libavcodec/qsvdec.c - third_party/ffmpeg - Git at Google

 /*
  * Intel MediaSDK QSV codec-independent code
  *
  * copyright (c) 2013 Luca Barbato
  * copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
  *
  * 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 <string.h>
 #include <sys/types.h>

 #include <mfx/mfxvideo.h>

 #include "libavutil/common.h"
 #include "libavutil/mem.h"
 #include "libavutil/log.h"
 #include "libavutil/pixfmt.h"
 #include "libavutil/time.h"

 #include "avcodec.h"
 #include "internal.h"
 #include "qsv_internal.h"
 #include "qsvdec.h"

 int ff_qsv_map_pixfmt(enum AVPixelFormat format)
 {
     switch (format) {
     case AV_PIX_FMT_YUV420P:
     case AV_PIX_FMT_YUVJ420P:
         return AV_PIX_FMT_NV12;
     default:
         return AVERROR(ENOSYS);
     }
 }

 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session)
 {
     if (!session) {
         if (!q->internal_session) {
             int ret = ff_qsv_init_internal_session(avctx, &q->internal_session);
             if (ret < 0)
                 return ret;
         }

         q->session = q->internal_session;
     } else {
         q->session = session;
     }

     /* make sure the decoder is uninitialized */
     MFXVideoDECODE_Close(q->session);

     return 0;
 }

 int ff_qsv_decode_init(AVCodecContext *avctx, QSVContext *q, mfxSession session)
 {
     mfxVideoParam param = { { 0 } };
     int ret;

     ret = qsv_init_session(avctx, q, session);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
         return ret;
     }


     ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
     if (ret < 0)
         return ret;

     param.mfx.CodecId      = ret;
     param.mfx.CodecProfile = avctx->profile;
     param.mfx.CodecLevel   = avctx->level;

     param.mfx.FrameInfo.BitDepthLuma   = 8;
     param.mfx.FrameInfo.BitDepthChroma = 8;
     param.mfx.FrameInfo.Shift          = 0;
     param.mfx.FrameInfo.FourCC         = MFX_FOURCC_NV12;
     param.mfx.FrameInfo.Width          = avctx->coded_width;
     param.mfx.FrameInfo.Height         = avctx->coded_height;
     param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;

     param.IOPattern   = q->iopattern;
     param.AsyncDepth  = q->async_depth;
     param.ExtParam    = q->ext_buffers;
     param.NumExtParam = q->nb_ext_buffers;

     ret = MFXVideoDECODE_Init(q->session, &param);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error initializing the MFX video decoder\n");
         return ff_qsv_error(ret);
     }

     return 0;
 }

 static int alloc_frame(AVCodecContext *avctx, QSVFrame *frame)
 {
     int ret;

     ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
     if (ret < 0)
         return ret;

     if (frame->frame->format == AV_PIX_FMT_QSV) {
         frame->surface = (mfxFrameSurface1*)frame->frame->data[3];
     } else {
         frame->surface_internal.Info.BitDepthLuma   = 8;
         frame->surface_internal.Info.BitDepthChroma = 8;
         frame->surface_internal.Info.FourCC         = MFX_FOURCC_NV12;
         frame->surface_internal.Info.Width          = avctx->coded_width;
         frame->surface_internal.Info.Height         = avctx->coded_height;
         frame->surface_internal.Info.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;

         frame->surface_internal.Data.PitchLow = frame->frame->linesize[0];
         frame->surface_internal.Data.Y        = frame->frame->data[0];
         frame->surface_internal.Data.UV       = frame->frame->data[1];

         frame->surface = &frame->surface_internal;
     }

     return 0;
 }

 static void qsv_clear_unused_frames(QSVContext *q)
 {
     QSVFrame *cur = q->work_frames;
     while (cur) {
         if (cur->surface && !cur->surface->Data.Locked) {
             cur->surface = NULL;
             av_frame_unref(cur->frame);
         }
         cur = cur->next;
     }
 }

 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
 {
     QSVFrame *frame, **last;
     int ret;

     qsv_clear_unused_frames(q);

     frame = q->work_frames;
     last  = &q->work_frames;
     while (frame) {
         if (!frame->surface) {
             ret = alloc_frame(avctx, frame);
             if (ret < 0)
                 return ret;
             *surf = frame->surface;
             return 0;
         }

         last  = &frame->next;
         frame = frame->next;
     }

     frame = av_mallocz(sizeof(*frame));
     if (!frame)
         return AVERROR(ENOMEM);
     frame->frame = av_frame_alloc();
     if (!frame->frame) {
         av_freep(&frame);
         return AVERROR(ENOMEM);
     }
     *last = frame;

     ret = alloc_frame(avctx, frame);
     if (ret < 0)
         return ret;

