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https://github.com/id-Software/DOOM-IOS2.git
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Initial Commit
This commit is contained in:
Jeff Farrand
295
common/embeddedaudiosynthesis/arm-wt-22k/lib_src/eas_mdls.h
Executable file
295
common/embeddedaudiosynthesis/arm-wt-22k/lib_src/eas_mdls.h
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/*----------------------------------------------------------------------------
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*
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* File:
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* eas_mdls.h
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*
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* Contents and purpose:
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* Declarations, interfaces, and prototypes for eas_mdls.c
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*
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* Copyright Sonic Network Inc. 2004
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*----------------------------------------------------------------------------
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*/
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#ifndef _EAS_MDLS_H
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#define _EAS_MDLS_H
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/*------------------------------------
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* includes
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*------------------------------------
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*/
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#include "eas_data.h"
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/*------------------------------------
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* Some defines for dls.h
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*------------------------------------
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*/
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#ifndef DWORD
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#define DWORD EAS_I32
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#define FAR
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#define SHORT EAS_I16
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#define USHORT EAS_U16
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#define LONG EAS_I32
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#define ULONG EAS_U32
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#endif
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/* GUID struct (call it DLSID in case GUID is defined elsewhere) */
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typedef struct
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{
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EAS_U32 Data1;
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EAS_U16 Data2;
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EAS_U16 Data3;
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EAS_U8 Data4[8];
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} DLSID;
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#define DEFINE_DLSID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) const DLSID name = { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
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/*------------------------------------
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* defines
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*------------------------------------
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*/
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/* maximum sample memory for DLS query support */
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#ifndef MAX_DLS_MEMORY
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#define MAX_DLS_MEMORY 65536
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#endif
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/* size of conditional chunk stack */
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#ifndef CDL_STACK_SIZE
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#define CDL_STACK_SIZE 8
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#endif
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/* size of read buffer for sample conversion */
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#ifndef SAMPLE_CONVERT_CHUNK_SIZE
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#define SAMPLE_CONVERT_CHUNK_SIZE 32
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#endif
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#define ZERO_TIME_IN_CENTS -32768
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/* Pan calculation macros */
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#define PAN_CONVERSION_FACTOR 4129
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#define MAX_PAN_VALUE 63
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#define MIN_PAN_VALUE -63
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/* multiplier to convert time cents to 10-bit fraction log for EAS_LogToLinear16 */
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#define TIME_CENTS_TO_LOG2 27962
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/* conversion factor sustain level from percent to exponent for LogToLinear16 */
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#define SUSTAIN_LOG_CONVERSION_FACTOR 536871
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#define SUSTAIN_LOG_CONVERSION_SHIFT 15
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/* conversion factor sustain level from percent to EG full scale */
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#define SUSTAIN_LINEAR_CONVERSION_FACTOR 1073709
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/* conversion factor to convert frame period to decay rate */
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#define DECAY_CONVERSION_FACTOR -16
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/*----------------------------------------------------------------------------
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* These macros define the various characteristics of the defined sample rates
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*----------------------------------------------------------------------------
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* DLS_ATTACK_TIME_CONVERT log offset for conversion from time cents to attack rate
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* DLS_LFO_FREQUENCY_CONVERT pitch-cents offset for LFO frequency conversion
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*----------------------------------------------------------------------------
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*/
