mirror of https://github.com/mpv-player/mpv
101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
#ifndef MPGL_HWDEC_H_
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#define MPGL_HWDEC_H_
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#include "common.h"
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#include "video/hwdec.h"
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struct gl_hwdec {
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const struct gl_hwdec_driver *driver;
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struct mp_log *log;
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struct mpv_global *global;
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GL *gl;
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struct mp_hwdec_devices *devs;
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// GLSL extensions required to sample textures from this.
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const char **glsl_extensions;
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// For free use by hwdec driver
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void *priv;
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// For working around the vdpau vs. vaapi mess.
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bool probing;
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// Used in overlay mode only.
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float overlay_colorkey[4];
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};
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struct gl_hwdec_plane {
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GLuint gl_texture;
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GLenum gl_target;
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// Like struct gl_format.format (GL_RED etc.). Currently to detect
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// GL_LUMINANCE_ALPHA and integer formats - can be left to 0 otherwise.
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GLenum gl_format;
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int tex_w, tex_h; // allocated texture size
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};
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struct gl_hwdec_frame {
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struct gl_hwdec_plane planes[4];
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bool vdpau_fields;
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};
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struct gl_hwdec_driver {
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// Name of the interop backend. This is used for informational purposes only.
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const char *name;
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// Used to explicitly request a specific API.
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enum hwdec_type api;
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// The hardware surface IMGFMT_ that must be passed to map_image later.
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// If the test_format callback is set, this field is ignored!
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int imgfmt;
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// Dosn't load this unless requested by name.
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bool testing_only;
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// Create the hwdec device. It must add it to hw->devs, if applicable.
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int (*create)(struct gl_hwdec *hw);
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// Prepare for rendering video. (E.g. create textures.)
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// Called on initialization, and every time the video size changes.
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// *params must be set to the format the hw textures return.
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int (*reinit)(struct gl_hwdec *hw, struct mp_image_params *params);
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// Return textures that contain a copy or reference of the given hw_image.
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// The textures mirror the format returned by the reinit params argument.
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// The textures must remain valid until unmap is called.
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// hw_image remains referenced by the caller until unmap is called.
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int (*map_frame)(struct gl_hwdec *hw, struct mp_image *hw_image,
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struct gl_hwdec_frame *out_frame);
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// Must be idempotent.
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void (*unmap)(struct gl_hwdec *hw);
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void (*destroy)(struct gl_hwdec *hw);
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// Optional callback for checking input format support.
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bool (*test_format)(struct gl_hwdec *hw, int imgfmt);
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// The following functions provide an alternative API. Each gl_hwdec_driver
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// must have either map_frame or overlay_frame set (not both or none), and
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// if overlay_frame is set, it operates in overlay mode. In this mode,
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// OSD etc. is rendered via OpenGL, but the video is rendered as a separate
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// layer below it.
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// Non-overlay mode is strictly preferred, so try not to use overlay mode.
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// Set the given frame as overlay, replacing the previous one.
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// hw_image==NULL is passed to clear the overlay.
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int (*overlay_frame)(struct gl_hwdec *hw, struct mp_image *hw_image);
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// Move overlay position within the "window".
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void (*overlay_adjust)(struct gl_hwdec *hw, int w, int h,
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struct mp_rect *src, struct mp_rect *dst);
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};
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struct gl_hwdec *gl_hwdec_load_api(struct mp_log *log, GL *gl,
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struct mpv_global *g,
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struct mp_hwdec_devices *devs,
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enum hwdec_type api);
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struct gl_hwdec *gl_hwdec_load(struct mp_log *log, GL *gl,
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struct mpv_global *g,
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struct mp_hwdec_devices *devs,
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const char *name);
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int gl_hwdec_validate_opt(struct mp_log *log, const m_option_t *opt,
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struct bstr name, struct bstr param);
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void gl_hwdec_uninit(struct gl_hwdec *hwdec);
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bool gl_hwdec_test_format(struct gl_hwdec *hwdec, int imgfmt);
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#endif
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