FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h264dec.c
Date: 2026-09-19 20:18:21
Exec Total Coverage
Lines: 495 663 74.7%
Functions: 22 24 91.7%
Branches: 279 471 59.2%
Line Branch Exec Source
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * H.264 / AVC / MPEG-4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #define UNCHECKED_BITSTREAM_READER 1
29
30 #include "config_components.h"
31
32 #include "libavutil/attributes.h"
33 #include "libavutil/avassert.h"
34 #include "libavutil/emms.h"
35 #include "libavutil/imgutils.h"
36 #include "libavutil/mem.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/thread.h"
39 #include "libavutil/video_enc_params.h"
40
41 #include "codec_internal.h"
42 #include "internal.h"
43 #include "error_resilience.h"
44 #include "avcodec.h"
45 #include "decode.h"
46 #include "h264.h"
47 #include "h264dec.h"
48 #include "h2645_parse.h"
49 #include "h264data.h"
50 #include "h264_ps.h"
51 #include "golomb.h"
52 #include "hwaccel_internal.h"
53 #include "hwconfig.h"
54 #include "mpegutils.h"
55 #include "profiles.h"
56 #include "rectangle.h"
57 #include "libavutil/refstruct.h"
58 #include "thread.h"
59 #include "threadframe.h"
60
61 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
62
63 6963 int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
64 {
65 6963 H264Context *h = avctx->priv_data;
66
3/4
✓ Branch 0 taken 6963 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 6821 times.
✓ Branch 3 taken 142 times.
 6963 return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
67 }
68
69 1485 static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
70 int (*mv)[2][4][2],
71 int mb_x, int mb_y, int mb_intra, int mb_skipped)
72 {
73 1485 const H264Context *h = opaque;
74 1485 H264SliceContext *sl = &h->slice_ctx[0];
75
76 1485 sl->mb_x = mb_x;
77 1485 sl->mb_y = mb_y;
78 1485 sl->mb_xy = mb_x + mb_y * h->mb_stride;
79 1485 memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
80 av_assert1(ref >= 0);
81 /* FIXME: It is possible albeit uncommon that slice references
82 * differ between slices. We take the easy approach and ignore
83 * it for now. If this turns out to have any relevance in
84 * practice then correct remapping should be added. */
85
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1485 times.
 1485 if (ref >= sl->ref_count[0])
86 ✗ ref = 0;
87
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1485 times.
 1485 if (!sl->ref_list[0][ref].data[0]) {
88 ✗ av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
89 ✗ ref = 0;
90 }
91
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1485 times.
 1485 if ((sl->ref_list[0][ref].reference&3) != 3) {
92 ✗ av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
93 ✗ return;
94 }
95 1485 fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
96 2, 2, 2, ref, 1);
97 1485 fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
98 1485 fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
99 1485 pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
100 1485 sl->mb_mbaff =
101 1485 sl->mb_field_decoding_flag = 0;
102 1485 ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
103 }
104
105 389341 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
106 int y, int height)
107 {
108 389341 AVCodecContext *avctx = h->avctx;
109 389341 const AVFrame *src = h->cur_pic.f;
110 const AVPixFmtDescriptor *desc;
111 int offset[AV_NUM_DATA_POINTERS];
112 int vshift;
113 389341 const int field_pic = h->picture_structure != PICT_FRAME;
114
115
1/2
✓ Branch 0 taken 389341 times.
✗ Branch 1 not taken.
 389341 if (!avctx->draw_horiz_band)
116 389341 return;
117
118 ✗ if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
119 ✗ return;
120
121 ✗ if (field_pic) {
122 ✗ height <<= 1;
123 ✗ y <<= 1;
124 }
125
126 ✗ height = FFMIN(height, avctx->height - y);
127
128 ✗ desc = av_pix_fmt_desc_get(avctx->pix_fmt);
129 ✗ vshift = desc->log2_chroma_h;
130
131 ✗ offset[0] = y * src->linesize[0];
132 ✗ offset[1] =
133 ✗ offset[2] = (y >> vshift) * src->linesize[1];
134 ✗ for (int i = 3; i < AV_NUM_DATA_POINTERS; i++)
135 ✗ offset[i] = 0;
136
137 ✗ emms_c();
138
139 ✗ avctx->draw_horiz_band(avctx, src, offset,
140 ✗ y, h->picture_structure, height);
141 }
142
143 1334 void ff_h264_free_tables(H264Context *h)
144 {
145 int i;
146
147 1334 av_freep(&h->intra4x4_pred_mode);
148 1334 av_freep(&h->chroma_pred_mode_table);
149 1334 av_freep(&h->cbp_table);
150 1334 av_freep(&h->mvd_table[0]);
151 1334 av_freep(&h->mvd_table[1]);
152 1334 av_freep(&h->direct_table);
153 1334 av_freep(&h->non_zero_count);
154 1334 av_freep(&h->slice_table_base);
155 1334 h->slice_table = NULL;
156 1334 av_freep(&h->list_counts);
157
158 1334 av_freep(&h->mb2b_xy);
159 1334 av_freep(&h->mb2br_xy);
160
161 1334 av_refstruct_pool_uninit(&h->qscale_table_pool);
162 1334 av_refstruct_pool_uninit(&h->mb_type_pool);
163 1334 av_refstruct_pool_uninit(&h->motion_val_pool);
164 1334 av_refstruct_pool_uninit(&h->ref_index_pool);
165
166 #if CONFIG_ERROR_RESILIENCE
167 1334 av_freep(&h->er.mb_index2xy);
168 1334 av_freep(&h->er.error_status_table);
169 1334 av_freep(&h->er.er_temp_buffer);
170 1334 av_freep(&h->dc_val_base);
171 #endif
172
173
2/2
✓ Branch 0 taken 1336 times.
✓ Branch 1 taken 1334 times.
 2670 for (i = 0; i < h->nb_slice_ctx; i++) {
174 1336 H264SliceContext *sl = &h->slice_ctx[i];
175
176 1336 av_freep(&sl->bipred_scratchpad);
177 1336 av_freep(&sl->edge_emu_buffer);
178 1336 av_freep(&sl->top_borders[0]);
179 1336 av_freep(&sl->top_borders[1]);
180
181 1336 sl->bipred_scratchpad_allocated = 0;
182 1336 sl->edge_emu_buffer_allocated = 0;
183 1336 sl->top_borders_allocated[0] = 0;
184 1336 sl->top_borders_allocated[1] = 0;
185 }
186 1334 }
187
188 658 int ff_h264_alloc_tables(H264Context *h)
189 {
190 658 ERContext *const er = &h->er;
191 658 const int big_mb_num = h->mb_stride * (h->mb_height + 1);
192 658 const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
193 658 const int st_size = big_mb_num + h->mb_stride;
194 int x, y;
195
196
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 if (!FF_ALLOCZ_TYPED_ARRAY(h->intra4x4_pred_mode, row_mb_num * 8) ||
197
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->non_zero_count, big_mb_num) ||
198
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->slice_table_base, st_size) ||
199
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->cbp_table, big_mb_num) ||
200
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->chroma_pred_mode_table, big_mb_num) ||
201
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->mvd_table[0], row_mb_num * 8) ||
202
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->mvd_table[1], row_mb_num * 8) ||
203
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->direct_table, big_mb_num * 4) ||
204
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->list_counts, big_mb_num) ||
205
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->mb2b_xy, big_mb_num) ||
206
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 658 times.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->mb2br_xy, big_mb_num))
207 ✗ return AVERROR(ENOMEM);
208 658 h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
209 658 h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
210 658 h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
211 658 memset(h->slice_table_base, -1,
212 st_size * sizeof(*h->slice_table_base));
213 658 h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
214
2/2
✓ Branch 0 taken 16293 times.
