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h264: check that execute_decode_slices() is not called too many times
[libav.git] / libavcodec / h264.c
CommitLineData
0da71265 1/*
ff3d4310 2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
0da71265
MN		 3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
0da71265
MN		 8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
0da71265 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
0da71265
MN		 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
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
0da71265 20 */
115329f1 21
0da71265 22/**
ba87f080 23 * @file
0da71265
MN		 24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
16c22122 28#include "libavutil/avassert.h"
737eb597 29#include "libavutil/imgutils.h"
5b10ef72 30#include "libavutil/stereo3d.h"
40e5d31b 31#include "internal.h"
55b9ef18
DB		 32#include "cabac.h"
33#include "cabac_functions.h"
0da71265 34#include "dsputil.h"
5f401b7b 35#include "error_resilience.h"
0da71265
MN		 36#include "avcodec.h"
37#include "mpegvideo.h"
26b4fe82 38#include "h264.h"
0da71265 39#include "h264data.h"
79dad2a9 40#include "h264chroma.h"
188d3c51 41#include "h264_mvpred.h"
0da71265 42#include "golomb.h"
199436b9 43#include "mathops.h"
626464fb 44#include "rectangle.h"
75d5156a 45#include "svq3.h"
6a9c8594 46#include "thread.h"
0da71265 47
0da71265
MN		 48#include <assert.h>
49
0becb078
DB		 50const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
51
e5d40372
DB		 52static const uint8_t rem6[QP_MAX_NUM + 1] = {
53 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
54 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
55 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
acd8d10f
PI		 56};
57
e5d40372
DB		 58static const uint8_t div6[QP_MAX_NUM + 1] = {
59 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
60 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
61 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
acd8d10f
PI		 62};
63
c4e43560
DB		 64static const uint8_t field_scan[16] = {
65 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
66 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
67 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
68 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
69};
70
71static const uint8_t field_scan8x8[64] = {
72 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
73 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
74 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
75 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
76 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
77 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
78 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
79 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
80 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
81 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
82 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
83 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
84 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
85 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
86 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
87 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
88};
89
90static const uint8_t field_scan8x8_cavlc[64] = {
91 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
92 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
93 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
94 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
95 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
96 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
97 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
98 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
99 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
100 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
101 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
102 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
103 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
104 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
105 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
106 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
107};
108
109// zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
110static const uint8_t zigzag_scan8x8_cavlc[64] = {
111 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
112 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
113 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
114 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
115 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
116 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
117 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
118 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
119 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
120 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
121 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
122 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
123 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
124 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
125 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
126 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
127};
128
129static const uint8_t dequant4_coeff_init[6][3] = {
130 { 10, 13, 16 },
131 { 11, 14, 18 },
132 { 13, 16, 20 },
133 { 14, 18, 23 },
134 { 16, 20, 25 },
135 { 18, 23, 29 },
136};
137
138static const uint8_t dequant8_coeff_init_scan[16] = {
139 0, 3, 4, 3, 3, 1, 5, 1, 4, 5, 2, 5, 3, 1, 5, 1
140};
141
142static const uint8_t dequant8_coeff_init[6][6] = {
143 { 20, 18, 32, 19, 25, 24 },
144 { 22, 19, 35, 21, 28, 26 },
145 { 26, 23, 42, 24, 33, 31 },
146 { 28, 25, 45, 26, 35, 33 },
147 { 32, 28, 51, 30, 40, 38 },
148 { 36, 32, 58, 34, 46, 43 },
149};
150
8d061989
RB		 151static const enum AVPixelFormat h264_hwaccel_pixfmt_list_420[] = {
152#if CONFIG_H264_DXVA2_HWACCEL
153 AV_PIX_FMT_DXVA2_VLD,
154#endif
155#if CONFIG_H264_VAAPI_HWACCEL
156 AV_PIX_FMT_VAAPI_VLD,
157#endif
158#if CONFIG_H264_VDA_HWACCEL
159 AV_PIX_FMT_VDA_VLD,
160#endif
161#if CONFIG_H264_VDPAU_HWACCEL
162 AV_PIX_FMT_VDPAU,
163#endif
164 AV_PIX_FMT_YUV420P,
165 AV_PIX_FMT_NONE
166};
167
d65522e8 168static const enum AVPixelFormat h264_hwaccel_pixfmt_list_jpeg_420[] = {
78bc4d69 169#if CONFIG_H264_DXVA2_HWACCEL
716d413c 170 AV_PIX_FMT_DXVA2_VLD,
78bc4d69
RDC		 171#endif
172#if CONFIG_H264_VAAPI_HWACCEL
716d413c 173 AV_PIX_FMT_VAAPI_VLD,
78bc4d69
RDC		 174#endif
175#if CONFIG_H264_VDA_HWACCEL
716d413c 176 AV_PIX_FMT_VDA_VLD,
78bc4d69
RDC		 177#endif
178#if CONFIG_H264_VDPAU_HWACCEL
ec0e9200 179 AV_PIX_FMT_VDPAU,
78bc4d69 180#endif
716d413c
AK		 181 AV_PIX_FMT_YUVJ420P,
182 AV_PIX_FMT_NONE
0435fb16
BC		 183};
184
54974c62
AK		 185static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
186 int (*mv)[2][4][2],
187 int mb_x, int mb_y, int mb_intra, int mb_skipped)
188{
16c22122 189 H264Context *h = opaque;
54974c62 190
2c541554
AK		 191 h->mb_x = mb_x;
192 h->mb_y = mb_y;
193 h->mb_xy = mb_x + mb_y * h->mb_stride;
54974c62
AK		 194 memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache));
195 assert(ref >= 0);
196 /* FIXME: It is possible albeit uncommon that slice references
197 * differ between slices. We take the easy approach and ignore
198 * it for now. If this turns out to have any relevance in
199 * practice then correct remapping should be added. */
200 if (ref >= h->ref_count[0])
201 ref = 0;
759001c5 202 fill_rectangle(&h->cur_pic.ref_index[0][4 * h->mb_xy],
54974c62
AK		 203 2, 2, 2, ref, 1);
204 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
205 fill_rectangle(h->mv_cache[0][scan8[0]], 4, 4, 8,
2c541554 206 pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
7bece9b2 207 assert(!FRAME_MBAFF(h));
54974c62
AK		 208 ff_h264_hl_decode_mb(h);
209}
210
2c541554
AK		 211void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
212{
64e43869
RB		 213 AVCodecContext *avctx = h->avctx;
214 Picture *cur = &h->cur_pic;
215 Picture *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0] : NULL;
216 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
217 int vshift = desc->log2_chroma_h;
218 const int field_pic = h->picture_structure != PICT_FRAME;
219 if (field_pic) {
220 height <<= 1;
16c22122 221 y <<= 1;
64e43869
RB		 222 }
223
224 height = FFMIN(height, avctx->height - y);
225
226 if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
227 return;
228
229 if (avctx->draw_horiz_band) {
230 AVFrame *src;
231 int offset[AV_NUM_DATA_POINTERS];
232 int i;
233
234 if (cur->f.pict_type == AV_PICTURE_TYPE_B || h->low_delay ||
16c22122 235 (avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
64e43869
RB		 236 src = &cur->f;
237 else if (last)
238 src = &last->f;
239 else
240 return;
241
242 offset[0] = y * src->linesize[0];
243 offset[1] =
244 offset[2] = (y >> vshift) * src->linesize[1];
245 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
246 offset[i] = 0;
247
248 emms_c();
249
250 avctx->draw_horiz_band(avctx, src, offset,
251 y, h->picture_structure, height);
252 }
2c541554
AK		 253}
254
759001c5 255static void unref_picture(H264Context *h, Picture *pic)
2c541554 256{
759001c5 257 int off = offsetof(Picture, tf) + sizeof(pic->tf);
2c541554
AK		 258 int i;
259
a553c6a3 260 if (!pic->f.buf[0])
759001c5
AK		 261 return;
262
263 ff_thread_release_buffer(h->avctx, &pic->tf);
264 av_buffer_unref(&pic->hwaccel_priv_buf);
2c541554 265
759001c5
AK		 266 av_buffer_unref(&pic->qscale_table_buf);
267 av_buffer_unref(&pic->mb_type_buf);
2c541554 268 for (i = 0; i < 2; i++) {
759001c5
AK		 269 av_buffer_unref(&pic->motion_val_buf[i]);
270 av_buffer_unref(&pic->ref_index_buf[i]);
2c541554 271 }
759001c5
AK		 272
273 memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
2c541554
AK		 274}
275
276static void release_unused_pictures(H264Context *h, int remove_current)
277{
278 int i;
279
280 /* release non reference frames */
759001c5 281 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
a553c6a3 282 if (h->DPB[i].f.buf[0] && !h->DPB[i].reference &&
2c541554 283 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
759001c5 284 unref_picture(h, &h->DPB[i]);
2c541554
AK		 285 }
286 }
287}
288
759001c5
AK		 289static int ref_picture(H264Context *h, Picture *dst, Picture *src)
290{
291 int ret, i;
292
293 av_assert0(!dst->f.buf[0]);
294 av_assert0(src->f.buf[0]);
295
296 src->tf.f = &src->f;
297 dst->tf.f = &dst->f;
298 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
299 if (ret < 0)
300 goto fail;
301
759001c5
AK		 302 dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf);
303 dst->mb_type_buf = av_buffer_ref(src->mb_type_buf);
304 if (!dst->qscale_table_buf || !dst->mb_type_buf)
305 goto fail;
306 dst->qscale_table = src->qscale_table;
307 dst->mb_type = src->mb_type;
308
16c22122 309 for (i = 0; i < 2; i++) {
759001c5
AK		 310 dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]);
311 dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]);
312 if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i])
313 goto fail;
314 dst->motion_val[i] = src->motion_val[i];
315 dst->ref_index[i] = src->ref_index[i];
316 }
317
318 if (src->hwaccel_picture_private) {
319 dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
320 if (!dst->hwaccel_priv_buf)
321 goto fail;
322 dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
323 }
324
325 for (i = 0; i < 2; i++)
326 dst->field_poc[i] = src->field_poc[i];
327
328 memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc));
329 memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count));
330
16c22122
DB		 331 dst->poc = src->poc;
332 dst->frame_num = src->frame_num;
333 dst->mmco_reset = src->mmco_reset;
334 dst->pic_id = src->pic_id;
335 dst->long_ref = src->long_ref;
336 dst->mbaff = src->mbaff;
337 dst->field_picture = src->field_picture;
338 dst->needs_realloc = src->needs_realloc;
339 dst->reference = src->reference;
28096e0a 340 dst->recovered = src->recovered;
759001c5
AK		 341
342 return 0;
343fail:
344 unref_picture(h, dst);
345 return ret;
346}
347
2c541554
AK		 348static int alloc_scratch_buffers(H264Context *h, int linesize)
349{
350 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
351
352 if (h->bipred_scratchpad)
353 return 0;
354
355 h->bipred_scratchpad = av_malloc(16 * 6 * alloc_size);
356 // edge emu needs blocksize + filter length - 1
357 // (= 21x21 for h264)
358 h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 21);
359 h->me.scratchpad = av_mallocz(alloc_size * 2 * 16 * 2);
360
361 if (!h->bipred_scratchpad || !h->edge_emu_buffer || !h->me.scratchpad) {
362 av_freep(&h->bipred_scratchpad);
363 av_freep(&h->edge_emu_buffer);
364 av_freep(&h->me.scratchpad);
365 return AVERROR(ENOMEM);
366 }
367
368 h->me.temp = h->me.scratchpad;
369
370 return 0;
371}
372
759001c5 373static int init_table_pools(H264Context *h)
2c541554
AK		 374{
375 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
376 const int mb_array_size = h->mb_stride * h->mb_height;
377 const int b4_stride = h->mb_width * 4 + 1;
378 const int b4_array_size = b4_stride * h->mb_height * 4;
759001c5
AK		 379
380 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
381 av_buffer_allocz);
382 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
383 sizeof(uint32_t), av_buffer_allocz);
384 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
385 sizeof(int16_t), av_buffer_allocz);
386 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
387
388 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
389 !h->ref_index_pool) {
390 av_buffer_pool_uninit(&h->qscale_table_pool);
391 av_buffer_pool_uninit(&h->mb_type_pool);
392 av_buffer_pool_uninit(&h->motion_val_pool);
393 av_buffer_pool_uninit(&h->ref_index_pool);
394 return AVERROR(ENOMEM);
395 }
396
397 return 0;
398}
399
400static int alloc_picture(H264Context *h, Picture *pic)
401{
2c541554
AK		 402 int i, ret = 0;
403
404 av_assert0(!pic->f.data[0]);
405
9c9ede44
HL		 406 pic->tf.f = &pic->f;
407 ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
408 AV_GET_BUFFER_FLAG_REF : 0);
409 if (ret < 0)
410 goto fail;
411
412 h->linesize = pic->f.linesize[0];
413 h->uvlinesize = pic->f.linesize[1];
414
2c541554
AK		 415 if (h->avctx->hwaccel) {
416 const AVHWAccel *hwaccel = h->avctx->hwaccel;
759001c5 417 av_assert0(!pic->hwaccel_picture_private);
2c541554 418 if (hwaccel->priv_data_size) {
759001c5
AK		 419 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->priv_data_size);
420 if (!pic->hwaccel_priv_buf)
2c541554 421 return AVERROR(ENOMEM);
759001c5 422 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
2c541554
AK		 423 }
424 }
2c541554 425
759001c5
AK		 426 if (!h->qscale_table_pool) {
427 ret = init_table_pools(h);
428 if (ret < 0)
429 goto fail;
430 }
2c541554 431
759001c5
AK		 432 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
433 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
434 if (!pic->qscale_table_buf || !pic->mb_type_buf)
435 goto fail;
2c541554 436
759001c5
AK		 437 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
438 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
439
440 for (i = 0; i < 2; i++) {
441 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
442 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
443 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
444 goto fail;
2c541554 445
759001c5
AK		 446 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
447 pic->ref_index[i] = pic->ref_index_buf[i]->data;
448 }
2c541554
AK		 449
450 return 0;
451fail:
759001c5 452 unref_picture(h, pic);
2c541554
AK		 453 return (ret < 0) ? ret : AVERROR(ENOMEM);
454}
455
456static inline int pic_is_unused(H264Context *h, Picture *pic)
457{
a553c6a3 458 if (!pic->f.buf[0])
2c541554 459 return 1;
759001c5
AK		 460 if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
461 return 1;
2c541554
AK		 462 return 0;
463}
464
465static int find_unused_picture(H264Context *h)
466{
467 int i;
468
759001c5 469 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
2c541554
AK		 470 if (pic_is_unused(h, &h->DPB[i]))
471 break;
472 }
759001c5 473 if (i == MAX_PICTURE_COUNT)
2c541554
AK		 474 return AVERROR_INVALIDDATA;
475
476 if (h->DPB[i].needs_realloc) {
477 h->DPB[i].needs_realloc = 0;
759001c5 478 unref_picture(h, &h->DPB[i]);
2c541554
AK		 479 }
480
481 return i;
482}
483
0da71265 484/**
58c42af7
DB		 485 * Check if the top & left blocks are available if needed and
486 * change the dc mode so it only uses the available blocks.
0da71265 487 */
e5d40372
DB		 488int ff_h264_check_intra4x4_pred_mode(H264Context *h)
489{
e5d40372
DB		 490 static const int8_t top[12] = {
491 -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
492 };
493 static const int8_t left[12] = {
494 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
495 };
2bedc0e8
MN		 496 int i;
497
e5d40372
DB		 498 if (!(h->top_samples_available & 0x8000)) {
499 for (i = 0; i < 4; i++) {
500 int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]];
501 if (status < 0) {
2c541554 502 av_log(h->avctx, AV_LOG_ERROR,
e5d40372 503 "top block unavailable for requested intra4x4 mode %d at %d %d\n",
2c541554 504 status, h->mb_x, h->mb_y);
b3dc260e 505 return AVERROR_INVALIDDATA;
e5d40372
DB		 506 } else if (status) {
507 h->intra4x4_pred_mode_cache[scan8[0] + i] = status;
2bedc0e8
MN		 508 }
509 }
510 }
511
e5d40372
DB		 512 if ((h->left_samples_available & 0x8888) != 0x8888) {
513 static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
514 for (i = 0; i < 4; i++)
515 if (!(h->left_samples_available & mask[i])) {
516 int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
517 if (status < 0) {
2c541554 518 av_log(h->avctx, AV_LOG_ERROR,
e5d40372 519 "left block unavailable for requested intra4x4 mode %d at %d %d\n",
2c541554 520 status, h->mb_x, h->mb_y);
b3dc260e 521 return AVERROR_INVALIDDATA;
e5d40372
DB		 522 } else if (status) {
523 h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
2bedc0e8
MN		 524 }
525 }
2bedc0e8
MN		 526 }
527
528 return 0;
e5d40372 529} // FIXME cleanup like ff_h264_check_intra_pred_mode
2bedc0e8
MN		 530
531/**
58c42af7
DB		 532 * Check if the top & left blocks are available if needed and
533 * change the dc mode so it only uses the available blocks.
