/*

  Simple DirectMedia Layer

  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied

  warranty.  In no event will the authors be held liable for any damages

  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,

  including commercial applications, and to alter it and redistribute it

  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not

     claim that you wrote the original software. If you use this software

     in a product, an acknowledgment in the product documentation would be

     appreciated but is not required.

  2. Altered source versions must be plainly marked as such, and must not be

     misrepresented as being the original software.

  3. This notice may not be removed or altered from any source distribution.

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_VIVANTE

/* SDL internals */

#include "../SDL_sysvideo.h"

#include "SDL_version.h"

#include "SDL_syswm.h"

#include "SDL_loadso.h"

#include "SDL_events.h"

#include "../../events/SDL_events_c.h"

#ifdef SDL_INPUT_LINUXEV

#include "../../core/linux/SDL_evdev.h"

#endif

#include "SDL_vivantevideo.h"

#include "SDL_vivanteplatform.h"

#include "SDL_vivanteopengles.h"

static int

VIVANTE_Available(void)

{

    return 1;

}

static void

VIVANTE_Destroy(SDL_VideoDevice * device)

{

    if (device->driverdata != NULL) {

        SDL_free(device->driverdata);

        device->driverdata = NULL;

    }

}

static SDL_VideoDevice *

VIVANTE_Create()

{

    SDL_VideoDevice *device;

    SDL_VideoData *data;

    /* Initialize SDL_VideoDevice structure */

    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));

    if (device == NULL) {

        SDL_OutOfMemory();

        return NULL;

    }

    /* Initialize internal data */

    data = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));

    if (data == NULL) {

        SDL_OutOfMemory();

        SDL_free(device);

        return NULL;

    }

    device->driverdata = data;

    device->num_displays = 0;

    /* Set device free function */

    device->free = VIVANTE_Destroy;

    /* Setup all functions which we can handle */

    device->VideoInit = VIVANTE_VideoInit;

    device->VideoQuit = VIVANTE_VideoQuit;

    device->GetDisplayModes = VIVANTE_GetDisplayModes;

    device->SetDisplayMode = VIVANTE_SetDisplayMode;

    device->CreateWindow = VIVANTE_CreateWindow;

    device->SetWindowTitle = VIVANTE_SetWindowTitle;

    device->SetWindowPosition = VIVANTE_SetWindowPosition;

    device->SetWindowSize = VIVANTE_SetWindowSize;

    device->ShowWindow = VIVANTE_ShowWindow;

    device->HideWindow = VIVANTE_HideWindow;

    device->DestroyWindow = VIVANTE_DestroyWindow;

    device->GetWindowWMInfo = VIVANTE_GetWindowWMInfo;

    device->GL_LoadLibrary = VIVANTE_GLES_LoadLibrary;

    device->GL_GetProcAddress = VIVANTE_GLES_GetProcAddress;

    device->GL_UnloadLibrary = VIVANTE_GLES_UnloadLibrary;

    device->GL_CreateContext = VIVANTE_GLES_CreateContext;

    device->GL_MakeCurrent = VIVANTE_GLES_MakeCurrent;

    device->GL_SetSwapInterval = VIVANTE_GLES_SetSwapInterval;

    device->GL_GetSwapInterval = VIVANTE_GLES_GetSwapInterval;

    device->GL_SwapWindow = VIVANTE_GLES_SwapWindow;

    device->GL_DeleteContext = VIVANTE_GLES_DeleteContext;

    device->PumpEvents = VIVANTE_PumpEvents;

    return device;

}

VideoBootStrap VIVANTE_bootstrap = {

    "vivante",

    "Vivante EGL Video Driver",

    VIVANTE_Available,

    VIVANTE_Create

};

/*****************************************************************************/

/* SDL Video and Display initialization/handling functions                   */

/*****************************************************************************/

static int

VIVANTE_AddVideoDisplays(_THIS)

{

    SDL_VideoData *videodata = _this->driverdata;

    SDL_VideoDisplay display;

    SDL_DisplayMode current_mode;

    SDL_DisplayData *data;

    int pitch = 0, bpp = 0;

    unsigned long pixels = 0;

    data = (SDL_DisplayData *) SDL_calloc(1, sizeof(SDL_DisplayData));

    if (data == NULL) {

        return SDL_OutOfMemory();

    }

    SDL_zero(current_mode);

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    data->native_display = vdkGetDisplay(videodata->vdk_private);

    vdkGetDisplayInfo(data->native_display, &current_mode.w, &current_mode.h, &pixels, &pitch, &bpp);

#else

    data->native_display = videodata->fbGetDisplayByIndex(0);

    videodata->fbGetDisplayInfo(data->native_display, &current_mode.w, &current_mode.h, &pixels, &pitch, &bpp);

#endif /* SDL_VIDEO_DRIVER_VIVANTE_VDK */

    switch (bpp)

    {

    default: /* Is another format used? */

    case 16:

        current_mode.format = SDL_PIXELFORMAT_RGB565;

        break;

    }

    /* FIXME: How do we query refresh rate? */

    current_mode.refresh_rate = 60;

    SDL_zero(display);

    display.desktop_mode = current_mode;

    display.current_mode = current_mode;

    display.driverdata = data;

    SDL_AddVideoDisplay(&display);

    return 0;

}

int

VIVANTE_VideoInit(_THIS)

{

    SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    videodata->vdk_private = vdkInitialize();

    if (!videodata->vdk_private) {

        return SDL_SetError("vdkInitialize() failed");

    }

#else

    videodata->egl_handle = SDL_LoadObject("libEGL.so.1");

    if (!videodata->egl_handle) {

        videodata->egl_handle = SDL_LoadObject("libEGL.so");

        if (!videodata->egl_handle) {

            return -1;