✓ Branch 1 taken 658 times.
 16951 for (y = 0; y < h->mb_height; y++)
215
2/2
✓ Branch 0 taken 986739 times.
✓ Branch 1 taken 16293 times.
 1003032 for (x = 0; x < h->mb_width; x++) {
216 986739 const int mb_xy = x + y * h->mb_stride;
217 986739 const int b_xy = 4 * x + 4 * y * h->b_stride;
218
219 986739 h->mb2b_xy[mb_xy] = b_xy;
220 986739 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
221 }
222
223 if (CONFIG_ERROR_RESILIENCE) {
224 658 int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
225 658 int yc_size = y_size + 2 * big_mb_num;
226
227 /* init ER */
228 658 er->avctx = h->avctx;
229 658 er->decode_mb = h264_er_decode_mb;
230 658 er->opaque = h;
231 658 er->quarter_sample = 1;
232
233 658 er->mb_num = h->mb_num;
234 658 er->mb_width = h->mb_width;
235 658 er->mb_height = h->mb_height;
236 658 er->mb_stride = h->mb_stride;
237 658 er->b8_stride = h->mb_width * 2 + 1;
238
239 // error resilience code looks cleaner with this
240
1/2
✓ Branch 1 taken 658 times.
✗ Branch 2 not taken.
 658 if (!FF_ALLOCZ_TYPED_ARRAY(er->mb_index2xy, h->mb_num + 1) ||
241
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 658 times.
 658 !FF_ALLOCZ_TYPED_ARRAY(h->dc_val_base, yc_size))
242 ✗ return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
243
244
2/2
✓ Branch 0 taken 16293 times.
✓ Branch 1 taken 658 times.
 16951 for (y = 0; y < h->mb_height; y++)
245
2/2
✓ Branch 0 taken 986739 times.
✓ Branch 1 taken 16293 times.
 1003032 for (x = 0; x < h->mb_width; x++)
246 986739 er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
247
248 658 er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
249 658 h->mb_stride + h->mb_width;
250 658 er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2;
251 658 er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1;
252 658 er->dc_val[2] = er->dc_val[1] + big_mb_num;
253
2/2
✓ Branch 0 taken 6084480 times.
✓ Branch 1 taken 658 times.
 6085138 for (int i = 0; i < yc_size; i++)
254 6084480 h->dc_val_base[i] = 1024;
255
256 658 return ff_er_init(er);
257 }
258
259 return 0;
260 }
261
262 /**
263 * Init slice context
264 */
265 659 void ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
266 {
267 659 sl->ref_cache[0][scan8[5] + 1] =
268 659 sl->ref_cache[0][scan8[7] + 1] =
269 659 sl->ref_cache[0][scan8[13] + 1] =
270 659 sl->ref_cache[1][scan8[5] + 1] =
271 659 sl->ref_cache[1][scan8[7] + 1] =
272 659 sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
273
274 659 sl->er = &h->er;
275 659 }
276
277 25574 static int h264_init_pic(H264Picture *pic)
278 {
279 25574 pic->f = av_frame_alloc();
280
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25574 times.
 25574 if (!pic->f)
281 ✗ return AVERROR(ENOMEM);
282
283 25574 pic->f_grain = av_frame_alloc();
284
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25574 times.
 25574 if (!pic->f_grain)
285 ✗ return AVERROR(ENOMEM);
286
287 25574 return 0;
288 }
289
290 673 static int h264_init_context(AVCodecContext *avctx, H264Context *h)
291 {
292 int i, ret;
293
294 673 h->avctx = avctx;
295 673 h->cur_chroma_format_idc = -1;
296
297 673 h->width_from_caller = avctx->width;
298 673 h->height_from_caller = avctx->height;
299
300 673 h->workaround_bugs = avctx->workaround_bugs;
301 673 h->flags = avctx->flags;
302 673 h->poc.prev_poc_msb = 1 << 16;
303 673 h->recovery_frame = -1;
304 673 h->frame_recovered = 0;
305 673 h->poc.prev_frame_num = -1;
306 673 h->sei.common.frame_packing.arrangement_cancel_flag = -1;
307 673 h->sei.common.unregistered.x264_build = -1;
308
309 673 h->next_outputed_poc = INT_MIN;
310
2/2
✓ Branch 0 taken 10768 times.
✓ Branch 1 taken 673 times.
 11441 for (i = 0; i < FF_ARRAY_ELEMS(h->last_pocs); i++)
311 10768 h->last_pocs[i] = INT_MIN;
312
313 673 ff_h264_sei_uninit(&h->sei);
314
315
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 655 times.
 673 if (avctx->active_thread_type & FF_THREAD_FRAME) {
316 18 h->decode_error_flags_pool = av_refstruct_pool_alloc(sizeof(atomic_int), 0);
317
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 18 times.
 18 if (!h->decode_error_flags_pool)
318 ✗ return AVERROR(ENOMEM);
319 }
320
321
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 672 times.
 673 h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
322 673 h->slice_ctx = av_calloc(h->nb_slice_ctx, sizeof(*h->slice_ctx));
323
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 673 times.
 673 if (!h->slice_ctx) {
324 ✗ h->nb_slice_ctx = 0;
325 ✗ return AVERROR(ENOMEM);
326 }
327
328
2/2
✓ Branch 0 taken 24228 times.
✓ Branch 1 taken 673 times.
 24901 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
329
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 24228 times.
 24228 if ((ret = h264_init_pic(&h->DPB[i])) < 0)
330 ✗ return ret;
331 }
332
333
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 673 times.
 673 if ((ret = h264_init_pic(&h->cur_pic)) < 0)
334 ✗ return ret;
335
336
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 673 times.
 673 if ((ret = h264_init_pic(&h->last_pic_for_ec)) < 0)
337 ✗ return ret;
338
339
2/2
✓ Branch 0 taken 674 times.
✓ Branch 1 taken 673 times.
 1347 for (i = 0; i < h->nb_slice_ctx; i++)
340 674 h->slice_ctx[i].h264 = h;
341
342 673 return 0;
343 }
344
345 25574 static void h264_free_pic(H264Context *h, H264Picture *pic)
346 {
347 25574 ff_h264_unref_picture(pic);
348 25574 av_frame_free(&pic->f);
349 25574 av_frame_free(&pic->f_grain);
350 25574 }
351
352 673 static av_cold int h264_decode_end(AVCodecContext *avctx)
353 {
354 673 H264Context *h = avctx->priv_data;
355 int i;
356
357 673 ff_h264_remove_all_refs(h);
358 673 ff_h264_free_tables(h);
359
360
2/2
✓ Branch 0 taken 24228 times.
✓ Branch 1 taken 673 times.
