->data,
1277 h->short_ref[0]->f->linesize,
1278 (const uint8_t **)prev->f->data,
1279 prev->f->linesize,
1280 prev->f->format,
1281 h->mb_width * 16,
1282 h->mb_height * 16);
1283 h->short_ref[0]->poc = prev->poc + 2;
1284 }
1285 h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1286 }
1287 }
1288
1289 /* See if we have a decoded first field looking for a pair...
1290 * We're using that to see whether to continue decoding in that
1291 * frame, or to allocate a new one. */
1292 if (h->first_field) {
1293 assert(h->cur_pic_ptr);
1294 assert(h->cur_pic_ptr->f->buf[0]);
1295 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1296
1297 /* figure out if we have a complementary field pair */
1298 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1299 /* Previous field is unmatched. Don't display it, but let it
1300 * remain for reference if marked as such. */
1301 h->cur_pic_ptr = NULL;
1302 h->first_field = FIELD_PICTURE(h);
1303 } else {
1304 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1305 /* This and the previous field had different frame_nums.
1306 * Consider this field first in pair. Throw away previous
1307 * one except for reference purposes. */
1308 h->first_field = 1;
1309 h->cur_pic_ptr = NULL;
1310 } else {
1311 /* Second field in complementary pair */
1312 h->first_field = 0;
1313 }
1314 }
1315 } else {
1316 /* Frame or first field in a potentially complementary pair */
1317 h->first_field = FIELD_PICTURE(h);
1318 }
1319
1320 if (!FIELD_PICTURE(h) || h->first_field) {
1321 if (h264_frame_start(h) < 0) {
1322 h->first_field = 0;
1323 return AVERROR_INVALIDDATA;
1324 }
1325 } else {
1326 release_unused_pictures(h, 0);
1327 }
1328
bcd91f16
AK
1329 ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
1330 h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1331
1332 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1333 h->nb_mmco = sl->nb_mmco;
1334 h->explicit_ref_marking = sl->explicit_ref_marking;
1335
d1d76780
AK
1336 h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1337
58640fe8
AK
1338 if (h->sei.recovery_point.recovery_frame_cnt >= 0 && h->recovery_frame < 0) {
1339 h->recovery_frame = (h->poc.frame_num + h->sei.recovery_point.recovery_frame_cnt) &
1340 ((1 << h->ps.sps->log2_max_frame_num) - 1);
1341 }
1342
1343 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE) ||
1344 (h->sei.recovery_point.recovery_frame_cnt >= 0);
1345
1346 if (nal->type == H264_NAL_IDR_SLICE || h->recovery_frame == h->poc.frame_num) {
1347 h->recovery_frame = -1;
1348 h->cur_pic_ptr->recovered = 1;
1349 }
1350 // If we have an IDR, all frames after it in decoded order are
1351 // "recovered".
1352 if (nal->type == H264_NAL_IDR_SLICE)
1353 h->frame_recovered |= FRAME_RECOVERED_IDR;
1354 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1355
f651c6a2
AK
1356 /* Set the frame properties/side data. Only done for the second field in
1357 * field coded frames, since some SEI information is present for each field
1358 * and is merged by the SEI parsing code. */
1359 if (!FIELD_PICTURE(h) || !h->first_field) {
1360 ret = h264_export_frame_props(h);
1361 if (ret < 0)
1362 return ret;
1363 }
1364
606fb6c0
AK
1365 if (h->avctx->hwaccel) {
1366 ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0);
1367 if (ret < 0)
1368 return ret;
1369 }
1370
3fba16ec
AK
1371 return 0;
1372}
1373
b13fc1e3
AK
1374static int h264_slice_header_parse(H264SliceContext *sl, const H2645NAL *nal,
1375 const H264ParamSets *ps, AVCodecContext *avctx)
f51d0f39 1376{
3176217c
AK
1377 const SPS *sps;
1378 const PPS *pps;
f51d0f39 1379 int ret;
d06e4d8a 1380 unsigned int slice_type, tmp, i;
3c84eaae 1381 int field_pic_flag, bottom_field_flag, picture_structure;
f51d0f39 1382
7ab5d577 1383 sl->first_mb_addr = get_ue_golomb(&sl->gb);
f51d0f39 1384
f42485db 1385 slice_type = get_ue_golomb_31(&sl->gb);
f51d0f39 1386 if (slice_type > 9) {
b13fc1e3 1387 av_log(avctx, AV_LOG_ERROR,
d4d9068c 1388 "slice type %d too large at %d\n",
7ab5d577 1389 slice_type, sl->first_mb_addr);
f51d0f39
LB
1390 return AVERROR_INVALIDDATA;
1391 }
1392 if (slice_type > 4) {
1393 slice_type -= 5;
56febc99 1394 sl->slice_type_fixed = 1;
f51d0f39 1395 } else
56febc99 1396 sl->slice_type_fixed = 0;
f51d0f39 1397
a7da517f 1398 slice_type = ff_h264_golomb_to_pict_type[slice_type];
56febc99
AK
1399 sl->slice_type = slice_type;
1400 sl->slice_type_nos = slice_type & 3;
f51d0f39 1401
5c2fb561 1402 if (nal->type == H264_NAL_IDR_SLICE &&
56febc99 1403 sl->slice_type_nos != AV_PICTURE_TYPE_I) {
b13fc1e3 1404 av_log(avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
f51d0f39
LB
1405 return AVERROR_INVALIDDATA;
1406 }
1407
61f168ae
AK
1408 sl->pps_id = get_ue_golomb(&sl->gb);
1409 if (sl->pps_id >= MAX_PPS_COUNT) {
b13fc1e3 1410 av_log(avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
f51d0f39
LB
1411 return AVERROR_INVALIDDATA;
1412 }
b13fc1e3
AK
1413 if (!ps->pps_list[sl->pps_id]) {
1414 av_log(avctx, AV_LOG_ERROR,
f51d0f39 1415 "non-existing PPS %u referenced\n",
