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-rw-r--r--arm-fm-22k/lib_src/eas_rtttl.c2370
1 files changed, 1185 insertions, 1185 deletions
diff --git a/arm-fm-22k/lib_src/eas_rtttl.c b/arm-fm-22k/lib_src/eas_rtttl.c
index 486ad60..d8253fb 100644
--- a/arm-fm-22k/lib_src/eas_rtttl.c
+++ b/arm-fm-22k/lib_src/eas_rtttl.c
@@ -1,12 +1,12 @@
-/*----------------------------------------------------------------------------
- *
- * File:
- * eas_rtttl.c
- *
- * Contents and purpose:
- * RTTTL parser
- *
- * Copyright Sonic Network Inc. 2005
+/*----------------------------------------------------------------------------
+ *
+ * File:
+ * eas_rtttl.c
+ *
+ * Contents and purpose:
+ * RTTTL 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.
@@ -19,1179 +19,1179 @@
* 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: 795 $
- * $Date: 2007-08-01 00:14:45 -0700 (Wed, 01 Aug 2007) $
- *----------------------------------------------------------------------------
-*/
-
-#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_rtttldata.h"
-#include "eas_ctype.h"
-
-/* increase gain for mono ringtones */
-#define RTTTL_GAIN_OFFSET 8
-
-/* maximum title length including colon separator */
-#define RTTTL_MAX_TITLE_LEN 32
-#define RTTTL_INFINITE_LOOP 15
-
-/* length of 32nd note in 1/256ths of a msec for 63 BPM tempo */
-#define DEFAULT_TICK_CONV 30476
-#define TICK_CONVERT 1920000
-
-/* default channel and program for RTTTL playback */
-#define RTTTL_CHANNEL 0
-#define RTTTL_PROGRAM 80
-#define RTTTL_VELOCITY 127
-
-/* note used for rest */
-#define RTTTL_REST 1
-
-/* multiplier for fixed point triplet conversion */
-#define TRIPLET_MULTIPLIER 683
-#define TRIPLET_SHIFT 10
-
-/* local prototypes */
-static EAS_RESULT RTTTL_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset);
-static EAS_RESULT RTTTL_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT RTTTL_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime);
-static EAS_RESULT RTTTL_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode);
-static EAS_RESULT RTTTL_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_STATE *pState);
-static EAS_RESULT RTTTL_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT RTTTL_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT RTTTL_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT RTTTL_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT RTTTL_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value);
-static EAS_RESULT RTTTL_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue);
-static EAS_RESULT RTTTL_GetStyle (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData);
-static EAS_RESULT RTTTL_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pDuration);
-static EAS_RESULT RTTTL_GetOctave (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_U8 *pOctave);
-static EAS_RESULT RTTTL_GetTempo (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData);
-static EAS_RESULT RTTTL_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I32 *pValue);
-static EAS_RESULT RTTTL_ParseHeader (S_EAS_DATA *pEASData, S_RTTTL_DATA* pData, EAS_BOOL metaData);
-static EAS_RESULT RTTTL_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue);
-static EAS_RESULT RTTTL_PeekNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue);
-
-/* inline functions */
-EAS_INLINE void RTTTL_PutBackChar (S_RTTTL_DATA *pData, EAS_I8 value) { pData->dataByte = value; }
-
-
-/* lookup table for note values */
-static const EAS_U8 noteTable[] = { 21, 23, 12, 14, 16, 17, 19, 23 };
-
-/*----------------------------------------------------------------------------
- *
- * EAS_RTTTL_Parser
- *
- * This structure contains the functional interface for the iMelody parser
- *----------------------------------------------------------------------------
-*/
-const S_FILE_PARSER_INTERFACE EAS_RTTTL_Parser =
-{
- RTTTL_CheckFileType,
- RTTTL_Prepare,
- RTTTL_Time,
- RTTTL_Event,
- RTTTL_State,
- RTTTL_Close,
- RTTTL_Reset,
- RTTTL_Pause,
- RTTTL_Resume,
- NULL,
- RTTTL_SetData,
- RTTTL_GetData,
- NULL
-};
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset)
-{
- S_RTTTL_DATA data;
- S_RTTTL_DATA *pData;
-
- /* see if we can parse the header */
- data.fileHandle = fileHandle;
- data.fileOffset = offset;
- *ppHandle= NULL;
- if (RTTTL_ParseHeader (pEASData, &data, EAS_FALSE) == EAS_SUCCESS)
- {
-
- /* check for static memory allocation */
- if (pEASData->staticMemoryModel)
- pData = EAS_CMEnumData(EAS_CM_RTTTL_DATA);
- else
- pData = EAS_HWMalloc(pEASData->hwInstData, sizeof(S_RTTTL_DATA));
- if (!pData)
- return EAS_ERROR_MALLOC_FAILED;
