blob: 9f4d5410a7d9f68dd01ff92abe3c61fdae6552e8 [file] [log] [blame]
/*----------------------------------------------------------------------------
*
* File:
* eas_imelody.c
*
* Contents and purpose:
* iMelody parser
*
* Copyright Sonic Network Inc. 2005
* 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: 797 $
* $Date: 2007-08-01 00:15:56 -0700 (Wed, 01 Aug 2007) $
*----------------------------------------------------------------------------
*/
/* lint doesn't like the way some string.h files look */
#ifdef _lint
#include "lint_stdlib.h"
#else
#include <string.h>
#endif
#include "eas_data.h"
#include "eas_miditypes.h"
#include "eas_parser.h"
#include "eas_report.h"
#include "eas_host.h"
#include "eas_midi.h"
#include "eas_config.h"
#include "eas_vm_protos.h"
#include "eas_imelodydata.h"
#include "eas_ctype.h"
// #define _DEBUG_IMELODY
/* increase gain for mono ringtones */
#define IMELODY_GAIN_OFFSET 8
/* length of 32nd note in 1/256ths of a msec for 120 BPM tempo */
#define DEFAULT_TICK_CONV 16000
#define TICK_CONVERT 1920000
/* default channel and program for iMelody playback */
#define IMELODY_CHANNEL 0
#define IMELODY_PROGRAM 80
#define IMELODY_VEL_MUL 4
#define IMELODY_VEL_OFS 67
/* multiplier for fixed point triplet conversion */
#define TRIPLET_MULTIPLIER 683
#define TRIPLET_SHIFT 10
static const char* const tokens[] =
{
"BEGIN:IMELODY",
"VERSION:",
"FORMAT:CLASS",
"NAME:",
"COMPOSER:",
"BEAT:",
"STYLE:",
"VOLUME:",
"MELODY:",
"END:IMELODY"
};
/* ledon or ledoff */
static const char ledStr[] = "edo";
/* vibeon or vibeoff */
static const char vibeStr[] = "ibeo";
/* backon or backoff */
static const char backStr[] = "cko";
typedef enum
{
TOKEN_BEGIN,
TOKEN_VERSION,
TOKEN_FORMAT,
TOKEN_NAME,
TOKEN_COMPOSER,
TOKEN_BEAT,
TOKEN_STYLE,
TOKEN_VOLUME,
TOKEN_MELODY,
TOKEN_END,
TOKEN_INVALID
} ENUM_IMELODY_TOKENS;
/* lookup table for note values */
static const EAS_I8 noteTable[] = { 9, 11, 0, 2, 4, 5, 7 };
/* inline functions */
#ifdef _DEBUG_IMELODY
static void PutBackChar (S_IMELODY_DATA *pData)
{
if (pData->index)
pData->index--;
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "PutBackChar '%c'\n", pData->buffer[pData->index]); */ }
}
#else
EAS_INLINE void PutBackChar (S_IMELODY_DATA *pData) { if (pData->index) pData->index--; }
#endif
/* local prototypes */
static EAS_RESULT IMY_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset);
static EAS_RESULT IMY_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
static EAS_RESULT IMY_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime);
static EAS_RESULT IMY_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode);
static EAS_RESULT IMY_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_STATE *pState);
static EAS_RESULT IMY_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
static EAS_RESULT IMY_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
static EAS_RESULT IMY_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
static EAS_RESULT IMY_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
static EAS_RESULT IMY_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value);
static EAS_RESULT IMY_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue);
static EAS_BOOL IMY_PlayNote (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData, EAS_I8 note, EAS_INT parserMode);
static EAS_BOOL IMY_PlayRest (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData);
static EAS_BOOL IMY_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_I32 *pDuration);
static EAS_BOOL IMY_GetLEDState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData);
static EAS_BOOL IMY_GetVibeState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData);
static EAS_BOOL IMY_GetBackState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData);
static EAS_BOOL IMY_GetVolume (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_BOOL inHeader);
static EAS_BOOL IMY_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_INT *temp, EAS_BOOL inHeader);
static EAS_RESULT IMY_ParseHeader (S_EAS_DATA *pEASData, S_IMELODY_DATA* pData);
