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/* Shows the ability to play a sample without a mixer. */
#include <stdio.h>
#include "allegro5/allegro.h"
#include "allegro5/allegro_audio.h"
#include "allegro5/allegro_acodec.h"
#include "common.c"
char *default_files[] = {NULL, "data/welcome.wav"};
int main(int argc, char **argv)
{
ALLEGRO_VOICE *voice;
ALLEGRO_SAMPLE_INSTANCE *sample;
int i;
if (!al_init()) {
abort_example("Could not init Allegro.\n");
}
open_log();
if (argc < 2) {
log_printf("This example can be run from the command line.\nUsage: %s {audio_files}\n", argv[0]);
argv = default_files;
argc = 2;
}
al_init_acodec_addon();
if (!al_install_audio()) {
abort_example("Could not init sound!\n");
}
for (i = 1; i < argc; ++i) {
ALLEGRO_SAMPLE *sample_data = NULL;
const char *filename = argv[i];
ALLEGRO_CHANNEL_CONF chan;
ALLEGRO_AUDIO_DEPTH depth;
unsigned long freq;
float sample_time = 0;
/* Load the entire sound file from disk. */
sample_data = al_load_sample(filename);
if (!sample_data) {
log_printf("Could not load sample from '%s'!\n",
filename);
continue;
}
sample = al_create_sample_instance(NULL);
if (!sample) {
abort_example("al_create_sample failed.\n");
}
if (!al_set_sample(sample, sample_data)) {
log_printf("al_set_sample failed.\n");
continue;
}
depth = al_get_sample_instance_depth(sample);
chan = al_get_sample_instance_channels(sample);
freq = al_get_sample_instance_frequency(sample);
log_printf("Loaded sample: %i-bit depth, %i channels, %li Hz\n",
(depth < 8) ? (8+depth*8) : 0, (chan>>4)+(chan%0xF), freq);
log_printf("Trying to create a voice with the same specs... ");
voice = al_create_voice(freq, depth, chan);
if (!voice) {
abort_example("Could not create ALLEGRO_VOICE.\n");
}
log_printf("done.\n");
if (!al_attach_sample_instance_to_voice(sample, voice)) {
abort_example("al_attach_sample_instance_to_voice failed.\n");
}
/* Play sample in looping mode. */
al_set_sample_instance_playmode(sample, ALLEGRO_PLAYMODE_LOOP);
al_play_sample_instance(sample);
sample_time = al_get_sample_instance_time(sample);
log_printf("Playing '%s' (%.3f seconds) 3 times", filename,
sample_time);
al_rest(sample_time * 3);
al_stop_sample_instance(sample);
log_printf("\n");
/* Free the memory allocated. */
al_set_sample(sample, NULL);
al_destroy_sample(sample_data);
al_destroy_sample_instance(sample);
al_destroy_voice(voice);
}
al_uninstall_audio();
close_log(true);
return 0;
}
/* vim: set sts=3 sw=3 et: */
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