mirror of
https://git.ffmpeg.org/ffmpeg.git
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532b23f079
This adds tons of code for no other benefit than making VideoToolbox support conform with the new hwaccel API (using hw_device_ctx and hw_frames_ctx). Since VideoToolbox decoding does not actually require the user to allocate frames, the new code does mostly nothing. One benefit is that ffmpeg_videotoolbox.c can be dropped once generic hwaccel support for ffmpeg.c is merged from Libav. Does not consider VDA or VideoToolbox encoding. Fun fact: the frame transfer functions are copied from vaapi, as the mapping makes copying generic boilerplate. Mapping itself is not exported by the VT code, because I don't know how to test.
150 lines
4.9 KiB
C
150 lines
4.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* 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
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_HWCONTEXT_INTERNAL_H
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#define AVUTIL_HWCONTEXT_INTERNAL_H
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#include <stddef.h>
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#include "buffer.h"
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#include "hwcontext.h"
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#include "frame.h"
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#include "pixfmt.h"
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typedef struct HWContextType {
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enum AVHWDeviceType type;
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const char *name;
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/**
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* An array of pixel formats supported by the AVHWFramesContext instances
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* Terminated by AV_PIX_FMT_NONE.
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*/
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const enum AVPixelFormat *pix_fmts;
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/**
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* size of the public hardware-specific context,
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* i.e. AVHWDeviceContext.hwctx
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*/
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size_t device_hwctx_size;
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/**
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* size of the private data, i.e.
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* AVHWDeviceInternal.priv
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*/
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size_t device_priv_size;
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/**
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* Size of the hardware-specific device configuration.
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* (Used to query hwframe constraints.)
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*/
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size_t device_hwconfig_size;
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/**
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* size of the public frame pool hardware-specific context,
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* i.e. AVHWFramesContext.hwctx
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*/
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size_t frames_hwctx_size;
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/**
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* size of the private data, i.e.
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* AVHWFramesInternal.priv
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*/
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size_t frames_priv_size;
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int (*device_create)(AVHWDeviceContext *ctx, const char *device,
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AVDictionary *opts, int flags);
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int (*device_init)(AVHWDeviceContext *ctx);
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void (*device_uninit)(AVHWDeviceContext *ctx);
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int (*frames_get_constraints)(AVHWDeviceContext *ctx,
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const void *hwconfig,
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AVHWFramesConstraints *constraints);
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int (*frames_init)(AVHWFramesContext *ctx);
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void (*frames_uninit)(AVHWFramesContext *ctx);
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int (*frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame);
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int (*transfer_get_formats)(AVHWFramesContext *ctx,
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enum AVHWFrameTransferDirection dir,
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enum AVPixelFormat **formats);
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int (*transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src);
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int (*transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src);
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int (*map_to)(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src, int flags);
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int (*map_from)(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src, int flags);
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} HWContextType;
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struct AVHWDeviceInternal {
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const HWContextType *hw_type;
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void *priv;
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};
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struct AVHWFramesInternal {
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const HWContextType *hw_type;
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void *priv;
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AVBufferPool *pool_internal;
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/**
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* For a derived context, a reference to the original frames
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* context it was derived from.
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*/
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AVBufferRef *source_frames;
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};
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typedef struct HWMapDescriptor {
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/**
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* A reference to the original source of the mapping.
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*/
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AVFrame *source;
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/**
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* A reference to the hardware frames context in which this
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* mapping was made. May be the same as source->hw_frames_ctx,
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* but need not be.
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*/
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AVBufferRef *hw_frames_ctx;
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/**
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* Unmap function.
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*/
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void (*unmap)(AVHWFramesContext *ctx,
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struct HWMapDescriptor *hwmap);
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/**
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* Hardware-specific private data associated with the mapping.
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*/
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void *priv;
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} HWMapDescriptor;
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int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
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AVFrame *dst, const AVFrame *src,
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void (*unmap)(AVHWFramesContext *ctx,
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HWMapDescriptor *hwmap),
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void *priv);
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extern const HWContextType ff_hwcontext_type_cuda;
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extern const HWContextType ff_hwcontext_type_dxva2;
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extern const HWContextType ff_hwcontext_type_qsv;
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extern const HWContextType ff_hwcontext_type_vaapi;
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extern const HWContextType ff_hwcontext_type_vdpau;
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extern const HWContextType ff_hwcontext_type_videotoolbox;
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#endif /* AVUTIL_HWCONTEXT_INTERNAL_H */
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