static EAS_I8 IMY_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_BOOL inHeader);
static EAS_RESULT IMY_ReadLine (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE fileHandle, EAS_I8 *buffer, EAS_I32 *pStartLine);
static EAS_INT IMY_ParseLine (EAS_I8 *buffer, EAS_U8 *pIndex);
/*----------------------------------------------------------------------------
*
* EAS_iMelody_Parser
*
* This structure contains the functional interface for the iMelody parser
*----------------------------------------------------------------------------
*/
const S_FILE_PARSER_INTERFACE EAS_iMelody_Parser =
{
IMY_CheckFileType,
IMY_Prepare,
IMY_Time,
IMY_Event,
IMY_State,
IMY_Close,
IMY_Reset,
IMY_Pause,
IMY_Resume,
NULL,
IMY_SetData,
IMY_GetData,
NULL
};
/*----------------------------------------------------------------------------
* IMY_CheckFileType()
*----------------------------------------------------------------------------
* Purpose:
* Check the file type to see if we can parse it
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset)
{
S_IMELODY_DATA* pData;
EAS_I8 buffer[MAX_LINE_SIZE+1];
EAS_U8 index;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_CheckFileType\n"); */ }
#endif
/* read the first line of the file */
*ppHandle = NULL;
if (IMY_ReadLine(pEASData->hwInstData, fileHandle, buffer, NULL) != EAS_SUCCESS)
return EAS_SUCCESS;
/* check for header string */
if (IMY_ParseLine(buffer, &index) == TOKEN_BEGIN)
{
/* check for static memory allocation */
if (pEASData->staticMemoryModel)
pData = EAS_CMEnumData(EAS_CM_IMELODY_DATA);
else
pData = EAS_HWMalloc(pEASData->hwInstData, sizeof(S_IMELODY_DATA));
if (!pData)
return EAS_ERROR_MALLOC_FAILED;
EAS_HWMemSet(pData, 0, sizeof(S_IMELODY_DATA));
/* initialize */
pData->fileHandle = fileHandle;
pData->fileOffset = offset;
pData->state = EAS_STATE_ERROR;
pData->state = EAS_STATE_OPEN;
/* return a pointer to the instance data */
*ppHandle = pData;
}
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Prepare()
*----------------------------------------------------------------------------
* Purpose:
* Prepare to parse the file. Allocates instance data (or uses static allocation for
* static memory model).
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_IMELODY_DATA* pData;
EAS_RESULT result;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_Prepare\n"); */ }
#endif
/* check for valid state */
pData = (S_IMELODY_DATA*) pInstData;
if (pData->state != EAS_STATE_OPEN)
return EAS_ERROR_NOT_VALID_IN_THIS_STATE;
/* instantiate a synthesizer */
if ((result = VMInitMIDI(pEASData, &pData->pSynth)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "VMInitMIDI returned %d\n", result); */ }
return result;
}
/* parse the header */
if ((result = IMY_ParseHeader(pEASData, pData)) != EAS_SUCCESS)
return result;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Prepare: state set to EAS_STATE_READY\n"); */ }
#endif
pData ->state = EAS_STATE_READY;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Time()
*----------------------------------------------------------------------------
* Purpose:
* Returns the time of the next event in msecs
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
* pTime - pointer to variable to hold time of next event (in msecs)
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
/*lint -esym(715, pEASData) common decoder interface - pEASData not used */
static EAS_RESULT IMY_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime)
{
S_IMELODY_DATA *pData;
pData = (S_IMELODY_DATA*) pInstData;
/* return time in milliseconds */
/*lint -e{704} use shift instead of division */
*pTime = pData->time >> 8;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Event()
*----------------------------------------------------------------------------
* Purpose:
* Parse the next event in the file
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode)
{
S_IMELODY_DATA* pData;
EAS_RESULT result;
EAS_I8 c;
EAS_BOOL eof;
EAS_INT temp;
pData = (S_IMELODY_DATA*) pInstData;
if (pData->state >= EAS_STATE_OPEN)
return EAS_SUCCESS;
/* initialize MIDI channel when the track starts playing */
