FFmpeg/libavcodec/h264_picture.c
Philip Langdale 9ae766d1c6 avcodec/vdpau: Re-factor pre-hwaccel helper functions into separate header
h264.h and hevc.h are mutually exclusive due to defining some of the same
names. As such, we need to avoid forcing h264.h to be included if we want
hevc decode acceleration to be possible.

However, some of the pre-hwaccel helper functions need h264.h. To avoid
messy collisions, let's move the declaration of all those helpers to
a separate header which we will exclude for the hevc support (which will
be hwaccel-only).

Signed-off-by: Philip Langdale <philipl@overt.org>
2015-05-25 19:50:41 -07:00

234 lines
7.4 KiB
C

/*
* 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 / MPEG4 part10 codec.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/timer.h"
#include "internal.h"
#include "cabac.h"
#include "cabac_functions.h"
#include "error_resilience.h"
#include "avcodec.h"
#include "h264.h"
#include "h264data.h"
#include "h264chroma.h"
#include "h264_mvpred.h"
#include "golomb.h"
#include "mathops.h"
#include "mpegutils.h"
#include "rectangle.h"
#include "thread.h"
#include "vdpau_compat.h"
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
{
int off = offsetof(H264Picture, tf) + sizeof(pic->tf);
int i;
if (!pic->f || !pic->f->buf[0])
return;
ff_thread_release_buffer(h->avctx, &pic->tf);
av_buffer_unref(&pic->hwaccel_priv_buf);
av_buffer_unref(&pic->qscale_table_buf);
av_buffer_unref(&pic->mb_type_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);
}
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]);
src->tf.f = src->f;
dst->tf.f = dst->f;
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
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);
if (!dst->qscale_table_buf || !dst->mb_type_buf)
goto fail;
dst->qscale_table = src->qscale_table;
dst->mb_type = src->mb_type;
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])
goto fail;
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
if (src->hwaccel_picture_private) {
dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
if (!dst->hwaccel_priv_buf)
goto fail;
dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
}
for (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->pic_id = src->pic_id;
dst->long_ref = src->long_ref;
dst->mbaff = src->mbaff;
dst->field_picture = src->field_picture;
dst->reference = src->reference;
dst->crop = src->crop;
dst->crop_left = src->crop_left;
dst->crop_top = src->crop_top;
dst->recovered = src->recovered;
dst->invalid_gap = src->invalid_gap;
dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt;
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;
int err = 0;
h->mb_y = 0;
if (CONFIG_H264_VDPAU_DECODER &&
h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
ff_vdpau_h264_set_reference_frames(h);
if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
if (!h->droppable) {
err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
h->prev_poc_msb = h->poc_msb;
h->prev_poc_lsb = h->poc_lsb;
}
h->prev_frame_num_offset = h->frame_num_offset;
h->prev_frame_num = h->frame_num;
}
if (avctx->hwaccel) {
if (avctx->hwaccel->end_frame(avctx) < 0)
av_log(avctx, AV_LOG_ERROR,
"hardware accelerator failed to decode picture\n");
}
if (CONFIG_H264_VDPAU_DECODER &&
h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
ff_vdpau_h264_picture_complete(h);
#if CONFIG_ERROR_RESILIENCE
av_assert0(sl == h->slice_ctx);
/*
* FIXME: Error handling code does not seem to support interlaced
* when slices span multiple rows
* The ff_er_add_slice calls don't work right for bottom
* fields; they cause massive erroneous error concealing
* Error marking covers both fields (top and bottom).
* This causes a mismatched s->error_count
* and a bad error table. Further, the error count goes to
* INT_MAX when called for bottom field, because mb_y is
* past end by one (callers fault) and resync_mb_y != 0
* causes problems for the first MB line, too.
*/
if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new && h->enable_er) {
int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
if (use_last_pic) {
ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
sl->ref_list[0][0].parent = &h->last_pic_for_ec;
memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
} else if (sl->ref_count[0]) {
ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
} else
ff_h264_set_erpic(&sl->er.last_pic, NULL);
if (sl->ref_count[1])
ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
sl->er.ref_count = sl->ref_count[0];
ff_er_frame_end(&sl->er);
if (use_last_pic)
memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
}
#endif /* CONFIG_ERROR_RESILIENCE */
if (!in_setup && !h->droppable)
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
h->picture_structure == PICT_BOTTOM_FIELD);
emms_c();
h->current_slice = 0;
return err;
}