61f168ae 1416 sl->pps_id);
f51d0f39
LB
1417 return AVERROR_INVALIDDATA;
1418 }
b13fc1e3 1419 pps = (const PPS*)ps->pps_list[sl->pps_id]->data;
f51d0f39 1420
b13fc1e3
AK
1421 if (!ps->sps_list[pps->sps_id]) {
1422 av_log(avctx, AV_LOG_ERROR,
61f168ae 1423 "non-existing SPS %u referenced\n", pps->sps_id);
f51d0f39
LB
1424 return AVERROR_INVALIDDATA;
1425 }
b13fc1e3 1426 sps = (const SPS*)ps->sps_list[pps->sps_id]->data;
f51d0f39 1427
f966498e 1428 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
f51d0f39 1429
e9b2383b 1430 sl->mb_mbaff = 0;
5ec0bdf2 1431
3176217c 1432 if (sps->frame_mbs_only_flag) {
5ec0bdf2 1433 picture_structure = PICT_FRAME;
f51d0f39 1434 } else {
f42485db 1435 field_pic_flag = get_bits1(&sl->gb);
f51d0f39 1436 if (field_pic_flag) {
f42485db 1437 bottom_field_flag = get_bits1(&sl->gb);
5ec0bdf2 1438 picture_structure = PICT_TOP_FIELD + bottom_field_flag;
f51d0f39 1439 } else {
5ec0bdf2 1440 picture_structure = PICT_FRAME;
f51d0f39
LB
1441 }
1442 }
3fba16ec
AK
1443 sl->picture_structure = picture_structure;
1444 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
f51d0f39 1445
3fba16ec 1446 if (picture_structure == PICT_FRAME) {
debca908
AK
1447 sl->curr_pic_num = sl->frame_num;
1448 sl->max_pic_num = 1 << sps->log2_max_frame_num;
f51d0f39 1449 } else {
debca908
AK
1450 sl->curr_pic_num = 2 * sl->frame_num + 1;
1451 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
f51d0f39
LB
1452 }
1453
5c2fb561 1454 if (nal->type == H264_NAL_IDR_SLICE)
f42485db 1455 get_ue_golomb(&sl->gb); /* idr_pic_id */
f51d0f39 1456
3176217c 1457 if (sps->poc_type == 0) {
f966498e 1458 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
5ec0bdf2 1459
f966498e
AK
1460 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1461 sl->delta_poc_bottom = get_se_golomb(&sl->gb);
f51d0f39
LB
1462 }
1463
3176217c 1464 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
f966498e 1465 sl->delta_poc[0] = get_se_golomb(&sl->gb);
f51d0f39 1466
f966498e
AK
1467 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1468 sl->delta_poc[1] = get_se_golomb(&sl->gb);
f51d0f39
LB
1469 }
1470
6efc4638 1471 sl->redundant_pic_count = 0;
3176217c 1472 if (pps->redundant_pic_cnt_present)
f42485db 1473 sl->redundant_pic_count = get_ue_golomb(&sl->gb);
f51d0f39 1474
e9f88441
AK
1475 if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1476 sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1477
a6e27f7a 1478 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
3176217c 1479 &sl->gb, pps, sl->slice_type_nos,
3fba16ec 1480 picture_structure);
f51d0f39
LB
1481 if (ret < 0)
1482 return ret;
f51d0f39 1483
56febc99 1484 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
b13fc1e3 1485 ret = ff_h264_decode_ref_pic_list_reordering(sl, avctx);
f51d0f39 1486 if (ret < 0) {
95eb35f3 1487 sl->ref_count[1] = sl->ref_count[0] = 0;
f51d0f39
LB
1488 return ret;
1489 }
1490 }
1491
0bad2543
AK
1492 sl->pwt.use_weight = 0;
1493 for (i = 0; i < 2; i++) {
1494 sl->pwt.luma_weight_flag[i] = 0;
1495 sl->pwt.chroma_weight_flag[i] = 0;
1496 }
3176217c
AK
1497 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1498 (pps->weighted_bipred_idc == 1 &&
56febc99 1499 sl->slice_type_nos == AV_PICTURE_TYPE_B))
3176217c 1500 ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
e481458b 1501 sl->slice_type_nos, &sl->pwt);
f51d0f39 1502
bec99338 1503 sl->explicit_ref_marking = 0;
b25cd754 1504 if (nal->ref_idc) {
b13fc1e3
AK
1505 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, avctx);
1506 if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
f51d0f39
LB
1507 return AVERROR_INVALIDDATA;
1508 }
1509
3176217c 1510 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
f42485db 1511 tmp = get_ue_golomb_31(&sl->gb);
f51d0f39 1512 if (tmp > 2) {
b13fc1e3 1513 av_log(avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
f51d0f39
LB
1514 return AVERROR_INVALIDDATA;
1515 }
a9b201ca 1516 sl->cabac_init_idc = tmp;
f51d0f39
LB
1517 }
1518
5c8280c3 1519 sl->last_qscale_diff = 0;
3176217c
AK
1520 tmp = pps->init_qp + get_se_golomb(&sl->gb);
1521 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
b13fc1e3 1522 av_log(avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
f51d0f39
LB
1523 return AVERROR_INVALIDDATA;
1524 }
d231e84b 1525 sl->qscale = tmp;
6e92181b
AK
1526 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1527 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
f51d0f39 1528 // FIXME qscale / qp ... stuff
56febc99 1529 if (sl->slice_type == AV_PICTURE_TYPE_SP)
f42485db 1530 get_bits1(&sl->gb); /* sp_for_switch_flag */
56febc99
AK
1531 if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1532 sl->slice_type == AV_PICTURE_TYPE_SI)
f42485db 1533 get_se_golomb(&sl->gb); /* slice_qs_delta */
f51d0f39 1534
e6c90ce9
AK
1535 sl->deblocking_filter = 1;
1536 sl->slice_alpha_c0_offset = 0;
1537 sl->slice_beta_offset = 0;
3176217c 1538 if (pps->deblocking_filter_parameters_present) {
f42485db 1539 tmp = get_ue_golomb_31(&sl->gb);
f51d0f39 1540 if (tmp > 2) {