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#if defined (_SAMPLE_RATE_8000)
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#define DLS_RATE_CONVERT -9559
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#define DLS_LFO_FREQUENCY_CONVERT 5921
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#elif defined (_SAMPLE_RATE_16000)
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#define DLS_RATE_CONVERT -9559
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#define DLS_LFO_FREQUENCY_CONVERT 5921
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#elif defined (_SAMPLE_RATE_20000)
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#define DLS_RATE_CONVERT -8745
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#define DLS_LFO_FREQUENCY_CONVERT 5108
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#elif defined (_SAMPLE_RATE_22050)
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#define DLS_RATE_CONVERT -8914
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#define DLS_LFO_FREQUENCY_CONVERT 5277
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#elif defined (_SAMPLE_RATE_24000)
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#define DLS_RATE_CONVERT -9061
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#define DLS_LFO_FREQUENCY_CONVERT 5423
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#elif defined (_SAMPLE_RATE_32000)
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#define DLS_RATE_CONVERT -9559
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#define DLS_LFO_FREQUENCY_CONVERT 5921
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#elif defined (_SAMPLE_RATE_44100)
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#define DLS_RATE_CONVERT -8914
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#define DLS_LFO_FREQUENCY_CONVERT 5277
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#elif defined (_SAMPLE_RATE_48000)
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#define DLS_RATE_CONVERT -9061
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#define DLS_LFO_FREQUENCY_CONVERT 5423
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#else
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#error "_SAMPLE_RATE_XXXXX must be defined to valid rate"
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#endif
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/*
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* FILTER_Q_CONVERSION_FACTOR convers the 0.1dB steps in the DLS
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* file to our internal 0.75 dB steps. The value is calculated
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* as follows:
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*
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* 32768 / (10 * <step-size in dB>)
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*
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* FILTER_RESONANCE_NUM_ENTRIES is the number of entries in the table
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*/
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#define FILTER_Q_CONVERSION_FACTOR 4369
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#define FILTER_RESONANCE_NUM_ENTRIES 31
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/*
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* Multiplier to convert DLS gain units (10ths of a dB) to a
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* power-of-two exponent for conversion to linear gain using our
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* piece-wise linear approximator. Note that we ignore the lower
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* 16-bits of the DLS gain value. The result is a 10-bit fraction
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* that works with the EAS_LogToLinear16 function.
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*
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* DLS_GAIN_FACTOR = (2^18) / (200 * log10(2))
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*/
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#define DLS_GAIN_FACTOR 4354
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#define DLS_GAIN_SHIFT 8
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/*
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* Reciprocal of 10 for quick divide by 10's
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*
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* DLS_GAIN_FACTOR = (2^18) / (200 * log10(2))
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*/
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#define DLS_DIV_10_FACTOR 3277
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#define DLS_DIV_10_SHIFT 16
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/*
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* Multiplier to convert DLS time cents units to a power-of-two
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* exponent for conversion to absolute time units using our
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* piece-wise linear approximator.
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*
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* DLS_TIME_FACTOR = (2^22) / 1200
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*/
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#define DLS_TIME_FACTOR 3495
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#define DLS_TIME_SHIFT 22
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/* LFO limits */
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#define MAX_LFO_FREQUENCY_IN_HERTZ 20
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#define MIN_LFO_FREQUENCY_IN_HERTZ 0.1
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#define MAX_LFO_FREQUENCY_IN_PITCHCENTS 1549
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#define MIN_LFO_FREQUENCY_IN_PITCHCENTS -7624
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#define MAX_LFO_AMPLITUDE_DEPTH 12 /* in dB, DLS2.1 p 31*/
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#define MIN_LFO_AMPLITUDE_DEPTH -12 /* in dB, DLS2.1 p 31*/
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/* add to pitch cents before pow(2.0, n) to convert to frequency */
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#define ABSOLUTE_PITCH_BIAS 238395828
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#define A5_PITCH_OFFSET 6900
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/*
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CHUNK_TYPE is a macro that converts the 4 input args into a 32-bit int
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where
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argument a is placed at the MSB location and
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argument d is placed at the LSB location.
