diff options
Diffstat (limited to 'pd/portaudio/pa_common/pa_converters.c')
| -rw-r--r-- | pd/portaudio/pa_common/pa_converters.c | 1926 |
1 files changed, 0 insertions, 1926 deletions
diff --git a/pd/portaudio/pa_common/pa_converters.c b/pd/portaudio/pa_common/pa_converters.c deleted file mode 100644 index a7e3a06c..00000000 --- a/pd/portaudio/pa_common/pa_converters.c +++ /dev/null @@ -1,1926 +0,0 @@ -/* - * $Id: pa_converters.c,v 1.1.2.27 2005/11/02 12:14:07 rossbencina Exp $ - * Portable Audio I/O Library sample conversion mechanism - * - * Based on the Open Source API proposed by Ross Bencina - * Copyright (c) 1999-2002 Phil Burk, Ross Bencina - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files - * (the "Software"), to deal in the Software without restriction, - * including without limitation the rights to use, copy, modify, merge, - * publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * Any person wishing to distribute modifications to the Software is - * requested to send the modifications to the original developer so that - * they can be incorporated into the canonical version. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF - * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/** @file - @brief Conversion functions implementations. - - If the C9x function lrintf() is available, define PA_USE_C99_LRINTF to use it - - @todo Consider whether functions which dither but don't clip should exist, - V18 automatically enabled clipping whenever dithering was selected. Perhaps - we should do the same. - - @todo implement the converters marked IMPLEMENT ME: Float32_To_UInt8_Dither, - Float32_To_UInt8_Clip, Float32_To_UInt8_DitherClip, Int32_To_Int24_Dither, - Int32_To_UInt8_Dither, Int24_To_Int16_Dither, Int24_To_Int8_Dither, - Int24_To_UInt8_Dither, Int16_To_Int8_Dither, Int16_To_UInt8_Dither, - - @todo review the converters marked REVIEW: Float32_To_Int32, - Float32_To_Int32_Dither, Float32_To_Int32_Clip, Float32_To_Int32_DitherClip, - Int32_To_Int16_Dither, Int32_To_Int8_Dither, Int16_To_Int32 -*/ - - -#include "pa_converters.h" -#include "pa_dither.h" -#include "pa_endianness.h" -#include "pa_types.h" - - -PaSampleFormat PaUtil_SelectClosestAvailableFormat( - PaSampleFormat availableFormats, PaSampleFormat format ) -{ - PaSampleFormat result; - - format &= ~paNonInterleaved; - availableFormats &= ~paNonInterleaved; - - if( (format & availableFormats) == 0 ) - { - /* NOTE: this code depends on the sample format constants being in - descending order of quality - ie best quality is 0 - FIXME: should write an assert which checks that all of the - known constants conform to that requirement. - */ - - if( format != 0x01 ) - { - /* scan for better formats */ - result = format; - do - { - result >>= 1; - } - while( (result & availableFormats) == 0 && result != 0 ); - } - else - { - result = 0; - } - - if( result == 0 ){ - /* scan for worse formats */ - result = format; - do - { - result <<= 1; - } - while( (result & availableFormats) == 0 && result != paCustomFormat ); - - if( (result & availableFormats) == 0 ) - result = paSampleFormatNotSupported; - } - - }else{ - result = format; - } - - return result; -} - -/* -------------------------------------------------------------------------- */ - -#define PA_SELECT_FORMAT_( format, float32, int32, int24, int16, int8, uint8 ) \ - switch( format & ~paNonInterleaved ){ \ - case paFloat32: \ - float32 \ - case paInt32: \ - int32 \ - case paInt24: \ - int24 \ - case paInt16: \ - int16 \ - case paInt8: \ - int8 \ - case paUInt8: \ - uint8 \ - default: return 0; \ - } - -/* -------------------------------------------------------------------------- */ - -#define PA_SELECT_CONVERTER_DITHER_CLIP_( flags, source, destination ) \ - if( flags & paClipOff ){ /* no clip */ \ - if( flags & paDitherOff ){ /* no dither */ \ - return paConverters. source ## _To_ ## destination; \ - }else{ /* dither */ \ - return paConverters. source ## _To_ ## destination ## _Dither; \ - } \ - }else{ /* clip */ \ - if( flags & paDitherOff ){ /* no dither */ \ - return paConverters. source ## _To_ ## destination ## _Clip; \ - }else{ /* dither */ \ - return paConverters. source ## _To_ ## destination ## _DitherClip; \ - } \ - } - -/* -------------------------------------------------------------------------- */ - -#define PA_SELECT_CONVERTER_DITHER_( flags, source, destination ) \ - if( flags & paDitherOff ){ /* no dither */ \ - return paConverters. source ## _To_ ## destination; \ - }else{ /* dither */ \ - return paConverters. source ## _To_ ## destination ## _Dither; \ - } - -/* -------------------------------------------------------------------------- */ - -#define PA_USE_CONVERTER_( source, destination )\ - return paConverters. source ## _To_ ## destination; - -/* -------------------------------------------------------------------------- */ - -#define PA_UNITY_CONVERSION_( wordlength )\ - return paConverters. Copy_ ## wordlength ## _To_ ## wordlength; - -/* -------------------------------------------------------------------------- */ - -PaUtilConverter* PaUtil_SelectConverter( PaSampleFormat sourceFormat, - PaSampleFormat destinationFormat, PaStreamFlags flags ) -{ - PA_SELECT_FORMAT_( sourceFormat, - /* paFloat32: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_UNITY_CONVERSION_( 32 ), - /* paInt32: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int32 ), - /* paInt24: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int24 ), - /* paInt16: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int16 ), - /* paInt8: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int8 ), - /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, UInt8 ) - ), - /* paInt32: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_USE_CONVERTER_( Int32, Float32 ), - /* paInt32: */ PA_UNITY_CONVERSION_( 32 ), - /* paInt24: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int24 ), - /* paInt16: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int16 ), - /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int8 ), - /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, UInt8 ) - ), - /* paInt24: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_USE_CONVERTER_( Int24, Float32 ), - /* paInt32: */ PA_USE_CONVERTER_( Int24, Int32 ), - /* paInt24: */ PA_UNITY_CONVERSION_( 24 ), - /* paInt16: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, Int16 ), - /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, Int8 ), - /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, UInt8 ) - ), - /* paInt16: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_USE_CONVERTER_( Int16, Float32 ), - /* paInt32: */ PA_USE_CONVERTER_( Int16, Int32 ), - /* paInt24: */ PA_USE_CONVERTER_( Int16, Int24 ), - /* paInt16: */ PA_UNITY_CONVERSION_( 16 ), - /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int16, Int8 ), - /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int16, UInt8 ) - ), - /* paInt8: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_USE_CONVERTER_( Int8, Float32 ), - /* paInt32: */ PA_USE_CONVERTER_( Int8, Int32 ), - /* paInt24: */ PA_USE_CONVERTER_( Int8, Int24 ), - /* paInt16: */ PA_USE_CONVERTER_( Int8, Int16 ), - /* paInt8: */ PA_UNITY_CONVERSION_( 8 ), - /* paUInt8: */ PA_USE_CONVERTER_( Int8, UInt8 ) - ), - /* paUInt8: */ - PA_SELECT_FORMAT_( destinationFormat, - /* paFloat32: */ PA_USE_CONVERTER_( UInt8, Float32 ), - /* paInt32: */ PA_USE_CONVERTER_( UInt8, Int32 ), - /* paInt24: */ PA_USE_CONVERTER_( UInt8, Int24 ), - /* paInt16: */ PA_USE_CONVERTER_( UInt8, Int16 ), - /* paInt8: */ PA_USE_CONVERTER_( UInt8, Int8 ), - /* paUInt8: */ PA_UNITY_CONVERSION_( 8 ) - ) - ) -} - -/* -------------------------------------------------------------------------- */ - -#ifdef PA_NO_STANDARD_CONVERTERS - -/* -------------------------------------------------------------------------- */ - -PaUtilConverterTable paConverters = { - 0, /* PaUtilConverter *Float32_To_Int32; */ - 0, /* PaUtilConverter *Float32_To_Int32_Dither; */ - 0, /* PaUtilConverter *Float32_To_Int32_Clip; */ - 0, /* PaUtilConverter *Float32_To_Int32_DitherClip; */ - - 0, /* PaUtilConverter *Float32_To_Int24; */ - 0, /* PaUtilConverter *Float32_To_Int24_Dither; */ - 0, /* PaUtilConverter *Float32_To_Int24_Clip; */ - 0, /* PaUtilConverter *Float32_To_Int24_DitherClip; */ - - 0, /* PaUtilConverter *Float32_To_Int16; */ - 0, /* PaUtilConverter *Float32_To_Int16_Dither; */ - 0, /* PaUtilConverter *Float32_To_Int16_Clip; */ - 0, /* PaUtilConverter *Float32_To_Int16_DitherClip; */ - - 0, /* PaUtilConverter *Float32_To_Int8; */ - 0, /* PaUtilConverter *Float32_To_Int8_Dither; */ - 0, /* PaUtilConverter *Float32_To_Int8_Clip; */ - 0, /* PaUtilConverter *Float32_To_Int8_DitherClip; */ - - 0, /* PaUtilConverter *Float32_To_UInt8; */ - 0, /* PaUtilConverter *Float32_To_UInt8_Dither; */ - 0, /* PaUtilConverter *Float32_To_UInt8_Clip; */ - 0, /* PaUtilConverter *Float32_To_UInt8_DitherClip; */ - - 0, /* PaUtilConverter *Int32_To_Float32; */ - 0, /* PaUtilConverter *Int32_To_Int24; */ - 0, /* PaUtilConverter *Int32_To_Int24_Dither; */ - 0, /* PaUtilConverter *Int32_To_Int16; */ - 0, /* PaUtilConverter *Int32_To_Int16_Dither; */ - 0, /* PaUtilConverter *Int32_To_Int8; */ - 0, /* PaUtilConverter *Int32_To_Int8_Dither; */ - 0, /* PaUtilConverter *Int32_To_UInt8; */ - 0, /* PaUtilConverter *Int32_To_UInt8_Dither; */ - - 0, /* PaUtilConverter *Int24_To_Float32; */ - 0, /* PaUtilConverter *Int24_To_Int32; */ - 0, /* PaUtilConverter *Int24_To_Int16; */ - 0, /* PaUtilConverter *Int24_To_Int16_Dither; */ - 0, /* PaUtilConverter *Int24_To_Int8; */ - 0, /* PaUtilConverter *Int24_To_Int8_Dither; */ - 0, /* PaUtilConverter *Int24_To_UInt8; */ - 0, /* PaUtilConverter *Int24_To_UInt8_Dither; */ - - 0, /* PaUtilConverter *Int16_To_Float32; */ - 0, /* PaUtilConverter *Int16_To_Int32; */ - 0, /* PaUtilConverter *Int16_To_Int24; */ - 0, /* PaUtilConverter *Int16_To_Int8; */ - 0, /* PaUtilConverter *Int16_To_Int8_Dither; */ - 0, /* PaUtilConverter *Int16_To_UInt8; */ - 0, /* PaUtilConverter *Int16_To_UInt8_Dither; */ - - 0, /* PaUtilConverter *Int8_To_Float32; */ - 0, /* PaUtilConverter *Int8_To_Int32; */ - 0, /* PaUtilConverter *Int8_To_Int24 */ - 0, /* PaUtilConverter *Int8_To_Int16; */ - 0, /* PaUtilConverter *Int8_To_UInt8; */ - - 0, /* PaUtilConverter *UInt8_To_Float32; */ - 0, /* PaUtilConverter *UInt8_To_Int32; */ - 0, /* PaUtilConverter *UInt8_To_Int24; */ - 0, /* PaUtilConverter *UInt8_To_Int16; */ - 0, /* PaUtilConverter *UInt8_To_Int8; */ - - 0, /* PaUtilConverter *Copy_8_To_8; */ - 0, /* PaUtilConverter *Copy_16_To_16; */ - 0, /* PaUtilConverter *Copy_24_To_24; */ - 0 /* PaUtilConverter *Copy_32_To_32; */ -}; - -/* -------------------------------------------------------------------------- */ - -#else /* PA_NO_STANDARD_CONVERTERS is not defined */ - -/* -------------------------------------------------------------------------- */ - -#define PA_CLIP_( val, min, max )\ - { val = ((val) < (min)) ? (min) : (((val) > (max)) ? (max) : (val)); } - - -static const float const_1_div_128_ = 1.0f / 128.0f; /* 8 bit multiplier */ - -static const float const_1_div_32768_ = 1.0f / 32768.f; /* 16 bit multiplier */ - -static const double const_1_div_2147483648_ = 1.0 / 2147483648.0; /* 32 bit multiplier */ - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* REVIEW */ -#ifdef PA_USE_C99_LRINTF - float scaled = *src * 0x7FFFFFFF; - *dest = lrintf(scaled-0.5f); -#else - double scaled = *src * 0x7FFFFFFF; - *dest = (PaInt32) scaled; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int32_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - - while( count-- ) - { - /* REVIEW */ -#ifdef PA_USE_C99_LRINTF - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = ((float)*src * (2147483646.0f)) + dither; - *dest = lrintf(dithered - 0.5f); -#else - double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - double dithered = ((double)*src * (2147483646.0)) + dither; - *dest = (PaInt32) dithered; -#endif - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int32_Clip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* REVIEW */ -#ifdef PA_USE_C99_LRINTF - float scaled = *src * 0x7FFFFFFF; - PA_CLIP_( scaled, -2147483648.f, 2147483647.f ); - *dest = lrintf(scaled-0.5f); -#else - double scaled = *src * 0x7FFFFFFF; - PA_CLIP_( scaled, -2147483648., 2147483647. ); - *dest = (PaInt32) scaled; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int32_DitherClip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - - while( count-- ) - { - /* REVIEW */ -#ifdef PA_USE_C99_LRINTF - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = ((float)*src * (2147483646.0f)) + dither; - PA_CLIP_( dithered, -2147483648.f, 2147483647.f ); - *dest = lrintf(dithered-0.5f); -#else - double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - double dithered = ((double)*src * (2147483646.0)) + dither; - PA_CLIP_( dithered, -2147483648., 2147483647. ); - *dest = (PaInt32) dithered; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - PaInt32 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* convert to 32 bit and drop the low 8 bits */ - double scaled = *src * 0x7FFFFFFF; - temp = (PaInt32) scaled; - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = (unsigned char)(temp >> 8); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 24); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(temp >> 24); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 