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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-04 02:28:36 (GMT)
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-04 02:28:36 (GMT)
commit1b52a76815aa068a3477bfdfaf58718d41d7f9b4 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /arm-wt-22k/lib_src/eas_mdls.c
parent251d5a6afb8ebdccc8df9d438acc2761001d8bec (diff)
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auto import from //depot/cupcake/@135843
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-/*----------------------------------------------------------------------------
- *
- * File:
- * eas_mdls.c
- *
- * Contents and purpose:
- * This file contains DLS to EAS converter.
- *
- * Copyright (c) 2005 Sonic Network Inc.
-
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- *----------------------------------------------------------------------------
- * Revision Control:
- * $Revision: 818 $
- * $Date: 2007-08-02 15:19:41 -0700 (Thu, 02 Aug 2007) $
- *----------------------------------------------------------------------------
-*/
-
-/*
- * NOTES:
- *
- * Processor Endian-ness:
- *
- * We use the EAS_HWGetDWord() and EAS_HWGetWord () functions
- * extensively in this module. It would probably be faster to read
- * an entire data structure, but this introduces the problem of
- * sensitivity to processor endian-ness to the parser. By utlilizing
- * the host wrapper functions, we avoid having to flip bytes around
- * for big-endian processors. The default host wrapper versions of
- * these functions are insensitive to processor endian-ness due to
- * the fact that they read the file as a byte stream.
- *
- * Dynamic Memory:
- *
- * Dynamic memory allocation is a risky proposition in a mobile
- * device. The memory can become fragmented, resulting in an
- * inability to allocate a memory block, or garbage collection
- * routines can use many CPU cycles. Either can contribute to
- * failures of critical systems. Therefore, we try to minimize the
- * number of memory allocations we make.
- *
- * We allocate a single large block of memory for the entire
- * converted DLS collection, including the articulation data and
- * samples. This block is then sub-allocated for the various
- * data structures.
- *
- * Parser Overview:
- *
- * We make two passes through the file, the first pass to count the
- * number of instruments, regions, etc. and allocate memory for
- * them. The second pass parses the data into the allocated data
- * structures.
- *
- * Conditional chunks are challenging in that they can occur
- * anywhere in the list chunk that contains them. To simplify, we
- * parse the blocks in a list in specific order, no matter which
- * order they appear in the file. This way we don't allocate memory
- * and parse a block that we end up throwing away later due to
- * a conditional chunk.
- *
- * Assumptions that may bite us in the future:
- *
- * We make some assumptions to simplify things. The most fundamental
- * assumption is that there will be no more than one of any type of
- * chunk in a list. While this is consistent with the block diagram
- * of the file layout in the mDLS spec, there is nothing in the
- * spec that precludes having mulitple lar2 or rgn2 chunks, with
- * conditional blocks that dictate their usage.
- *
- * DLS -> EAS Conversion Process:
- *
- * Another challenge is that the DLS structure does not map well to
- * the current EAS sound library structure. Not all DLS constructs
- * are supported, and data from DLS structures must sometimes be
- * mapped to multiple EAS data structures. To simplify the process,
- * the EAS region, articulation, and envelopes are treated as a
- * single combined unit. Thus for each region, there must be one
- * articulation element and two envelope elements.
- *
- * The sample processing is also a multi-step process. First the
- * ptbl chunk is pre-parsed to determine the number of samples
- * in the collection. The next step is to parse the instrument data
- * to determine which samples are actually used by instruments.
- * Some samples may not be used because they are used only in
- * conditional blocks that the synthesizer cannot parse, or the
- * author neglected to remove unused samples from the collection.
- * In the next step, the active samples are read into memory and
- * converted to the appropriate playback format. Finally, as the
- * instruments are processed, the links are made to the samples and
- * wsmp data is extracted for the region and articulation data
- * structures.
-*/
-
-#ifndef _FILTER_ENABLED
-#error "Filter must be enabled if DLS_SYNTHESIZER is enabled"
-#endif
-
-/*------------------------------------
- * includes
- *------------------------------------
-*/
-
-/* this define allows us to use the sndlib.h structures as RW memory */
-#define SCNST
-
-#include "eas_data.h"
-#include "eas_host.h"
-#include "eas_mdls.h"
-#include "eas_math.h"
-#include "dls.h"
-#include "dls2.h"
-#include "eas_report.h"
-
-//2 we should replace log10() function with fixed point routine in ConvertSampleRate()
-/* lint is choking on the ARM math.h file, so we declare the log10 function here */
-extern double log10(double x);
-
-/*------------------------------------
- * defines
- *------------------------------------
-*/
-
-// #define _DEBUG_DLS
-
-#define DLS_MAX_WAVE_COUNT 1024
-#define DLS_MAX_ART_COUNT 2048
-#define DLS_MAX_REGION_COUNT 2048
-#define DLS_MAX_INST_COUNT 256
-#define MAX_DLS_WAVE_SIZE (1024*1024)
-
-/*------------------------------------
- * typedefs
- *------------------------------------
-*/
-
-/* offsets to articulation data */
-typedef enum
-{
- PARAM_MODIFIED = 0,
- PARAM_MOD_LFO_FREQ,
- PARAM_MOD_LFO_DELAY,
-
- PARAM_VIB_LFO_FREQ,
- PARAM_VIB_LFO_DELAY,
-
- PARAM_VOL_EG_DELAY,
- PARAM_VOL_EG_ATTACK,
- PARAM_VOL_EG_HOLD,
- PARAM_VOL_EG_DECAY,
- PARAM_VOL_EG_SUSTAIN,
- PARAM_VOL_EG_RELEASE,
- PARAM_VOL_EG_SHUTDOWN,
- PARAM_VOL_EG_VEL_TO_ATTACK,
- PARAM_VOL_EG_KEY_TO_DECAY,
- PARAM_VOL_EG_KEY_TO_HOLD,
-
- PARAM_MOD_EG_DELAY,
- PARAM_MOD_EG_ATTACK,
- PARAM_MOD_EG_HOLD,
- PARAM_MOD_EG_DECAY,
- PARAM_MOD_EG_SUSTAIN,
- PARAM_MOD_EG_RELEASE,
- PARAM_MOD_EG_VEL_TO_ATTACK,
- PARAM_MOD_EG_KEY_TO_DECAY,
- PARAM_MOD_EG_KEY_TO_HOLD,
-
- PARAM_INITIAL_FC,
- PARAM_INITIAL_Q,
- PARAM_MOD_LFO_TO_FC,
- PARAM_MOD_LFO_CC1_TO_FC,
- PARAM_MOD_LFO_CHAN_PRESS_TO_FC,
- PARAM_MOD_EG_TO_FC,
- PARAM_VEL_TO_FC,
- PARAM_KEYNUM_TO_FC,
-
- PARAM_MOD_LFO_TO_GAIN,
- PARAM_MOD_LFO_CC1_TO_GAIN,
- PARAM_MOD_LFO_CHAN_PRESS_TO_GAIN,
- PARAM_VEL_TO_GAIN,
-
- PARAM_TUNING,
- PARAM_KEYNUM_TO_PITCH,
- PARAM_VIB_LFO_TO_PITCH,
- PARAM_VIB_LFO_CC1_TO_PITCH,
- PARAM_VIB_LFO_CHAN_PRESS_TO_PITCH,
- PARAM_MOD_LFO_TO_PITCH,
- PARAM_MOD_LFO_CC1_TO_PITCH,
- PARAM_MOD_LFO_CHAN_PRESS_TO_PITCH,
- PARAM_MOD_EG_TO_PITCH,
-
- PARAM_DEFAULT_PAN,
- PARAM_MIDI_CC91_TO_REVERB_SEND,
- PARAM_DEFAULT_REVERB_SEND,
- PARAM_MIDI_CC93_TO_CHORUS_SEND,
- PARAM_DEFAULT_CHORUS_SEND,
- PARAM_TABLE_SIZE
-} E_ART_INDEX;
-
-/* temporary data structure combining region, articulation, and envelope data */
-typedef struct s_art_dls_tag
-{
- EAS_I16 values[PARAM_TABLE_SIZE];
-} S_DLS_ART_VALUES;
-
-/* temporary data structure for wlnk chunk data */
-typedef struct
-{
- EAS_I32 gain;
- EAS_U32 loopStart;
- EAS_U32 loopLength;
- EAS_U32 sampleRate;
- EAS_U16 bitsPerSample;
- EAS_I16 fineTune;
- EAS_U8 unityNote;
-} S_WSMP_DATA;
-
-/* temporary data structure used while parsing a DLS file */
-typedef struct
-{
- S_DLS *pDLS;
- EAS_HW_DATA_HANDLE hwInstData;
- EAS_FILE_HANDLE fileHandle;
- S_WSMP_DATA *wsmpData;
- EAS_U32 instCount;
- EAS_U32 regionCount;
- EAS_U32 artCount;
- EAS_U32 waveCount;
- EAS_U32 wavePoolSize;
- EAS_U32 wavePoolOffset;
- EAS_BOOL bigEndian;
- EAS_BOOL filterUsed;
-} SDLS_SYNTHESIZER_DATA;
-
-/* connection lookup table */
-typedef struct s_connection_tag
-{
- EAS_U16 source;
- EAS_U16 control;
- EAS_U16 destination;
- EAS_U16 connection;
-} S_CONNECTION;
-
-static const S_CONNECTION connTable[] =
-{
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_LFO_FREQUENCY, PARAM_MOD_LFO_FREQ },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_LFO_STARTDELAY, PARAM_MOD_LFO_DELAY},
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_VIB_FREQUENCY, PARAM_VIB_LFO_FREQ },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_VIB_STARTDELAY, PARAM_VIB_LFO_DELAY },
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_DELAYTIME, PARAM_VOL_EG_DELAY },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_ATTACKTIME, PARAM_VOL_EG_ATTACK },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_HOLDTIME, PARAM_VOL_EG_HOLD },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_DECAYTIME, PARAM_VOL_EG_DECAY },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_SUSTAINLEVEL, PARAM_VOL_EG_SUSTAIN },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_RELEASETIME, PARAM_VOL_EG_RELEASE },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG1_SHUTDOWNTIME, PARAM_VOL_EG_SHUTDOWN },
- { CONN_SRC_KEYONVELOCITY, CONN_SRC_NONE, CONN_DST_EG1_ATTACKTIME, PARAM_VOL_EG_VEL_TO_ATTACK },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_EG1_DECAYTIME, PARAM_VOL_EG_KEY_TO_DECAY },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_EG1_HOLDTIME, PARAM_VOL_EG_KEY_TO_HOLD },
