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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file src/gaudout/gaudout.c
* @brief GAUDOUT sub-system code.
*
* @addtogroup GAUDOUT
* @{
*/
#include "gfx.h"
#if GFX_USE_GAUDOUT || defined(__DOXYGEN__)
#include "src/gaudout/driver.h"
static gfxQueueASync playlist;
static gfxQueueGSync freelist;
static uint16_t audFlags;
#define AUDOUTFLG_RUNNING 0x0001
#define AUDOUTFLG_USE_EVENTS 0x0002
#if GFX_USE_GEVENT
static GTimer AudGTimer;
static void AudGTimerCallback(void *param) {
(void) param;
GSourceListener *psl;
GEventADC *pe;
psl = 0;
while ((psl = geventGetSourceListener((GSourceHandle)(&aud), psl))) {
if (!(pe = (GEventAudioIn *)geventGetEventBuffer(psl))) {
// This listener is missing - save this.
psl->srcflags |= GAUDIN_LOSTEVENT;
continue;
}
pe->type = GEVENT_AUDIO_IN;
pe->channel = aud.channel;
pe->count = lastcount;
pe->buffer = lastbuffer;
pe->flags = psl->srcflags;
psl->srcflags = 0;
geventSendEvent(psl);
}
}
#endif
void _gaudoutInit(void)
{
gfxQueueASyncInit(&playlist);
gfxQueueGSyncInit(&freelist);
}
void _gaudoutDeinit(void)
{
/* ToDo */
}
bool_t gaudioAllocBuffers(unsigned num, size_t size) {
GAudioData *paud;
if (num < 1)
return FALSE;
// Round up to a multiple of 4 to prevent problems with structure alignment
size = (size + 3) & ~0x03;
// Allocate the memory
if (!(paud = gfxAlloc((size+sizeof(GAudioData)) * num)))
return FALSE;
// Add each of them to our free list
for(;num--; paud = (GAudioData *)((char *)(paud+1)+size)) {
paud->size = size;
gfxQueueGSyncPut(&freelist, (gfxQueueGSyncItem *)paud);
}
return TRUE;
}
void gaudioReleaseBuffer(GAudioData *paud) {
gfxQueueGSyncPut(&freelist, (gfxQueueGSyncItem *)paud);
}
GAudioData *gaudioGetBuffer(delaytime_t ms) {
return (GAudioData *)gfxQueueGSyncGet(&freelist, ms);
}
bool_t gaudioPlayInit(uint16_t channel, uint32_t frequency, ArrayDataFormat format) {
gaudioPlayStop();
gaudout_lld_deinit();
return gaudout_lld_init(channel, frequency, format);
}
void gaudioPlay(GAudioData *paud) {
if (paud)
gfxQueueASyncPut(&playlist, (gfxQueueASyncItem *)paud);
gaudout_lld_start();
}
void gaudioPlayPause(void) {
gaudout_lld_stop();
}
void gaudioPlayStop(void) {
GAudioData *paud;
gaudout_lld_stop();
while((paud = (GAudioData *)gfxQueueASyncGet(&playlist)))
gfxQueueGSyncPut(&freelist, (gfxQueueGSyncItem *)paud);
}
bool_t gaudioPlaySetVolume(uint8_t vol) {
return gaudout_lld_set_volume(vol);
}
/**
* Routines provided for use by drivers.
*/
GAudioData *gaudoutGetDataBlockI(void) {
return (GAudioData *)gfxQueueASyncGetI(&playlist);
}
void gaudoutReleaseDataBlockI(GAudioData *paud) {
gfxQueueGSyncPutI(&freelist, (gfxQueueGSyncItem *)paud);
}
#endif /* GFX_USE_GAUDOUT */
/** @} */
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