FFmpeg
hwcontext_internal.h
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2  * This file is part of FFmpeg.
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12  * Lesser General Public License for more details.
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17  */
18 
19 #ifndef AVUTIL_HWCONTEXT_INTERNAL_H
20 #define AVUTIL_HWCONTEXT_INTERNAL_H
21 
22 #include <stddef.h>
23 
24 #include "buffer.h"
25 #include "hwcontext.h"
26 #include "frame.h"
27 #include "pixfmt.h"
28 
29 typedef struct HWContextType {
31  const char *name;
32 
33  /**
34  * An array of pixel formats supported by the AVHWFramesContext instances
35  * Terminated by AV_PIX_FMT_NONE.
36  */
37  const enum AVPixelFormat *pix_fmts;
38 
39  /**
40  * size of the public hardware-specific context,
41  * i.e. AVHWDeviceContext.hwctx
42  */
44  /**
45  * size of the private data, i.e.
46  * AVHWDeviceInternal.priv
47  */
49 
50  /**
51  * Size of the hardware-specific device configuration.
52  * (Used to query hwframe constraints.)
53  */
55 
56  /**
57  * size of the public frame pool hardware-specific context,
58  * i.e. AVHWFramesContext.hwctx
59  */
61  /**
62  * size of the private data, i.e.
63  * AVHWFramesInternal.priv
64  */
66 
67  int (*device_create)(AVHWDeviceContext *ctx, const char *device,
68  AVDictionary *opts, int flags);
70  AVHWDeviceContext *src_ctx,
71  AVDictionary *opts, int flags);
72 
75 
77  const void *hwconfig,
78  AVHWFramesConstraints *constraints);
79 
82 
86  enum AVPixelFormat **formats);
88  const AVFrame *src);
90  const AVFrame *src);
91 
93  const AVFrame *src, int flags);
95  const AVFrame *src, int flags);
96 
98  AVHWFramesContext *src_ctx, int flags);
100  AVHWFramesContext *src_ctx, int flags);
101 } HWContextType;
102 
105  void *priv;
106 
107  /**
108  * For a derived device, a reference to the original device
109  * context it was derived from.
110  */
112 };
113 
116  void *priv;
117 
119 
120  /**
121  * For a derived context, a reference to the original frames
122  * context it was derived from.
123  */
125  /**
126  * Flags to apply to the mapping from the source to the derived
127  * frame context when trying to allocate in the derived context.
128  */
130 };
131 
132 typedef struct HWMapDescriptor {
133  /**
134  * A reference to the original source of the mapping.
135  */
137  /**
138  * A reference to the hardware frames context in which this
139  * mapping was made. May be the same as source->hw_frames_ctx,
140  * but need not be.
141  */
143  /**
144  * Unmap function.
145  */
147  struct HWMapDescriptor *hwmap);
148  /**
149  * Hardware-specific private data associated with the mapping.
150  */
151  void *priv;
153 
154 int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
155  AVFrame *dst, const AVFrame *src,
156  void (*unmap)(AVHWFramesContext *ctx,
157  HWMapDescriptor *hwmap),
158  void *priv);
159 
160 /**
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
163  */
164 int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src);
165 
177 
178 #endif /* AVUTIL_HWCONTEXT_INTERNAL_H */
formats
formats
Definition: signature.h:48
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVHWDeviceInternal::source_device
AVBufferRef * source_device
For a derived device, a reference to the original device context it was derived from.
Definition: hwcontext_internal.h:111
HWContextType::device_uninit
void(* device_uninit)(AVHWDeviceContext *ctx)
Definition: hwcontext_internal.h:74
HWContextType::frames_get_buffer
int(* frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame)
Definition: hwcontext_internal.h:83
HWMapDescriptor::source
AVFrame * source
A reference to the original source of the mapping.
Definition: hwcontext_internal.h:136
AVBufferPool
The buffer pool.