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_DELAYTIME, PARAM_MOD_EG_DELAY },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_ATTACKTIME, PARAM_MOD_EG_ATTACK },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_HOLDTIME, PARAM_MOD_EG_HOLD },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_DECAYTIME, PARAM_MOD_EG_DECAY },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_SUSTAINLEVEL, PARAM_MOD_EG_SUSTAIN },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_EG2_RELEASETIME, PARAM_MOD_EG_RELEASE },
- { CONN_SRC_KEYONVELOCITY, CONN_SRC_NONE, CONN_DST_EG2_ATTACKTIME, PARAM_MOD_EG_VEL_TO_ATTACK },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_EG2_DECAYTIME, PARAM_MOD_EG_KEY_TO_DECAY },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_EG2_HOLDTIME, PARAM_MOD_EG_KEY_TO_HOLD },
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_FILTER_CUTOFF, PARAM_INITIAL_FC },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_FILTER_Q, PARAM_INITIAL_Q },
- { CONN_SRC_LFO, CONN_SRC_NONE, CONN_DST_FILTER_CUTOFF, PARAM_MOD_LFO_TO_FC },
- { CONN_SRC_LFO, CONN_SRC_CC1, CONN_DST_FILTER_CUTOFF, PARAM_MOD_LFO_CC1_TO_FC },
- { CONN_SRC_LFO, CONN_SRC_CHANNELPRESSURE, CONN_DST_FILTER_CUTOFF, PARAM_MOD_LFO_CHAN_PRESS_TO_FC },
- { CONN_SRC_EG2, CONN_SRC_NONE, CONN_DST_FILTER_CUTOFF, PARAM_MOD_EG_TO_FC },
- { CONN_SRC_KEYONVELOCITY, CONN_SRC_NONE, CONN_DST_FILTER_CUTOFF, PARAM_VEL_TO_FC },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_FILTER_CUTOFF, PARAM_KEYNUM_TO_FC },
-
- { CONN_SRC_LFO, CONN_SRC_NONE, CONN_DST_GAIN, PARAM_MOD_LFO_TO_GAIN },
- { CONN_SRC_LFO, CONN_SRC_CC1, CONN_DST_GAIN, PARAM_MOD_LFO_CC1_TO_GAIN },
- { CONN_SRC_LFO, CONN_SRC_CHANNELPRESSURE, CONN_DST_GAIN, PARAM_MOD_LFO_CHAN_PRESS_TO_GAIN },
- { CONN_SRC_KEYONVELOCITY, CONN_SRC_NONE, CONN_DST_GAIN, PARAM_VEL_TO_GAIN },
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_PITCH, PARAM_TUNING },
- { CONN_SRC_KEYNUMBER, CONN_SRC_NONE, CONN_DST_PITCH, PARAM_KEYNUM_TO_PITCH },
- { CONN_SRC_VIBRATO, CONN_SRC_NONE, CONN_DST_PITCH, PARAM_VIB_LFO_TO_PITCH },
- { CONN_SRC_VIBRATO, CONN_SRC_CC1, CONN_DST_PITCH, PARAM_VIB_LFO_CC1_TO_PITCH },
- { CONN_SRC_VIBRATO, CONN_SRC_CHANNELPRESSURE, CONN_DST_PITCH, PARAM_VIB_LFO_CHAN_PRESS_TO_PITCH },
- { CONN_SRC_LFO, CONN_SRC_NONE, CONN_DST_PITCH, PARAM_MOD_LFO_TO_PITCH },
- { CONN_SRC_LFO, CONN_SRC_CC1, CONN_DST_PITCH, PARAM_MOD_LFO_CC1_TO_PITCH },
- { CONN_SRC_LFO, CONN_SRC_CHANNELPRESSURE, CONN_DST_PITCH, PARAM_MOD_LFO_CHAN_PRESS_TO_PITCH },
- { CONN_SRC_EG2, CONN_SRC_NONE, CONN_DST_PITCH, PARAM_MOD_EG_TO_PITCH },
-
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_PAN, PARAM_DEFAULT_PAN },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_REVERB, PARAM_DEFAULT_REVERB_SEND },
- { CONN_SRC_CC91, CONN_SRC_NONE, CONN_DST_REVERB, PARAM_MIDI_CC91_TO_REVERB_SEND },
- { CONN_SRC_NONE, CONN_SRC_NONE, CONN_DST_CHORUS, PARAM_DEFAULT_CHORUS_SEND },
- { CONN_SRC_CC93, CONN_SRC_NONE, CONN_DST_REVERB, PARAM_MIDI_CC93_TO_CHORUS_SEND }
-};
-#define ENTRIES_IN_CONN_TABLE (sizeof(connTable)/sizeof(S_CONNECTION))
-
-static const S_DLS_ART_VALUES defaultArt =
-{
- 0, /* not modified */
- -851, /* Mod LFO frequency: 5 Hz */
- -7973, /* Mod LFO delay: 10 milliseconds */
-
- -851, /* Vib LFO frequency: 5 Hz */
- -7973, /* Vib LFO delay: 10 milliseconds */
-
- -32768, /* EG1 delay time: 0 secs */
- -32768, /* EG1 attack time: 0 secs */
- -32768, /* EG1 hold time: 0 secs */
- -32768, /* EG1 decay time: 0 secs */
- 1000, /* EG1 sustain level: 100.0% */
- -32768, /* EG1 release time: 0 secs */
- -7271, /* EG1 shutdown time: 15 msecs */
- 0, /* EG1 velocity to attack: 0 time cents */
- 0, /* EG1 key number to decay: 0 time cents */
- 0, /* EG1 key number to hold: 0 time cents */
-
- -32768, /* EG2 delay time: 0 secs */
- -32768, /* EG2 attack time: 0 secs */
- -32768, /* EG2 hold time: 0 secs */
- -32768, /* EG2 decay time: 0 secs */
- 1000, /* EG2 sustain level: 100.0% */
- -32768, /* EG2 release time: 0 secs */
- 0, /* EG2 velocity to attack: 0 time cents */
- 0, /* EG2 key number to decay: 0 time cents */
- 0, /* EG2 key number to hold: 0 time cents */
-
- 0x7fff, /* Initial Fc: Disabled */
- 0, /* Initial Q: 0 dB */
- 0, /* Mod LFO to Fc: 0 cents */
- 0, /* Mod LFO CC1 to Fc: 0 cents */
- 0, /* Mod LFO channel pressure to Fc: 0 cents */
- 0, /* EG2 to Fc: 0 cents */
- 0, /* Velocity to Fc: 0 cents */
- 0, /* Key number to Fc: 0 cents */
-
- 0, /* Mod LFO to gain: 0 dB */
- 0, /* Mod LFO CC1 to gain: 0 dB */
- 0, /* Mod LFO channel pressure to gain: 0 dB */
- 960, /* Velocity to gain: 96 dB */
-
- 0, /* Tuning: 0 cents */
- 12800, /* Key number to pitch: 12,800 cents */
- 0, /* Vibrato to pitch: 0 cents */
- 0, /* Vibrato CC1 to pitch: 0 cents */
- 0, /* Vibrato channel pressure to pitch: 0 cents */
- 0, /* Mod LFO to pitch: 0 cents */
- 0, /* Mod LFO CC1 to pitch: 0 cents */
- 0, /* Mod LFO channel pressure to pitch: 0 cents */
- 0, /* Mod EG to pitch: 0 cents */
-
- 0, /* Default pan: 0.0% */
- 0, /* Default reverb send: 0.0% */
- 1000, /* Default CC91 to reverb send: 100.0% */
- 0, /* Default chorus send: 0.0% */
- 1000 /* Default CC93 to chorus send: 100.0% */
-};
-
-/*------------------------------------
- * local variables
- *------------------------------------
-*/
-
-#if defined(_8_BIT_SAMPLES)
-static const EAS_INT bitDepth = 8;
-#elif defined(_16_BIT_SAMPLES)
-static const EAS_INT bitDepth = 16;
-#else
-#error "Must define _8_BIT_SAMPLES or _16_BIT_SAMPLES"
-#endif
-
-static const EAS_U32 outputSampleRate = _OUTPUT_SAMPLE_RATE;
-static const EAS_I32 dlsRateConvert = DLS_RATE_CONVERT;
-static const EAS_I32 dlsLFOFrequencyConvert = DLS_LFO_FREQUENCY_CONVERT;
-
-/*------------------------------------
- * inline functions
- *------------------------------------
-*/
-EAS_INLINE void *PtrOfs (void *p, EAS_I32 offset)
-{
- return (void*) (((EAS_U8*) p) + offset);
-}
-
-/*------------------------------------
- * prototypes
- *------------------------------------
-*/
-static EAS_RESULT NextChunk (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 *pPos, EAS_U32 *pChunkType, EAS_I32 *pSize);
-static EAS_RESULT Parse_ptbl (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 wsmpPos, EAS_I32 wsmpSize);
-static EAS_RESULT Parse_wave (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U16 waveIndex);
-static EAS_RESULT Parse_wsmp (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_WSMP_DATA *p);
-static EAS_RESULT Parse_fmt (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_WSMP_DATA *p);
-static EAS_RESULT Parse_data (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, S_WSMP_DATA *p, EAS_SAMPLE *pSample);
-static EAS_RESULT Parse_lins(SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size);
-static EAS_RESULT Parse_ins (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size);
-static EAS_RESULT Parse_insh (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U32 *pRgnCount, EAS_U32 *pLocale);
-static EAS_RESULT Parse_lrgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, EAS_U16 artIndex, EAS_U32 numRegions);
-static EAS_RESULT Parse_rgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, EAS_U16 artIndex);
-static EAS_RESULT Parse_rgnh (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_DLS_REGION *pRgn);
-static EAS_RESULT Parse_lart (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, S_DLS_ART_VALUES *pArt);
-static EAS_RESULT Parse_art (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_DLS_ART_VALUES *pArt);
-static EAS_RESULT Parse_wlnk (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U32 *pWaveIndex);
-static EAS_RESULT Parse_cdl (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 size, EAS_U32 *pValue);
-static void Convert_rgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_U16 regionIndex, EAS_U16 artIndex, EAS_U16 waveIndex, S_WSMP_DATA *pWsmp);
-static void Convert_art (SDLS_SYNTHESIZER_DATA *pDLSData, const S_DLS_ART_VALUES *pDLSArt, EAS_U16 artIndex);
-static EAS_I16 ConvertSampleRate (EAS_U32 sampleRate);
-static EAS_I16 ConvertSustain (EAS_I32 sustain);
-static EAS_I16 ConvertLFOPhaseIncrement (EAS_I32 pitchCents);
-static EAS_I8 ConvertPan (EAS_I32 pan);
-static EAS_U8 ConvertQ (EAS_I32 q);
-
-#ifdef _DEBUG_DLS
-static void DumpDLS (S_EAS *pEAS);
-#endif
-
-
-/*----------------------------------------------------------------------------
- * DLSParser ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * Inputs:
- * pEASData - pointer to over EAS data instance
- * fileHandle - file handle for input file
- * offset - offset into file where DLS data starts
- *
- * Outputs:
- * EAS_RESULT
- * ppEAS - address of pointer to alternate EAS wavetable
- *
- *----------------------------------------------------------------------------
-*/
-EAS_RESULT DLSParser (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE fileHandle, EAS_I32 offset, EAS_DLSLIB_HANDLE *ppDLS)
-{
- EAS_RESULT result;
- SDLS_SYNTHESIZER_DATA dls;
- EAS_U32 temp;
- EAS_I32 pos;
- EAS_I32 chunkPos;
- EAS_I32 size;
- EAS_I32 instSize;
- EAS_I32 rgnPoolSize;
- EAS_I32 artPoolSize;
- EAS_I32 waveLenSize;
- EAS_I32 endDLS;
- EAS_I32 wvplPos;
- EAS_I32 wvplSize;
- EAS_I32 linsPos;
- EAS_I32 linsSize;
- EAS_I32 ptblPos;
- EAS_I32 ptblSize;
- void *p;
-
- /* zero counts and pointers */
- EAS_HWMemSet(&dls, 0, sizeof(dls));
-
- /* save file handle and hwInstData to save copying pointers around */
- dls.hwInstData = hwInstData;