if (pData->time == 0)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Event: Reset\n"); */ }
#endif
/* set program to square lead */
VMProgramChange(pEASData->pVoiceMgr, pData->pSynth, IMELODY_CHANNEL, IMELODY_PROGRAM);
/* set channel volume to max */
VMControlChange(pEASData->pVoiceMgr, pData->pSynth, IMELODY_CHANNEL, 7, 127);
}
/* check for end of note */
if (pData->note)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Stopping note %d\n", pData->note); */ }
#endif
/* stop the note */
VMStopNote(pEASData->pVoiceMgr, pData->pSynth, IMELODY_CHANNEL, pData->note, 0);
pData->note = 0;
/* check for rest between notes */
if (pData->restTicks)
{
pData->time += pData->restTicks;
pData->restTicks = 0;
return EAS_SUCCESS;
}
}
/* parse the next event */
eof = EAS_FALSE;
while (!eof)
{
/* get next character */
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE);
switch (c)
{
/* start repeat */
case '(':
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter repeat section\n", c); */ }
#endif
if (pData->repeatOffset < 0)
{
pData->repeatOffset = pData->startLine + (EAS_I32) pData->index;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Repeat offset = %d\n", pData->repeatOffset); */ }
#endif
}
else
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Ignoring nested repeat section\n"); */ }
break;
/* end repeat */
case ')':
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "End repeat section, repeat offset = %d\n", pData->repeatOffset); */ }
#endif
/* ignore invalid repeats */
if (pData->repeatCount >= 0)
{
/* decrement repeat count (repeatCount == 0 means infinite loop) */
if (pData->repeatCount > 0)
{
if (--pData->repeatCount == 0)
{
pData->repeatCount = -1;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Repeat loop complete\n"); */ }
#endif
}
}
//2 TEMPORARY FIX: If locating, don't do infinite loops.
//3 We need a different mode for metadata parsing where we don't loop at all
if ((parserMode == eParserModePlay) || (pData->repeatCount != 0))
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Rewinding file for repeat\n"); */ }
#endif
/* rewind to start of loop */
if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->repeatOffset)) != EAS_SUCCESS)
return result;
IMY_ReadLine(pEASData->hwInstData, pData->fileHandle, pData->buffer, &pData->startLine);
pData->index = 0;
/* if last loop, prevent future loops */
if (pData->repeatCount == -1)
pData->repeatOffset = -1;
}
}
break;
/* repeat count */
case '@':
if (!IMY_GetNumber(pEASData->hwInstData, pData, &temp, EAS_FALSE))
eof = EAS_TRUE;
else if (pData->repeatOffset > 0)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Repeat count = %dt", pData->repeatCount); */ }
#endif
if (pData->repeatCount < 0)
pData->repeatCount = (EAS_I16) temp;
}
break;
/* volume */
case 'V':
if (!IMY_GetVolume(pEASData->hwInstData, pData, EAS_FALSE))
eof = EAS_TRUE;
break;
/* flat */
case '&':
pData->noteModifier = -1;
break;
/* sharp */
case '#':
pData->noteModifier = +1;
break;
/* octave */
case '*':
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE);
if (IsDigit(c))
pData->octave = (EAS_U8) ((c - '0' + 1) * 12);
else if (!c)
eof = EAS_TRUE;
break;
/* ledon or ledoff */
case 'l':
if (!IMY_GetLEDState(pEASData, pData))
eof = EAS_TRUE;
break;
/* vibeon or vibeoff */
case 'v':
if (!IMY_GetVibeState(pEASData, pData))
eof = EAS_TRUE;
break;
/* either a B note or backon or backoff */
case 'b':
if (IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE) == 'a')
{
if (!IMY_GetBackState(pEASData, pData))
eof = EAS_TRUE;
}
else
{
PutBackChar(pData);
if (IMY_PlayNote(pEASData, pData, c, parserMode))
return EAS_SUCCESS;
eof = EAS_TRUE;
}
break;
/* rest */
case 'r':
case 'R':
if (IMY_PlayRest(pEASData, pData))
return EAS_SUCCESS;
eof = EAS_TRUE;
break;
/* EOF */
case 0:
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Event: end of iMelody file detected\n"); */ }
#endif
eof = EAS_TRUE;
break;
/* must be a note */
default:
c = ToLower(c);
if ((c >= 'a') && (c <= 'g'))
{
if (IMY_PlayNote(pEASData, pData, c, parserMode))
return EAS_SUCCESS;