b13fc1e3 1541 av_log(avctx, AV_LOG_ERROR,
f51d0f39
LB
1542 "deblocking_filter_idc %u out of range\n", tmp);
1543 return AVERROR_INVALIDDATA;
1544 }
e6c90ce9
AK
1545 sl->deblocking_filter = tmp;
1546 if (sl->deblocking_filter < 2)
1547 sl->deblocking_filter ^= 1; // 1<->0
1548
1549 if (sl->deblocking_filter) {
f42485db
AK
1550 sl->slice_alpha_c0_offset = get_se_golomb(&sl->gb) * 2;
1551 sl->slice_beta_offset = get_se_golomb(&sl->gb) * 2;
e6c90ce9
AK
1552 if (sl->slice_alpha_c0_offset > 12 ||
1553 sl->slice_alpha_c0_offset < -12 ||
1554 sl->slice_beta_offset > 12 ||
1555 sl->slice_beta_offset < -12) {
b13fc1e3 1556 av_log(avctx, AV_LOG_ERROR,
f51d0f39 1557 "deblocking filter parameters %d %d out of range\n",
e6c90ce9 1558 sl->slice_alpha_c0_offset, sl->slice_beta_offset);
f51d0f39
LB
1559 return AVERROR_INVALIDDATA;
1560 }
1561 }
1562 }
1563
d06e4d8a
AK
1564 return 0;
1565}
1566
1567/**
1568 * Decode a slice header.
1569 * This will (re)initialize the decoder and call h264_frame_start() as needed.
1570 *
1571 * @param h h264context
1572 *
1573 * @return 0 if okay, <0 if an error occurred
1574 */
b25cd754
AK
1575int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl,
1576 const H2645NAL *nal)
d06e4d8a
AK
1577{
1578 int i, j, ret = 0;
1579
b13fc1e3 1580 ret = h264_slice_header_parse(sl, nal, &h->ps, h->avctx);
d06e4d8a
AK
1581 if (ret < 0)
1582 return ret;
1583
e26c6414
AK
1584 // discard redundant pictures
1585 if (sl->redundant_pic_count > 0)
1586 return 0;
1587
17e7c03e
AK
1588 if (!h->setup_finished) {
1589 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
1590 if (h->current_slice && h->cur_pic_ptr && FIELD_PICTURE(h)) {
1591 ff_h264_field_end(h, sl, 1);
1592 }
8d36932c 1593
17e7c03e
AK
1594 h->current_slice = 0;
1595 if (!h->first_field) {
1596 if (h->cur_pic_ptr && !h->droppable) {
1597 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1598 h->picture_structure == PICT_BOTTOM_FIELD);
1599 }
1600 h->cur_pic_ptr = NULL;
8d36932c 1601 }
17e7c03e
AK
1602 }
1603
1604 if (h->current_slice == 0) {
1605 ret = h264_field_start(h, sl, nal);
1606 if (ret < 0)
1607 return ret;
8d36932c
AK
1608 }
1609 }
1610
17e7c03e 1611 if (h->current_slice > 0) {
8d36932c
AK
1612 if (h->ps.pps != (const PPS*)h->ps.pps_list[sl->pps_id]->data) {
1613 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
1614 return AVERROR_INVALIDDATA;
1615 }
1616
1617 if (h->picture_structure != sl->picture_structure ||
1618 h->droppable != (nal->ref_idc == 0)) {
1619 av_log(h->avctx, AV_LOG_ERROR,
1620 "Changing field mode (%d -> %d) between slices is not allowed\n",
1621 h->picture_structure, sl->picture_structure);
1622 return AVERROR_INVALIDDATA;
1623 } else if (!h->cur_pic_ptr) {
1624 av_log(h->avctx, AV_LOG_ERROR,
1625 "unset cur_pic_ptr on slice %d\n",
1626 h->current_slice + 1);
1627 return AVERROR_INVALIDDATA;
1628 }
3fba16ec
AK
1629 }
1630
d1d76780
AK
1631 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1632 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1633 return AVERROR_INVALIDDATA;
1634 }
1635
7ab5d577
AK
1636 assert(h->mb_num == h->mb_width * h->mb_height);
1637 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1638 sl->first_mb_addr >= h->mb_num) {
1639 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1640 return AVERROR_INVALIDDATA;
1641 }
1642 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1643 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1644 FIELD_OR_MBAFF_PICTURE(h);
1645 if (h->picture_structure == PICT_BOTTOM_FIELD)
1646 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1647 assert(sl->mb_y < h->mb_height);
1648
6dd996c7
AK
1649 ret = ff_h264_build_ref_list(h, sl);
1650 if (ret < 0)
1651 return ret;
1652
0bad2543
AK
1653 if (h->ps.pps->weighted_bipred_idc == 2 &&
1654 sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1655 implicit_weight_table(h, sl, -1);
1656 if (FRAME_MBAFF(h)) {
1657 implicit_weight_table(h, sl, 0);
1658 implicit_weight_table(h, sl, 1);
1659 }
1660 }
1661
77a1e2c5
AK
1662 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
1663 ff_h264_direct_dist_scale_factor(h, sl);
1664 ff_h264_direct_ref_list_init(h, sl);
1665
f51d0f39
LB
1666 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1667 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
56febc99 1668 sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
f51d0f39 1669 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
56febc99 1670 sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
f51d0f39 1671 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
b25cd754 1672 nal->ref_idc == 0))
e6c90ce9 1673 sl->deblocking_filter = 0;
f51d0f39 1674
2e5bde95 1675 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
7c6eb0a1 1676 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
f51d0f39
LB
1677 /* Cheat slightly for speed:
1678 * Do not bother to deblock across slices. */
e6c90ce9 1679 sl->deblocking_filter = 2;
f51d0f39 1680 } else {
b77fffa1 1681 h->postpone_filter = 1;
f51d0f39
LB
1682 }
1683 }
06789ad3 1684 sl->qp_thresh = 15 -
