diff options
Diffstat (limited to 'arm-wt-22k/lib_src/eas_tonecontrol.c')
| -rw-r--r-- | arm-wt-22k/lib_src/eas_tonecontrol.c | 941 |
1 files changed, 0 insertions, 941 deletions
diff --git a/arm-wt-22k/lib_src/eas_tonecontrol.c b/arm-wt-22k/lib_src/eas_tonecontrol.c deleted file mode 100644 index 8231b83..0000000 --- a/arm-wt-22k/lib_src/eas_tonecontrol.c +++ /dev/null @@ -1,941 +0,0 @@ -/*----------------------------------------------------------------------------
- *
- * File:
- * eas_tonecontrol.c
- *
- * Contents and purpose:
- * MMAPI ToneControl parser
- *
- * Copyright Sonic Network Inc. 2006
- - * 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: 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_tcdata.h"
-
-
-/* default channel and program for TC playback */
-#define TC_CHANNEL 0
-#define TC_PROGRAM 80
-#define TC_VELOCITY 127
-
-#define TC_FIELD_SILENCE -1
-#define TC_FIELD_VERSION -2
-#define TC_FIELD_TEMPO -3
-#define TC_FIELD_RESOLUTION -4
-#define TC_FIELD_BLOCK_START -5
-#define TC_FIELD_BLOCK_END -6
-#define TC_FIELD_PLAY_BLOCK -7
-#define TC_FIELD_SET_VOLUME -8
-#define TC_FIELD_REPEAT -9
-#define TC_FIELD_INVALID -10
-
-/* convert 0-100 volume to 0-127 velocity using fixed point */
-#define TC_VOLUME_CONV 21307064
-#define TC_VOLUME_SHIFT 24
-
-
-/* local prototypes */
-static EAS_RESULT TC_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset);
-static EAS_RESULT TC_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT TC_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime);
-static EAS_RESULT TC_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode);
-static EAS_RESULT TC_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_STATE *pState);
-static EAS_RESULT TC_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT TC_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT TC_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT TC_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData);
-static EAS_RESULT TC_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value);
-static EAS_RESULT TC_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue);
-static EAS_RESULT TC_ParseHeader (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_StartNote (S_EAS_DATA *pEASData, S_TC_DATA* pData, EAS_INT parserMode, EAS_I8 note);
-static EAS_RESULT TC_GetRepeat (S_EAS_DATA *pEASData, S_TC_DATA* pData, EAS_INT parserMode);
-static EAS_RESULT TC_PlayBlock (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_BlockEnd (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_GetVolume (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_GetTempo (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_GetResolution (S_EAS_DATA *pEASData, S_TC_DATA* pData);
-static EAS_RESULT TC_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_TC_DATA *pData, EAS_I8 *pValue);
-static void TC_PutBackChar (S_TC_DATA *pData, EAS_I8 value);
-
-/* calculate a new tick time based on resolution & tempo */
-EAS_INLINE void TC_CalcTimeBase (S_TC_DATA *pData)
-{
-
- /* ticks in 256ths of a millisecond */
- pData->tick = ((60 * 1000) << 8) / (pData->tempo * pData->resolution);
-}
-
-/*----------------------------------------------------------------------------
- *
- * EAS_TC_Parser
- *
- * This structure contains the functional interface for the iMelody parser
- *----------------------------------------------------------------------------
-*/
-const S_FILE_PARSER_INTERFACE EAS_TC_Parser =
-{
- TC_CheckFileType,
- TC_Prepare,
- TC_Time,
- TC_Event,
- TC_State,
- TC_Close,
- TC_Reset,
- TC_Pause,
- TC_Resume,
- NULL,
- TC_SetData,
- TC_GetData,
- NULL
-};
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_CheckFileType (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, EAS_VOID_PTR *ppHandle, EAS_I32 offset)
-{
- S_TC_DATA data;
- S_TC_DATA *pData;
-
- /* init data */
- EAS_HWMemSet(&data, 0, sizeof(S_TC_DATA));
- data.fileHandle = fileHandle;
- data.fileOffset = offset;
- *ppHandle= NULL;
-
- /* see if we can parse the header */
- if (TC_ParseHeader(pEASData, &data) == EAS_SUCCESS)
- {
-
- /* check for static memory allocation */
- if (pEASData->staticMemoryModel)
- pData = EAS_CMEnumOptData(EAS_MODULE_MMAPI_TONE_CONTROL);
- else
- pData = EAS_HWMalloc(pEASData->hwInstData, sizeof(S_TC_DATA));
- if (!pData)
- return EAS_ERROR_MALLOC_FAILED;
-
- /* copy data to persistent storage */
- EAS_HWMemCpy(pData, &data, sizeof(S_TC_DATA));
-
- /* return a pointer to the instance data */
- pData->state = EAS_STATE_OPEN;
- *ppHandle = pData;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_TC_DATA* pData;
- EAS_RESULT result;
-
- /* check for valid state */
- pData = (S_TC_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;
