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FFmpeg
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This struct describes a set or pool of "hardware" frames (i.e. More...
#include <hwcontext.h>
Data Fields | |
| const AVClass * | av_class |
| A class for logging. More... | |
| AVHWFramesInternal * | internal |
| Private data used internally by libavutil. More... | |
| AVBufferRef * | device_ref |
| A reference to the parent AVHWDeviceContext. More... | |
| AVHWDeviceContext * | device_ctx |
| The parent AVHWDeviceContext. More... | |
| void * | hwctx |
| The format-specific data, allocated and freed automatically along with this context. More... | |
| void(* | free )(struct AVHWFramesContext *ctx) |
| This field may be set by the caller before calling av_hwframe_ctx_init(). More... | |
| void * | user_opaque |
| Arbitrary user data, to be used e.g. More... | |
| AVBufferPool * | pool |
| A pool from which the frames are allocated by av_hwframe_get_buffer(). More... | |
| int | initial_pool_size |
| Initial size of the frame pool. More... | |
| enum AVPixelFormat | format |
| The pixel format identifying the underlying HW surface type. More... | |
| enum AVPixelFormat | sw_format |
| The pixel format identifying the actual data layout of the hardware frames. More... | |
| int | width |
| The allocated dimensions of the frames in this pool. More... | |
| int | height |
This struct describes a set or pool of "hardware" frames (i.e.
those with data not located in normal system memory). All the frames in the pool are assumed to be allocated in the same way and interchangeable.
This struct is reference-counted with the AVBuffer mechanism and tied to a given AVHWDeviceContext instance. The av_hwframe_ctx_alloc() constructor yields a reference, whose data field points to the actual AVHWFramesContext struct.
Definition at line 123 of file hwcontext.h.
| const AVClass* AVHWFramesContext::av_class |
A class for logging.
Definition at line 127 of file hwcontext.h.
| AVHWFramesInternal* AVHWFramesContext::internal |
Private data used internally by libavutil.
Must not be accessed in any way by the caller.
Definition at line 133 of file hwcontext.h.
Referenced by av_hwframe_ctx_create_derived(), av_hwframe_map(), opencl_frames_init(), opencl_frames_init_command_queue(), opencl_frames_uninit(), opencl_map_frame(), opencl_transfer_data_from(), opencl_transfer_data_to(), opencl_unmap_frame(), qsv_frames_derive_to(), vaapi_frames_init(), vaapi_frames_uninit(), vaapi_map_frame(), and vaapi_pool_alloc().
| AVBufferRef* AVHWFramesContext::device_ref |
A reference to the parent AVHWDeviceContext.
This reference is owned and managed by the enclosing AVHWFramesContext, but the caller may derive additional references from it.
Definition at line 140 of file hwcontext.h.
Referenced by cuvid_decode_init(), ff_nvdec_decode_init(), ff_opencl_filter_config_input(), ff_qsv_init_session_frames(), ff_vaapi_common_frame_params(), hwmap_config_output(), init_out_pool(), init_processing_chain(), init_vpp_session(), and qsv_frame_alloc().
| AVHWDeviceContext* AVHWFramesContext::device_ctx |
The parent AVHWDeviceContext.
This is simply a pointer to device_ref->data provided for convenience.
Set by libavutil in av_hwframe_ctx_init().
Definition at line 148 of file hwcontext.h.
Referenced by amf_init_context(), av_hwframe_ctx_create_derived(), config_output(), config_props(), cudascale_config_props(), cuvid_decode_init(), ff_dxva2_common_frame_params(), ff_dxva2_decode_init(), ff_vaapi_common_frame_params(), ff_vdpau_common_init(), init_out_session(), nppscale_filter_frame(), npptranspose_filter_frame(), nvenc_setup_device(), opencl_frames_derive_to(), opencl_frames_init_command_queue(), opencl_map_to(), opencl_pool_alloc(), qsv_frames_derive_from(), qsv_frames_derive_to(), vaapi_buffer_free(), vaapi_frames_init(), vaapi_map_frame(), vaapi_map_to_memory(), vaapi_pool_alloc(), vaapi_transfer_get_formats(), and vaapi_unmap_frame().
| void* AVHWFramesContext::hwctx |
The format-specific data, allocated and freed automatically along with this context.
