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rockbox/firmware/export/pcm_sampr.h
Michael Sevakis d37bf24d90 Enable setting of global output samplerate on certain targets. 
Replaces the NATIVE_FREQUENCY constant with a configurable frequency.

The user may select 48000Hz if the hardware supports it. The default is
still 44100Hz and the minimum is 44100Hz. The setting is located in the
playback settings, under "Frequency".

"Frequency" was duplicated in english.lang for now to avoid having to
fix every .lang file for the moment and throwing everything out of sync
because of the new play_frequency feature in features.txt. The next
cleanup should combine it with the one included for recording and
generalize the ID label.

If the hardware doesn't support 48000Hz, no setting will be available.

On particular hardware where very high rates are practical and desireable,
the upper bound can be extended by patching.

The PCM mixer can be configured to play at the full hardware frequency
range. The DSP core can configure to the hardware minimum up to the
maximum playback setting (some buffers must be reserved according to
the maximum rate).

If only 44100Hz is supported or possible on a given target for playback,
using the DSP and mixer at other samperates is possible if the hardware
offers them.

Change-Id: I6023cf0c0baa8bc6292b6919b4dd3618a6a25622
Reviewed-on: http://gerrit.rockbox.org/479
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested-by: Michael Sevakis <jethead71@rockbox.org>
2013-07-06 04:22:04 +02:00

390 lines
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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
/* File might be included for CPP config macros only. Allow it to be included
* again for full C declarations. */
#ifndef PCM_SAMPR_CONFIG_ONLY
#define PCM_SAMPR_H
#endif
#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)
#ifndef PCM_SAMPR_CONFIG_ONLY
/* Master list of all "standard" rates supported. */
extern const unsigned long audio_master_sampr_list[SAMPR_NUM_FREQ];
#endif /* PCM_SAMPR_CONFIG_ONLY */
/** Hardware sample rates **/
#ifndef PCM_SAMPR_CONFIG_ONLY
/* 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,
}; /* enum hw_freq_indexes */
/* list of hardware sample rates */
extern const unsigned long hw_freq_sampr[HW_NUM_FREQ];
#endif /* PCM_SAMPR_CONFIG_ONLY */
#define HW_FREQ_DEFAULT HW_FREQ_44
#define HW_SAMPR_DEFAULT SAMPR_44
#if HW_SAMPR_CAPS & SAMPR_CAP_96
# define HW_SAMPR_MAX SAMPR_96
#elif HW_SAMPR_CAPS & SAMPR_CAP_88
# define HW_SAMPR_MAX SAMPR_88
#elif HW_SAMPR_CAPS & SAMPR_CAP_64
# define HW_SAMPR_MAX SAMPR_64
#elif HW_SAMPR_CAPS & SAMPR_CAP_48
# define HW_SAMPR_MAX SAMPR_48
#else
# define HW_SAMPR_MAX SAMPR_44
#endif
#if HW_SAMPR_CAPS & SAMPR_CAP_8
# define HW_SAMPR_MIN SAMPR_8
#elif HW_SAMPR_CAPS & SAMPR_CAP_11
# define HW_SAMPR_MIN SAMPR_11
#elif HW_SAMPR_CAPS & SAMPR_CAP_12
# define HW_SAMPR_MIN SAMPR_12
#elif HW_SAMPR_CAPS & SAMPR_CAP_16
# define HW_SAMPR_MIN SAMPR_16
#elif HW_SAMPR_CAPS & SAMPR_CAP_22
# define HW_SAMPR_MIN SAMPR_22
#elif HW_SAMPR_CAPS & SAMPR_CAP_24
# define HW_SAMPR_MIN SAMPR_24
#elif HW_SAMPR_CAPS & SAMPR_CAP_32
# define HW_SAMPR_MIN SAMPR_32
#else
# define HW_SAMPR_MIN SAMPR_44
#endif
#ifdef HAVE_RECORDING
#ifndef PCM_SAMPR_CONFIG_ONLY
/* 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 */
/* List of recording supported sample rates (set or subset of master list) */
extern const unsigned long rec_freq_sampr[REC_NUM_FREQ];
#endif /* PCM_SAMPR_CONFIG_ONLY */
/* 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]
#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
#ifndef PCM_SAMPR_CONFIG_ONLY
unsigned int pcm_sampr_to_hw_sampr(unsigned int samplerate,
unsigned int type);
#endif
#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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