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/*****************************************************************************
* va.h: Video Acceleration API for avcodec
*****************************************************************************
* Copyright (C) 2009 Laurent Aimar
* $Id$
*
* Authors: Laurent Aimar <fenrir_AT_ videolan _DOT_ org>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "avcommon_compat.h"
#ifndef VLC_AVCODEC_VA_H
#define VLC_AVCODEC_VA_H 1
#include <libavutil/pixdesc.h>
typedef struct vlc_va_t vlc_va_t;
typedef struct vlc_va_sys_t vlc_va_sys_t;
struct vlc_va_t {
VLC_COMMON_MEMBERS
vlc_va_sys_t *sys;
module_t *module;
const char *description;
int (*get)(vlc_va_t *, picture_t *pic, uint8_t **data);
};
/**
* Determines the VLC video chroma value for a pair of hardware acceleration
* PixelFormat and software PixelFormat.
* @param hwfmt the hardware acceleration pixel format
* @param swfmt the software pixel format
* @return a VLC chroma value, or 0 on error.
*/
vlc_fourcc_t vlc_va_GetChroma(enum PixelFormat hwfmt, enum PixelFormat swfmt);
/**
* Creates an accelerated video decoding back-end for libavcodec.
* @param obj parent VLC object
* @param fmt VLC format of the content to decode
* @return a new VLC object on success, NULL on error.
*/
vlc_va_t *vlc_va_New(vlc_object_t *obj, AVCodecContext *, const AVPixFmtDescriptor *,
enum PixelFormat, const es_format_t *fmt,
picture_sys_t *p_sys);
/**
* Allocates a hardware video surface for a libavcodec frame.
* The surface will be used as output for the hardware decoder, and possibly
* also as a reference frame to decode other surfaces.
*
* @param pic pointer to VLC picture being allocated [IN/OUT]
* @param data pointer to the AVFrame data[0] and data[3] pointers [OUT]
*
* @note This function needs not be reentrant.
*
* @return VLC_SUCCESS on success, otherwise an error code.
*/
static inline int vlc_va_Get(vlc_va_t *va, picture_t *pic, uint8_t **data)
{
return va->get(va, pic, data);
}
/**
* Destroys a libavcodec hardware acceleration back-end.
* All allocated surfaces shall have been released beforehand.
*/
void vlc_va_Delete(vlc_va_t *, void **);
#endif
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