// Initializes SDL.
func Init(flags uint32) int {
status := int(C.SDL_Init(C.Uint32(flags)))
if (status != 0) && (runtime.GOOS == "darwin") && (flags&INIT_VIDEO != 0) {
if os.Getenv("SDL_VIDEODRIVER") == "" {
os.Setenv("SDL_VIDEODRIVER", "x11")
status = int(C.SDL_Init(C.Uint32(flags)))
if status != 0 {
os.Setenv("SDL_VIDEODRIVER", "")
}
}
}
return status
}
func InitGL(width, height, msaa int, fullscreen bool) {
C.SDL_Init(C.SDL_INIT_VIDEO)
C.SDL_VideoInit( /*nil*/ C.SDL_GetVideoDriver(0))
C.SDL_GL_SetAttribute(C.SDL_GL_CONTEXT_MAJOR_VERSION, 3)
C.SDL_GL_SetAttribute(C.SDL_GL_CONTEXT_MINOR_VERSION, 2)
if msaa != 0 {
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLEBUFFERS, 1)
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLESAMPLES, C.int(msaa))
}
C.SDL_GL_SetAttribute(C.SDL_GL_DEPTH_SIZE, 16)
//win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED,C.int(width), C.int(height), C.SDL_WINDOW_OPENGL)
if fullscreen {
win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED, C.int(width), C.int(height), C.SDL_WINDOW_OPENGL|C.SDL_WINDOW_FULLSCREEN_DESKTOP)
} else {
win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED, C.int(width), C.int(height), C.SDL_WINDOW_OPENGL)
}
C.SDL_ShowWindow(win)
wat := C.SDL_GL_CreateContext(win)
fmt.Println(C.GoString(C.SDL_GetVideoDriver(0)))
C.SDL_GL_MakeCurrent(win, wat)
//C.SDL_GL_SetSwapInterval(1)
C.glEnable(C.GL_DEPTH_TEST)
C.glDepthFunc(C.GL_LEQUAL)
C.glClearColor(0.3, 0.5, 1, 0)
C.glClear(C.GL_COLOR_BUFFER_BIT | C.GL_DEPTH_BUFFER_BIT)
printerr("failed to initialize openGL")
}
func Init(flags uint32) error {
if C.SDL_Init(C.Uint32(flags)) != 0 {
return getError()
}
return nil
}
func mainLoop(width, height int) {
// SDL window must be created in the same thread where the events are
// polled. Hence this stuff must be in a separate goroutine along with the
// event loop.
initFlags := int64(C.SDL_INIT_VIDEO) | int64(C.SDL_INIT_AUDIO)
screenFlags := 0
if C.SDL_Init(C.Uint32(initFlags)) == C.int(-1) {
panic(getError())
}
screen := C.SDL_SetVideoMode(
C.int(width), C.int(height), 32, C.Uint32(screenFlags))
if screen == nil {
panic(getError())
}
C.SDL_EnableUNICODE(1)
C.SDL_EnableKeyRepeat(C.SDL_DEFAULT_REPEAT_DELAY, C.SDL_DEFAULT_REPEAT_INTERVAL)
initAudio()
// Synchronize with Run function.
coord <- true
eventLoop()
C.SDL_Quit()
// Synchronize with Stop function.
