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/* Copyright (C) 2005-2021 Joël Krähemann
* Permission is granted to copy, distribute and/or modify this document
* under the terms of the GNU Free Documentation License, Version 1.3
* or any later version published by the Free Software Foundation;
* with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
* A copy of the license is included in the section entitled "GNU
* Free Documentation License".
*/
#include <glib.h>
#include <glib-object.h>
#include <ags/libags.h>
#include <ags/libags-audio.h>
AgsApplicationContext *application_context;
GObject *soundcard;
AgsSynthUtil synth_util;
GList *start_list;
void *buffer;
guint audio_channels;
guint samplerate;
guint buffer_length;
guint format;
application_context = ags_application_context_get_instance();
start_list = ags_sound_provider_get_soundcard(AGS_SOUND_PROVIDER(application_context));
if(start_list != NULL){
soundcard = G_OBJECT(start_list->data);
if(ags_soundcard_is_playing(AGS_SOUNDCARD(soundcard))){
buffer = ags_soundcard_get_buffer(AGS_SOUNDCARD(soundcard));
ags_soundcard_get_presets(AGS_SOUNDCARD(soundcard),
&audio_channels,
&samplerate,
&buffer_length,
&format);
synth_util.source = buffer;
synth_util.source_stride = audio_channels;
synth_util.buffer_length = buffer_length;
synth_util.audio_buffer_util_format = ags_audio_buffer_util_format_from_soundcard(format);
synth_util.samplerate = samplerate;
synth_util.synth_oscillator_mode = AGS_SYNTH_OSCILLATOR_SIN;
synth_util.frequency = 440.0;
synth_util.phase = 0.0;
synth_util.volume = 1.0;
synth_util.frame_count = buffer_length;
synth_util.offset = 0;
ags_soundcard_lock_buffer(AGS_SOUNDCARD(soundcard),
buffer);
ags_synth_util_compute_sin(&synth_util);
ags_soundcard_unlock_buffer(AGS_SOUNDCARD(soundcard),
buffer);
}
}
g_list_free_full(start_list,
(GDestroyNotify) g_object_unref);
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