Example #1
0
// Renderer (https://wiki.libsdl.org/SDL_RenderCopy)
func (renderer *Renderer) Copy(texture *Texture, src, dst *Rect) error {
	_ret := C.SDL_RenderCopy(renderer.cptr(), texture.cptr(), src.cptr(), dst.cptr())
	if _ret < 0 {
		return GetError()
	}
	return nil
}
Example #2
0
func (r *Renderer) Copy(t *Texture, src, dst *Rect) {
	GlobalMutex.Lock()
	defer GlobalMutex.Unlock()

	C.SDL_RenderCopy(r.cRenderer, t.cTexture,
		(*C.SDL_Rect)(cast(src)), (*C.SDL_Rect)(cast(dst)))
}
Example #3
0
func (renderer *Renderer) Copy(texture *Texture, srcrect, dstrect *Rect) int {
	_renderer := (*C.SDL_Renderer)(unsafe.Pointer(renderer))
	_texture := (*C.SDL_Texture)(unsafe.Pointer(texture))
	_srcrect := (*C.SDL_Rect)(unsafe.Pointer(srcrect))
	_dstrect := (*C.SDL_Rect)(unsafe.Pointer(dstrect))
	return (int)(C.SDL_RenderCopy(_renderer, _texture, _srcrect, _dstrect))
}
Example #4
0
func (r *Renderer) Copy(t *Texture, sr *Rect, dr *Rect) error {
	if C.SDL_RenderCopy(r.c, t.c, sr.c(), dr.c()) != 0 {
		return getError()
	}

	return nil
}
Example #5
0
File: canvas.go Project: velour/ui
// FillString fills a string of text in the current font and draw color.  X and y specify the
// upper-left corner of the bounding box of the text, and the width and height of the
// bounding box is returned.
func (c Canvas) FillString(s string, x, y int) (width, height int) {
	img := c.font.draw(s, c.color())
	tex := texFromImage(c.win.rend, img)
	defer C.SDL_DestroyTexture(tex)
	b := img.Bounds()
	w, h := b.Dx(), b.Dy()
	dst := image.Rect(x, y, x+w, y+h)
	if C.SDL_RenderCopy(c.win.rend, tex, nil, sdlRect(&dst)) < 0 {
		panic(sdlError())
	}
	return w, h
}
Example #6
0
//Draws the image at the given coordinates.
func DrawImage(img *Image, destX, destY, srcX, srcY, srcW, srcH int) {
	var src, dest C.SDL_Rect
	dest.x = C.int(destX)
	dest.y = C.int(destY)
	dest.w = C.int(img.Width)
	dest.h = C.int(img.Height)

	src.x = C.int(srcX)
	src.y = C.int(srcY)
	src.w = C.int(srcW)
	src.h = C.int(srcH)
	C.SDL_SetTextureAlphaMod(img.surface, 255)
	C.SDL_RenderCopy(renderer, img.surface, &src, &dest)
}
Example #7
0
File: canvas.go Project: velour/ui
// DrawPNG draws the image loaded from a PNG file to the canvas.
// The image is drawn with the upper-left corner located at x, y.
func (c Canvas) DrawPNG(path string, x, y int) {
	tex, ok := c.win.imgs[path]
	if !ok {
		img := loadPNG(path)
		tex = texture{
			tex:    texFromImage(c.win.rend, img),
			width:  img.Bounds().Dx(),
			height: img.Bounds().Dy(),
		}
		c.win.imgs[path] = tex
	}
	dst := image.Rect(x, y, x+tex.width, y+tex.height)
	if C.SDL_RenderCopy(c.win.rend, tex.tex, nil, sdlRect(&dst)) < 0 {
		panic(sdlError())
	}
}
Example #8
0
File: sdl.go Project: rwcarlsen/sdl
func (w *Window) Copy(tex *Texture, src, dst *Rect) error {
	csrc := sdlRect(src)
	if src != nil {
		defer C.free(unsafe.Pointer(csrc))
	}

	cdst := sdlRect(dst)
	if dst != nil {
		defer C.free(unsafe.Pointer(cdst))
	}

	status := C.SDL_RenderCopy(w.ren, tex.tex, csrc, cdst)
	if status != 0 {
		return sdlerr()
	}
	return nil
}
Example #9
0
func (t *Texture) RenderCopy(_renderer *Renderer, _srcrect *Rect, _dstrect *Rect) {
	src := (*C.SDL_Rect)(cast(_srcrect))
	dst := (*C.SDL_Rect)(cast(_dstrect))
	C.SDL_RenderCopy(_renderer.Get(), t.Get(), src, dst)
}
Example #10
0
func (r *Renderer) Copy(t *Texture, src, dst *Rect) bool {
	ret := C.SDL_RenderCopy(r.cRenderer, t.cTexture,
		(*C.SDL_Rect)(cast(src)), (*C.SDL_Rect)(cast(dst)))
	return int(ret) == 0
}
Example #11
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)
			}
		}
	}
}
Example #12
0
func DrawTexture(tex Texture, x, y, w, h int) {
	dest := C.struct_SDL_Rect{x: C.int(x), y: C.int(y), w: C.int(w), h: C.int(h)}
	C.SDL_RenderCopy(renderer, tex.tex, nil, &dest)
}
Example #13
0
func (renderer *Renderer) Copy(texture *Texture, src, dst *Rect) int {
	return int(C.SDL_RenderCopy(renderer.cptr(), texture.cptr(), src.cptr(), dst.cptr()))
}