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rockbox/firmware/export/pcm_sampr.h
Michael Sevakis e42a3194de AS3525v1/v2: 
Fix problems with volume of recorded material by converting 14-bit samples to
16-bit. Remove duplicate samples from recorded data and support proper
samplerate since ADC runs 1/2 the codec clock. Support monitoring mono on both
output channels by feeding data manually to I2SOUT under the right conditions.

DMA is no longer used for recording since frames must be processed as described
above but it does allow full-duplex audio.

Miscellaneous change includes a proper constant (HW_SAMPR_DEFAULT) to reset the
hardware samplerate when recording is closed. PP5024 and AS3525 have different
default recording rates (22kHz and 44kHz respectively) but both have half-speed
ADC.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31180 a1c6a512-1295-4272-9138-f99709370657
2011-12-08 19:20:00 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Michael Sevakis
*
* 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.
*
****************************************************************************/
#ifndef PCM_SAMPR_H
#define PCM_SAMPR_H
#ifndef HW_SAMPR_CAPS
#define HW_SAMPR_CAPS SAMPR_CAP_44 /* if not defined, default to 44100 */
#endif
/* These must be macros for comparison with SAMPR_CAP_* flags by the
preprocessor. Add samplerate index in descending order renumbering
the ones later in the list if any */
#define FREQ_96 0
#define FREQ_88 1
#define FREQ_64 2
#define FREQ_48 3
#define FREQ_44 4
#define FREQ_32 5
#define FREQ_24 6
#define FREQ_22 7
#define FREQ_16 8
#define FREQ_12 9
#define FREQ_11 10
#define FREQ_8 11
#define SAMPR_NUM_FREQ 12
/* sample rate values in HZ */
#define SAMPR_96 96000
#define SAMPR_88 88200
#define SAMPR_64 64000
#define SAMPR_48 48000
#define SAMPR_44 44100
#define SAMPR_32 32000
#define SAMPR_24 24000
#define SAMPR_22 22050
#define SAMPR_16 16000
#define SAMPR_12 12000
#define SAMPR_11 11025
#define SAMPR_8 8000
/* sample rate capability bits */
#define SAMPR_CAP_96 (1 << FREQ_96)
#define SAMPR_CAP_88 (1 << FREQ_88)
#define SAMPR_CAP_64 (1 << FREQ_64)
#define SAMPR_CAP_48 (1 << FREQ_48)
#define SAMPR_CAP_44 (1 << FREQ_44)
#define SAMPR_CAP_32 (1 << FREQ_32)
#define SAMPR_CAP_24 (1 << FREQ_24)
#define SAMPR_CAP_22 (1 << FREQ_22)
#define SAMPR_CAP_16 (1 << FREQ_16)
#define SAMPR_CAP_12 (1 << FREQ_12)
#define SAMPR_CAP_11 (1 << FREQ_11)
#define SAMPR_CAP_8 (1 << FREQ_8)
#define SAMPR_CAP_ALL (SAMPR_CAP_96 | SAMPR_CAP_88 | SAMPR_CAP_64 | \
SAMPR_CAP_48 | SAMPR_CAP_44 | SAMPR_CAP_32 | \
SAMPR_CAP_24 | SAMPR_CAP_22 | SAMPR_CAP_16 | \
SAMPR_CAP_12 | SAMPR_CAP_11 | SAMPR_CAP_8)
/* Master list of all "standard" rates supported. */
extern const unsigned long audio_master_sampr_list[SAMPR_NUM_FREQ];
/** Hardware sample rates **/
/* Enumeration of supported frequencies where 0 is the highest rate
supported and REC_NUM_FREQUENCIES is the number available */
enum hw_freq_indexes
{
__HW_FREQ_START_INDEX = -1, /* Make sure first in list is 0 */
/* 96000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_96) /* Macros and enums for each FREQ: */
HW_FREQ_96, /* Index in enumeration */
#define HW_HAVE_96 /* Defined if this FREQ is defined */
#define HW_HAVE_96_(...) __VA_ARGS__ /* Output its parameters for this FREQ */
#else
#define HW_HAVE_96_(...) /* Discards its parameters for this FREQ */
#endif
/* 88200 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_88)
HW_FREQ_88,
#define HW_HAVE_88
#define HW_HAVE_88_(...) __VA_ARGS__
#else
#define HW_HAVE_88_(...)
