Edit File: vdpau.h
/* * 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 */ #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 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. * * @{ */ #include <vdpau/vdpau.h> #include <vdpau/vdpau_x11.h> #include "libavutil/avconfig.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 struct AVCodecContext; struct AVFrame; typedef int (*AVVDPAU_Render2)(struct AVCodecContext *, struct AVFrame *, const VdpPictureInfo *, uint32_t, const VdpBitstreamBuffer *); /** * 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. * * 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 AVVDPAU_Render2 render2; } AVVDPAUContext; /** * @brief allocation function for AVVDPAUContext * * Allows extending the struct without breaking API/ABI */ AVVDPAUContext *av_alloc_vdpaucontext(void); AVVDPAU_Render2 av_vdpau_hwaccel_get_render2(const AVVDPAUContext *); void av_vdpau_hwaccel_set_render2(AVVDPAUContext *, AVVDPAU_Render2); /** * Associate a VDPAU device with a codec context for hardware acceleration. * This function is meant to be called from the get_format() codec callback, * or earlier. It can also be called after avcodec_flush_buffers() to change * the underlying VDPAU device mid-stream (e.g. to recover from non-transparent * display preemption). * * @note get_format() must return AV_PIX_FMT_VDPAU if this function completes * successfully. * * @param avctx decoding context whose get_format() callback is invoked * @param device VDPAU device handle to use for hardware acceleration * @param get_proc_address VDPAU device driver * @param flags zero of more OR'd AV_HWACCEL_FLAG_* flags * * @return 0 on success, an AVERROR code on failure. */ int av_vdpau_bind_context(AVCodecContext *avctx, VdpDevice device, VdpGetProcAddress *get_proc_address, unsigned flags); /** * Gets the parameters to create an adequate VDPAU video surface for the codec * context using VDPAU hardware decoding acceleration. * * @note Behavior is undefined if the context was not successfully bound to a * VDPAU device using av_vdpau_bind_context(). * * @param avctx the codec context being used for decoding the stream * @param type storage space for the VDPAU video surface chroma type * (or NULL to ignore) * @param width storage space for the VDPAU video surface pixel width * (or NULL to ignore) * @param height storage space for the VDPAU video surface pixel height * (or NULL to ignore) * * @return 0 on success, a negative AVERROR code on failure. */ int av_vdpau_get_surface_parameters(AVCodecContext *avctx, VdpChromaType *type, uint32_t *width, uint32_t *height); /** * 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 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. int state; ///< Holds FF_VDPAU_STATE_* values. #if AV_HAVE_INCOMPATIBLE_LIBAV_ABI /** picture parameter information for all supported codecs */ union AVVDPAUPictureInfo info; #endif /** 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; #if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI /** picture parameter information for all supported codecs */ union AVVDPAUPictureInfo info; #endif }; #endif /* @}*/ #endif /* AVCODEC_VDPAU_H */