Definition: buffer_internal.h:78
HWContextType::transfer_data_to
int(* transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src)
Definition: hwcontext_internal.h:87
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
ff_hwcontext_type_qsv
const HWContextType ff_hwcontext_type_qsv
Definition: hwcontext_qsv.c:1275
HWContextType::map_to
int(* map_to)(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src, int flags)
Definition: hwcontext_internal.h:92
ff_hwcontext_type_vdpau
const HWContextType ff_hwcontext_type_vdpau
Definition: hwcontext_vdpau.c:507
HWContextType::frames_init
int(* frames_init)(AVHWFramesContext *ctx)
Definition: hwcontext_internal.h:80
ff_hwcontext_type_vaapi
const HWContextType ff_hwcontext_type_vaapi
Definition: hwcontext_vaapi.c:1737
HWContextType::map_from
int(* map_from)(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src, int flags)
Definition: hwcontext_internal.h:94
HWContextType::device_hwconfig_size
size_t device_hwconfig_size
Size of the hardware-specific device configuration.
Definition: hwcontext_internal.h:54
AVDictionary
Definition: dict.c:30
HWMapDescriptor::hw_frames_ctx
AVBufferRef * hw_frames_ctx
A reference to the hardware frames context in which this mapping was made.
Definition: hwcontext_internal.h:142
HWMapDescriptor::priv
void * priv
Hardware-specific private data associated with the mapping.
Definition: hwcontext_internal.h:151
AVHWFramesInternal::source_frames
AVBufferRef * source_frames
For a derived context, a reference to the original frames context it was derived from.
Definition: hwcontext_internal.h:124
AVHWFramesInternal::pool_internal
AVBufferPool * pool_internal
Definition: hwcontext_internal.h:118
AVHWFramesConstraints
This struct describes the constraints on hardware frames attached to a given device with a hardware-s...
Definition: hwcontext.h:453
AVHWFramesInternal::priv
void * priv
Definition: hwcontext_internal.h:116
HWContextType::device_derive
int(* device_derive)(AVHWDeviceContext *dst_ctx, AVHWDeviceContext *src_ctx, AVDictionary *opts, int flags)
Definition: hwcontext_internal.h:69
HWContextType::frames_get_constraints
int(* frames_get_constraints)(AVHWDeviceContext *ctx, const void *hwconfig, AVHWFramesConstraints *constraints)
Definition: hwcontext_internal.h:76
ff_hwcontext_type_mediacodec
const HWContextType ff_hwcontext_type_mediacodec
Definition: hwcontext_mediacodec.c:38
HWContextType::frames_priv_size
size_t frames_priv_size
size of the private data, i.e.
Definition: hwcontext_internal.h:65
AVHWFramesInternal::source_allocation_map_flags
int source_allocation_map_flags
Flags to apply to the mapping from the source to the derived frame context when trying to allocate in...
Definition: hwcontext_internal.h:129
AVHWDeviceContext
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
HWContextType::type
enum AVHWDeviceType type
Definition: hwcontext_internal.h:30
HWContextType::frames_uninit
void(* frames_uninit)(AVHWFramesContext *ctx)
Definition: hwcontext_internal.h:81
ff_hwframe_map_replace
int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src)
Replace the current hwmap of dst with the one from src, used for indirect mappings like VAAPI->(DRM)-...