eof = EAS_TRUE;
}
else
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Ignoring unexpected character '%c' [0x%02x]\n", c, c); */ }
break;
}
}
/* handle EOF */
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Event: state set to EAS_STATE_STOPPING\n"); */ }
#endif
pData->state = EAS_STATE_STOPPING;
VMReleaseAllVoices(pEASData->pVoiceMgr, pData->pSynth);
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_State()
*----------------------------------------------------------------------------
* Purpose:
* Returns the current state of the stream
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
* pState - pointer to variable to store state
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
/*lint -esym(715, pEASData) common decoder interface - pEASData not used */
static EAS_RESULT IMY_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 *pState)
{
S_IMELODY_DATA* pData;
/* establish pointer to instance data */
pData = (S_IMELODY_DATA*) pInstData;
/* if stopping, check to see if synth voices are active */
if (pData->state == EAS_STATE_STOPPING)
{
if (VMActiveVoices(pData->pSynth) == 0)
{
pData->state = EAS_STATE_STOPPED;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_State: state set to EAS_STATE_STOPPED\n"); */ }
#endif
}
}
if (pData->state == EAS_STATE_PAUSING)
{
if (VMActiveVoices(pData->pSynth) == 0)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_State: state set to EAS_STATE_PAUSED\n"); */ }
#endif
pData->state = EAS_STATE_PAUSED;
}
}
/* return current state */
*pState = pData->state;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Close()
*----------------------------------------------------------------------------
* Purpose:
* Close the file and clean up
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_IMELODY_DATA* pData;
EAS_RESULT result;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Close: close file\n"); */ }
#endif
pData = (S_IMELODY_DATA*) pInstData;
/* close the file */
if ((result = EAS_HWCloseFile(pEASData->hwInstData, pData->fileHandle)) != EAS_SUCCESS)
return result;
/* free the synth */
if (pData->pSynth != NULL)
VMMIDIShutdown(pEASData, pData->pSynth);
/* if using dynamic memory, free it */
if (!pEASData->staticMemoryModel)
EAS_HWFree(pEASData->hwInstData, pData);
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Reset()
*----------------------------------------------------------------------------
* Purpose:
* Reset the sequencer. Used for locating backwards in the file.
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_IMELODY_DATA* pData;
EAS_RESULT result;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Reset: reset file\n"); */ }
#endif
pData = (S_IMELODY_DATA*) pInstData;
/* reset the synth */
VMReset(pEASData->pVoiceMgr, pData->pSynth, EAS_TRUE);
/* reset time to zero */
pData->time = 0;
pData->note = 0;
/* reset file position and re-parse header */
pData->state = EAS_STATE_ERROR;
if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->fileOffset)) != EAS_SUCCESS)
return result;
if ((result = IMY_ParseHeader (pEASData, pData)) != EAS_SUCCESS)
return result;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Reset: state set to EAS_STATE_ERROR\n"); */ }
#endif
pData->state = EAS_STATE_READY;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Pause()
*----------------------------------------------------------------------------
* Purpose:
* Pauses the sequencer. Mutes all voices and sets state to pause.
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_IMELODY_DATA *pData;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Pause: pause file\n"); */ }
#endif
/* can't pause a stopped stream */
pData = (S_IMELODY_DATA*) pInstData;
if (pData->state == EAS_STATE_STOPPED)
return EAS_ERROR_ALREADY_STOPPED;
/* mute the synthesizer */
VMMuteAllVoices(pEASData->pVoiceMgr, pData->pSynth);
pData->state = EAS_STATE_PAUSING;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_Resume()
*----------------------------------------------------------------------------
* Purpose:
* Resume playing after a pause, sets state back to playing.