        }

    }

#define LOAD_FUNC(NAME) \

    videodata->NAME = SDL_LoadFunction(videodata->egl_handle, #NAME); \

    if (!videodata->NAME) return -1;

    LOAD_FUNC(fbGetDisplay);

    LOAD_FUNC(fbGetDisplayByIndex);

    LOAD_FUNC(fbGetDisplayGeometry);

    LOAD_FUNC(fbGetDisplayInfo);

    LOAD_FUNC(fbDestroyDisplay);

    LOAD_FUNC(fbCreateWindow);

    LOAD_FUNC(fbGetWindowGeometry);

    LOAD_FUNC(fbGetWindowInfo);

    LOAD_FUNC(fbDestroyWindow);

#endif

    if (VIVANTE_SetupPlatform(_this) < 0) {

        return -1;

    }

    if (VIVANTE_AddVideoDisplays(_this) < 0) {

        return -1;

    }

#ifdef SDL_INPUT_LINUXEV

    if (SDL_EVDEV_Init() < 0) {

        return -1;

    }

#endif

    return 0;

}

void

VIVANTE_VideoQuit(_THIS)

{

    SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;

#ifdef SDL_INPUT_LINUXEV

    SDL_EVDEV_Quit();

#endif

    VIVANTE_CleanupPlatform(_this);

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    if (videodata->vdk_private) {

        vdkExit(videodata->vdk_private);

        videodata->vdk_private = NULL;

    }

#else

    if (videodata->egl_handle) {

        SDL_UnloadObject(videodata->egl_handle);

        videodata->egl_handle = NULL;

    }

#endif

}

void

VIVANTE_GetDisplayModes(_THIS, SDL_VideoDisplay * display)

{

    /* Only one display mode available, the current one */

    SDL_AddDisplayMode(display, &display->current_mode);

}

int

VIVANTE_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)

{

    return 0;

}

int

VIVANTE_CreateWindow(_THIS, SDL_Window * window)

{

    SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;

    SDL_DisplayData *displaydata;

    SDL_WindowData *data;

    displaydata = SDL_GetDisplayDriverData(0);

    /* Allocate window internal data */

    data = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));

    if (data == NULL) {

        return SDL_OutOfMemory();

    }

    /* Setup driver data for this window */

    window->driverdata = data;

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    data->native_window = vdkCreateWindow(displaydata->native_display, window->x, window->y, window->w, window->h);

#else

    data->native_window = videodata->fbCreateWindow(displaydata->native_display, window->x, window->y, window->w, window->h);

#endif

    if (!data->native_window) {

        return SDL_SetError("VIVANTE: Can't create native window");

    }

    if (window->flags & SDL_WINDOW_OPENGL) {

        data->egl_surface = SDL_EGL_CreateSurface(_this, data->native_window);

        if (data->egl_surface == EGL_NO_SURFACE) {

            return SDL_SetError("VIVANTE: Can't create EGL surface");

        }

    } else {

        data->egl_surface = EGL_NO_SURFACE;

    }

    /* Window has been successfully created */

    return 0;

}

void

VIVANTE_DestroyWindow(_THIS, SDL_Window * window)

{

    SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;

    SDL_WindowData *data;

    data = window->driverdata;

    if (data) {

        if (data->egl_surface != EGL_NO_SURFACE) {

            SDL_EGL_DestroySurface(_this, data->egl_surface);

        }

        if (data->native_window) {

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

            vdkDestroyWindow(data->native_window);

#else

            videodata->fbDestroyWindow(data->native_window);

#endif

        }

        SDL_free(data);

    }

    window->driverdata = NULL;

}

void

VIVANTE_SetWindowTitle(_THIS, SDL_Window * window)

{

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    SDL_WindowData *data = window->driverdata;

    vdkSetWindowTitle(data->native_window, window->title);

#endif

}

void

VIVANTE_SetWindowPosition(_THIS, SDL_Window * window)

{

    /* FIXME */

}

void

VIVANTE_SetWindowSize(_THIS, SDL_Window * window)

{

    /* FIXME */

}

void

VIVANTE_ShowWindow(_THIS, SDL_Window * window)

{

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    SDL_WindowData *data = window->driverdata;

    vdkShowWindow(data->native_window);

#endif

    SDL_SetMouseFocus(window);

    SDL_SetKeyboardFocus(window);

}

void

VIVANTE_HideWindow(_THIS, SDL_Window * window)

{

#if SDL_VIDEO_DRIVER_VIVANTE_VDK

    SDL_WindowData *data = window->driverdata;

    vdkHideWindow(data->native_window);

#endif

}

/*****************************************************************************/

/* SDL Window Manager function                                               */

/*****************************************************************************/

SDL_bool

VIVANTE_GetWindowWMInfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info)

{

    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;

    SDL_DisplayData *displaydata = SDL_GetDisplayDriverData(0);

    if (info->version.major == SDL_MAJOR_VERSION &&

        info->version.minor == SDL_MINOR_VERSION) {

        info->subsystem = SDL_SYSWM_VIVANTE;

        info->info.vivante.display = displaydata->native_display;

        info->info.vivante.window = data->native_window;

        return SDL_TRUE;

    } else {

        SDL_SetError("Application not compiled with SDL %d.%d\n",

                     SDL_MAJOR_VERSION, SDL_MINOR_VERSION);

        return SDL_FALSE;

    }

}

/*****************************************************************************/

/* SDL event functions                                                       */

/*****************************************************************************/

void VIVANTE_PumpEvents(_THIS)

{

#ifdef SDL_INPUT_LINUXEV

    SDL_EVDEV_Poll();

#endif

}

#endif /* SDL_VIDEO_DRIVER_VIVANTE */

/* vi: set ts=4 sw=4 expandtab: */