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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 by Bertrik Sikken
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "cpu.h"
#include "audio.h"
#include "audiohw.h"
#include "sound.h"
#include "general.h"
int audio_channels = 2;
#if CONFIG_CPU == AS3525
int audio_output_source = AUDIO_SRC_PLAYBACK;
#endif
void audio_set_output_source(int source)
{
bitset32(&CGU_PERI, CGU_I2SOUT_APB_CLOCK_ENABLE);
if ((unsigned)source >= AUDIO_NUM_SOURCES)
source = AUDIO_SRC_PLAYBACK;
bool loopback = source != AUDIO_SRC_PLAYBACK;
#if CONFIG_CPU == AS3525
loopback = loopback && audio_channels > 1;
audio_output_source = source;
#endif
if (loopback)
I2SOUT_CONTROL |= (1<<5); /* loopback from i2sin fifo */
else
I2SOUT_CONTROL &= ~(1<<5); /* normal i2sout */
}
void audio_input_mux(int source, unsigned flags)
{
static int last_source = AUDIO_SRC_PLAYBACK;
#if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
static bool last_recording = false;
const bool recording = flags & SRCF_RECORDING;
#else
(void) flags;
#endif
switch (source)
{
default: /* playback - no recording */
source = AUDIO_SRC_PLAYBACK;
case AUDIO_SRC_PLAYBACK:
if (source != last_source)
{
audio_channels = 2;
#if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
audiohw_set_monitor(false);
#endif
#ifdef HAVE_RECORDING
audiohw_disable_recording();
#endif
}
break;
#if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_MIC)
case AUDIO_SRC_MIC: /* recording only */
if (source != last_source)
{
audio_channels = 1;
audiohw_set_monitor(false);
audiohw_enable_recording(true); /* source mic */
}
break;
#endif
#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
case AUDIO_SRC_FMRADIO: /* recording and playback */
if (source == last_source
#ifdef HAVE_RECORDING
&& recording == last_recording
#endif
)
break;
audio_channels = 2;
#ifdef HAVE_RECORDING
last_recording = recording;
if (recording)
{
audiohw_set_monitor(false);
audiohw_enable_recording(false);
}
else
#endif
{
#ifdef HAVE_RECORDING
audiohw_disable_recording();
#endif
#if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
audiohw_set_monitor(true); /* line 2 analog audio path */
#endif
}
break;
#endif /* (INPUT_SRC_CAPS & SRC_CAP_FMRADIO) */
}
last_source = source;
#if CONFIG_CPU == AS3525
/* Sync on behalf of change in number of channels */
audio_set_output_source(audio_output_source);
#endif
}
#ifdef CONFIG_SAMPR_TYPES
unsigned int pcm_sampr_to_hw_sampr(unsigned int samplerate,
unsigned int type)
{
#ifdef HAVE_RECORDING
if (samplerate != HW_SAMPR_RESET && type == SAMPR_TYPE_REC)
{
/* Check if the samplerate is in the list of recordable rates.
* Fail to default if not */
int index = round_value_to_list32(samplerate, rec_freq_sampr,
REC_NUM_FREQ, false);
if (samplerate != rec_freq_sampr[index])
samplerate = REC_SAMPR_DEFAULT;
samplerate *= 2; /* Recording rates are 1/2 the codec clock */
}
#endif /* HAVE_RECORDING */
return samplerate;
(void)type;
}
#endif /* CONFIG_SAMPR_TYPES */
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