- EAS_HWMemSet(pData, 0, sizeof(S_RTTTL_DATA));
-
- /* return a pointer to the instance data */
- pData->fileHandle = fileHandle;
- pData->fileOffset = offset;
- pData->state = EAS_STATE_OPEN;
- *ppHandle = pData;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_RTTTL_DATA* pData;
- EAS_RESULT result;
-
- /* check for valid state */
- pData = (S_RTTTL_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;
- }
-
- pData->state = EAS_STATE_ERROR;
- if ((result = RTTTL_ParseHeader (pEASData, pData, (EAS_BOOL) (pData->metadata.callback != NULL))) != EAS_SUCCESS)
- {
- /* if using dynamic memory, free it */
- if (!pEASData->staticMemoryModel)
- EAS_HWFree(pEASData->hwInstData, pData);
- return result;
- }
-
- pData->state = EAS_STATE_READY;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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) reserved for future use */
-static EAS_RESULT RTTTL_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime)
-{
- S_RTTTL_DATA *pData;
-
- pData = (S_RTTTL_DATA*) pInstData;
-
- /* return time in milliseconds */
- /*lint -e{704} use shift instead of division */
- *pTime = pData->time >> 8;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode)
-{
- S_RTTTL_DATA* pData;
- EAS_RESULT result;
- EAS_I32 ticks;
- EAS_I32 temp;
- EAS_I8 c;
- EAS_U8 note;
- EAS_U8 octave;
-
- pData = (S_RTTTL_DATA*) pInstData;
- if (pData->state >= EAS_STATE_OPEN)
- return EAS_SUCCESS;
-
- /* initialize MIDI channel when the track starts playing */
- if (pData->time == 0)
- {
- /* set program to square lead */
- VMProgramChange(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, RTTTL_PROGRAM);
-
- /* set channel volume to max */
- VMControlChange(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, 7, 127);
- }
-
- /* check for end of note */
- if (pData->note)
- {
- /* stop the note */
- VMStopNote(pEASData->pVoiceMgr, pData->pSynth, RTTTL_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 */
- octave = pData->octave;
- note = 0;
- ticks = pData->duration * pData->tick;
- for (;;)
- {
-
- /* get next character */
- if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
- {
- if (result != EAS_EOF)
- return result;
-
- /* end of file, if no notes to process, check for looping */
- if (!note)
- {
- /* if no loop set state to stopping */
- if (pData->repeatCount == 0)
- {
- pData->state = EAS_STATE_STOPPING;
- VMReleaseAllVoices(pEASData->pVoiceMgr, pData->pSynth);
- return EAS_SUCCESS;
- }
-
- /* decrement loop count */
- if (pData->repeatCount != RTTTL_INFINITE_LOOP)
- pData->repeatCount--;
-
- /* if locating, ignore infinite loops */
- else if (parserMode != eParserModePlay)
- {
- pData->state = EAS_STATE_STOPPING;
- VMReleaseAllVoices(pEASData->pVoiceMgr, pData->pSynth);
- return EAS_SUCCESS;
- }
-
- /* loop back to start of notes */
- if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->repeatOffset)) != EAS_SUCCESS)
- return result;
- continue;
- }
-
- /* still have a note to process */
- else
- c = ',';
- }
-
- /* bpm */
- if (c == 'b')
- {
- /* peek at next character */
- if ((result = RTTTL_PeekNextChar(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
- return result;
-
- /* if a number, must be octave or tempo */
- if (IsDigit(c))
- {
- if ((result = RTTTL_GetNumber(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
-
- /* check for octave first */
- if ((temp >= 4) && (temp <= 7))
- {
- octave = (EAS_U8) temp;
- }
-
- /* check for tempo */
- else if ((temp >= 25) && (temp <= 900))
- {
- pData->tick = TICK_CONVERT / (EAS_U32) temp;
- }
-
- /* don't know what it was */
- else
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* must be a note */
- else
- {
- note = noteTable[1];
- }
- }
-
- /* octave */
- else if (c == 'o')
- {
- if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &pData->octave)) != EAS_SUCCESS)
- return result;
- }
-
- /* style */
- else if (c == 's')
- {
- if ((result = RTTTL_GetStyle(pEASData->hwInstData, pData)) != EAS_SUCCESS)
- return result;
- }
-
- /* duration or octave */
- else if (IsDigit(c))
- {
- RTTTL_PutBackChar(pData, c);
-
- /* duration comes before note */
- if (!note)
- {
- if ((result = RTTTL_GetDuration(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
- return result;
- ticks = c * pData->tick;
- }
-
- /* octave comes after note */
- else
- {
- if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &octave)) != EAS_SUCCESS)
- return result;
- }
- }
-
- /* note or rest */
- else if ((c >= 'a') && (c <= 'h'))
- {
- note = noteTable[c - 'a'];
- }
-
- else if (c == 'p')
- {
- note = RTTTL_REST;
- }
-
- /* dotted note */
- else if (c == '.')
