2 * This file is part of Libav.
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVUTIL_HWCONTEXT_INTERNAL_H
20 #define AVUTIL_HWCONTEXT_INTERNAL_H
25 #include "hwcontext.h"
29 typedef struct HWContextType {
30 enum AVHWDeviceType type;
34 * An array of pixel formats supported by the AVHWFramesContext instances
35 * Terminated by AV_PIX_FMT_NONE.
37 const enum AVPixelFormat *pix_fmts;
40 * size of the public hardware-specific context,
41 * i.e. AVHWDeviceContext.hwctx
43 size_t device_hwctx_size;
45 * size of the private data, i.e.
46 * AVHWDeviceInternal.priv
48 size_t device_priv_size;
51 * Size of the hardware-specific device configuration.
52 * (Used to query hwframe constraints.)
54 size_t device_hwconfig_size;
57 * size of the public frame pool hardware-specific context,
58 * i.e. AVHWFramesContext.hwctx
60 size_t frames_hwctx_size;
62 * size of the private data, i.e.
63 * AVHWFramesInternal.priv
65 size_t frames_priv_size;
67 int (*device_create)(AVHWDeviceContext *ctx, const char *device,
68 AVDictionary *opts, int flags);
70 int (*device_init)(AVHWDeviceContext *ctx);
71 void (*device_uninit)(AVHWDeviceContext *ctx);
73 int (*frames_get_constraints)(AVHWDeviceContext *ctx,
75 AVHWFramesConstraints *constraints);
77 int (*frames_init)(AVHWFramesContext *ctx);
78 void (*frames_uninit)(AVHWFramesContext *ctx);
80 int (*frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame);
81 int (*transfer_get_formats)(AVHWFramesContext *ctx,
82 enum AVHWFrameTransferDirection dir,
83 enum AVPixelFormat **formats);
84 int (*transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst,
86 int (*transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst,
89 int (*map_to)(AVHWFramesContext *ctx, AVFrame *dst,
90 const AVFrame *src, int flags);
91 int (*map_from)(AVHWFramesContext *ctx, AVFrame *dst,
92 const AVFrame *src, int flags);
95 struct AVHWDeviceInternal {
96 const HWContextType *hw_type;
100 struct AVHWFramesInternal {
101 const HWContextType *hw_type;
104 AVBufferPool *pool_internal;
107 * For a derived context, a reference to the original frames
108 * context it was derived from.
110 AVBufferRef *source_frames;
113 typedef struct HWMapDescriptor {
115 * A reference to the original source of the mapping.
119 * A reference to the hardware frames context in which this
120 * mapping was made. May be the same as source->hw_frames_ctx,
123 AVBufferRef *hw_frames_ctx;
127 void (*unmap)(AVHWFramesContext *ctx,
128 struct HWMapDescriptor *hwmap);
130 * Hardware-specific private data associated with the mapping.
135 int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
136 AVFrame *dst, const AVFrame *src,
137 void (*unmap)(AVHWFramesContext *ctx,
138 HWMapDescriptor *hwmap),
142 extern const HWContextType ff_hwcontext_type_cuda;
143 extern const HWContextType ff_hwcontext_type_dxva2;
144 extern const HWContextType ff_hwcontext_type_qsv;
145 extern const HWContextType ff_hwcontext_type_vaapi;
146 extern const HWContextType ff_hwcontext_type_vdpau;
148 #endif /* AVUTIL_HWCONTEXT_INTERNAL_H */