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Code Issues Releases Wiki Activity

Don't always reallocate memory to store ascii chars

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This commit is contained in:
Yohann D'ANELLO 2020-10-14 17:10:31 +02:00
parent 36a890a914
commit f21ad568cc
1 changed files with 4 additions and 7 deletions
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11
stream/telnet/telnet.go
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@ -15,6 +15,8 @@ var (
Cfg *Options
currentMessage map[string]*string
clientCount map[string]int
ASCIICHARS = []byte{' ', '.', ',', ':', ';', '+', '*', '?', '%', '$', '#', '@'}
)
// Options holds telnet package configuration
@ -128,11 +130,6 @@ func GetNumberConnectedSessions(streamID string) int {
return clientCount[streamID]
}
func asciiChar(pixel byte) byte {
asciiChars := []byte{'@', '#', '$', '%', '?', '*', '+', ';', ':', ',', '.', ' '}
return asciiChars[(255-pixel)/22]
}
// StartASCIIArtStream send all packets received by ffmpeg as ASCII Art to telnet clients
func StartASCIIArtStream(streamID string, reader io.ReadCloser) {
if !Cfg.Enabled {
@ -164,8 +161,8 @@ func StartASCIIArtStream(streamID string, reader io.ReadCloser) {
// Convert image to ASCII
for j := 0; j < Cfg.Height; j++ {
for i := 0; i < Cfg.Width; i++ {
textBuff.WriteByte(asciiChar(pixelBuff[Cfg.Width*j+i]))
textBuff.WriteByte(asciiChar(pixelBuff[Cfg.Width*j+i]))
textBuff.WriteByte(ASCIICHARS[pixelBuff[Cfg.Width*j+i]/22])
textBuff.WriteByte(ASCIICHARS[pixelBuff[Cfg.Width*j+i]/22])
}
textBuff.WriteByte('\n')
}