- {
- /*lint -e{704} shift for performance */
- ticks += ticks >> 1;
- }
-
- /* accidental */
- else if (c == '#')
- {
- if (note)
- note++;
- }
-
- /* end of event */
- else if ((c == ',') && note)
- {
-
- /* handle note events */
- if (note != RTTTL_REST)
- {
-
- /* save note and start it */
- pData->note = note + octave;
- if (parserMode == eParserModePlay)
- VMStartNote(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, pData->note, RTTTL_VELOCITY);
-
- /* determine note length */
- switch (pData->style)
- {
- /* natural */
- case 'n':
- /*lint -e{704} shift for performance */
- pData->restTicks = ticks >> 4;
- break;
- /* continuous */
-
- case 'c':
- pData->restTicks = 0;
- break;
-
- /* staccato */
- case 's':
- /*lint -e{704} shift for performance */
- pData->restTicks = ticks >> 1;
- break;
-
- default:
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "RTTTL_Event: Unexpected style type %c\n", pData->style); */ }
- break;
- }
-
- /* next event is at end of this note */
- pData->time += ticks - pData->restTicks;
- }
-
- /* rest */
- else
- pData->time += ticks;
-
- /* event found, return to caller */
- break;
- }
- }
-
- pData->state = EAS_STATE_PLAY;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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) reserved for future use */
-static EAS_RESULT RTTTL_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 *pState)
-{
- S_RTTTL_DATA* pData;
-
- /* establish pointer to instance data */
- pData = (S_RTTTL_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;
- }
-
- if (pData->state == EAS_STATE_PAUSING)
- {
- if (VMActiveVoices(pData->pSynth) == 0)
- pData->state = EAS_STATE_PAUSED;
- }
-
- /* return current state */
- *pState = pData->state;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_RTTTL_DATA* pData;
- EAS_RESULT result;
-
- pData = (S_RTTTL_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;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_RTTTL_DATA* pData;
- EAS_RESULT result;
-
- pData = (S_RTTTL_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 = RTTTL_ParseHeader (pEASData, pData, EAS_TRUE)) != EAS_SUCCESS)
- return result;
-
- pData->state = EAS_STATE_READY;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_RTTTL_DATA *pData;
-
- /* can't pause a stopped stream */
- pData = (S_RTTTL_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;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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) reserved for future use */
-static EAS_RESULT RTTTL_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_RTTTL_DATA *pData;
-
- /* can't resume a stopped stream */
- pData = (S_RTTTL_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;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_SetData()
- *----------------------------------------------------------------------------
- * Purpose:
- * Return file type
- *
- * Inputs:
- * pEASData - pointer to overall EAS data structure
- * handle - pointer to file handle
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-/*lint -esym(715, pEASData) reserved for future use */
-static EAS_RESULT RTTTL_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value)
-{
- S_RTTTL_DATA *pData;
-
- pData = (S_RTTTL_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;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetData()
- *----------------------------------------------------------------------------
- * Purpose:
- * Return file type
- *
- * Inputs:
- * pEASData - pointer to overall EAS data structure
- * handle - pointer to file handle
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-/*lint -esym(715, pEASData) reserved for future use */
-static EAS_RESULT RTTTL_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue)
-{
- S_RTTTL_DATA *pData;
-
- pData = (S_RTTTL_DATA *) pInstData;
- switch (param)
- {
- /* return file type as RTTTL */
- case PARSER_DATA_FILE_TYPE:
- *pValue = EAS_FILE_RTTTL;
- break;
-
-#if 0
- /* set transposition */
- case PARSER_DATA_TRANSPOSITION:
- *pValue = pData->transposition;
- break;
-#endif
-
- case PARSER_DATA_SYNTH_HANDLE:
- *pValue = (EAS_I32) pData->pSynth;
- break;
-
- case PARSER_DATA_GAIN_OFFSET:
- *pValue = RTTTL_GAIN_OFFSET;
- break;
-
- default:
- return EAS_ERROR_INVALID_PARAMETER;
- }
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetStyle()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetStyle (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData)
-{
- EAS_RESULT result;
- EAS_I8 style;
-
- /* get style */
- if ((result = RTTTL_GetNextChar(hwInstData, pData, &style)) != EAS_SUCCESS)
- return result;
-
- if ((style != 's') && (style != 'n') && (style != 'c'))
- return EAS_ERROR_FILE_FORMAT;
-
- pData->style = style;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetDuration()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pDuration)
-{
- EAS_RESULT result;
- EAS_I32 duration;
- EAS_I8 temp;
-
- /* get the duration */
- if ((result = RTTTL_GetNumber(hwInstData, pData, &duration)) != EAS_SUCCESS)
- return result;
-
- if ((duration != 1) && (duration != 2) && (duration != 4) && (duration != 8) && (duration != 16) && (duration != 32))
- return EAS_ERROR_FILE_FORMAT;
-
- temp = 64;
- while (duration)
- {
- /*lint -e{704} shift for performance */