e6c90ce9 1685 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
f51d0f39 1686 FFMAX3(0,
d06e4d8a
AK
1687 h->ps.pps->chroma_qp_index_offset[0],
1688 h->ps.pps->chroma_qp_index_offset[1]) +
1689 6 * (h->ps.sps->bit_depth_luma - 8);
f51d0f39 1690
51d8725a 1691 sl->slice_num = ++h->current_slice;
56febc99 1692 if (sl->slice_num >= MAX_SLICES) {
f51d0f39
LB
1693 av_log(h->avctx, AV_LOG_ERROR,
1694 "Too many slices, increase MAX_SLICES and recompile\n");
1695 }
1696
1697 for (j = 0; j < 2; j++) {
1698 int id_list[16];
b77fffa1 1699 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
f51d0f39
LB
1700 for (i = 0; i < 16; i++) {
1701 id_list[i] = 60;
95eb35f3 1702 if (j < sl->list_count && i < sl->ref_count[j] &&
a0f29460 1703 sl->ref_list[j][i].parent->f->buf[0]) {
f51d0f39 1704 int k;
a0f29460 1705 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
f51d0f39 1706 for (k = 0; k < h->short_ref_count; k++)
a0f29460 1707 if (h->short_ref[k]->f->buf[0]->buffer == buf) {
f51d0f39
LB
1708 id_list[i] = k;
1709 break;
1710 }
1711 for (k = 0; k < h->long_ref_count; k++)
a0f29460 1712 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
f51d0f39
LB
1713 id_list[i] = h->short_ref_count + k;
1714 break;
1715 }
1716 }
1717 }
1718
1719 ref2frm[0] =
1720 ref2frm[1] = -1;
1721 for (i = 0; i < 16; i++)
95eb35f3 1722 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
f51d0f39
LB
1723 ref2frm[18 + 0] =
1724 ref2frm[18 + 1] = -1;
1725 for (i = 16; i < 48; i++)
1726 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
95eb35f3 1727 (sl->ref_list[j][i].reference & 3);
f51d0f39
LB
1728 }
1729
1730 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
1731 av_log(h->avctx, AV_LOG_DEBUG,
d06e4d8a 1732 "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",
56febc99 1733 sl->slice_num,
f51d0f39 1734 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
d06e4d8a 1735 sl->mb_y * h->mb_width + sl->mb_x,
56febc99
AK
1736 av_get_picture_type_char(sl->slice_type),
1737 sl->slice_type_fixed ? " fix" : "",
5c2fb561 1738 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
d06e4d8a 1739 h->poc.frame_num,
f51d0f39
LB
1740 h->cur_pic_ptr->field_poc[0],
1741 h->cur_pic_ptr->field_poc[1],
95eb35f3 1742 sl->ref_count[0], sl->ref_count[1],
d231e84b 1743 sl->qscale,
e6c90ce9
AK
1744 sl->deblocking_filter,
1745 sl->slice_alpha_c0_offset, sl->slice_beta_offset,
e481458b
AK
1746 sl->pwt.use_weight,
1747 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
066aafce 1748 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
f51d0f39
LB
1749 }
1750
1751 return 0;
1752}
1753
56febc99 1754int ff_h264_get_slice_type(const H264SliceContext *sl)
f51d0f39 1755{
56febc99 1756 switch (sl->slice_type) {
f51d0f39
LB
1757 case AV_PICTURE_TYPE_P:
1758 return 0;
1759 case AV_PICTURE_TYPE_B:
1760 return 1;
1761 case AV_PICTURE_TYPE_I:
1762 return 2;
1763 case AV_PICTURE_TYPE_SP:
1764 return 3;
1765 case AV_PICTURE_TYPE_SI:
1766 return 4;
1767 default:
1768 return AVERROR_INVALIDDATA;
1769 }
1770}
1771
92e0b734 1772static av_always_inline void fill_filter_caches_inter(const H264Context *h,
e6287f07 1773 H264SliceContext *sl,
f51d0f39
LB
1774 int mb_type, int top_xy,
1775 int left_xy[LEFT_MBS],
1776 int top_type,
1777 int left_type[LEFT_MBS],
1778 int mb_xy, int list)
1779{
1780 int b_stride = h->b_stride;
e6287f07
AK
1781 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
1782 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
f51d0f39
LB
1783 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
1784 if (USES_LIST(top_type, list)) {
1785 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
1786 const int b8_xy = 4 * top_xy + 2;
996f1341 1787 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
f51d0f39
LB
1788 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
1789 ref_cache[0 - 1 * 8] =
996f1341 1790 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
f51d0f39 1791 ref_cache[2 - 1 * 8] =
996f1341 1792 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
f51d0f39
LB
1793 } else {
1794 AV_ZERO128(mv_dst - 1 * 8);
1795 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
1796 }
1797
1798 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
1799 if (USES_LIST(left_type[LTOP], list)) {
1800 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
1801 const int b8_xy = 4 * left_xy[LTOP] + 1;
996f1341 1802 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
f51d0f39
LB
1803 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
1804 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
1805 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
1806 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
1807 ref_cache[-1 + 0] =
996f1341 1808 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
f51d0f39 1809 ref_cache[-1 + 16] =
996f1341 1810 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
f51d0f39
LB
1811 } else {
1812 AV_ZERO32(mv_dst - 1 + 0);
1813 AV_ZERO32(mv_dst - 1 + 8);
1814 AV_ZERO32(mv_dst - 1 + 16);
1815 AV_ZERO32(mv_dst - 1 + 24);
