#pragma once

#include <al/types.h>
#include <stl/window.h>
#ifdef CAMU_HAVE_FFMPEG
#include <libavcodec/avcodec.h>
#endif

#if defined STELA_API_OPENGL
#ifdef STELA_USE_EGL
#include <stl/egl.h>
#endif
#endif

enum {
    CAMU_RENDERER_FULLSCREEN = 0,
    CAMU_RENDERER_SCALING,
    CAMU_RENDERER_BACKGROUND
};

enum {
    CAMU_SCALING_DEFAULT = 0,
    CAMU_SCALING_NEAREST
};

enum {
    CAMU_BACKGROUND_DEFAULT = 0,
    CAMU_BACKGROUND_TRANSPARENT
};

struct camu_overlay {
    u16 ref;
    u16 alloc;
    s32 num;
    struct nn_mutex *lock;
};

#define CAMU_OVERLAY_OFFSET(overlay, n) ((void *)(((u8 *)(overlay)) + sizeof(struct camu_overlay) + (n)))
#define CAMU_OVERLAY_FROM_HEAD(p) (struct camu_overlay *)(((u8 *)p) - sizeof(struct camu_overlay))

struct camu_frame_queue;
struct camu_codec_stream;
struct camu_screen;
struct camu_renderer {
    bool (*create_renderer)(
        struct camu_renderer *, u32 *, u32 *,
#if defined STELA_API_VULKAN
        VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL (*get_vk_proc_address)(VkInstance, const char *),
        VkResult (*vk_create_surface)(void *, VkInstance, VkSurfaceKHR *),
        VkResult (*vk_destroy_surface)(VkInstance, VkSurfaceKHR),
        const char *const *(*vk_get_extensions)(u32 *),
#elif defined STELA_API_DX11
        HWND win32_window,
#elif defined STELA_API_OPENGL
#ifdef STELA_USE_EGL
        EGLDisplay display,
        EGLContext context,
#endif
        void (*get_gl_proc_address(char const *))(void),
        bool (*gl_load_loader)(void *),
        bool (*gl_make_current)(void *),
        void (*gl_release_current)(void *),
        void (*gl_swap_buffers)(void *),
#endif
        void *priv);
    struct camu_frame_queue *(*create_queue)(struct camu_renderer *);
    void (*add_font)(struct camu_renderer *, struct camu_codec_stream *);
    u32 (*get_latency)(struct camu_renderer *);
    void (*resize)(struct camu_renderer *, u32 *, u32 *);
    void (*set)(struct camu_renderer *, u8, u8);
    bool (*render)(struct camu_renderer *, struct camu_screen *, bool);
#ifdef CAMU_HAVE_FFMPEG
    s32 (*get_buffer2)(struct AVCodecContext *s, AVFrame *frame, s32 flags);
    void *opaque;
#endif
    void (*free)(struct camu_renderer **);
};

struct camu_overlay *camu_overlay_alloc(struct camu_overlay *prev, u32 count, size_t item_size);