- duration = duration >> 1;
- /*lint -e{702} use shift for performance */
- temp = temp >> 1;
- }
-
- *pDuration = temp;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetOctave()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetOctave (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_U8 *pOctave)
-{
- EAS_RESULT result;
- EAS_I32 octave;
-
- /* get the tempo */
- if ((result = RTTTL_GetNumber(hwInstData, pData, &octave)) != EAS_SUCCESS)
- return result;
-
- if ((octave < 4) || (octave > 7))
- return EAS_ERROR_FILE_FORMAT;
-
- *pOctave = (EAS_U8) (octave * 12);
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetTempo()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetTempo (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData)
-{
- EAS_RESULT result;
- EAS_I32 tempo;
-
- /* get the tempo */
- if ((result = RTTTL_GetNumber(hwInstData, pData, &tempo)) != EAS_SUCCESS)
- return result;
-
- if ((tempo < 25) || (tempo > 900))
- return EAS_ERROR_FILE_FORMAT;
-
- pData->tick = TICK_CONVERT / (EAS_U32) tempo;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetNumber()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I32 *pValue)
-{
- EAS_RESULT result;
- EAS_INT temp;
- EAS_I8 c;
-
- *pValue = -1;
- temp = 0;
- for (;;)
- {
- if ((result = RTTTL_PeekNextChar(hwInstData, pData, &c)) != EAS_SUCCESS)
- {
- if ((result == EAS_EOF) && (*pValue != -1))
- return EAS_SUCCESS;
- return result;
- }
-
- if (IsDigit(c))
- {
- pData->dataByte = 0;
- temp = temp * 10 + c - '0';
- *pValue = temp;
- }
- else
- return EAS_SUCCESS;
- }
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_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 RTTTL_ParseHeader (S_EAS_DATA *pEASData, S_RTTTL_DATA* pData, EAS_BOOL metaData)
-{
- EAS_RESULT result;
- EAS_I32 i;
- EAS_I8 temp;
- EAS_I8 control;
-
- /* initialize some defaults */
- pData->time = 0;
- pData->tick = DEFAULT_TICK_CONV;
- pData->note = 0;
- pData->duration = 4;
- pData ->restTicks = 0;
- pData->octave = 60;
- pData->repeatOffset = -1;
- pData->repeatCount = 0;
- pData->style = 'n';
- pData->dataByte = 0;
-
- metaData = metaData && (pData->metadata.buffer != NULL) && (pData->metadata.callback != NULL);
-
- /* seek to start of data */
- if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->fileOffset)) != EAS_SUCCESS)
- return result;
-
- /* zero the metadata buffer */
- if (metaData)
- EAS_HWMemSet(pData->metadata.buffer, 0, pData->metadata.bufferSize);
-
- /* read the title */
- for (i = 0; i < RTTTL_MAX_TITLE_LEN; i++)
- {
- if ((result = EAS_HWGetByte(pEASData->hwInstData, pData->fileHandle, &temp)) != EAS_SUCCESS)
- return result;
-
- if (temp == ':')
- break;
-
- /* pass along metadata */
- if (metaData)
- {
- if (i < (pData->metadata.bufferSize- 1))
- pData->metadata.buffer[i] = (char) temp;
- }
- }
-
- /* check for error in title */
- if (i == RTTTL_MAX_TITLE_LEN)
- return EAS_ERROR_FILE_FORMAT;
-
- /* pass along metadata */
- if (metaData)
- (*pData->metadata.callback)(EAS_METADATA_TITLE, pData->metadata.buffer, pData->metadata.pUserData);
-
- /* control fields */
- for (;;)
- {
-
- /* get control type */
- if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &control)) != EAS_SUCCESS)
- return result;
-
- /* next char should be equal sign */
- if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
- if (temp != '=')
- return EAS_ERROR_FILE_FORMAT;
-
- /* get the control value */
- switch (control)
- {
-
- /* bpm */
- case 'b':
- if ((result = RTTTL_GetTempo(pEASData->hwInstData, pData)) != EAS_SUCCESS)
- return result;
- break;
-
- /* duration */
- case 'd':
- if ((result = RTTTL_GetDuration(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
- pData->duration = temp;
- break;
-
- /* loop */
- case 'l':
- if ((result = RTTTL_GetNumber(pEASData->hwInstData, pData, &i)) != EAS_SUCCESS)
- return result;
- if ((i < 0) || (i > 15))
- return EAS_ERROR_FILE_FORMAT;
- pData->repeatCount = (EAS_U8) i;
- break;
-
- /* octave */
- case 'o':
- if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &pData->octave)) != EAS_SUCCESS)
- return result;
- break;
-
- /* get style */
- case 's':
- if ((result = RTTTL_GetStyle(pEASData->hwInstData, pData)) != EAS_SUCCESS)
- return result;
- break;
-
- /* unrecognized control */
- default:
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* next character should be comma or colon */
- if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
-
- /* check for end of control field */
- if (temp == ':')
- break;
-
- /* must be a comma */
- if (temp != ',')
- return EAS_ERROR_FILE_FORMAT;
- }
-
- /* should be at the start of the music block */
- if ((result = EAS_HWFilePos(pEASData->hwInstData, pData->fileHandle, &pData->repeatOffset)) != EAS_SUCCESS)
- return result;
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_GetNextChar()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue)
-{
- EAS_RESULT result;
- EAS_I8 temp;
-
- *pValue = 0;
- for(;;)
- {
-
- /* check for character that has been put back */
- if (pData->dataByte)
- {
- temp = pData->dataByte;
- pData->dataByte = 0;
- }
- else
- {
- if ((result = EAS_HWGetByte(hwInstData, pData->fileHandle, &temp)) != EAS_SUCCESS)
- return result;
- }
-
- /* ignore white space */
- if (!IsSpace(temp))
- {
- *pValue = ToLower(temp);