- dls.fileHandle = fileHandle;
-
- /* NULL return value in case of error */
- *ppDLS = NULL;
-
- /* seek to start of DLS and read in RIFF tag and set processor endian flag */
- if ((result = EAS_HWFileSeek(dls.hwInstData, dls.fileHandle, offset)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWReadFile(dls.hwInstData, dls.fileHandle, &temp, sizeof(temp), &size)) != EAS_SUCCESS)
- return result;
-
- /* check for processor endian-ness */
- dls.bigEndian = (temp == CHUNK_RIFF);
-
- /* first chunk should be DLS */
- pos = offset;
- if ((result = NextChunk(&dls, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
- if (temp != CHUNK_DLS)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Expected DLS chunk, got %08lx\n", temp); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* no instrument or wavepool chunks */
- linsSize = wvplSize = ptblSize = linsPos = wvplPos = ptblPos = 0;
-
- /* scan the chunks in the DLS list */
- endDLS = offset + size;
- pos = offset + 12;
- while (pos < endDLS)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(&dls, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* parse useful chunks */
- switch (temp)
- {
- case CHUNK_CDL:
- if ((result = Parse_cdl(&dls, size, &temp)) != EAS_SUCCESS)
- return result;
- if (!temp)
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- break;
-
- case CHUNK_LINS:
- linsPos = chunkPos + 12;
- linsSize = size - 4;
- break;
-
- case CHUNK_WVPL:
- wvplPos = chunkPos + 12;
- wvplSize = size - 4;
- break;
-
- case CHUNK_PTBL:
- ptblPos = chunkPos + 8;
- ptblSize = size - 4;
- break;
-
- default:
- break;
- }
- }
-
- /* must have a lins chunk */
- if (linsSize == 0)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "No lins chunk found"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* must have a wvpl chunk */
- if (wvplSize == 0)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "No wvpl chunk found"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* must have a ptbl chunk */
- if ((ptblSize == 0) || (ptblSize > DLS_MAX_WAVE_COUNT * sizeof(POOLCUE) + sizeof(POOLTABLE)))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "No ptbl chunk found"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* pre-parse the wave pool chunk */
- if ((result = Parse_ptbl(&dls, ptblPos, wvplPos, wvplSize)) != EAS_SUCCESS)
- return result;
-
- /* limit check */
- if ((dls.waveCount == 0) || (dls.waveCount > DLS_MAX_WAVE_COUNT))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS file contains invalid #waves [%u]\n", dls.waveCount); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* allocate memory for wsmp data */
- dls.wsmpData = EAS_HWMalloc(dls.hwInstData, (EAS_I32) (sizeof(S_WSMP_DATA) * dls.waveCount));
- if (dls.wsmpData == NULL)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_HWMalloc for wsmp data failed\n"); */ }
- return EAS_ERROR_MALLOC_FAILED;
- }
- EAS_HWMemSet(dls.wsmpData, 0, (EAS_I32) (sizeof(S_WSMP_DATA) * dls.waveCount));
-
- /* pre-parse the lins chunk */
- result = Parse_lins(&dls, linsPos, linsSize);
- if (result == EAS_SUCCESS)
- {
-
- /* limit check */
- if ((dls.regionCount == 0) || (dls.regionCount > DLS_MAX_REGION_COUNT))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS file contains invalid #regions [%u]\n", dls.regionCount); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* limit check */
- if ((dls.artCount == 0) || (dls.artCount > DLS_MAX_ART_COUNT))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS file contains invalid #articulations [%u]\n", dls.regionCount); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* limit check */
- if ((dls.instCount == 0) || (dls.instCount > DLS_MAX_INST_COUNT))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS file contains invalid #instruments [%u]\n", dls.instCount); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* Allocate memory for the converted DLS data */
- /* calculate size of instrument data */
- instSize = (EAS_I32) (sizeof(S_PROGRAM) * dls.instCount);
-
- /* calculate size of region pool */
- rgnPoolSize = (EAS_I32) (sizeof(S_DLS_REGION) * dls.regionCount);
-
- /* calculate size of articulation pool, add one for default articulation */
- dls.artCount++;
- artPoolSize = (EAS_I32) (sizeof(S_DLS_ARTICULATION) * dls.artCount);
-
- /* calculate size of wave length and offset arrays */
- waveLenSize = (EAS_I32) (dls.waveCount * sizeof(EAS_U32));
-
- /* calculate final memory size */
- size = (EAS_I32) sizeof(S_EAS) + instSize + rgnPoolSize + artPoolSize + (2 * waveLenSize) + (EAS_I32) dls.wavePoolSize;
- if (size <= 0) {
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* allocate the main EAS chunk */
- dls.pDLS = EAS_HWMalloc(dls.hwInstData, size);
- if (dls.pDLS == NULL)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_HWMalloc failed for DLS memory allocation size %ld\n", size); */ }
- return EAS_ERROR_MALLOC_FAILED;
- }
- EAS_HWMemSet(dls.pDLS, 0, size);
- dls.pDLS->refCount = 1;
- p = PtrOfs(dls.pDLS, sizeof(S_EAS));
-
- /* setup pointer to programs */
- dls.pDLS->numDLSPrograms = (EAS_U16) dls.instCount;
- dls.pDLS->pDLSPrograms = p;
- p = PtrOfs(p, instSize);
-
- /* setup pointer to regions */
- dls.pDLS->pDLSRegions = p;
- dls.pDLS->numDLSRegions = (EAS_U16) dls.regionCount;
- p = PtrOfs(p, rgnPoolSize);
-
- /* setup pointer to articulations */
- dls.pDLS->numDLSArticulations = (EAS_U16) dls.artCount;
- dls.pDLS->pDLSArticulations = p;
- p = PtrOfs(p, artPoolSize);
-
- /* setup pointer to wave length table */
- dls.pDLS->numDLSSamples = (EAS_U16) dls.waveCount;
- dls.pDLS->pDLSSampleLen = p;
- p = PtrOfs(p, waveLenSize);
-
- /* setup pointer to wave offsets table */
- dls.pDLS->pDLSSampleOffsets = p;
- p = PtrOfs(p, waveLenSize);
-
- /* setup pointer to wave pool */
- dls.pDLS->pDLSSamples = p;
-
- /* clear filter flag */
- dls.filterUsed = EAS_FALSE;
-
- /* parse the wave pool and load samples */
- result = Parse_ptbl(&dls, ptblPos, wvplPos, wvplSize);
- }
-
- /* create the default articulation */
- Convert_art(&dls, &defaultArt, 0);
- dls.artCount = 1;
-
- /* parse the lins chunk and load instruments */
- dls.regionCount = dls.instCount = 0;
- if (result == EAS_SUCCESS)
- result = Parse_lins(&dls, linsPos, linsSize);
-
- /* clean up any temporary objects that were allocated */
- if (dls.wsmpData)
- EAS_HWFree(dls.hwInstData, dls.wsmpData);
-
- /* if successful, return a pointer to the EAS collection */
- if (result == EAS_SUCCESS)
- {
- *ppDLS = dls.pDLS;
-#ifdef _DEBUG_DLS
- DumpDLS(dls.pDLS);
-#endif
- }
-
- /* something went wrong, deallocate the EAS collection */
- else
- DLSCleanup(dls.hwInstData, dls.pDLS);
-
- return result;
-}
-
-/*----------------------------------------------------------------------------
- * DLSCleanup ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * Inputs:
- * pEASData - pointer to over EAS data instance
- * pEAS - pointer to alternate EAS wavetable
- *
- * Outputs:
- * EAS_RESULT
- *
- *----------------------------------------------------------------------------
-*/
-EAS_RESULT DLSCleanup (EAS_HW_DATA_HANDLE hwInstData, S_DLS *pDLS)
-{
-
- /* free the allocated memory */
- if (pDLS)
- {
- if (pDLS->refCount)
- {
- if (--pDLS->refCount == 0)
- EAS_HWFree(hwInstData, pDLS);
- }
- }
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * DLSAddRef ()
- *----------------------------------------------------------------------------
- * Increment reference count
- *----------------------------------------------------------------------------
-*/
-void DLSAddRef (S_DLS *pDLS)
-{
- if (pDLS)
- pDLS->refCount++;
-}
-
-/*----------------------------------------------------------------------------
- * NextChunk ()
- *----------------------------------------------------------------------------
- * Purpose:
- * Returns the type and size of the next chunk in the file
- *
- * Inputs:
- *
- * Outputs:
- *
- * Side Effects:
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT NextChunk (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 *pPos, EAS_U32 *pChunkType, EAS_I32 *pSize)
-{
- EAS_RESULT result;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, *pPos)) != EAS_SUCCESS)
- return result;
-
- /* read the chunk type */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, pChunkType, EAS_TRUE)) != EAS_SUCCESS)
- return result;
-
- /* read the chunk size */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, pSize, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get form type for RIFF and LIST types */
- if ((*pChunkType == CHUNK_RIFF) || (*pChunkType == CHUNK_LIST))
- {
-
- /* read the form type */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, pChunkType, EAS_TRUE)) != EAS_SUCCESS)
- return result;
-
- }
-
- /* calculate start of next chunk */
- *pPos += *pSize + 8;
-
- /* adjust to word boundary */
- if (*pPos & 1)
- (*pPos)++;
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_ptbl ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_ptbl (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 wtblPos, EAS_I32 wtblSize)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_FILE_HANDLE tempFile;
- EAS_U16 waveIndex;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get the structure size */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &temp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get the number of waves */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &pDLSData->waveCount, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