coord <- true
runLevel = off
}
func init() {
log.SetFlags(0)
status := C.SDL_Init(C.SDL_INIT_EVERYTHING)
if status != 0 {
log.Fatal(sdlerr())
}
}
func Init() (error string) {
flags := int64(C.SDL_INIT_VIDEO)
if C.SDL_Init(C.Uint32(flags)) != 0 {
error = C.GoString(C.SDL_GetError())
return
}
return ""
}
// New returns a newly created Screen
func New(width int, height int, fullscreen bool, FSAA int, name string) *Screen {
window := &Screen{}
C.SDL_Init(C.SDL_INIT_VIDEO)
C.setGlContextAttributes()
C.SDL_GL_SetAttribute(C.SDL_GL_DOUBLEBUFFER, 1)
// Force hardware accel
C.SDL_GL_SetAttribute(C.SDL_GL_ACCELERATED_VISUAL, 1)
if FSAA > 0 {
// FSAA (Fullscreen antialiasing)
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLEBUFFERS, 1)
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLESAMPLES, C.int(FSAA)) // 2, 4, 8
}
flags := C.SDL_WINDOW_OPENGL | C.SDL_RENDERER_ACCELERATED
if fullscreen {
flags = flags | C.SDL_WINDOW_FULLSCREEN
}
C.SDL_CreateWindowAndRenderer(C.int(width), C.int(height), C.Uint32(flags), &window.sdlWindow, &window.renderer)
C.SDL_SetWindowTitle(window.sdlWindow, C.CString(name))
C.SDL_GL_CreateContext(window.sdlWindow)
if err := gl.Init(); err != nil {
panic(err)
}
version := gl.GoStr(gl.GetString(gl.VERSION))
fmt.Println("OpenGL version", version)
// Configure global settings
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.ClearColor(0.0, 0.0, 0.0, 1.0)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
window.Width = width
window.Height = height
window.name = name
window.shouldClose = false
C.SDL_GL_SwapWindow(window.sdlWindow)
window.startTime = time.Now()
window.frameTime = time.Now()
C.SDL_GL_SetSwapInterval(1)
window.vsync = true
return window
}
// Start starts the user interface. It must be called by the main go routine, and it
// never returns. The function f is called in a new go routine as the new "main"
// function. Rate is the rate at which the user interface should poll for events.
func Start(f func(), rate time.Duration) {
if C.SDL_Init(C.SDL_INIT_EVERYTHING) < 0 {
panic(sdlError())
}
initAudio()
go func() {
f()
os.Exit(0)
}()
tick := time.NewTicker(rate)
for {
select {
case f := <-doChan:
f()
case <-tick.C:
pollEvents()
}
}
}
//Opens a window.
//Returns an indicator of success.
func OpenDisplay(width, height int, fullscreen bool) bool {
if C.SDL_Init(C.SDL_INIT_VIDEO) != 0 {
return false
}
C.TTF_Init()
var flags C.Uint32 = C.SDL_DOUBLEBUF
flags |= C.SDL_SWSURFACE
flags |= C.SDL_HWACCEL
if fullscreen {
screen = C.openDisplayFullscreen(C.int(width), C.int(height))
} else {
screen = C.openDisplay(C.int(width), C.int(height))
}
if screen == nil {
return false
}
C.SDL_WM_SetCaption(C.CString(displayTitle), C.CString(""))
C.SDL_GL_SetAttribute(C.SDL_GL_SWAP_CONTROL, 1)
return true
}
func LaunchGame(title string, width, height int) error {
// Convert the title to a c-string
ctitle := C.CString(title)
defer C.free(unsafe.Pointer(ctitle))
// Initialize SDL
if C.SDL_Init(C.SDL_INIT_VIDEO) < 0 {
return errors.New("SDL_Init")
}
defer C.SDL_Quit()
// Create the window
window = C.SDL_CreateWindow(ctitle, C.SDL_WINDOWPOS_UNDEFINED, C.SDL_WINDOWPOS_UNDEFINED, C.int(width), C.int(height), C.SDL_WINDOW_SHOWN)
if window == nil {
return errors.New("SDL_CreateWindow")
}
defer C.SDL_DestroyWindow(window)
// Create the renderer
renderer = C.SDL_CreateRenderer(window, C.int(-1), C.SDL_RENDERER_ACCELERATED|C.SDL_RENDERER_PRESENTVSYNC)
if renderer == nil {
return errors.New("SDL_CreateRenderer")
}
defer C.SDL_DestroyRenderer(renderer)
// Initialize image support
if success := int(C.initIMG()); success == 0 {
return errors.New("IMG_Init")
}
EventInit()
C.gameLoop()
destroyTextures()
return nil
}
func Init(initSDL, stereo bool, rate, nchannels, nbuffers int) {
if initSDL {
GSDLWasInitHere = true
if C.SDL_Init(C.SDL_INIT_AUDIO) != 0 {
panic(fmt.Sprintf("Unable to initialize SDL: %v\n", util.GetSdlError()))
}
}
//initFlags := C.MIX_INIT_FLAC | C.MIX_INIT_MP3 | C.MIX_INIT_OGG
//C.Mix_Init(initFlags)
audio_format := C.AUDIO_S16SYS
nstereo := 1
if stereo {
nstereo = 2
}
if C.Mix_OpenAudio(C.int(rate), C.Uint16(audio_format),
C.int(nstereo), C.int(nbuffers)) != 0 {
panic(fmt.Sprintf("Unable to initialize audio: %v\n", util.GetMixError()))
}
channel.Allocate(nchannels)
}
// Initializes SDL.