- return EAS_SUCCESS;
- }
- }
-}
-
-/*----------------------------------------------------------------------------
- * RTTTL_PeekNextChar()
- *----------------------------------------------------------------------------
- * Purpose:
- *
- *
- * Inputs:
- *
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT RTTTL_PeekNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue)
-{
- EAS_RESULT result;
- EAS_I8 temp;
-
- *pValue = 0;
- for(;;)
- {
-
- /* read a character from the file, if necessary */
- if (!pData->dataByte)
- {
- if ((result = EAS_HWGetByte(hwInstData, pData->fileHandle, &pData->dataByte)) != EAS_SUCCESS)
- return result;
-
- }
- temp = pData->dataByte;
-
- /* ignore white space */
- if (!IsSpace(temp))
- {
- *pValue = ToLower(temp);
- return EAS_SUCCESS;
- }
- pData->dataByte = 0;
- }
-}
-
+ *
+ *----------------------------------------------------------------------------
+ * Revision Control:
+ * $Revision: 795 $
+ * $Date: 2007-08-01 00:14:45 -0700 (Wed, 01 Aug 2007) $
+ *----------------------------------------------------------------------------
+*/
+
+#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_rtttldata.h"
+#include "eas_ctype.h"
+
+/* increase gain for mono ringtones */
+#define RTTTL_GAIN_OFFSET 8
+
+/* maximum title length including colon separator */
+#define RTTTL_MAX_TITLE_LEN 32
+#define RTTTL_INFINITE_LOOP 15
+
+/* length of 32nd note in 1/256ths of a msec for 63 BPM tempo */
+#define DEFAULT_TICK_CONV 30476
+#define TICK_CONVERT 1920000
+
+/* default channel and program for RTTTL playback */
+#define RTTTL_CHANNEL 0
+#define RTTTL_PROGRAM 80
+#define RTTTL_VELOCITY 127
+
+/* note used for rest */
+#define RTTTL_REST 1
+
+/* multiplier for fixed point triplet conversion */
+#define TRIPLET_MULTIPLIER 683
+#define TRIPLET_SHIFT 10
+
+/* local prototypes */
+static EAS_RESULT RTTTL_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset);
+static EAS_RESULT RTTTL_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
+static EAS_RESULT RTTTL_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime);
+static EAS_RESULT RTTTL_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode);
+static EAS_RESULT RTTTL_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_STATE *pState);
+static EAS_RESULT RTTTL_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
+static EAS_RESULT RTTTL_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
+static EAS_RESULT RTTTL_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
+static EAS_RESULT RTTTL_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
+static EAS_RESULT RTTTL_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value);
+static EAS_RESULT RTTTL_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue);
+static EAS_RESULT RTTTL_GetStyle (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData);
+static EAS_RESULT RTTTL_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pDuration);
+static EAS_RESULT RTTTL_GetOctave (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_U8 *pOctave);
+static EAS_RESULT RTTTL_GetTempo (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData);
+static EAS_RESULT RTTTL_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I32 *pValue);
+static EAS_RESULT RTTTL_ParseHeader (S_EAS_DATA *pEASData, S_RTTTL_DATA* pData, EAS_BOOL metaData);
+static EAS_RESULT RTTTL_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue);
+static EAS_RESULT RTTTL_PeekNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue);
+
+/* inline functions */
+EAS_INLINE void RTTTL_PutBackChar (S_RTTTL_DATA *pData, EAS_I8 value) { pData->dataByte = value; }
+
+
+/* lookup table for note values */
+static const EAS_U8 noteTable[] = { 21, 23, 12, 14, 16, 17, 19, 23 };
+
+/*----------------------------------------------------------------------------
+ *
+ * EAS_RTTTL_Parser
+ *
+ * This structure contains the functional interface for the iMelody parser
+ *----------------------------------------------------------------------------
+*/
+const S_FILE_PARSER_INTERFACE EAS_RTTTL_Parser =
+{
+ RTTTL_CheckFileType,
+ RTTTL_Prepare,
+ RTTTL_Time,
+ RTTTL_Event,
+ RTTTL_State,
+ RTTTL_Close,
+ RTTTL_Reset,
+ RTTTL_Pause,
+ RTTTL_Resume,
+ NULL,
+ RTTTL_SetData,
+ RTTTL_GetData,
+ NULL
+};
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset)
+{
+ S_RTTTL_DATA data;
+ S_RTTTL_DATA *pData;
+
+ /* see if we can parse the header */
+ data.fileHandle = fileHandle;
+ data.fileOffset = offset;
+ *ppHandle= NULL;
+ if (RTTTL_ParseHeader (pEASData, &data, EAS_FALSE) == EAS_SUCCESS)
+ {
+
+ /* check for static memory allocation */
+ if (pEASData->staticMemoryModel)
+ pData = EAS_CMEnumData(EAS_CM_RTTTL_DATA);
+ else
+ pData = EAS_HWMalloc(pEASData->hwInstData, sizeof(S_RTTTL_DATA));
+ if (!pData)
+ return EAS_ERROR_MALLOC_FAILED;
+ EAS_HWMemSet(pData, 0, sizeof(S_RTTTL_DATA));
+
+ /* return a pointer to the instance data */
+ pData->fileHandle = fileHandle;
+ pData->fileOffset = offset;
+ pData->state = EAS_STATE_OPEN;
+ *ppHandle = pData;
+ }
+
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
+{
+ S_RTTTL_DATA* pData;
+ EAS_RESULT result;
+
+ /* check for valid state */
+ pData = (S_RTTTL_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;
+ }
+
+ pData->state = EAS_STATE_ERROR;