- }
-
- /* set to ready state */
- pData->state = EAS_STATE_READY;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Time (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_U32 *pTime)
-{
- S_TC_DATA *pData;
-
- pData = (S_TC_DATA*) pInstData;
-
- /* return time in milliseconds */
- /*lint -e{704} use shift instead of division */
- *pTime = pData->time >> 8;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Event (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_INT parserMode)
-{
- S_TC_DATA* pData;
- EAS_RESULT result;
- EAS_I8 temp;
-
- pData = (S_TC_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, TC_CHANNEL, TC_PROGRAM);
-
- /* set channel volume to max */
- VMControlChange(pEASData->pVoiceMgr, pData->pSynth, TC_CHANNEL, 7, 127);
- }
-
- /* check for end of note */
- if (pData->note >= 0)
- {
- /* stop the note */
- VMStopNote(pEASData->pVoiceMgr, pData->pSynth, TC_CHANNEL, (EAS_U8) pData->note, 0);
-
- /* check for repeat note */
- if (pData->repeatCount)
- {
- pData->repeatCount--;
- pData->time += pData->length;
- if ((pData->note >= 0) && (parserMode == eParserModePlay))
- VMStartNote(pEASData->pVoiceMgr, pData->pSynth, TC_CHANNEL, (EAS_U8) pData->note, pData->volume);
- return EAS_SUCCESS;
- }
-
- pData->note = TC_FIELD_SILENCE;
- }
-
- /* parse stream until we get a note or rest */
- for (;;)
- {
-
- /* get next byte from stream */
- if ((result = TC_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- {
- if (result == EAS_EOF)
- {
- pData->state = EAS_STATE_STOPPING;
- return EAS_SUCCESS;
- }
- break;
- }
-
- /* check for musical events */
- if (temp >= TC_FIELD_SILENCE)
- {
- result = TC_StartNote(pEASData, pData, parserMode, temp);
- break;
- }
-
- /* must be a control field */
- switch (temp)
- {
- case TC_FIELD_TEMPO:
- result = TC_GetTempo(pEASData, pData);
- break;
-
- case TC_FIELD_RESOLUTION:
- result = TC_GetResolution(pEASData, pData);
- break;
-
- case TC_FIELD_SET_VOLUME:
- result = TC_GetVolume(pEASData, pData);
- break;
-
- case TC_FIELD_REPEAT:
- result = TC_GetRepeat(pEASData, pData, parserMode);
- break;
-
- case TC_FIELD_PLAY_BLOCK:
- result = TC_PlayBlock(pEASData, pData);
- break;
-
- case TC_FIELD_BLOCK_START:
- result = TC_GetNextChar(pEASData->hwInstData, pData, &temp);
- break;
-
- case TC_FIELD_BLOCK_END:
- result = TC_BlockEnd(pEASData, pData);
- break;
-
- default:
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Unexpected byte 0x%02x in ToneControl stream\n", temp); */ }
- result = EAS_ERROR_FILE_FORMAT;
- }
-
- /* check for error */
- if (result != EAS_SUCCESS)
- break;
- }
-
- /* check for error */
- if (result != EAS_SUCCESS)
- {
- if (result == EAS_EOF)
- result = EAS_ERROR_FILE_FORMAT;
- pData->state = EAS_STATE_ERROR;
- }
- else
- pData->state = EAS_STATE_PLAY;
- return result;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_State (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 *pState)
-{
- S_TC_DATA* pData;
-
- /* establish pointer to instance data */
- pData = (S_TC_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;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Close (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_TC_DATA* pData;
- EAS_RESULT result;
-
- pData = (S_TC_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;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Reset (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_TC_DATA* pData;
- EAS_RESULT result;
-
- pData = (S_TC_DATA*) pInstData;
-
- /* reset the synth */
- VMReset(pEASData->pVoiceMgr, pData->pSynth, EAS_TRUE);
-
- /* reset time to zero */
- pData->time = 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 = TC_ParseHeader (pEASData, pData)) != EAS_SUCCESS)
- return result;
-
- pData->state = EAS_STATE_READY;
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Pause (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_TC_DATA *pData;
-
- /* can't pause a stopped stream */
- pData = (S_TC_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;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_Resume (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
-{
- S_TC_DATA *pData;
-
- /* can't resume a stopped stream */
- pData = (S_TC_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;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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, pInstData, value) reserved for future use */
-static EAS_RESULT TC_SetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 value)
-{
- /* we don't parse any metadata, but we need to return success here */
- if (param == PARSER_DATA_METADATA_CB)
- return EAS_SUCCESS;
-
- return EAS_ERROR_INVALID_PARAMETER;
