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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-04 03:30:38 (GMT)
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-04 03:30:38 (GMT)
commit7df30109963092559d3760c0661a020f9daf1030 (patch)
tree5780537d7996618fb7e1754bbd27361f3ccb9286 /arm-wt-22k/lib_src/eas_mdls.c
parent1b52a76815aa068a3477bfdfaf58718d41d7f9b4 (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
+