-#if 0
- /* just need the wave count on the first pass */
- if (!pDLSData->pDLS)
- return EAS_SUCCESS;
-#endif
-
- /* open duplicate file handle */
- if ((result = EAS_HWDupHandle(pDLSData->hwInstData, pDLSData->fileHandle, &tempFile)) != EAS_SUCCESS)
- return result;
-
- /* read to end of chunk */
- for (waveIndex = 0; waveIndex < pDLSData->waveCount; waveIndex++)
- {
-
- /* get the offset to the wave and make sure it is within the wtbl chunk */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, tempFile, &temp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if (temp > (EAS_U32) wtblSize)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Ptbl offset exceeds size of wtbl\n"); */ }
- EAS_HWCloseFile(pDLSData->hwInstData, tempFile);
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* parse the wave */
- if ((result = Parse_wave(pDLSData, wtblPos +(EAS_I32) temp, waveIndex)) != EAS_SUCCESS)
- return result;
- }
-
- /* close the temporary handle and return */
- EAS_HWCloseFile(pDLSData->hwInstData, tempFile);
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_wave ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_wave (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U16 waveIndex)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 size;
- EAS_I32 endChunk;
- EAS_I32 chunkPos;
- EAS_I32 wsmpPos = 0;
- EAS_I32 fmtPos = 0;
- EAS_I32 dataPos = 0;
- EAS_I32 dataSize = 0;
- S_WSMP_DATA *p;
- void *pSample;
- S_WSMP_DATA wsmp;
-
- /* seek to start of chunk */
- chunkPos = pos + 12;
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get the chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* make sure it is a wave chunk */
- if (temp != CHUNK_WAVE)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Offset in ptbl does not point to wave chunk\n"); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* read to end of chunk */
- pos = chunkPos;
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* parse useful chunks */
- switch (temp)
- {
- case CHUNK_WSMP:
- wsmpPos = chunkPos + 8;
- break;
-
- case CHUNK_FMT:
- fmtPos = chunkPos + 8;
- break;
-
- case CHUNK_DATA:
- dataPos = chunkPos + 8;
- dataSize = size;
- break;
-
- default:
- break;
- }
- }
-
- // limit to reasonable size
- if (dataSize > MAX_DLS_WAVE_SIZE)
- {
- return EAS_ERROR_SOUND_LIBRARY;
- }
-
- /* for first pass, use temporary variable */
- if (pDLSData->pDLS == NULL)
- p = &wsmp;
- else
- p = &pDLSData->wsmpData[waveIndex];
-
- /* set the defaults */
- p->fineTune = 0;
- p->unityNote = 60;
- p->gain = 0;
- p->loopStart = 0;
- p->loopLength = 0;
-
- /* must have a fmt chunk */
- if (!fmtPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS wave chunk has no fmt chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* must have a data chunk */
- if (!dataPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS wave chunk has no data chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* parse the wsmp chunk */
- if (wsmpPos)
- {
- if ((result = Parse_wsmp(pDLSData, wsmpPos, p)) != EAS_SUCCESS)
- return result;
- }
-
- /* parse the fmt chunk */
- if ((result = Parse_fmt(pDLSData, fmtPos, p)) != EAS_SUCCESS)
- return result;
-
- /* calculate the size of the wavetable needed. We need only half
- * the memory for 16-bit samples when in 8-bit mode, and we need
- * double the memory for 8-bit samples in 16-bit mode. For
- * unlooped samples, we may use ADPCM. If so, we need only 1/4
- * the memory.
- *
- * We also need to add one for looped samples to allow for
- * the first sample to be copied to the end of the loop.
- */
-
- /* use ADPCM encode for unlooped 16-bit samples if ADPCM is enabled */
- /*lint -e{506} -e{774} groundwork for future version to support 8 & 16 bit */
- if (bitDepth == 8)
- {
- if (p->bitsPerSample == 8)
- size = dataSize;
- else
- /*lint -e{704} use shift for performance */
- size = dataSize >> 1;
- if (p->loopLength)
- size++;
- }
-
- else
- {
- if (p->bitsPerSample == 16)
- size = dataSize;
- else
- /*lint -e{703} use shift for performance */
- size = dataSize << 1;
- if (p->loopLength)
- size += 2;
- }
-
- /* for first pass, add size to wave pool size and return */
- if (pDLSData->pDLS == NULL)
- {
- pDLSData->wavePoolSize += (EAS_U32) size;
- return EAS_SUCCESS;
- }
-
- /* allocate memory and read in the sample data */
- pSample = pDLSData->pDLS->pDLSSamples + pDLSData->wavePoolOffset;
- pDLSData->pDLS->pDLSSampleOffsets[waveIndex] = pDLSData->wavePoolOffset;
- pDLSData->pDLS->pDLSSampleLen[waveIndex] = (EAS_U32) size;
- pDLSData->wavePoolOffset += (EAS_U32) size;
- if (pDLSData->wavePoolOffset > pDLSData->wavePoolSize)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Wave pool exceeded allocation\n"); */ }
- return EAS_ERROR_SOUND_LIBRARY;
- }
-
- if ((result = Parse_data(pDLSData, dataPos, dataSize, p, pSample)) != EAS_SUCCESS)
- return result;
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_wsmp ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_wsmp (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_WSMP_DATA *p)
-{
- EAS_RESULT result;
- EAS_U16 wtemp;
- EAS_U32 ltemp;
- EAS_U32 cbSize;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get structure size */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &cbSize, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get unity note */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &wtemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if (wtemp <= 127)
- p->unityNote = (EAS_U8) wtemp;
- else
- {
- p->unityNote = 60;
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Invalid unity note [%u] in DLS wsmp ignored, set to 60\n", wtemp); */ }
- }
-
- /* get fine tune */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->fineTune, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get gain */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->gain, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if (p->gain > 0)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Positive gain [%ld] in DLS wsmp ignored, set to 0dB\n", p->gain); */ }
- p->gain = 0;
- }
-
- /* option flags */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &ltemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* sample loops */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &ltemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* if looped sample, get loop data */
- if (ltemp)
- {
-
- if (ltemp > 1)
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS sample with %lu loops, ignoring extra loops\n", ltemp); */ }
-
- /* skip ahead to loop data */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos + (EAS_I32) cbSize)) != EAS_SUCCESS)
- return result;
-
- /* get structure size */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &ltemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get loop type */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &ltemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get loop start */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->loopStart, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get loop length */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->loopLength, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_fmt ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_fmt (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_WSMP_DATA *p)
-{
- EAS_RESULT result;
- EAS_U16 wtemp;
- EAS_U32 ltemp;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get format tag */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &wtemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if (wtemp != WAVE_FORMAT_PCM)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Unsupported DLS sample format %04x\n", wtemp); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* get number of channels */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &wtemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if (wtemp != 1)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "No support for DLS multi-channel samples\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* get sample rate */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->sampleRate, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* bytes/sec */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &ltemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* block align */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &wtemp, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* bits/sample */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &p->bitsPerSample, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- if ((p->bitsPerSample != 8) && (p->bitsPerSample != 16))
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Unsupported DLS bits-per-sample %d\n", p->bitsPerSample); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- return EAS_SUCCESS;
-}
-
-#if defined( _8_BIT_SAMPLES)
-/*----------------------------------------------------------------------------
- * Parse_data ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * NOTE: The optimized assembly versions of the interpolator require
- * an extra sample at the end of the loop - a copy of the first
- * sample. This routine must allocate an extra sample of data and
- * copy the first sample of the loop to the end.
