Пример #1
0
// Renderer (https://wiki.libsdl.org/SDL_CreateTextureFromSurface)
func (renderer *Renderer) CreateTextureFromSurface(surface *Surface) (*Texture, error) {
	_texture := C.SDL_CreateTextureFromSurface(renderer.cptr(), surface.cptr())
	if _texture == nil {
		return nil, GetError()
	}
	return (*Texture)(unsafe.Pointer(_texture)), nil
}
Пример #2
0
func LoadImage(path string) *Image {
	var retval *Image
	var texture *C.SDL_Texture

	i := C.IMG_Load(C.CString(path))
	if i == nil {
		errlog.Println("Surface for", path, "loaded nil")
		return nil
	}

	if renderer == nil {
		errlog.Println("Cannot load image because renderer is nil")
		return nil
	}

	runMainOp(func() {
		texture = C.SDL_CreateTextureFromSurface(renderer, i)
	})

	if texture == nil {
		errlog.Println("Texture for", path, "loaded nil")
		return nil
	}
	retval = new(Image)
	retval.surface = texture
	C.SDL_FreeSurface(i)
	return retval
}
Пример #3
0
func CreateTextureFromSurface(r *Renderer, s *Surface) *Texture {
	GlobalMutex.Lock()
	defer GlobalMutex.Unlock()

	texture := C.SDL_CreateTextureFromSurface(r.cRenderer, s.cSurface)
	return wrapTexture(texture)
}
Пример #4
0
func LoadPNG(path, name string) error {
	// Make sure this name isn't already in use
	if _, ok := Textures[name]; ok {
		return errors.New("Texture name already in use")
	}

	// Convert the path to a c-string
	cpath := C.CString(path)
	defer C.free(unsafe.Pointer(cpath))

	// Load the surface
	surface := C.IMG_Load(cpath)
	if surface == nil {
		return errors.New("SDL_LoadBMP")
	}
	defer C.SDL_FreeSurface(surface)

	// Create the texture
	tex := C.SDL_CreateTextureFromSurface(renderer, surface)
	if tex == nil {
		return errors.New("SDL_CreateTextureFromSurface")
	}

	Textures[name] = Texture{tex: tex}

	return nil
}
Пример #5
0
func (r *Renderer) CreateTextureFromSurface(s *Surface) (*Texture, error) {
	t := C.SDL_CreateTextureFromSurface(r.c, s.c())
	if t == nil {
		return nil, getError()
	}

	return &Texture{t}, nil
}
Пример #6
0
func (w *Window) NewTexture(s *Surface) (*Texture, error) {
	t := C.SDL_CreateTextureFromSurface(w.ren, s.surf)
	if t == nil {
		return nil, sdlerr()
	}

	tex := &Texture{t}
	runtime.SetFinalizer(tex, freetex)
	return tex, nil
}
Пример #7
0
func (me *Font) WriteTo(text string, t *Image, c Color) bool {
	sur := C.TTF_RenderText_Blended(me.font, C.CString(text), c.toSDL_Color())

	runMainOp(func() {
		t.surface = C.SDL_CreateTextureFromSurface(renderer, sur)
	})

	var w, h C.int
	C.SDL_QueryTexture(t.surface, nil, nil, &w, &h)
	t.Width = int(w)
	t.Height = int(h)
	return t.surface != nil
}
Пример #8
0
func (r *Renderer) CreateTextureFromSurface(s *Surface) *Texture {
	texture := C.SDL_CreateTextureFromSurface(r.cRenderer, s.cSurface)
	return wrapTexture(texture)
}
Пример #9
0
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)
			}
		}
	}
}
Пример #10
0
func (renderer *Renderer) CreateTextureFromSurface(surface *Surface) *Texture {
	_renderer := (*C.SDL_Renderer)(unsafe.Pointer(renderer))
	_surface := (*C.SDL_Surface)(unsafe.Pointer(surface))
	return (*Texture)(unsafe.Pointer(C.SDL_CreateTextureFromSurface(_renderer, _surface)))
}
Пример #11
0
func (s *Surface) CreateTexture(_renderer *Renderer) *Texture {
	var tex = C.SDL_CreateTextureFromSurface(_renderer.Get(), s.Get())
	return (*Texture)(cast(tex))
}
Пример #12
0
func (renderer *Renderer) CreateTextureFromSurface(surface *Surface) *Texture {
	return (*Texture)(unsafe.Pointer(C.SDL_CreateTextureFromSurface(renderer.cptr(), surface.cptr())))
}