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f033481551
The underlying intention of this code is to make changing --videotoolbox-format at runtime work. For this reason, the format can't just be statically setup, but must be read from the option at runtime. This means the format is not fixed anymore, and we have to make sure the renderer is property reinitialized if the format changes. There is currently no way to trigger reinit on this level, which is why the mp_image_params.hw_subfmt field was introduced. One sketchy thing remains: normally, the renderer is supposed to be involved with VO format negotiation, which would ensure that the VO can take the format at all. Since the hw_subfmt is not part of this format negotiation, it's implied the get_vt_fmt() callback only returns formats supported by the renderer. This is not necessarily clear because vo_opengl checks this with converted_imgfmt separately. None of this matters in practice though, because we know all formats are always supported. (This still requires somehow triggering decoder reinit to make the change effective.)
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
#ifndef MP_HWDEC_H_
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#define MP_HWDEC_H_
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#include "options/m_option.h"
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struct mp_image_pool;
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// keep in sync with --hwdec option (see mp_hwdec_names)
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enum hwdec_type {
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HWDEC_AUTO = -1,
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HWDEC_NONE = 0,
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HWDEC_VDPAU = 1,
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HWDEC_VIDEOTOOLBOX = 3,
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HWDEC_VAAPI = 4,
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HWDEC_VAAPI_COPY = 5,
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HWDEC_DXVA2 = 6,
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HWDEC_DXVA2_COPY = 7,
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HWDEC_D3D11VA_COPY = 8,
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HWDEC_RPI = 9,
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HWDEC_MEDIACODEC = 10,
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};
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// hwdec_type names (options.c)
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extern const struct m_opt_choice_alternatives mp_hwdec_names[];
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struct mp_hwdec_ctx {
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enum hwdec_type type;
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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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struct mp_d3d_ctx *d3d_ctx;
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uint32_t (*get_vt_fmt)(struct mp_hwdec_ctx *ctx);
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// Optional.
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// Allocates a software image from the pool, downloads the hw image from
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// mpi, and returns it.
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// pool can be NULL (then just use straight allocation).
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// Return NULL on error or if mpi has the wrong format.
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struct mp_image *(*download_image)(struct mp_hwdec_ctx *ctx,
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struct mp_image *mpi,
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struct mp_image_pool *swpool);
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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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