 24901 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
361 24228 h264_free_pic(h, &h->DPB[i]);
362 }
363 673 memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
364
365 673 h->cur_pic_ptr = NULL;
366
367 673 av_refstruct_pool_uninit(&h->decode_error_flags_pool);
368
369 673 av_freep(&h->slice_ctx);
370 673 h->nb_slice_ctx = 0;
371
372 673 ff_h264_sei_uninit(&h->sei);
373 673 ff_h264_ps_uninit(&h->ps);
374
375 673 ff_h2645_packet_uninit(&h->pkt);
376
377 673 h264_free_pic(h, &h->cur_pic);
378 673 h264_free_pic(h, &h->last_pic_for_ec);
379
380 673 return 0;
381 }
382
383 static AVOnce h264_vlc_init = AV_ONCE_INIT;
384
385 673 static av_cold int h264_decode_init(AVCodecContext *avctx)
386 {
387 673 H264Context *h = avctx->priv_data;
388 int ret;
389
390 673 ret = h264_init_context(avctx, h);
391
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 673 times.
 673 if (ret < 0)
392 ✗ return ret;
393
394 673 ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc);
395
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 673 times.
 673 if (ret != 0) {
396 ✗ av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
397 ✗ return AVERROR_UNKNOWN;
398 }
399
400
2/2
✓ Branch 0 taken 657 times.
✓ Branch 1 taken 16 times.
 673 if (!avctx->internal->is_copy) {
401
3/4
✓ Branch 0 taken 409 times.
✓ Branch 1 taken 248 times.
✓ Branch 2 taken 409 times.
✗ Branch 3 not taken.
 657 if (avctx->extradata_size > 0 && avctx->extradata) {
402 409 ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
403 &h->ps, &h->is_avc, &h->nal_length_size,
404 avctx->err_recognition, avctx);
405
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 409 times.
 409 if (ret < 0) {
406 ✗ int explode = avctx->err_recognition & AV_EF_EXPLODE;
407 ✗ av_log(avctx, explode ? AV_LOG_ERROR: AV_LOG_WARNING,
408 "Error decoding the extradata\n");
409 ✗ if (explode) {
410 ✗ return ret;
411 }
412 ✗ ret = 0;
413 }
414 }
415 }
416
417
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 673 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 673 if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
418 ✗ h->avctx->has_b_frames < h->ps.sps->num_reorder_frames) {
419 ✗ h->avctx->has_b_frames = h->ps.sps->num_reorder_frames;
420 }
421
422 673 ff_h264_flush_change(h);
423
424
3/4
✓ Branch 0 taken 673 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 672 times.
 673 if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
425 1 h->enable_er = 0;
426
427
3/4
✓ Branch 0 taken 672 times.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 672 times.
 673 if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
428 ✗ av_log(avctx, AV_LOG_WARNING,
429 "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
430 "Use it at your own risk\n");
431 }
432
433 673 return 0;
434 }
435
436 /**
437 * instantaneous decoder refresh.
438 */
439 1892 static void idr(H264Context *h)
440 {
441 int i;
442 1892 ff_h264_remove_all_refs(h);
443 1892 h->poc.prev_frame_num =
444 1892 h->poc.prev_frame_num_offset = 0;
445 1892 h->poc.prev_poc_msb = 1<<16;
446 1892 h->poc.prev_poc_lsb = -1;
447
2/2
✓ Branch 0 taken 30272 times.
✓ Branch 1 taken 1892 times.
 32164 for (i = 0; i < FF_ARRAY_ELEMS(h->last_pocs); i++)
448 30272 h->last_pocs[i] = INT_MIN;
449 1892 }
450
451 /* forget old pics after a seek */
452 684 void ff_h264_flush_change(H264Context *h)
453 {
454 int i, j;
455
456 684 h->next_outputed_poc = INT_MIN;
457 684 h->prev_interlaced_frame = 1;
458 684 idr(h);
459
460 684 h->poc.prev_frame_num = -1;
461
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 684 times.
 684 if (h->cur_pic_ptr) {
462 ✗ h->cur_pic_ptr->reference = 0;
463 ✗ for (j=i=0; h->delayed_pic[i]; i++)
464 ✗ if (h->delayed_pic[i] != h->cur_pic_ptr)
465 ✗ h->delayed_pic[j++] = h->delayed_pic[i];
466 ✗ h->delayed_pic[j] = NULL;
467 }
468 684 ff_h264_unref_picture(&h->last_pic_for_ec);
469
470 684 h->first_field = 0;
471 684 h->recovery_frame = -1;
472 684 h->frame_recovered = 0;
473 684 h->current_slice = 0;
474 684 h->mmco_reset = 1;
475 684 }
476
477 3 static av_cold void h264_decode_flush(AVCodecContext *avctx)
478 {
479 3 H264Context *h = avctx->priv_data;
480 int i;
481
482 3 memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
483
484 3 ff_h264_flush_change(h);
485 3 ff_h264_sei_uninit(&h->sei);
486
487
2/2
✓ Branch 0 taken 108 times.
✓ Branch 1 taken 3 times.
 111 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
488 108 ff_h264_unref_picture(&h->DPB[i]);
489 3 h->cur_pic_ptr = NULL;
490 3 ff_h264_unref_picture(&h->cur_pic);
491
492 3 h->mb_y = 0;
493 3 h->non_gray = 0;
494
495 3 ff_h264_free_tables(h);
496 3 h->context_initialized = 0;
497
498
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 3 if (FF_HW_HAS_CB(avctx, flush))
499 ✗ FF_HW_SIMPLE_CALL(avctx, flush);
500 3 }
501
502 42 static int get_last_needed_nal(H264Context *h)
503 {
504 42 int nals_needed = 0;
505 42 int slice_type = 0;
506 42 int picture_intra_only = 1;
507 42 int first_slice = 0;
508 int i, ret;
509
510
2/2
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 42 times.
 86 for (i = 0; i < h->pkt.nb_nals; i++) {
511 44 H2645NAL *nal = &h->pkt.nals[i];
512 GetBitContext gb;
513
514 /* packets can sometimes contain multiple PPS/SPS,
515 * e.g. two PAFF field pictures in one packet, or a demuxer
516 * which splits NALs strangely if so, when frame threading we
517 * can't start the next thread until we've read all of them */
518
2/3
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
✓ Branch 2 taken 2 times.
 44 switch (nal->type) {
519 ✗ case H264_NAL_SPS:
520 case H264_NAL_PPS:
521 ✗ nals_needed = i;
522 ✗ break;
523 42 case H264_NAL_DPA:
524 case H264_NAL_IDR_SLICE:
525 case H264_NAL_SLICE:
526 42 ret = init_get_bits8(&gb, nal->data + 1, nal->size - 1);
527
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
 42 if (ret < 0) {
528 ✗ av_log(h->avctx, AV_LOG_ERROR, "Invalid zero-sized VCL NAL unit\n");
529 ✗ if (h->avctx->err_recognition & AV_EF_EXPLODE)
530 ✗ return ret;
531
532 ✗ break;
533 }
534
1/4
✗ Branch 1 not taken.
