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91 lines
3.2 KiB
91 lines
3.2 KiB
/*****************************************************************************
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* va.h: Video Acceleration API for avcodec
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*****************************************************************************
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* Copyright (C) 2009 Laurent Aimar
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*
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* Authors: Laurent Aimar <fenrir_AT_ videolan _DOT_ org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_AVCODEC_VA_H
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#define VLC_AVCODEC_VA_H 1
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#include "avcommon_compat.h"
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typedef struct vlc_va_t vlc_va_t;
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typedef struct vlc_va_sys_t vlc_va_sys_t;
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struct vlc_va_operations {
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int (*get)(vlc_va_t *, picture_t *pic, uint8_t **surface);
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void (*close)(vlc_va_t *, void **hwctx);
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};
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struct vlc_va_t {
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struct vlc_object_t obj;
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vlc_va_sys_t *sys;
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const struct vlc_va_operations *ops;
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};
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/**
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* Determines the VLC video chroma value for a pair of hardware acceleration
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* PixelFormat and software PixelFormat.
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* @param hwfmt the hardware acceleration pixel format
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* @param swfmt the software pixel format
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* @return a VLC chroma value, or 0 on error.
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*/
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vlc_fourcc_t vlc_va_GetChroma(enum PixelFormat hwfmt, enum PixelFormat swfmt);
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/**
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* Creates an accelerated video decoding back-end for libavcodec.
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* @param obj parent VLC object
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* @param fmt VLC format of the content to decode
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* @return a new VLC object on success, NULL on error.
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*/
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vlc_va_t *vlc_va_New(vlc_object_t *obj, AVCodecContext *,
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enum PixelFormat, const es_format_t *fmt,
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void *p_sys);
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/**
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* Get a hardware video surface for a libavcodec frame.
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* The surface will be used as output for the hardware decoder, and possibly
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* also as a reference frame to decode other surfaces.
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*
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* The type of the surface depends on the hardware pixel format:
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* AV_PIX_FMT_D3D11VA_VLD - ID3D11VideoDecoderOutputView*
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* AV_PIX_FMT_DXVA2_VLD - IDirect3DSurface9*
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* AV_PIX_FMT_VDPAU - VdpVideoSurface
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* AV_PIX_FMT_VAAPI_VLD - VASurfaceID
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*
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* @param pic pointer to VLC picture containing the surface [IN/OUT]
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* @param surface pointer to the AVFrame data[0] and data[3] pointers [OUT]
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*
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* @note This function needs not be reentrant.
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*
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* @return VLC_SUCCESS on success, otherwise an error code.
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*/
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static inline int vlc_va_Get(vlc_va_t *va, picture_t *pic, uint8_t **surface)
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{
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return va->ops->get(va, pic, surface);
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}
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/**
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* Destroys a libavcodec hardware acceleration back-end.
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* All allocated surfaces shall have been released beforehand.
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*/
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void vlc_va_Delete(vlc_va_t *, void **);
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#endif
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