2 * This file is part of FFmpeg.
4 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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);
69 int (*device_derive)(AVHWDeviceContext *dst_ctx,
70 AVHWDeviceContext *src_ctx,
71 AVDictionary *opts, int flags);
73 int (*device_init)(AVHWDeviceContext *ctx);
74 void (*device_uninit)(AVHWDeviceContext *ctx);
76 int (*frames_get_constraints)(AVHWDeviceContext *ctx,
78 AVHWFramesConstraints *constraints);
80 int (*frames_init)(AVHWFramesContext *ctx);
81 void (*frames_uninit)(AVHWFramesContext *ctx);
83 int (*frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame);
84 int (*transfer_get_formats)(AVHWFramesContext *ctx,
85 enum AVHWFrameTransferDirection dir,
86 enum AVPixelFormat **formats);
87 int (*transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst,
89 int (*transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst,
92 int (*map_to)(AVHWFramesContext *ctx, AVFrame *dst,
93 const AVFrame *src, int flags);
94 int (*map_from)(AVHWFramesContext *ctx, AVFrame *dst,
95 const AVFrame *src, int flags);
97 int (*frames_derive_to)(AVHWFramesContext *dst_ctx,
98 AVHWFramesContext *src_ctx, int flags);
99 int (*frames_derive_from)(AVHWFramesContext *dst_ctx,
100 AVHWFramesContext *src_ctx, int flags);
103 struct AVHWDeviceInternal {
104 const HWContextType *hw_type;
108 * For a derived device, a reference to the original device
109 * context it was derived from.
111 AVBufferRef *source_device;
114 struct AVHWFramesInternal {
115 const HWContextType *hw_type;
118 AVBufferPool *pool_internal;
121 * For a derived context, a reference to the original frames
122 * context it was derived from.
124 AVBufferRef *source_frames;
126 * Flags to apply to the mapping from the source to the derived
127 * frame context when trying to allocate in the derived context.
129 int source_allocation_map_flags;
132 typedef struct HWMapDescriptor {
134 * A reference to the original source of the mapping.
138 * A reference to the hardware frames context in which this
139 * mapping was made. May be the same as source->hw_frames_ctx,
142 AVBufferRef *hw_frames_ctx;
146 void (*unmap)(AVHWFramesContext *ctx,
147 struct HWMapDescriptor *hwmap);
149 * Hardware-specific private data associated with the mapping.
154 int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
155 AVFrame *dst, const AVFrame *src,
156 void (*unmap)(AVHWFramesContext *ctx,
157 HWMapDescriptor *hwmap),
161 * Replace the current hwmap of dst with the one from src, used for indirect
162 * mappings like VAAPI->(DRM)->OpenCL/Vulkan where a direct interop is missing
164 int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src);
166 extern const HWContextType ff_hwcontext_type_cuda;
167 extern const HWContextType ff_hwcontext_type_d3d11va;
168 extern const HWContextType ff_hwcontext_type_drm;
169 extern const HWContextType ff_hwcontext_type_dxva2;
170 extern const HWContextType ff_hwcontext_type_opencl;
171 extern const HWContextType ff_hwcontext_type_qsv;
172 extern const HWContextType ff_hwcontext_type_vaapi;
173 extern const HWContextType ff_hwcontext_type_vdpau;
174 extern const HWContextType ff_hwcontext_type_videotoolbox;
175 extern const HWContextType ff_hwcontext_type_mediacodec;
176 extern const HWContextType ff_hwcontext_type_vulkan;
178 #endif /* AVUTIL_HWCONTEXT_INTERNAL_H */