2bedc0e8 534 */
e5d40372
DB		 535int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
536{
e5d40372
DB		 537 static const int8_t top[7] = { LEFT_DC_PRED8x8, 1, -1, -1 };
538 static const int8_t left[7] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
539
540 if (mode > 6U) {
2c541554 541 av_log(h->avctx, AV_LOG_ERROR,
e5d40372 542 "out of range intra chroma pred mode at %d %d\n",
2c541554 543 h->mb_x, h->mb_y);
b3dc260e 544 return AVERROR_INVALIDDATA;
5175b937 545 }
115329f1 546
e5d40372
DB		 547 if (!(h->top_samples_available & 0x8000)) {
548 mode = top[mode];
549 if (mode < 0) {
2c541554 550 av_log(h->avctx, AV_LOG_ERROR,
e5d40372 551 "top block unavailable for requested intra mode at %d %d\n",
2c541554 552 h->mb_x, h->mb_y);
b3dc260e 553 return AVERROR_INVALIDDATA;
0da71265
MN		 554 }
555 }
115329f1 556
e5d40372
DB		 557 if ((h->left_samples_available & 0x8080) != 0x8080) {
558 mode = left[mode];
559 if (is_chroma && (h->left_samples_available & 0x8080)) {
560 // mad cow disease mode, aka MBAFF + constrained_intra_pred
561 mode = ALZHEIMER_DC_L0T_PRED8x8 +
562 (!(h->left_samples_available & 0x8000)) +
563 2 * (mode == DC_128_PRED8x8);
d1d10e91 564 }
e5d40372 565 if (mode < 0) {
2c541554 566 av_log(h->avctx, AV_LOG_ERROR,
e5d40372 567 "left block unavailable for requested intra mode at %d %d\n",
2c541554 568 h->mb_x, h->mb_y);
b3dc260e 569 return AVERROR_INVALIDDATA;
115329f1 570 }
0da71265
MN		 571 }
572
573 return mode;
574}
575
e5d40372
DB		 576const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
577 int *dst_length, int *consumed, int length)
578{
0da71265
MN		 579 int i, si, di;
580 uint8_t *dst;
24456882 581 int bufidx;
0da71265 582
e5d40372
DB		 583 // src[0]&0x80; // forbidden bit
584 h->nal_ref_idc = src[0] >> 5;
585 h->nal_unit_type = src[0] & 0x1F;
0da71265 586
e5d40372
DB		 587 src++;
588 length--;
e08715d3 589
58db34aa 590#define STARTCODE_TEST \
16c22122
DB		 591 if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
592 if (src[i + 2] != 3) { \
593 /* startcode, so we must be past the end */ \
594 length = i; \
595 } \
596 break; \
597 }
598
b250f9c6 599#if HAVE_FAST_UNALIGNED
58db34aa 600#define FIND_FIRST_ZERO \
16c22122
DB		 601 if (i > 0 && !src[i]) \
602 i--; \
603 while (src[i]) \
604 i++
605
e5d40372 606#if HAVE_FAST_64BIT
e5d40372
DB		 607 for (i = 0; i + 1 < length; i += 9) {
608 if (!((~AV_RN64A(src + i) &
609 (AV_RN64A(src + i) - 0x0100010001000101ULL)) &
610 0x8000800080008080ULL))
58db34aa
RB		 611 continue;
612 FIND_FIRST_ZERO;
613 STARTCODE_TEST;
614 i -= 7;
615 }
e5d40372 616#else
e5d40372
DB		 617 for (i = 0; i + 1 < length; i += 5) {
618 if (!((~AV_RN32A(src + i) &
619 (AV_RN32A(src + i) - 0x01000101U)) &
620 0x80008080U))
e08715d3 621 continue;
58db34aa
RB		 622 FIND_FIRST_ZERO;
623 STARTCODE_TEST;
624 i -= 3;
625 }
626#endif
e08715d3 627#else
e5d40372
DB		 628 for (i = 0; i + 1 < length; i += 2) {
629 if (src[i])
630 continue;
631 if (i > 0 && src[i - 1] == 0)
632 i--;
58db34aa 633 STARTCODE_TEST;
0da71265 634 }
58db34aa 635#endif
0da71265 636
e5d40372
DB		 637 if (i >= length - 1) { // no escaped 0
638 *dst_length = length;
639 *consumed = length + 1; // +1 for the header
115329f1 640 return src;
0da71265
MN		 641 }
642
e5d40372
DB		 643 // use second escape buffer for inter data
644 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0;
645 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx],
646 length + FF_INPUT_BUFFER_PADDING_SIZE);
647 dst = h->rbsp_buffer[bufidx];
0da71265 648
e5d40372 649 if (dst == NULL)
ac658be5 650 return NULL;
ac658be5 651
593af7cd 652 memcpy(dst, src, i);
e5d40372
DB		 653 si = di = i;
654 while (si + 2 < length) {
655 // remove escapes (very rare 1:2^22)
656 if (src[si + 2] > 3) {
657 dst[di++] = src[si++];
658 dst[di++] = src[si++];
659 } else if (src[si] == 0 && src[si + 1] == 0) {
660 if (src[si + 2] == 3) { // escape
661 dst[di++] = 0;
662 dst[di++] = 0;
663 si += 3;
c8470cc1 664 continue;
e5d40372 665 } else // next start code
593af7cd 666 goto nsc;
0da71265
MN		 667 }
668
e5d40372 669 dst[di++] = src[si++];
0da71265 670 }
e5d40372
DB		 671 while (si < length)
672 dst[di++] = src[si++];
0da71265 673
16c22122 674nsc:
e5d40372 675 memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
d4369630 676
e5d40372
DB		 677 *dst_length = di;
678 *consumed = si + 1; // +1 for the header
679 /* FIXME store exact number of bits in the getbitcontext
680 * (it is needed for decoding) */
0da71265
MN		 681 return dst;
682}
683
85297319
DEP		 684/**
685 * Identify the exact end of the bitstream
686 * @return the length of the trailing, or 0 if damaged
687 */
b691fd7a 688static int decode_rbsp_trailing(H264Context *h, const uint8_t *src)
e5d40372
DB		 689{
690 int v = *src;
0da71265
MN		 691 int r;
692
2c541554 693 tprintf(h->avctx, "rbsp trailing %X\n", v);
0da71265 694
e5d40372
DB		 695 for (r = 1; r < 9; r++) {
696 if (v & 1)
697 return r;
698 v >>= 1;
0da71265
MN		 699 }
700 return 0;
701}
702
e5d40372
DB		 703static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n,
704 int height, int y_offset, int list)
705{
16c22122 706 int raw_my = h->mv_cache[list][scan8[n]][1];
fb845ffd
RB		 707 int filter_height_up = (raw_my & 3) ? 2 : 0;
708 int filter_height_down = (raw_my & 3) ? 3 : 0;
16c22122
DB		 709 int full_my = (raw_my >> 2) + y_offset;
710 int top = full_my - filter_height_up;
711 int bottom = full_my + filter_height_down + height;
6a9c8594
AS		 712
713 return FFMAX(abs(top), bottom);
714}
715
e5d40372
DB		 716static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n,
717 int height, int y_offset, int list0,
718 int list1, int *nrefs)
719{
6a9c8594
AS		 720 int my;
721
da6be8fc 722 y_offset += 16 * (h->mb_y >> MB_FIELD(h));
6a9c8594 723
e5d40372
DB		 724 if (list0) {
725 int ref_n = h->ref_cache[0][scan8[n]];
726 Picture *ref = &h->ref_list[0][ref_n];
6a9c8594
AS		 727
728 // Error resilience puts the current picture in the ref list.
729 // Don't try to wait on these as it will cause a deadlock.
730 // Fields can wait on each other, though.
16c22122 731 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||
759001c5 732 (ref->reference & 3) != h->picture_structure) {
6a9c8594 733 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
e5d40372
DB		 734 if (refs[0][ref_n] < 0)
735 nrefs[0] += 1;
6a9c8594
AS		 736 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
737 }
738 }
739
e5d40372
DB		 740 if (list1) {
741 int ref_n = h->ref_cache[1][scan8[n]];
742 Picture *ref = &h->ref_list[1][ref_n];
6a9c8594 743
759001c5
AK		 744 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||
745 (ref->reference & 3) != h->picture_structure) {
6a9c8594 746 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
e5d40372
DB		 747 if (refs[1][ref_n] < 0)
748 nrefs[1] += 1;
6a9c8594
AS		 749 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
750 }
751 }
752}
753
754/**
755 * Wait until all reference frames are available for MC operations.
756 *
757 * @param h the H264 context
758 */
e5d40372
DB		 759static void await_references(H264Context *h)
760{
e5d40372 761 const int mb_xy = h->mb_xy;
759001c5 762 const int mb_type = h->cur_pic.mb_type[mb_xy];
6a9c8594 763 int refs[2][48];
e5d40372 764 int nrefs[2] = { 0 };
6a9c8594
AS		 765 int ref, list;
766
767 memset(refs, -1, sizeof(refs));
768
e5d40372 769 if (IS_16X16(mb_type)) {
6a9c8594 770 get_lowest_part_y(h, refs, 0, 16, 0,
e5d40372
DB		 771 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
772 } else if (IS_16X8(mb_type)) {
6a9c8594 773 get_lowest_part_y(h, refs, 0, 8, 0,
e5d40372 774 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
6a9c8594 775 get_lowest_part_y(h, refs, 8, 8, 8,
e5d40372
DB		 776 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
777 } else if (IS_8X16(mb_type)) {
6a9c8594 778 get_lowest_part_y(h, refs, 0, 16, 0,
e5d40372 779 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
6a9c8594 780 get_lowest_part_y(h, refs, 4, 16, 0,
e5d40372
DB		 781 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
782 } else {
6a9c8594
AS		 783 int i;
784
785 assert(IS_8X8(mb_type));
786
e5d40372
DB		 787 for (i = 0; i < 4; i++) {
788 const int sub_mb_type = h->sub_mb_type[i];
789 const int n = 4 * i;
790 int y_offset = (i & 2) << 2;
791
792 if (IS_SUB_8X8(sub_mb_type)) {
793 get_lowest_part_y(h, refs, n, 8, y_offset,
794 IS_DIR(sub_mb_type, 0, 0),
795 IS_DIR(sub_mb_type, 0, 1),
796 nrefs);
797 } else if (IS_SUB_8X4(sub_mb_type)) {
798 get_lowest_part_y(h, refs, n, 4, y_offset,
799 IS_DIR(sub_mb_type, 0, 0),
800 IS_DIR(sub_mb_type, 0, 1),
801 nrefs);
802 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,
803 IS_DIR(sub_mb_type, 0, 0),
804 IS_DIR(sub_mb_type, 0, 1),
805 nrefs);
806 } else if (IS_SUB_4X8(sub_mb_type)) {
807 get_lowest_part_y(h, refs, n, 8, y_offset,
808 IS_DIR(sub_mb_type, 0, 0),
809 IS_DIR(sub_mb_type, 0, 1),
810 nrefs);
811 get_lowest_part_y(h, refs, n + 1, 8, y_offset,
812 IS_DIR(sub_mb_type, 0, 0),
813 IS_DIR(sub_mb_type, 0, 1),
814 nrefs);
815 } else {
6a9c8594
AS		 816 int j;
817 assert(IS_SUB_4X4(sub_mb_type));
e5d40372
DB		 818 for (j = 0; j < 4; j++) {
819 int sub_y_offset = y_offset + 2 * (j & 2);
820 get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,
821 IS_DIR(sub_mb_type, 0, 0),
822 IS_DIR(sub_mb_type, 0, 1),
823 nrefs);
6a9c8594
AS		 824 }
825 }
826 }
827 }
828
e5d40372
DB		 829 for (list = h->list_count - 1; list >= 0; list--)
830 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
6a9c8594 831 int row = refs[list][ref];
e5d40372
DB		 832 if (row >= 0) {
833 Picture *ref_pic = &h->ref_list[list][ref];
759001c5 834 int ref_field = ref_pic->reference - 1;
6a9c8594 835 int ref_field_picture = ref_pic->field_picture;
2c541554 836 int pic_height = 16 * h->mb_height >> ref_field_picture;
6a9c8594 837
82313eaa 838 row <<= MB_MBAFF(h);
6a9c8594
AS		 839 nrefs[list]--;
840
7fa00653 841 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
759001c5 842 ff_thread_await_progress(&ref_pic->tf,
e5d40372
DB		 843 FFMIN((row >> 1) - !(row & 1),
844 pic_height - 1),
845 1);
759001c5 846 ff_thread_await_progress(&ref_pic->tf,
e5d40372
DB		 847 FFMIN((row >> 1), pic_height - 1),
848 0);
7fa00653 849 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
759001c5 850 ff_thread_await_progress(&ref_pic->tf,
e5d40372
DB		 851 FFMIN(row * 2 + ref_field,
852 pic_height - 1),
853 0);
7fa00653 854 } else if (FIELD_PICTURE(h)) {
759001c5 855 ff_thread_await_progress(&ref_pic->tf,
e5d40372
DB		 856 FFMIN(row, pic_height - 1),
857 ref_field);
858 } else {
759001c5 859 ff_thread_await_progress(&ref_pic->tf,
e5d40372
DB		 860 FFMIN(row, pic_height - 1),
861 0);
6a9c8594
AS		 862 }
863 }
864 }
66c6b5e2 865}
66c6b5e2 866
e5d40372
DB		 867static av_always_inline void mc_dir_part(H264Context *h, Picture *pic,
868 int n, int square, int height,
869 int delta, int list,
870 uint8_t *dest_y, uint8_t *dest_cb,
871 uint8_t *dest_cr,
872 int src_x_offset, int src_y_offset,
873 qpel_mc_func *qpix_op,
874 h264_chroma_mc_func chroma_op,
875 int pixel_shift, int chroma_idc)
05fb63f5 876{
e5d40372
DB		 877 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
878 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
879 const int luma_xy = (mx & 3) + ((my & 3) << 2);
93f30547 880 ptrdiff_t offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;
e5d40372
DB		 881 uint8_t *src_y = pic->f.data[0] + offset;
882 uint8_t *src_cb, *src_cr;
fae6fd5b
RB		 883 int extra_width = 0;
884 int extra_height = 0;
e5d40372
DB		 885 int emu = 0;
886 const int full_mx = mx >> 2;
887 const int full_my = my >> 2;
2c541554 888 const int pic_width = 16 * h->mb_width;
da6be8fc 889 const int pic_height = 16 * h->mb_height >> MB_FIELD(h);
229d263c 890 int ysh;
115329f1 891
e5d40372
DB		 892 if (mx & 7)
893 extra_width -= 3;
894 if (my & 7)
895 extra_height -= 3;
896
897 if (full_mx < 0 - extra_width ||
898 full_my < 0 - extra_height ||
899 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
900 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
2c541554 901 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
8c53d39e 902 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,
458446ac 903 h->mb_linesize, h->mb_linesize,
8c53d39e
RB		 904 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
905 full_my - 2, pic_width, pic_height);
2c541554 906 src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
e5d40372
DB		 907 emu = 1;
908 }
909
910 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?
911 if (!square)
5d18eaad 912 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
115329f1 913
2c541554 914 if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY)
e5d40372 915 return;
7b442ad9 916
e5d40372 917 if (chroma_idc == 3 /* yuv444 */) {
657ccb5a 918 src_cb = pic->f.data[1] + offset;
e5d40372 919 if (emu) {
2c541554 920 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
8c53d39e 921 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,
458446ac 922 h->mb_linesize, h->mb_linesize,
8c53d39e
RB		 923 16 + 5, 16 + 5 /*FIXME*/,
924 full_mx - 2, full_my - 2,
925 pic_width, pic_height);
2c541554 926 src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
c90b9442 927 }
e5d40372
DB		 928 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?