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
/*lint -esym(715, pEASData) common decoder interface - pEASData not used */
static EAS_RESULT IMY_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_IMELODY_DATA *pData;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_Resume: resume file\n"); */ }
#endif
/* can't resume a stopped stream */
pData = (S_IMELODY_DATA*) pInstData;
if (pData->state == EAS_STATE_STOPPED)
return EAS_ERROR_ALREADY_STOPPED;
/* nothing to do but resume playback */
pData->state = EAS_STATE_PLAY;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_SetData()
*----------------------------------------------------------------------------
* Purpose:
* Adjust tempo relative to song tempo
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* pInstData - pointer to iMelody instance data
* rate - rate (28-bit fractional amount)
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
/*lint -esym(715, pEASData) common decoder interface - pEASData not used */
static EAS_RESULT IMY_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value)
{
S_IMELODY_DATA *pData;
pData = (S_IMELODY_DATA*) pInstData;
switch (param)
{
/* set metadata callback */
case PARSER_DATA_METADATA_CB:
EAS_HWMemCpy(&pData->metadata, (void*) value, sizeof(S_METADATA_CB));
break;
default:
return EAS_ERROR_INVALID_PARAMETER;
}
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_GetData()
*----------------------------------------------------------------------------
* Purpose:
* Return the file type
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* pInstData - pointer to iMelody instance data
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
/*lint -esym(715, pEASData) common decoder interface - pEASData not used */
static EAS_RESULT IMY_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue)
{
S_IMELODY_DATA *pData;
pData = (S_IMELODY_DATA*) pInstData;
switch (param)
{
/* return file type as iMelody */
case PARSER_DATA_FILE_TYPE:
*pValue = EAS_FILE_IMELODY;
break;
case PARSER_DATA_SYNTH_HANDLE:
*pValue = (EAS_I32) pData->pSynth;
break;
case PARSER_DATA_GAIN_OFFSET:
*pValue = IMELODY_GAIN_OFFSET;
break;
default:
return EAS_ERROR_INVALID_PARAMETER;
}
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_PlayNote()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_PlayNote (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData, EAS_I8 note, EAS_INT parserMode)
{
EAS_I32 duration;
EAS_U8 velocity;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_PlayNote: start note %d\n", note); */ }
#endif
/* get the duration */
if (!IMY_GetDuration(pEASData->hwInstData, pData, &duration))
return EAS_FALSE;
/* save note value */
pData->note = (EAS_U8) (pData->octave + noteTable[note - 'a'] + pData->noteModifier);
velocity = (EAS_U8) (pData->volume ? pData->volume * IMELODY_VEL_MUL + IMELODY_VEL_OFS : 0);
/* start note only if in play mode */
if (parserMode == eParserModePlay)
VMStartNote(pEASData->pVoiceMgr, pData->pSynth, IMELODY_CHANNEL, pData->note, velocity);
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_PlayNote: Start note %d, duration %d\n", pData->note, duration); */ }
#endif
/* determine note length */
switch (pData->style)
{
case 0:
/*lint -e{704} shift for performance */
pData->restTicks = duration >> 4;
break;
case 1:
pData->restTicks = 0;
break;
case 2:
/*lint -e{704} shift for performance */
pData->restTicks = duration >> 1;
break;
default:
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "IMY_PlayNote: Note style out of range: %d\n", pData->style); */ }
/*lint -e{704} shift for performance */
pData->restTicks = duration >> 4;
break;
}
/* next event is at end of this note */
pData->time += duration - pData->restTicks;
/* reset the flat/sharp modifier */
pData->noteModifier = 0;
return EAS_TRUE;
}
/*----------------------------------------------------------------------------
* IMY_PlayRest()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_PlayRest (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData)
{
EAS_I32 duration;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_PlayRest]n"); */ }
#endif
/* get the duration */
if (!IMY_GetDuration(pEASData->hwInstData, pData, &duration))
return EAS_FALSE;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_PlayRest: note duration %d\n", duration); */ }
#endif
/* next event is at end of this note */
pData->time += duration;
return EAS_TRUE;
}
/*----------------------------------------------------------------------------
* IMY_GetDuration()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_I32 *pDuration)
{
EAS_I32 duration;
EAS_I8 c;
/* get the duration */
*pDuration = 0;
c = IMY_GetNextChar(hwInstData, pData, EAS_FALSE);
if (!c)
return EAS_FALSE;
if ((c < '0') || (c > '5'))
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetDuration: error in duration '%c'\n", c); */ }
#endif
return EAS_FALSE;
}
/* calculate total length of note */
duration = pData->tick * (1 << ('5' - c));
/* check for duration modifier */
c = IMY_GetNextChar(hwInstData, pData, EAS_FALSE);
if (c)
{
if (c == '.')
