/
main.go
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/
main.go
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/*
* main.go
*
* Copyright 2019-2024 Dariusz Sikora <ds@isangeles.dev>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
*/
// Example of using audio player.
package main
import (
"fmt"
"os"
"golang.org/x/image/colornames"
"github.com/gopxl/pixel"
"github.com/gopxl/pixel/pixelgl"
"github.com/gopxl/beep"
"github.com/gopxl/beep/vorbis"
"github.com/isangeles/mtk"
)
// Main function.
func main () {
// Run Pixel graphic.
pixelgl.Run(run)
}
// All window code fired from there.
func run() {
// Create Pixel window configuration.
cfg := pixelgl.WindowConfig{
Title: "MTK audio example",
Bounds: pixel.R(0, 0, 1600, 900),
}
// Create MTK warpper for Pixel window.
win, err := mtk.NewWindow(cfg)
if err != nil {
panic(fmt.Errorf("Unable to create MTK window: %v", err))
}
// Create audio player.
audioFormat := beep.Format{44100, 2, 2}
err = mtk.InitAudio(audioFormat)
if err != nil {
panic(fmt.Sprintf("Unable to init MTK audio: %v", err))
}
audio := mtk.NewAudioPlayer()
// Load example music.
music, err := audioBuffer("../res/music.ogg")
if err != nil {
panic(fmt.Sprintf("Unable to load example music: %v", err))
}
// Play music.
audio.AddAudio(music)
audio.ResumePlaylist()
// Main loop.
for !win.Closed() {
// Clear window.
win.Clear(colornames.Black)
// Update.
win.Update()
}
}
// audioBuffer loads vorbis(.ogg) file with specified path.
func audioBuffer(path string) (*beep.Buffer, error) {
file, err := os.Open(path)
if err != nil {
return nil, fmt.Errorf("Unable to open file: %v", err)
}
defer file.Close()
stream, format, err := vorbis.Decode(file)
if err != nil {
return nil, fmt.Errorf("Unable to decode vorbis data: %v", err)
}
buffer := beep.NewBuffer(format)
buffer.Append(stream)
return buffer, nil
}