929 if (!square)
c90b9442 930 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);
c90b9442 931
657ccb5a 932 src_cr = pic->f.data[2] + offset;
e5d40372 933 if (emu) {
2c541554 934 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
8c53d39e 935 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,
458446ac 936 h->mb_linesize, h->mb_linesize,
8c53d39e
RB		 937 16 + 5, 16 + 5 /*FIXME*/,
938 full_mx - 2, full_my - 2,
939 pic_width, pic_height);
2c541554 940 src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
c90b9442 941 }
e5d40372
DB		 942 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?
943 if (!square)
c90b9442 944 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);
c90b9442
JGG		 945 return;
946 }
947
05fb63f5 948 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
da6be8fc 949 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) {
5d18eaad 950 // chroma offset when predicting from a field of opposite parity
759001c5 951 my += 2 * ((h->mb_y & 1) - (pic->reference - 1));
e5d40372 952 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
5d18eaad 953 }
229d263c 954
e5d40372
DB		 955 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +
956 (my >> ysh) * h->mb_uvlinesize;
957 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +
958 (my >> ysh) * h->mb_uvlinesize;
5d18eaad 959
e5d40372 960 if (emu) {
458446ac
RB		 961 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb,
962 h->mb_uvlinesize, h->mb_uvlinesize,
8c53d39e
RB		 963 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
964 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
2c541554 965 src_cb = h->edge_emu_buffer;
0da71265 966 }
e5d40372
DB		 967 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,
968 height >> (chroma_idc == 1 /* yuv420 */),
969 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
0da71265 970
e5d40372 971 if (emu) {
458446ac
RB		 972 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr,
973 h->mb_uvlinesize, h->mb_uvlinesize,
8c53d39e
RB		 974 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
975 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
2c541554 976 src_cr = h->edge_emu_buffer;
0da71265 977 }
05fb63f5 978 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
e5d40372 979 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
0da71265
MN		 980}
981
e5d40372
DB		 982static av_always_inline void mc_part_std(H264Context *h, int n, int square,
983 int height, int delta,
984 uint8_t *dest_y, uint8_t *dest_cb,
985 uint8_t *dest_cr,
986 int x_offset, int y_offset,
987 qpel_mc_func *qpix_put,
988 h264_chroma_mc_func chroma_put,
989 qpel_mc_func *qpix_avg,
990 h264_chroma_mc_func chroma_avg,
991 int list0, int list1,
992 int pixel_shift, int chroma_idc)
05fb63f5 993{
e5d40372
DB		 994 qpel_mc_func *qpix_op = qpix_put;
995 h264_chroma_mc_func chroma_op = chroma_put;
115329f1 996
e5d40372 997 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
05fb63f5 998 if (chroma_idc == 3 /* yuv444 */) {
e5d40372
DB		 999 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1000 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
05fb63f5 1001 } else if (chroma_idc == 2 /* yuv422 */) {
e5d40372
DB		 1002 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1003 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1004 } else { /* yuv420 */
1005 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1006 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
c90b9442 1007 }
2c541554 1008 x_offset += 8 * h->mb_x;
da6be8fc 1009 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
115329f1 1010
e5d40372
DB		 1011 if (list0) {
1012 Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];
c2d33742 1013 mc_dir_part(h, ref, n, square, height, delta, 0,
e5d40372
DB		 1014 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1015 qpix_op, chroma_op, pixel_shift, chroma_idc);
0da71265 1016
e5d40372
DB		 1017 qpix_op = qpix_avg;
1018 chroma_op = chroma_avg;
0da71265
MN		 1019 }
1020
e5d40372
DB		 1021 if (list1) {
1022 Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];
c2d33742 1023 mc_dir_part(h, ref, n, square, height, delta, 1,
e5d40372
DB		 1024 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1025 qpix_op, chroma_op, pixel_shift, chroma_idc);
0da71265
MN		 1026 }
1027}
1028
e5d40372
DB		 1029static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,
1030 int height, int delta,
1031 uint8_t *dest_y, uint8_t *dest_cb,
1032 uint8_t *dest_cr,
1033 int x_offset, int y_offset,
1034 qpel_mc_func *qpix_put,
1035 h264_chroma_mc_func chroma_put,
1036 h264_weight_func luma_weight_op,
1037 h264_weight_func chroma_weight_op,
1038 h264_biweight_func luma_weight_avg,
1039 h264_biweight_func chroma_weight_avg,
1040 int list0, int list1,
1041 int pixel_shift, int chroma_idc)
1042{
c2d33742 1043 int chroma_height;
9f2d1b4f 1044
e5d40372 1045 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
05fb63f5 1046 if (chroma_idc == 3 /* yuv444 */) {
e5d40372 1047 chroma_height = height;
c90b9442 1048 chroma_weight_avg = luma_weight_avg;
e5d40372
DB		 1049 chroma_weight_op = luma_weight_op;
1050 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1051 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
05fb63f5 1052 } else if (chroma_idc == 2 /* yuv422 */) {
c2d33742 1053 chroma_height = height;
e5d40372
DB		 1054 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1055 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1056 } else { /* yuv420 */
c2d33742 1057 chroma_height = height >> 1;
e5d40372
DB		 1058 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1059 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
c90b9442 1060 }
2c541554 1061 x_offset += 8 * h->mb_x;
da6be8fc 1062 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
115329f1 1063
e5d40372 1064 if (list0 && list1) {
9f2d1b4f
LM		 1065 /* don't optimize for luma-only case, since B-frames usually
1066 * use implicit weights => chroma too. */
a394959b
JG		 1067 uint8_t *tmp_cb = h->bipred_scratchpad;
1068 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);
1069 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;
e5d40372
DB		 1070 int refn0 = h->ref_cache[0][scan8[n]];
1071 int refn1 = h->ref_cache[1][scan8[n]];
9f2d1b4f 1072
c2d33742 1073 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,
9f2d1b4f 1074 dest_y, dest_cb, dest_cr,
05fb63f5
RB		 1075 x_offset, y_offset, qpix_put, chroma_put,
1076 pixel_shift, chroma_idc);
c2d33742 1077 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,
9f2d1b4f 1078 tmp_y, tmp_cb, tmp_cr,
05fb63f5
RB		 1079 x_offset, y_offset, qpix_put, chroma_put,
1080 pixel_shift, chroma_idc);
9f2d1b4f 1081
e5d40372 1082 if (h->use_weight == 2) {
2c541554 1083 int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1];
9f2d1b4f 1084 int weight1 = 64 - weight0;
e5d40372
DB		 1085 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,
1086 height, 5, weight0, weight1, 0);
c2d33742
RB		 1087 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,
1088 chroma_height, 5, weight0, weight1, 0);
1089 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,
1090 chroma_height, 5, weight0, weight1, 0);
e5d40372
DB		 1091 } else {
1092 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,
1093 h->luma_log2_weight_denom,
1094 h->luma_weight[refn0][0][0],
1095 h->luma_weight[refn1][1][0],
1096 h->luma_weight[refn0][0][1] +
1097 h->luma_weight[refn1][1][1]);
1098 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,
1099 h->chroma_log2_weight_denom,
1100 h->chroma_weight[refn0][0][0][0],
1101 h->chroma_weight[refn1][1][0][0],
1102 h->chroma_weight[refn0][0][0][1] +
1103 h->chroma_weight[refn1][1][0][1]);
1104 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,
1105 h->chroma_log2_weight_denom,
1106 h->chroma_weight[refn0][0][1][0],
1107 h->chroma_weight[refn1][1][1][0],
1108 h->chroma_weight[refn0][0][1][1] +
1109 h->chroma_weight[refn1][1][1][1]);
9f2d1b4f 1110 }
e5d40372
DB		 1111 } else {
1112 int list = list1 ? 1 : 0;
1113 int refn = h->ref_cache[list][scan8[n]];
1114 Picture *ref = &h->ref_list[list][refn];
c2d33742 1115 mc_dir_part(h, ref, n, square, height, delta, list,
9f2d1b4f 1116 dest_y, dest_cb, dest_cr, x_offset, y_offset,
05fb63f5 1117 qpix_put, chroma_put, pixel_shift, chroma_idc);
9f2d1b4f 1118
e5d40372
DB		 1119 luma_weight_op(dest_y, h->mb_linesize, height,
1120 h->luma_log2_weight_denom,
1121 h->luma_weight[refn][list][0],
1122 h->luma_weight[refn][list][1]);
1123 if (h->use_weight_chroma) {
1124 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,
1125 h->chroma_log2_weight_denom,
1126 h->chroma_weight[refn][list][0][0],
1127 h->chroma_weight[refn][list][0][1]);
1128 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,
1129 h->chroma_log2_weight_denom,
1130 h->chroma_weight[refn][list][1][0],
1131 h->chroma_weight[refn][list][1][1]);
9f2d1b4f
LM		 1132 }
1133 }
1134}
1135
e5d40372
DB		 1136static av_always_inline void prefetch_motion(H264Context *h, int list,
1137 int pixel_shift, int chroma_idc)
27209bb1 1138{
513fbd8e
LM		 1139 /* fetch pixels for estimated mv 4 macroblocks ahead
1140 * optimized for 64byte cache lines */
513fbd8e 1141 const int refn = h->ref_cache[list][scan8[0]];
e5d40372 1142 if (refn >= 0) {
2c541554
AK		 1143 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8;
1144 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y;
657ccb5a 1145 uint8_t **src = h->ref_list[list][refn].f.data;
e5d40372 1146 int off = (mx << pixel_shift) +
2c541554 1147 (my + (h->mb_x & 3) * 4) * h->mb_linesize +
e5d40372 1148 (64 << pixel_shift);
2c541554 1149 h->vdsp.prefetch(src[0] + off, h->linesize, 4);
05fb63f5 1150 if (chroma_idc == 3 /* yuv444 */) {
2c541554
AK		 1151 h->vdsp.prefetch(src[1] + off, h->linesize, 4);
1152 h->vdsp.prefetch(src[2] + off, h->linesize, 4);
e5d40372
DB		 1153 } else {
1154 off = ((mx >> 1) << pixel_shift) +
2c541554 1155 ((my >> 1) + (h->mb_x & 7)) * h->uvlinesize +
e5d40372 1156 (64 << pixel_shift);
2c541554 1157 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
c90b9442 1158 }
513fbd8e
LM		 1159 }
1160}
1161
e5d40372
DB		 1162static void free_tables(H264Context *h, int free_rbsp)
1163{
7978debd 1164 int i;
afebe2f7 1165 H264Context *hx;
6a9c8594 1166
0da71265 1167 av_freep(&h->intra4x4_pred_mode);
e5017ab8
LA		 1168 av_freep(&h->chroma_pred_mode_table);
1169 av_freep(&h->cbp_table);
9e528114
LA		 1170 av_freep(&h->mvd_table[0]);
1171 av_freep(&h->mvd_table[1]);
5ad984c9 1172 av_freep(&h->direct_table);
0da71265
MN		 1173 av_freep(&h->non_zero_count);
1174 av_freep(&h->slice_table_base);
e5d40372 1175 h->slice_table = NULL;
c988f975 1176 av_freep(&h->list_counts);
e5017ab8 1177
0da71265 1178 av_freep(&h->mb2b_xy);
d43c1922 1179 av_freep(&h->mb2br_xy);
9f2d1b4f 1180
759001c5
AK		 1181 av_buffer_pool_uninit(&h->qscale_table_pool);
1182 av_buffer_pool_uninit(&h->mb_type_pool);
1183 av_buffer_pool_uninit(&h->motion_val_pool);
1184 av_buffer_pool_uninit(&h->ref_index_pool);
1185
1186 if (free_rbsp && h->DPB) {
1187 for (i = 0; i < MAX_PICTURE_COUNT; i++)
1188 unref_picture(h, &h->DPB[i]);
2c541554 1189 av_freep(&h->DPB);
2c541554 1190 } else if (h->DPB) {
759001c5 1191 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2c541554
AK		 1192 h->DPB[i].needs_realloc = 1;
1193 }
1194
1195 h->cur_pic_ptr = NULL;
1196
e5d40372 1197 for (i = 0; i < MAX_THREADS; i++) {
afebe2f7 1198 hx = h->thread_context[i];
e5d40372
DB		 1199 if (!hx)
1200 continue;
afebe2f7
AÖ		 1201 av_freep(&hx->top_borders[1]);
1202 av_freep(&hx->top_borders[0]);
a394959b 1203 av_freep(&hx->bipred_scratchpad);
2c541554
AK		 1204 av_freep(&hx->edge_emu_buffer);
1205 av_freep(&hx->dc_val_base);
1206 av_freep(&hx->me.scratchpad);
1207 av_freep(&hx->er.mb_index2xy);
1208 av_freep(&hx->er.error_status_table);
1209 av_freep(&hx->er.er_temp_buffer);
1210 av_freep(&hx->er.mbintra_table);
1211 av_freep(&hx->er.mbskip_table);
1212
e5d40372 1213 if (free_rbsp) {
fcb7e535
RB		 1214 av_freep(&hx->rbsp_buffer[1]);
1215 av_freep(&hx->rbsp_buffer[0]);
1216 hx->rbsp_buffer_size[0] = 0;
1217 hx->rbsp_buffer_size[1] = 0;
91078926 1218 }
e5d40372
DB		 1219 if (i)
1220 av_freep(&h->thread_context[i]);
afebe2f7 1221 }
0da71265
MN		 1222}
1223
e5d40372
DB		 1224static void init_dequant8_coeff_table(H264Context *h)
1225{
1226 int i, j, q, x;
1227 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
239ea04c 1228
e5d40372 1229 for (i = 0; i < 6; i++) {
c90b9442 1230 h->dequant8_coeff[i] = h->dequant8_buffer[i];
e5d40372
DB		 1231 for (j = 0; j < i; j++)
1232 if (!memcmp(h->pps.scaling_matrix8[j], h->pps.scaling_matrix8[i],
1233 64 * sizeof(uint8_t))) {
c90b9442
JGG		 1234 h->dequant8_coeff[i] = h->dequant8_buffer[j];
1235 break;
1236 }
e5d40372 1237 if (j < i)
c90b9442 1238 continue;
239ea04c 1239
e5d40372 1240 for (q = 0; q < max_qp + 1; q++) {
d9ec210b 1241 int shift = div6[q];
e5d40372
DB		 1242 int idx = rem6[q];
1243 for (x = 0; x < 64; x++)
1244 h->dequant8_coeff[i][q][(x >> 3) | ((x & 7) << 3)] =
1245 ((uint32_t)dequant8_coeff_init[idx][dequant8_coeff_init_scan[((x >> 1) & 12) | (x & 3)]] *
1246 h->pps.scaling_matrix8[i][x]) << shift;
239ea04c
LM		 1247 }
1248 }
1249}
1250
e5d40372
DB		 1251static void init_dequant4_coeff_table(H264Context *h)
1252{
1253 int i, j, q, x;
1254 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
1255 for (i = 0; i < 6; i++) {
239ea04c 1256 h->dequant4_coeff[i] = h->dequant4_buffer[i];
e5d40372
DB		 1257 for (j = 0; j < i; j++)
1258 if (!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i],
1259 16 * sizeof(uint8_t))) {
239ea04c
LM		 1260 h->dequant4_coeff[i] = h->dequant4_buffer[j];
1261 break;
1262 }
e5d40372 1263 if (j < i)
239ea04c
LM		 1264 continue;
1265
e5d40372 1266 for (q = 0; q < max_qp + 1; q++) {
d9ec210b 1267 int shift = div6[q] + 2;
e5d40372
DB		 1268 int idx = rem6[q];
1269 for (x = 0; x < 16; x++)
1270 h->dequant4_coeff[i][q][(x >> 2) | ((x << 2) & 0xF)] =
1271 ((uint32_t)dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] *
1272 h->pps.scaling_matrix4[i][x]) << shift;
239ea04c
LM		 1273 }
1274 }
1275}
1276
e5d40372
DB		 1277static void init_dequant_tables(H264Context *h)
1278{
1279 int i, x;
239ea04c 1280 init_dequant4_coeff_table(h);
e5d40372 1281 if (h->pps.transform_8x8_mode)
239ea04c 1282 init_dequant8_coeff_table(h);
e5d40372
DB		 1283 if (h->sps.transform_bypass) {
1284 for (i = 0; i < 6; i++)
1285 for (x = 0; x < 16; x++)
1286 h->dequant4_coeff[i][0][x] = 1 << 6;
1287 if (h->pps.transform_8x8_mode)
1288 for (i = 0; i < 6; i++)
1289 for (x = 0; x < 64; x++)
1290 h->dequant8_coeff[i][0][x] = 1 << 6;
239ea04c
LM		 1291 }
1292}
1293
e5d40372
DB		 1294int ff_h264_alloc_tables(H264Context *h)
1295{
16c22122
DB		 1296 const int big_mb_num = h->mb_stride * (h->mb_height + 1);
1297 const int row_mb_num = h->mb_stride * 2 * h->avctx->thread_count;
2c541554 1298 int x, y, i;
e5d40372 1299
2c541554 1300 FF_ALLOCZ_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
e5d40372 1301 row_mb_num * 8 * sizeof(uint8_t), fail)
2c541554 1302 FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
e5d40372 1303 big_mb_num * 48 * sizeof(uint8_t), fail)
2c541554
AK		 1304 FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
1305 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
1306 FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
e5d40372 1307 big_mb_num * sizeof(uint16_t), fail)
2c541554 1308 FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
e5d40372 1309 big_mb_num * sizeof(uint8_t), fail)
2c541554 1310 FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[0],
e5d40372 1311 16 * row_mb_num * sizeof(uint8_t), fail);
2c541554 1312 FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[1],
e5d40372 1313 16 * row_mb_num * sizeof(uint8_t), fail);
2c541554 1314 FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table,
e5d40372 1315 4 * big_mb_num * sizeof(uint8_t), fail);
2c541554 1316 FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts,
e5d40372
DB		 1317 big_mb_num * sizeof(uint8_t), fail)
1318
1319 memset(h->slice_table_base, -1,
2c541554
AK		 1320 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
1321 h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
e5d40372 1322
2c541554 1323 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
e5d40372 1324 big_mb_num * sizeof(uint32_t), fail);
2c541554 1325 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy,
e5d40372 1326 big_mb_num * sizeof(uint32_t), fail);
2c541554
AK		 1327 for (y = 0; y < h->mb_height; y++)
1328 for (x = 0; x < h->mb_width; x++) {
1329 const int mb_xy = x + y * h->mb_stride;
e5d40372
DB		 1330 const int b_xy = 4 * x + 4 * y * h->b_stride;
1331
1332 h->mb2b_xy[mb_xy] = b_xy;
2c541554 1333 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
0da71265 1334 }
9f2d1b4f 1335
e5d40372 1336 if (!h->dequant4_coeff[0])
56edbd81
LM		 1337 init_dequant_tables(h);
1338
2c541554 1339 if (!h->DPB) {
759001c5 1340 h->DPB = av_mallocz_array(MAX_PICTURE_COUNT, sizeof(*h->DPB));
2c541554
AK		 1341 if (!h->DPB)
1342 return AVERROR(ENOMEM);
759001c5 1343 for (i = 0; i < MAX_PICTURE_COUNT; i++)
598ce4ab
AK		 1344 av_frame_unref(&h->DPB[i].f);
1345 av_frame_unref(&h->cur_pic.f);
2c541554
AK		 1346 }
1347
0da71265 1348 return 0;
e5d40372 1349
0da71265 1350fail:
91078926 1351 free_tables(h, 1);
b3dc260e 1352 return AVERROR(ENOMEM);
0da71265
MN		 1353}
1354
afebe2f7
AÖ		 1355/**
1356 * Mimic alloc_tables(), but for every context thread.