Should be cast by the user to the format-specific context defined in the corresponding header (hwframe_*.h) and filled as described in the documentation before calling av_hwframe_ctx_init().
After any frames using this context are created, the contents of this struct should not be modified by the caller.
Definition at line 161 of file hwcontext.h.
Referenced by ff_dxva2_common_frame_params(), ff_dxva2_decode_init(), ff_qsv_enc_init(), ff_qsv_init_session_frames(), ff_vaapi_vpp_config_output(), fill_frameinfo_by_link(), get_format(), init_out_pool(), init_out_session(), init_video_param(), init_video_param_jpeg(), init_vpp_session(), opencl_frames_init_command_queue(), qsv_create_mids(), qsv_decode_init(), qsv_frame_alloc(), qsv_frame_lock(), qsv_frames_derive_from(), qsv_frames_derive_to(), qsv_init(), qsv_init_child_ctx(), qsv_map_to(), qsv_setup_mids(), vaapi_frames_init(), vaapi_frames_uninit(), and vaapi_pool_alloc().
| void(* AVHWFramesContext::free) (struct AVHWFramesContext *ctx) |
This field may be set by the caller before calling av_hwframe_ctx_init().
If non-NULL, this callback will be called when the last reference to this context is unreferenced, immediately before it is freed.
Definition at line 169 of file hwcontext.h.
Referenced by ff_nvdec_frame_params().
| void* AVHWFramesContext::user_opaque |
Arbitrary user data, to be used e.g.
by the free() callback.
Definition at line 174 of file hwcontext.h.
| AVBufferPool* AVHWFramesContext::pool |
A pool from which the frames are allocated by av_hwframe_get_buffer().
This field may be set by the caller before calling av_hwframe_ctx_init(). The buffers returned by calling av_buffer_pool_get() on this pool must have the properties described in the documentation in the corresponding hw type's header (hwcontext_*.h). The pool will be freed strictly before this struct's free() callback is invoked.
This field may be NULL, then libavutil will attempt to allocate a pool internally. Note that certain device types enforce pools allocated at fixed size (frame count), which cannot be extended dynamically. In such a case, initial_pool_size must be set appropriately.
Definition at line 189 of file hwcontext.h.
Referenced by drm_get_buffer(), ff_nvdec_frame_params(), opencl_frames_init(), opencl_get_buffer(), vaapi_frames_init(), and vaapi_get_buffer().
| int AVHWFramesContext::initial_pool_size |
Initial size of the frame pool.
If a device type does not support dynamically resizing the pool, then this is also the maximum pool size.
May be set by the caller before calling av_hwframe_ctx_init(). Must be set if pool is NULL and the device type does not support dynamic pools.
Definition at line 198 of file hwcontext.h.
Referenced by amf_init_context(), avcodec_get_hw_frames_parameters(), config_output(), ff_decode_get_hw_frames_ctx(), ff_dxva2_common_frame_params(), ff_nvdec_decode_init(), ff_nvdec_frame_params(), ff_vaapi_vpp_config_output(), get_format(), hwmap_config_output(), init_out_pool(), init_vpp_session(), qsv_init(), qsv_init_child_ctx(), set_hwframe_ctx(), vaapi_frames_init(), and vaapi_pool_alloc().
| enum AVPixelFormat AVHWFramesContext::format |
The pixel format identifying the underlying HW surface type.
Must be a hwaccel format, i.e. the corresponding descriptor must have the AV_PIX_FMT_FLAG_HWACCEL flag set.
Must be set by the user before calling av_hwframe_ctx_init().
Definition at line 208 of file hwcontext.h.
Referenced by av_hwframe_ctx_create_derived(), av_hwframe_map(), avcodec_open2(), config_output(), cudaupload_config_output(), cuvid_init(), ff_dxva2_common_frame_params(), ff_dxva2_decode_init(), ff_get_format(), ff_nvdec_frame_params(), ff_nvenc_encode_init(), ff_opencl_filter_config_input(), ff_opencl_filter_config_output(), ff_vaapi_vpp_config_output(), ff_vdpau_common_frame_params(), get_format(), hwmap_config_output(), init_out_pool(), init_stage(), init_vpp_session(), nvenc_setup_device(), qsv_init(), qsv_init_child_ctx(), qsv_transfer_data_child(), rkmpp_retrieve_frame(), and set_hwframe_ctx().
| enum AVPixelFormat AVHWFramesContext::sw_format |
The pixel format identifying the actual data layout of the hardware frames.