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_data (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, S_WSMP_DATA *pWsmp, EAS_SAMPLE *pSample)
-{
- EAS_RESULT result;
- EAS_U8 convBuf[SAMPLE_CONVERT_CHUNK_SIZE];
- EAS_I32 count;
- EAS_I32 i;
- EAS_I8 *p;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* 8-bit samples in an 8-bit synth, just copy the data, and flip bit 7 */
- p = pSample;
- if (pWsmp->bitsPerSample == 8)
- {
- if ((result = EAS_HWReadFile(pDLSData->hwInstData, pDLSData->fileHandle, pSample, size, &count)) != EAS_SUCCESS)
- return result;
- for (i = 0; i < size; i++)
- /*lint -e{734} convert from unsigned to signed audio */
- *p++ ^= 0x80;
- }
-
- /* 16-bit samples, need to convert to 8-bit or ADPCM */
- else
- {
-
- while (size)
- {
- EAS_I8 *pInput;
-
- /* for undithered conversion, we're just copying the 8-bit data */
- if (pDLSData->bigEndian)
- pInput = (EAS_I8*) convBuf;
- else
- pInput = (EAS_I8*) convBuf + 1;
-
- /* read a small chunk of data and convert it */
- count = (size < SAMPLE_CONVERT_CHUNK_SIZE ? size : SAMPLE_CONVERT_CHUNK_SIZE);
- if ((result = EAS_HWReadFile(pDLSData->hwInstData, pDLSData->fileHandle, convBuf, count, &count)) != EAS_SUCCESS)
- return result;
- size -= count;
- /*lint -e{704} use shift for performance */
- count = count >> 1;
-
- while (count--)
- {
- *p++ = *pInput;
- pInput += 2;
- }
- }
- }
-
- /* for looped samples, copy the last sample to the end */
- if (pWsmp->loopLength)
- pSample[pWsmp->loopStart + pWsmp->loopLength] = pSample[pWsmp->loopStart];
-
- return EAS_SUCCESS;
-}
-#elif defined(_16_BIT_SAMPLES)
-#error "16-bit DLS conversion not implemented yet"
-#else
-#error "Must specifiy _8_BIT_SAMPLES or _16_BIT_SAMPLES"
-#endif
-
-/*----------------------------------------------------------------------------
- * Parse_lins ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_lins (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 endChunk;
- EAS_I32 chunkPos;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* read to end of chunk */
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* only instrument chunks are useful */
- if (temp != CHUNK_INS)
- continue;
-
- if ((result = Parse_ins(pDLSData, chunkPos + 12, size)) != EAS_SUCCESS)
- return result;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_ins ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_ins (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 chunkPos;
- EAS_I32 endChunk;
- EAS_I32 lrgnPos;
- EAS_I32 lrgnSize;
- EAS_I32 lartPos;
- EAS_I32 lartSize;
- EAS_I32 lar2Pos;
- EAS_I32 lar2Size;
- EAS_I32 inshPos;
- EAS_U32 regionCount;
- EAS_U32 locale;
- S_DLS_ART_VALUES art;
- S_PROGRAM *pProgram;
- EAS_U16 artIndex;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* no chunks yet */
- lrgnPos = lrgnSize = lartPos = lartSize = lar2Pos = lar2Size = inshPos = artIndex = 0;
-
- /* read to end of chunk */
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* parse useful chunks */
- switch (temp)
- {
- case CHUNK_INSH:
- inshPos = chunkPos + 8;
- break;
-
- case CHUNK_LART:
- lartPos = chunkPos + 12;
- lartSize = size;
- break;
-
- case CHUNK_LAR2:
- lar2Pos = chunkPos + 12;
- lar2Size = size;
- break;
-
- case CHUNK_LRGN:
- lrgnPos = chunkPos + 12;
- lrgnSize = size;
- break;
-
- default:
- break;
- }
- }
-
- /* must have an lrgn to be useful */
- if (!lrgnPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS ins chunk has no lrgn chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* must have an insh to be useful */
- if (!inshPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS ins chunk has no insh chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* parse the instrument header */
- if ((result = Parse_insh(pDLSData, inshPos, &regionCount, &locale)) != EAS_SUCCESS)
- return result;
-
- /* initialize and parse the global data first */
- EAS_HWMemCpy(&art, &defaultArt, sizeof(S_DLS_ART_VALUES));
- if (lartPos)
- if ((result = Parse_lart(pDLSData, lartPos, lartSize, &art)) != EAS_SUCCESS)
- return result;
- if (lar2Pos)
- if ((result = Parse_lart(pDLSData, lar2Pos, lar2Size, &art)) != EAS_SUCCESS)
- return result;
-
- if (art.values[PARAM_MODIFIED])
- {
- artIndex = (EAS_U16) pDLSData->artCount;
- pDLSData->artCount++;
- }
-
- /* convert data on second pass */
- if (pDLSData->pDLS)
- {
-
- if (art.values[PARAM_MODIFIED])
- Convert_art(pDLSData, &art, artIndex);
-
- /* setup pointers */
- pProgram = &pDLSData->pDLS->pDLSPrograms[pDLSData->instCount];
-
- /* initialize instrument */
- pProgram->locale = locale;
- pProgram->regionIndex = (EAS_U16) pDLSData->regionCount | FLAG_RGN_IDX_DLS_SYNTH;
-
- }
-
- /* parse the region data */
- if ((result = Parse_lrgn(pDLSData, lrgnPos, lrgnSize, artIndex, regionCount)) != EAS_SUCCESS)
- return result;
-
- /* bump instrument count */
- pDLSData->instCount++;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_insh ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_insh (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U32 *pRgnCount, EAS_U32 *pLocale)
-{
- EAS_RESULT result;
- EAS_U32 bank;
- EAS_U32 program;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get the region count and locale */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, pRgnCount, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &bank, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &program, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* verify the parameters are valid */
- if (bank & 0x7fff8080)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS bank number is out of range: %08lx\n", bank); */ }
- bank &= 0xff7f;
- }
- if (program > 127)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS program number is out of range: %08lx\n", program); */ }
- program &= 0x7f;
- }
-
- /* save the program number */
- *pLocale = (bank << 8) | program;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_lrgn ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_lrgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, EAS_U16 artIndex, EAS_U32 numRegions)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 chunkPos;
- EAS_I32 endChunk;
- EAS_U16 regionCount;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* read to end of chunk */
- regionCount = 0;
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- if ((temp == CHUNK_RGN) || (temp == CHUNK_RGN2))
- {
- if (regionCount == numRegions)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS region count exceeded cRegions value in insh, extra region ignored\n"); */ }
- return EAS_SUCCESS;
- }
- if ((result = Parse_rgn(pDLSData, chunkPos + 12, size, artIndex)) != EAS_SUCCESS)
- return result;
- regionCount++;
- }
- }
-
- /* set a flag in the last region */
- if ((pDLSData->pDLS != NULL) && (regionCount > 0))
- pDLSData->pDLS->pDLSRegions[pDLSData->regionCount - 1].wtRegion.region.keyGroupAndFlags |= REGION_FLAG_LAST_REGION;
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_rgn ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_rgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, EAS_U16 artIndex)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 chunkPos;
- EAS_I32 endChunk;
- EAS_I32 rgnhPos;
- EAS_I32 lartPos;
- EAS_I32 lartSize;
- EAS_I32 lar2Pos;
- EAS_I32 lar2Size;
- EAS_I32 wlnkPos;
- EAS_I32 wsmpPos;
- EAS_U32 waveIndex;
- S_DLS_ART_VALUES art;
- S_WSMP_DATA wsmp;
- S_WSMP_DATA *pWsmp;
- EAS_U16 regionIndex;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* no chunks found yet */
- rgnhPos = lartPos = lartSize = lar2Pos = lar2Size = wsmpPos = wlnkPos = 0;
- regionIndex = (EAS_U16) pDLSData->regionCount;
-
- /* read to end of chunk */
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* parse useful chunks */
- switch (temp)
- {
- case CHUNK_CDL:
- if ((result = Parse_cdl(pDLSData, size, &temp)) != EAS_SUCCESS)
- return result;
-
- /* if conditional chunk evaluates false, skip this list */
- if (!temp)
- return EAS_SUCCESS;
- break;
-
- case CHUNK_RGNH:
- rgnhPos = chunkPos + 8;
- break;
-
- case CHUNK_WLNK:
- wlnkPos = chunkPos + 8;
- break;
-
- case CHUNK_WSMP:
- wsmpPos = chunkPos + 8;
- break;
-
- case CHUNK_LART:
- lartPos = chunkPos + 12;
- lartSize = size;
- break;
-
- case CHUNK_LAR2:
- lar2Pos = chunkPos + 12;
- lar2Size = size;
- break;
-
- default:
- break;
- }
- }
-
- /* must have a rgnh chunk to be useful */
- if (!rgnhPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS rgn chunk has no rgnh chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* must have a wlnk chunk to be useful */
- if (!wlnkPos)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "DLS rgn chunk has no wlnk chunk\n"); */ }
- return EAS_ERROR_UNRECOGNIZED_FORMAT;
- }
-
- /* parse wlnk chunk */
- if ((result = Parse_wlnk(pDLSData, wlnkPos, &waveIndex)) != EAS_SUCCESS)
- return result;
- pWsmp = &pDLSData->wsmpData[waveIndex];
-
- /* if there is any articulation data, parse it */
- EAS_HWMemCpy(&art, &defaultArt, sizeof(S_DLS_ART_VALUES));
- if (lartPos)
- {
- if ((result = Parse_lart(pDLSData, lartPos, lartSize, &art)) != EAS_SUCCESS)
- return result;
- }
-
- if (lar2Pos)
- {
- if ((result = Parse_lart(pDLSData, lar2Pos, lar2Size, &art)) != EAS_SUCCESS)
- return result;
- }
-
- /* if second pass, process region header */
- if (pDLSData->pDLS)
- {
-
- /* if local data was found convert it */
- if (art.values[PARAM_MODIFIED] == EAS_TRUE)
- {
- Convert_art(pDLSData, &art, (EAS_U16) pDLSData->artCount);