1357 */
e5d40372
DB		 1358static void clone_tables(H264Context *dst, H264Context *src, int i)
1359{
2c541554 1360 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i * 8 * 2 * src->mb_stride;
e5d40372
DB		 1361 dst->non_zero_count = src->non_zero_count;
1362 dst->slice_table = src->slice_table;
1363 dst->cbp_table = src->cbp_table;
1364 dst->mb2b_xy = src->mb2b_xy;
1365 dst->mb2br_xy = src->mb2br_xy;
1366 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
2c541554
AK		 1367 dst->mvd_table[0] = src->mvd_table[0] + i * 8 * 2 * src->mb_stride;
1368 dst->mvd_table[1] = src->mvd_table[1] + i * 8 * 2 * src->mb_stride;
e5d40372
DB		 1369 dst->direct_table = src->direct_table;
1370 dst->list_counts = src->list_counts;
2c541554
AK		 1371 dst->DPB = src->DPB;
1372 dst->cur_pic_ptr = src->cur_pic_ptr;
1373 dst->cur_pic = src->cur_pic;
a394959b 1374 dst->bipred_scratchpad = NULL;
2c541554
AK		 1375 dst->edge_emu_buffer = NULL;
1376 dst->me.scratchpad = NULL;
1377 ff_h264_pred_init(&dst->hpc, src->avctx->codec_id, src->sps.bit_depth_luma,
e5d40372 1378 src->sps.chroma_format_idc);
afebe2f7
AÖ		 1379}
1380
1381/**
1382 * Init context
1383 * Allocate buffers which are not shared amongst multiple threads.
1384 */
e5d40372
DB		 1385static int context_init(H264Context *h)
1386{
2c541554
AK		 1387 ERContext *er = &h->er;
1388 int mb_array_size = h->mb_height * h->mb_stride;
1389 int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
1390 int c_size = h->mb_stride * (h->mb_height + 1);
1391 int yc_size = y_size + 2 * c_size;
1392 int x, y, i;
1393
1394 FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[0],
1395 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
1396 FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[1],
1397 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
e5d40372
DB		 1398
1399 h->ref_cache[0][scan8[5] + 1] =
1400 h->ref_cache[0][scan8[7] + 1] =
1401 h->ref_cache[0][scan8[13] + 1] =
1402 h->ref_cache[1][scan8[5] + 1] =
1403 h->ref_cache[1][scan8[7] + 1] =
1404 h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
145061a1 1405
0b499c9b
RB		 1406 if (CONFIG_ERROR_RESILIENCE) {
1407 /* init ER */
1408 er->avctx = h->avctx;
1409 er->dsp = &h->dsp;
1410 er->decode_mb = h264_er_decode_mb;
1411 er->opaque = h;
1412 er->quarter_sample = 1;
1413
1414 er->mb_num = h->mb_num;
1415 er->mb_width = h->mb_width;
1416 er->mb_height = h->mb_height;
1417 er->mb_stride = h->mb_stride;
1418 er->b8_stride = h->mb_width * 2 + 1;
2c541554 1419
0b499c9b
RB		 1420 FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy, (h->mb_num + 1) * sizeof(int),
1421 fail); // error ressilience code looks cleaner with this
1422 for (y = 0; y < h->mb_height; y++)
1423 for (x = 0; x < h->mb_width; x++)
1424 er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
2c541554 1425
0b499c9b 1426 er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
16c22122 1427 h->mb_stride + h->mb_width;
2c541554 1428
0b499c9b
RB		 1429 FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table,
1430 mb_array_size * sizeof(uint8_t), fail);
2c541554 1431
0b499c9b
RB		 1432 FF_ALLOC_OR_GOTO(h->avctx, er->mbintra_table, mb_array_size, fail);
1433 memset(er->mbintra_table, 1, mb_array_size);
2c541554 1434
0b499c9b 1435 FF_ALLOCZ_OR_GOTO(h->avctx, er->mbskip_table, mb_array_size + 2, fail);
2c541554 1436
0b499c9b
RB		 1437 FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer, h->mb_height * h->mb_stride,
1438 fail);
1439
1440 FF_ALLOCZ_OR_GOTO(h->avctx, h->dc_val_base, yc_size * sizeof(int16_t), fail);
1441 er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2;
1442 er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1;
1443 er->dc_val[2] = er->dc_val[1] + c_size;
1444 for (i = 0; i < yc_size; i++)
1445 h->dc_val_base[i] = 1024;
1446 }
54974c62 1447
afebe2f7 1448 return 0;
e5d40372 1449
afebe2f7 1450fail:
b3dc260e 1451 return AVERROR(ENOMEM); // free_tables will clean up for us
afebe2f7
AÖ		 1452}
1453
61c6eef5
JG		 1454static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
1455 int parse_extradata);
9855b2e3 1456
05e95319
HC		 1457int ff_h264_decode_extradata(H264Context *h)
1458{
2c541554 1459 AVCodecContext *avctx = h->avctx;
b3dc260e 1460 int ret;
9855b2e3 1461
e5d40372 1462 if (avctx->extradata[0] == 1) {
9855b2e3
MN		 1463 int i, cnt, nalsize;
1464 unsigned char *p = avctx->extradata;
1465
1466 h->is_avc = 1;
1467
e5d40372 1468 if (avctx->extradata_size < 7) {
9855b2e3 1469 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
b3dc260e 1470 return AVERROR_INVALIDDATA;
9855b2e3
MN		 1471 }
1472 /* sps and pps in the avcC always have length coded with 2 bytes,
e5d40372 1473 * so put a fake nal_length_size = 2 while parsing them */
9855b2e3
MN		 1474 h->nal_length_size = 2;
1475 // Decode sps from avcC
e5d40372
DB		 1476 cnt = *(p + 5) & 0x1f; // Number of sps
1477 p += 6;
9855b2e3
MN		 1478 for (i = 0; i < cnt; i++) {
1479 nalsize = AV_RB16(p) + 2;
d1186ff7 1480 if (p - avctx->extradata + nalsize > avctx->extradata_size)
b3dc260e
VG		 1481 return AVERROR_INVALIDDATA;
1482 ret = decode_nal_units(h, p, nalsize, 1);
1483 if (ret < 0) {
e5d40372
DB		 1484 av_log(avctx, AV_LOG_ERROR,
1485 "Decoding sps %d from avcC failed\n", i);
b3dc260e 1486 return ret;
9855b2e3
MN		 1487 }
1488 p += nalsize;
1489 }
1490 // Decode pps from avcC
1491 cnt = *(p++); // Number of pps
1492 for (i = 0; i < cnt; i++) {
1493 nalsize = AV_RB16(p) + 2;
d1186ff7 1494 if (p - avctx->extradata + nalsize > avctx->extradata_size)
b3dc260e
VG		 1495 return AVERROR_INVALIDDATA;
1496 ret = decode_nal_units(h, p, nalsize, 1);
1497 if (ret < 0) {
e5d40372
DB		 1498 av_log(avctx, AV_LOG_ERROR,
1499 "Decoding pps %d from avcC failed\n", i);
b3dc260e 1500 return ret;
9855b2e3
MN		 1501 }
1502 p += nalsize;
1503 }
e5d40372 1504 // Now store right nal length size, that will be used to parse all other nals
0c17beba 1505 h->nal_length_size = (avctx->extradata[4] & 0x03) + 1;
9855b2e3
MN		 1506 } else {
1507 h->is_avc = 0;
b3dc260e
VG		 1508 ret = decode_nal_units(h, avctx->extradata, avctx->extradata_size, 1);
1509 if (ret < 0)
1510 return ret;
9855b2e3 1511 }
05e95319
HC		 1512 return 0;
1513}
1514
e5d40372
DB		 1515av_cold int ff_h264_decode_init(AVCodecContext *avctx)
1516{
1517 H264Context *h = avctx->priv_data;
ea2bb12e 1518 int i;
b3dc260e 1519 int ret;
05e95319 1520
2c541554 1521 h->avctx = avctx;
48d0fd2d 1522
48d0fd2d
AK		 1523 h->bit_depth_luma = 8;
1524 h->chroma_format_idc = 1;
1525
1526 ff_h264dsp_init(&h->h264dsp, 8, 1);
1527 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
1528 ff_h264qpel_init(&h->h264qpel, 8);
1529 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, 8, 1);
1530
1531 h->dequant_coeff_pps = -1;
1532
1533 /* needed so that IDCT permutation is known early */
85deb51a
RB		 1534 if (CONFIG_ERROR_RESILIENCE)
1535 ff_dsputil_init(&h->dsp, h->avctx);
48d0fd2d
AK		 1536 ff_videodsp_init(&h->vdsp, 8);
1537
1538 memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t));
1539 memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t));
05e95319 1540
2c541554 1541 h->picture_structure = PICT_FRAME;
2c541554
AK		 1542 h->slice_context_count = 1;
1543 h->workaround_bugs = avctx->workaround_bugs;
1544 h->flags = avctx->flags;
05e95319 1545
e5d40372
DB		 1546 /* set defaults */
1547 // s->decode_mb = ff_h263_decode_mb;
e5d40372 1548 if (!avctx->has_b_frames)
2c541554 1549 h->low_delay = 1;
05e95319
HC		 1550
1551 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1552
1553 ff_h264_decode_init_vlc();
1554
cab8c5f8
AK		 1555 ff_init_cabac_states();
1556
16c22122 1557 h->pixel_shift = 0;
19a0729b 1558 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
6e3ef511 1559
05e95319 1560 h->thread_context[0] = h;
e5d40372 1561 h->outputed_poc = h->next_outputed_poc = INT_MIN;
ea2bb12e
RB		 1562 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
1563 h->last_pocs[i] = INT_MIN;
e5d40372
DB		 1564 h->prev_poc_msb = 1 << 16;
1565 h->x264_build = -1;
05e95319 1566 ff_h264_reset_sei(h);
28096e0a
JS		 1567 h->recovery_frame = -1;
1568 h->frame_recovered = 0;
36ef5369 1569 if (avctx->codec_id == AV_CODEC_ID_H264) {
e5d40372 1570 if (avctx->ticks_per_frame == 1)
2c541554 1571 h->avctx->time_base.den *= 2;
05e95319
HC		 1572 avctx->ticks_per_frame = 2;
1573 }
1574
b3dc260e
VG		 1575 if (avctx->extradata_size > 0 && avctx->extradata) {
1576 ret = ff_h264_decode_extradata(h);
1577 if (ret < 0)
1578 return ret;
1579 }
05e95319 1580
e5d40372 1581 if (h->sps.bitstream_restriction_flag &&
2c541554
AK		 1582 h->avctx->has_b_frames < h->sps.num_reorder_frames) {
1583 h->avctx->has_b_frames = h->sps.num_reorder_frames;
1584 h->low_delay = 0;
db8cb47d 1585 }
9855b2e3 1586
759001c5
AK		 1587 avctx->internal->allocate_progress = 1;
1588
0da71265
MN		 1589 return 0;
1590}
1591
e5d40372 1592#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
2c541554
AK		 1593#undef REBASE_PICTURE
1594#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
1595 ((pic && pic >= old_ctx->DPB && \
16c22122
DB		 1596 pic < old_ctx->DPB + MAX_PICTURE_COUNT) ? \
1597 &new_ctx->DPB[pic - old_ctx->DPB] : NULL)
e5d40372
DB		 1598
1599static void copy_picture_range(Picture **to, Picture **from, int count,
2c541554
AK		 1600 H264Context *new_base,
1601 H264Context *old_base)
6a9c8594
AS		 1602{
1603 int i;
1604
e5d40372 1605 for (i = 0; i < count; i++) {
6a9c8594 1606 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
2c541554 1607 IN_RANGE(from[i], old_base->DPB,
759001c5 1608 sizeof(Picture) * MAX_PICTURE_COUNT) ||
6a9c8594
AS		 1609 !from[i]));
1610 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1611 }
1612}
1613
58d13cea 1614static int copy_parameter_set(void **to, void **from, int count, int size)
6a9c8594
AS		 1615{
1616 int i;
1617
e5d40372 1618 for (i = 0; i < count; i++) {
58d13cea 1619 if (to[i] && !from[i]) {
e5d40372 1620 av_freep(&to[i]);
58d13cea 1621 } else if (from[i] && !to[i]) {
e5d40372 1622 to[i] = av_malloc(size);
58d13cea
DB		 1623 if (!to[i])
1624 return AVERROR(ENOMEM);
1625 }
6a9c8594 1626
e5d40372
DB		 1627 if (from[i])
1628 memcpy(to[i], from[i], size);
6a9c8594 1629 }
58d13cea
DB		 1630
1631 return 0;
6a9c8594
AS		 1632}
1633
e5d40372
DB		 1634static int decode_init_thread_copy(AVCodecContext *avctx)
1635{
1636 H264Context *h = avctx->priv_data;
6a9c8594 1637
f3a29b75
JR		 1638 if (!avctx->internal->is_copy)
1639 return 0;
6a9c8594
AS		 1640 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1641 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1642
2c541554 1643 h->context_initialized = 0;
0eae920c 1644
6a9c8594
AS		 1645 return 0;
1646}
1647
e5d40372
DB		 1648#define copy_fields(to, from, start_field, end_field) \
1649 memcpy(&to->start_field, &from->start_field, \
1650 (char *)&to->end_field - (char *)&to->start_field)
1651
9e696d2e
JG		 1652static int h264_slice_header_init(H264Context *, int);
1653
1654static int h264_set_parameter_from_sps(H264Context *h);
1655
e5d40372
DB		 1656static int decode_update_thread_context(AVCodecContext *dst,
1657 const AVCodecContext *src)
1658{
1659 H264Context *h = dst->priv_data, *h1 = src->priv_data;
2c541554
AK		 1660 int inited = h->context_initialized, err = 0;