1816 ref_cache[-1 + 0] =
1817 ref_cache[-1 + 8] =
1818 ref_cache[-1 + 16] =
1819 ref_cache[-1 + 24] = LIST_NOT_USED;
1820 }
1821 }
1822 }
1823
1824 if (!USES_LIST(mb_type, list)) {
1825 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
1826 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
1827 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
1828 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
1829 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
1830 return;
1831 }
1832
1833 {
1834 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
996f1341
AK
1835 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
1836 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
1837 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
f51d0f39
LB
1838 AV_WN32A(&ref_cache[0 * 8], ref01);
1839 AV_WN32A(&ref_cache[1 * 8], ref01);
1840 AV_WN32A(&ref_cache[2 * 8], ref23);
1841 AV_WN32A(&ref_cache[3 * 8], ref23);
1842 }
1843
1844 {
d4d9068c 1845 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
f51d0f39
LB
1846 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
1847 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
1848 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
1849 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
1850 }
1851}
1852
1853/**
f51d0f39
LB
1854 * @return non zero if the loop filter can be skipped
1855 */
92e0b734 1856static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
f51d0f39 1857{
0edbe6fa 1858 const int mb_xy = sl->mb_xy;
f51d0f39
LB
1859 int top_xy, left_xy[LEFT_MBS];
1860 int top_type, left_type[LEFT_MBS];
1861 uint8_t *nnz;
1862 uint8_t *nnz_cache;
1863
bc98e8c0 1864 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
f51d0f39 1865
f51d0f39
LB
1866 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
1867 if (FRAME_MBAFF(h)) {
1868 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
1869 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
d4d9068c 1870 if (sl->mb_y & 1) {
f51d0f39
LB
1871 if (left_mb_field_flag != curr_mb_field_flag)
1872 left_xy[LTOP] -= h->mb_stride;
1873 } else {
1874 if (curr_mb_field_flag)
1875 top_xy += h->mb_stride &
1876 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
1877 if (left_mb_field_flag != curr_mb_field_flag)
1878 left_xy[LBOT] += h->mb_stride;
1879 }
1880 }
1881
8b00f4df
AK
1882 sl->top_mb_xy = top_xy;
1883 sl->left_mb_xy[LTOP] = left_xy[LTOP];
1884 sl->left_mb_xy[LBOT] = left_xy[LBOT];
f51d0f39
LB
1885 {
1886 /* For sufficiently low qp, filtering wouldn't do anything.
1887 * This is a conservative estimate: could also check beta_offset
1888 * and more accurate chroma_qp. */
06789ad3 1889 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
f51d0f39
LB
1890 int qp = h->cur_pic.qscale_table[mb_xy];
1891 if (qp <= qp_thresh &&
1892 (left_xy[LTOP] < 0 ||
1893 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
1894 (top_xy < 0 ||
1895 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
1896 if (!FRAME_MBAFF(h))
1897 return 1;
1898 if ((left_xy[LTOP] < 0 ||
1899 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
1900 (top_xy < h->mb_stride ||
1901 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
1902 return 1;
1903 }
1904 }
1905
1906 top_type = h->cur_pic.mb_type[top_xy];
1907 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
1908 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
e6c90ce9 1909 if (sl->deblocking_filter == 2) {
56febc99 1910 if (h->slice_table[top_xy] != sl->slice_num)
f51d0f39 1911 top_type = 0;
56febc99 1912 if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
f51d0f39
LB
1913 left_type[LTOP] = left_type[LBOT] = 0;
1914 } else {
1915 if (h->slice_table[top_xy] == 0xFFFF)
1916 top_type = 0;
1917 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
1918 left_type[LTOP] = left_type[LBOT] = 0;
1919 }
8b00f4df
AK
1920 sl->top_type = top_type;
1921 sl->left_type[LTOP] = left_type[LTOP];
1922 sl->left_type[LBOT] = left_type[LBOT];
f51d0f39
LB
1923
1924 if (IS_INTRA(mb_type))
1925 return 0;
1926
e6287f07 1927 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
f51d0f39 1928 top_type, left_type, mb_xy, 0);
95eb35f3 1929 if (sl->list_count == 2)
e6287f07 1930 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
f51d0f39
LB
1931 top_type, left_type, mb_xy, 1);
1932
1933 nnz = h->non_zero_count[mb_xy];
f69574cf 1934 nnz_cache = sl->non_zero_count_cache;
f51d0f39
LB
1935 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
1936 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
1937 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
1938 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
e7226984 1939 sl->cbp = h->cbp_table[mb_xy];
f51d0f39
LB
1940
1941 if (top_type) {
1942 nnz = h->non_zero_count[top_xy];
1943 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
1944 }
1945
1946 if (left_type[LTOP]) {
1947 nnz = h->non_zero_count[left_xy[LTOP]];
1948 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
1949 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