Definition: hwcontext.c:923
AVHWDeviceType
AVHWDeviceType
Definition: hwcontext.h:27
ctx
AVFormatContext * ctx
Definition: movenc.c:48
HWContextType::device_create
int(* device_create)(AVHWDeviceContext *ctx, const char *device, AVDictionary *opts, int flags)
Definition: hwcontext_internal.h:67
ff_hwcontext_type_videotoolbox
const HWContextType ff_hwcontext_type_videotoolbox
Definition: hwcontext_videotoolbox.c:243
opts
AVDictionary * opts
Definition: movenc.c:50
AVHWDeviceInternal::priv
void * priv
Definition: hwcontext_internal.h:105
HWContextType::transfer_get_formats
int(* transfer_get_formats)(AVHWFramesContext *ctx, enum AVHWFrameTransferDirection dir, enum AVPixelFormat **formats)
Definition: hwcontext_internal.h:84
src
#define src
Definition: vp8dsp.c:255
AVHWFramesInternal
Definition: hwcontext_internal.h:114
ff_hwframe_map_create
int ff_hwframe_map_create(AVBufferRef *hwframe_ref, AVFrame *dst, const AVFrame *src, void(*unmap)(AVHWFramesContext *ctx, HWMapDescriptor *hwmap), void *priv)
Definition: hwcontext.c:737
HWContextType::frames_derive_to
int(* frames_derive_to)(AVHWFramesContext *dst_ctx, AVHWFramesContext *src_ctx, int flags)
Definition: hwcontext_internal.h:97
AVHWFramesInternal::hw_type
const HWContextType * hw_type
Definition: hwcontext_internal.h:115
frame.h
buffer.h
HWContextType::frames_derive_from
int(* frames_derive_from)(AVHWFramesContext *dst_ctx, AVHWFramesContext *src_ctx, int flags)
Definition: hwcontext_internal.h:99
HWContextType::frames_hwctx_size
size_t frames_hwctx_size
size of the public frame pool hardware-specific context, i.e.
Definition: hwcontext_internal.h:60
AVHWDeviceInternal
Definition: hwcontext_internal.h:103
ff_hwcontext_type_vulkan
const HWContextType ff_hwcontext_type_vulkan
Definition: hwcontext_vulkan.c:3617
HWContextType::device_hwctx_size
size_t device_hwctx_size
size of the public hardware-specific context, i.e.
Definition: hwcontext_internal.h:43
ff_hwcontext_type_drm
const HWContextType ff_hwcontext_type_drm
Definition: hwcontext_drm.c:304
HWContextType::name
const char * name
Definition: hwcontext_internal.h:31
HWMapDescriptor::unmap
void(* unmap)(AVHWFramesContext *ctx, struct HWMapDescriptor *hwmap)
Unmap function.
Definition: hwcontext_internal.h:146
AVHWDeviceInternal::hw_type
const HWContextType * hw_type
Definition: hwcontext_internal.h:104
ff_hwcontext_type_d3d11va
const HWContextType ff_hwcontext_type_d3d11va
Definition: hwcontext_d3d11va.c:596
AVHWFrameTransferDirection
AVHWFrameTransferDirection
Definition: hwcontext.h:415
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
pixfmt.h
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
HWContextType::device_init
int(* device_init)(AVHWDeviceContext *ctx)
Definition: hwcontext_internal.h:73
HWContextType::pix_fmts
enum AVPixelFormat * pix_fmts
An array of pixel formats supported by the AVHWFramesContext instances Terminated by AV_PIX_FMT_NONE.
Definition: hwcontext_internal.h:37
HWContextType::device_priv_size
size_t device_priv_size
size of the private data, i.e.
Definition: hwcontext_internal.h:48
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:84
ff_hwcontext_type_cuda
const HWContextType ff_hwcontext_type_cuda
Definition: hwcontext_cuda.c:502
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
hwcontext.h
HWContextType::transfer_data_from
int(* transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src)
Definition: hwcontext_internal.h:89
HWContextType
Definition: hwcontext_internal.h:29
int
int
Definition: ffmpeg_filter.c:156
HWMapDescriptor
Definition: hwcontext_internal.h:132
ff_hwcontext_type_opencl
const HWContextType ff_hwcontext_type_opencl
Definition: hwcontext_opencl.c:2911
ff_hwcontext_type_dxva2
const HWContextType ff_hwcontext_type_dxva2
Definition: hwcontext_dxva2.c:576