- artIndex = (EAS_U16) pDLSData->artCount;
- }
-
- /* parse region header */
- if ((result = Parse_rgnh(pDLSData, rgnhPos, &pDLSData->pDLS->pDLSRegions[regionIndex & REGION_INDEX_MASK])) != EAS_SUCCESS)
- return result;
-
- /* parse wsmp chunk, copying parameters from original first */
- if (wsmpPos)
- {
- EAS_HWMemCpy(&wsmp, pWsmp, sizeof(wsmp));
- if ((result = Parse_wsmp(pDLSData, wsmpPos, &wsmp)) != EAS_SUCCESS)
- return result;
-
- pWsmp = &wsmp;
- }
-
- Convert_rgn(pDLSData, regionIndex, artIndex, (EAS_U16) waveIndex, pWsmp);
- }
-
- /* if local articulation, bump count */
- if (art.values[PARAM_MODIFIED])
- pDLSData->artCount++;
-
- /* increment region count */
- pDLSData->regionCount++;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_rgnh ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_rgnh (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_DLS_REGION *pRgn)
-{
- EAS_RESULT result;
- EAS_U16 lowKey;
- EAS_U16 highKey;
- EAS_U16 lowVel;
- EAS_U16 highVel;
- EAS_U16 optionFlags;
- EAS_U16 keyGroup;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get the key range */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &lowKey, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &highKey, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* check the range */
- if (lowKey > 127)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS rgnh: Low key out of range [%u]\n", lowKey); */ }
- lowKey = 127;
- }
- if (highKey > 127)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS rgnh: High key out of range [%u]\n", lowKey); */ }
- highKey = 127;
- }
-
- /* get the velocity range */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &lowVel, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &highVel, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* check the range */
- if (lowVel > 127)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS rgnh: Low velocity out of range [%u]\n", lowVel); */ }
- lowVel = 127;
- }
- if (highVel > 127)
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "DLS rgnh: High velocity out of range [%u]\n", highVel); */ }
- highVel = 127;
- }
-
- /* get the option flags */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &optionFlags, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* get the key group */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &keyGroup, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* save the key range and key group */
- pRgn->wtRegion.region.rangeLow = (EAS_U8) lowKey;
- pRgn->wtRegion.region.rangeHigh = (EAS_U8) highKey;
-
- /*lint -e{734} keyGroup will always be from 0-15 */
- pRgn->wtRegion.region.keyGroupAndFlags = keyGroup << 8;
- pRgn->velLow = (EAS_U8) lowVel;
- pRgn->velHigh = (EAS_U8) highVel;
- if (optionFlags & F_RGN_OPTION_SELFNONEXCLUSIVE)
- pRgn->wtRegion.region.keyGroupAndFlags |= REGION_FLAG_NON_SELF_EXCLUSIVE;
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_lart ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_lart (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, S_DLS_ART_VALUES *pArt)
-{
- EAS_RESULT result;
- EAS_U32 temp;
- EAS_I32 endChunk;
- EAS_I32 chunkPos;
- EAS_I32 art1Pos;
- EAS_I32 art2Pos;
-
- /* seek to start of chunk */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* no articulation chunks yet */
- art1Pos = art2Pos = 0;
-
- /* read to end of chunk */
- endChunk = pos + size;
- while (pos < endChunk)
- {
- chunkPos = pos;
-
- /* get the next chunk type */
- if ((result = NextChunk(pDLSData, &pos, &temp, &size)) != EAS_SUCCESS)
- return result;
-
- /* parse useful chunks */
- switch (temp)
- {
- case CHUNK_CDL:
- if ((result = Parse_cdl(pDLSData, size, &temp)) != EAS_SUCCESS)
- return result;
-
- /* if conditional chunk evaluates false, skip this list */
- if (!temp)
- return EAS_SUCCESS;
- break;
-
- case CHUNK_ART1:
- art1Pos = chunkPos + 8;
- break;
-
- case CHUNK_ART2:
- art2Pos = chunkPos + 8;
- break;
-
- default:
- break;
-
- }
- }
-
- if (art1Pos)
- {
- if ((result = Parse_art(pDLSData, art1Pos, pArt)) != EAS_SUCCESS)
- return result;
- }
-
- if (art2Pos)
- {
- if ((result = Parse_art(pDLSData, art2Pos, pArt)) != EAS_SUCCESS)
- return result;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_art()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_art (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, S_DLS_ART_VALUES *pArt)
-{
- EAS_RESULT result;
- EAS_U32 structSize;
- EAS_U32 numConnections;
- EAS_U16 source;
- EAS_U16 control;
- EAS_U16 destination;
- EAS_U16 transform;
- EAS_I32 scale;
- EAS_INT i;
-
- /* seek to start of data */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- /* get the structure size */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &structSize, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- pos += (EAS_I32) structSize;
-
- /* get the number of connections */
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &numConnections, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* skip to start of connections */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
- return result;
-
- while (numConnections--)
- {
-
- /* read the connection data */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &source, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &control, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &destination, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &transform, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &scale, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* look up the connection */
- for (i = 0; i < (EAS_INT) ENTRIES_IN_CONN_TABLE; i++)
- {
- if ((connTable[i].source == source) &&
- (connTable[i].destination == destination) &&
- (connTable[i].control == control))
- {
- /*lint -e{704} use shift for performance */
- pArt->values[connTable[i].connection] = (EAS_I16) (scale >> 16);
- pArt->values[PARAM_MODIFIED] = EAS_TRUE;
- break;
- }
- }
- if (i == PARAM_TABLE_SIZE)
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "WARN: Unsupported parameter in DLS file\n"); */ }
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * Parse_wlnk ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_wlnk (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_U32 *pWaveIndex)
-{
- EAS_RESULT result;
-
- /* we only care about the the index */
- if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos + 8)) != EAS_SUCCESS)
- return result;
-
- /* read the index */
- return EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle,pWaveIndex, EAS_FALSE);
-}
-
-/*----------------------------------------------------------------------------
- * PopcdlStack ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT PopcdlStack (EAS_U32 *pStack, EAS_INT *pStackPtr, EAS_U32 *pValue)
-{
-
- /* stack underflow, cdl block has an errorr */
- if (*pStackPtr < 0)
- return EAS_ERROR_FILE_FORMAT;
-
- /* pop the value off the stack */
- *pValue = pStack[*pStackPtr];
- *pStackPtr = *pStackPtr - 1;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * PushcdlStack ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT PushcdlStack (EAS_U32 *pStack, EAS_INT *pStackPtr, EAS_U32 value)
-{
-
- /* stack overflow, return an error */
- if (*pStackPtr >= CDL_STACK_SIZE)
- return EAS_ERROR_FILE_FORMAT;
-
- /* push the value onto the stack */
- *pStackPtr = *pStackPtr + 1;
- pStack[*pStackPtr] = value;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * QueryGUID ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_BOOL QueryGUID (const DLSID *pGUID, EAS_U32 *pValue)
-{
-
- /* assume false */
- *pValue = 0;
- if (EAS_HWMemCmp(&DLSID_GMInHardware, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = 0xffffffff;
- return EAS_TRUE;
- }
-
- if (EAS_HWMemCmp(&DLSID_GSInHardware, pGUID, sizeof(DLSID)) == 0)
- return EAS_TRUE;
-
- if (EAS_HWMemCmp(&DLSID_XGInHardware, pGUID, sizeof(DLSID)) == 0)
- return EAS_TRUE;
-
- if (EAS_HWMemCmp(&DLSID_SupportsDLS1, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = 0xffffffff;
- return EAS_TRUE;
- }
-
- if (EAS_HWMemCmp(&DLSID_SupportsDLS2, pGUID, sizeof(DLSID)) == 0)
- return EAS_TRUE;
-
- if (EAS_HWMemCmp(&DLSID_SampleMemorySize, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = MAX_DLS_MEMORY;
- return EAS_TRUE;
- }
-
- if (EAS_HWMemCmp(&DLSID_ManufacturersID, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = 0x0000013A;
- return EAS_TRUE;
- }
-
- if (EAS_HWMemCmp(&DLSID_ProductID, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = LIB_VERSION;
- return EAS_TRUE;
- }
-
- if (EAS_HWMemCmp(&DLSID_SamplePlaybackRate, pGUID, sizeof(DLSID)) == 0)
- {
- *pValue = (EAS_U32) outputSampleRate;
- return EAS_TRUE;
- }
-
- /* unrecognized DLSID */
- return EAS_FALSE;
-}
-
-/*----------------------------------------------------------------------------
- * ReadDLSID ()
- *----------------------------------------------------------------------------
- * Purpose:
- * Reads a DLSID in a manner that is not sensitive to processor endian-ness
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT ReadDLSID (SDLS_SYNTHESIZER_DATA *pDLSData, DLSID *pDLSID)
-{
- EAS_RESULT result;
- EAS_I32 n;
-
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &pDLSID->Data1, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &pDLSID->Data2, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &pDLSID->Data3, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- return EAS_HWReadFile(pDLSData->hwInstData, pDLSData->fileHandle, pDLSID->Data4, sizeof(pDLSID->Data4), &n);