1950 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
1951 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
1952 }
1953
1954 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
1955 * from what the loop filter needs */
3176217c 1956 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
f51d0f39
LB
1957 if (IS_8x8DCT(top_type)) {
1958 nnz_cache[4 + 8 * 0] =
1959 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
1960 nnz_cache[6 + 8 * 0] =
1961 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
1962 }
1963 if (IS_8x8DCT(left_type[LTOP])) {
1964 nnz_cache[3 + 8 * 1] =
1965 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
1966 }
1967 if (IS_8x8DCT(left_type[LBOT])) {
1968 nnz_cache[3 + 8 * 3] =
1969 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
1970 }
1971
1972 if (IS_8x8DCT(mb_type)) {
1973 nnz_cache[scan8[0]] =
1974 nnz_cache[scan8[1]] =
1975 nnz_cache[scan8[2]] =
e7226984 1976 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
f51d0f39
LB
1977
1978 nnz_cache[scan8[0 + 4]] =
1979 nnz_cache[scan8[1 + 4]] =
1980 nnz_cache[scan8[2 + 4]] =
e7226984 1981 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
f51d0f39
LB
1982
1983 nnz_cache[scan8[0 + 8]] =
1984 nnz_cache[scan8[1 + 8]] =
1985 nnz_cache[scan8[2 + 8]] =
e7226984 1986 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
f51d0f39
LB
1987
1988 nnz_cache[scan8[0 + 12]] =
1989 nnz_cache[scan8[1 + 12]] =
1990 nnz_cache[scan8[2 + 12]] =
e7226984 1991 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
f51d0f39
LB
1992 }
1993 }
1994
1995 return 0;
1996}
1997
92e0b734 1998static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
f51d0f39
LB
1999{
2000 uint8_t *dest_y, *dest_cb, *dest_cr;
2001 int linesize, uvlinesize, mb_x, mb_y;
d4d9068c 2002 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
56febc99 2003 const int old_slice_type = sl->slice_type;
f51d0f39
LB
2004 const int pixel_shift = h->pixel_shift;
2005 const int block_h = 16 >> h->chroma_y_shift;
2006
b77fffa1
AK
2007 if (h->postpone_filter)
2008 return;
2009
e6c90ce9 2010 if (sl->deblocking_filter) {
f51d0f39
LB
2011 for (mb_x = start_x; mb_x < end_x; mb_x++)
2012 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2013 int mb_xy, mb_type;
0edbe6fa 2014 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
f51d0f39 2015 mb_type = h->cur_pic.mb_type[mb_xy];
f51d0f39
LB
2016
2017 if (FRAME_MBAFF(h))
e9b2383b 2018 sl->mb_mbaff =
bc98e8c0 2019 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
f51d0f39 2020
d4d9068c
AK
2021 sl->mb_x = mb_x;
2022 sl->mb_y = mb_y;
a0f29460 2023 dest_y = h->cur_pic.f->data[0] +
c28ed1d7 2024 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
a0f29460 2025 dest_cb = h->cur_pic.f->data[1] +
f51d0f39 2026 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
c28ed1d7 2027 mb_y * sl->uvlinesize * block_h;
a0f29460 2028 dest_cr = h->cur_pic.f->data[2] +
f51d0f39 2029 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
c28ed1d7 2030 mb_y * sl->uvlinesize * block_h;
f51d0f39
LB
2031 // FIXME simplify above
2032
bc98e8c0 2033 if (MB_FIELD(sl)) {
c28ed1d7
AK
2034 linesize = sl->mb_linesize = sl->linesize * 2;
2035 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
f51d0f39 2036 if (mb_y & 1) { // FIXME move out of this function?
c28ed1d7
AK
2037 dest_y -= sl->linesize * 15;
2038 dest_cb -= sl->uvlinesize * (block_h - 1);
2039 dest_cr -= sl->uvlinesize * (block_h - 1);
f51d0f39
LB
2040 }
2041 } else {
c28ed1d7
AK
2042 linesize = sl->mb_linesize = sl->linesize;
2043 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
f51d0f39 2044 }
d4d9068c 2045 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
f51d0f39 2046 uvlinesize, 0);
06789ad3 2047 if (fill_filter_caches(h, sl, mb_type))
f51d0f39 2048 continue;
6e92181b
AK
2049 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2050 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
f51d0f39
LB
2051
2052 if (FRAME_MBAFF(h)) {
d231e84b 2053 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
f51d0f39
LB
2054 linesize, uvlinesize);
2055 } else {
d231e84b 2056 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
f51d0f39
LB
2057 dest_cr, linesize, uvlinesize);
2058 }
2059 }
2060 }
56febc99 2061 sl->slice_type = old_slice_type;
d4d9068c
AK
2062 sl->mb_x = end_x;
2063 sl->mb_y = end_mb_y - FRAME_MBAFF(h);
6e92181b
AK
2064 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2065 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
f51d0f39
LB
2066}
2067
92e0b734 2068static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
f51d0f39 2069{
d4d9068c 2070 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
56febc99 2071 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
f51d0f39 2072 h->cur_pic.mb_type[mb_xy - 1] :
56febc99 2073 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
f51d0f39 2074 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
e9b2383b 2075 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
f51d0f39
LB
2076}
2077
2078/**
2079 * Draw edges and report progress for the last MB row.
