mirror of https://github.com/mpv-player/mpv
96 lines
3.9 KiB
C
96 lines
3.9 KiB
C
#ifndef MP_HWDEC_H_
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#define MP_HWDEC_H_
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#include <libavutil/buffer.h>
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#include "options/m_option.h"
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struct mp_image_pool;
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struct mp_hwdec_ctx {
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const char *driver_name; // NULL if unknown/not loaded
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// libavutil-wrapped context, if available.
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struct AVBufferRef *av_device_ref; // AVHWDeviceContext*
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// List of IMGFMT_s, terminated with 0. NULL if N/A.
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int *supported_formats;
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};
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// Used to communicate hardware decoder device handles from VO to video decoder.
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struct mp_hwdec_devices;
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struct mp_hwdec_devices *hwdec_devices_create(void);
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void hwdec_devices_destroy(struct mp_hwdec_devices *devs);
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// Return the device context for the given API type. Returns NULL if none
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// available. Logically, the returned pointer remains valid until VO
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// uninitialization is started (all users of it must be uninitialized before).
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// hwdec_devices_request() may be used before this to lazily load devices.
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// Contains a wrapped AVHWDeviceContext.
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// Beware that this creates a _new_ reference.
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struct AVBufferRef *hwdec_devices_get_lavc(struct mp_hwdec_devices *devs,
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int av_hwdevice_type);
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// For code which still strictly assumes there is 1 (or none) device.
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struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs);
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// Add this to the list of internal devices. Adding the same pointer twice must
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// be avoided.
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void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
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// Remove this from the list of internal devices. Idempotent/ignores entries
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// not added yet. This is not thread-safe.
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void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
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// Can be used to enable lazy loading of an API with hwdec_devices_request().
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// If used at all, this must be set/unset during initialization/uninitialization,
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// as concurrent use with hwdec_devices_request() is a race condition.
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void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
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void (*load_api)(void *ctx), void *load_api_ctx);
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// Cause VO to lazily load all devices, and will block until this is done (even
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// if not available).
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void hwdec_devices_request_all(struct mp_hwdec_devices *devs);
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// Return "," concatenated list (for introspection/debugging). Use talloc_free().
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char *hwdec_devices_get_names(struct mp_hwdec_devices *devs);
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struct mp_image;
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struct mpv_global;
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struct hwcontext_create_dev_params {
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bool probing; // if true, don't log errors if unavailable
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};
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// Per AV_HWDEVICE_TYPE_* functions, queryable via hwdec_get_hwcontext_fns().
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// All entries are strictly optional.
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struct hwcontext_fns {
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int av_hwdevice_type;
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// Set any mp_image fields that require hwcontext specific code, such as
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// fields or flags not present in AVFrame or AVHWFramesContext in a
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// portable way. This is called directly after img is converted from an
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// AVFrame, with all other fields already set. img.hwctx will be set, and
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// use the correct AV_HWDEVICE_TYPE_.
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void (*complete_image_params)(struct mp_image *img);
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// Fill in special format-specific requirements.
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void (*refine_hwframes)(struct AVBufferRef *hw_frames_ctx);
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// Returns a AVHWDeviceContext*. Used for copy hwdecs.
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struct AVBufferRef *(*create_dev)(struct mpv_global *global,
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struct mp_log *log,
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struct hwcontext_create_dev_params *params);
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// Return whether this is using some sort of sub-optimal emulation layer.
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bool (*is_emulated)(struct AVBufferRef *hw_device_ctx);
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};
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// The parameter is of type enum AVHWDeviceType (as in int to avoid extensive
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// recursive includes). May return NULL for unknown device types.
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const struct hwcontext_fns *hwdec_get_hwcontext_fns(int av_hwdevice_type);
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extern const struct hwcontext_fns hwcontext_fns_d3d11;
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extern const struct hwcontext_fns hwcontext_fns_dxva2;
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extern const struct hwcontext_fns hwcontext_fns_vaapi;
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extern const struct hwcontext_fns hwcontext_fns_vdpau;
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#endif
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