-}
-
-/*----------------------------------------------------------------------------
- * Parse_cdl ()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT Parse_cdl (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 size, EAS_U32 *pValue)
-{
- EAS_RESULT result;
- EAS_U32 stack[CDL_STACK_SIZE];
- EAS_U16 opcode;
- EAS_INT stackPtr;
- EAS_U32 x, y;
- DLSID dlsid;
-
- stackPtr = -1;
- *pValue = 0;
- x = 0;
- while (size)
- {
- /* read the opcode */
- if ((result = EAS_HWGetWord(pDLSData->hwInstData, pDLSData->fileHandle, &opcode, EAS_FALSE)) != EAS_SUCCESS)
- return result;
-
- /* handle binary opcodes */
- if (opcode <= DLS_CDL_EQ)
- {
- /* pop X and Y */
- if ((result = PopcdlStack(stack, &stackPtr, &x)) != EAS_SUCCESS)
- return result;
- if ((result = PopcdlStack(stack, &stackPtr, &y)) != EAS_SUCCESS)
- return result;
- switch (opcode)
- {
- case DLS_CDL_AND:
- x = x & y;
- break;
- case DLS_CDL_OR:
- x = x | y;
- break;
- case DLS_CDL_XOR:
- x = x ^ y;
- break;
- case DLS_CDL_ADD:
- x = x + y;
- break;
- case DLS_CDL_SUBTRACT:
- x = x - y;
- break;
- case DLS_CDL_MULTIPLY:
- x = x * y;
- break;
- case DLS_CDL_DIVIDE:
- if (!y)
- return EAS_ERROR_FILE_FORMAT;
- x = x / y;
- break;
- case DLS_CDL_LOGICAL_AND:
- x = (x && y);
- break;
- case DLS_CDL_LOGICAL_OR:
- x = (x || y);
- break;
- case DLS_CDL_LT:
- x = (x < y);
- break;
- case DLS_CDL_LE:
- x = (x <= y);
- break;
- case DLS_CDL_GT:
- x = (x > y);
- break;
- case DLS_CDL_GE:
- x = (x >= y);
- break;
- case DLS_CDL_EQ:
- x = (x == y);
- break;
- default:
- break;
- }
- }
-
- else if (opcode == DLS_CDL_NOT)
- {
- if ((result = PopcdlStack(stack, &stackPtr, &x)) != EAS_SUCCESS)
- return result;
- x = !x;
- }
-
- else if (opcode == DLS_CDL_CONST)
- {
- if ((result = EAS_HWGetDWord(pDLSData->hwInstData, pDLSData->fileHandle, &x, EAS_FALSE)) != EAS_SUCCESS)
- return result;
- }
-
- else if (opcode == DLS_CDL_QUERY)
- {
- if ((result = ReadDLSID(pDLSData, &dlsid)) != EAS_SUCCESS)
- return result;
- QueryGUID(&dlsid, &x);
- }
-
- else if (opcode == DLS_CDL_QUERYSUPPORTED)
- {
- if ((result = ReadDLSID(pDLSData, &dlsid)) != EAS_SUCCESS)
- return result;
- x = QueryGUID(&dlsid, &y);
- }
- else
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Unsupported opcode %d in DLS file\n", opcode); */ }
-
- /* push the result on the stack */
- if ((result = PushcdlStack(stack, &stackPtr, x)) != EAS_SUCCESS)
- return result;
- }
-
- /* pop the last result off the stack */
- return PopcdlStack(stack, &stackPtr, pValue);
-}
-
-/*----------------------------------------------------------------------------
- * Convert_rgn()
- *----------------------------------------------------------------------------
- * Purpose:
- * Convert region data from DLS to EAS
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static void Convert_rgn (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_U16 regionIndex, EAS_U16 artIndex, EAS_U16 waveIndex, S_WSMP_DATA *pWsmp)
-{
- S_DLS_REGION *pRgn;
-
- /* setup pointers to data structures */
- pRgn = &pDLSData->pDLS->pDLSRegions[regionIndex];
-
- /* intiailize indices */
- pRgn->wtRegion.artIndex = artIndex;
- pRgn->wtRegion.waveIndex = waveIndex;
-
- /* convert region data */
- /*lint -e{704} use shift for performance */
- pRgn->wtRegion.gain = (EAS_I16) (pWsmp->gain >> 16);
- pRgn->wtRegion.loopStart = pWsmp->loopStart;
- pRgn->wtRegion.loopEnd = (pWsmp->loopStart + pWsmp->loopLength);
- pRgn->wtRegion.tuning = pWsmp->fineTune -(pWsmp->unityNote * 100) + ConvertSampleRate(pWsmp->sampleRate);
- if (pWsmp->loopLength != 0)
- pRgn->wtRegion.region.keyGroupAndFlags |= REGION_FLAG_IS_LOOPED;
-}
-
-/*----------------------------------------------------------------------------
- * Convert_art()
- *----------------------------------------------------------------------------
- * Purpose:
- * Convert articulation data from DLS to EAS
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- *----------------------------------------------------------------------------
-*/
-static void Convert_art (SDLS_SYNTHESIZER_DATA *pDLSData, const S_DLS_ART_VALUES *pDLSArt, EAS_U16 artIndex)
-{
- S_DLS_ARTICULATION *pArt;
-
- /* setup pointers to data structures */
- pArt = &pDLSData->pDLS->pDLSArticulations[artIndex];
-
- /* LFO parameters */
- pArt->modLFO.lfoFreq = ConvertLFOPhaseIncrement(pDLSArt->values[PARAM_MOD_LFO_FREQ]);
- pArt->modLFO.lfoDelay = -ConvertDelay(pDLSArt->values[PARAM_MOD_LFO_DELAY]);
- pArt->vibLFO.lfoFreq = ConvertLFOPhaseIncrement(pDLSArt->values[PARAM_VIB_LFO_FREQ]);
- pArt->vibLFO.lfoDelay = -ConvertDelay(pDLSArt->values[PARAM_VIB_LFO_DELAY]);
-
- /* EG1 parameters */
- pArt->eg1.delayTime = ConvertDelay(pDLSArt->values[PARAM_VOL_EG_DELAY]);
- pArt->eg1.attackTime = pDLSArt->values[PARAM_VOL_EG_ATTACK];
- pArt->eg1.holdTime = pDLSArt->values[PARAM_VOL_EG_HOLD];
- pArt->eg1.decayTime = pDLSArt->values[PARAM_VOL_EG_DECAY];
- pArt->eg1.sustainLevel = ConvertSustain(pDLSArt->values[PARAM_VOL_EG_SUSTAIN]);
- pArt->eg1.releaseTime = ConvertRate(pDLSArt->values[PARAM_VOL_EG_RELEASE]);
- pArt->eg1.velToAttack = pDLSArt->values[PARAM_VOL_EG_VEL_TO_ATTACK];
- pArt->eg1.keyNumToDecay = pDLSArt->values[PARAM_VOL_EG_KEY_TO_DECAY];
- pArt->eg1.keyNumToHold = pDLSArt->values[PARAM_VOL_EG_KEY_TO_HOLD];
- pArt->eg1ShutdownTime = ConvertRate(pDLSArt->values[PARAM_VOL_EG_SHUTDOWN]);
-
- /* EG2 parameters */
- pArt->eg2.delayTime = ConvertDelay(pDLSArt->values[PARAM_MOD_EG_DELAY]);
- pArt->eg2.attackTime = pDLSArt->values[PARAM_MOD_EG_ATTACK];
- pArt->eg2.holdTime = pDLSArt->values[PARAM_MOD_EG_HOLD];
- pArt->eg2.decayTime = pDLSArt->values[PARAM_MOD_EG_DECAY];
- pArt->eg2.sustainLevel = ConvertSustain(pDLSArt->values[PARAM_MOD_EG_SUSTAIN]);
- pArt->eg2.releaseTime = ConvertRate(pDLSArt->values[PARAM_MOD_EG_RELEASE]);
- pArt->eg2.velToAttack = pDLSArt->values[PARAM_MOD_EG_VEL_TO_ATTACK];
- pArt->eg2.keyNumToDecay = pDLSArt->values[PARAM_MOD_EG_KEY_TO_DECAY];
- pArt->eg2.keyNumToHold = pDLSArt->values[PARAM_MOD_EG_KEY_TO_HOLD];
-
- /* filter parameters */
- pArt->filterCutoff = pDLSArt->values[PARAM_INITIAL_FC];
- pArt->filterQandFlags = ConvertQ(pDLSArt->values[PARAM_INITIAL_Q]);
- pArt->modLFOToFc = pDLSArt->values[PARAM_MOD_LFO_TO_FC];
- pArt->modLFOCC1ToFc = pDLSArt->values[PARAM_MOD_LFO_CC1_TO_FC];
- pArt->modLFOChanPressToFc = pDLSArt->values[PARAM_MOD_LFO_CHAN_PRESS_TO_FC];
- pArt->eg2ToFc = pDLSArt->values[PARAM_MOD_EG_TO_FC];
- pArt->velToFc = pDLSArt->values[PARAM_VEL_TO_FC];
- pArt->keyNumToFc = pDLSArt->values[PARAM_KEYNUM_TO_FC];
-
- /* gain parameters */
- pArt->modLFOToGain = pDLSArt->values[PARAM_MOD_LFO_TO_GAIN];
- pArt->modLFOCC1ToGain = pDLSArt->values[PARAM_MOD_LFO_CC1_TO_GAIN];
- pArt->modLFOChanPressToGain = pDLSArt->values[PARAM_MOD_LFO_CHAN_PRESS_TO_GAIN];
-
- /* pitch parameters */
- pArt->tuning = pDLSArt->values[PARAM_TUNING];
- pArt->keyNumToPitch = pDLSArt->values[PARAM_KEYNUM_TO_PITCH];
- pArt->vibLFOToPitch = pDLSArt->values[PARAM_VIB_LFO_TO_PITCH];
- pArt->vibLFOCC1ToPitch = pDLSArt->values[PARAM_VIB_LFO_CC1_TO_PITCH];
- pArt->vibLFOChanPressToPitch = pDLSArt->values[PARAM_VIB_LFO_CHAN_PRESS_TO_PITCH];
- pArt->modLFOToPitch = pDLSArt->values[PARAM_MOD_LFO_TO_PITCH];
- pArt->modLFOCC1ToPitch = pDLSArt->values[PARAM_MOD_LFO_CC1_TO_PITCH];
- pArt->modLFOChanPressToPitch = pDLSArt->values[PARAM_MOD_LFO_CHAN_PRESS_TO_PITCH];
- pArt->eg2ToPitch = pDLSArt->values[PARAM_MOD_EG_TO_PITCH];
-
- /* output parameters */
- pArt->pan = ConvertPan(pDLSArt->values[PARAM_DEFAULT_PAN]);
-
- if (pDLSArt->values[PARAM_VEL_TO_GAIN] != 0)
- pArt->filterQandFlags |= FLAG_DLS_VELOCITY_SENSITIVE;
-
-#ifdef _REVERB
- pArt->reverbSend = pDLSArt->values[PARAM_DEFAULT_REVERB_SEND];
- pArt->cc91ToReverbSend = pDLSArt->values[PARAM_MIDI_CC91_TO_REVERB_SEND];
-#endif
-
-#ifdef _CHORUS
- pArt->chorusSend = pDLSArt->values[PARAM_DEFAULT_CHORUS_SEND];
- pArt->cc93ToChorusSend = pDLSArt->values[PARAM_MIDI_CC93_TO_CHORUS_SEND];
-#endif
-}
-
-/*----------------------------------------------------------------------------
- * ConvertSampleRate()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * Inputs:
- *
- * Outputs:
- *
- * Side Effects:
- *----------------------------------------------------------------------------
-*/
-static EAS_I16 ConvertSampleRate (EAS_U32 sampleRate)
-{
- return (EAS_I16) (1200.0 * log10((double) sampleRate / (double) outputSampleRate) / log10(2.0));
-}
-
-/*----------------------------------------------------------------------------
- * ConvertSustainEG2()
- *----------------------------------------------------------------------------
- * Convert sustain level to pitch/Fc multipler for EG2
- *----------------------------------------------------------------------------
-*/
-static EAS_I16 ConvertSustain (EAS_I32 sustain)
-{
- /* check for sustain level of zero */
- if (sustain == 0)
- return 0;
-
- /* convert to log2 factor */
- /*lint -e{704} use shift for performance */
- sustain = (sustain * SUSTAIN_LINEAR_CONVERSION_FACTOR) >> 15;
-
- if (sustain > SYNTH_FULL_SCALE_EG1_GAIN)
- return SYNTH_FULL_SCALE_EG1_GAIN;
- return (EAS_I16) sustain;
-}
-
-/*----------------------------------------------------------------------------
- * ConvertDelay ()
- *----------------------------------------------------------------------------
- * Converts timecents to frame count. Used for LFO and envelope
- * delay times.
