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/*
* DXVA2 HW acceleration.
*
* copyright (c) 2010 Laurent Aimar
*
* 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 <assert.h>
#include <string.h>
#include "libavutil/log.h"
#include "libavutil/time.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "dxva2_internal.h"
void *ff_dxva2_get_surface(const AVFrame *frame)
{
return frame->data[3];
}
unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx,
const AVFrame *frame)
{
void *surface = ff_dxva2_get_surface(frame);
unsigned i;
for (i = 0; i < ctx->surface_count; i++)
if (ctx->surface[i] == surface)
return i;
assert(0);
return 0;
}
int ff_dxva2_commit_buffer(AVCodecContext *avctx,
struct dxva_context *ctx,
DXVA2_DecodeBufferDesc *dsc,
unsigned type, const void *data, unsigned size,
unsigned mb_count)
{
void *dxva_data;
unsigned dxva_size;
int result;
HRESULT hr;
hr = IDirectXVideoDecoder_GetBuffer(ctx->decoder, type,
&dxva_data, &dxva_size);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %u: 0x%lx\n",
type, hr);
return -1;
}
if (size <= dxva_size) {
memcpy(dxva_data, data, size);
memset(dsc, 0, sizeof(*dsc));
dsc->CompressedBufferType = type;
dsc->DataSize = size;
dsc->NumMBsInBuffer = mb_count;
result = 0;
} else {
av_log(avctx, AV_LOG_ERROR, "Buffer for type %u was too small\n", type);
result = -1;
}
hr = IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR,
"Failed to release buffer type %u: 0x%lx\n",
type, hr);
result = -1;
}
return result;
}
int ff_dxva2_common_end_frame(AVCodecContext *avctx, AVFrame *frame,
const void *pp, unsigned pp_size,
const void *qm, unsigned qm_size,
int (*commit_bs_si)(AVCodecContext *,
DXVA2_DecodeBufferDesc *bs,
DXVA2_DecodeBufferDesc *slice))
{
struct dxva_context *ctx = avctx->hwaccel_context;
unsigned buffer_count = 0;
DXVA2_DecodeBufferDesc buffer[4];
DXVA2_DecodeExecuteParams exec = { 0 };
int result, runs = 0;
HRESULT hr;
do {
hr = IDirectXVideoDecoder_BeginFrame(ctx->decoder,
ff_dxva2_get_surface(frame),
NULL);
if (hr == E_PENDING)
av_usleep(2000);
} while (hr == E_PENDING && ++runs < 50);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to begin frame: 0x%lx\n", hr);
return -1;
}
result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
DXVA2_PictureParametersBufferType,
pp, pp_size, 0);
if (result) {
av_log(avctx, AV_LOG_ERROR,
"Failed to add picture parameter buffer\n");
goto end;
}
buffer_count++;
if (qm_size > 0) {
result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
DXVA2_InverseQuantizationMatrixBufferType,
qm, qm_size, 0);
if (result) {
av_log(avctx, AV_LOG_ERROR,
"Failed to add inverse quantization matrix buffer\n");
goto end;
}
buffer_count++;
}
result = commit_bs_si(avctx,
&buffer[buffer_count + 0],
&buffer[buffer_count + 1]);
if (result) {
av_log(avctx, AV_LOG_ERROR,
"Failed to add bitstream or slice control buffer\n");
goto end;
}
buffer_count += 2;
/* TODO Film Grain when possible */
assert(buffer_count == 1 + (qm_size > 0) + 2);
exec.NumCompBuffers = buffer_count;
exec.pCompressedBuffers = buffer;
exec.pExtensionData = NULL;
hr = IDirectXVideoDecoder_Execute(ctx->decoder, &exec);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to execute: 0x%lx\n", hr);
result = -1;
}
end:
hr = IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to end frame: 0x%lx\n", hr);
result = -1;
}
return result;
}
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