2080 */
92e0b734 2081static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
f51d0f39 2082{
d4d9068c 2083 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
f51d0f39
LB
2084 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2085 int height = 16 << FRAME_MBAFF(h);
2086 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2087
e6c90ce9 2088 if (sl->deblocking_filter) {
f51d0f39
LB
2089 if ((top + height) >= pic_height)
2090 height += deblock_border;
2091 top -= deblock_border;
2092 }
2093
2094 if (top >= pic_height || (top + height) < 0)
2095 return;
2096
2097 height = FFMIN(height, pic_height - top);
2098 if (top < 0) {
2099 height = top + height;
2100 top = 0;
2101 }
2102
95eb35f3 2103 ff_h264_draw_horiz_band(h, sl, top, height);
f51d0f39
LB
2104
2105 if (h->droppable)
2106 return;
2107
2108 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2109 h->picture_structure == PICT_BOTTOM_FIELD);
2110}
2111
582683b6 2112static void er_add_slice(H264SliceContext *sl,
95eb35f3 2113 int startx, int starty,
f51d0f39
LB
2114 int endx, int endy, int status)
2115{
2116#if CONFIG_ERROR_RESILIENCE
582683b6 2117 ERContext *er = &sl->er;
f51d0f39 2118
a4d34e21
AK
2119 if (!sl->h264->enable_er)
2120 return;
2121
95eb35f3 2122 er->ref_count = sl->ref_count[0];
f51d0f39
LB
2123 ff_er_add_slice(er, startx, starty, endx, endy, status);
2124#endif
2125}
2126
2127static int decode_slice(struct AVCodecContext *avctx, void *arg)
2128{
92c6c2a6 2129 H264SliceContext *sl = arg;
92e0b734 2130 const H264Context *h = sl->h264;
d4d9068c 2131 int lf_x_start = sl->mb_x;
b77fffa1 2132 int orig_deblock = sl->deblocking_filter;
36d04801
AK
2133 int ret;
2134
a0f29460
AK
2135 sl->linesize = h->cur_pic_ptr->f->linesize[0];
2136 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
c28ed1d7
AK
2137
2138 ret = alloc_scratch_buffers(sl, sl->linesize);
36d04801
AK
2139 if (ret < 0)
2140 return ret;
f51d0f39 2141
47a0d393 2142 sl->mb_skip_run = -1;
f51d0f39 2143
b77fffa1
AK
2144 if (h->postpone_filter)
2145 sl->deblocking_filter = 0;
2146
07c5ca55 2147 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
7c6eb0a1 2148 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
f51d0f39 2149
3176217c 2150 if (h->ps.pps->cabac) {
f51d0f39 2151 /* realign */
f42485db 2152 align_get_bits(&sl->gb);
f51d0f39
LB
2153
2154 /* init cabac */
30da98ad 2155 ff_init_cabac_decoder(&sl->cabac,
f42485db
AK
2156 sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2157 (get_bits_left(&sl->gb) + 7) / 8);
f51d0f39 2158
d231e84b 2159 ff_h264_init_cabac_states(h, sl);
f51d0f39
LB
2160
2161 for (;;) {
2162 // START_TIMER
e49e0f58
AK
2163 int ret, eos;
2164
2165 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2166 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2167 sl->next_slice_idx);
2168 return AVERROR_INVALIDDATA;
2169 }
2170
2171 ret = ff_h264_decode_mb_cabac(h, sl);
f51d0f39
LB
2172 // STOP_TIMER("decode_mb_cabac")
2173
2174 if (ret >= 0)
92c6c2a6 2175 ff_h264_hl_decode_mb(h, sl);
f51d0f39
LB
2176
2177 // FIXME optimal? or let mb_decode decode 16x32 ?
2178 if (ret >= 0 && FRAME_MBAFF(h)) {
d4d9068c 2179 sl->mb_y++;
f51d0f39 2180
d231e84b 2181 ret = ff_h264_decode_mb_cabac(h, sl);
f51d0f39
LB
2182
2183 if (ret >= 0)
92c6c2a6 2184 ff_h264_hl_decode_mb(h, sl);
d4d9068c 2185 sl->mb_y--;
f51d0f39 2186 }
30da98ad 2187 eos = get_cabac_terminate(&sl->cabac);
f51d0f39
LB
2188
2189 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
30da98ad 2190 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
582683b6 2191 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
d4d9068c
AK
2192 sl->mb_y, ER_MB_END);
2193 if (sl->mb_x >= lf_x_start)
2194 loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
b77fffa1 2195 goto finish;
f51d0f39 2196 }
30da98ad 2197 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
f51d0f39
LB
2198 av_log(h->avctx, AV_LOG_ERROR,
2199 "error while decoding MB %d %d, bytestream %td\n",
d4d9068c 2200 sl->mb_x, sl->mb_y,
30da98ad 2201 sl->cabac.bytestream_end - sl->cabac.bytestream);
582683b6 2202 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
d4d9068c 2203 sl->mb_y, ER_MB_ERROR);
f51d0f39
LB
2204 return AVERROR_INVALIDDATA;
2205 }
2206
d4d9068c
AK
2207 if (++sl->mb_x >= h->mb_width) {
2208 loop_filter(h, sl, lf_x_start, sl->mb_x);
2209 sl->mb_x = lf_x_start = 0;
95eb35f3 2210 decode_finish_row(h, sl);
d4d9068c 2211 ++sl->mb_y;
f51d0f39 2212 if (FIELD_OR_MBAFF_PICTURE(h)) {
d4d9068c
AK
2213 ++sl->mb_y;
2214 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
56febc99 2215 predict_field_decoding_flag(h, sl);
f51d0f39
LB
2216 }
2217 }
2218
d4d9068c 2219 if (eos || sl->mb_y >= h->mb_height) {
6a85dfc8 2220 ff_tlog(h->avctx, "slice end %d %d\n",
f42485db 2221 get_bits_count(&sl->gb), sl->gb.size_in_bits);
582683b6 2222 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
d4d9068c
AK
2223 sl->mb_y, ER_MB_END);
2224 if (sl->mb_x > lf_x_start)
2225 loop_filter(h, sl, lf_x_start, sl->mb_x);
b77fffa1 2226 goto finish;
f51d0f39
LB
2227 }
2228 }
2229 } else {
2230 for (;;) {
e49e0f58
AK
2231 int ret;
2232
2233 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2234 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2235 sl->next_slice_idx);
2236 return AVERROR_INVALIDDATA;
2237 }
2238
2239 ret = ff_h264_decode_mb_cavlc(h, sl);
f51d0f39
LB
2240
2241 if (ret >= 0)
92c6c2a6 2242 ff_h264_hl_decode_mb(h, sl);
f51d0f39
LB
2243
2244 // FIXME optimal? or let mb_decode decode 16x32 ?