+ if ((result = RTTTL_ParseHeader (pEASData, pData, (EAS_BOOL) (pData->metadata.callback != NULL))) != EAS_SUCCESS)
+ {
+ /* if using dynamic memory, free it */
+ if (!pEASData->staticMemoryModel)
+ EAS_HWFree(pEASData->hwInstData, pData);
+ return result;
+ }
+
+ pData->state = EAS_STATE_READY;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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) reserved for future use */
+static EAS_RESULT RTTTL_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime)
+{
+ S_RTTTL_DATA *pData;
+
+ pData = (S_RTTTL_DATA*) pInstData;
+
+ /* return time in milliseconds */
+ /*lint -e{704} use shift instead of division */
+ *pTime = pData->time >> 8;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode)
+{
+ S_RTTTL_DATA* pData;
+ EAS_RESULT result;
+ EAS_I32 ticks;
+ EAS_I32 temp;
+ EAS_I8 c;
+ EAS_U8 note;
+ EAS_U8 octave;
+
+ pData = (S_RTTTL_DATA*) pInstData;
+ if (pData->state >= EAS_STATE_OPEN)
+ return EAS_SUCCESS;
+
+ /* initialize MIDI channel when the track starts playing */
+ if (pData->time == 0)
+ {
+ /* set program to square lead */
+ VMProgramChange(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, RTTTL_PROGRAM);
+
+ /* set channel volume to max */
+ VMControlChange(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, 7, 127);
+ }
+
+ /* check for end of note */
+ if (pData->note)
+ {
+ /* stop the note */
+ VMStopNote(pEASData->pVoiceMgr, pData->pSynth, RTTTL_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 */
+ octave = pData->octave;
+ note = 0;
+ ticks = pData->duration * pData->tick;
+ for (;;)
+ {
+
+ /* get next character */
+ if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
+ {
+ if (result != EAS_EOF)
+ return result;
+
+ /* end of file, if no notes to process, check for looping */
+ if (!note)
+ {
+ /* if no loop set state to stopping */
+ if (pData->repeatCount == 0)
+ {
+ pData->state = EAS_STATE_STOPPING;
+ VMReleaseAllVoices(pEASData->pVoiceMgr, pData->pSynth);
+ return EAS_SUCCESS;
+ }
+
+ /* decrement loop count */
+ if (pData->repeatCount != RTTTL_INFINITE_LOOP)
+ pData->repeatCount--;
+
+ /* if locating, ignore infinite loops */
+ else if (parserMode != eParserModePlay)
+ {
+ pData->state = EAS_STATE_STOPPING;
+ VMReleaseAllVoices(pEASData->pVoiceMgr, pData->pSynth);
+ return EAS_SUCCESS;
+ }
+
+ /* loop back to start of notes */
+ if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->repeatOffset)) != EAS_SUCCESS)
+ return result;
+ continue;
+ }
+
+ /* still have a note to process */
+ else
+ c = ',';
+ }
+
+ /* bpm */
+ if (c == 'b')
+ {
+ /* peek at next character */
+ if ((result = RTTTL_PeekNextChar(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
+ return result;
+
+ /* if a number, must be octave or tempo */
+ if (IsDigit(c))
+ {
+ if ((result = RTTTL_GetNumber(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
+ return result;
+
+ /* check for octave first */
+ if ((temp >= 4) && (temp <= 7))
+ {
+ octave = (EAS_U8) temp;
+ }
+
+ /* check for tempo */
+ else if ((temp >= 25) && (temp <= 900))
+ {
+ pData->tick = TICK_CONVERT / (EAS_U32) temp;
+ }
+
+ /* don't know what it was */
+ else
+ return EAS_ERROR_FILE_FORMAT;
+ }
+
+ /* must be a note */
+ else
+ {
+ note = noteTable[1];
+ }
+ }
+
+ /* octave */
+ else if (c == 'o')
+ {
+ if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &pData->octave)) != EAS_SUCCESS)
+ return result;
+ }
+
+ /* style */
+ else if (c == 's')
+ {
+ if ((result = RTTTL_GetStyle(pEASData->hwInstData, pData)) != EAS_SUCCESS)
+ return result;
+ }
+
+ /* duration or octave */
+ else if (IsDigit(c))
+ {
+ RTTTL_PutBackChar(pData, c);
+
+ /* duration comes before note */
+ if (!note)
+ {
+ if ((result = RTTTL_GetDuration(pEASData->hwInstData, pData, &c)) != EAS_SUCCESS)
+ return result;
+ ticks = c * pData->tick;
+ }
+
+ /* octave comes after note */
+ else
+ {
+ if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &octave)) != EAS_SUCCESS)
+ return result;
+ }
+ }
+
+ /* note or rest */
+ else if ((c >= 'a') && (c <= 'h'))
+ {
+ note = noteTable[c - 'a'];
+ }
+
+ else if (c == 'p')
+ {
+ note = RTTTL_REST;
+ }
+
+ /* dotted note */
+ else if (c == '.')
+ {
+ /*lint -e{704} shift for performance */
+ ticks += ticks >> 1;
+ }
+
+ /* accidental */
+ else if (c == '#')
+ {
+ if (note)
+ note++;
+ }
+
+ /* end of event */
+ else if ((c == ',') && note)
+ {
+
+ /* handle note events */
+ if (note != RTTTL_REST)
+ {
+
+ /* save note and start it */
+ pData->note = note + octave;
+ if (parserMode == eParserModePlay)
+ VMStartNote(pEASData->pVoiceMgr, pData->pSynth, RTTTL_CHANNEL, pData->note, RTTTL_VELOCITY);
+
+ /* determine note length */
+ switch (pData->style)
+ {
+ /* natural */
+ case 'n':
+ /*lint -e{704} shift for performance */
+ pData->restTicks = ticks >> 4;
+ break;
+ /* continuous */
+
+ case 'c':
+ pData->restTicks = 0;
+ break;
+
+ /* staccato */
+ case 's':
+ /*lint -e{704} shift for performance */
+ pData->restTicks = ticks >> 1;
+ break;
+
+ default:
+ { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "RTTTL_Event: Unexpected style type %c\n", pData->style); */ }
+ break;
+ }
+
+ /* next event is at end of this note */
+ pData->time += ticks - pData->restTicks;
+ }
+
+ /* rest */
+ else
+ pData->time += ticks;
+
+ /* event found, return to caller */
+ break;
+ }
+ }
+
