mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <mfx/mfxvideo.h>
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#include <stdlib.h>
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#include "libavutil/dict.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_qsv.h"
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#include "libavutil/opt.h"
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#include "libavcodec/qsv.h"
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#include "ffmpeg.h"
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static AVBufferRef *hw_device_ctx;
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char *qsv_device = NULL;
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static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
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{
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InputStream *ist = s->opaque;
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return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0);
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}
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static void qsv_uninit(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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av_buffer_unref(&ist->hw_frames_ctx);
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}
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static int qsv_device_init(InputStream *ist)
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{
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int err;
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AVDictionary *dict = NULL;
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if (qsv_device) {
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err = av_dict_set(&dict, "child_device", qsv_device, 0);
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if (err < 0)
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return err;
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}
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err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV,
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ist->hwaccel_device, dict, 0);
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if (err < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n");
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goto err_out;
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}
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err_out:
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if (dict)
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av_dict_free(&dict);
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return err;
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}
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int qsv_init(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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AVHWFramesContext *frames_ctx;
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AVQSVFramesContext *frames_hwctx;
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int ret;
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if (!hw_device_ctx) {
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ret = qsv_device_init(ist);
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if (ret < 0)
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return ret;
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}
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av_buffer_unref(&ist->hw_frames_ctx);
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ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!ist->hw_frames_ctx)
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return AVERROR(ENOMEM);
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frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
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frames_hwctx = frames_ctx->hwctx;
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frames_ctx->width = FFALIGN(s->coded_width, 32);
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frames_ctx->height = FFALIGN(s->coded_height, 32);
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frames_ctx->format = AV_PIX_FMT_QSV;
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frames_ctx->sw_format = s->sw_pix_fmt;
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frames_ctx->initial_pool_size = 64 + s->extra_hw_frames;
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frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
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ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
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if (ret < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
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return ret;
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}
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ist->hwaccel_get_buffer = qsv_get_buffer;
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ist->hwaccel_uninit = qsv_uninit;
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return 0;
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}
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