Package av
import "exp/nacl/av"
Package av implements audio and video access for Native Client binaries running standalone or embedded in a web browser window.
The C version of the API is documented at http://nativeclient.googlecode.com/svn/data/docs_tarball/nacl/googleclient/native_client/scons-out/doc/html/group__audio__video.html
Package files
av.go event.go image.goConstants
Subsystem values for Init.
const (
SubsystemVideo = 1 << iota
SubsystemAudio
SubsystemEmbed
)
Audio formats.
const (
AudioFormatStereo44K = iota
AudioFormatStereo48K
)
Variables
ColorModel is the color model corresponding to the Native Client Color.
var ColorModel = image.ColorModelFunc(toColor)
func AudioStream
func AudioStream(data []uint16) (nextSize int, err os.Error)
AudioStream provides access to the audio device. Each call to AudioStream writes the given data, which should be a slice of 16-bit stereo PCM audio samples, and returns the number of samples required by the next call to AudioStream.
To find out the initial number of samples to write, call AudioStream(nil).
type Color
A Color represents a Native Client color value, a 32-bit R, G, B, A value packed as 0xAARRGGBB.
type Color uint32
func (Color) RGBA
func (p Color) RGBA() (r, g, b, a uint32)
type Image
An Image represents a Native Client frame buffer. The pixels in the image can be accessed as a single linear slice or as a two-dimensional slice of slices. Image implements image.Image.
type Image struct {
Linear []Color
Pixel [][]Color
}
func (*Image) At
func (m *Image) At(x, y int) image.Color
func (*Image) ColorModel
func (m *Image) ColorModel() image.ColorModel
func (*Image) Height
func (m *Image) Height() int
func (*Image) Set
func (m *Image) Set(x, y int, color image.Color)
func (*Image) Width
func (m *Image) Width() int
type Window
A Window represents a connection to the Native Client window. It implements draw.Context.
type Window struct {
Embedded bool // running as part of a web page?
*Image // screen image
// contains unexported fields
}
func Init
func Init(subsys int, dx, dy int) (*Window, os.Error)
Init initializes the Native Client subsystems specified by subsys. Init must be called before using any of the other functions in this package, and it must be called only once.
If the SubsystemVideo flag is set, Init requests a window of size dx×dy. When embedded in a web page, the web page's window specification overrides the parameters to Init, so the returned Window may have a different size than requested.
If the SubsystemAudio flag is set, Init requests a connection to the audio device carrying 44 kHz 16-bit stereo PCM audio samples.
func (*Window) FlushImage
func (w *Window) FlushImage()
func (*Window) KeyboardChan
func (w *Window) KeyboardChan() <-chan int
func (*Window) MouseChan
func (w *Window) MouseChan() <-chan draw.Mouse
func (*Window) QuitChan
func (w *Window) QuitChan() <-chan bool
func (*Window) ResizeChan
func (w *Window) ResizeChan() <-chan bool
func (*Window) Screen
func (w *Window) Screen() draw.Image