2245 if (ret >= 0 && FRAME_MBAFF(h)) {
d4d9068c 2246 sl->mb_y++;
d231e84b 2247 ret = ff_h264_decode_mb_cavlc(h, sl);
f51d0f39
LB
2248
2249 if (ret >= 0)
92c6c2a6 2250 ff_h264_hl_decode_mb(h, sl);
d4d9068c 2251 sl->mb_y--;
f51d0f39
LB
2252 }
2253
2254 if (ret < 0) {
2255 av_log(h->avctx, AV_LOG_ERROR,
d4d9068c 2256 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
582683b6 2257 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
d4d9068c 2258 sl->mb_y, ER_MB_ERROR);
f51d0f39
LB
2259 return ret;
2260 }
2261
d4d9068c
AK
2262 if (++sl->mb_x >= h->mb_width) {
2263 loop_filter(h, sl, lf_x_start, sl->mb_x);
2264 sl->mb_x = lf_x_start = 0;
95eb35f3 2265 decode_finish_row(h, sl);
d4d9068c 2266 ++sl->mb_y;
f51d0f39 2267 if (FIELD_OR_MBAFF_PICTURE(h)) {
d4d9068c
AK
2268 ++sl->mb_y;
2269 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
56febc99 2270 predict_field_decoding_flag(h, sl);
f51d0f39 2271 }
d4d9068c 2272 if (sl->mb_y >= h->mb_height) {
6a85dfc8 2273 ff_tlog(h->avctx, "slice end %d %d\n",
f42485db 2274 get_bits_count(&sl->gb), sl->gb.size_in_bits);
f51d0f39 2275
f42485db 2276 if (get_bits_left(&sl->gb) == 0) {
582683b6 2277 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
d4d9068c 2278 sl->mb_x - 1, sl->mb_y, ER_MB_END);
f51d0f39 2279
b77fffa1 2280 goto finish;
f51d0f39 2281 } else {
582683b6 2282 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
d4d9068c 2283 sl->mb_x - 1, sl->mb_y, ER_MB_END);
f51d0f39
LB
2284
2285 return AVERROR_INVALIDDATA;
2286 }
2287 }
2288 }
2289
f42485db 2290 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
6a85dfc8 2291 ff_tlog(h->avctx, "slice end %d %d\n",
f42485db 2292 get_bits_count(&sl->gb), sl->gb.size_in_bits);
f51d0f39 2293
f42485db 2294 if (get_bits_left(&sl->gb) == 0) {
582683b6 2295 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
d4d9068c
AK
2296 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2297 if (sl->mb_x > lf_x_start)
2298 loop_filter(h, sl, lf_x_start, sl->mb_x);
f51d0f39 2299
b77fffa1 2300 goto finish;
f51d0f39 2301 } else {
582683b6 2302 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
d4d9068c 2303 sl->mb_y, ER_MB_ERROR);
f51d0f39
LB
2304
2305 return AVERROR_INVALIDDATA;
2306 }
2307 }
2308 }
2309 }
b77fffa1
AK
2310
2311finish:
2312 sl->deblocking_filter = orig_deblock;
2313 return 0;
f51d0f39
LB
2314}
2315
2316/**
2317 * Call decode_slice() for each context.
2318 *
2319 * @param h h264 master context
2320 * @param context_count number of contexts to execute
2321 */
2322int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
2323{
2324 AVCodecContext *const avctx = h->avctx;
d4d9068c 2325 H264SliceContext *sl;
e49e0f58 2326 int i, j;
f51d0f39 2327
f51d0f39
LB
2328 if (h->avctx->hwaccel)
2329 return 0;
2330 if (context_count == 1) {
e49e0f58
AK
2331 int ret;
2332
2333 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
b77fffa1 2334 h->postpone_filter = 0;
e49e0f58
AK
2335
2336 ret = decode_slice(avctx, &h->slice_ctx[0]);
d4d9068c
AK
2337 h->mb_y = h->slice_ctx[0].mb_y;
2338 return ret;
f51d0f39 2339 } else {
e49e0f58
AK
2340 for (i = 0; i < context_count; i++) {
2341 int next_slice_idx = h->mb_width * h->mb_height;
2342 int slice_idx;
2343
582683b6
AK
2344 sl = &h->slice_ctx[i];
2345 sl->er.error_count = 0;
e49e0f58
AK
2346
2347 /* make sure none of those slices overlap */
2348 slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2349 for (j = 0; j < context_count; j++) {
2350 H264SliceContext *sl2 = &h->slice_ctx[j];
2351 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2352
2353 if (i == j || slice_idx2 < slice_idx)
2354 continue;
2355 next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2356 }
2357 sl->next_slice_idx = next_slice_idx;
f51d0f39
LB
2358 }
2359
92c6c2a6
AK
2360 avctx->execute(avctx, decode_slice, h->slice_ctx,
2361 NULL, context_count, sizeof(h->slice_ctx[0]));
f51d0f39
LB
2362
2363 /* pull back stuff from slices to master context */
d4d9068c
AK
2364 sl = &h->slice_ctx[context_count - 1];
2365 h->mb_y = sl->mb_y;
f51d0f39 2366 for (i = 1; i < context_count; i++)
582683b6 2367 h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
b77fffa1
AK
2368
2369 if (h->postpone_filter) {
2370 h->postpone_filter = 0;
2371
2372 for (i = 0; i < context_count; i++) {
2373 int y_end, x_end;
2374
2375 sl = &h->slice_ctx[i];
2376 y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2377 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2378
2379 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2380 sl->mb_y = j;
2381 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2382 j == y_end - 1 ? x_end : h->mb_width);
2383 }
2384 }
2385 }
f51d0f39
LB
2386 }
2387
2388 return 0;
2389}