/* * 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 Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_VDPAU_H #define AVCODEC_VDPAU_H /** * @file * @ingroup lavc_codec_hwaccel_vdpau * Public libavcodec VDPAU header. */ /** * @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 Libav * 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. * * @{ */ #include <vdpau/vdpau.h> #include <vdpau/vdpau_x11.h> #include "libavutil/attributes.h" #include "avcodec.h" #include "version.h" #if FF_API_BUFS_VDPAU union AVVDPAUPictureInfo { VdpPictureInfoH264 h264; VdpPictureInfoMPEG1Or2 mpeg; VdpPictureInfoVC1 vc1; VdpPictureInfoMPEG4Part2 mpeg4; }; #endif /** * This structure is used to share data between the libavcodec library and * the client video application. * The user shall zero-allocate the structure 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. * * The size of this structure is not a part of the public ABI and must not * be used outside of libavcodec. Use av_vdpau_alloc_context() to allocate an * AVVDPAUContext. */ typedef struct AVVDPAUContext { /** * VDPAU decoder handle * * Set by user. */ VdpDecoder decoder; /** * VDPAU decoder render callback * * Set by the user. */ VdpDecoderRender *render; #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; /** * Table of bitstream buffers. * The user is responsible for freeing this buffer using av_freep(). * * Set by libavcodec. */ attribute_deprecated VdpBitstreamBuffer *bitstream_buffers; #endif } AVVDPAUContext; /** * Allocate an AVVDPAUContext. * * @return Newly-allocated AVVDPAUContext or NULL on failure. */ AVVDPAUContext *av_vdpau_alloc_context(void); /** * Get a decoder profile that should be used for initializing a VDPAU decoder. * Should be called from the AVCodecContext.get_format() callback. * * @param avctx the codec context being used for decoding the stream * @param profile a pointer into which the result will be written on success. * The contents of profile are undefined if this function returns * an error. * * @return 0 on success (non-negative), a negative AVERROR on failure. */ int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile); #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 /** * @brief This structure is used as a callback between the Libav * 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 Libav decoder and its clients. */ struct vdpau_render_state { VdpVideoSurface surface; ///< Used as rendered surface, never changed. int state; ///< Holds FF_VDPAU_STATE_* values. /** picture parameter information for all supported codecs */ union AVVDPAUPictureInfo info; /** 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; }; #endif /* @}*/ #endif /* AVCODEC_VDPAU_H */