8); -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int24_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - PaInt32 temp; - - while( count-- ) - { - /* convert to 32 bit and drop the low 8 bits */ - - double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - double dithered = ((double)*src * (2147483646.0)) + dither; - - temp = (PaInt32) dithered; - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = (unsigned char)(temp >> 8); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 24); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(temp >> 24); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 8); -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int24_Clip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - PaInt32 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* convert to 32 bit and drop the low 8 bits */ - double scaled = *src * 0x7FFFFFFF; - PA_CLIP_( scaled, -2147483648., 2147483647. ); - temp = (PaInt32) scaled; - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = (unsigned char)(temp >> 8); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 24); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(temp >> 24); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 8); -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int24_DitherClip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - PaInt32 temp; - - while( count-- ) - { - /* convert to 32 bit and drop the low 8 bits */ - - double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - double dithered = ((double)*src * (2147483646.0)) + dither; - PA_CLIP_( dithered, -2147483648., 2147483647. ); - - temp = (PaInt32) dithered; - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = (unsigned char)(temp >> 8); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 24); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(temp >> 24); - dest[1] = (unsigned char)(temp >> 16); - dest[2] = (unsigned char)(temp >> 8); -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { -#ifdef PA_USE_C99_LRINTF - float tempf = (*src * (32767.0f)) ; - *dest = lrintf(tempf-0.5f); -#else - short samp = (short) (*src * (32767.0f)); - *dest = samp; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int16_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - - while( count-- ) - { - - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = (*src * (32766.0f)) + dither; - -#ifdef PA_USE_C99_LRINTF - *dest = lrintf(dithered-0.5f); -#else - *dest = (PaInt16) dithered; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int16_Clip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { -#ifdef PA_USE_C99_LRINTF - long samp = lrintf((*src * (32767.0f)) -0.5f); -#else - long samp = (PaInt32) (*src * (32767.0f)); -#endif - PA_CLIP_( samp, -0x8000, 0x7FFF ); - *dest = (PaInt16) samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int16_DitherClip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = (*src * (32766.0f)) + dither; - PaInt32 samp = (PaInt32) dithered; - PA_CLIP_( samp, -0x8000, 0x7FFF ); -#ifdef PA_USE_C99_LRINTF - *dest = lrintf(samp-0.5f); -#else - *dest = (PaInt16) samp; -#endif - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - signed char samp = (signed char) (*src * (127.0f)); - *dest = samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = (*src * (126.0f)) + dither; - PaInt32 samp = (PaInt32) dithered; - *dest = (signed char) samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int8_Clip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - PaInt32 samp = (PaInt32)(*src * (127.0f)); - PA_CLIP_( samp, -0x80, 0x7F ); - *dest = (signed char) samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_Int8_DitherClip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); - /* use smaller scaler to prevent overflow when we add the dither */ - float dithered = (*src * (126.0f)) + dither; - PaInt32 samp = (PaInt32) dithered; - PA_CLIP_( samp, -0x80, 0x7F ); - *dest = (signed char) samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_UInt8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - unsigned char samp = (unsigned char)(128 + ((unsigned char) (*src * (127.0f)))); - *dest = samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_UInt8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_UInt8_Clip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Float32_To_UInt8_DitherClip( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - float *src = (float*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Float32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - float *dest = (float*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = (float) ((double)*src * const_1_div_2147483648_); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* REVIEW */ -#if defined(PA_LITTLE_ENDIAN) - dest[0] = (unsigned char)(*src >> 8); - dest[1] = (unsigned char)(*src >> 16); - dest[2] = (unsigned char)(*src >> 24); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(*src >> 24); - dest[1] = (unsigned char)(*src >> 16); - dest[2] = (unsigned char)(*src >> 8); -#endif - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int24_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - (void) destinationBuffer; /* unused parameters */ - (void) destinationStride; /* unused parameters */ - (void) sourceBuffer; /* unused parameters */ - (void) sourceStride; /* unused parameters */ - (void) count; /* unused parameters */ - (void) ditherGenerator; /* unused parameters */ - /* IMPLEMENT ME */ -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = (PaInt16) ((*src) >> 16); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int16_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - PaInt32 dither; - - while( count-- ) - { - /* REVIEW */ - dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); - *dest = (PaInt16) ((((*src)>>1) + dither) >> 15); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = (signed char) ((*src) >> 24); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_Int8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - PaInt32 dither; - - while( count-- ) - { - /* REVIEW */ - dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); - *dest = (signed char) ((((*src)>>1) + dither) >> 23); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_UInt8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (unsigned char)(((*src) >> 24) + 128); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int32_To_UInt8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt32 *src = (PaInt32*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Float32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - float *dest = (float*)destinationBuffer; - PaInt32 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - temp = (((long)src[0]) << 8); - temp = temp | (((long)src[1]) << 16); - temp = temp | (((long)src[2]) << 24); -#elif defined(PA_BIG_ENDIAN) - temp = (((long)src[0]) << 24); - temp = temp | (((long)src[1]) << 16); - temp = temp | (((long)src[2]) << 8); -#endif - - *dest = (float) ((double)temp * const_1_div_2147483648_); - - src += sourceStride * 3; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Int32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - PaInt32 *dest = (PaInt32*) destinationBuffer; - PaInt32 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - temp = (((long)src[0]) << 8); - temp = temp | (((long)src[1]) << 16); - temp = temp | (((long)src[2]) << 24); -#elif defined(PA_BIG_ENDIAN) - temp = (((long)src[0]) << 24); - temp = temp | (((long)src[1]) << 16); - temp = temp | (((long)src[2]) << 8); -#endif - - *dest = temp; - - src += sourceStride * 3; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Int16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - - PaInt16 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - /* src[0] is discarded */ - temp = (((PaInt16)src[1])); - temp = temp | (PaInt16)(((PaInt16)src[2]) << 8); -#elif defined(PA_BIG_ENDIAN) - /* src[2] is discarded */ - temp = (PaInt16)(((PaInt16)src[0]) << 8); - temp = temp | (((PaInt16)src[1])); -#endif - - *dest = temp; - - src += sourceStride * 3; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Int16_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - (void) destinationBuffer; /* unused parameters */ - (void) destinationStride; /* unused parameters */ - (void) sourceBuffer; /* unused parameters */ - (void) sourceStride; /* unused parameters */ - (void) count; /* unused parameters */ - (void) ditherGenerator; /* unused parameters */ - /* IMPLEMENT ME */ -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Int8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - /* src[0] is discarded */ - /* src[1] is discarded */ - *dest = src[2]; -#elif defined(PA_BIG_ENDIAN) - /* src[2] is discarded */ - /* src[1] is discarded */ - *dest = src[0]; -#endif - - src += sourceStride * 3; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_Int8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - (void) destinationBuffer; /* unused parameters */ - (void) destinationStride; /* unused parameters */ - (void) sourceBuffer; /* unused parameters */ - (void) sourceStride; /* unused parameters */ - (void) count; /* unused parameters */ - (void) ditherGenerator; /* unused parameters */ - /* IMPLEMENT ME */ -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_UInt8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - /* src[0] is discarded */ - /* src[1] is discarded */ - *dest = (unsigned char)(src[2] + 128); -#elif defined(PA_BIG_ENDIAN) - *dest = (unsigned char)(src[0] + 128); - /* src[1] is discarded */ - /* src[2] is discarded */ -#endif - - src += sourceStride * 3; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int24_To_UInt8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - (void) destinationBuffer; /* unused parameters */ - (void) destinationStride; /* unused parameters */ - (void) sourceBuffer; /* unused parameters */ - (void) sourceStride; /* unused parameters */ - (void) count; /* unused parameters */ - (void) ditherGenerator; /* unused parameters */ - /* IMPLEMENT ME */ -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_Float32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - float *dest = (float*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - float samp = *src * const_1_div_32768_; /* FIXME: i'm concerned about this being asymetrical with float->int16 -rb */ - *dest = samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_Int32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* REVIEW: we should consider something like - (*src << 16) | (*src & 0xFFFF) - */ - - *dest = *src << 16; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_Int24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*) sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - PaInt16 temp; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - temp = *src; - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = 0; - dest[1] = (unsigned char)(temp); - dest[2] = (unsigned char)(temp >> 8); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(temp >> 8); - dest[1] = (unsigned char)(temp); - dest[2] = 0; -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_Int8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (signed char)((*src) >> 8); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_Int8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_UInt8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (unsigned char)(((*src) >> 8) + 128); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int16_To_UInt8_Dither( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaInt16 *src = (PaInt16*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - /* IMPLEMENT ME */ - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int8_To_Float32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - signed char *src = (signed char*)sourceBuffer; - float *dest = (float*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - float samp = *src * const_1_div_128_; - *dest = samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int8_To_Int32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - signed char *src = (signed char*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (*src) << 24; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int8_To_Int24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - signed char *src = (signed char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = 0; - dest[1] = 0; - dest[2] = (*src); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (*src); - dest[1] = 0; - dest[2] = 0; -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int8_To_Int16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - signed char *src = (signed char*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (PaInt16)((*src) << 8); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Int8_To_UInt8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - signed char *src = (signed char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (unsigned char)(*src + 128); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void UInt8_To_Float32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - float *dest = (float*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - float samp = (*src - 128) * const_1_div_128_; - *dest = samp; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void UInt8_To_Int32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - PaInt32 *dest = (PaInt32*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (*src - 128) << 24; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void UInt8_To_Int24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - (void) ditherGenerator; /* unused parameters */ - - while( count-- ) - { - -#if defined(PA_LITTLE_ENDIAN) - dest[0] = 0; - dest[1] = 0; - dest[2] = (unsigned char)(*src - 128); -#elif defined(PA_BIG_ENDIAN) - dest[0] = (unsigned char)(*src - 128); - dest[1] = 0; - dest[2] = 0; -#endif - - src += sourceStride; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void UInt8_To_Int16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - PaInt16 *dest = (PaInt16*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (PaInt16)((*src - 128) << 8); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void UInt8_To_Int8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - signed char *dest = (signed char*)destinationBuffer; - (void)ditherGenerator; /* unused parameter */ - - while( count-- ) - { - (*dest) = (signed char)(*src - 128); - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Copy_8_To_8( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = *src; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Copy_16_To_16( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaUint16 *src = (PaUint16 *)sourceBuffer; - PaUint16 *dest = (PaUint16 *)destinationBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = *src; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Copy_24_To_24( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - unsigned char *src = (unsigned char*)sourceBuffer; - unsigned char *dest = (unsigned char*)destinationBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - dest[0] = src[0]; - dest[1] = src[1]; - dest[2] = src[2]; - - src += sourceStride * 3; - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Copy_32_To_32( - void *destinationBuffer, signed int destinationStride, - void *sourceBuffer, signed int sourceStride, - unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) -{ - PaUint32 *dest = (PaUint32 *)destinationBuffer; - PaUint32 *src = (PaUint32 *)sourceBuffer; - - (void) ditherGenerator; /* unused parameter */ - - while( count-- ) - { - *dest = *src; - - src += sourceStride; - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -PaUtilConverterTable paConverters = { - Float32_To_Int32, /* PaUtilConverter *Float32_To_Int32; */ - Float32_To_Int32_Dither, /* PaUtilConverter *Float32_To_Int32_Dither; */ - Float32_To_Int32_Clip, /* PaUtilConverter *Float32_To_Int32_Clip; */ - Float32_To_Int32_DitherClip, /* PaUtilConverter *Float32_To_Int32_DitherClip; */ - - Float32_To_Int24, /* PaUtilConverter *Float32_To_Int24; */ - Float32_To_Int24_Dither, /* PaUtilConverter *Float32_To_Int24_Dither; */ - Float32_To_Int24_Clip, /* PaUtilConverter *Float32_To_Int24_Clip; */ - Float32_To_Int24_DitherClip, /* PaUtilConverter *Float32_To_Int24_DitherClip; */ - - Float32_To_Int16, /* PaUtilConverter *Float32_To_Int16; */ - Float32_To_Int16_Dither, /* PaUtilConverter *Float32_To_Int16_Dither; */ - Float32_To_Int16_Clip, /* PaUtilConverter *Float32_To_Int16_Clip; */ - Float32_To_Int16_DitherClip, /* PaUtilConverter *Float32_To_Int16_DitherClip; */ - - Float32_To_Int8, /* PaUtilConverter *Float32_To_Int8; */ - Float32_To_Int8_Dither, /* PaUtilConverter *Float32_To_Int8_Dither; */ - Float32_To_Int8_Clip, /* PaUtilConverter *Float32_To_Int8_Clip; */ - Float32_To_Int8_DitherClip, /* PaUtilConverter *Float32_To_Int8_DitherClip; */ - - Float32_To_UInt8, /* PaUtilConverter *Float32_To_UInt8; */ - Float32_To_UInt8_Dither, /* PaUtilConverter *Float32_To_UInt8_Dither; */ - Float32_To_UInt8_Clip, /* PaUtilConverter *Float32_To_UInt8_Clip; */ - Float32_To_UInt8_DitherClip, /* PaUtilConverter *Float32_To_UInt8_DitherClip; */ - - Int32_To_Float32, /* PaUtilConverter *Int32_To_Float32; */ - Int32_To_Int24, /* PaUtilConverter *Int32_To_Int24; */ - Int32_To_Int24_Dither, /* PaUtilConverter *Int32_To_Int24_Dither; */ - Int32_To_Int16, /* PaUtilConverter *Int32_To_Int16; */ - Int32_To_Int16_Dither, /* PaUtilConverter *Int32_To_Int16_Dither; */ - Int32_To_Int8, /* PaUtilConverter *Int32_To_Int8; */ - Int32_To_Int8_Dither, /* PaUtilConverter *Int32_To_Int8_Dither; */ - Int32_To_UInt8, /* PaUtilConverter *Int32_To_UInt8; */ - Int32_To_UInt8_Dither, /* PaUtilConverter *Int32_To_UInt8_Dither; */ - - Int24_To_Float32, /* PaUtilConverter *Int24_To_Float32; */ - Int24_To_Int32, /* PaUtilConverter *Int24_To_Int32; */ - Int24_To_Int16, /* PaUtilConverter *Int24_To_Int16; */ - Int24_To_Int16_Dither, /* PaUtilConverter *Int24_To_Int16_Dither; */ - Int24_To_Int8, /* PaUtilConverter *Int24_To_Int8; */ - Int24_To_Int8_Dither, /* PaUtilConverter *Int24_To_Int8_Dither; */ - Int24_To_UInt8, /* PaUtilConverter *Int24_To_UInt8; */ - Int24_To_UInt8_Dither, /* PaUtilConverter *Int24_To_UInt8_Dither; */ - - Int16_To_Float32, /* PaUtilConverter *Int16_To_Float32; */ - Int16_To_Int32, /* PaUtilConverter *Int16_To_Int32; */ - Int16_To_Int24, /* PaUtilConverter *Int16_To_Int24; */ - Int16_To_Int8, /* PaUtilConverter *Int16_To_Int8; */ - Int16_To_Int8_Dither, /* PaUtilConverter *Int16_To_Int8_Dither; */ - Int16_To_UInt8, /* PaUtilConverter *Int16_To_UInt8; */ - Int16_To_UInt8_Dither, /* PaUtilConverter *Int16_To_UInt8_Dither; */ - - Int8_To_Float32, /* PaUtilConverter *Int8_To_Float32; */ - Int8_To_Int32, /* PaUtilConverter *Int8_To_Int32; */ - Int8_To_Int24, /* PaUtilConverter *Int8_To_Int24 */ - Int8_To_Int16, /* PaUtilConverter *Int8_To_Int16; */ - Int8_To_UInt8, /* PaUtilConverter *Int8_To_UInt8; */ - - UInt8_To_Float32, /* PaUtilConverter *UInt8_To_Float32; */ - UInt8_To_Int32, /* PaUtilConverter *UInt8_To_Int32; */ - UInt8_To_Int24, /* PaUtilConverter *UInt8_To_Int24; */ - UInt8_To_Int16, /* PaUtilConverter *UInt8_To_Int16; */ - UInt8_To_Int8, /* PaUtilConverter *UInt8_To_Int8; */ - - Copy_8_To_8, /* PaUtilConverter *Copy_8_To_8; */ - Copy_16_To_16, /* PaUtilConverter *Copy_16_To_16; */ - Copy_24_To_24, /* PaUtilConverter *Copy_24_To_24; */ - Copy_32_To_32 /* PaUtilConverter *Copy_32_To_32; */ -}; - -/* -------------------------------------------------------------------------- */ - -#endif /* PA_NO_STANDARD_CONVERTERS */ - -/* -------------------------------------------------------------------------- */ - -PaUtilZeroer* PaUtil_SelectZeroer( PaSampleFormat destinationFormat ) -{ - switch( destinationFormat & ~paNonInterleaved ){ - case paFloat32: - return paZeroers.Zero32; - case paInt32: - return paZeroers.Zero32; - case paInt24: - return paZeroers.Zero24; - case paInt16: - return paZeroers.Zero16; - case paInt8: - return paZeroers.Zero8; - case paUInt8: - return paZeroers.ZeroU8; - default: return 0; - } -} - -/* -------------------------------------------------------------------------- */ - -#ifdef PA_NO_STANDARD_ZEROERS - -/* -------------------------------------------------------------------------- */ - -PaUtilZeroerTable paZeroers = { - 0, /* PaUtilZeroer *ZeroU8; */ - 0, /* PaUtilZeroer *Zero8; */ - 0, /* PaUtilZeroer *Zero16; */ - 0, /* PaUtilZeroer *Zero24; */ - 0, /* PaUtilZeroer *Zero32; */ -}; - -/* -------------------------------------------------------------------------- */ - -#else /* PA_NO_STANDARD_ZEROERS is not defined */ - -/* -------------------------------------------------------------------------- */ - -static void ZeroU8( void *destinationBuffer, signed int destinationStride, - unsigned int count ) -{ - unsigned char *dest = (unsigned char*)destinationBuffer; - - while( count-- ) - { - *dest = 128; - - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Zero8( void *destinationBuffer, signed int destinationStride, - unsigned int count ) -{ - unsigned char *dest = (unsigned char*)destinationBuffer; - - while( count-- ) - { - *dest = 0; - - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Zero16( void *destinationBuffer, signed int destinationStride, - unsigned int count ) -{ - PaUint16 *dest = (PaUint16 *)destinationBuffer; - - while( count-- ) - { - *dest = 0; - - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Zero24( void *destinationBuffer, signed int destinationStride, - unsigned int count ) -{ - unsigned char *dest = (unsigned char*)destinationBuffer; - - while( count-- ) - { - dest[0] = 0; - dest[1] = 0; - dest[2] = 0; - - dest += destinationStride * 3; - } -} - -/* -------------------------------------------------------------------------- */ - -static void Zero32( void *destinationBuffer, signed int destinationStride, - unsigned int count ) -{ - PaUint32 *dest = (PaUint32 *)destinationBuffer; - - while( count-- ) - { - *dest = 0; - - dest += destinationStride; - } -} - -/* -------------------------------------------------------------------------- */ - -PaUtilZeroerTable paZeroers = { - ZeroU8, /* PaUtilZeroer *ZeroU8; */ - Zero8, /* PaUtilZeroer *Zero8; */ - Zero16, /* PaUtilZeroer *Zero16; */ - Zero24, /* PaUtilZeroer *Zero24; */ - Zero32, /* PaUtilZeroer *Zero32; */ -}; - -/* -------------------------------------------------------------------------- */ - -#endif /* PA_NO_STANDARD_ZEROERS */ |