#endif
/* 64000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_64)
HW_FREQ_64,
#define HW_HAVE_64
#define HW_HAVE_64_(...) __VA_ARGS__
#else
#define HW_HAVE_64_(...)
#endif
/* 48000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_48)
HW_FREQ_48,
#define HW_HAVE_48
#define HW_HAVE_48_(...) __VA_ARGS__
#else
#define HW_HAVE_48_(...)
#endif
/* 44100 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_44)
HW_FREQ_44,
#define HW_HAVE_44
#define HW_HAVE_44_(...) __VA_ARGS__
#else
#define HW_HAVE_44_(...)
#endif
/* 32000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_32)
HW_FREQ_32,
#define HW_HAVE_32
#define HW_HAVE_32_(...) __VA_ARGS__
#else
#define HW_HAVE_32_(...)
#endif
/* 24000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_24)
HW_FREQ_24,
#define HW_HAVE_24
#define HW_HAVE_24_(...) __VA_ARGS__
#else
#define HW_HAVE_24_(...)
#endif
/* 22050 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_22)
HW_FREQ_22,
#define HW_HAVE_22
#define HW_HAVE_22_(...) __VA_ARGS__
#else
#define HW_HAVE_22_(...)
#endif
/* 16000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_16)
HW_FREQ_16,
#define HW_HAVE_16
#define HW_HAVE_16_(...) __VA_ARGS__
#else
#define HW_HAVE_16_(...)
#endif
/* 12000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_12)
HW_FREQ_12,
#define HW_HAVE_12
#define HW_HAVE_12_(...) __VA_ARGS__
#else
#define HW_HAVE_12_(...)
#endif
/* 11025 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_11)
HW_FREQ_11,
#define HW_HAVE_11
#define HW_HAVE_11_(...) __VA_ARGS__
#else
#define HW_HAVE_11_(...)
#endif
/* 8000 */
#if (HW_SAMPR_CAPS & SAMPR_CAP_8 )
HW_FREQ_8,
#define HW_HAVE_8
#define HW_HAVE_8_(...) __VA_ARGS__
#else
#define HW_HAVE_8_(...)
#endif
HW_NUM_FREQ,
HW_FREQ_DEFAULT = HW_FREQ_44,
HW_SAMPR_DEFAULT = SAMPR_44,
}; /* enum hw_freq_indexes */
/* list of hardware sample rates */
extern const unsigned long hw_freq_sampr[HW_NUM_FREQ];
#ifdef HAVE_RECORDING
/* Enumeration of supported frequencies where 0 is the highest rate
supported and REC_NUM_FREQUENCIES is the number available */
enum rec_freq_indexes
{
__REC_FREQ_START_INDEX = -1, /* Make sure first in list is 0 */
/* 96000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_96) /* Macros and enums for each FREQ: */
REC_FREQ_96, /* Index in enumeration */
#define REC_HAVE_96 /* Defined if this FREQ is defined */
#define REC_HAVE_96_(...) __VA_ARGS__ /* Output its parameters for this FREQ */
#else
#define REC_HAVE_96_(...) /* Discards its parameters for this FREQ */
#endif
/* 88200 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_88)
REC_FREQ_88,
#define REC_HAVE_88
#define REC_HAVE_88_(...) __VA_ARGS__
#else
#define REC_HAVE_88_(...)
#endif
/* 64000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_64)
REC_FREQ_64,
#define REC_HAVE_64
#define REC_HAVE_64_(...) __VA_ARGS__
#else
#define REC_HAVE_64_(...)