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This is useful for determining the DLS chunk types
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*/
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#define CHUNK_TYPE(a,b,c,d) ( \
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( ((EAS_U32)(a) & 0xFF) << 24 ) \
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+ ( ((EAS_U32)(b) & 0xFF) << 16 ) \
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+ ( ((EAS_U32)(c) & 0xFF) << 8 ) \
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+ ( ((EAS_U32)(d) & 0xFF) ) )
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#define CHUNK_RIFF CHUNK_TYPE('R','I','F','F')
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#define CHUNK_DLS CHUNK_TYPE('D','L','S',' ')
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#define CHUNK_CDL CHUNK_TYPE('c','d','l',' ')
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#define CHUNK_VERS CHUNK_TYPE('v','e','r','s')
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#define CHUNK_DLID CHUNK_TYPE('d','l','i','d')
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#define CHUNK_LIST CHUNK_TYPE('L','I','S','T')
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#define CHUNK_COLH CHUNK_TYPE('c','o','l','h')
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#define CHUNK_LINS CHUNK_TYPE('l','i','n','s')
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#define CHUNK_PTBL CHUNK_TYPE('p','t','b','l')
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#define CHUNK_WVPL CHUNK_TYPE('w','v','p','l')
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#define CHUNK_INFO CHUNK_TYPE('I','N','F','O')
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#define CHUNK_INAM CHUNK_TYPE('I','N','A','M')
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#define CHUNK_INS CHUNK_TYPE('i','n','s',' ')
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#define CHUNK_INSH CHUNK_TYPE('i','n','s','h')
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#define CHUNK_LRGN CHUNK_TYPE('l','r','g','n')
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#define CHUNK_RGN CHUNK_TYPE('r','g','n',' ')
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#define CHUNK_RGN2 CHUNK_TYPE('r','g','n','2')
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#define CHUNK_RGNH CHUNK_TYPE('r','g','n','h')
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#define CHUNK_WSMP CHUNK_TYPE('w','s','m','p')
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#define CHUNK_WLNK CHUNK_TYPE('w','l','n','k')
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#define CHUNK_LART CHUNK_TYPE('l','a','r','t')
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#define CHUNK_LAR2 CHUNK_TYPE('l','a','r','2')
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#define CHUNK_ART1 CHUNK_TYPE('a','r','t','1')
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#define CHUNK_ART2 CHUNK_TYPE('a','r','t','2')
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#define CHUNK_WAVE CHUNK_TYPE('w','a','v','e')
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#define CHUNK_FMT CHUNK_TYPE('f','m','t',' ')
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#define CHUNK_DATA CHUNK_TYPE('d','a','t','a')
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#define CHUNK_DMPR CHUNK_TYPE('d','m','p','r')
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#define WAVE_FORMAT_PCM 0x0001 /* Microsoft PCM format, see DLS2.1 p60 */
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#define WAVE_FORMAT_EXTENSIBLE 0xffff
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/* defines for wave table structures */
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/* initialize each articulation structure to a harmless state */
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/* change art values after we've determined EAS internals */
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#define DEFAULT_DLS_FILTER_CUTOFF_FREQUENCY 0x7FFF /* DLS2.1, p 31 means leave filter off */
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/**********/
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/* define the waves that we expect to generate instead of store */
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/* NOTE: our comparison routine converts the input string
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to lowercase, so the following comparison values should all
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be in lowercase.
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*/
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#define STRING_NOISE "noise"
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/*------------------------------------
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* type definitions
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*------------------------------------
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*/
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#ifdef _STANDALONE_CONVERTER
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typedef struct s_dls_params
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{
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EAS_INT sampleRate;
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EAS_INT samplesPerFrame;
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EAS_INT bitDepth;
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double ditherLevel;
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double ditherFilterCoeff;
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EAS_BOOL compatibility;
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EAS_BOOL encodeADPCM;
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} S_DLS_PARAMS;
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#endif
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/* function prototypes */
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EAS_RESULT DLSParser (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE fileHandle, EAS_I32 offset, S_DLS **pDLS);
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EAS_RESULT DLSCleanup (EAS_HW_DATA_HANDLE hwInstData, S_DLS *pDLS);
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void DLSAddRef (S_DLS *pDLS);
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EAS_I16 ConvertDelay (EAS_I32 timeCents);
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EAS_I16 ConvertRate (EAS_I32 timeCents);
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#ifdef _STANDALONE_CONVERTER
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void DLSConvParams (S_DLS_PARAMS *pParams, EAS_BOOL set);
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#endif
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#endif
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