[A5] Audio Streams

Desmond Taylor

I have read the manual over and over for audio streams and cannot work it out at all. Can someone link me to a tutorial or write me a basic one that I can start from. I learn quickly so a short example can do the trick. I do however wan't to use streams as I only want the sounds for SFX and Music.

Thanks in advance since Im going out soon.

Evert

Have you taken a look at the examples that come with Allegro?

Desmond Taylor

I have downloaded the Binary. There is no examples :/

Edit: I've tried ALLEGRO_SAMPLE too and still no joy. Here's my test class.

#SelectExpand
  1/**
  2# The header contains all the headers needed for allegro.
  3: allegro.h
  4: allegro_image.h
  5: allegro_font.h
  6: allegro_ttf.h
  7: allegro_audio.h
  8: allegro_acodec.h
  9**/
 10#include "audio.hpp"
 11
 12ALLEGRO_SAMPLE* sample;
 13
 14Audio::Audio()
 15{
 16    al_install_audio();
 17    al_init_acodec_addon();
 18
 19    sample = al_load_sample( "sfx/sfx002.wav" );
 20    if ( !sample ) printf( "Not Loaded!\n" ); // It does load as this isn't printed to the console.
 21}
 22
 23Audio::~Audio()
 24{
 25    al_destroy_sample( sample );
 26
 27    al_uninstall_audio();
 28}
 29
 30void Audio::play()
 31{
 32    float gain = 1.0;                               // Normal Gain
 33    float pan = 0.0;                                // Centered
 34    float speed = 1.0;                              // Normal Speed
 35    ALLEGRO_PLAYMODE loop = ALLEGRO_PLAYMODE_ONCE;  // Only play once.
 36
 37    // Now pass the values into al_play_sample()
 38    al_play_sample( sample, gain, pan, speed, loop, NULL );
 39}

Edit 2

It fails to play I've added this and it fails

#SelectExpand
  1void Audio::play()
  2{
  3    float gain = 1.0;                               // Normal Gain
  4    float pan = 0.0;                                // Centered
  5    float speed = 1.0;                              // Normal Speed
  6    ALLEGRO_PLAYMODE loop = ALLEGRO_PLAYMODE_ONCE;  // Only play once.
  7
  8    // Now pass the values into al_play_sample()
  9    if ( !al_play_sample( sample, gain, pan, speed, loop, NULL ) )
 10        printf( "Failed to play sample!\n" );
 11    else
 12        printf( "Playing sample!\n" );
 13}

Matthew Leverton

You need to call al_reserve_samples(). Download the source package and check out the examples folder.

Desmond Taylor

Funny enough I was just reading that in the manual and I was just about to post on here saying I missed out al_reserve_samples() but thanks anyway's it's now working

Thread #606698. Printed from Allegro.cc