2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #include "libavutil/avassert.h"
29 #include "libavutil/imgutils.h"
30 #include "libavutil/timer.h"
33 #include "cabac_functions.h"
35 #include "error_resilience.h"
39 #include "h264chroma.h"
40 #include "h264_mvpred.h"
43 #include "mpegutils.h"
44 #include "rectangle.h"
46 #include "vdpau_internal.h"
48 void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
50 int off = offsetof(H264Picture, tf) + sizeof(pic->tf);
56 ff_thread_release_buffer(h->avctx, &pic->tf);
57 av_buffer_unref(&pic->hwaccel_priv_buf);
59 av_buffer_unref(&pic->qscale_table_buf);
60 av_buffer_unref(&pic->mb_type_buf);
61 for (i = 0; i < 2; i++) {
62 av_buffer_unref(&pic->motion_val_buf[i]);
63 av_buffer_unref(&pic->ref_index_buf[i]);
66 memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
69 int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
73 av_assert0(!dst->f.buf[0]);
74 av_assert0(src->f.buf[0]);
78 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
82 dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf);
83 dst->mb_type_buf = av_buffer_ref(src->mb_type_buf);
84 if (!dst->qscale_table_buf || !dst->mb_type_buf)
86 dst->qscale_table = src->qscale_table;
87 dst->mb_type = src->mb_type;
89 for (i = 0; i < 2; i++) {
90 dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]);
91 dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]);
92 if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i])
94 dst->motion_val[i] = src->motion_val[i];
95 dst->ref_index[i] = src->ref_index[i];
98 if (src->hwaccel_picture_private) {
99 dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
100 if (!dst->hwaccel_priv_buf)
102 dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
105 for (i = 0; i < 2; i++)
106 dst->field_poc[i] = src->field_poc[i];
108 memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc));
109 memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count));
112 dst->frame_num = src->frame_num;
113 dst->mmco_reset = src->mmco_reset;
114 dst->pic_id = src->pic_id;
115 dst->long_ref = src->long_ref;
116 dst->mbaff = src->mbaff;
117 dst->field_picture = src->field_picture;
118 dst->needs_realloc = src->needs_realloc;
119 dst->reference = src->reference;
120 dst->crop = src->crop;
121 dst->crop_left = src->crop_left;
122 dst->crop_top = src->crop_top;
123 dst->recovered = src->recovered;
124 dst->invalid_gap = src->invalid_gap;
125 dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt;
129 ff_h264_unref_picture(h, dst);
133 void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
135 #if CONFIG_ERROR_RESILIENCE
138 memset(dst, 0, sizeof(*dst));
146 for (i = 0; i < 2; i++) {
147 dst->motion_val[i] = src->motion_val[i];
148 dst->ref_index[i] = src->ref_index[i];
151 dst->mb_type = src->mb_type;
152 dst->field_picture = src->field_picture;
153 #endif /* CONFIG_ERROR_RESILIENCE */
156 int ff_h264_field_end(H264Context *h, int in_setup)
158 AVCodecContext *const avctx = h->avctx;
162 if (CONFIG_H264_VDPAU_DECODER &&
163 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
164 ff_vdpau_h264_set_reference_frames(h);
166 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
168 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
169 h->prev_poc_msb = h->poc_msb;
170 h->prev_poc_lsb = h->poc_lsb;
172 h->prev_frame_num_offset = h->frame_num_offset;
173 h->prev_frame_num = h->frame_num;
174 h->outputed_poc = h->next_outputed_poc;
177 if (avctx->hwaccel) {
178 if (avctx->hwaccel->end_frame(avctx) < 0)
179 av_log(avctx, AV_LOG_ERROR,
180 "hardware accelerator failed to decode picture\n");
183 if (CONFIG_H264_VDPAU_DECODER &&
184 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
185 ff_vdpau_h264_picture_complete(h);
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.
199 if (CONFIG_ERROR_RESILIENCE && !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);
203 if (!in_setup && !h->droppable)
204 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
205 h->picture_structure == PICT_BOTTOM_FIELD);
208 h->current_slice = 0;