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Now that we have identified the device types associated with each hwdec, we can take advantage of this to ensure that get the right hwdec is chosen when decoding frames and there are multiple choices available with different device types. This is also plumbed into the filter initialisation logic, although in practice the decision on the hwdec has already been made at this point - still it's easier than retaining the ambiguous look up logic and worrying that it might lead to an inconsistent result.
111 lines
4.3 KiB
C
111 lines
4.3 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 <libavutil/hwcontext.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 allowed IMGFMT_s, terminated with 0.
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// If NULL, all software formats are considered to be supported.
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const int *supported_formats;
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// HW format used by the hwdec
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int hw_imgfmt;
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// The name of this hwdec's matching conversion filter if available.
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// This will be used for hardware conversion of frame formats.
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// NULL otherwise.
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const char *conversion_filter_name;
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// The libavutil hwconfig to be used when querying constraints for the
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// conversion filter. Can be NULL if no special config is required.
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void *conversion_config;
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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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struct mp_hwdec_ctx *hwdec_devices_get_by_imgfmt_and_type(struct mp_hwdec_devices *devs,
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int hw_imgfmt,
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enum AVHWDeviceType device_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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// Return the n-th device. NULL if none.
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struct mp_hwdec_ctx *hwdec_devices_get_n(struct mp_hwdec_devices *devs, int n);
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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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struct hwdec_imgfmt_request {
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int imgfmt;
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bool probing;
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};
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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, struct hwdec_imgfmt_request *params),
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void *load_api_ctx);
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// Cause VO to lazily load all devices for a specified img format, and will
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// block until this is done (even if not available). Pass IMGFMT_NONE to load
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// all available devices.
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void hwdec_devices_request_for_img_fmt(struct mp_hwdec_devices *devs,
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struct hwdec_imgfmt_request *params);
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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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// 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_cuda;
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extern const struct hwcontext_fns hwcontext_fns_d3d11;
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extern const struct hwcontext_fns hwcontext_fns_drmprime;
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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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