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5efbeae38c
"Fork" is an ambiguous term, since there may be more than one fork, also "fork" could be confused with the corresponding function. Also it seems important to point the name of the referenced fork in the symbol. Note: the old --enable-incompatible-fork-abi command is retained for compatibility, although it should be considered deprecated.
160 lines
4.3 KiB
C
160 lines
4.3 KiB
C
/*
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* The Video Decode and Presentation API for UNIX (VDPAU) is used for
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* hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.
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*
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* Copyright (C) 2008 NVIDIA
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*
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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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#ifndef AVCODEC_VDPAU_H
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#define AVCODEC_VDPAU_H
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/**
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* @file
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* @ingroup lavc_codec_hwaccel_vdpau
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* Public libavcodec VDPAU header.
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*/
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/**
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* @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
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* @ingroup lavc_codec_hwaccel
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*
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* VDPAU hardware acceleration has two modules
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* - VDPAU decoding
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* - VDPAU presentation
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*
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* The VDPAU decoding module parses all headers using FFmpeg
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* parsing mechanisms and uses VDPAU for the actual decoding.
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*
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* As per the current implementation, the actual decoding
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* and rendering (API calls) are done as part of the VDPAU
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* presentation (vo_vdpau.c) module.
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*
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* @{
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*/
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#include <vdpau/vdpau.h>
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#include <vdpau/vdpau_x11.h>
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#include "libavutil/avconfig.h"
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union FFVdpPictureInfo {
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VdpPictureInfoH264 h264;
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VdpPictureInfoMPEG1Or2 mpeg;
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VdpPictureInfoVC1 vc1;
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VdpPictureInfoMPEG4Part2 mpeg4;
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};
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/**
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* This structure is used to share data between the libavcodec library and
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* the client video application.
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* The user shall zero-allocate the structure and make it available as
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* AVCodecContext.hwaccel_context. Members can be set by the user once
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* during initialization or through each AVCodecContext.get_buffer()
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* function call. In any case, they must be valid prior to calling
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* decoding functions.
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*/
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typedef struct AVVDPAUContext {
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/**
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* VDPAU decoder handle
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*
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* Set by user.
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*/
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VdpDecoder decoder;
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/**
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* VDPAU decoder render callback
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*
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* Set by the user.
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*/
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VdpDecoderRender *render;
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/**
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* VDPAU picture information
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*
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* Set by libavcodec.
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*/
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union FFVdpPictureInfo info;
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/**
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* Allocated size of the bitstream_buffers table.
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*
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* Set by libavcodec.
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*/
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int bitstream_buffers_allocated;
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/**
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* Useful bitstream buffers in the bitstream buffers table.
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*
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* Set by libavcodec.
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*/
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int bitstream_buffers_used;
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/**
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* Table of bitstream buffers.
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* The user is responsible for freeing this buffer using av_freep().
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*
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* Set by libavcodec.
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*/
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VdpBitstreamBuffer *bitstream_buffers;
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} AVVDPAUContext;
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/** @brief The videoSurface is used for rendering. */
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#define FF_VDPAU_STATE_USED_FOR_RENDER 1
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/**
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* @brief The videoSurface is needed for reference/prediction.
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* The codec manipulates this.
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*/
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#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
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/**
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* @brief This structure is used as a callback between the FFmpeg
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* decoder (vd_) and presentation (vo_) module.
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* This is used for defining a video frame containing surface,
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* picture parameter, bitstream information etc which are passed
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* between the FFmpeg decoder and its clients.
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*/
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struct vdpau_render_state {
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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
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/** picture parameter information for all supported codecs */
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union FFVdpPictureInfo info;
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#endif
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/** Describe size/location of the compressed video data.
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Set to 0 when freeing bitstream_buffers. */
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int bitstream_buffers_allocated;
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int bitstream_buffers_used;
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/** The user is responsible for freeing this buffer using av_freep(). */
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VdpBitstreamBuffer *bitstream_buffers;
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#if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI
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/** picture parameter information for all supported codecs */
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union FFVdpPictureInfo info;
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#endif
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};
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/* @}*/
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#endif /* AVCODEC_VDPAU_H */
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