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aae9af348e
Before this commit, each hw backend had their own specific struct types for context, and some, like VDA, had none at all. Add a context struct (mp_hwdec_ctx) that provides a somewhat generic way to pass the hwdec context around. Some things get slightly better, some slightly more verbose. mp_hwdec_info is still around; it's still needed, but is reduced to its role of handling delayed loading of the hwdec backend.
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
#ifndef MP_HWDEC_H_
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#define MP_HWDEC_H_
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struct mp_image_pool;
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struct mp_hwdec_ctx {
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void *priv; // for free use by hwdec implementation
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// API-specific, not needed by all backends.
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struct mp_vdpau_ctx *vdpau_ctx;
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struct mp_vaapi_ctx *vaapi_ctx;
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};
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// Used to communicate hardware decoder API handles from VO to video decoder.
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// The VO can set the context pointer for supported APIs.
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struct mp_hwdec_info {
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// (Since currently only 1 hwdec API is loaded at a time, this pointer
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// simply maps to the loaded one.)
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struct mp_hwdec_ctx *hwctx;
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// Can be used to lazily load a requested API.
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// api_name is e.g. "vdpau" (like the fields above, without "_ctx")
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// Can be NULL, is idempotent, caller checks hwctx fields for success/access.
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// Due to threading, the callback is the only code that is allowed to
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// change fields in this struct after initialization.
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void (*load_api)(struct mp_hwdec_info *info, const char *api_name);
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void *load_api_ctx;
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};
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// Trivial helper to call info->load_api().
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// Implemented in vd_lavc.c.
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void hwdec_request_api(struct mp_hwdec_info *info, const char *api_name);
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#endif
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