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/* |
* The Video Decode and Presentation API for UNIX (VDPAU) is used for |
* hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1. |
* |
* Copyright (C) 2008 NVIDIA |
* |
* 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 |
*/ |
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#ifndef AVCODEC_VDPAU_H |
#define AVCODEC_VDPAU_H |
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/** |
* @file |
* @ingroup lavc_codec_hwaccel_vdpau |
* Public libavcodec VDPAU header. |
*/ |
|
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/** |
* @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer |
* @ingroup lavc_codec_hwaccel |
* |
* VDPAU hardware acceleration has two modules |
* - VDPAU decoding |
* - VDPAU presentation |
* |
* The VDPAU decoding module parses all headers using FFmpeg |
* parsing mechanisms and uses VDPAU for the actual decoding. |
* |
* As per the current implementation, the actual decoding |
* and rendering (API calls) are done as part of the VDPAU |
* presentation (vo_vdpau.c) module. |
* |
* @{ |
*/ |
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#include <vdpau/vdpau.h> |
#include <vdpau/vdpau_x11.h> |
#include "libavutil/avconfig.h" |
#include "libavutil/attributes.h" |
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#ifndef FF_API_CAP_VDPAU |
#define FF_API_CAP_VDPAU 1 |
#endif |
#ifndef FF_API_BUFS_VDPAU |
#define FF_API_BUFS_VDPAU 1 |
#endif |
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#if FF_API_BUFS_VDPAU |
union AVVDPAUPictureInfo { |
VdpPictureInfoH264 h264; |
VdpPictureInfoMPEG1Or2 mpeg; |
VdpPictureInfoVC1 vc1; |
VdpPictureInfoMPEG4Part2 mpeg4; |
}; |
#endif |
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struct AVCodecContext; |
struct AVFrame; |
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typedef int (*AVVDPAU_Render2)(struct AVCodecContext *, struct AVFrame *, |
const VdpPictureInfo *, uint32_t, |
const VdpBitstreamBuffer *); |
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/** |
* This structure is used to share data between the libavcodec library and |
* the client video application. |
* The user shall allocate the structure via the av_alloc_vdpau_hwaccel |
* function and make it available as |
* AVCodecContext.hwaccel_context. Members can be set by the user once |
* during initialization or through each AVCodecContext.get_buffer() |
* function call. In any case, they must be valid prior to calling |
* decoding functions. |
*/ |
typedef struct AVVDPAUContext { |
/** |
* VDPAU decoder handle |
* |
* Set by user. |
*/ |
VdpDecoder decoder; |
|
/** |
* VDPAU decoder render callback |
* |
* Set by the user. |
*/ |
VdpDecoderRender *render; |
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#if FF_API_BUFS_VDPAU |
/** |
* VDPAU picture information |
* |
* Set by libavcodec. |
*/ |
attribute_deprecated |
union AVVDPAUPictureInfo info; |
|
/** |
* Allocated size of the bitstream_buffers table. |
* |
* Set by libavcodec. |
*/ |
attribute_deprecated |
int bitstream_buffers_allocated; |
|
/** |
* Useful bitstream buffers in the bitstream buffers table. |
* |
* Set by libavcodec. |
*/ |
attribute_deprecated |
int bitstream_buffers_used; |
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/** |
* Table of bitstream buffers. |
* The user is responsible for freeing this buffer using av_freep(). |
* |
* Set by libavcodec. |
*/ |
attribute_deprecated |
VdpBitstreamBuffer *bitstream_buffers; |
#endif |
AVVDPAU_Render2 render2; |
} AVVDPAUContext; |
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/** |
* @brief allocation function for AVVDPAUContext |
* |
* Allows extending the struct without breaking API/ABI |
*/ |
AVVDPAUContext *av_alloc_vdpaucontext(void); |
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AVVDPAU_Render2 av_vdpau_hwaccel_get_render2(const AVVDPAUContext *); |
void av_vdpau_hwaccel_set_render2(AVVDPAUContext *, AVVDPAU_Render2); |
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#if FF_API_CAP_VDPAU |
/** @brief The videoSurface is used for rendering. */ |
#define FF_VDPAU_STATE_USED_FOR_RENDER 1 |
|
/** |
* @brief The videoSurface is needed for reference/prediction. |
* The codec manipulates this. |
*/ |
#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2 |
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/** |
* @brief This structure is used as a callback between the FFmpeg |
* decoder (vd_) and presentation (vo_) module. |
* This is used for defining a video frame containing surface, |
* picture parameter, bitstream information etc which are passed |
* between the FFmpeg decoder and its clients. |
*/ |
struct vdpau_render_state { |
VdpVideoSurface surface; ///< Used as rendered surface, never changed. |
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int state; ///< Holds FF_VDPAU_STATE_* values. |
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#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI |
/** picture parameter information for all supported codecs */ |
union AVVDPAUPictureInfo info; |
#endif |
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/** Describe size/location of the compressed video data. |
Set to 0 when freeing bitstream_buffers. */ |
int bitstream_buffers_allocated; |
int bitstream_buffers_used; |
/** The user is responsible for freeing this buffer using av_freep(). */ |
VdpBitstreamBuffer *bitstream_buffers; |
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#if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI |
/** picture parameter information for all supported codecs */ |
union AVVDPAUPictureInfo info; |
#endif |
}; |
#endif |
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/* @}*/ |
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#endif /* AVCODEC_VDPAU_H */ |