func Init(flags uint32) int {
GlobalMutex.Lock()
status := int(C.SDL_Init(C.Uint32(flags)))
GlobalMutex.Unlock()
return status
}
func Init() int {
x := C.SDL_Init(C.SDL_INIT_VIDEO)
return int(x)
}
func Init(flags uint32) (err error) {
if C.SDL_Init(C.Uint32(flags)) != 0 {
return errors.New(C.GoString(C.SDL_GetError()))
}
return nil
}
func Init(flags uint32) int {
return int(C.SDL_Init(C.Uint32(flags)))
}
// Init initializes the subsystems specified by flags.
//
// Note: Init must be called before using any other SDL function.
//
// Note: Quit must be called when finished using the SDL library.
//
// Note: Unless the InitNoParachute flag is set, it will install cleanup signal
// handlers for some commonly ignored fatal signals (like SIGSEGV).
func Init(flags InitFlag) (err error) {
if C.SDL_Init(C.Uint32(flags)) != 0 {
return getError()
}
return nil
}
func init() {
C.SDL_Init(C.SDL_INIT_VIDEO | C.SDL_INIT_AUDIO | C.SDL_INIT_TIMER)
}
func InitSDL() {
if ok := C.SDL_Init(C.SDL_INIT_AUDIO); ok < 0 {
panic(ok)
}
}
func Init(flags uint32) int {
_flags := (C.Uint32)(flags)
return (int)(C.SDL_Init(_flags))
}
func main() {
runtime.GOMAXPROCS(32)
// sdl
C.SDL_Init(C.SDL_INIT_AUDIO | C.SDL_INIT_VIDEO | C.SDL_INIT_TIMER)
defer C.SDL_Quit()
runtime.LockOSThread()
window := C.SDL_CreateWindow(C.CString("play"), 0, 0, 1680, 1050,
C.SDL_WINDOW_BORDERLESS|C.SDL_WINDOW_RESIZABLE|C.SDL_WINDOW_MAXIMIZED|C.SDL_WINDOW_OPENGL)
if window == nil {
fatalSDLError()
}
defer C.SDL_DestroyWindow(window)
C.SDL_DisableScreenSaver()
renderer := C.SDL_CreateRenderer(window, -1, C.SDL_RENDERER_ACCELERATED)
if renderer == nil {
fatalSDLError()
}
defer C.SDL_DestroyRenderer(renderer)
var width, height C.int
C.SDL_GetWindowSize(window, &width, &height)
texture := C.SDL_CreateTexture(renderer,
C.SDL_PIXELFORMAT_YV12,
C.SDL_TEXTUREACCESS_STREAMING,
width, height)
if texture == nil {
fatalSDLError()
}
defer C.SDL_DestroyTexture(texture)
// sdl ttf
if C.TTF_Init() == C.int(-1) {
log.Fatal("sdl ttf init failed")
}
defer C.TTF_Quit()
font := C.TTF_OpenFont(C.CString("/home/reus/font.ttf"), 32)
if font == nil {
fatalTTFError()
}
defer C.TTF_CloseFont(font)
// open decoder
decoder, err := NewDecoder(os.Args[1])
if err != nil {
log.Fatal(err)
}
if len(decoder.AudioStreams) == 0 || len(decoder.VideoStreams) == 0 {
log.Fatal("no video or audio")
}
defer decoder.Close()
// audio
aCodecCtx := decoder.AudioStreams[0].codec
audioStream := setupAudioOutput(int(aCodecCtx.sample_rate), int(aCodecCtx.channels), decoder)