/*lint -e{704} shift for performance */
duration += duration >> 1;
else if (c == ':')
/*lint -e{704} shift for performance */
duration += (duration >> 1) + (duration >> 2);
else if (c == ';')
/*lint -e{704} shift for performance */
duration = (duration * TRIPLET_MULTIPLIER) >> TRIPLET_SHIFT;
else
PutBackChar(pData);
}
*pDuration = duration;
return EAS_TRUE;
}
/*----------------------------------------------------------------------------
* IMY_GetLEDState()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetLEDState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData)
{
EAS_I8 c;
EAS_INT i;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_GetLEDState\n"); */ }
#endif
for (i = 0; i < 5; i++)
{
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE);
if (!c)
return EAS_FALSE;
switch (i)
{
case 3:
if (c == 'n')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetLEDState: LED on\n"); */ }
#endif
EAS_HWLED(pEASData->hwInstData, EAS_TRUE);
return EAS_TRUE;
}
else if (c != 'f')
return EAS_FALSE;
break;
case 4:
if (c == 'f')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetLEDState: LED off\n"); */ }
#endif
EAS_HWLED(pEASData->hwInstData, EAS_FALSE);
return EAS_TRUE;
}
return EAS_FALSE;
default:
if (c != ledStr[i])
return EAS_FALSE;
break;
}
}
return EAS_FALSE;
}
/*----------------------------------------------------------------------------
* IMY_GetVibeState()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetVibeState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData)
{
EAS_I8 c;
EAS_INT i;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_GetVibeState\n"); */ }
#endif
for (i = 0; i < 6; i++)
{
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE);
if (!c)
return EAS_FALSE;
switch (i)
{
case 4:
if (c == 'n')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetVibeState: vibrate on\n"); */ }
#endif
EAS_HWVibrate(pEASData->hwInstData, EAS_TRUE);
return EAS_TRUE;
}
else if (c != 'f')
return EAS_FALSE;
break;
case 5:
if (c == 'f')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetVibeState: vibrate off\n"); */ }
#endif
EAS_HWVibrate(pEASData->hwInstData, EAS_FALSE);
return EAS_TRUE;
}
return EAS_FALSE;
default:
if (c != vibeStr[i])
return EAS_FALSE;
break;
}
}
return EAS_FALSE;
}
/*----------------------------------------------------------------------------
* IMY_GetBackState()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetBackState (S_EAS_DATA *pEASData, S_IMELODY_DATA *pData)
{
EAS_I8 c;
EAS_INT i;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_GetBackState\n"); */ }
#endif
for (i = 0; i < 5; i++)
{
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_FALSE);
if (!c)
return EAS_FALSE;
switch (i)
{
case 3:
if (c == 'n')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetBackState: backlight on\n"); */ }
#endif
EAS_HWBackLight(pEASData->hwInstData, EAS_TRUE);
return EAS_TRUE;
}
else if (c != 'f')
return EAS_FALSE;
break;
case 4:
if (c == 'f')
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetBackState: backlight off\n"); */ }
#endif
EAS_HWBackLight(pEASData->hwInstData, EAS_FALSE);
return EAS_TRUE;
}
return EAS_FALSE;
default:
if (c != backStr[i])
return EAS_FALSE;
break;
}
}
return EAS_FALSE;
}
/*----------------------------------------------------------------------------
* IMY_GetVolume()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetVolume (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_BOOL inHeader)
{
EAS_INT temp;
EAS_I8 c;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_GetVolume\n"); */ }
#endif
c = IMY_GetNextChar(hwInstData, pData, inHeader);
if (c == '+')
{
if (pData->volume < 15)
pData->volume++;
return EAS_TRUE;
}
else if (c == '-')
{
if (pData->volume > 0)
pData->volume--;
return EAS_TRUE;
}
else if (IsDigit(c))
temp = c - '0';
else
return EAS_FALSE;
c = IMY_GetNextChar(hwInstData, pData, inHeader);
if (IsDigit(c))
temp = temp * 10 + c - '0';
else if (c)
PutBackChar(pData);
if ((temp >= 0) && (temp <= 15))
{
if (inHeader && (temp == 0))
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Ignoring V0 encountered in header\n"); */ }
else
pData->volume = (EAS_U8) temp;
}
return EAS_TRUE;
}
/*----------------------------------------------------------------------------
* IMY_GetNumber()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_INT *temp, EAS_BOOL inHeader)
{
EAS_BOOL ok;
EAS_I8 c;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_GetNumber\n"); */ }
#endif
*temp = 0;
ok = EAS_FALSE;
for (;;)
{
c = IMY_GetNextChar(hwInstData, pData, inHeader);
if (IsDigit(c))
{
*temp = *temp * 10 + c - '0';
ok = EAS_TRUE;
}
else
{
if (c)
PutBackChar(pData);
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetNumber: value %d\n", *temp); */ }
#endif
return ok;
}
}
}
/*----------------------------------------------------------------------------
* IMY_GetVersion()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_BOOL IMY_GetVersion (S_IMELODY_DATA *pData, EAS_INT *pVersion)
{
EAS_I8 c;
EAS_INT temp;
EAS_INT version;
version = temp = 0;
for (;;)
{
c = pData->buffer[pData->index++];
if ((c == 0) || (c == '.'))
