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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 / MPEG4 part10 codec. | |
25 | * @author Michael Niedermayer <michaelni@gmx.at> | |
26 | */ | |
27 | ||
28 | #include "libavutil/avassert.h" | |
29 | #include "libavutil/imgutils.h" | |
30 | #include "libavutil/timer.h" | |
31 | #include "internal.h" | |
32 | #include "cabac.h" | |
33 | #include "cabac_functions.h" | |
34 | #include "error_resilience.h" | |
35 | #include "avcodec.h" | |
36 | #include "h264.h" | |
37 | #include "h264data.h" | |
38 | #include "h264chroma.h" | |
39 | #include "h264_mvpred.h" | |
40 | #include "golomb.h" | |
41 | #include "mathops.h" | |
42 | #include "mpegutils.h" | |
43 | #include "rectangle.h" | |
44 | #include "thread.h" | |
45 | #include "vdpau_internal.h" | |
46 | ||
47 | void ff_h264_unref_picture(H264Context *h, H264Picture *pic) | |
48 | { | |
49 | int off = offsetof(H264Picture, tf) + sizeof(pic->tf); | |
50 | int i; | |
51 | ||
52 | if (!pic->f.buf[0]) | |
53 | return; | |
54 | ||
55 | ff_thread_release_buffer(h->avctx, &pic->tf); | |
56 | av_buffer_unref(&pic->hwaccel_priv_buf); | |
57 | ||
58 | av_buffer_unref(&pic->qscale_table_buf); | |
59 | av_buffer_unref(&pic->mb_type_buf); | |
60 | for (i = 0; i < 2; i++) { | |
61 | av_buffer_unref(&pic->motion_val_buf[i]); | |
62 | av_buffer_unref(&pic->ref_index_buf[i]); | |
63 | } | |
64 | ||
65 | memset((uint8_t*)pic + off, 0, sizeof(*pic) - off); | |
66 | } | |
67 | ||
68 | int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src) | |
69 | { | |
70 | int ret, i; | |
71 | ||
72 | av_assert0(!dst->f.buf[0]); | |
73 | av_assert0(src->f.buf[0]); | |
74 | ||
75 | src->tf.f = &src->f; | |
76 | dst->tf.f = &dst->f; | |
77 | ret = ff_thread_ref_frame(&dst->tf, &src->tf); | |
78 | if (ret < 0) | |
79 | goto fail; | |
80 | ||
81 | dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf); | |
82 | dst->mb_type_buf = av_buffer_ref(src->mb_type_buf); | |
83 | if (!dst->qscale_table_buf || !dst->mb_type_buf) | |
84 | goto fail; | |
85 | dst->qscale_table = src->qscale_table; | |
86 | dst->mb_type = src->mb_type; | |
87 | ||
88 | for (i = 0; i < 2; i++) { | |
89 | dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]); | |
90 | dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]); | |
91 | if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i]) | |
92 | goto fail; | |
93 | dst->motion_val[i] = src->motion_val[i]; | |
94 | dst->ref_index[i] = src->ref_index[i]; | |
95 | } | |
96 | ||
97 | if (src->hwaccel_picture_private) { | |
98 | dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf); | |
99 | if (!dst->hwaccel_priv_buf) | |
100 | goto fail; | |
101 | dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data; | |
102 | } | |
103 | ||
104 | for (i = 0; i < 2; i++) | |
105 | dst->field_poc[i] = src->field_poc[i]; | |
106 | ||
107 | memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc)); | |
108 | memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count)); | |
109 | ||
110 | dst->poc = src->poc; | |
111 | dst->frame_num = src->frame_num; | |
112 | dst->mmco_reset = src->mmco_reset; | |
113 | dst->pic_id = src->pic_id; | |
114 | dst->long_ref = src->long_ref; | |
115 | dst->mbaff = src->mbaff; | |
116 | dst->field_picture = src->field_picture; | |
117 | dst->needs_realloc = src->needs_realloc; | |