1661 int context_reinitialized = 0;
759001c5 1662 int i, ret;
6a9c8594 1663
2c541554 1664 if (dst == src || !h1->context_initialized)
e5d40372 1665 return 0;
6a9c8594 1666
9e696d2e 1667 if (inited &&
16c22122
DB		 1668 (h->width != h1->width ||
1669 h->height != h1->height ||
1670 h->mb_width != h1->mb_width ||
1671 h->mb_height != h1->mb_height ||
9e696d2e
JG		 1672 h->sps.bit_depth_luma != h1->sps.bit_depth_luma ||
1673 h->sps.chroma_format_idc != h1->sps.chroma_format_idc ||
1674 h->sps.colorspace != h1->sps.colorspace)) {
1675
a157c7f2
JG		 1676 /* set bits_per_raw_sample to the previous value. the check for changed
1677 * bit depth in h264_set_parameter_from_sps() uses it and sets it to
1678 * the current value */
1679 h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
1680
9e696d2e
JG		 1681 av_freep(&h->bipred_scratchpad);
1682
2c541554
AK		 1683 h->width = h1->width;
1684 h->height = h1->height;
1685 h->mb_height = h1->mb_height;
1686 h->mb_width = h1->mb_width;
1687 h->mb_num = h1->mb_num;
1688 h->mb_stride = h1->mb_stride;
9e696d2e
JG		 1689 h->b_stride = h1->b_stride;
1690
1691 if ((err = h264_slice_header_init(h, 1)) < 0) {
2c541554 1692 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
9e696d2e
JG		 1693 return err;
1694 }
2c541554 1695 context_reinitialized = 1;
9e696d2e 1696
2c541554 1697 /* update linesize on resize. The decoder doesn't
25408b2a 1698 * necessarily call h264_frame_start in the new thread */
2c541554
AK		 1699 h->linesize = h1->linesize;
1700 h->uvlinesize = h1->uvlinesize;
9e696d2e
JG		 1701
1702 /* copy block_offset since frame_start may not be called */
1703 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
9e696d2e
JG		 1704 }
1705
e5d40372
DB		 1706 if (!inited) {
1707 for (i = 0; i < MAX_SPS_COUNT; i++)
6a9c8594
AS		 1708 av_freep(h->sps_buffers + i);
1709
e5d40372 1710 for (i = 0; i < MAX_PPS_COUNT; i++)
6a9c8594
AS		 1711 av_freep(h->pps_buffers + i);
1712
2c541554 1713 memcpy(h, h1, sizeof(*h1));
6a9c8594
AS		 1714 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1715 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
2c541554
AK		 1716 memset(&h->er, 0, sizeof(h->er));
1717 memset(&h->me, 0, sizeof(h->me));
e8cafd27
MS		 1718 memset(&h->mb, 0, sizeof(h->mb));
1719 memset(&h->mb_luma_dc, 0, sizeof(h->mb_luma_dc));
1720 memset(&h->mb_padding, 0, sizeof(h->mb_padding));
2c541554
AK		 1721 h->context_initialized = 0;
1722
759001c5 1723 memset(&h->cur_pic, 0, sizeof(h->cur_pic));
598ce4ab 1724 av_frame_unref(&h->cur_pic.f);
759001c5 1725 h->cur_pic.tf.f = &h->cur_pic.f;
2c541554 1726
16c22122
DB		 1727 h->avctx = dst;
1728 h->DPB = NULL;
759001c5 1729 h->qscale_table_pool = NULL;
16c22122
DB		 1730 h->mb_type_pool = NULL;
1731 h->ref_index_pool = NULL;
1732 h->motion_val_pool = NULL;
2c541554 1733
b3dc260e
VG		 1734 ret = ff_h264_alloc_tables(h);
1735 if (ret < 0) {
bac3ab13 1736 av_log(dst, AV_LOG_ERROR, "Could not allocate memory for h264\n");
b3dc260e 1737 return ret;
bac3ab13 1738 }
c1076d84
VG		 1739 ret = context_init(h);
1740 if (ret < 0) {
1741 av_log(dst, AV_LOG_ERROR, "context_init() failed.\n");
1742 return ret;
1743 }
6a9c8594 1744
e5d40372
DB		 1745 for (i = 0; i < 2; i++) {
1746 h->rbsp_buffer[i] = NULL;
6a9c8594
AS		 1747 h->rbsp_buffer_size[i] = 0;
1748 }
a394959b 1749 h->bipred_scratchpad = NULL;
2c541554 1750 h->edge_emu_buffer = NULL;
6a9c8594
AS		 1751
1752 h->thread_context[0] = h;
1753
2c541554 1754 h->context_initialized = 1;
6a9c8594
AS		 1755 }
1756
2c541554
AK		 1757 h->avctx->coded_height = h1->avctx->coded_height;
1758 h->avctx->coded_width = h1->avctx->coded_width;
1759 h->avctx->width = h1->avctx->width;
1760 h->avctx->height = h1->avctx->height;
1761 h->coded_picture_number = h1->coded_picture_number;
1762 h->first_field = h1->first_field;
1763 h->picture_structure = h1->picture_structure;
1764 h->qscale = h1->qscale;
1765 h->droppable = h1->droppable;
1766 h->data_partitioning = h1->data_partitioning;
1767 h->low_delay = h1->low_delay;
1768
759001c5
AK		 1769 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1770 unref_picture(h, &h->DPB[i]);
a553c6a3 1771 if (h1->DPB[i].f.buf[0] &&
759001c5
AK		 1772 (ret = ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
1773 return ret;
1774 }
2c541554 1775
16c22122 1776 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
759001c5
AK		 1777 unref_picture(h, &h->cur_pic);
1778 if ((ret = ref_picture(h, &h->cur_pic, &h1->cur_pic)) < 0)
1779 return ret;
2c541554
AK		 1780
1781 h->workaround_bugs = h1->workaround_bugs;
1782 h->low_delay = h1->low_delay;
1783 h->droppable = h1->droppable;
1784
a394959b
JG		 1785 /* frame_start may not be called for the next thread (if it's decoding
1786 * a bottom field) so this has to be allocated here */
2c541554
AK		 1787 err = alloc_scratch_buffers(h, h1->linesize);
1788 if (err < 0)
1789 return err;
a394959b 1790
e5d40372
DB		 1791 // extradata/NAL handling
1792 h->is_avc = h1->is_avc;
6a9c8594 1793
e5d40372 1794 // SPS/PPS
58d13cea
DB		 1795 if ((ret = copy_parameter_set((void **)h->sps_buffers,
1796 (void **)h1->sps_buffers,
1797 MAX_SPS_COUNT, sizeof(SPS))) < 0)
1798 return ret;
e5d40372 1799 h->sps = h1->sps;
58d13cea
DB		 1800 if ((ret = copy_parameter_set((void **)h->pps_buffers,
1801 (void **)h1->pps_buffers,
1802 MAX_PPS_COUNT, sizeof(PPS))) < 0)
1803 return ret;
e5d40372 1804 h->pps = h1->pps;
6a9c8594 1805
e5d40372
DB		 1806 // Dequantization matrices
1807 // FIXME these are big - can they be only copied when PPS changes?
6a9c8594
AS		 1808 copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1809
e5d40372
DB		 1810 for (i = 0; i < 6; i++)
1811 h->dequant4_coeff[i] = h->dequant4_buffer[0] +
1812 (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
6a9c8594 1813
e5d40372
DB		 1814 for (i = 0; i < 6; i++)
1815 h->dequant8_coeff[i] = h->dequant8_buffer[0] +
1816 (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
6a9c8594
AS		 1817
1818 h->dequant_coeff_pps = h1->dequant_coeff_pps;
1819
e5d40372 1820 // POC timing
6a9c8594
AS		 1821 copy_fields(h, h1, poc_lsb, redundant_pic_count);
1822
e5d40372 1823 // reference lists
6a9c8594
AS		 1824 copy_fields(h, h1, short_ref, cabac_init_idc);
1825
2c541554
AK		 1826 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
1827 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
e5d40372 1828 copy_picture_range(h->delayed_pic, h1->delayed_pic,
2c541554 1829 MAX_DELAYED_PIC_COUNT + 2, h, h1);
6a9c8594
AS		 1830
1831 h->last_slice_type = h1->last_slice_type;
1832
2c541554
AK		 1833 if (context_reinitialized)
1834 h264_set_parameter_from_sps(h);
1835
1836 if (!h->cur_pic_ptr)
e5d40372 1837 return 0;
6a9c8594 1838
2c541554 1839 if (!h->droppable) {
12fe7594 1840 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
e5d40372
DB		 1841 h->prev_poc_msb = h->poc_msb;
1842 h->prev_poc_lsb = h->poc_lsb;
6a9c8594 1843 }
e5d40372
DB		 1844 h->prev_frame_num_offset = h->frame_num_offset;
1845 h->prev_frame_num = h->frame_num;
1846 h->outputed_poc = h->next_outputed_poc;
6a9c8594 1847
28096e0a
JS		 1848 h->recovery_frame = h1->recovery_frame;
1849 h->frame_recovered = h1->frame_recovered;
1850
12fe7594 1851 return err;
6a9c8594
AS		 1852}
1853
25408b2a 1854static int h264_frame_start(H264Context *h)
e5d40372 1855{
2c541554
AK		 1856 Picture *pic;
1857 int i, ret;
6e3ef511 1858 const int pixel_shift = h->pixel_shift;
0da71265 1859
2c541554
AK		 1860 release_unused_pictures(h, 1);
1861 h->cur_pic_ptr = NULL;
1862
1863 i = find_unused_picture(h);
1864 if (i < 0) {
1865 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1866 return i;
1867 }
1868 pic = &h->DPB[i];
1869
16c22122 1870 pic->reference = h->droppable ? 0 : h->picture_structure;
2c541554
AK		 1871 pic->f.coded_picture_number = h->coded_picture_number++;
1872 pic->field_picture = h->picture_structure != PICT_FRAME;
3a22d7fa 1873 /*
2c541554
AK		 1874 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
1875 * in later.
3a22d7fa
JD		 1876 * See decode_nal_units().
1877 */
2c541554
AK		 1878 pic->f.key_frame = 0;
1879 pic->mmco_reset = 0;
28096e0a 1880 pic->recovered = 0;
2c541554
AK		 1881
1882 if ((ret = alloc_picture(h, pic)) < 0)
1883 return ret;
1884
1885 h->cur_pic_ptr = pic;
759001c5
AK		 1886 unref_picture(h, &h->cur_pic);
1887 if ((ret = ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
1888 return ret;
2c541554 1889
0b499c9b
RB		 1890 if (CONFIG_ERROR_RESILIENCE)
1891 ff_er_frame_start(&h->er);
0da71265 1892
2c541554 1893 assert(h->linesize && h->uvlinesize);
0da71265 1894
e5d40372 1895 for (i = 0; i < 16; i++) {
2c541554
AK		 1896 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
1897 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
0da71265 1898 }
e5d40372
DB		 1899 for (i = 0; i < 16; i++) {
1900 h->block_offset[16 + i] =
2c541554 1901 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
e5d40372 1902 h->block_offset[48 + 16 + i] =
2c541554 1903 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
0da71265
MN		 1904 }
1905
934b0821
LM		 1906 /* can't be in alloc_tables because linesize isn't known there.
1907 * FIXME: redo bipred weight to not require extra buffer? */
2c541554
AK		 1908 for (i = 0; i < h->slice_context_count; i++)
1909 if (h->thread_context[i]) {
1910 ret = alloc_scratch_buffers(h->thread_context[i], h->linesize);
1911 if (ret < 0)
1912 return ret;
1913 }
e5d40372
DB		 1914
1915 /* Some macroblocks can be accessed before they're available in case
1916 * of lost slices, MBAFF or threading. */
1917 memset(h->slice_table, -1,
2c541554 1918 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
e5d40372
DB		 1919
1920 // s->decode = (s->flags & CODEC_FLAG_PSNR) || !s->encoding ||
1921 // s->current_picture.f.reference /* || h->contains_intra */ || 1;
1922
1923 /* We mark the current picture as non-reference after allocating it, so
1924 * that if we break out due to an error it can be released automatically
1925 * in the next ff_MPV_frame_start().
f08fefc4
AK		 1926 */
1927 h->cur_pic_ptr->reference = 0;
357282c6 1928
2c541554 1929 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
6a9c8594
AS		 1930
1931 h->next_output_pic = NULL;
1932
2c541554 1933 assert(h->cur_pic_ptr->long_ref == 0);
357282c6 1934
af8aa846 1935 return 0;
0da71265
MN		 1936}
1937
6a9c8594 1938/**
e5d40372
DB		 1939 * Run setup operations that must be run after slice header decoding.
1940 * This includes finding the next displayed frame.
1941 *
1942 * @param h h264 master context
1943 * @param setup_finished enough NALs have been read that we can call
1944 * ff_thread_finish_setup()
1945 */
1946static void decode_postinit(H264Context *h, int setup_finished)
1947{
2c541554
AK		 1948 Picture *out = h->cur_pic_ptr;
1949 Picture *cur = h->cur_pic_ptr;
6a9c8594 1950 int i, pics, out_of_order, out_idx;
adedd840 1951 int invalid = 0, cnt = 0;
6a9c8594 1952
16c22122 1953 h->cur_pic_ptr->f.pict_type = h->pict_type;
6a9c8594 1954
e5d40372
DB		 1955 if (h->next_output_pic)
1956 return;
6a9c8594 1957
e5d40372
DB		 1958 if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
1959 /* FIXME: if we have two PAFF fields in one packet, we can't start
1960 * the next thread here. If we have one field per packet, we can.