✓ Branch 2 taken 42 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 42 if (!get_ue_golomb_long(&gb) || // first_mb_in_slice
535 ✗ !first_slice ||
536 ✗ first_slice != nal->type)
537 42 nals_needed = i;
538 42 slice_type = get_ue_golomb_31(&gb);
539
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
 42 if (slice_type > 9)
540 ✗ slice_type = 0;
541
1/2
✓ Branch 0 taken 42 times.
✗ Branch 1 not taken.
 42 if (slice_type > 4)
542 42 slice_type -= 5;
543
544 42 slice_type = ff_h264_golomb_to_pict_type[slice_type];
545 42 picture_intra_only &= (slice_type & 3) == AV_PICTURE_TYPE_I;
546
1/2
✓ Branch 0 taken 42 times.
✗ Branch 1 not taken.
 42 if (!first_slice)
547 42 first_slice = nal->type;
548 }
549 }
550
551 42 h->picture_intra_only = picture_intra_only;
552
553 42 return nals_needed;
554 }
555
556 ✗ static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
557 {
558 ✗ av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
559 ✗ av_log(logctx, AV_LOG_DEBUG, " green_metadata_type: %d\n", gm->green_metadata_type);
560
561 ✗ if (gm->green_metadata_type == 0) {
562 ✗ av_log(logctx, AV_LOG_DEBUG, " green_metadata_period_type: %d\n", gm->period_type);
563
564 ✗ if (gm->period_type == 2)
565 ✗ av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_seconds: %d\n", gm->num_seconds);
566 ✗ else if (gm->period_type == 3)
567 ✗ av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_pictures: %d\n", gm->num_pictures);
568
569 ✗ av_log(logctx, AV_LOG_DEBUG, " SEI GREEN Complexity Metrics: %f %f %f %f\n",
570 ✗ (float)gm->percent_non_zero_macroblocks/255,
571 ✗ (float)gm->percent_intra_coded_macroblocks/255,
572 ✗ (float)gm->percent_six_tap_filtering/255,
573 ✗ (float)gm->percent_alpha_point_deblocking_instance/255);
574
575 ✗ } else if (gm->green_metadata_type == 1) {
576 ✗ av_log(logctx, AV_LOG_DEBUG, " xsd_metric_type: %d\n", gm->xsd_metric_type);
577
578 ✗ if (gm->xsd_metric_type == 0)
579 ✗ av_log(logctx, AV_LOG_DEBUG, " xsd_metric_value: %f\n",
580 ✗ (float)gm->xsd_metric_value/100);
581 }
582 ✗ }
583
584 /**
585 * Attach the partitions B and C immediately following the partition A at idx.
586 * Arbitrary slice order may separate them (7.4.1.2.5); that is not supported.
587 *
588 * @return index of the last NAL absorbed, or idx if there were none.
589 */
590 60 static int h264_attach_partitions(const H264Context *h, H264SliceContext *sl,
591 int idx)
592 {
593
2/2
✓ Branch 0 taken 105 times.
✓ Branch 1 taken 60 times.
 165 while (idx + 1 < h->pkt.nb_nals) {
594 105 const H2645NAL *nal = &h->pkt.nals[idx + 1];
595
596
3/4
✓ Branch 0 taken 45 times.
✓ Branch 1 taken 60 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 45 times.
 105 if (nal->type != H264_NAL_DPB && nal->type != H264_NAL_DPC)
597 ✗ break;
598
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 105 times.
 105 if (ff_h264_attach_slice_partition(h, sl, nal) < 0)
599 ✗ break;
600 105 idx++;
601 }
602
603 60 return idx;
604 }
605
606 30181 static int decode_nal_units(H264Context *h, AVBufferRef *buf_ref,
607 const uint8_t *buf, int buf_size)
608 {
609 30181 AVCodecContext *const avctx = h->avctx;
610 30181 int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
611 30181 int idr_cleared=0;
612 30181 int dp_attached_to = -1; ///< index of the last partition B/C claimed
613 30181 int i, ret = 0;
614
615 30181 h->has_slice = 0;
616 30181 h->nal_unit_type= 0;
617
618
2/2
✓ Branch 0 taken 29425 times.
✓ Branch 1 taken 756 times.
 30181 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
619 29425 h->current_slice = 0;
620
2/2
✓ Branch 0 taken 26010 times.
✓ Branch 1 taken 3415 times.
 29425 if (!h->first_field) {
621 26010 h->cur_pic_ptr = NULL;
622 26010 ff_h264_sei_uninit(&h->sei);
623 }
624 }
625
626
2/2
✓ Branch 0 taken 3433 times.
✓ Branch 1 taken 26748 times.
 30181 if (h->nal_length_size == 4) {
627
2/6
✓ Branch 0 taken 3433 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 3433 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 3433 if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
628 ✗ h->is_avc = 0;
629
3/6
✓ Branch 0 taken 3433 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 3433 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 3433 times.
✗ Branch 5 not taken.
 3433 }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
630 3433 h->is_avc = 1;
631 }
632
633 30181 ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->nal_length_size,
634 30181 avctx->codec_id, !!h->is_avc * H2645_FLAG_IS_NALFF);
635
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 30180 times.
 30181 if (ret < 0) {
636 1 av_log(avctx, AV_LOG_ERROR,
637 "Error splitting the input into NAL units.\n");
638 1 return ret;
639 }
640
641
2/2
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 30138 times.
 30180 if (avctx->active_thread_type & FF_THREAD_FRAME)
642 42 nals_needed = get_last_needed_nal(h);
643
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30180 times.
 30180 if (nals_needed < 0)
644 ✗ return nals_needed;
645
646
2/2
✓ Branch 0 taken 53639 times.
✓ Branch 1 taken 30180 times.
 83819 for (i = 0; i < h->pkt.nb_nals; i++) {
647 53639 H2645NAL *nal = &h->pkt.nals[i];
648 H264SliceContext *queued;
649 int max_slice_ctx, err;
650
651
2/2
✓ Branch 0 taken 928 times.
✓ Branch 1 taken 52711 times.
 53639 if (avctx->skip_frame >= AVDISCARD_NONREF &&
652
4/4
✓ Branch 0 taken 824 times.
✓ Branch 1 taken 104 times.
✓ Branch 2 taken 504 times.
✓ Branch 3 taken 320 times.
 928 nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
653 504 continue;
654
655 // FIXME these should stop being context-global variables
656 53135 h->nal_ref_idc = nal->ref_idc;
657 53135 h->nal_unit_type = nal->type;
658
659 53135 err = 0;
660
7/8
✓ Branch 0 taken 2400 times.
✓ Branch 1 taken 36689 times.
✓ Branch 2 taken 105 times.
✓ Branch 3 taken 3090 times.
✓ Branch 4 taken 1103 times.
✓ Branch 5 taken 7042 times.
✓ Branch 6 taken 2706 times.
✗ Branch 7 not taken.
 53135 switch (nal->type) {
661 2400 case H264_NAL_IDR_SLICE:
662
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2400 times.
 2400 if ((nal->data[1] & 0xFC) == 0x98) {
663 ✗ av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
664 ✗ h->next_outputed_poc = INT_MIN;
665 ✗ ret = -1;
666 ✗ goto end;
667 }
668
2/2
✓ Branch 0 taken 1208 times.
✓ Branch 1 taken 1192 times.