Must be set by the caller before calling av_hwframe_ctx_init().
Definition at line 221 of file hwcontext.h.
Referenced by amf_init_context(), av_hwframe_ctx_create_derived(), av_hwframe_map(), avcodec_open2(), config_output(), config_props(), cudaupload_config_output(), cuvid_init(), drm_map_from(), ff_dxva2_common_frame_params(), ff_nvdec_frame_params(), ff_nvenc_encode_init(), ff_opencl_filter_config_input(), ff_opencl_filter_config_output(), ff_vaapi_vpp_config_output(), ff_vdpau_common_frame_params(), filter_frame(), get_format(), have_alpha_planar(), hwmap_config_output(), init_out_pool(), init_processing_chain(), init_stage(), init_vpp_session(), nlmeans_opencl_filter_frame(), nppscale_deinterleave(), nppscale_interleave(), nvenc_register_frame(), opencl_map_frame(), opencl_map_from(), opencl_pool_alloc(), opencl_transfer_data_from(), opencl_transfer_data_to(), opencl_transfer_get_formats(), overlay_opencl_blend(), qsv_frame_lock(), qsv_init(), qsv_init_child_ctx(), rkmpp_retrieve_frame(), scalecuda_resize(), set_hwframe_ctx(), thumbnail(), tonemap_opencl_filter_frame(), vaapi_encode_h265_init_sequence_params(), vaapi_encode_mjpeg_init_picture_params(), vaapi_frames_init(), vaapi_map_frame(), vaapi_transfer_get_formats(), and vaapi_vpp_frame_is_rgb().
| int AVHWFramesContext::width |
The allocated dimensions of the frames in this pool.
Must be set by the user before calling av_hwframe_ctx_init().
Definition at line 228 of file hwcontext.h.
Referenced by av_hwframe_ctx_create_derived(), config_output(), cudaupload_config_output(), cuvid_init(), drm_get_buffer(), drm_transfer_data_from(), drm_transfer_data_to(), ff_dxva2_common_frame_params(), ff_nvdec_frame_params(), ff_opencl_filter_config_output(), ff_vaapi_vpp_config_output(), ff_vdpau_common_frame_params(), get_format(), hwmap_config_output(), init_out_pool(), init_stage(), init_vpp_session(), nvenc_register_frame(), opencl_get_buffer(), opencl_pool_alloc(), qsv_frame_lock(), qsv_init(), qsv_init_child_ctx(), rkmpp_retrieve_frame(), set_hwframe_ctx(), vaapi_get_buffer(), vaapi_map_frame(), vaapi_pool_alloc(), vaapi_transfer_data_from(), vaapi_transfer_data_to(), vaapi_unmap_frame(), vt_transfer_data_from(), and vt_transfer_data_to().
| int AVHWFramesContext::height |
Definition at line 228 of file hwcontext.h.
Referenced by av_hwframe_ctx_create_derived(), config_output(), cudaupload_config_output(), cuvid_init(), drm_get_buffer(), drm_transfer_data_from(), drm_transfer_data_to(), ff_dxva2_common_frame_params(), ff_nvdec_frame_params(), ff_opencl_filter_config_output(), ff_vaapi_vpp_config_output(), ff_vdpau_common_frame_params(), get_format(), hwmap_config_output(), init_out_pool(), init_stage(), init_vpp_session(), nvenc_register_frame(), opencl_get_buffer(), opencl_pool_alloc(), qsv_frame_lock(), qsv_init(), qsv_init_child_ctx(), rkmpp_retrieve_frame(), set_hwframe_ctx(), vaapi_get_buffer(), vaapi_map_frame(), vaapi_pool_alloc(), vaapi_transfer_data_from(), vaapi_transfer_data_to(), vaapi_unmap_frame(), vt_transfer_data_from(), and vt_transfer_data_to().
1.8.17