#endif
/* 48000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_48)
REC_FREQ_48,
#define REC_HAVE_48
#define REC_HAVE_48_(...) __VA_ARGS__
#else
#define REC_HAVE_48_(...)
#endif
/* 44100 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_44)
REC_FREQ_44,
#define REC_HAVE_44
#define REC_HAVE_44_(...) __VA_ARGS__
#else
#define REC_HAVE_44_(...)
#endif
/* 32000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_32)
REC_FREQ_32,
#define REC_HAVE_32
#define REC_HAVE_32_(...) __VA_ARGS__
#else
#define REC_HAVE_32_(...)
#endif
/* 24000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_24)
REC_FREQ_24,
#define REC_HAVE_24
#define REC_HAVE_24_(...) __VA_ARGS__
#else
#define REC_HAVE_24_(...)
#endif
/* 22050 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_22)
REC_FREQ_22,
#define REC_HAVE_22
#define REC_HAVE_22_(...) __VA_ARGS__
#else
#define REC_HAVE_22_(...)
#endif
/* 16000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_16)
REC_FREQ_16,
#define REC_HAVE_16
#define REC_HAVE_16_(...) __VA_ARGS__
#else
#define REC_HAVE_16_(...)
#endif
/* 12000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_12)
REC_FREQ_12,
#define REC_HAVE_12
#define REC_HAVE_12_(...) __VA_ARGS__
#else
#define REC_HAVE_12_(...)
#endif
/* 11025 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_11)
REC_FREQ_11,
#define REC_HAVE_11
#define REC_HAVE_11_(...) __VA_ARGS__
#else
#define REC_HAVE_11_(...)
#endif
/* 8000 */
#if (REC_SAMPR_CAPS & SAMPR_CAP_8 )
REC_FREQ_8,
#define REC_HAVE_8
#define REC_HAVE_8_(...) __VA_ARGS__
#else
#define REC_HAVE_8_(...)
#endif
REC_NUM_FREQ,
}; /* enum rec_freq_indexes */
/* Default to 44.1kHz if not otherwise specified */
#ifndef REC_FREQ_DEFAULT
#define REC_FREQ_DEFAULT REC_FREQ_44
#endif
#ifndef REC_SAMPR_DEFAULT
#define REC_SAMPR_DEFAULT SAMPR_44
#endif
#define HW_SAMPR_RESET 0
#define REC_FREQ_CFG_VAL_LIST &REC_HAVE_96_(",96") REC_HAVE_88_(",88") \
REC_HAVE_64_(",64") REC_HAVE_48_(",48") \
REC_HAVE_44_(",44") REC_HAVE_32_(",32") \
REC_HAVE_24_(",24") REC_HAVE_22_(",22") \
REC_HAVE_16_(",16") REC_HAVE_12_(",12") \
REC_HAVE_11_(",11") REC_HAVE_8_(",8")[1]
/* List of recording supported sample rates (set or subset of master list) */
extern const unsigned long rec_freq_sampr[REC_NUM_FREQ];
#endif /* HAVE_RECORDING */
#ifdef CONFIG_SAMPR_TYPES
#define SAMPR_TYPE_MASK (0xff << 24)
#define SAMPR_TYPE_PLAY (0x00 << 24)
#ifdef HAVE_RECORDING
#define SAMPR_TYPE_REC (0x01 << 24)
#endif
unsigned int pcm_sampr_to_hw_sampr(unsigned int samplerate,
unsigned int type);
#else /* ndef CONFIG_SAMPR_TYPES */
/* Types are ignored and == 0 */
#define SAMPR_TYPE_PLAY 0
#ifdef HAVE_RECORDING
#define SAMPR_TYPE_REC 0
#endif
#endif /* CONFIG_SAMPR_TYPES */
#endif /* PCM_SAMPR_H */
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