 2400 if(!idr_cleared) {
669 1208 idr(h); // FIXME ensure we don't lose some frames if there is reordering
670 }
671 2400 idr_cleared = 1;
672 2400 h->has_recovery_point = 1;
673 av_fallthrough;
674 39089 case H264_NAL_SLICE:
675 case H264_NAL_DPA:
676 39089 h->has_slice = 1;
677
678
2/2
✓ Branch 0 taken 60 times.
✓ Branch 1 taken 39029 times.
 39089 if (nal->type == H264_NAL_DPA) {
679 /* partitioned streams all come from JM or a derivative */
680
2/2
✓ Branch 0 taken 30 times.
✓ Branch 1 taken 30 times.
 60 if (h->workaround_bugs & FF_BUG_AUTODETECT)
681 30 h->workaround_bugs |= FF_BUG_H264_DP_NNZ;
682
683 /* hwaccels take one self-contained slice NAL, not three */
684
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 60 times.
 60 if (avctx->hwaccel) {
685 ✗ avpriv_request_sample(avctx, "hardware accelerated data partitioning");
686 ✗ ret = AVERROR_PATCHWELCOME;
687 ✗ goto end;
688 }
689 /* the lookahead needs all three partitions in one packet */
690
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 60 times.
 60 if (avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) {
691 ✗ av_log(avctx, AV_LOG_ERROR, "Decoding in chunks is not "
692 "supported for partitioned slices\n");
693 ✗ ret = AVERROR(ENOSYS);
694 ✗ goto end;
695 }
696 }
697
698
2/2
✓ Branch 1 taken 167 times.
✓ Branch 2 taken 38922 times.
 39089 if ((err = ff_h264_queue_decode_slice(h, nal, &queued))) {
699 167 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
700 167 sl->ref_count[0] = sl->ref_count[1] = 0;
701 167 break;
702 }
703
704
3/4
✓ Branch 0 taken 60 times.
✓ Branch 1 taken 38862 times.
✓ Branch 2 taken 60 times.
✗ Branch 3 not taken.
 38922 if (nal->type == H264_NAL_DPA && queued)
705 60 dp_attached_to = h264_attach_partitions(h, queued, i);
706
707
2/2
✓ Branch 0 taken 29330 times.
✓ Branch 1 taken 9592 times.
 38922 if (h->current_slice == 1) {
708
3/4
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 29288 times.
✓ Branch 2 taken 42 times.
✗ Branch 3 not taken.
 29330 if (avctx->active_thread_type & FF_THREAD_FRAME &&
709
2/4
✓ Branch 0 taken 42 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 42 times.
✗ Branch 3 not taken.
 42 i >= nals_needed && !h->setup_finished && h->cur_pic_ptr) {
710 42 ff_thread_finish_setup(avctx);
711 42 h->setup_finished = 1;
712 }
713
714
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 29330 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 29330 if (h->avctx->hwaccel &&
715 ✗ (ret = FF_HW_CALL(h->avctx, start_frame, buf_ref,
716 buf, buf_size)) < 0)
717 ✗ goto end;
718 }
719
720
1/2
✓ Branch 0 taken 38922 times.
✗ Branch 1 not taken.
 38922 max_slice_ctx = avctx->hwaccel ? 1 : h->nb_slice_ctx;
721
2/2
✓ Branch 0 taken 38092 times.
✓ Branch 1 taken 830 times.
 38922 if (h->nb_slice_ctx_queued == max_slice_ctx) {
722
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 38092 times.
 38092 if (h->avctx->hwaccel) {
723 ✗ ret = FF_HW_CALL(avctx, decode_slice, nal->raw_data, nal->raw_size);
724 ✗ h->nb_slice_ctx_queued = 0;
725 } else
726 38092 ret = ff_h264_execute_decode_slices(h);
727
3/4
✓ Branch 0 taken 17 times.
✓ Branch 1 taken 38075 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 17 times.
 38092 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
728 ✗ goto end;
729 }
730 38922 break;
731 105 case H264_NAL_DPB:
732 case H264_NAL_DPC:
733 /* not claimed by the lookahead above, so it has no partition A */
734
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 105 times.
 105 if (i > dp_attached_to)
735 ✗ av_log(avctx, AV_LOG_WARNING, "Ignoring slice data partition "
736 "%c without a matching partition A\n",
737 ✗ nal->type == H264_NAL_DPB ? 'B' : 'C');
738 105 break;
739 3090 case H264_NAL_SEI:
740
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3090 times.
 3090 if (h->setup_finished) {
741 ✗ avpriv_request_sample(avctx, "Late SEI");
742 ✗ break;
743 }
744 3090 ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
745
4/4
✓ Branch 0 taken 339 times.
✓ Branch 1 taken 2751 times.
✓ Branch 2 taken 31 times.
✓ Branch 3 taken 308 times.
 3090 h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1;
746
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3090 times.
 3090 if (avctx->debug & FF_DEBUG_GREEN_MD)
747 ✗ debug_green_metadata(&h->sei.green_metadata, h->avctx);
748
3/4
✓ Branch 0 taken 7 times.
✓ Branch 1 taken 3083 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 7 times.
 3090 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
749 ✗ goto end;
750 3090 break;
751 1103 case H264_NAL_SPS: {
752 1103 GetBitContext tmp_gb = nal->gb;
753
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 1103 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 1103 if (FF_HW_HAS_CB(avctx, decode_params)) {
754 ✗ ret = FF_HW_CALL(avctx, decode_params,
755 nal->type, nal->raw_data, nal->raw_size);
756 ✗ if (ret < 0)
757 ✗ goto end;
758 }
759
2/2
✓ Branch 1 taken 1101 times.
✓ Branch 2 taken 2 times.
 1103 if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
760 1103 break;
761 2 av_log(h->avctx, AV_LOG_DEBUG,
762 "SPS decoding failure, trying again with the complete NAL\n");
763 2 init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
764
1/2
✓ Branch 1 taken 2 times.
✗ Branch 2 not taken.
 2 if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
765 2 break;
766 ✗ ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
767 ✗ break;
768 }
769 7042 case H264_NAL_PPS:
770
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 7042 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 7042 if (FF_HW_HAS_CB(avctx, decode_params)) {
771 ✗ ret = FF_HW_CALL(avctx, decode_params,
772 nal->type, nal->raw_data, nal->raw_size);
773 ✗ if (ret < 0)
774 ✗ goto end;
775 }
776 7042 ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
777 nal->size_bits);
778
3/4
✓ Branch 0 taken 7 times.
✓ Branch 1 taken 7035 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 7 times.
 7042 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
779 ✗ goto end;
780 7042 break;
781 2706 case H264_NAL_AUD:
782 case H264_NAL_END_SEQUENCE:
783 case H264_NAL_END_STREAM:
784 case H264_NAL_FILLER_DATA:
785 case H264_NAL_SPS_EXT:
786 case H264_NAL_AUXILIARY_SLICE:
787 2706 break;
788 ✗ default:
789 ✗ av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
790 nal->type, nal->size_bits);
791 }
792
793
3/4
✓ Branch 0 taken 167 times.
✓ Branch 1 taken 52968 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 167 times.