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetData()
- *----------------------------------------------------------------------------
- * Purpose:
- * Return file type
- *
- * Inputs:
- * pEASData - pointer to overall EAS data structure
- * handle - pointer to file handle
- *
- * Outputs:
- *
- *
- * Side Effects:
- *
- *----------------------------------------------------------------------------
-*/
-/*lint -e{715} common with other parsers */
-static EAS_RESULT TC_GetData (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData, EAS_I32 param, EAS_I32 *pValue)
-{
- S_TC_DATA *pData;
-
- pData = (S_TC_DATA *) pInstData;
- switch (param)
- {
- /* return file type as TC */
- case PARSER_DATA_FILE_TYPE:
- *pValue = EAS_FILE_MMAPI_TONE_CONTROL;
- break;
-
- case PARSER_DATA_SYNTH_HANDLE:
- *pValue = (EAS_I32) pData->pSynth;
- break;
-
- default:
- return EAS_ERROR_INVALID_PARAMETER;
- }
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_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 TC_ParseHeader (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_RESULT result;
- EAS_I8 temp;
-
- /* initialize some defaults */
- pData->time = 0;
- pData->tempo = 120;
- pData->resolution = 64;
- pData->volume = 127;
- pData->repeatCount = 0;
- pData->note = TC_FIELD_SILENCE;
- pData->byteAvail = EAS_FALSE;
-
- /* set default timebase */
- TC_CalcTimeBase(pData);
-
- /* seek to start of data */
- if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->fileOffset)) != EAS_SUCCESS)
- return result;
-
- /* get version */
- if ((result = TC_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
-
- /* check for version number */
- if (temp == TC_FIELD_VERSION)
- {
- TC_GetNextChar(pEASData->hwInstData, pData, &temp);
-// { /* dpp: EAS_ReportEx(_EAS_SEVERITY_INFO, "ToneControl sequence version %d\n", temp); */ }
- }
- else
- return EAS_ERROR_FILE_FORMAT;
-
- /* parse the header data until we find the first note or block */
- for (;;)
- {
-
- /* get next byte from stream */
- if ((result = TC_GetNextChar(pEASData->hwInstData, pData, &temp)) != EAS_SUCCESS)
- return result;
-
- /* check for tempo */
- if (temp == TC_FIELD_TEMPO)
- {
- if ((result = TC_GetTempo(pEASData, pData)) != EAS_SUCCESS)
- return result;
- }
-
- /* or resolution */
- else if (temp == TC_FIELD_TEMPO)
- {
- if ((result = TC_GetResolution(pEASData, pData)) != EAS_SUCCESS)
- return result;
- }
-
- /* must be music data */
- else if (temp > TC_FIELD_INVALID)
- {
- TC_PutBackChar(pData, temp);
- return EAS_SUCCESS;
- }
-
- /* unknown codes */
- else
- {
- { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Unexpected byte 0x%02x in ToneControl stream\n", temp); */ }
- return EAS_ERROR_FILE_FORMAT;
- }
- }
-}
-
-/*----------------------------------------------------------------------------
- * TC_StartNote()
- *----------------------------------------------------------------------------
- * Process a note or silence event
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_StartNote (S_EAS_DATA *pEASData, S_TC_DATA* pData, EAS_INT parserMode, EAS_I8 note)
-{
- EAS_I8 duration;
-
- /* get the duration */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &duration) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- /* calculate time of next event */
- pData->length = (EAS_I32) duration * pData->tick;
- pData->time += pData->length;
-
- /* start the note */
- if ((note >= 0) && (parserMode == eParserModePlay))
- {
- VMStartNote(pEASData->pVoiceMgr, pData->pSynth, TC_CHANNEL, (EAS_U8) note, pData->volume);
- pData->note = note;
- }
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetRepeat()
- *----------------------------------------------------------------------------
- * Process a repeat code
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_GetRepeat (S_EAS_DATA *pEASData, S_TC_DATA* pData, EAS_INT parserMode)
-{
- EAS_I8 count;
-
- /* get the repeat count */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &count) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- /* validiate it */
- if (count < 2)
- return EAS_ERROR_FILE_FORMAT;
-
- /* calculate time of next event */
- pData->time += pData->length;
- pData->repeatCount = count - 2;
-
- /* start the note */
- if ((pData->note >= 0) && (parserMode == eParserModePlay))
- VMStartNote(pEASData->pVoiceMgr, pData->pSynth, TC_CHANNEL, (EAS_U8) pData->note, pData->volume);
-
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_PlayBlock()
- *----------------------------------------------------------------------------
- * Play a block of notes
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_PlayBlock (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_RESULT result;