1961 * The check in decode_nal_units() is not good enough to find this
1962 * yet, so we assume the worst for now. */
1963 // if (setup_finished)
2c541554 1964 // ff_thread_finish_setup(h->avctx);
6a9c8594
AS		 1965 return;
1966 }
1967
657ccb5a
DB		 1968 cur->f.interlaced_frame = 0;
1969 cur->f.repeat_pict = 0;
6a9c8594
AS		 1970
1971 /* Signal interlacing information externally. */
e5d40372
DB		 1972 /* Prioritize picture timing SEI information over used
1973 * decoding process if it exists. */
6a9c8594 1974
e5d40372
DB		 1975 if (h->sps.pic_struct_present_flag) {
1976 switch (h->sei_pic_struct) {
6a9c8594
AS		 1977 case SEI_PIC_STRUCT_FRAME:
1978 break;
1979 case SEI_PIC_STRUCT_TOP_FIELD:
1980 case SEI_PIC_STRUCT_BOTTOM_FIELD:
657ccb5a 1981 cur->f.interlaced_frame = 1;
6a9c8594
AS		 1982 break;
1983 case SEI_PIC_STRUCT_TOP_BOTTOM:
1984 case SEI_PIC_STRUCT_BOTTOM_TOP:
a6931d8e 1985 if (FIELD_OR_MBAFF_PICTURE(h))
657ccb5a 1986 cur->f.interlaced_frame = 1;
6a9c8594
AS		 1987 else
1988 // try to flag soft telecine progressive
657ccb5a 1989 cur->f.interlaced_frame = h->prev_interlaced_frame;
6a9c8594
AS		 1990 break;
1991 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1992 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
e5d40372
DB		 1993 /* Signal the possibility of telecined film externally
1994 * (pic_struct 5,6). From these hints, let the applications
1995 * decide if they apply deinterlacing. */
657ccb5a 1996 cur->f.repeat_pict = 1;
6a9c8594
AS		 1997 break;
1998 case SEI_PIC_STRUCT_FRAME_DOUBLING:
657ccb5a 1999 cur->f.repeat_pict = 2;
6a9c8594
AS		 2000 break;
2001 case SEI_PIC_STRUCT_FRAME_TRIPLING:
657ccb5a 2002 cur->f.repeat_pict = 4;
6a9c8594
AS		 2003 break;
2004 }
2005
e5d40372
DB		 2006 if ((h->sei_ct_type & 3) &&
2007 h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
657ccb5a 2008 cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0;
e5d40372 2009 } else {
6a9c8594 2010 /* Derive interlacing flag from used decoding process. */
a6931d8e 2011 cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
6a9c8594 2012 }
657ccb5a 2013 h->prev_interlaced_frame = cur->f.interlaced_frame;
6a9c8594 2014
e5d40372 2015 if (cur->field_poc[0] != cur->field_poc[1]) {
6a9c8594 2016 /* Derive top_field_first from field pocs. */
657ccb5a 2017 cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1];
e5d40372 2018 } else {
657ccb5a 2019 if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) {
e5d40372
DB		 2020 /* Use picture timing SEI information. Even if it is a
2021 * information of a past frame, better than nothing. */
2022 if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
2023 h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
657ccb5a 2024 cur->f.top_field_first = 1;
6a9c8594 2025 else
657ccb5a 2026 cur->f.top_field_first = 0;
e5d40372 2027 } else {
6a9c8594 2028 /* Most likely progressive */
657ccb5a 2029 cur->f.top_field_first = 0;
6a9c8594
AS		 2030 }
2031 }
2032
5b10ef72
VG		 2033 if (h->sei_frame_packing_present &&
2034 h->frame_packing_arrangement_type >= 0 &&
2035 h->frame_packing_arrangement_type <= 6 &&
2036 h->content_interpretation_type > 0 &&
2037 h->content_interpretation_type < 3) {
2038 AVStereo3D *stereo = av_stereo3d_create_side_data(&cur->f);
2039 if (!stereo)
2040 return;
2041
2042 switch (h->frame_packing_arrangement_type) {
2043 case 0:
2044 stereo->type = AV_STEREO3D_CHECKERBOARD;
2045 break;
2046 case 1:
2047 stereo->type = AV_STEREO3D_LINES;
2048 break;
2049 case 2:
2050 stereo->type = AV_STEREO3D_COLUMNS;
2051 break;
2052 case 3:
2053 if (h->quincunx_subsampling)
2054 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
2055 else
2056 stereo->type = AV_STEREO3D_SIDEBYSIDE;
2057 break;
2058 case 4:
2059 stereo->type = AV_STEREO3D_TOPBOTTOM;
2060 break;
2061 case 5:
2062 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
2063 break;
2064 case 6:
2065 stereo->type = AV_STEREO3D_2D;
2066 break;
2067 }
2068
2069 if (h->content_interpretation_type == 2)
2070 stereo->flags = AV_STEREO3D_FLAG_INVERT;
2071 }
2072
e5d40372 2073 // FIXME do something with unavailable reference frames
6a9c8594
AS		 2074
2075 /* Sort B-frames into display order */
2076
e5d40372 2077 if (h->sps.bitstream_restriction_flag &&
2c541554
AK		 2078 h->avctx->has_b_frames < h->sps.num_reorder_frames) {
2079 h->avctx->has_b_frames = h->sps.num_reorder_frames;
2080 h->low_delay = 0;
6a9c8594
AS		 2081 }
2082
2c541554 2083 if (h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
e5d40372 2084 !h->sps.bitstream_restriction_flag) {
2c541554
AK		 2085 h->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1;
2086 h->low_delay = 0;
6a9c8594
AS		 2087 }
2088
2089 pics = 0;
e5d40372
DB		 2090 while (h->delayed_pic[pics])
2091 pics++;
6a9c8594
AS		 2092
2093 assert(pics <= MAX_DELAYED_PIC_COUNT);
2094
2095 h->delayed_pic[pics++] = cur;
759001c5
AK		 2096 if (cur->reference == 0)
2097 cur->reference = DELAYED_PIC_REF;
6a9c8594 2098
adedd840
RB		 2099 /* Frame reordering. This code takes pictures from coding order and sorts
2100 * them by their incremental POC value into display order. It supports POC
2101 * gaps, MMCO reset codes and random resets.
2102 * A "display group" can start either with a IDR frame (f.key_frame = 1),
2103 * and/or can be closed down with a MMCO reset code. In sequences where
2104 * there is no delay, we can't detect that (since the frame was already
2105 * output to the user), so we also set h->mmco_reset to detect the MMCO
2106 * reset code.
2c541554 2107 * FIXME: if we detect insufficient delays (as per h->avctx->has_b_frames),
adedd840
RB		 2108 * we increase the delay between input and output. All frames affected by
2109 * the lag (e.g. those that should have been output before another frame
2110 * that we already returned to the user) will be dropped. This is a bug
2111 * that we will fix later. */
2112 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
2113 cnt += out->poc < h->last_pocs[i];
2114 invalid += out->poc == INT_MIN;
2115 }
e5d40372
DB		 2116 if (!h->mmco_reset && !cur->f.key_frame &&
2117 cnt + invalid == MAX_DELAYED_PIC_COUNT && cnt > 0) {
adedd840
RB		 2118 h->mmco_reset = 2;
2119 if (pics > 1)
2120 h->delayed_pic[pics - 2]->mmco_reset = 2;
2121 }
2122 if (h->mmco_reset || cur->f.key_frame) {
2123 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
2124 h->last_pocs[i] = INT_MIN;
2125 cnt = 0;
2126 invalid = MAX_DELAYED_PIC_COUNT;
2127 }
e5d40372 2128 out = h->delayed_pic[0];
6a9c8594 2129 out_idx = 0;
e5d40372
DB		 2130 for (i = 1; i < MAX_DELAYED_PIC_COUNT &&
2131 h->delayed_pic[i] &&
2132 !h->delayed_pic[i - 1]->mmco_reset &&
2133 !h->delayed_pic[i]->f.key_frame;
2134 i++)
2135 if (h->delayed_pic[i]->poc < out->poc) {
2136 out = h->delayed_pic[i];
6a9c8594
AS		 2137 out_idx = i;
2138 }
2c541554 2139 if (h->avctx->has_b_frames == 0 &&
e5d40372 2140 (h->delayed_pic[0]->f.key_frame || h->mmco_reset))
adedd840 2141 h->next_outputed_poc = INT_MIN;
e5d40372
DB		 2142 out_of_order = !out->f.key_frame && !h->mmco_reset &&
2143 (out->poc < h->next_outputed_poc);
6a9c8594 2144
e5d40372 2145 if (h->sps.bitstream_restriction_flag &&
2c541554
AK		 2146 h->avctx->has_b_frames >= h->sps.num_reorder_frames) {
2147 } else if (out_of_order && pics - 1 == h->avctx->has_b_frames &&
2148 h->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) {
ea2bb12e 2149 if (invalid + cnt < MAX_DELAYED_PIC_COUNT) {
2c541554 2150 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, cnt);
ea2bb12e 2151 }
2c541554
AK		 2152 h->low_delay = 0;
2153 } else if (h->low_delay &&
e5d40372
DB		 2154 ((h->next_outputed_poc != INT_MIN &&
2155 out->poc > h->next_outputed_poc + 2) ||
ea2bb12e 2156 cur->f.pict_type == AV_PICTURE_TYPE_B)) {
2c541554
AK		 2157 h->low_delay = 0;
2158 h->avctx->has_b_frames++;
6a9c8594
AS		 2159 }
2160
2c541554 2161 if (pics > h->avctx->has_b_frames) {
759001c5 2162 out->reference &= ~DELAYED_PIC_REF;
e5d40372
DB		 2163 // for frame threading, the owner must be the second field's thread or
2164 // else the first thread can release the picture and reuse it unsafely
e5d40372
DB		 2165 for (i = out_idx; h->delayed_pic[i]; i++)
2166 h->delayed_pic[i] = h->delayed_pic[i + 1];
2167 }
2168 memmove(h->last_pocs, &h->last_pocs[1],
2169 sizeof(*h->last_pocs) * (MAX_DELAYED_PIC_COUNT - 1));
adedd840 2170 h->last_pocs[MAX_DELAYED_PIC_COUNT - 1] = cur->poc;
2c541554 2171 if (!out_of_order && pics > h->avctx->has_b_frames) {
6a9c8594 2172 h->next_output_pic = out;
adedd840
RB		 2173 if (out->mmco_reset) {
2174 if (out_idx > 0) {
e5d40372 2175 h->next_outputed_poc = out->poc;
adedd840
RB		 2176 h->delayed_pic[out_idx - 1]->mmco_reset = out->mmco_reset;
2177 } else {
2178 h->next_outputed_poc = INT_MIN;
2179 }
2180 } else {
0b4c3232
RB		 2181 if (out_idx == 0 && pics > 1 && h->delayed_pic[0]->f.key_frame) {
2182 h->next_outputed_poc = INT_MIN;
2183 } else {
2184 h->next_outputed_poc = out->poc;
2185 }
adedd840
RB		 2186 }
2187 h->mmco_reset = 0;
e5d40372 2188 } else {
2c541554 2189 av_log(h->avctx, AV_LOG_DEBUG, "no picture\n");
6a9c8594
AS		 2190 }
2191
28096e0a
JS		 2192 if (h->next_output_pic) {
2193 if (h->next_output_pic->recovered) {
2194 // We have reached an recovery point and all frames after it in
2195 // display order are "recovered".
2196 h->frame_recovered |= FRAME_RECOVERED_SEI;
2197 }
2198 h->next_output_pic->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
2199 }
2200
05fa79b8 2201 if (setup_finished && !h->avctx->hwaccel)
2c541554 2202 ff_thread_finish_setup(h->avctx);
6a9c8594
AS		 2203}
2204
76741b0e
BC		 2205static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y,
2206 uint8_t *src_cb, uint8_t *src_cr,
e5d40372
DB		 2207 int linesize, int uvlinesize,
2208 int simple)
76741b0e 2209{
0b69d625 2210 uint8_t *top_border;
5f7f9719 2211 int top_idx = 1;
6e3ef511 2212 const int pixel_shift = h->pixel_shift;
23e85be5 2213 int chroma444 = CHROMA444(h);
e962bd08 2214 int chroma422 = CHROMA422(h);
115329f1 2215
e5d40372 2216 src_y -= linesize;
53c05b1e
MN		 2217 src_cb -= uvlinesize;
2218 src_cr -= uvlinesize;
2219
7bece9b2 2220 if (!simple && FRAME_MBAFF(h)) {
2c541554 2221 if (h->mb_y & 1) {
82313eaa 2222 if (!MB_MBAFF(h)) {
2c541554 2223 top_border = h->top_borders[0][h->mb_x];
e5d40372 2224 AV_COPY128(top_border, src_y + 15 * linesize);
6e3ef511 2225 if (pixel_shift)
e5d40372 2226 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
2c541554 2227 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
e5d40372
DB		 2228 if (chroma444) {
2229 if (pixel_shift) {
2230 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
2231 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
2232 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
2233 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
c90b9442 2234 } else {
e5d40372
DB		 2235 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
2236 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
c90b9442 2237 }
e5d40372 2238 } else if (chroma422) {
76741b0e 2239 if (pixel_shift) {
e5d40372
DB		 2240 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
2241 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
76741b0e 2242 } else {
e5d40372
DB		 2243 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
2244 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
76741b0e 2245 }
6e3ef511 2246 } else {
c90b9442 2247 if (pixel_shift) {
e5d40372
DB		 2248 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
2249 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
c90b9442 2250 } else {
e5d40372
DB		 2251 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
2252 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
c90b9442 2253 }
6e3ef511 2254 }
5f7f9719
MN		 2255 }
2256 }
82313eaa 2257 } else if (MB_MBAFF(h)) {
c988f975 2258 top_idx = 0;
e5d40372 2259 } else
c988f975 2260 return;
5f7f9719
MN		 2261 }
2262
2c541554 2263 top_border = h->top_borders[top_idx][h->mb_x];
09f21198 2264 /* There are two lines saved, the line above the top macroblock
e5d40372
DB		 2265 * of a pair, and the line above the bottom macroblock. */
2266 AV_COPY128(top_border, src_y + 16 * linesize);
6e3ef511 2267 if (pixel_shift)
e5d40372
DB		 2268 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
2269
2c541554 2270 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
e5d40372
DB		 2271 if (chroma444) {
2272 if (pixel_shift) {
2273 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
2274 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
2275 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
2276 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
c90b9442 2277 } else {
e5d40372
DB		 2278 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
2279 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
c90b9442 2280 }
e5d40372 2281 } else if (chroma422) {
76741b0e 2282 if (pixel_shift) {
e5d40372
DB		 2283 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
2284 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
76741b0e 2285 } else {
e5d40372
DB		 2286 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
2287 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
76741b0e 2288 }
6e3ef511 2289 } else {
c90b9442 2290 if (pixel_shift) {
e5d40372
DB		 2291 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
2292 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
c90b9442 2293 } else {
e5d40372
DB		 2294 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
2295 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
c90b9442 2296 }
6e3ef511 2297 }
53c05b1e
MN		 2298 }
2299}
2300
bbdd52ed 2301static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
e5d40372
DB		 2302 uint8_t *src_cb, uint8_t *src_cr,
2303 int linesize, int uvlinesize,
2304 int xchg, int chroma444,
2305 int simple, int pixel_shift)
2306{
4e987f82 2307 int deblock_topleft;
b69378e2 2308 int deblock_top;
5f7f9719 2309 int top_idx = 1;
1e4f1c56
AS		 2310 uint8_t *top_border_m1;
2311 uint8_t *top_border;
5f7f9719 2312
7bece9b2 2313 if (!simple && FRAME_MBAFF(h)) {
2c541554 2314 if (h->mb_y & 1) {
82313eaa 2315 if (!MB_MBAFF(h))
c988f975 2316 return;
e5d40372 2317 } else {
82313eaa 2318 top_idx = MB_MBAFF(h) ? 0 : 1;
5f7f9719 2319 }
5f7f9719 2320 }
b69378e2 2321
e5d40372 2322 if (h->deblocking_filter == 2) {
2c541554 2323 deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num;
4e987f82 2324 deblock_top = h->top_type;
b69378e2 2325 } else {
2c541554 2326 deblock_topleft = (h->mb_x > 0);
da6be8fc 2327 deblock_top = (h->mb_y > !!MB_FIELD(h));
b69378e2 2328 }
53c05b1e 2329
e5d40372 2330 src_y -= linesize + 1 + pixel_shift;
6e3ef511
OA		 2331 src_cb -= uvlinesize + 1 + pixel_shift;
2332 src_cr -= uvlinesize + 1 + pixel_shift;
53c05b1e 2333
2c541554
AK		 2334 top_border_m1 = h->top_borders[top_idx][h->mb_x - 1];
2335 top_border = h->top_borders[top_idx][h->mb_x];
1e4f1c56 2336
e5d40372
DB		 2337#define XCHG(a, b, xchg) \
2338 if (pixel_shift) { \