 53135 if (err < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) {
794 ✗ av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
795 ✗ ret = err;
796 ✗ goto end;
797 }
798 }
799
800 30180 ret = ff_h264_execute_decode_slices(h);
801
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 30180 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 30180 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
802 ✗ goto end;
803
804 // set decode_error_flags to allow users to detect concealed decoding errors
805
4/6
✓ Branch 0 taken 30180 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 17 times.
✓ Branch 3 taken 30163 times.
✓ Branch 4 taken 17 times.
✗ Branch 5 not taken.
 30180 if ((ret < 0 || h->er.error_occurred) && h->cur_pic_ptr) {
806
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 17 times.
 17 if (h->cur_pic_ptr->decode_error_flags) {
807 /* Frame-threading in use */
808 ✗ atomic_int *decode_error = h->cur_pic_ptr->decode_error_flags;
809 /* Using atomics here is not supposed to provide synchronisation;
810 * they are merely used to allow to set decode_error from both
811 * decoding threads in case of coded slices. */
812 ✗ atomic_fetch_or_explicit(decode_error, FF_DECODE_ERROR_DECODE_SLICES,
813 memory_order_relaxed);
814 } else
815 17 h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
816 }
817
818 30180 ret = 0;
819 30180 end:
820
821 #if CONFIG_ERROR_RESILIENCE
822 /*
823 * FIXME: Error handling code does not seem to support interlaced
824 * when slices span multiple rows
825 * The ff_er_add_slice calls don't work right for bottom
826 * fields; they cause massive erroneous error concealing
827 * Error marking covers both fields (top and bottom).
828 * This causes a mismatched s->error_count
829 * and a bad error table. Further, the error count goes to
830 * INT_MAX when called for bottom field, because mb_y is
831 * past end by one (callers fault) and resync_mb_y != 0
832 * causes problems for the first MB line, too.
833 */
834
8/8
✓ Branch 0 taken 22919 times.
✓ Branch 1 taken 7261 times.
✓ Branch 2 taken 22880 times.
✓ Branch 3 taken 39 times.
✓ Branch 4 taken 22130 times.
✓ Branch 5 taken 750 times.
✓ Branch 6 taken 22079 times.
✓ Branch 7 taken 51 times.
 52310 if (!FIELD_PICTURE(h) && h->current_slice && h->enable_er &&
835 22130 !ff_decode_skip_all_pixels(h->avctx)) {
836
837 22079 H264SliceContext *sl = h->slice_ctx;
838
3/4
✓ Branch 0 taken 580 times.
✓ Branch 1 taken 21499 times.
✓ Branch 2 taken 580 times.
✗ Branch 3 not taken.
 22079 int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
839 22079 int decode_error_flags = 0;
840
841 22079 ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr);
842
843
2/2
✓ Branch 0 taken 580 times.
✓ Branch 1 taken 21499 times.
 22079 if (use_last_pic) {
844 580 ff_h264_set_erpic(&h->er.last_pic, &h->last_pic_for_ec);
845 580 sl->ref_list[0][0].parent = &h->last_pic_for_ec;
846 580 memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
847 580 memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
848 580 sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
849
2/2
✓ Branch 0 taken 19463 times.
✓ Branch 1 taken 2036 times.
 21499 } else if (sl->ref_count[0]) {
850 19463 ff_h264_set_erpic(&h->er.last_pic, sl->ref_list[0][0].parent);
851 } else
852 2036 ff_h264_set_erpic(&h->er.last_pic, NULL);
853
854
2/2
✓ Branch 0 taken 19463 times.
✓ Branch 1 taken 2616 times.
 22079 if (sl->ref_count[1])
855 19463 ff_h264_set_erpic(&h->er.next_pic, sl->ref_list[1][0].parent);
856
857 22079 ff_er_frame_end(&h->er, &decode_error_flags);
858
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 22063 times.
 22079 if (decode_error_flags) {
859
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
 16 if (h->cur_pic_ptr->decode_error_flags) {
860 ✗ atomic_int *decode_error = h->cur_pic_ptr->decode_error_flags;
861 ✗ atomic_fetch_or_explicit(decode_error, decode_error_flags,
862 memory_order_relaxed);
863 } else
864 16 h->cur_pic_ptr->f->decode_error_flags |= decode_error_flags;
865 }
866
2/2
✓ Branch 0 taken 580 times.
✓ Branch 1 taken 21499 times.
 22079 if (use_last_pic)
867 580 memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
868 }
869 #endif /* CONFIG_ERROR_RESILIENCE */
870 /* clean up */
871
6/6
✓ Branch 0 taken 29752 times.
✓ Branch 1 taken 428 times.
✓ Branch 2 taken 19770 times.
✓ Branch 3 taken 9982 times.
✓ Branch 4 taken 19604 times.
✓ Branch 5 taken 166 times.
 30180 if (h->cur_pic_ptr && !h->droppable && h->has_slice) {
872 19604 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
873 19604 h->picture_structure == PICT_BOTTOM_FIELD);
874 }
875
876
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30180 times.
 30180 return (ret < 0) ? ret : buf_size;
877 }
878
879 1 static int h264_export_enc_params(AVFrame *f, const H264Picture *p)
880 {
881 AVVideoEncParams *par;
882 1 unsigned int nb_mb = p->mb_height * p->mb_width;
883 unsigned int x, y;
884
885 1 par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_H264, nb_mb);
886
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!par)
887 ✗ return AVERROR(ENOMEM);
888
889 1 par->qp = p->pps->init_qp;
890
891 1 par->delta_qp[1][0] = p->pps->chroma_qp_index_offset[0];
892 1 par->delta_qp[1][1] = p->pps->chroma_qp_index_offset[0];
893 1 par->delta_qp[2][0] = p->pps->chroma_qp_index_offset[1];
894 1 par->delta_qp[2][1] = p->pps->chroma_qp_index_offset[1];
895
896
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 1 times.
 19 for (y = 0; y < p->mb_height; y++)
897
2/2
✓ Branch 0 taken 396 times.
✓ Branch 1 taken 18 times.
 414 for (x = 0; x < p->mb_width; x++) {
898 396 const unsigned int block_idx = y * p->mb_width + x;
899 396 const unsigned int mb_xy = y * p->mb_stride + x;
900 396 AVVideoBlockParams *b = av_video_enc_params_block(par, block_idx);
901
902 396 b->src_x = x * 16;
903 396 b->src_y = y * 16;
904 396 b->w = 16;
905 396 b->h = 16;
906
907 396 b->delta_qp = p->qscale_table[mb_xy] - par->qp;
908 }
909
910 1 return 0;
911 }
912
913 25175 static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
914 {
915 int ret;
916
917
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25175 times.
 25175 ret = av_frame_ref(dst, srcp->needs_fg ? srcp->f_grain : srcp->f);
918
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25175 times.
 25175 if (ret < 0)
919 ✗ return ret;
920
921
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 25175 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 25175 if (srcp->needs_fg && (ret = av_frame_copy_props(dst, srcp->f)) < 0)
922 ✗ return ret;
923
924
2/2
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 25133 times.
 25175 if (srcp->decode_error_flags) {
925 42 atomic_int *decode_error = srcp->decode_error_flags;
926 /* The following is not supposed to provide synchronisation at all:
927 * given that srcp has already finished decoding, decode_error
928 * has already been set to its final value. */
929 42 dst->decode_error_flags |= atomic_load_explicit(decode_error, memory_order_relaxed);
930 }
931
932 25175 av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.common.frame_packing), 0);
933
934
2/2
✓ Branch 0 taken 34 times.