+ pData->state = EAS_STATE_PLAY;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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) reserved for future use */
+static EAS_RESULT RTTTL_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 *pState)
+{
+ S_RTTTL_DATA* pData;
+
+ /* establish pointer to instance data */
+ pData = (S_RTTTL_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;
+ }
+
+ if (pData->state == EAS_STATE_PAUSING)
+ {
+ if (VMActiveVoices(pData->pSynth) == 0)
+ pData->state = EAS_STATE_PAUSED;
+ }
+
+ /* return current state */
+ *pState = pData->state;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
+{
+ S_RTTTL_DATA* pData;
+ EAS_RESULT result;
+
+ pData = (S_RTTTL_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;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
+{
+ S_RTTTL_DATA* pData;
+ EAS_RESULT result;
+
+ pData = (S_RTTTL_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 = RTTTL_ParseHeader (pEASData, pData, EAS_TRUE)) != EAS_SUCCESS)
+ return result;
+
+ pData->state = EAS_STATE_READY;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
+{
+ S_RTTTL_DATA *pData;
+
+ /* can't pause a stopped stream */
+ pData = (S_RTTTL_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;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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) reserved for future use */
+static EAS_RESULT RTTTL_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
+{
+ S_RTTTL_DATA *pData;
+
+ /* can't resume a stopped stream */
+ pData = (S_RTTTL_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;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_SetData()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ * Return file type
+ *
+ * Inputs:
+ * pEASData - pointer to overall EAS data structure
+ * handle - pointer to file handle
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+/*lint -esym(715, pEASData) reserved for future use */
+static EAS_RESULT RTTTL_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value)
+{
+ S_RTTTL_DATA *pData;
+
+ pData = (S_RTTTL_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;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetData()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ * Return file type
+ *
+ * Inputs:
+ * pEASData - pointer to overall EAS data structure
+ * handle - pointer to file handle
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+/*lint -esym(715, pEASData) reserved for future use */
+static EAS_RESULT RTTTL_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue)
+{
+ S_RTTTL_DATA *pData;
+
+ pData = (S_RTTTL_DATA *) pInstData;
+ switch (param)
+ {
+ /* return file type as RTTTL */
+ case PARSER_DATA_FILE_TYPE:
+ *pValue = EAS_FILE_RTTTL;
+ break;
+
+#if 0
+ /* set transposition */
+ case PARSER_DATA_TRANSPOSITION:
+ *pValue = pData->transposition;
+ break;
+#endif
+
+ case PARSER_DATA_SYNTH_HANDLE:
+ *pValue = (EAS_I32) pData->pSynth;
+ break;
+
+ case PARSER_DATA_GAIN_OFFSET:
+ *pValue = RTTTL_GAIN_OFFSET;
+ break;
+
+ default:
+ return EAS_ERROR_INVALID_PARAMETER;
+ }
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetStyle()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetStyle (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData)
+{
+ EAS_RESULT result;
+ EAS_I8 style;
+
+ /* get style */
+ if ((result = RTTTL_GetNextChar(hwInstData, pData, &style)) != EAS_SUCCESS)
+ return result;
+
+ if ((style != 's') && (style != 'n') && (style != 'c'))
+ return EAS_ERROR_FILE_FORMAT;
+
+ pData->style = style;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetDuration()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetDuration (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pDuration)
+{
+ EAS_RESULT result;
+ EAS_I32 duration;
+ EAS_I8 temp;
+
+ /* get the duration */
+ if ((result = RTTTL_GetNumber(hwInstData, pData, &duration)) != EAS_SUCCESS)
+ return result;
+
+ if ((duration != 1) && (duration != 2) && (duration != 4) && (duration != 8) && (duration != 16) && (duration != 32))
+ return EAS_ERROR_FILE_FORMAT;
+
+ temp = 64;
+ while (duration)
+ {
+ /*lint -e{704} shift for performance */
+ duration = duration >> 1;
+ /*lint -e{702} use shift for performance */
+ temp = temp >> 1;
+ }
+
+ *pDuration = temp;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetOctave()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetOctave (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_U8 *pOctave)
+{
+ EAS_RESULT result;
+ EAS_I32 octave;
+
+ /* get the tempo */
+ if ((result = RTTTL_GetNumber(hwInstData, pData, &octave)) != EAS_SUCCESS)
+ return result;
+
+ if ((octave < 4) || (octave > 7))
+ return EAS_ERROR_FILE_FORMAT;
+
+ *pOctave = (EAS_U8) (octave * 12);
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetTempo()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetTempo (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData)
+{
+ EAS_RESULT result;
+ EAS_I32 tempo;
+
+ /* get the tempo */
+ if ((result = RTTTL_GetNumber(hwInstData, pData, &tempo)) != EAS_SUCCESS)
+ return result;
+
+ if ((tempo < 25) || (tempo > 900))
+ return EAS_ERROR_FILE_FORMAT;
+
+ pData->tick = TICK_CONVERT / (EAS_U32) tempo;
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetNumber()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetNumber (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I32 *pValue)
