FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/h264_picture.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 113 153 73.9%
Branches: 51 88 58.0%

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 #include "libavutil/avassert.h"
29 #include "error_resilience.h"
30 #include "avcodec.h"
31 #include "h264dec.h"
32 #include "mpegutils.h"
33 #include "thread.h"
34 #include "threadframe.h"
35
36 127655 void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
37 {
38 127655 int off = offsetof(H264Picture, f_grain) + sizeof(pic->f_grain);
39 int i;
40
41
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127655 if (!pic->f || !pic->f->buf[0])
42 78090 return;
43
44 49565 ff_thread_release_ext_buffer(h->avctx, &pic->tf);
45 49565 ff_thread_release_buffer(h->avctx, pic->f_grain);
46 49565 av_buffer_unref(&pic->hwaccel_priv_buf);
47
48 49565 av_buffer_unref(&pic->qscale_table_buf);
49 49565 av_buffer_unref(&pic->mb_type_buf);
50 49565 av_buffer_unref(&pic->pps_buf);
51
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148695 for (i = 0; i < 2; i++) {
52 99130 av_buffer_unref(&pic->motion_val_buf[i]);
53 99130 av_buffer_unref(&pic->ref_index_buf[i]);
54 }
55
56 49565 memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
57 }
58
59 25592 static void h264_copy_picture_params(H264Picture *dst, const H264Picture *src)
60 {
61 25592 dst->qscale_table = src->qscale_table;
62 25592 dst->mb_type = src->mb_type;
63 25592 dst->pps = src->pps;
64
65
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76776 for (int i = 0; i < 2; i++) {
66 51184 dst->motion_val[i] = src->motion_val[i];
67 51184 dst->ref_index[i] = src->ref_index[i];
68 }
69
70
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76776 for (int i = 0; i < 2; i++)
71 51184 dst->field_poc[i] = src->field_poc[i];
72
73 25592 memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc));
74 25592 memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count));
75
76 25592 dst->poc = src->poc;
77 25592 dst->frame_num = src->frame_num;
78 25592 dst->mmco_reset = src->mmco_reset;
79 25592 dst->long_ref = src->long_ref;
80 25592 dst->mbaff = src->mbaff;
81 25592 dst->field_picture = src->field_picture;
82 25592 dst->reference = src->reference;
83 25592 dst->recovered = src->recovered;
84 25592 dst->invalid_gap = src->invalid_gap;
85 25592 dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt;
86 25592 dst->mb_width = src->mb_width;
87 25592 dst->mb_height = src->mb_height;
88 25592 dst->mb_stride = src->mb_stride;
89 25592 dst->needs_fg = src->needs_fg;
90 25592 }
91
92 25274 int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
93 {
94 int ret, i;
95
96
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25274 av_assert0(!dst->f->buf[0]);
97
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25274 av_assert0(src->f->buf[0]);
98
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25274 av_assert0(src->tf.f == src->f);
99
100 25274 dst->tf.f = dst->f;
101 25274 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
102
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25274 if (ret < 0)
103 goto fail;
104
105
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25274 if (src->needs_fg) {
106 ret = av_frame_ref(dst->f_grain, src->f_grain);
107 if (ret < 0)
108 goto fail;
109 }
110
111 25274 dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf);
112 25274 dst->mb_type_buf = av_buffer_ref(src->mb_type_buf);
113 25274 dst->pps_buf = av_buffer_ref(src->pps_buf);
114
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25274 if (!dst->qscale_table_buf || !dst->mb_type_buf || !dst->pps_buf) {
115 ret = AVERROR(ENOMEM);
116 goto fail;
117 }
118
119
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75822 for (i = 0; i < 2; i++) {
120 50548 dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]);
121 50548 dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]);
122
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50548 if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i]) {
123 ret = AVERROR(ENOMEM);
124 goto fail;
125 }
126 }
127
128
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25274 if (src->hwaccel_picture_private) {
129 dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
130 if (!dst->hwaccel_priv_buf) {
131 ret = AVERROR(ENOMEM);
132 goto fail;
133 }
134 dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
135 }
136
137 25274 h264_copy_picture_params(dst, src);
138
139 25274 return 0;
140 fail:
141 ff_h264_unref_picture(h, dst);
142 return ret;
143 }
144
145 2294 int ff_h264_replace_picture(H264Context *h, H264Picture *dst, const H264Picture *src)
146 {
147 int ret, i;
148
149
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2294 if (!src->f || !src->f->buf[0]) {
150 1976 ff_h264_unref_picture(h, dst);
151 1976 return 0;
152 }
153
154
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318 av_assert0(src->tf.f == src->f);
155
156 318 dst->tf.f = dst->f;
157 318 ff_thread_release_ext_buffer(h->avctx, &dst->tf);
158 318 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
159
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318 if (ret < 0)
160 goto fail;
161
162
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318 if (src->needs_fg) {
163 ff_thread_release_buffer(h->avctx, dst->f_grain);
164 ret = av_frame_ref(dst->f_grain, src->f_grain);
165 if (ret < 0)
166 goto fail;
167 }
168
169 318 ret = av_buffer_replace(&dst->qscale_table_buf, src->qscale_table_buf);
170 318 ret |= av_buffer_replace(&dst->mb_type_buf, src->mb_type_buf);
171 318 ret |= av_buffer_replace(&dst->pps_buf, src->pps_buf);
172
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318 if (ret < 0)
173 goto fail;
174
175
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954 for (i = 0; i < 2; i++) {
176 636 ret = av_buffer_replace(&dst->motion_val_buf[i], src->motion_val_buf[i]);
177 636 ret |= av_buffer_replace(&dst->ref_index_buf[i], src->ref_index_buf[i]);
178
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636 if (ret < 0)
179 goto fail;
180 }
181
182 318 ret = av_buffer_replace(&dst->hwaccel_priv_buf, src->hwaccel_priv_buf);
183
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318 if (ret < 0)
184 goto fail;
185
186 318 dst->hwaccel_picture_private = src->hwaccel_picture_private;
187
188 318 h264_copy_picture_params(dst, src);
189
190 318 return 0;
191 fail:
192 ff_h264_unref_picture(h, dst);
193 return ret;
194 }
195
196 129022 void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
197 {
198 #if CONFIG_ERROR_RESILIENCE
199 int i;
200
201 129022 memset(dst, 0, sizeof(*dst));
202
203
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129022 if (!src)
204 83238 return;
205
206 45784 dst->f = src->f;
207 45784 dst->tf = &src->tf;
208
209
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137352 for (i = 0; i < 2; i++) {
210 91568 dst->motion_val[i] = src->motion_val[i];
211 91568 dst->ref_index[i] = src->ref_index[i];
212 }
213
214 45784 dst->mb_type = src->mb_type;
215 45784 dst->field_picture = src->field_picture;
216 #endif /* CONFIG_ERROR_RESILIENCE */
217 }
218
219 26856 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
220 {
221 26856 AVCodecContext *const avctx = h->avctx;
222 26856 H264Picture *cur = h->cur_pic_ptr;
223 26856 int err = 0;
224 26856 h->mb_y = 0;
225
226
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26856 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
227
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26814 if (!h->droppable) {
228 17591 err = ff_h264_execute_ref_pic_marking(h);
229 17591 h->poc.prev_poc_msb = h->poc.poc_msb;
230 17591 h->poc.prev_poc_lsb = h->poc.poc_lsb;
231 }
232 26814 h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
233 26814 h->poc.prev_frame_num = h->poc.frame_num;
234 }
235
236
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26856 if (avctx->hwaccel) {
237 err = avctx->hwaccel->end_frame(avctx);
238 if (err < 0)
239 av_log(avctx, AV_LOG_ERROR,
240 "hardware accelerator failed to decode picture\n");
241
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26856 } else if (!in_setup && cur->needs_fg && (!FIELD_PICTURE(h) || !h->first_field)) {
242 AVFrameSideData *sd = av_frame_get_side_data(cur->f, AV_FRAME_DATA_FILM_GRAIN_PARAMS);
243
244 err = AVERROR_INVALIDDATA;
245 if (sd) // a decoding error may have happened before the side data could be allocated
246 err = ff_h274_apply_film_grain(cur->f_grain, cur->f, &h->h274db,
247 (AVFilmGrainParams *) sd->data);
248 if (err < 0) {
249 av_log(h->avctx, AV_LOG_WARNING, "Failed synthesizing film "
250 "grain, ignoring: %s\n", av_err2str(err));
251 cur->needs_fg = 0;
252 err = 0;
253 }
254 }
255
256
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26856 if (!in_setup && !h->droppable)
257 17549 ff_thread_report_progress(&cur->tf, INT_MAX,
258 17549 h->picture_structure == PICT_BOTTOM_FIELD);
259 26856 emms_c();
260
261 26856 h->current_slice = 0;
262
263 26856 return err;
264 }
265