     *surf = frame->surface;

     return 0;
 }

 static AVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
 {
     QSVFrame *cur = q->work_frames;
     while (cur) {
         if (surf == cur->surface)
             return cur->frame;
         cur = cur->next;
     }
     return NULL;
 }

 int ff_qsv_decode(AVCodecContext *avctx, QSVContext *q,
                   AVFrame *frame, int *got_frame,
                   AVPacket *avpkt)
 {
     mfxFrameSurface1 *insurf;
     mfxFrameSurface1 *outsurf;
     mfxSyncPoint sync;
     mfxBitstream bs = { { { 0 } } };
     int ret;

     if (avpkt->size) {
         bs.Data       = avpkt->data;
         bs.DataLength = avpkt->size;
         bs.MaxLength  = bs.DataLength;
         bs.TimeStamp  = avpkt->pts;
     }

     do {
         ret = get_surface(avctx, q, &insurf);
         if (ret < 0)
             return ret;

         ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
                                               insurf, &outsurf, &sync);
         if (ret == MFX_WRN_DEVICE_BUSY)
             av_usleep(1);

     } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);

     if (ret != MFX_ERR_NONE &&
         ret != MFX_ERR_MORE_DATA &&
         ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
         ret != MFX_ERR_MORE_SURFACE) {
         av_log(avctx, AV_LOG_ERROR, "Error during QSV decoding.\n");
         return ff_qsv_error(ret);
     }

     if (sync) {
         AVFrame *src_frame;

         MFXVideoCORE_SyncOperation(q->session, sync, 60000);

         src_frame = find_frame(q, outsurf);
         if (!src_frame) {
             av_log(avctx, AV_LOG_ERROR,
                    "The returned surface does not correspond to any frame\n");
             return AVERROR_BUG;
         }

         ret = av_frame_ref(frame, src_frame);
         if (ret < 0)
             return ret;

         frame->pkt_pts = frame->pts = outsurf->Data.TimeStamp;

         frame->repeat_pict =
             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
         frame->top_field_first =
             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
         frame->interlaced_frame =
             !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);

         *got_frame = 1;
     }

     return bs.DataOffset;
 }

 int ff_qsv_decode_close(QSVContext *q)
 {
     QSVFrame *cur = q->work_frames;

     while (cur) {
         q->work_frames = cur->next;
         av_frame_free(&cur->frame);
         av_freep(&cur);
         cur = q->work_frames;
     }

     if (q->internal_session)
         MFXClose(q->internal_session);

     return 0;
 }
	/*
	* Intel MediaSDK QSV codec-independent code
	*
	* copyright (c) 2013 Luca Barbato
	* copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
	*
	* 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 <string.h>
	#include <sys/types.h>

	#include <mfx/mfxvideo.h>

	#include "libavutil/common.h"
	#include "libavutil/mem.h"
	#include "libavutil/log.h"
	#include "libavutil/pixfmt.h"
	#include "libavutil/time.h"

	#include "avcodec.h"
	#include "internal.h"
	#include "qsv_internal.h"
	#include "qsvdec.h"

	int ff_qsv_map_pixfmt(enum AVPixelFormat format)
	{
	switch (format) {
	case AV_PIX_FMT_YUV420P:
	case AV_PIX_FMT_YUVJ420P:
	return AV_PIX_FMT_NV12;
	default:
	return AVERROR(ENOSYS);
	}
	}

	static int qsv_init_session(AVCodecContext avctx, QSVContext q, mfxSession session)
	{
	if (!session) {
	if (!q->internal_session) {
	int ret = ff_qsv_init_internal_session(avctx, &q->internal_session);
	if (ret < 0)
	return ret;
	}

	q->session = q->internal_session;
	} else {
	q->session = session;
	}

	/* make sure the decoder is uninitialized */
	MFXVideoDECODE_Close(q->session);

	return 0;
	}

	int ff_qsv_decode_init(AVCodecContext avctx, QSVContext q, mfxSession session)
	{
	mfxVideoParam param = { { 0 } };
	int ret;

	ret = qsv_init_session(avctx, q, session);
	if (ret < 0) {
	av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
	return ret;
	}


	ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
	if (ret < 0)
	return ret;

	param.mfx.CodecId = ret;
	param.mfx.CodecProfile = avctx->profile;
	param.mfx.CodecLevel = avctx->level;

	param.mfx.FrameInfo.BitDepthLuma = 8;
	param.mfx.FrameInfo.BitDepthChroma = 8;
	param.mfx.FrameInfo.Shift = 0;
	param.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
	param.mfx.FrameInfo.Width = avctx->coded_width;
	param.mfx.FrameInfo.Height = avctx->coded_height;
	param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;

	param.IOPattern = q->iopattern;
	param.AsyncDepth = q->async_depth;
	param.ExtParam = q->ext_buffers;
	param.NumExtParam = q->nb_ext_buffers;

	ret = MFXVideoDECODE_Init(q->session, &param);
	if (ret < 0) {
	av_log(avctx, AV_LOG_ERROR, "Error initializing the MFX video decoder\n");
	return ff_qsv_error(ret);
	}

	return 0;
	}

	static int alloc_frame(AVCodecContext avctx, QSVFrame frame)
	{
	int ret;

	ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
	if (ret < 0)
	return ret;

	if (frame->frame->format == AV_PIX_FMT_QSV) {
	frame->surface = (mfxFrameSurface1*)frame->frame->data[3];
	} else {
	frame->surface_internal.Info.BitDepthLuma = 8;
	frame->surface_internal.Info.BitDepthChroma = 8;
	frame->surface_internal.Info.FourCC = MFX_FOURCC_NV12;
	frame->surface_internal.Info.Width = avctx->coded_width;
	frame->surface_internal.Info.Height = avctx->coded_height;
	frame->surface_internal.Info.ChromaFormat = MFX_CHROMAFORMAT_YUV420;

	frame->surface_internal.Data.PitchLow = frame->frame->linesize[0];
	frame->surface_internal.Data.Y = frame->frame->data[0];
	frame->surface_internal.Data.UV = frame->frame->data[1];

	frame->surface = &frame->surface_internal;
	}

	return 0;
	}

	static void qsv_clear_unused_frames(QSVContext *q)
	{
	QSVFrame *cur = q->work_frames;
	while (cur) {
	if (cur->surface && !cur->surface->Data.Locked) {
	cur->surface = NULL;
	av_frame_unref(cur->frame);
	}
	cur = cur->next;
	}
	}

	static int get_surface(AVCodecContext avctx, QSVContext q, mfxFrameSurface1 **surf)
	{
	QSVFrame frame, *last;
	int ret;

	qsv_clear_unused_frames(q);

	frame = q->work_frames;
	last = &q->work_frames;
	while (frame) {
	if (!frame->surface) {
	ret = alloc_frame(avctx, frame);
	if (ret < 0)
	return ret;
	*surf = frame->surface;
	return 0;
	}

	last = &frame->next;
	frame = frame->next;
	}

	frame = av_mallocz(sizeof(*frame));
	if (!frame)
	return AVERROR(ENOMEM);
	frame->frame = av_frame_alloc();
	if (!frame->frame) {
	av_freep(&frame);
	return AVERROR(ENOMEM);
	}
	*last = frame;

	ret = alloc_frame(avctx, frame);
	if (ret < 0)
	return ret;

	*surf = frame->surface;

	return 0;
	}

	static AVFrame find_frame(QSVContext q, mfxFrameSurface1 *surf)
	{
	QSVFrame *cur = q->work_frames;
	while (cur) {
	if (surf == cur->surface)
	return cur->frame;
	cur = cur->next;
	}
	return NULL;
	}

	int ff_qsv_decode(AVCodecContext avctx, QSVContext q,
	AVFrame frame, int got_frame,
	AVPacket *avpkt)
	{
	mfxFrameSurface1 *insurf;
	mfxFrameSurface1 *outsurf;
	mfxSyncPoint sync;
	mfxBitstream bs = { { { 0 } } };
	int ret;

	if (avpkt->size) {
	bs.Data = avpkt->data;
	bs.DataLength = avpkt->size;
	bs.MaxLength = bs.DataLength;
	bs.TimeStamp = avpkt->pts;
	}

	do {
	ret = get_surface(avctx, q, &insurf);
	if (ret < 0)
	return ret;

	ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
	insurf, &outsurf, &sync);
	if (ret == MFX_WRN_DEVICE_BUSY)
	av_usleep(1);

	} while (ret == MFX_WRN_DEVICE_BUSY \|\| ret == MFX_ERR_MORE_SURFACE);

	if (ret != MFX_ERR_NONE &&
	ret != MFX_ERR_MORE_DATA &&
	ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
	ret != MFX_ERR_MORE_SURFACE) {
	av_log(avctx, AV_LOG_ERROR, "Error during QSV decoding.\n");
	return ff_qsv_error(ret);
	}

	if (sync) {
	AVFrame *src_frame;

	MFXVideoCORE_SyncOperation(q->session, sync, 60000);

	src_frame = find_frame(q, outsurf);
	if (!src_frame) {
	av_log(avctx, AV_LOG_ERROR,
	"The returned surface does not correspond to any frame\n");
	return AVERROR_BUG;
	}

	ret = av_frame_ref(frame, src_frame);
	if (ret < 0)
	return ret;

	frame->pkt_pts = frame->pts = outsurf->Data.TimeStamp;

	frame->repeat_pict =
	outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
	outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
	outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
	frame->top_field_first =
	outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
	frame->interlaced_frame =
	!(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);

	*got_frame = 1;
	}

	return bs.DataOffset;
	}

	int ff_qsv_decode_close(QSVContext *q)
	{
	QSVFrame *cur = q->work_frames;

	while (cur) {
	q->work_frames = cur->next;
	av_frame_free(&cur->frame);
	av_freep(&cur);
	cur = q->work_frames;
	}

	if (q->internal_session)
	MFXClose(q->internal_session);

	return 0;
	}