Digital sample routines

load_sample - Loads a sample from a file.
load_wav - Loads a sample from a RIFF WAV file.
load_wav_pf - Packfile version of load_wav.
load_voc - Loads a sample from a Creative Labs VOC file.
load_voc_pf - Packfile version of load_voc.
save_sample - Writes a sample into a file.
create_sample - Constructs a new sample structure of the specified type.
destroy_sample - Destroys a sample structure when you are done with it.
lock_sample - Locks all the memory used by a sample.
register_sample_file_type - Registers custom loading/saving sample routines.
play_sample - Plays a sample.
adjust_sample - Alters the parameters of a sample while it is playing.
stop_sample - Kills off a sample.

Voice control

If you need more detailed control over how samples are played, you can use the lower level voice functions rather than just calling play_sample(). This is rather more work, because you have to explicitly allocate and free the voices rather than them being automatically released when they finish playing, but allows far more precise specification of exactly how you want everything to sound. You may also want to modify a couple of fields from the SAMPLE structure. Read chapter "Structures and types defined by Allegro" for its definition.

allocate_voice - Allocates a soundcard voice for a sample.
deallocate_voice - Frees a soundcard voice.
reallocate_voice - Switches the sample of an already-allocated voice.
release_voice - Releases a soundcard voice.
voice_start - Activates a voice.
voice_stop - Stops a voice.
voice_set_priority - Sets the priority of a voice.
voice_check - Checks whether a voice is currently allocated.
voice_get_position - Returns the current position of a voice.
voice_set_position - Sets the position of a voice.
voice_set_playmode - Adjusts the loop status of the specified voice.
voice_get_volume - Returns the current volume of the voice.
voice_set_volume - Sets the volume of the voice.
voice_ramp_volume - Starts a volume ramp for a voice.
voice_stop_volumeramp - Interrupts a volume ramp operation.
voice_get_frequency - Returns the current pitch of the voice.
voice_set_frequency - Sets the pitch of the voice.
voice_sweep_frequency - Starts a frequency sweep for a voice.
voice_stop_frequency_sweep - Interrupts a frequency sweep operation.
voice_get_pan - Returns the current pan position.
voice_set_pan - Sets the pan position.
voice_sweep_pan - Starts a pan sweep for a voice.
voice_stop_pan_sweep - Interrupts a pan sweep operation.
voice_set_echo - Sets the echo parameters for a voice.
voice_set_tremolo - Sets the tremolo parameters for a voice.
voice_set_vibrato - Sets the vibrato parameters for a voice.

Allegro Manual

API

Digital sample routines

Voice control