✓ Branch 1 taken 25141 times.
 25175 if (srcp->sei_recovery_frame_cnt == 0)
935 34 dst->flags |= AV_FRAME_FLAG_KEY;
936
937
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 25174 times.
 25175 if (h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS) {
938 1 ret = h264_export_enc_params(dst, srcp);
939
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (ret < 0)
940 ✗ goto fail;
941 }
942
943
1/2
✓ Branch 0 taken 25175 times.
✗ Branch 1 not taken.
 25175 if (!(h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN))
944 25175 av_frame_remove_side_data(dst, AV_FRAME_DATA_FILM_GRAIN_PARAMS);
945
946 25175 return 0;
947 ✗ fail:
948 ✗ av_frame_unref(dst);
949 ✗ return ret;
950 }
951
952 ✗ static int is_avcc_extradata(const uint8_t *buf, int buf_size)
953 {
954 ✗ int cnt= buf[5]&0x1f;
955 ✗ const uint8_t *p= buf+6;
956 ✗ if (!cnt)
957 ✗ return 0;
958 ✗ while(cnt--){
959 ✗ int nalsize= AV_RB16(p) + 2;
960 ✗ if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
961 ✗ return 0;
962 ✗ p += nalsize;
963 }
964 ✗ cnt = *(p++);
965 ✗ if(!cnt)
966 ✗ return 0;
967 ✗ while(cnt--){
968 ✗ int nalsize= AV_RB16(p) + 2;
969 ✗ if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
970 ✗ return 0;
971 ✗ p += nalsize;
972 }
973 ✗ return 1;
974 }
975
976 25175 static int finalize_frame(H264Context *h, AVFrame *dst, H264Picture *out, int *got_frame)
977 {
978 int ret;
979
980
1/2
✓ Branch 0 taken 25175 times.
✗ Branch 1 not taken.
 25175 if (((h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
981
1/2
✓ Branch 0 taken 25175 times.
✗ Branch 1 not taken.
 25175 (h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
982
1/2
✓ Branch 0 taken 25175 times.
✗ Branch 1 not taken.
 25175 out->recovered)) {
983
984
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25175 times.
 25175 if (h->skip_gray > 0 &&
985 ✗ h->non_gray && out->gray &&
986 ✗ !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)
987 )
988 ✗ return 0;
989
990
3/4
✓ Branch 0 taken 25175 times.
✗ Branch 1 not taken.
✓ Branch 3 taken 25101 times.
✓ Branch 4 taken 74 times.
 25175 if (!h->avctx->hwaccel && !ff_decode_skip_all_pixels(h->avctx) &&
991
1/2
✓ Branch 0 taken 25101 times.
✗ Branch 1 not taken.
 25101 (out->field_poc[0] == INT_MAX ||
992
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25101 times.
 25101 out->field_poc[1] == INT_MAX)
993 ) {
994 int p;
995 ✗ AVFrame *f = out->f;
996 ✗ int field = out->field_poc[0] == INT_MAX;
997 uint8_t *dst_data[4];
998 int linesizes[4];
999 const uint8_t *src_data[4];
1000
1001 ✗ av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
1002
1003 ✗ for (p = 0; p<4; p++) {
1004 ✗ dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
1005 ✗ src_data[p] = f->data[p] + field *f->linesize[p];
1006 ✗ linesizes[p] = 2*f->linesize[p];
1007 }
1008
1009 ✗ av_image_copy(dst_data, linesizes, src_data, linesizes,
1010 ✗ f->format, f->width, f->height>>1);
1011 }
1012
1013 25175 ret = output_frame(h, dst, out);
1014
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25175 times.
 25175 if (ret < 0)
1015 ✗ return ret;
1016
1017 25175 *got_frame = 1;
1018
1019 if (CONFIG_MPEGVIDEODEC) {
1020 25175 ff_print_debug_info2(h->avctx, dst,
1021 25175 out->mb_type,
1022 25175 out->qscale_table,
1023 25175 out->motion_val,
1024 out->mb_width, out->mb_height, out->mb_stride, 1);
1025 }
1026 }
1027
1028 25175 return 0;
1029 }
1030
1031 598 static int send_next_delayed_frame(H264Context *h, AVFrame *dst_frame,
1032 int *got_frame, int buf_index)
1033 {
1034 int ret, i, out_idx;
1035 H264Picture *out;
1036
1037 598 h->cur_pic_ptr = NULL;
1038 598 h->first_field = 0;
1039
1040
2/2
✓ Branch 0 taken 300 times.
✓ Branch 1 taken 298 times.
 1196 while (h->delayed_pic[0]) {
1041 300 out = h->delayed_pic[0];
1042 300 out_idx = 0;
1043 300 for (i = 1;
1044 1492 h->delayed_pic[i] &&
1045
4/4
✓ Branch 0 taken 600 times.
✓ Branch 1 taken 292 times.
✓ Branch 2 taken 592 times.
✓ Branch 3 taken 8 times.
 892 !(h->delayed_pic[i]->f->flags & AV_FRAME_FLAG_KEY) &&
1046
1/2
✓ Branch 0 taken 592 times.
✗ Branch 1 not taken.
 592 !h->delayed_pic[i]->mmco_reset;
1047 592 i++)
1048
2/2
✓ Branch 0 taken 117 times.
✓ Branch 1 taken 475 times.
 592 if (h->delayed_pic[i]->poc < out->poc) {
1049 117 out = h->delayed_pic[i];
1050 117 out_idx = i;
1051 }
1052
1053
2/2
✓ Branch 0 taken 851 times.
✓ Branch 1 taken 300 times.
 1151 for (i = out_idx; h->delayed_pic[i]; i++)
1054 851 h->delayed_pic[i] = h->delayed_pic[i + 1];
1055
1056
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 300 times.
 300 if (out) {
1057 300 h->frame_recovered |= out->recovered;
1058 300 out->recovered |= h->frame_recovered & FRAME_RECOVERED_SEI;
1059
1060 300 out->reference &= ~DELAYED_PIC_REF;
1061 300 ret = finalize_frame(h, dst_frame, out, got_frame);
1062
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 300 times.
 300 if (ret < 0)
1063 ✗ return ret;
1064
1/2
✓ Branch 0 taken 300 times.
✗ Branch 1 not taken.
 300 if (*got_frame)
1065 300 break;
1066 }
1067 }
1068
1069 598 return buf_index;
1070 }
1071
1072 30779 static int h264_decode_frame(AVCodecContext *avctx, AVFrame *pict,
1073 int *got_frame, AVPacket *avpkt)
1074 {
1075 30779 const uint8_t *buf = avpkt->data;
1076 30779 int buf_size = avpkt->size;
1077 30779 H264Context *h = avctx->priv_data;
1078 int buf_index;
1079 int ret;
1080
1081 30779 h->flags = avctx->flags;
1082 30779 h->setup_finished = 0;
1083 30779 h->nb_slice_ctx_queued = 0;
1084
1085 30779 ff_h264_unref_picture(&h->last_pic_for_ec);
1086
1087 /* end of stream, output what is still in the buffers */
1088
2/2
✓ Branch 0 taken 598 times.