// call closure in sdl thread
callEventCode := C.SDL_RegisterEvents(1)
callbacks := make(chan func(Env), 1024)
call := func(f func(env Env)) {
var event C.SDL_Event
var userevent C.SDL_UserEvent
userevent._type = C.SDL_USEREVENT
userevent.code = C.Sint32(callEventCode)
C.set_userevent(&event, userevent)
callbacks <- f
C.SDL_PushEvent(&event)
}
// show fps
nFrames := 0
var fpsTexture *C.SDL_Texture
var fpsColor C.SDL_Color
var fpsSrc, fpsDst C.SDL_Rect
fpsColor.r = 255
fpsColor.g = 255
fpsColor.b = 255
fpsColor.a = 0
go func() {
for _ = range time.NewTicker(time.Second * 1).C {
call(func(env Env) {
cText := C.CString(fmt.Sprintf("%d", nFrames))
sur := C.TTF_RenderUTF8_Blended(font, cText, fpsColor)
fpsSrc.w = sur.w
fpsSrc.h = sur.h
fpsDst.w = sur.w
fpsDst.h = sur.h
C.SDL_DestroyTexture(fpsTexture)
fpsTexture = C.SDL_CreateTextureFromSurface(env.renderer, sur)
C.SDL_FreeSurface(sur)
C.free(unsafe.Pointer(cText))
nFrames = 0
})
}
}()
// render
go func() {
for {
frame := <-decoder.timedFrames
nFrames++
call(func(env Env) {
C.SDL_UpdateYUVTexture(env.texture, nil,
(*C.Uint8)(unsafe.Pointer(frame.data[0])), frame.linesize[0],
(*C.Uint8)(unsafe.Pointer(frame.data[1])), frame.linesize[1],
(*C.Uint8)(unsafe.Pointer(frame.data[2])), frame.linesize[2])
C.SDL_RenderCopy(env.renderer, env.texture, nil, nil)
C.SDL_RenderCopy(env.renderer, fpsTexture, &fpsSrc, &fpsDst)
C.SDL_RenderPresent(env.renderer)
decoder.RecycleFrame(frame)
})
}
}()
// start decode
decoder.Start(decoder.VideoStreams[0], decoder.AudioStreams[0], width, height)
ret := C.Pa_StartStream(audioStream)
if ret != C.paNoError {
fatalPAError(ret)
}
// main loop
var ev C.SDL_Event
env := Env{
window: window,
renderer: renderer,
texture: texture,
}
for {
if C.SDL_WaitEvent(&ev) == C.int(0) {
fatalSDLError()
}
switch C.get_event_type(&ev) {
case C.SDL_QUIT:
os.Exit(0)
case C.SDL_KEYDOWN:
key := C.get_event_key(&ev)
switch key.keysym.sym {
case C.SDLK_q: // quit
os.Exit(0)
case C.SDLK_f: // forward
decoder.Seek(time.Second * 60)
}
case C.SDL_USEREVENT:
if C.get_userevent_code(&ev) == callEventCode {
(<-callbacks)(env)
}
}
}
}
// This function loads the SDL dynamically linked library and initializes
// the subsystems specified by 'flags' (and those satisfying dependencies)
// Unless the INIT_NOPARACHUTE flag is set, it will install cleanup
// signal handlers for some commonly ignored fatal signals (like SIGSEGV)
func Init(flags uint32) uint32 {
return uint32(C.SDL_Init(C.Uint32(flags)))
}