- *----------------------------------------------------------------------------
-*/
-EAS_I16 ConvertDelay (EAS_I32 timeCents)
-{
- EAS_I32 temp;
-
- if (timeCents == ZERO_TIME_IN_CENTS)
- return 0;
-
- /* divide time by secs per frame to get number of frames */
- temp = timeCents - dlsRateConvert;
-
- /* convert from time cents to 10-bit fraction */
- temp = FMUL_15x15(temp, TIME_CENTS_TO_LOG2);
-
- /* convert to frame count */
- temp = EAS_LogToLinear16(temp - (15 << 10));
-
- if (temp < SYNTH_FULL_SCALE_EG1_GAIN)
- return (EAS_I16) temp;
- return SYNTH_FULL_SCALE_EG1_GAIN;
-}
-
-/*----------------------------------------------------------------------------
- * ConvertRate ()
- *----------------------------------------------------------------------------
- * Convert timecents to rate
- *----------------------------------------------------------------------------
-*/
-EAS_I16 ConvertRate (EAS_I32 timeCents)
-{
- EAS_I32 temp;
-
- if (timeCents == ZERO_TIME_IN_CENTS)
- return SYNTH_FULL_SCALE_EG1_GAIN;
-
- /* divide frame rate by time in log domain to get rate */
- temp = dlsRateConvert - timeCents;
-
-#if 1
- temp = EAS_Calculate2toX(temp);
-#else
- /* convert from time cents to 10-bit fraction */
- temp = FMUL_15x15(temp, TIME_CENTS_TO_LOG2);
-
- /* convert to rate */
- temp = EAS_LogToLinear16(temp);
-#endif
-
- if (temp < SYNTH_FULL_SCALE_EG1_GAIN)
- return (EAS_I16) temp;
- return SYNTH_FULL_SCALE_EG1_GAIN;
-}
-
-
-/*----------------------------------------------------------------------------
- * ConvertLFOPhaseIncrement()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * Inputs:
- *
- * Outputs:
- *
- * Side Effects:
- *----------------------------------------------------------------------------
-*/
-static EAS_I16 ConvertLFOPhaseIncrement (EAS_I32 pitchCents)
-{
-
- /* check range */
- if (pitchCents > MAX_LFO_FREQUENCY_IN_PITCHCENTS)
- pitchCents = MAX_LFO_FREQUENCY_IN_PITCHCENTS;
- if (pitchCents < MIN_LFO_FREQUENCY_IN_PITCHCENTS)
- pitchCents = MIN_LFO_FREQUENCY_IN_PITCHCENTS;
-
- /* double the rate and divide by frame rate by subtracting in log domain */
- pitchCents = pitchCents - dlsLFOFrequencyConvert;
-
- /* convert to phase increment */
- return (EAS_I16) EAS_Calculate2toX(pitchCents);
-}
-
-/*----------------------------------------------------------------------------
- * ConvertPan()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- * Inputs:
- *
- * Outputs:
- *
- * Side Effects:
- *----------------------------------------------------------------------------
-*/
-static EAS_I8 ConvertPan (EAS_I32 pan)
-{
-
- /* multiply by conversion factor */
- pan = FMUL_15x15 (PAN_CONVERSION_FACTOR, pan);
- if (pan < MIN_PAN_VALUE)
- return MIN_PAN_VALUE;
- if (pan > MAX_PAN_VALUE)
- return MAX_PAN_VALUE;
- return (EAS_I8) pan;
-}
-
-/*----------------------------------------------------------------------------
- * ConvertQ()
- *----------------------------------------------------------------------------
- * Convert the DLS filter resonance to an index value used by the synth
- * that accesses tables of coefficients based on the Q.
- *----------------------------------------------------------------------------
-*/
-static EAS_U8 ConvertQ (EAS_I32 q)
-{
-
- /* apply limits */
- if (q <= 0)
- return 0;
-
- /* convert to table index */
- /*lint -e{704} use shift for performance */
- q = (FILTER_Q_CONVERSION_FACTOR * q + 0x4000) >> 15;
-
- /* apply upper limit */
- if (q >= FILTER_RESONANCE_NUM_ENTRIES)
- q = FILTER_RESONANCE_NUM_ENTRIES - 1;
- return (EAS_U8) q;
-}
-
-#ifdef _DEBUG_DLS
-/*----------------------------------------------------------------------------
- * DumpDLS()
- *----------------------------------------------------------------------------
-*/
-static void DumpDLS (S_EAS *pEAS)
-{
- S_DLS_ARTICULATION *pArt;
- S_DLS_REGION *pRegion;
- EAS_INT i;
- EAS_INT j;
-
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000022 , pEAS->numPrograms);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000023 , pEAS->numWTRegions);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000024 , pEAS->numDLSArticulations);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000025 , pEAS->numSamples);
-
- /* dump the instruments */
- for (i = 0; i < pEAS->numPrograms; i++)
- {
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000026 ,
- pEAS->pPrograms[i].locale >> 16,
- (pEAS->pPrograms[i].locale >> 8) & 0x7f,
- pEAS->pPrograms[i].locale & 0x7f);
-
- for (j = pEAS->pPrograms[i].regionIndex; ; j++)
- {
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000027 , j);
- pRegion = &pEAS->pWTRegions[j];
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000028 , pRegion->gain);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000029 , pRegion->region.rangeLow, pRegion->region.rangeHigh);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002a , pRegion->region.keyGroupAndFlags);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002b , pRegion->loopStart);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002c , pRegion->loopEnd);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002d , pRegion->tuning);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002e , pRegion->artIndex);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000002f , pRegion->waveIndex);
-
- if (pRegion->region.keyGroupAndFlags & REGION_FLAG_LAST_REGION)
- break;
- }
-
- }
-
- /* dump the articulation data */
- for (i = 0; i < pEAS->numDLSArticulations; i++)
- {
- /* articulation data */
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000030 , i);
- pArt = &pEAS->pDLSArticulations[i];
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000031 , pArt->m_nEG2toFilterDepth);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000032 , pArt->m_nEG2toPitchDepth);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000033 , pArt->m_nFilterCutoffFrequency);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000034 , pArt->m_nFilterResonance);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000035 , pArt->m_nLFOAmplitudeDepth);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000036 , pArt->m_nLFODelayTime);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000037 , pArt->m_nLFOFrequency);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000038 , pArt->m_nLFOPitchDepth);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000039 , pArt->m_nPan);
-
- /* EG1 data */
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003a , pArt->m_sEG1.m_nAttack);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003b , pArt->m_sEG1.m_nDecay);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003c , pArt->m_sEG1.m_nSustain);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003d , pArt->m_sEG1.m_nRelease);
-
- /* EG2 data */
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003e , pArt->m_sEG2.m_nAttack);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x0000003f , pArt->m_sEG2.m_nDecay);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000040 , pArt->m_sEG2.m_nSustain);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000041 , pArt->m_sEG2.m_nRelease);
-
- }
-
- /* dump the waves */
- for (i = 0; i < pEAS->numSamples; i++)
- {
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000042 , i);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000043 , pEAS->pSampleLen[i]);
- EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x19299ed4, 0x00000044 , pEAS->ppSamples[i]);
- }
-
-}
-#endif
-