2339 if (xchg) { \
2340 AV_SWAP64(b + 0, a + 0); \
2341 AV_SWAP64(b + 8, a + 8); \
2342 } else { \
2343 AV_COPY128(b, a); \
2344 } \
2345 } else if (xchg) \
2346 AV_SWAP64(b, a); \
2347 else \
2348 AV_COPY64(b, a);
2349
2350 if (deblock_top) {
2351 if (deblock_topleft) {
2352 XCHG(top_border_m1 + (8 << pixel_shift),
2353 src_y - (7 << pixel_shift), 1);
c988f975 2354 }
6e3ef511
OA		 2355 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
2356 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
2c541554
AK		 2357 if (h->mb_x + 1 < h->mb_width) {
2358 XCHG(h->top_borders[top_idx][h->mb_x + 1],
e5d40372 2359 src_y + (17 << pixel_shift), 1);
43efd19a 2360 }
53c05b1e 2361 }
2c541554 2362 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
e5d40372
DB		 2363 if (chroma444) {
2364 if (deblock_topleft) {
c90b9442
JGG		 2365 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
2366 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
2367 }
2368 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
2369 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
2370 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
2371 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
2c541554
AK		 2372 if (h->mb_x + 1 < h->mb_width) {
2373 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
2374 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
c90b9442
JGG		 2375 }
2376 } else {
e5d40372
DB		 2377 if (deblock_top) {
2378 if (deblock_topleft) {
c90b9442
JGG		 2379 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
2380 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
2381 }
e5d40372
DB		 2382 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
2383 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
c988f975 2384 }
53c05b1e 2385 }
53c05b1e
MN		 2386 }
2387}
2388
88bd7fdc 2389static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
e5d40372
DB		 2390 int index)
2391{
6e3ef511 2392 if (high_bit_depth) {
e5d40372 2393 return AV_RN32A(((int32_t *)mb) + index);
6e3ef511
OA		 2394 } else
2395 return AV_RN16A(mb + index);
2396}
2397
88bd7fdc 2398static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
e5d40372
DB		 2399 int index, int value)
2400{
6e3ef511 2401 if (high_bit_depth) {
e5d40372 2402 AV_WN32A(((int32_t *)mb) + index, value);
6e3ef511
OA		 2403 } else
2404 AV_WN16A(mb + index, value);
2405}
2406
e5d40372
DB		 2407static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
2408 int mb_type, int is_h264,
2409 int simple,
2410 int transform_bypass,
2411 int pixel_shift,
2412 int *block_offset,
2413 int linesize,
2414 uint8_t *dest_y, int p)
c90b9442 2415{
88bd7fdc
DB		 2416 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
2417 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
c90b9442 2418 int i;
2c541554 2419 int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1];
e5d40372
DB		 2420 block_offset += 16 * p;
2421 if (IS_INTRA4x4(mb_type)) {
2491f9ee
AK		 2422 if (IS_8x8DCT(mb_type)) {
2423 if (transform_bypass) {
16c22122
DB		 2424 idct_dc_add =
2425 idct_add = h->h264dsp.h264_add_pixels8_clear;
2491f9ee
AK		 2426 } else {
2427 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
2428 idct_add = h->h264dsp.h264_idct8_add;
2429 }
2430 for (i = 0; i < 16; i += 4) {
2431 uint8_t *const ptr = dest_y + block_offset[i];
2432 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
2433 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
2434 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
e5d40372 2435 } else {
2491f9ee
AK		 2436 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
2437 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
2438 (h->topright_samples_available << i) & 0x4000, linesize);
2439 if (nnz) {
2440 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
2441 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2442 else
2443 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
c90b9442
JGG		 2444 }
2445 }
2491f9ee
AK		 2446 }
2447 } else {
2448 if (transform_bypass) {
2449 idct_dc_add =
62844c3f 2450 idct_add = h->h264dsp.h264_add_pixels4_clear;
e5d40372 2451 } else {
2491f9ee
AK		 2452 idct_dc_add = h->h264dsp.h264_idct_dc_add;
2453 idct_add = h->h264dsp.h264_idct_add;
2454 }
2455 for (i = 0; i < 16; i++) {
2456 uint8_t *const ptr = dest_y + block_offset[i];
2457 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
c90b9442 2458
2491f9ee
AK		 2459 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
2460 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2461 } else {
2462 uint8_t *topright;
2463 int nnz, tr;
2464 uint64_t tr_high;
2465 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
2466 const int topright_avail = (h->topright_samples_available << i) & 0x8000;
2c541554 2467 assert(h->mb_y || linesize <= block_offset[i]);
2491f9ee
AK		 2468 if (!topright_avail) {
2469 if (pixel_shift) {
2470 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
2471 topright = (uint8_t *)&tr_high;
2472 } else {
2473 tr = ptr[3 - linesize] * 0x01010101u;
2474 topright = (uint8_t *)&tr;
2475 }
e5d40372 2476 } else
2491f9ee
AK		 2477 topright = ptr + (4 << pixel_shift) - linesize;
2478 } else
2479 topright = NULL;
2480
2481 h->hpc.pred4x4[dir](ptr, topright, linesize);
2482 nnz = h->non_zero_count_cache[scan8[i + p * 16]];
2483 if (nnz) {
2484 if (is_h264) {
2485 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
2486 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2487 else
2488 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2489 } else if (CONFIG_SVQ3_DECODER)
2490 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
c90b9442
JGG		 2491 }
2492 }
2493 }
2494 }
e5d40372
DB		 2495 } else {
2496 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);
2497 if (is_h264) {
2498 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
2499 if (!transform_bypass)
2500 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),
2501 h->mb_luma_dc[p],
2502 h->dequant4_coeff[p][qscale][0]);
2503 else {
2504 static const uint8_t dc_mapping[16] = {
2505 0 * 16, 1 * 16, 4 * 16, 5 * 16,
2506 2 * 16, 3 * 16, 6 * 16, 7 * 16,
2507 8 * 16, 9 * 16, 12 * 16, 13 * 16,
16c22122
DB		 2508 10 * 16, 11 * 16, 14 * 16, 15 * 16
2509 };
e5d40372
DB		 2510 for (i = 0; i < 16; i++)
2511 dctcoef_set(h->mb + (p * 256 << pixel_shift),
2512 pixel_shift, dc_mapping[i],
2513 dctcoef_get(h->mb_luma_dc[p],
2514 pixel_shift, i));
c90b9442
JGG		 2515 }
2516 }
301fb921 2517 } else if (CONFIG_SVQ3_DECODER)
e5d40372
DB		 2518 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
2519 h->mb_luma_dc[p], qscale);
c90b9442
JGG		 2520 }
2521}
2522
e5d40372
DB		 2523static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,
2524 int is_h264, int simple,
2525 int transform_bypass,
2526 int pixel_shift,
2527 int *block_offset,
2528 int linesize,
2529 uint8_t *dest_y, int p)
c90b9442 2530{
88bd7fdc 2531 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
c90b9442 2532 int i;
e5d40372
DB		 2533 block_offset += 16 * p;
2534 if (!IS_INTRA4x4(mb_type)) {
2535 if (is_h264) {
2536 if (IS_INTRA16x16(mb_type)) {
2537 if (transform_bypass) {
2538 if (h->sps.profile_idc == 244 &&
2539 (h->intra16x16_pred_mode == VERT_PRED8x8 ||
2540 h->intra16x16_pred_mode == HOR_PRED8x8)) {
2541 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,
2542 h->mb + (p * 256 << pixel_shift),
2543 linesize);
2544 } else {
2545 for (i = 0; i < 16; i++)
2546 if (h->non_zero_count_cache[scan8[i + p * 16]] ||
2547 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
62844c3f
RB		 2548 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
2549 h->mb + (i * 16 + p * 256 << pixel_shift),
2550 linesize);
c90b9442 2551 }
e5d40372
DB		 2552 } else {
2553 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
2554 h->mb + (p * 256 << pixel_shift),
2555 linesize,
2556 h->non_zero_count_cache + p * 5 * 8);
c90b9442 2557 }
e5d40372
DB		 2558 } else if (h->cbp & 15) {
2559 if (transform_bypass) {
c90b9442 2560 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
62844c3f
RB		 2561 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
2562 : h->h264dsp.h264_add_pixels4_clear;
e5d40372
DB		 2563 for (i = 0; i < 16; i += di)
2564 if (h->non_zero_count_cache[scan8[i + p * 16]])
2565 idct_add(dest_y + block_offset[i],
2566 h->mb + (i * 16 + p * 256 << pixel_shift),
2567 linesize);
2568 } else {
2569 if (IS_8x8DCT(mb_type))
2570 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
2571 h->mb + (p * 256 << pixel_shift),
2572 linesize,
2573 h->non_zero_count_cache + p * 5 * 8);
2574 else
2575 h->h264dsp.h264_idct_add16(dest_y, block_offset,
2576 h->mb + (p * 256 << pixel_shift),
2577 linesize,
2578 h->non_zero_count_cache + p * 5 * 8);
c90b9442
JGG		 2579 }
2580 }
301fb921 2581 } else if (CONFIG_SVQ3_DECODER) {
e5d40372
DB		 2582 for (i = 0; i < 16; i++)
2583 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {
2584 // FIXME benchmark weird rule, & below
2585 uint8_t *const ptr = dest_y + block_offset[i];
2586 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,
2c541554 2587 h->qscale, IS_INTRA(mb_type) ? 1 : 0);
c90b9442 2588 }
c90b9442
JGG		 2589 }
2590 }
2591}
2592
28fff0d9
MR		 2593#define BITS 8
2594#define SIMPLE 1
2595#include "h264_mb_template.c"
e5d40372 2596
28fff0d9
MR		 2597#undef BITS
2598#define BITS 16
2599#include "h264_mb_template.c"
bd91fee3 2600
28fff0d9
MR		 2601#undef SIMPLE
2602#define SIMPLE 0
2603#include "h264_mb_template.c"
c90b9442 2604
e5d40372
DB		 2605void ff_h264_hl_decode_mb(H264Context *h)
2606{
e5d40372 2607 const int mb_xy = h->mb_xy;
759001c5 2608 const int mb_type = h->cur_pic.mb_type[mb_xy];
16c22122
DB		 2609 int is_complex = CONFIG_SMALL || h->is_complex ||
2610 IS_INTRA_PCM(mb_type) || h->qscale == 0;
bd91fee3 2611
23e85be5 2612 if (CHROMA444(h)) {
e5d40372 2613 if (is_complex || h->pixel_shift)
c90b9442
JGG		 2614 hl_decode_mb_444_complex(h);
2615 else
28fff0d9 2616 hl_decode_mb_444_simple_8(h);
c90b9442 2617 } else if (is_complex) {
bd91fee3 2618 hl_decode_mb_complex(h);
6e3ef511
OA		 2619 } else if (h->pixel_shift) {
2620 hl_decode_mb_simple_16(h);
2621 } else
2622 hl_decode_mb_simple_8(h);
bd91fee3
AS		 2623}
2624
4baba6c8 2625int ff_pred_weight_table(H264Context *h)
e5d40372 2626{
0da71265 2627 int list, i;
9f2d1b4f 2628 int luma_def, chroma_def;
115329f1 2629
e5d40372
DB		 2630 h->use_weight = 0;
2631 h->use_weight_chroma = 0;
2c541554 2632 h->luma_log2_weight_denom = get_ue_golomb(&h->gb);
e5d40372 2633 if (h->sps.chroma_format_idc)
2c541554 2634 h->chroma_log2_weight_denom = get_ue_golomb(&h->gb);
e5d40372
DB		 2635 luma_def = 1 << h->luma_log2_weight_denom;
2636 chroma_def = 1 << h->chroma_log2_weight_denom;
0da71265 2637
e5d40372 2638 for (list = 0; list < 2; list++) {
cb99c652
GB		 2639 h->luma_weight_flag[list] = 0;
2640 h->chroma_weight_flag[list] = 0;
e5d40372 2641 for (i = 0; i < h->ref_count[list]; i++) {
0da71265 2642 int luma_weight_flag, chroma_weight_flag;
115329f1 2643
2c541554 2644 luma_weight_flag = get_bits1(&h->gb);
e5d40372 2645 if (luma_weight_flag) {
2c541554
AK		 2646 h->luma_weight[i][list][0] = get_se_golomb(&h->gb);
2647 h->luma_weight[i][list][1] = get_se_golomb(&h->gb);
e5d40372
DB		 2648 if (h->luma_weight[i][list][0] != luma_def ||
2649 h->luma_weight[i][list][1] != 0) {
2650 h->use_weight = 1;
2651 h->luma_weight_flag[list] = 1;
cb99c652 2652 }
e5d40372
DB		 2653 } else {
2654 h->luma_weight[i][list][0] = luma_def;
2655 h->luma_weight[i][list][1] = 0;
0da71265
MN		 2656 }
2657
e5d40372 2658 if (h->sps.chroma_format_idc) {
2c541554 2659 chroma_weight_flag = get_bits1(&h->gb);
e5d40372 2660 if (chroma_weight_flag) {
fef744d4 2661 int j;
e5d40372 2662 for (j = 0; j < 2; j++) {
2c541554
AK		 2663 h->chroma_weight[i][list][j][0] = get_se_golomb(&h->gb);
2664 h->chroma_weight[i][list][j][1] = get_se_golomb(&h->gb);
e5d40372
DB		 2665 if (h->chroma_weight[i][list][j][0] != chroma_def ||
2666 h->chroma_weight[i][list][j][1] != 0) {
16c22122 2667 h->use_weight_chroma = 1;
e5d40372 2668 h->chroma_weight_flag[list] = 1;
cb99c652 2669 }
fef744d4 2670 }
e5d40372 2671 } else {
fef744d4 2672 int j;
e5d40372
DB		 2673 for (j = 0; j < 2; j++) {
2674 h->chroma_weight[i][list][j][0] = chroma_def;
2675 h->chroma_weight[i][list][j][1] = 0;
fef744d4 2676 }
0da71265
MN		 2677 }
2678 }
2679 }
e5d40372
DB		 2680 if (h->slice_type_nos != AV_PICTURE_TYPE_B)
2681 break;
0da71265 2682 }
e5d40372 2683 h->use_weight = h->use_weight || h->use_weight_chroma;
0da71265
MN		 2684 return 0;
2685}
2686
1052b76f
MN		 2687/**
2688 * Initialize implicit_weight table.
6da88bd3 2689 * @param field 0/1 initialize the weight for interlaced MBAFF
1052b76f
MN		 2690 * -1 initializes the rest
2691 */
e5d40372
DB		 2692static void implicit_weight_table(H264Context *h, int field)
2693{
1052b76f 2694 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
9f2d1b4f 2695
ce09f927
GB		 2696 for (i = 0; i < 2; i++) {
2697 h->luma_weight_flag[i] = 0;
2698 h->chroma_weight_flag[i] = 0;
2699 }
2700
e5d40372 2701 if (field < 0) {
2c541554
AK		 2702 if (h->picture_structure == PICT_FRAME) {
2703 cur_poc = h->cur_pic_ptr->poc;
4418aa9c 2704 } else {
2c541554 2705 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
4418aa9c 2706 }
7bece9b2 2707 if (h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
e5d40372 2708 h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2 * cur_poc) {
16c22122 2709 h->use_weight = 0;
e5d40372
DB		 2710 h->use_weight_chroma = 0;
2711 return;
2712 }
2713 ref_start = 0;
2714 ref_count0 = h->ref_count[0];
2715 ref_count1 = h->ref_count[1];
2716 } else {
2c541554 2717 cur_poc = h->cur_pic_ptr->field_poc[field];
e5d40372
DB		 2718 ref_start = 16;
2719 ref_count0 = 16 + 2 * h->ref_count[0];
2720 ref_count1 = 16 + 2 * h->ref_count[1];
1052b76f 2721 }
9f2d1b4f 2722
e5d40372
DB		 2723 h->use_weight = 2;
2724 h->use_weight_chroma = 2;
2725 h->luma_log2_weight_denom = 5;
2726 h->chroma_log2_weight_denom = 5;
9f2d1b4f 2727
e5d40372 2728 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
9f2d1b4f 2729 int poc0 = h->ref_list[0][ref0].poc;
e5d40372 2730 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
87cf70eb
JD		 2731 int w = 32;
2732 if (!h->ref_list[0][ref0].long_ref && !h->ref_list[1][ref1].long_ref) {
2733 int poc1 = h->ref_list[1][ref1].poc;
e5d40372
DB		 2734 int td = av_clip(poc1 - poc0, -128, 127);
2735 if (td) {
87cf70eb
JD		 2736 int tb = av_clip(cur_poc - poc0, -128, 127);
2737 int tx = (16384 + (FFABS(td) >> 1)) / td;
e5d40372
DB		 2738 int dist_scale_factor = (tb * tx + 32) >> 8;
2739 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
87cf70eb
JD		 2740 w = 64 - dist_scale_factor;
2741 }
1052b76f 2742 }
e5d40372
DB		 2743 if (field < 0) {
2744 h->implicit_weight[ref0][ref1][0] =
2745 h->implicit_weight[ref0][ref1][1] = w;
2746 } else {
2747 h->implicit_weight[ref0][ref1][field] = w;
72f86ec0 2748 }
9f2d1b4f
LM		 2749 }
2750 }
2751}
2752
8fd57a66 2753/**
5175b937 2754 * instantaneous decoder refresh.
