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/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_HWCONTEXT_INTERNAL_H
#define AVUTIL_HWCONTEXT_INTERNAL_H
#include <stddef.h>
#include "buffer.h"
#include "hwcontext.h"
#include "frame.h"
#include "pixfmt.h"
typedef struct HWContextType {
enum AVHWDeviceType type;
const char *name;
/**
* An array of pixel formats supported by the AVHWFramesContext instances
* Terminated by AV_PIX_FMT_NONE.
*/
const enum AVPixelFormat *pix_fmts;
/**
* size of the public hardware-specific context,
* i.e. AVHWDeviceContext.hwctx
*/
size_t device_hwctx_size;
/**
* size of the private data, i.e.
* AVHWDeviceInternal.priv
*/
size_t device_priv_size;
/**
* Size of the hardware-specific device configuration.
* (Used to query hwframe constraints.)
*/
size_t device_hwconfig_size;
/**
* size of the public frame pool hardware-specific context,
* i.e. AVHWFramesContext.hwctx
*/
size_t frames_hwctx_size;
/**
* size of the private data, i.e.
* AVHWFramesInternal.priv
*/
size_t frames_priv_size;
int (*device_create)(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags);
int (*device_derive)(AVHWDeviceContext *dst_ctx,
AVHWDeviceContext *src_ctx, int flags);
int (*device_init)(AVHWDeviceContext *ctx);
void (*device_uninit)(AVHWDeviceContext *ctx);
int (*frames_get_constraints)(AVHWDeviceContext *ctx,
const void *hwconfig,
AVHWFramesConstraints *constraints);
int (*frames_init)(AVHWFramesContext *ctx);
void (*frames_uninit)(AVHWFramesContext *ctx);
int (*frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame);
int (*transfer_get_formats)(AVHWFramesContext *ctx,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats);
int (*transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src);
int (*transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src);
int (*map_to)(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src, int flags);
int (*map_from)(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src, int flags);
int (*frames_derive_to)(AVHWFramesContext *dst_ctx,
AVHWFramesContext *src_ctx, int flags);
int (*frames_derive_from)(AVHWFramesContext *dst_ctx,
AVHWFramesContext *src_ctx, int flags);
} HWContextType;
struct AVHWDeviceInternal {
const HWContextType *hw_type;
void *priv;
/**
* For a derived device, a reference to the original device
* context it was derived from.
*/
AVBufferRef *source_device;
};
struct AVHWFramesInternal {
const HWContextType *hw_type;
void *priv;
AVBufferPool *pool_internal;
/**
* For a derived context, a reference to the original frames
* context it was derived from.
*/
AVBufferRef *source_frames;
};
typedef struct HWMapDescriptor {
/**
* A reference to the original source of the mapping.
*/
AVFrame *source;
/**
* A reference to the hardware frames context in which this
* mapping was made. May be the same as source->hw_frames_ctx,
* but need not be.
*/
AVBufferRef *hw_frames_ctx;
/**
* Unmap function.
*/
void (*unmap)(AVHWFramesContext *ctx,
struct HWMapDescriptor *hwmap);
/**
* Hardware-specific private data associated with the mapping.
*/
void *priv;
} HWMapDescriptor;
int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
AVFrame *dst, const AVFrame *src,
void (*unmap)(AVHWFramesContext *ctx,
HWMapDescriptor *hwmap),
void *priv);
extern const HWContextType ff_hwcontext_type_cuda;
extern const HWContextType ff_hwcontext_type_dxva2;
extern const HWContextType ff_hwcontext_type_qsv;
extern const HWContextType ff_hwcontext_type_vaapi;
extern const HWContextType ff_hwcontext_type_vdpau;
#endif /* AVUTIL_HWCONTEXT_INTERNAL_H */
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