{
/*lint -e{701} use shift for performance */
version = (version << 8) + temp;
if (c == 0)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetVersion: version 0x%04x\n", version); */ }
#endif
*pVersion = version;
return EAS_TRUE;
}
temp = 0;
}
else if (IsDigit(c))
temp = (temp * 10) + c - '0';
}
}
/*----------------------------------------------------------------------------
* IMY_MetaData()
*----------------------------------------------------------------------------
* Purpose:
* Prepare to parse the file. Allocates instance data (or uses static allocation for
* static memory model).
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static void IMY_MetaData (S_IMELODY_DATA *pData, E_EAS_METADATA_TYPE metaType, EAS_I8 *buffer)
{
EAS_I32 len;
/* check for callback */
if (!pData->metadata.callback)
return;
/* copy data to host buffer */
len = (EAS_I32) strlen((char*) buffer);
if (len >pData->metadata.bufferSize)
len = pData->metadata.bufferSize;
strncpy((char*) pData->metadata.buffer, (char*) buffer, (size_t) len);
pData->metadata.buffer[len] = 0;
/* callback to host */
pData->metadata.callback(metaType, pData->metadata.buffer, pData->metadata.pUserData);
}
/*----------------------------------------------------------------------------
* IMY_ParseHeader()
*----------------------------------------------------------------------------
* Purpose:
* Prepare to parse the file. Allocates instance data (or uses static allocation for
* static memory model).
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_ParseHeader (S_EAS_DATA *pEASData, S_IMELODY_DATA* pData)
{
EAS_RESULT result;
EAS_INT token;
EAS_INT temp;
EAS_I8 c;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Enter IMY_ParseHeader\n"); */ }
#endif
/* initialize some defaults */
pData->time = 0;
pData->tick = DEFAULT_TICK_CONV;
pData->note = 0;
pData->noteModifier = 0;
pData ->restTicks = 0;
pData->volume = 7;
pData->octave = 60;
pData->repeatOffset = -1;
pData->repeatCount = -1;
pData->style = 0;
/* force the read of the first line */
pData->index = 1;
/* read data until we get to melody */
for (;;)
{
/* read a line from the file and parse the token */
if (pData->index != 0)
{
if ((result = IMY_ReadLine(pEASData->hwInstData, pData->fileHandle, pData->buffer, &pData->startLine)) != EAS_SUCCESS)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_ParseHeader: IMY_ReadLine returned %d\n", result); */ }
#endif
return result;
}
}
token = IMY_ParseLine(pData->buffer, &pData->index);
switch (token)
{
/* ignore these valid tokens */
case TOKEN_BEGIN:
break;
case TOKEN_FORMAT:
if (!IMY_GetVersion(pData, &temp))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Invalid FORMAT field '%s'\n", pData->buffer); */ }
return EAS_ERROR_FILE_FORMAT;
}
if ((temp != 0x0100) && (temp != 0x0200))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Unsupported FORMAT %02x\n", temp); */ }
return EAS_ERROR_UNRECOGNIZED_FORMAT;
}
break;
case TOKEN_VERSION:
if (!IMY_GetVersion(pData, &temp))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Invalid VERSION field '%s'\n", pData->buffer); */ }
return EAS_ERROR_FILE_FORMAT;
}
if ((temp != 0x0100) && (temp != 0x0102))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Unsupported VERSION %02x\n", temp); */ }
return EAS_ERROR_UNRECOGNIZED_FORMAT;
}
break;
case TOKEN_NAME:
IMY_MetaData(pData, EAS_METADATA_TITLE, pData->buffer + pData->index);
break;
case TOKEN_COMPOSER:
IMY_MetaData(pData, EAS_METADATA_AUTHOR, pData->buffer + pData->index);
break;
/* handle beat */
case TOKEN_BEAT:
IMY_GetNumber(pEASData->hwInstData, pData, &temp, EAS_TRUE);
if ((temp >= 25) && (temp <= 900))
pData->tick = TICK_CONVERT / temp;
break;
/* handle style */
case TOKEN_STYLE:
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_TRUE);
if (c == 'S')
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_TRUE);
if ((c >= '0') && (c <= '2'))
pData->style = (EAS_U8) (c - '0');
else
{
PutBackChar(pData);