0da71265 2755 */
e5d40372
DB		 2756static void idr(H264Context *h)
2757{
ea6f00c4 2758 ff_h264_remove_all_refs(h);
e5d40372
DB		 2759 h->prev_frame_num = 0;
2760 h->prev_frame_num_offset = 0;
2761 h->prev_poc_msb =
2762 h->prev_poc_lsb = 0;
0da71265
MN		 2763}
2764
7c33ad19 2765/* forget old pics after a seek */
9e696d2e 2766static void flush_change(H264Context *h)
e5d40372 2767{
7c33ad19 2768 int i;
adedd840
RB		 2769 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
2770 h->last_pocs[i] = INT_MIN;
16c22122 2771 h->outputed_poc = h->next_outputed_poc = INT_MIN;
b19d493f 2772 h->prev_interlaced_frame = 1;
7c33ad19 2773 idr(h);
2c541554 2774 if (h->cur_pic_ptr)
759001c5 2775 h->cur_pic_ptr->reference = 0;
2c541554 2776 h->first_field = 0;
9e696d2e
JG		 2777 memset(h->ref_list[0], 0, sizeof(h->ref_list[0]));
2778 memset(h->ref_list[1], 0, sizeof(h->ref_list[1]));
2779 memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0]));
2780 memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1]));
9c095463 2781 ff_h264_reset_sei(h);
28096e0a
JS		 2782 h->recovery_frame = -1;
2783 h->frame_recovered = 0;
9e696d2e
JG		 2784}
2785
2786/* forget old pics after a seek */
2787static void flush_dpb(AVCodecContext *avctx)
2788{
2789 H264Context *h = avctx->priv_data;
2790 int i;
2791
2792 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
2793 if (h->delayed_pic[i])
759001c5 2794 h->delayed_pic[i]->reference = 0;
9e696d2e
JG		 2795 h->delayed_pic[i] = NULL;
2796 }
2797
2798 flush_change(h);
2c541554 2799
555000c7
AK		 2800 if (h->DPB)
2801 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2802 unref_picture(h, &h->DPB[i]);
2c541554 2803 h->cur_pic_ptr = NULL;
759001c5 2804 unref_picture(h, &h->cur_pic);
2c541554
AK		 2805
2806 h->mb_x = h->mb_y = 0;
2807
2808 h->parse_context.state = -1;
2809 h->parse_context.frame_start_found = 0;
2810 h->parse_context.overread = 0;
2811 h->parse_context.overread_index = 0;
2812 h->parse_context.index = 0;
2813 h->parse_context.last_index = 0;
9eda9d33
AK		 2814
2815 free_tables(h, 1);
2816 h->context_initialized = 0;
7c33ad19
LM		 2817}
2818
3f1a7ceb 2819int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
e5d40372 2820{
e5d40372 2821 const int max_frame_num = 1 << h->sps.log2_max_frame_num;
0da71265
MN		 2822 int field_poc[2];
2823
e5d40372
DB		 2824 h->frame_num_offset = h->prev_frame_num_offset;
2825 if (h->frame_num < h->prev_frame_num)
b78a6baa 2826 h->frame_num_offset += max_frame_num;
0da71265 2827
e5d40372
DB		 2828 if (h->sps.poc_type == 0) {
2829 const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb;
0da71265 2830
16c22122
DB		 2831 if (h->poc_lsb < h->prev_poc_lsb &&
2832 h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2)
0da71265 2833 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
16c22122
DB		 2834 else if (h->poc_lsb > h->prev_poc_lsb &&
2835 h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2)
0da71265
MN		 2836 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2837 else
2838 h->poc_msb = h->prev_poc_msb;
115329f1 2839 field_poc[0] =
0da71265 2840 field_poc[1] = h->poc_msb + h->poc_lsb;
2c541554 2841 if (h->picture_structure == PICT_FRAME)
0da71265 2842 field_poc[1] += h->delta_poc_bottom;
e5d40372 2843 } else if (h->sps.poc_type == 1) {
0da71265
MN		 2844 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2845 int i;
2846
e5d40372 2847 if (h->sps.poc_cycle_length != 0)
0da71265
MN		 2848 abs_frame_num = h->frame_num_offset + h->frame_num;
2849 else
2850 abs_frame_num = 0;
2851
e5d40372 2852 if (h->nal_ref_idc == 0 && abs_frame_num > 0)
0da71265 2853 abs_frame_num--;
115329f1 2854
0da71265 2855 expected_delta_per_poc_cycle = 0;
e5d40372
DB		 2856 for (i = 0; i < h->sps.poc_cycle_length; i++)
2857 // FIXME integrate during sps parse
2858 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i];
0da71265 2859
e5d40372 2860 if (abs_frame_num > 0) {
0da71265
MN		 2861 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2862 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2863
2864 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
e5d40372
DB		 2865 for (i = 0; i <= frame_num_in_poc_cycle; i++)
2866 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i];
0da71265
MN		 2867 } else
2868 expectedpoc = 0;
2869
e5d40372 2870 if (h->nal_ref_idc == 0)
0da71265 2871 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
115329f1 2872
0da71265
MN		 2873 field_poc[0] = expectedpoc + h->delta_poc[0];
2874 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2875
2c541554 2876 if (h->picture_structure == PICT_FRAME)
0da71265 2877 field_poc[1] += h->delta_poc[1];
e5d40372
DB		 2878 } else {
2879 int poc = 2 * (h->frame_num_offset + h->frame_num);
5710b371 2880
e5d40372 2881 if (!h->nal_ref_idc)
b78a6baa 2882 poc--;
5710b371 2883
e5d40372
DB		 2884 field_poc[0] = poc;
2885 field_poc[1] = poc;
0da71265 2886 }
115329f1 2887
2c541554 2888 if (h->picture_structure != PICT_BOTTOM_FIELD)
3f1a7ceb 2889 pic_field_poc[0] = field_poc[0];
2c541554 2890 if (h->picture_structure != PICT_TOP_FIELD)
3f1a7ceb 2891 pic_field_poc[1] = field_poc[1];
a8b19271 2892 *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]);
0da71265
MN		 2893
2894 return 0;
2895}
2896
b41c1db3
AÖ		 2897/**
2898 * initialize scan tables
2899 */
e5d40372
DB		 2900static void init_scan_tables(H264Context *h)
2901{
b41c1db3 2902 int i;
e5d40372
DB		 2903 for (i = 0; i < 16; i++) {
2904#define T(x) (x >> 2) | ((x << 2) & 0xF)
ca32f7f2 2905 h->zigzag_scan[i] = T(zigzag_scan[i]);
e5d40372 2906 h->field_scan[i] = T(field_scan[i]);
b41c1db3 2907#undef T
b41c1db3 2908 }
e5d40372
DB		 2909 for (i = 0; i < 64; i++) {
2910#define T(x) (x >> 3) | ((x & 7) << 3)
ca32f7f2
JGG		 2911 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
2912 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
2913 h->field_scan8x8[i] = T(field_scan8x8[i]);
2914 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
b41c1db3 2915#undef T
b41c1db3 2916 }
e5d40372 2917 if (h->sps.transform_bypass) { // FIXME same ugly
b41c1db3 2918 h->zigzag_scan_q0 = zigzag_scan;
45beb850 2919 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
b41c1db3
AÖ		 2920 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
2921 h->field_scan_q0 = field_scan;
2922 h->field_scan8x8_q0 = field_scan8x8;
2923 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
e5d40372 2924 } else {
b41c1db3
AÖ		 2925 h->zigzag_scan_q0 = h->zigzag_scan;
2926 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
2927 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
2928 h->field_scan_q0 = h->field_scan;
2929 h->field_scan8x8_q0 = h->field_scan8x8;
2930 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
2931 }
2932}
afebe2f7 2933
e5d40372
DB		 2934static int field_end(H264Context *h, int in_setup)
2935{
2c541554 2936 AVCodecContext *const avctx = h->avctx;
12fe7594 2937 int err = 0;
2c541554 2938 h->mb_y = 0;
256299d3 2939
2c541554 2940 if (!in_setup && !h->droppable)
759001c5 2941 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2c541554 2942 h->picture_structure == PICT_BOTTOM_FIELD);
256299d3 2943
e5d40372 2944 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
2c541554 2945 if (!h->droppable) {
12fe7594 2946 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
e5d40372
DB		 2947 h->prev_poc_msb = h->poc_msb;
2948 h->prev_poc_lsb = h->poc_lsb;
6a9c8594 2949 }
e5d40372
DB		 2950 h->prev_frame_num_offset = h->frame_num_offset;
2951 h->prev_frame_num = h->frame_num;
2952 h->outputed_poc = h->next_outputed_poc;
256299d3 2953 }
256299d3
MN		 2954
2955 if (avctx->hwaccel) {
2956 if (avctx->hwaccel->end_frame(avctx) < 0)
e5d40372
DB		 2957 av_log(avctx, AV_LOG_ERROR,
2958 "hardware accelerator failed to decode picture\n");
256299d3
MN		 2959 }
2960
256299d3
MN		 2961 /*
2962 * FIXME: Error handling code does not seem to support interlaced
2963 * when slices span multiple rows
2964 * The ff_er_add_slice calls don't work right for bottom
2965 * fields; they cause massive erroneous error concealing
2966 * Error marking covers both fields (top and bottom).
2967 * This causes a mismatched s->error_count
2968 * and a bad error table. Further, the error count goes to
2969 * INT_MAX when called for bottom field, because mb_y is
2970 * past end by one (callers fault) and resync_mb_y != 0
2971 * causes problems for the first MB line, too.
2972 */
0b499c9b 2973 if (CONFIG_ERROR_RESILIENCE && !FIELD_PICTURE(h)) {
2c541554
AK		 2974 h->er.cur_pic = h->cur_pic_ptr;
2975 h->er.last_pic = h->ref_count[0] ? &h->ref_list[0][0] : NULL;
2976 h->er.next_pic = h->ref_count[1] ? &h->ref_list[1][0] : NULL;
2977 ff_er_frame_end(&h->er);
2978 }
2c541554 2979 emms_c();
d225a1e2 2980
e5d40372 2981 h->current_slice = 0;
12fe7594
DB		 2982
2983 return err;
256299d3
MN		 2984}
2985
afebe2f7 2986/**
49bd8e4b 2987 * Replicate H264 "master" context to thread contexts.
afebe2f7 2988 */
f1d8763a 2989static int clone_slice(H264Context *dst, H264Context *src)
afebe2f7 2990{
e5d40372 2991 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
2c541554
AK		 2992 dst->cur_pic_ptr = src->cur_pic_ptr;
2993 dst->cur_pic = src->cur_pic;
2994 dst->linesize = src->linesize;
2995 dst->uvlinesize = src->uvlinesize;
2996 dst->first_field = src->first_field;
f1d8763a 2997
e5d40372
DB		 2998 dst->prev_poc_msb = src->prev_poc_msb;
2999 dst->prev_poc_lsb = src->prev_poc_lsb;
3000 dst->prev_frame_num_offset = src->prev_frame_num_offset;
3001 dst->prev_frame_num = src->prev_frame_num;
3002 dst->short_ref_count = src->short_ref_count;
afebe2f7
AÖ		 3003
3004 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
3005 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
3006 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
50c21814
AÖ		 3007
3008 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
3009 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
f1d8763a
JG		 3010
3011 return 0;
afebe2f7
AÖ		 3012}
3013
0da71265 3014/**
58c42af7 3015 * Compute profile from profile_idc and constraint_set?_flags.
fe9a3fbe
JG		 3016 *
3017 * @param sps SPS
3018 *
3019 * @return profile as defined by FF_PROFILE_H264_*
3020 */
3021int ff_h264_get_profile(SPS *sps)
3022{
3023 int profile = sps->profile_idc;
3024
e5d40372 3025 switch (sps->profile_idc) {
fe9a3fbe
JG		 3026 case FF_PROFILE_H264_BASELINE:
3027 // constraint_set1_flag set to 1
e5d40372 3028 profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0;
fe9a3fbe
JG		 3029 break;
3030 case FF_PROFILE_H264_HIGH_10:
3031 case FF_PROFILE_H264_HIGH_422:
3032 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
3033 // constraint_set3_flag set to 1
e5d40372 3034 profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0;
fe9a3fbe
JG		 3035 break;
3036 }
3037
3038 return profile;
3039}
3040
072be3e8
JG		 3041static int h264_set_parameter_from_sps(H264Context *h)
3042{
2c541554 3043 if (h->flags & CODEC_FLAG_LOW_DELAY ||
072be3e8
JG		 3044 (h->sps.bitstream_restriction_flag &&
3045 !h->sps.num_reorder_frames)) {
2c541554
AK		 3046 if (h->avctx->has_b_frames > 1 || h->delayed_pic[0])
3047 av_log(h->avctx, AV_LOG_WARNING, "Delayed frames seen. "
072be3e8
JG		 3048 "Reenabling low delay requires a codec flush.\n");
3049 else
2c541554 3050 h->low_delay = 1;
072be3e8
JG		 3051 }
3052
2c541554
AK		 3053 if (h->avctx->has_b_frames < 2)
3054 h->avctx->has_b_frames = !h->low_delay;
072be3e8 3055
2c541554 3056 if (h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
072be3e8 3057 h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
072be3e8 3058 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
2c541554 3059 h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
072be3e8
JG		 3060 h->cur_chroma_format_idc = h->sps.chroma_format_idc;
3061 h->pixel_shift = h->sps.bit_depth_luma > 8;
3062
3063 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma,
3064 h->sps.chroma_format_idc);
79dad2a9 3065 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
e9d81735 3066 ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma);
2c541554 3067 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, h->sps.bit_depth_luma,
072be3e8 3068 h->sps.chroma_format_idc);
85deb51a
RB		 3069 if (CONFIG_ERROR_RESILIENCE)
3070 ff_dsputil_init(&h->dsp, h->avctx);
2c541554 3071 ff_videodsp_init(&h->vdsp, h->sps.bit_depth_luma);
072be3e8 3072 } else {
2c541554 3073 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
072be3e8
JG		 3074 h->sps.bit_depth_luma);
3075 return AVERROR_INVALIDDATA;
3076 }
3077 }
3078 return 0;
3079}
3080
542b83fc 3081static enum AVPixelFormat get_pixel_format(H264Context *h)
9e696d2e 3082{
9e696d2e
JG		 3083 switch (h->sps.bit_depth_luma) {
3084 case 9:
23e85be5 3085 if (CHROMA444(h)) {
2c541554 3086 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
9e696d2e
JG		 3087 return AV_PIX_FMT_GBRP9;
3088 } else
3089 return AV_PIX_FMT_YUV444P9;
e962bd08 3090 } else if (CHROMA422(h))
9e696d2e
JG		 3091 return AV_PIX_FMT_YUV422P9;
3092 else
3093 return AV_PIX_FMT_YUV420P9;
3094 break;
3095 case 10:
23e85be5 3096 if (CHROMA444(h)) {
2c541554 3097 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
9e696d2e
JG		 3098 return AV_PIX_FMT_GBRP10;
3099 } else
3100 return AV_PIX_FMT_YUV444P10;
e962bd08 3101 } else if (CHROMA422(h))
9e696d2e
JG		 3102 return AV_PIX_FMT_YUV422P10;
3103 else
3104 return AV_PIX_FMT_YUV420P10;
3105 break;
3106 case 8:
23e85be5 3107 if (CHROMA444(h)) {
2c541554 3108 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
9e696d2e
JG		 3109 return AV_PIX_FMT_GBRP;
3110 } else
2c541554 3111 return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ444P
9e696d2e 3112 : AV_PIX_FMT_YUV444P;
e962bd08 3113 } else if (CHROMA422(h)) {
2c541554 3114 return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ422P
9e696d2e
JG		 3115 : AV_PIX_FMT_YUV422P;
3116 } else {
2c541554
AK		 3117 return h->avctx->get_format(h->avctx, h->avctx->codec->pix_fmts ?
3118 h->avctx->codec->pix_fmts :
3119 h->avctx->color_range == AVCOL_RANGE_JPEG ?
d65522e8 3120 h264_hwaccel_pixfmt_list_jpeg_420 :
8d061989 3121 h264_hwaccel_pixfmt_list_420);
9e696d2e
JG		 3122 }
3123 break;
3124 default:
2c541554 3125 av_log(h->avctx, AV_LOG_ERROR,
9e696d2e
JG		 3126 "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
3127 return AVERROR_INVALIDDATA;
3128 }
3129}
3130
5e83d9ac
AK		 3131/* export coded and cropped frame dimensions to AVCodecContext */
3132static int init_dimensions(H264Context *h)
3133{
3134 int width = h->width - (h->sps.crop_right + h->sps.crop_left);
3135 int height = h->height - (h->sps.crop_top + h->sps.crop_bottom);
3136
3137 /* handle container cropping */
3138 if (!h->sps.crop &&
3139 FFALIGN(h->avctx->width, 16) == h->width &&
3140 FFALIGN(h->avctx->height, 16) == h->height) {
3141 width = h->avctx->width;
3142 height = h->avctx->height;
3143 }
3144
3145 if (width <= 0 || height <= 0) {
3146 av_log(h->avctx, AV_LOG_ERROR, "Invalid cropped dimensions: %dx%d.\n",
3147 width, height);
3148 if (h->avctx->err_recognition & AV_EF_EXPLODE)
3149 return AVERROR_INVALIDDATA;
3150
3151 av_log(h->avctx, AV_LOG_WARNING, "Ignoring cropping information.\n");
3152 h->sps.crop_bottom = h->sps.crop_top = h->sps.crop_right = h->sps.crop_left = 0;
16c22122 3153 h->sps.crop = 0;
5e83d9ac
AK		 3154
3155 width = h->width;
3156 height = h->height;
3157 }