/
video.go
252 lines (218 loc) · 5.44 KB
/
video.go
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package nes
import (
"bufio"
"fmt"
"image"
"image/color"
"image/gif"
"image/jpeg"
"os"
)
type Video interface {
Input() chan []uint8
Events() chan Event
Run()
SetCaption(caption string)
}
var RGBAPalette []color.Color = []color.Color{
color.RGBA{0x66, 0x66, 0x66, 0xff},
color.RGBA{0x00, 0x2A, 0x88, 0xff},
color.RGBA{0x14, 0x12, 0xA7, 0xff},
color.RGBA{0x3B, 0x00, 0xA4, 0xff},
color.RGBA{0x5C, 0x00, 0x7E, 0xff},
color.RGBA{0x6E, 0x00, 0x40, 0xff},
color.RGBA{0x6C, 0x06, 0x00, 0xff},
color.RGBA{0x56, 0x1D, 0x00, 0xff},
color.RGBA{0x33, 0x35, 0x00, 0xff},
color.RGBA{0x0B, 0x48, 0x00, 0xff},
color.RGBA{0x00, 0x52, 0x00, 0xff},
color.RGBA{0x00, 0x4F, 0x08, 0xff},
color.RGBA{0x00, 0x40, 0x4D, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0xAD, 0xAD, 0xAD, 0xff},
color.RGBA{0x15, 0x5F, 0xD9, 0xff},
color.RGBA{0x42, 0x40, 0xFF, 0xff},
color.RGBA{0x75, 0x27, 0xFE, 0xff},
color.RGBA{0xA0, 0x1A, 0xCC, 0xff},
color.RGBA{0xB7, 0x1E, 0x7B, 0xff},
color.RGBA{0xB5, 0x31, 0x20, 0xff},
color.RGBA{0x99, 0x4E, 0x00, 0xff},
color.RGBA{0x6B, 0x6D, 0x00, 0xff},
color.RGBA{0x38, 0x87, 0x00, 0xff},
color.RGBA{0x0C, 0x93, 0x00, 0xff},
color.RGBA{0x00, 0x8F, 0x32, 0xff},
color.RGBA{0x00, 0x7C, 0x8D, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0xFF, 0xFE, 0xFF, 0xff},
color.RGBA{0x64, 0xB0, 0xFF, 0xff},
color.RGBA{0x92, 0x90, 0xFF, 0xff},
color.RGBA{0xC6, 0x76, 0xFF, 0xff},
color.RGBA{0xF3, 0x6A, 0xFF, 0xff},
color.RGBA{0xFE, 0x6E, 0xCC, 0xff},
color.RGBA{0xFE, 0x81, 0x70, 0xff},
color.RGBA{0xEA, 0x9E, 0x22, 0xff},
color.RGBA{0xBC, 0xBE, 0x00, 0xff},
color.RGBA{0x88, 0xD8, 0x00, 0xff},
color.RGBA{0x5C, 0xE4, 0x30, 0xff},
color.RGBA{0x45, 0xE0, 0x82, 0xff},
color.RGBA{0x48, 0xCD, 0xDE, 0xff},
color.RGBA{0x4F, 0x4F, 0x4F, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0xFF, 0xFE, 0xFF, 0xff},
color.RGBA{0xC0, 0xDF, 0xFF, 0xff},
color.RGBA{0xD3, 0xD2, 0xFF, 0xff},
color.RGBA{0xE8, 0xC8, 0xFF, 0xff},
color.RGBA{0xFB, 0xC2, 0xFF, 0xff},
color.RGBA{0xFE, 0xC4, 0xEA, 0xff},
color.RGBA{0xFE, 0xCC, 0xC5, 0xff},
color.RGBA{0xF7, 0xD8, 0xA5, 0xff},
color.RGBA{0xE4, 0xE5, 0x94, 0xff},
color.RGBA{0xCF, 0xEF, 0x96, 0xff},
color.RGBA{0xBD, 0xF4, 0xAB, 0xff},
color.RGBA{0xB3, 0xF3, 0xCC, 0xff},
color.RGBA{0xB5, 0xEB, 0xF2, 0xff},
color.RGBA{0xB8, 0xB8, 0xB8, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
color.RGBA{0x00, 0x00, 0x00, 0xff},
}
type Recorder interface {
Input() chan []uint8
Record()
Stop()
Quit()
Run()
}
type JPEGRecorder struct {
frame *image.Paletted
palette []color.Color
input chan []uint8
recording bool
stop chan uint8
}
func NewJPEGRecorder() (video *JPEGRecorder, err error) {
video = &JPEGRecorder{
frame: nil,
input: make(chan []uint8),
palette: RGBAPalette,
stop: make(chan uint8),
}
return
}
func (video *JPEGRecorder) Input() chan []uint8 {
return video.input
}
func (video *JPEGRecorder) Record() {
if video.frame != nil {
fo, _ := os.Create(fmt.Sprintf("frame.jpg"))
w := bufio.NewWriter(fo)
jpeg.Encode(w, video.frame, &jpeg.Options{Quality: 100})
fmt.Println("*** Screenshot saved")
}
video.frame = image.NewPaletted(image.Rect(0, 0, 256, 240), video.palette)
}
func (video *JPEGRecorder) Stop() {
video.frame = image.NewPaletted(image.Rect(0, 0, 256, 240), video.palette)
}
func (video *JPEGRecorder) Quit() {
video.stop <- 1
<-video.stop
}
func (video *JPEGRecorder) Run() {
video.frame = image.NewPaletted(image.Rect(0, 0, 256, 240), video.palette)
for {
select {
case colors := <-video.input:
if video.frame == nil {
continue
}
x, y := 0, 0
for _, c := range colors {
video.frame.Set(x, y, video.palette[c])
switch x {
case 255:
x = 0
y++
default:
x++
}
}
case <-video.stop:
video.stop <- 1
break
}
}
}
type GIFRecorder struct {
gif *gif.GIF
palette []color.Color
input chan []uint8
stop chan uint8
}
func NewGIFRecorder() (video *GIFRecorder, err error) {
video = &GIFRecorder{
gif: nil,
input: make(chan []uint8),
palette: RGBAPalette,
stop: make(chan uint8),
}
return
}
func (video *GIFRecorder) Input() chan []uint8 {
return video.input
}
func (video *GIFRecorder) Record() {
fmt.Println("*** Recording started")
video.gif = &gif.GIF{
Image: []*image.Paletted{},
Delay: []int{},
LoopCount: 0xfffffff,
}
}
func (video *GIFRecorder) Stop() {
if video.gif != nil {
fmt.Println("*** Recording stopped")
fo, _ := os.Create(fmt.Sprintf("frame.gif"))
w := bufio.NewWriter(fo)
gif.EncodeAll(w, video.gif)
video.gif = nil
}
}
func (video *GIFRecorder) Quit() {
video.stop <- 1
<-video.stop
}
func (video *GIFRecorder) Run() {
for {
select {
case colors := <-video.input:
if video.gif == nil {
continue
}
frame := image.NewPaletted(image.Rect(0, 0, 256, 240), video.palette)
x, y := 0, 0
for _, c := range colors {
frame.Set(x, y, video.palette[c])
switch x {
case 255:
x = 0
y++
default:
x++
}
}
video.gif.Image = append(video.gif.Image, frame)
video.gif.Delay = append(video.gif.Delay, 3)
case <-video.stop:
video.stop <- 1
break
}
}
}
func pixelInFrame(x, y int, overscan bool) bool {
return !overscan || (y >= 8 && y <= 231 && x >= 8 && x <= 247)
}