mirror of https://github.com/mpv-player/mpv
84 lines
3.9 KiB
C
84 lines
3.9 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include "libmpv/render.h"
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#include "vo.h"
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// Helper for finding a parameter value. It returns the direct pointer to the
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// value, and if not present, just returns the def argument. In particular, if
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// def is not NULL, this never returns NULL (unless a param value is defined
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// as accepting NULL, or the libmpv API user is triggering UB).
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void *get_mpv_render_param(mpv_render_param *params, mpv_render_param_type type,
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void *def);
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#define GET_MPV_RENDER_PARAM(params, type, ctype, def) \
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(*(ctype *)get_mpv_render_param(params, type, &(ctype){(def)}))
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typedef int (*mp_render_cb_control_fn)(struct vo *vo, void *cb_ctx, int *events,
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uint32_t request, void *data);
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void mp_render_context_set_control_callback(mpv_render_context *ctx,
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mp_render_cb_control_fn callback,
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void *callback_ctx);
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bool mp_render_context_acquire(mpv_render_context *ctx);
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struct render_backend {
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struct mpv_global *global;
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struct mp_log *log;
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const struct render_backend_fns *fns;
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// Set on init, immutable afterwards.
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int driver_caps;
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struct mp_hwdec_devices *hwdec_devs;
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void *priv;
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};
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// Generic backend for rendering via libmpv. This corresponds to vo/vo_driver,
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// except for rendering via the mpv_render_*() API. (As a consequence it's as
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// generic as the VO API.) Like with VOs, one backend can support multiple
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// underlying GPU APIs.
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struct render_backend_fns {
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// Returns libmpv error code. In particular, this function has to check for
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// MPV_RENDER_PARAM_API_TYPE, and silently return MPV_ERROR_NOT_IMPLEMENTED
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// if the API is not included in this backend.
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// If this fails, ->destroy() will be called.
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int (*init)(struct render_backend *ctx, mpv_render_param *params);
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// Check if the passed IMGFMT_ is supported.
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bool (*check_format)(struct render_backend *ctx, int imgfmt);
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// Implementation of mpv_render_context_set_parameter(). Optional.
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int (*set_parameter)(struct render_backend *ctx, mpv_render_param param);
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// Like vo_driver.reconfig().
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void (*reconfig)(struct render_backend *ctx, struct mp_image_params *params);
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// Like VOCTRL_RESET.
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void (*reset)(struct render_backend *ctx);
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void (*screenshot)(struct render_backend *ctx, struct vo_frame *frame,
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struct voctrl_screenshot *args);
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void (*perfdata)(struct render_backend *ctx,
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struct voctrl_performance_data *out);
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// Like vo_driver.get_image().
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struct mp_image *(*get_image)(struct render_backend *ctx, int imgfmt,
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int w, int h, int stride_align);
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// This has two purposes: 1. set queue attributes on VO, 2. update the
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// renderer's OSD pointer. Keep in mind that as soon as the caller releases
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// the renderer lock, the VO pointer can become invalid. The OSD pointer
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// will technically remain valid (even though it's a vo field), until it's
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// unset with this function.
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// Will be called if vo changes, or if renderer options change.
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void (*update_external)(struct render_backend *ctx, struct vo *vo);
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// Update screen area.
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void (*resize)(struct render_backend *ctx, struct mp_rect *src,
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struct mp_rect *dst, struct mp_osd_res *osd);
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// Get target surface size from mpv_render_context_render() arguments.
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int (*get_target_size)(struct render_backend *ctx, mpv_render_param *params,
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int *out_w, int *out_h);
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// Implementation of mpv_render_context_render().
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int (*render)(struct render_backend *ctx, mpv_render_param *params,
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struct vo_frame *frame);
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// Free all data in ctx->priv.
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void (*destroy)(struct render_backend *ctx);
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};
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extern const struct render_backend_fns render_backend_gpu;
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extern const struct render_backend_fns render_backend_sw;
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