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v811_spc009/external/sonivox/arm-wt-22k/lib_src/eas_mdls.c

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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 "log/log.h"
#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"
#include <string.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)
#ifndef EAS_U32_MAX
#define EAS_U32_MAX (4294967295U)
#endif
#ifndef EAS_I32_MAX
#define EAS_I32_MAX (2147483647)
#endif
/*------------------------------------
* 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, EAS_U32 sampleLen);
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;
uint32_t chunk_type;
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, &chunk_type, sizeof(chunk_type), &size)) != EAS_SUCCESS)
return result;
/* check for processor endian-ness */
dls.bigEndian = (chunk_type == 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 > (EAS_I32) (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); */ }
EAS_HWFree(dls.hwInstData, dls.wsmpData);
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); */ }
EAS_HWFree(dls.hwInstData, dls.wsmpData);
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); */ }
EAS_HWFree(dls.hwInstData, dls.wsmpData);
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) {
EAS_HWFree(dls.hwInstData, dls.wsmpData);
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); */ }
EAS_HWFree(dls.hwInstData, dls.wsmpData);
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 */
if (dls.pDLS) {
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;
if (*pSize < 0) {
ALOGE("b/37093318");
return EAS_ERROR_FILE_FORMAT;
}
/* 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 second pass, ensure waveCount matches with the value parsed in first pass */
if (pDLSData->pDLS)
{
if (pDLSData->waveCount != pDLSData->pDLS->numDLSSamples)
{
return EAS_ERROR_DATA_INCONSISTENCY;
}
}
#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 < 0 || 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 = (EAS_U8*)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_U32)size)) != 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;
/* ensure no overflow */
if (p->loopLength
&& ((p->loopStart > EAS_U32_MAX - p->loopLength)
|| (p->loopStart + p->loopLength > EAS_U32_MAX / sizeof(EAS_SAMPLE))))
{
return EAS_FAILURE;
}
}
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_U32 sampleLen)
{
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)
{
if (sampleLen < sizeof(EAS_SAMPLE)
|| (pWsmp->loopStart + pWsmp->loopLength) * sizeof(EAS_SAMPLE) > sampleLen - sizeof(EAS_SAMPLE))
{
return EAS_FAILURE;
}
pSample[pWsmp->loopStart + pWsmp->loopLength] = pSample[pWsmp->loopStart];
}
return EAS_SUCCESS;
}
#elif defined(_16_BIT_SAMPLES)
static EAS_RESULT Parse_data (SDLS_SYNTHESIZER_DATA *pDLSData, EAS_I32 pos, EAS_I32 size, S_WSMP_DATA *pWsmp, EAS_SAMPLE *pSample, EAS_U32 sampleLen)
{
EAS_RESULT result;
EAS_U8 convBuf[SAMPLE_CONVERT_CHUNK_SIZE];
EAS_I32 count = 0;
EAS_I32 i;
EAS_I16 *p;
/* seek to start of chunk */
if ((result = EAS_HWFileSeek(pDLSData->hwInstData, pDLSData->fileHandle, pos)) != EAS_SUCCESS)
return result;
p = pSample;
while (size)
{
/* 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;
if (pWsmp->bitsPerSample == 16)
{
memcpy(p, convBuf, count);
p += count >> 1;
}
else
{
for(i=0; i<count; i++)
{
*p++ = (short)((convBuf[i] ^ 0x80) << 8);
}
}
}
/* for looped samples, copy the last sample to the end */
if (pWsmp->loopLength)
{
if( (pDLSData->wavePoolOffset + pWsmp->loopLength) >= pDLSData->wavePoolSize )
{
return EAS_SUCCESS;
}
if (sampleLen < sizeof(EAS_SAMPLE)
|| (pWsmp->loopStart + pWsmp->loopLength) * sizeof(EAS_SAMPLE) > sampleLen - sizeof(EAS_SAMPLE)) {
return EAS_FAILURE;
}
pSample[(pWsmp->loopStart + pWsmp->loopLength)>>1] = pSample[(pWsmp->loopStart)>>1];
}
return EAS_SUCCESS;
}
#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 second pass, ensure instCount is less than numDLSPrograms */
if (pDLSData->pDLS)
{
if (pDLSData->instCount >= pDLSData->pDLS->numDLSPrograms)
{
return EAS_ERROR_DATA_INCONSISTENCY;
}
}
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 second pass, ensure regionCount is less than numDLSRegions */
if (pDLSData->pDLS)
{
if (pDLSData->regionCount >= pDLSData->pDLS->numDLSRegions)
{
return EAS_ERROR_DATA_INCONSISTENCY;
}
}
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;
if (waveIndex >= pDLSData->waveCount)
{
return EAS_FAILURE;
}
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)
{
/* ensure artCount is less than numDLSArticulations */
if (pDLSData->artCount >= pDLSData->pDLS->numDLSArticulations)
{
return EAS_ERROR_DATA_INCONSISTENCY;
}
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);
/* ensure loopStart and loopEnd fall in the range */
if (pWsmp->loopLength != 0)
{
EAS_U32 sampleLen = pDLSData->pDLS->pDLSSampleLen[waveIndex];
if (sampleLen < sizeof(EAS_SAMPLE)
|| (pWsmp->loopStart + pWsmp->loopLength) * sizeof(EAS_SAMPLE) > sampleLen - sizeof(EAS_SAMPLE))
{
return EAS_FAILURE;
}
}
}
/* 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)
{
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 - 1)) {
ALOGE("b/34031018, stackPtr(%d)", *pStackPtr);
android_errorWriteLog(0x534e4554, "34031018");
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
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