- EAS_I8 blockNum;
- EAS_I8 temp;
- EAS_I8 temp2;
-
- /* get the block number */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &blockNum) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- /* validiate it */
- if (blockNum < 0)
- return EAS_ERROR_FILE_FORMAT;
-
- /* save the current position */
- if ((result = EAS_HWFilePos(pEASData->hwInstData, pData->fileHandle, &pData->restorePos)) != EAS_SUCCESS)
- return result;
-
- /* return to start of file */
- pData->byteAvail = EAS_FALSE;
- if ((result = EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->fileOffset)) != EAS_SUCCESS)
- return result;
-
- /* find the block */
- for (;;)
- {
- if (TC_GetNextChar(pEASData->hwInstData, pData, &temp) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- if (TC_GetNextChar(pEASData->hwInstData, pData, &temp2) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- if ((temp == TC_FIELD_BLOCK_START) && (temp2 == blockNum))
- return EAS_SUCCESS;
- }
-}
-
-/*----------------------------------------------------------------------------
- * TC_BlockEnd()
- *----------------------------------------------------------------------------
- * Handle end of block
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_BlockEnd (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_I8 blockNum;
-
- /* get the block number */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &blockNum) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
-
- /* validiate it */
- if (blockNum < 0)
- return EAS_ERROR_FILE_FORMAT;
-
- /* if we were playing this block, restore to previous position */
- pData->byteAvail = EAS_FALSE;
- return EAS_HWFileSeek(pEASData->hwInstData, pData->fileHandle, pData->restorePos);
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetVolume()
- *----------------------------------------------------------------------------
- * Get the volume field and process it
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_GetVolume (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_I8 volume;
-
- /* get volume */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &volume) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
- if ((volume < 0) || (volume > 100))
- return EAS_ERROR_FILE_FORMAT;
-
- /* save volume */
- pData->volume = (EAS_U8) ((EAS_I32) (volume * TC_VOLUME_CONV + 1) >> TC_VOLUME_SHIFT);
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetTempo()
- *----------------------------------------------------------------------------
- * Get the tempo field and process it
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_GetTempo (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_I8 tempo;
-
- /* get tempo */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &tempo) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
- if (tempo < 5)
- return EAS_ERROR_FILE_FORMAT;
-
- /* save tempo */
- pData->tempo = tempo;
-
- /* calculate new timebase */
- TC_CalcTimeBase(pData);
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetResolution()
- *----------------------------------------------------------------------------
- * Get the resolution field and process it
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_GetResolution (S_EAS_DATA *pEASData, S_TC_DATA* pData)
-{
- EAS_I8 resolution;
-
- /* get resolution */
- if (TC_GetNextChar(pEASData->hwInstData, pData, &resolution) != EAS_SUCCESS)
- return EAS_ERROR_FILE_FORMAT;
- if (resolution < 0)
- return EAS_ERROR_FILE_FORMAT;
-
- /* save tempo */
- pData->resolution = resolution;
-
- /* calculate new timebase */
- TC_CalcTimeBase(pData);
- return EAS_SUCCESS;
-}
-
-/*----------------------------------------------------------------------------
- * TC_GetNextChar()
- *----------------------------------------------------------------------------
- * Fetch the next character from the stream
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT TC_GetNextChar (EAS_HW_DATA_HANDLE hwInstData, S_TC_DATA *pData, EAS_I8 *pValue)
-{
-
- /* get character from "put back" buffer */
- if (pData->byteAvail)
- {
- pData->byteAvail = EAS_FALSE;
- *pValue = pData->dataByte;
- return EAS_SUCCESS;
- }
-
- /* get character from file */
- return EAS_HWGetByte(hwInstData, pData->fileHandle, pValue);
-}
-
-/*----------------------------------------------------------------------------
- * TC_PutBackChar()
- *----------------------------------------------------------------------------
- * Put back the character
- *----------------------------------------------------------------------------
-*/
-static void TC_PutBackChar (S_TC_DATA *pData, EAS_I8 value)
-{
-
- pData->dataByte = value;
- pData->byteAvail = EAS_TRUE;
-}
-
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