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/*
* VDA H264 HW acceleration.
*
* copyright (c) 2011 Sebastien Zwickert
*
* 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
*/
#include "vda_internal.h"
static int start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
struct vda_context *vda_ctx = avctx->hwaccel_context;
if (!vda_ctx->decoder)
return -1;
vda_ctx->bitstream_size = 0;
return 0;
}
static int decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
struct vda_context *vda_ctx = avctx->hwaccel_context;
void *tmp;
if (!vda_ctx->decoder)
return -1;
tmp = av_fast_realloc(vda_ctx->bitstream, &vda_ctx->ref_size, vda_ctx->bitstream_size+size+4);
if (!tmp)
return AVERROR(ENOMEM);
vda_ctx->bitstream = tmp;
AV_WB32(vda_ctx->bitstream+vda_ctx->bitstream_size, size);
memcpy(vda_ctx->bitstream+vda_ctx->bitstream_size+4, buffer, size);
vda_ctx->bitstream_size += size + 4;
return 0;
}
static int end_frame(AVCodecContext *avctx)
{
H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
AVFrame *frame = (AVFrame*)h->s.current_picture_ptr;
int status;
if (!vda_ctx->decoder || !vda_ctx->bitstream)
return -1;
status = ff_vda_decoder_decode(vda_ctx, vda_ctx->bitstream,
vda_ctx->bitstream_size,
frame->reordered_opaque);
if (status)
av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
return status;
}
AVHWAccel ff_h264_vda_hwaccel = {
.name = "h264_vda",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_H264,
.pix_fmt = PIX_FMT_VDA_VLD,
.capabilities = 0,
.start_frame = start_frame,
.decode_slice = decode_slice,
.end_frame = end_frame,
.priv_data_size = 0,
};
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