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Error in style command: %s\n", pData->buffer); */ }
}
break;
/* handle volume */
case TOKEN_VOLUME:
c = IMY_GetNextChar(pEASData->hwInstData, pData, EAS_TRUE);
if (c != 'V')
{
PutBackChar(pData);
if (!IsDigit(c))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Error in volume command: %s\n", pData->buffer); */ }
break;
}
}
IMY_GetVolume(pEASData->hwInstData, pData, EAS_TRUE);
break;
case TOKEN_MELODY:
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Header successfully parsed\n"); */ }
#endif
return EAS_SUCCESS;
case TOKEN_END:
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Unexpected END:IMELODY encountered\n"); */ }
return EAS_ERROR_FILE_FORMAT;
default:
/* force a read of the next line */
pData->index = 1;
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "Ignoring unrecognized token in iMelody file: %s\n", pData->buffer); */ }
break;
}
}
}
/*----------------------------------------------------------------------------
* IMY_GetNextChar()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_I8 IMY_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_IMELODY_DATA *pData, EAS_BOOL inHeader)
{
EAS_I8 c;
EAS_U8 index;
for (;;)
{
/* get next character */
c = pData->buffer[pData->index++];
/* buffer empty, read more */
if (!c)
{
/* don't read the next line in the header */
if (inHeader)
return 0;
pData->index = 0;
pData->buffer[0] = 0;
if (IMY_ReadLine(hwInstData, pData->fileHandle, pData->buffer, &pData->startLine) != EAS_SUCCESS)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetNextChar: EOF\n"); */ }
#endif
return 0;
}
/* check for END:IMELODY token */
if (IMY_ParseLine(pData->buffer, &index) == TOKEN_END)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetNextChar: found END:IMELODY\n"); */ }
#endif
pData->buffer[0] = 0;
return 0;
}
continue;
}
/* ignore white space */
if (!IsSpace(c))
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_GetNextChar returned '%c'\n", c); */ }
#endif
return c;
}
}
}
/*----------------------------------------------------------------------------
* IMY_ReadLine()
*----------------------------------------------------------------------------
* Purpose:
* Reads a line of input from the file, discarding the CR/LF
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT IMY_ReadLine (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE fileHandle, EAS_I8 *buffer, EAS_I32 *pStartLine)
{
EAS_RESULT result;
EAS_INT i;
EAS_I8 c;
/* fetch current file position and save it */
if (pStartLine != NULL)
{
if ((result = EAS_HWFilePos(hwInstData, fileHandle, pStartLine)) != EAS_SUCCESS)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_ParseHeader: EAS_HWFilePos returned %d\n", result); */ }
#endif
return result;
}
}
buffer[0] = 0;
for (i = 0; i < MAX_LINE_SIZE; )
{
if ((result = EAS_HWGetByte(hwInstData, fileHandle, &c)) != EAS_SUCCESS)
{
if ((result == EAS_EOF) && (i > 0))
break;
return result;
}
/* return on LF or end of data */
if (c == '\n')
break;
/* store characters in buffer */
if (c != '\r')
buffer[i++] = c;
}
buffer[i] = 0;
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_ReadLine read %s\n", buffer); */ }
#endif
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
* IMY_ParseLine()
*----------------------------------------------------------------------------
* Purpose:
*
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_INT IMY_ParseLine (EAS_I8 *buffer, EAS_U8 *pIndex)
{
EAS_INT i;
EAS_INT j;
/* there's no strnicmp() in stdlib, so we have to roll our own */
for (i = 0; i < TOKEN_INVALID; i++)
{
for (j = 0; ; j++)
{
/* end of token, must be a match */
if (tokens[i][j] == 0)
{
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_ParseLine found token %d\n", i); */ }
#endif
*pIndex = (EAS_U8) j;
return i;
}
if (tokens[i][j] != ToUpper(buffer[j]))
break;
}
}
#ifdef _DEBUG_IMELODY
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "IMY_ParseLine: no token found\n"); */ }
#endif
return TOKEN_INVALID;
}