MP3 support not available

[shibingli]

package main

import (
	"log"

	"github.com/veandco/go-sdl2/sdl"
	"github.com/veandco/go-sdl2/mix"
)

func main() {
	if err := sdl.Init(sdl.INIT_AUDIO); err != nil {
		log.Println(err)
		return
	}
	defer sdl.Quit()

	if err := mix.Init(mix.INIT_MP3); err != nil {
		log.Println(err)
		return
	}
	defer mix.Quit()

	if err := mix.OpenAudio(22050, mix.DEFAULT_FORMAT, 2, 4096); err != nil {
		log.Println(err)
		return
	}
	defer mix.CloseAudio()

	if music, err := mix.LoadMUS("../../assets/test.mp3"); err != nil {
		log.Println(err)
	} else if err = music.Play(1); err != nil {
		log.Println(err)
	} else {
		sdl.Delay(5000)
		music.Free()
	}
}

Mac OS 10.13.2

brew install sdl2_mixer --with-flac --with-fluid-synth --with-libmikmod --with-libmodplug --with-smpeg2 --with-mpg123

[veeableful]

Hmm weird, it seems to not work on my Linux laptop too. I'll check on this more when I'm back from overseas.

[shibingli]

Thanks.

[veeableful]

It seems like sdl2_mixer 2.0.2's MP3 support is broken? When I reverted to 2.0.1 on both Linux and macOS, it seems to work.

on macOS, I had to checkout Homebrew's formula back to when sdl2_mixer was still 2.0.1. Something like this (assuming sdl2 and sdl2_mixer aren't installed yet):

1. cd $(brew --repo homebrew/core)
2. git checkout 956d9f
3. HOMEBREW_NO_AUTO_UPDATE=1 brew install sdl2_mixer --with-smpeg2
4. git checkout master

If everything performed successfully, you should be able to run the program with MP3 support.

[pgaskin]

Can confirm with OGG on Arch Linux. Downgrading worked.

[ryancheung]

@veeableful Thanks! You're really save me from dying of trying to figure out why MP3 not supported in macOS.

[ryancheung]

For the latest homebrew, run brew install sdl2_mixer --with-mpg123 can fix all these trouble.

[veeableful]

Thanks @ryancheung! I'll add that command to the README as alternate installation method for macOS, maybe eventually replace the current one.

[flipkick]

This behavior in sdl2_mixer 2.02 comes from a bug mentioned in: https://discourse.libsdl.org/t/bug-sdl2-mixer-init-error-format-support-not-available/23705/2

Workaround: Call Mix.OpenAudio before Mix.Init, like this:

package main

import (
	"log"

	"github.com/veandco/go-sdl2/sdl"
	"github.com/veandco/go-sdl2/mix"
)

func main() {
	if err := sdl.Init(sdl.INIT_AUDIO); err != nil {
		log.Println(err)
		return
	}
	defer sdl.Quit()

	if err := mix.OpenAudio(22050, mix.DEFAULT_FORMAT, 2, 4096); err != nil {
		log.Println(err)
		return
	}
	defer mix.CloseAudio()

	if err := mix.Init(mix.INIT_MP3); err != nil {
		log.Println(err)
		return
	}
	defer mix.Quit()

	if music, err := mix.LoadMUS("../../assets/test.mp3"); err != nil {
		log.Println(err)
	} else if err = music.Play(1); err != nil {
		log.Println(err)
	} else {
		sdl.Delay(5000)
		music.Free()
	}
}

[jdavid5815]

As of February 2019 brew on MacOS doesn't accept options anymore. To get mp3 support working, I had to do the following:

$ brew install mpg123
$ brew edit sdl2_mixer

Look for --disable-music-mp3-mpg123 and change this to --enable-music-mp3-mpg123

$ brew reinstall --build-from-source sdl2_mixer

That fixed it for me.

[mikedesu]

As of February 2019 brew on MacOS doesn't accept options anymore. To get mp3 support working, I had to do the following:

$ brew install mpg123
$ brew edit sdl2_mixer

Look for --disable-music-mp3-mpg123 and change this to --enable-music-mp3-mpg123

$ brew reinstall --build-from-source sdl2_mixer

That fixed it for me.

Dude yes!!! Thank you so much!!!