bbPlayMusic() + bbChannelVolume() bug

Archives Forums/Blitz3D SDK Bug Reports/bbPlayMusic() + bbChannelVolume() bug

Anatolie

(Posted 2009) [#1]

Hello,
I use DevCpp + Blitz3D SDK with following code

music_channel = bbPlayMusic("media/polka_anna.ogg");
if(music_channel==0) return 1;
bbChannelVolume( music_channel, 1.0 );

and there's no sound, but music_channel!=0.

When I use bbLoadSound()+bbPlaySound() with same file all OK, but too much memory used and too long time to start playing

I have tried convert OGG to WMA:

music_channel = bbPlayMusic("media/polka_anna.wma");
if(music_channel==0) return 1;
bbChannelVolume( music_channel, 1.0 );

and sound started, but I cannot change volume by bbChannelVolume, for example

bbChannelVolume( music_channel, 0.2 );

but the same function works fine with bbLoadSound()+bbPlaySound()

I have tried Blitz3DSDK v1.02, then v1.04beta4

How to solve it?

Giano

(Posted 2009) [#2]

Same problems...
I can't loop sounds and change the volume (using wav).

marksibly

(Posted 2009) [#3]

Hi,

I will be addressing some of the sound issues soon, but I strongly suggest that you using something like FMOD for audio instead.

This is actually what the original Blitz3D used, but I couldn't use it for the SDK due to licensing issues.

Anatolie

(Posted 2009) [#4]

Hi,

Now I use SDL_mixer. I's free, very simple and compatible with Blitz3D SDK.
Thank you for you answer, I hope my game with your wonderful SDK will be completed soon.

Kind regards,
Anatoly Borisov,
ToyCatSoft

Anatolie

(Posted 2010) [#5]

example of using SDL_mixer + Blitz3D SDK ( from Scissors Game ), IDE: DevCpp

file audio.h

// Simple sound layer based on SDL_mixer, oggvorbis
// 2010, Written by Anatoly Borisov for Scissors Game, feel free to use

#ifndef __AUDIO_H__
#define __AUDIO_H__

#include <windows.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <SDL/SDL.h>
#include <SDL/SDL_mixer.h> 


// example for load and play sound effect:

//
// #include "audio.h"
// ...
// audio_sound* snd = audio_load_sound("sample.ogg");

// audio_set_fx_volume(0.7);
// audio_play( snd );



//  music:
//        
// audio_set_music_volume(music_volume);

// audio_load_music("media/music/polka_anna.ogg");
// audio_play_music();



Mix_Music *audio_music=0;
HWND audio_hw;
int audio_flag=1; // flag for audio_init() call

void audio_message(char *s) { MessageBox(audio_hw,s,"audio.h",MB_OK); }

void audio_init() {
	audio_hw   = GetDesktopWindow();
	audio_flag = 0;
	char b[150];
	if(SDL_Init(SDL_INIT_AUDIO)) {
		sprintf(b,"Unable to initialize SDL: %s", SDL_GetError() );
		audio_message(b);
		return;
	}	

	if(Mix_OpenAudio(44100,AUDIO_S16,2,4096)) { // rate, stereo 16bit, channels, buffers
		audio_message("Unable open auidio!");
		return;
	}
	//Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
}

void audio_load_music(char *filename) {
	char b[100];
	if(audio_flag) audio_init();
	audio_music = Mix_LoadMUS(filename);
	if(!audio_music) {
		sprintf(b,"Cannot load music file '%s', %s",filename,Mix_GetError());
		audio_message(b);
		return;
	} 
}

void audio_play_music() {
	if(!audio_music) {
		audio_message("Cannot play music, music not loaded");
		return;
	} 
	Mix_PlayMusic(audio_music,0); // -1 for loop, 0 for once
}

void audio_play_music_loop() {
	if(!audio_music) {
		audio_message("Cannot play music, music not loaded");
		return;
	} 

	Mix_PlayMusic(audio_music,-1); // -1 for loop, 0 for once
}


void audio_stop_music() {
	if(!audio_music) {
		audio_message("Cannot stop music, music not loaded");
		return;
	} 

	Mix_HaltMusic();
}


void audio_free_music() {
	if(!audio_music) {
		audio_message("No music to free");
		return;
	}
	Mix_FreeMusic(audio_music);
	audio_music=NULL; // so we know we freed it...
}


// Returns: Zero if the music is not playing, or 1 if it is playing
int audio_playing_music() { return Mix_PlayingMusic(); }


// set music volume, from 0 to 1.0

void audio_set_music_volume( float volume ) {
	if(audio_flag) audio_init();
	Mix_VolumeMusic((int)((float)MIX_MAX_VOLUME*volume));
}


#define audio_sound Mix_Chunk

audio_sound* audio_load_sound(char *filename) {
	if(audio_flag) audio_init();
	return Mix_LoadWAV(filename);
}

float audio_fx_volume=1.0;

// play sound and return sound channel number

int audio_play(audio_sound* sound) {
	char b[120];
	if(audio_flag) audio_init();
	Mix_VolumeChunk(sound, (int)((float)MIX_MAX_VOLUME*audio_fx_volume)); // set volume
	int channel = Mix_PlayChannel(-1, sound, 0); //on first free ch., sound, once
	if(channel==-1) {
		sprintf(b,"audio_play() error: %s",Mix_GetError());
		// may be critical error, or maybe just no channels were free.
		audio_message(b);
		return 0;
	}
	return channel;
}

// stop all sound channels

void audio_stop() { Mix_HaltChannel(-1); }


// stop one sound channel

void audio_stop_channel(int channel) { Mix_HaltChannel(channel); }

// is sound channel playing? returns 1 if playing, 0 if not playing

int audio_channel_playing( int channel ) {
	return Mix_Playing(channel);
}


// set sound fx volume, from 0 to 1.0
void audio_set_fx_volume( float volume ) {
	if(audio_flag) audio_init();
	audio_fx_volume = volume;
}


// call it at end of program

void audio_end() {
	Mix_CloseAudio();
	SDL_Quit();
	audio_flag=1;
}

#endif