mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-12-11 06:04:06 +00:00
177 lines
5.7 KiB
C
177 lines
5.7 KiB
C
/*
|
|
* 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 */
|