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* Intel MediaSDK QSV codec-independent code
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* copyright (c) 2013 Luca Barbato
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* copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
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* This file is part of FFmpeg.
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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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* 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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* 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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#include <sys/types.h>
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#include <mfx/mfxvideo.h>
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#include "libavutil/common.h"
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#include "libavutil/mem.h"
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#include "libavutil/log.h"
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#include "libavutil/pixfmt.h"
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#include "libavutil/time.h"
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#include "qsv_internal.h"
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int ff_qsv_map_pixfmt(enum AVPixelFormat format)
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case AV_PIX_FMT_YUV420P:
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case AV_PIX_FMT_YUVJ420P:
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return AV_PIX_FMT_NV12;
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return AVERROR(ENOSYS);
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static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session)
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if (!q->internal_session) {
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int ret = ff_qsv_init_internal_session(avctx, &q->internal_session);
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q->session = q->internal_session;
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/* make sure the decoder is uninitialized */
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MFXVideoDECODE_Close(q->session);
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int ff_qsv_decode_init(AVCodecContext *avctx, QSVContext *q, mfxSession session)
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mfxVideoParam param = { { 0 } };
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ret = qsv_init_session(avctx, q, session);
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av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
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ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
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param.mfx.CodecId = ret;
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param.mfx.CodecProfile = avctx->profile;
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param.mfx.CodecLevel = avctx->level;
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param.mfx.FrameInfo.BitDepthLuma = 8;
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param.mfx.FrameInfo.BitDepthChroma = 8;
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param.mfx.FrameInfo.Shift = 0;
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param.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
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param.mfx.FrameInfo.Width = avctx->coded_width;
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param.mfx.FrameInfo.Height = avctx->coded_height;
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param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
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param.IOPattern = q->iopattern;
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param.AsyncDepth = q->async_depth;
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param.ExtParam = q->ext_buffers;
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param.NumExtParam = q->nb_ext_buffers;
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ret = MFXVideoDECODE_Init(q->session, ¶m);
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av_log(avctx, AV_LOG_ERROR, "Error initializing the MFX video decoder\n");
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return ff_qsv_error(ret);
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static int alloc_frame(AVCodecContext *avctx, QSVFrame *frame)
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ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
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if (frame->frame->format == AV_PIX_FMT_QSV) {
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frame->surface = (mfxFrameSurface1*)frame->frame->data[3];
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frame->surface_internal.Info.BitDepthLuma = 8;
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frame->surface_internal.Info.BitDepthChroma = 8;
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frame->surface_internal.Info.FourCC = MFX_FOURCC_NV12;
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frame->surface_internal.Info.Width = avctx->coded_width;
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frame->surface_internal.Info.Height = avctx->coded_height;
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frame->surface_internal.Info.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
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frame->surface_internal.Data.PitchLow = frame->frame->linesize[0];
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frame->surface_internal.Data.Y = frame->frame->data[0];
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frame->surface_internal.Data.UV = frame->frame->data[1];
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frame->surface = &frame->surface_internal;
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static void qsv_clear_unused_frames(QSVContext *q)
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QSVFrame *cur = q->work_frames;
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if (cur->surface && !cur->surface->Data.Locked) {
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av_frame_unref(cur->frame);
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static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
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QSVFrame *frame, **last;
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qsv_clear_unused_frames(q);
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frame = q->work_frames;
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last = &q->work_frames;
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if (!frame->surface) {
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ret = alloc_frame(avctx, frame);
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*surf = frame->surface;
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frame = av_mallocz(sizeof(*frame));
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return AVERROR(ENOMEM);
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frame->frame = av_frame_alloc();
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return AVERROR(ENOMEM);
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ret = alloc_frame(avctx, frame);
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*surf = frame->surface;
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static AVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
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QSVFrame *cur = q->work_frames;
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if (surf == cur->surface)
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int ff_qsv_decode(AVCodecContext *avctx, QSVContext *q,
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AVFrame *frame, int *got_frame,
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mfxFrameSurface1 *insurf;
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mfxFrameSurface1 *outsurf;
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mfxBitstream bs = { { { 0 } } };
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bs.Data = avpkt->data;
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bs.DataLength = avpkt->size;
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bs.MaxLength = bs.DataLength;
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bs.TimeStamp = avpkt->pts;
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ret = get_surface(avctx, q, &insurf);
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ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
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insurf, &outsurf, &sync);
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if (ret == MFX_WRN_DEVICE_BUSY)
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} while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
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if (ret != MFX_ERR_NONE &&
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ret != MFX_ERR_MORE_DATA &&
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ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
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ret != MFX_ERR_MORE_SURFACE) {
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av_log(avctx, AV_LOG_ERROR, "Error during QSV decoding.\n");
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return ff_qsv_error(ret);
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MFXVideoCORE_SyncOperation(q->session, sync, 60000);
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src_frame = find_frame(q, outsurf);
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av_log(avctx, AV_LOG_ERROR,
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"The returned surface does not correspond to any frame\n");
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ret = av_frame_ref(frame, src_frame);
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frame->pkt_pts = frame->pts = outsurf->Data.TimeStamp;
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outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
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outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
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outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
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frame->top_field_first =
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outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
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frame->interlaced_frame =
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!(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
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return bs.DataOffset;
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int ff_qsv_decode_close(QSVContext *q)
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QSVFrame *cur = q->work_frames;
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q->work_frames = cur->next;
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av_frame_free(&cur->frame);
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cur = q->work_frames;
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if (q->internal_session)
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MFXClose(q->internal_session);