✓ Branch 1 taken 30181 times.
 30779 if (buf_size == 0)
1089 598 return send_next_delayed_frame(h, pict, got_frame, 0);
1090
1091
2/2
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 30177 times.
 30181 if (av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) {
1092 size_t side_size;
1093 4 uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
1094 4 ff_h264_decode_extradata(side, side_size,
1095 &h->ps, &h->is_avc, &h->nal_length_size,
1096 avctx->err_recognition, avctx);
1097 }
1098
4/10
✓ Branch 0 taken 3433 times.
✓ Branch 1 taken 26748 times.
✓ Branch 2 taken 3433 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✓ Branch 5 taken 3433 times.
✗ Branch 6 not taken.
✗ Branch 7 not taken.
✗ Branch 8 not taken.
✗ Branch 9 not taken.
 30181 if (h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC) {
1099 ✗ if (is_avcc_extradata(buf, buf_size))
1100 ✗ return ff_h264_decode_extradata(buf, buf_size,
1101 &h->ps, &h->is_avc, &h->nal_length_size,
1102 avctx->err_recognition, avctx);
1103 }
1104
1105 30181 buf_index = decode_nal_units(h, avpkt->buf, buf, buf_size);
1106
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 30180 times.
 30181 if (buf_index < 0)
1107 1 return AVERROR_INVALIDDATA;
1108
1109
3/4
✓ Branch 0 taken 428 times.
✓ Branch 1 taken 29752 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 428 times.
 30180 if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
1110 ✗ av_assert0(buf_index <= buf_size);
1111 ✗ return send_next_delayed_frame(h, pict, got_frame, buf_index);
1112 }
1113
1114
6/6
✓ Branch 0 taken 29424 times.
✓ Branch 1 taken 756 times.
✓ Branch 2 taken 28998 times.
✓ Branch 3 taken 426 times.
✓ Branch 4 taken 164 times.
✓ Branch 5 taken 28834 times.
 30180 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && (!h->cur_pic_ptr || !h->has_slice)) {
1115
3/4
✓ Branch 0 taken 390 times.
✓ Branch 1 taken 200 times.
✓ Branch 2 taken 390 times.
✗ Branch 3 not taken.
 590 if (avctx->skip_frame >= AVDISCARD_NONREF ||
1116
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 390 times.
 390 buf_size >= 4 && !memcmp("Q264", buf, 4))
1117 200 return buf_size;
1118 390 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1119 390 return AVERROR_INVALIDDATA;
1120 }
1121
1122
2/2
✓ Branch 0 taken 756 times.
✓ Branch 1 taken 28834 times.
 29590 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1123
4/4
✓ Branch 0 taken 302 times.
✓ Branch 1 taken 454 times.
✓ Branch 2 taken 300 times.
✓ Branch 3 taken 2 times.
 756 (h->mb_y >= h->mb_height && h->mb_height)) {
1124
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 29134 times.
 29134 if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1125 ✗ return ret;
1126
1127 /* Wait for second field. */
1128
2/2
✓ Branch 0 taken 24875 times.
✓ Branch 1 taken 4259 times.
 29134 if (h->next_output_pic) {
1129 24875 ret = finalize_frame(h, pict, h->next_output_pic, got_frame);
1130
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24875 times.
 24875 if (ret < 0)
1131 ✗ return ret;
1132 }
1133 }
1134
1135
3/4
✓ Branch 0 taken 4715 times.
✓ Branch 1 taken 24875 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 4715 times.
 29590 av_assert0(pict->buf[0] || !*got_frame);
1136
1137 29590 ff_h264_unref_picture(&h->last_pic_for_ec);
1138
1139 29590 return buf_size;
1140 }
1141
1142 #define OFFSET(x) offsetof(H264Context, x)
1143 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1144 #define VDX VD | AV_OPT_FLAG_EXPORT
1145 static const AVOption h264_options[] = {
1146 { "is_avc", "is avc", OFFSET(is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VDX },
1147 { "nal_length_size", "nal_length_size", OFFSET(nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, VDX },
1148 { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1149 { "x264_build", "Assume this x264 version if no x264 version found in any SEI", OFFSET(x264_build), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VD },
1150 { "skip_gray", "Do not return gray gap frames", OFFSET(skip_gray), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VD },
1151 { "noref_gray", "Avoid using gray gap frames as references", OFFSET(noref_gray), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VD },
1152 { NULL },
1153 };
1154
1155 static const AVClass h264_class = {
1156 .class_name = "H264 Decoder",
1157 .item_name = av_default_item_name,
1158 .option = h264_options,
1159 .version = LIBAVUTIL_VERSION_INT,
1160 };
1161
1162 const FFCodec ff_h264_decoder = {
1163 .p.name = "h264",
1164 CODEC_LONG_NAME("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1165 .p.type = AVMEDIA_TYPE_VIDEO,
1166 .p.id = AV_CODEC_ID_H264,
1167 .priv_data_size = sizeof(H264Context),
1168 .init = h264_decode_init,
1169 .close = h264_decode_end,
1170 FF_CODEC_DECODE_CB(h264_decode_frame),
1171 .p.capabilities = AV_CODEC_CAP_DR1 |
1172 AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
1173 AV_CODEC_CAP_FRAME_THREADS,
1174 .hw_configs = (const AVCodecHWConfigInternal *const []) {
1175 #if CONFIG_H264_DXVA2_HWACCEL
1176 HWACCEL_DXVA2(h264),
1177 #endif
1178 #if CONFIG_H264_D3D11VA_HWACCEL
1179 HWACCEL_D3D11VA(h264),
1180 #endif
1181 #if CONFIG_H264_D3D11VA2_HWACCEL
1182 HWACCEL_D3D11VA2(h264),
1183 #endif
1184 #if CONFIG_H264_D3D12VA_HWACCEL
1185 HWACCEL_D3D12VA(h264),
1186 #endif
1187 #if CONFIG_H264_NVDEC_HWACCEL
1188 HWACCEL_NVDEC(h264),
1189 #endif
1190 #if CONFIG_H264_NVDEC_CUARRAY_HWACCEL
1191 HWACCEL_NVDEC_CUARRAY(h264),
1192 #endif
1193 #if CONFIG_H264_VAAPI_HWACCEL
1194 HWACCEL_VAAPI(h264),
1195 #endif
1196 #if CONFIG_H264_VDPAU_HWACCEL
1197 HWACCEL_VDPAU(h264),
1198 #endif
1199 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1200 HWACCEL_VIDEOTOOLBOX(h264),
1201 #endif
1202 #if CONFIG_H264_VULKAN_HWACCEL
1203 HWACCEL_VULKAN(h264),
1204 #endif
1205 NULL
1206 },
1207 .caps_internal = FF_CODEC_CAP_EXPORTS_CROPPING |
1208 FF_CODEC_CAP_INIT_CLEANUP,
1209 .flush = h264_decode_flush,
1210 UPDATE_THREAD_CONTEXT(ff_h264_update_thread_context),
1211 UPDATE_THREAD_CONTEXT_FOR_USER(ff_h264_update_thread_context_for_user),
1212 .p.profiles = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1213 .p.priv_class = &h264_class,
1214 };
1215