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ffmpeg/libavcodec/h264_picture.c

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/*
* H.26L/H.264/AVC/JVT/14496-10/... decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* H.264 / AVC / MPEG-4 part10 codec.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "libavutil/avassert.h"
#include "error_resilience.h"
#include "avcodec.h"
#include "h264dec.h"
#include "mpegutils.h"
#include "thread.h"
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
{
int off = offsetof(H264Picture, tf_grain) + sizeof(pic->tf_grain);
int i;
if (!pic->f || !pic->f->buf[0])
return;
ff_thread_release_buffer(h->avctx, &pic->tf);
ff_thread_release_buffer(h->avctx, &pic->tf_grain);
av_buffer_unref(&pic->hwaccel_priv_buf);
av_buffer_unref(&pic->qscale_table_buf);
av_buffer_unref(&pic->mb_type_buf);
av_buffer_unref(&pic->pps_buf);
for (i = 0; i < 2; i++) {
av_buffer_unref(&pic->motion_val_buf[i]);
av_buffer_unref(&pic->ref_index_buf[i]);
}
memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
}
static void h264_copy_picture_params(H264Picture *dst, const H264Picture *src)
{
dst->qscale_table = src->qscale_table;
dst->mb_type = src->mb_type;
dst->pps = src->pps;
for (int i = 0; i < 2; i++) {
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
for (int i = 0; i < 2; i++)
dst->field_poc[i] = src->field_poc[i];
memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc));
memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count));
dst->poc = src->poc;
dst->frame_num = src->frame_num;
dst->mmco_reset = src->mmco_reset;
dst->long_ref = src->long_ref;
dst->mbaff = src->mbaff;
dst->field_picture = src->field_picture;
dst->reference = src->reference;
dst->recovered = src->recovered;
dst->invalid_gap = src->invalid_gap;
dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt;
dst->mb_width = src->mb_width;
dst->mb_height = src->mb_height;
dst->mb_stride = src->mb_stride;
dst->needs_fg = src->needs_fg;
}
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
{
int ret, i;
av_assert0(!dst->f->buf[0]);
av_assert0(src->f->buf[0]);
av_assert0(src->tf.f == src->f);
dst->tf.f = dst->f;
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
if (ret < 0)
goto fail;
if (src->needs_fg) {
av_assert0(src->tf_grain.f == src->f_grain);
dst->tf_grain.f = dst->f_grain;
ret = ff_thread_ref_frame(&dst->tf_grain, &src->tf_grain);
if (ret < 0)
goto fail;
}
dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf);
dst->mb_type_buf = av_buffer_ref(src->mb_type_buf);
dst->pps_buf = av_buffer_ref(src->pps_buf);
if (!dst->qscale_table_buf || !dst->mb_type_buf || !dst->pps_buf) {
ret = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < 2; i++) {
dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]);
dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]);
if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i]) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
if (src->hwaccel_picture_private) {
dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
if (!dst->hwaccel_priv_buf) {
ret = AVERROR(ENOMEM);
goto fail;
}
dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
}
h264_copy_picture_params(dst, src);
return 0;
fail:
ff_h264_unref_picture(h, dst);
return ret;
}
int ff_h264_replace_picture(H264Context *h, H264Picture *dst, const H264Picture *src)
{
int ret, i;
if (!src->f || !src->f->buf[0]) {
ff_h264_unref_picture(h, dst);
return 0;
}
av_assert0(src->tf.f == src->f);
dst->tf.f = dst->f;
ff_thread_release_buffer(h->avctx, &dst->tf);
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
if (ret < 0)
goto fail;
if (src->needs_fg) {
av_assert0(src->tf_grain.f == src->f_grain);
dst->tf_grain.f = dst->f_grain;
ff_thread_release_buffer(h->avctx, &dst->tf_grain);
ret = ff_thread_ref_frame(&dst->tf_grain, &src->tf_grain);
if (ret < 0)
goto fail;
}
ret = av_buffer_replace(&dst->qscale_table_buf, src->qscale_table_buf);
ret |= av_buffer_replace(&dst->mb_type_buf, src->mb_type_buf);
ret |= av_buffer_replace(&dst->pps_buf, src->pps_buf);
if (ret < 0)
goto fail;
for (i = 0; i < 2; i++) {
ret = av_buffer_replace(&dst->motion_val_buf[i], src->motion_val_buf[i]);
ret |= av_buffer_replace(&dst->ref_index_buf[i], src->ref_index_buf[i]);
if (ret < 0)
goto fail;
}
ret = av_buffer_replace(&dst->hwaccel_priv_buf, src->hwaccel_priv_buf);
if (ret < 0)
goto fail;
dst->hwaccel_picture_private = src->hwaccel_picture_private;
h264_copy_picture_params(dst, src);
return 0;
fail:
ff_h264_unref_picture(h, dst);
return ret;
}
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
{
#if CONFIG_ERROR_RESILIENCE
int i;
memset(dst, 0, sizeof(*dst));
if (!src)
return;
dst->f = src->f;
dst->tf = &src->tf;
for (i = 0; i < 2; i++) {
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
dst->mb_type = src->mb_type;
dst->field_picture = src->field_picture;
#endif /* CONFIG_ERROR_RESILIENCE */
}
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
{
AVCodecContext *const avctx = h->avctx;
H264Picture *cur = h->cur_pic_ptr;
int err = 0;
h->mb_y = 0;
if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
if (!h->droppable) {
err = ff_h264_execute_ref_pic_marking(h);
h->poc.prev_poc_msb = h->poc.poc_msb;
h->poc.prev_poc_lsb = h->poc.poc_lsb;
}
h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
h->poc.prev_frame_num = h->poc.frame_num;
}
if (avctx->hwaccel) {
err = avctx->hwaccel->end_frame(avctx);
if (err < 0)
av_log(avctx, AV_LOG_ERROR,
"hardware accelerator failed to decode picture\n");
} else if (!in_setup && cur->needs_fg && (!FIELD_PICTURE(h) || !h->first_field)) {
AVFrameSideData *sd = av_frame_get_side_data(cur->f, AV_FRAME_DATA_FILM_GRAIN_PARAMS);
err = AVERROR_INVALIDDATA;
if (sd) // a decoding error may have happened before the side data could be allocated
err = ff_h274_apply_film_grain(cur->f_grain, cur->f, &h->h274db,
(AVFilmGrainParams *) sd->data);
if (err < 0) {
av_log(h->avctx, AV_LOG_WARNING, "Failed synthesizing film "
"grain, ignoring: %s\n", av_err2str(err));
cur->needs_fg = 0;
err = 0;
}
}
if (!in_setup && !h->droppable)
ff_thread_report_progress(&cur->tf, INT_MAX,
h->picture_structure == PICT_BOTTOM_FIELD);
emms_c();
h->current_slice = 0;
return err;
}
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