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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 |
| | | */ |
| | | |
| | | #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 "libavutil/avconfig.h" |
| | | #include "libavutil/attributes.h" |
| | | |
| | | #include "avcodec.h" |
| | | #include "version.h" |
| | | |
| | | 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; |
| | | |
| | | 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); |
| | | |
| | | #if FF_API_VDPAU_PROFILE |
| | | /** |
| | | * Get a decoder profile that should be used for initializing a VDPAU decoder. |
| | | * Should be called from the AVCodecContext.get_format() callback. |
| | | * |
| | | * @deprecated Use av_vdpau_bind_context() instead. |
| | | * |
| | | * @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. |
| | | */ |
| | | attribute_deprecated |
| | | int av_vdpau_get_profile(AVCodecContext *avctx, VdpDecoderProfile *profile); |
| | | #endif |
| | | |
| | | /* @}*/ |
| | | |
| | | #endif /* AVCODEC_VDPAU_H */ |