+{
+ EAS_RESULT result;
+ EAS_INT temp;
+ EAS_I8 c;
+
+ *pValue = -1;
+ temp = 0;
+ for (;;)
+ {
+ if ((result = RTTTL_PeekNextChar(hwInstData, pData, &c)) != EAS_SUCCESS)
+ {
+ if ((result == EAS_EOF) && (*pValue != -1))
+ return EAS_SUCCESS;
+ return result;
+ }
+
+ if (IsDigit(c))
+ {
+ pData->dataByte = 0;
+ temp = temp * 10 + c - '0';
+ *pValue = temp;
+ }
+ else
+ return EAS_SUCCESS;
+ }
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_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 RTTTL_ParseHeader (S_EAS_DATA *pEASData, S_RTTTL_DATA* pData, EAS_BOOL metaData)
+{
+ EAS_RESULT result;
+ EAS_I32 i;
+ EAS_I8 temp;
+ EAS_I8 control;
+
+ /* initialize some defaults */
+ pData->time = 0;
+ pData->tick = DEFAULT_TICK_CONV;
+ pData->note = 0;
+ pData->duration = 4;
+ pData ->restTicks = 0;
+ pData->octave = 60;
+ pData->repeatOffset = -1;
+ pData->repeatCount = 0;
+ pData->style = 'n';
+ pData->dataByte = 0;
+
+ metaData = metaData && (pData->metadata.buffer != NULL) && (pData->metadata.callback != NULL);
+
+ /* seek to start of data */
+ if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->fileOffset)) != EAS_SUCCESS)
+ return result;
+
+ /* zero the metadata buffer */
+ if (metaData)
+ EAS_HWMemSet(pData->metadata.buffer, 0, pData->metadata.bufferSize);
+
+ /* read the title */
+ for (i = 0; i < RTTTL_MAX_TITLE_LEN; i++)
+ {
+ if ((result = EAS_HWGetByte(pEASData->hwInstData, pData->fileHandle, &temp)) != EAS_SUCCESS)
+ return result;
+
+ if (temp == ':')
+ break;
+
+ /* pass along metadata */
+ if (metaData)
+ {
+ if (i < (pData->metadata.bufferSize- 1))
+ pData->metadata.buffer[i] = (char) temp;
+ }
+ }
+
+ /* check for error in title */
+ if (i == RTTTL_MAX_TITLE_LEN)
+ return EAS_ERROR_FILE_FORMAT;
+
+ /* pass along metadata */
+ if (metaData)
+ (*pData->metadata.callback)(EAS_METADATA_TITLE, pData->metadata.buffer, pData->metadata.pUserData);
+
+ /* control fields */
+ for (;;)
+ {
+
+ /* get control type */
+ if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &control)) != EAS_SUCCESS)
+ return result;
+
+ /* next char should be equal sign */
+ if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
+ return result;
+ if (temp != '=')
+ return EAS_ERROR_FILE_FORMAT;
+
+ /* get the control value */
+ switch (control)
+ {
+
+ /* bpm */
+ case 'b':
+ if ((result = RTTTL_GetTempo(pEASData->hwInstData, pData)) != EAS_SUCCESS)
+ return result;
+ break;
+
+ /* duration */
+ case 'd':
+ if ((result = RTTTL_GetDuration(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
+ return result;
+ pData->duration = temp;
+ break;
+
+ /* loop */
+ case 'l':
+ if ((result = RTTTL_GetNumber(pEASData->hwInstData, pData, &i)) != EAS_SUCCESS)
+ return result;
+ if ((i < 0) || (i > 15))
+ return EAS_ERROR_FILE_FORMAT;
+ pData->repeatCount = (EAS_U8) i;
+ break;
+
+ /* octave */
+ case 'o':
+ if ((result = RTTTL_GetOctave(pEASData->hwInstData, pData, &pData->octave)) != EAS_SUCCESS)
+ return result;
+ break;
+
+ /* get style */
+ case 's':
+ if ((result = RTTTL_GetStyle(pEASData->hwInstData, pData)) != EAS_SUCCESS)
+ return result;
+ break;
+
+ /* unrecognized control */
+ default:
+ return EAS_ERROR_FILE_FORMAT;
+ }
+
+ /* next character should be comma or colon */
+ if ((result = RTTTL_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
+ return result;
+
+ /* check for end of control field */
+ if (temp == ':')
+ break;
+
+ /* must be a comma */
+ if (temp != ',')
+ return EAS_ERROR_FILE_FORMAT;
+ }
+
+ /* should be at the start of the music block */
+ if ((result = EAS_HWFilePos(pEASData->hwInstData, pData->fileHandle, &pData->repeatOffset)) != EAS_SUCCESS)
+ return result;
+
+ return EAS_SUCCESS;
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_GetNextChar()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue)
+{
+ EAS_RESULT result;
+ EAS_I8 temp;
+
+ *pValue = 0;
+ for(;;)
+ {
+
+ /* check for character that has been put back */
+ if (pData->dataByte)
+ {
+ temp = pData->dataByte;
+ pData->dataByte = 0;
+ }
+ else
+ {
+ if ((result = EAS_HWGetByte(hwInstData, pData->fileHandle, &temp)) != EAS_SUCCESS)
+ return result;
+ }
+
+ /* ignore white space */
+ if (!IsSpace(temp))
+ {
+ *pValue = ToLower(temp);
+ return EAS_SUCCESS;
+ }
+ }
+}
+
+/*----------------------------------------------------------------------------
+ * RTTTL_PeekNextChar()
+ *----------------------------------------------------------------------------
+ * Purpose:
+ *
+ *
+ * Inputs:
+ *
+ *
+ * Outputs:
+ *
+ *
+ * Side Effects:
+ *
+ *----------------------------------------------------------------------------
+*/
+static EAS_RESULT RTTTL_PeekNextChar (EAS_HW_DATA_HANDLE hwInstData, S_RTTTL_DATA *pData, EAS_I8 *pValue)
+{
+ EAS_RESULT result;
+ EAS_I8 temp;
+
+ *pValue = 0;
+ for(;;)
+ {
+
+ /* read a character from the file, if necessary */
+ if (!pData->dataByte)
+ {
+ if ((result = EAS_HWGetByte(hwInstData, pData->fileHandle, &pData->dataByte)) != EAS_SUCCESS)
+ return result;
+
+ }
+ temp = pData->dataByte;
+
+ /* ignore white space */
+ if (!IsSpace(temp))
+ {
+ *pValue = ToLower(temp);
+ return EAS_SUCCESS;
+ }
+ pData->dataByte = 0;
+ }
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 23:00:27 +0000