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/*
* 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 <mfx/mfxvideo.h>
#include <stdlib.h>
#include "libavutil/dict.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_qsv.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavcodec/qsv.h"
#include "ffmpeg.h"
char *qsv_device = NULL;
static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
{
InputStream *ist = s->opaque;
return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0);
}
static void qsv_uninit(AVCodecContext *s)
{
InputStream *ist = s->opaque;
av_buffer_unref(&ist->hw_frames_ctx);
}
static int qsv_device_init(InputStream *ist)
{
int err;
AVDictionary *dict = NULL;
if (qsv_device) {
err = av_dict_set(&dict, "child_device", qsv_device, 0);
if (err < 0)
return err;
}
err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV,
ist->hwaccel_device, dict, 0);
if (err < 0) {
av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n");
goto err_out;
}
err_out:
if (dict)
av_dict_free(&dict);
return err;
}
int qsv_init(AVCodecContext *s)
{
InputStream *ist = s->opaque;
AVHWFramesContext *frames_ctx;
AVQSVFramesContext *frames_hwctx;
int ret;
if (!hw_device_ctx) {
ret = qsv_device_init(ist);
if (ret < 0)
return ret;
}
av_buffer_unref(&ist->hw_frames_ctx);
ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
if (!ist->hw_frames_ctx)
return AVERROR(ENOMEM);
frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
frames_hwctx = frames_ctx->hwctx;
frames_ctx->width = FFALIGN(s->coded_width, 32);
frames_ctx->height = FFALIGN(s->coded_height, 32);
frames_ctx->format = AV_PIX_FMT_QSV;
frames_ctx->sw_format = s->sw_pix_fmt;
frames_ctx->initial_pool_size = 64;
frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
return ret;
}
ist->hwaccel_get_buffer = qsv_get_buffer;
ist->hwaccel_uninit = qsv_uninit;
return 0;
}
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