118 | dst->reference = src->reference; | |
119 | dst->crop = src->crop; | |
120 | dst->crop_left = src->crop_left; | |
121 | dst->crop_top = src->crop_top; | |
122 | dst->recovered = src->recovered; | |
123 | dst->invalid_gap = src->invalid_gap; | |
124 | dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt; | |
125 | ||
126 | return 0; | |
127 | fail: | |
128 | ff_h264_unref_picture(h, dst); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | void ff_h264_set_erpic(ERPicture *dst, H264Picture *src) | |
133 | { | |
134 | #if CONFIG_ERROR_RESILIENCE | |
135 | int i; | |
136 | ||
137 | memset(dst, 0, sizeof(*dst)); | |
138 | ||
139 | if (!src) | |
140 | return; | |
141 | ||
142 | dst->f = &src->f; | |
143 | dst->tf = &src->tf; | |
144 | ||
145 | for (i = 0; i < 2; i++) { | |
146 | dst->motion_val[i] = src->motion_val[i]; | |
147 | dst->ref_index[i] = src->ref_index[i]; | |
148 | } | |
149 | ||
150 | dst->mb_type = src->mb_type; | |
151 | dst->field_picture = src->field_picture; | |
152 | #endif /* CONFIG_ERROR_RESILIENCE */ | |
153 | } | |
154 | ||
155 | int ff_h264_field_end(H264Context *h, int in_setup) | |
156 | { | |
157 | AVCodecContext *const avctx = h->avctx; | |
158 | int err = 0; | |
159 | h->mb_y = 0; | |
160 | ||
161 | if (CONFIG_H264_VDPAU_DECODER && | |
162 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) | |
163 | ff_vdpau_h264_set_reference_frames(h); | |
164 | ||
165 | if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) { | |
166 | if (!h->droppable) { | |
167 | err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); | |
168 | h->prev_poc_msb = h->poc_msb; | |
169 | h->prev_poc_lsb = h->poc_lsb; | |
170 | } | |
171 | h->prev_frame_num_offset = h->frame_num_offset; | |
172 | h->prev_frame_num = h->frame_num; | |
173 | h->outputed_poc = h->next_outputed_poc; | |
174 | } | |
175 | ||
176 | if (avctx->hwaccel) { | |
177 | if (avctx->hwaccel->end_frame(avctx) < 0) | |
178 | av_log(avctx, AV_LOG_ERROR, | |
179 | "hardware accelerator failed to decode picture\n"); | |
180 | } | |
181 | ||
182 | if (CONFIG_H264_VDPAU_DECODER && | |
183 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) | |
184 | ff_vdpau_h264_picture_complete(h); | |
185 | ||
186 | #if CONFIG_ERROR_RESILIENCE | |
187 | /* | |
188 | * FIXME: Error handling code does not seem to support interlaced | |
189 | * when slices span multiple rows | |
190 | * The ff_er_add_slice calls don't work right for bottom | |
191 | * fields; they cause massive erroneous error concealing | |
192 | * Error marking covers both fields (top and bottom). | |
193 | * This causes a mismatched s->error_count | |
194 | * and a bad error table. Further, the error count goes to | |
195 | * INT_MAX when called for bottom field, because mb_y is | |
196 | * past end by one (callers fault) and resync_mb_y != 0 | |
197 | * causes problems for the first MB line, too. | |
198 | */ | |
199 | if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new) { | |
200 | ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr); | |
201 | ff_er_frame_end(&h->er); | |
202 | } | |
203 | #endif /* CONFIG_ERROR_RESILIENCE */ | |
204 | ||
205 | if (!in_setup && !h->droppable) | |
206 | ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, | |
207 | h->picture_structure == PICT_BOTTOM_FIELD); | |
208 | emms_c(); | |
209 | ||
210 | h->current_slice = 0; | |
211 | ||
212 | return err; | |
213 | } |