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Diffstat (limited to 'arm-wt-22k/lib_src/eas_public.c')
| -rw-r--r-- | arm-wt-22k/lib_src/eas_public.c | 2607 |
1 files changed, 2607 insertions, 0 deletions
diff --git a/arm-wt-22k/lib_src/eas_public.c b/arm-wt-22k/lib_src/eas_public.c new file mode 100644 index 0000000..234e8cd --- /dev/null +++ b/arm-wt-22k/lib_src/eas_public.c @@ -0,0 +1,2607 @@ +/*---------------------------------------------------------------------------- + * + * File: + * eas_public.c + * + * Contents and purpose: + * Contains EAS library public interface + * + * Copyright Sonic Network Inc. 2004 + + * 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: 842 $ + * $Date: 2007-08-23 14:32:31 -0700 (Thu, 23 Aug 2007) $ + *---------------------------------------------------------------------------- +*/ + +#include "eas_synthcfg.h" +#include "eas.h" +#include "eas_config.h" +#include "eas_host.h" +#include "eas_report.h" +#include "eas_data.h" +#include "eas_parser.h" +#include "eas_pcm.h" +#include "eas_midi.h" +#include "eas_mixer.h" +#include "eas_build.h" +#include "eas_vm_protos.h" +#include "eas_math.h" + +#ifdef JET_INTERFACE +#include "jet_data.h" +#endif + +#ifdef DLS_SYNTHESIZER +#include "eas_mdls.h" +#endif + +/* number of events to parse before calling EAS_HWYield function */ +#define YIELD_EVENT_COUNT 10 + +/*---------------------------------------------------------------------------- + * easLibConfig + * + * This structure is available through the EAS public interface to allow + * the user to check the configuration of the library. + *---------------------------------------------------------------------------- +*/ +static const S_EAS_LIB_CONFIG easLibConfig = +{ + LIB_VERSION, +#ifdef _CHECKED_BUILD + EAS_TRUE, +#else + EAS_FALSE, +#endif + MAX_SYNTH_VOICES, + NUM_OUTPUT_CHANNELS, + _OUTPUT_SAMPLE_RATE, + BUFFER_SIZE_IN_MONO_SAMPLES, +#ifdef _FILTER_ENABLED + EAS_TRUE, +#else + EAS_FALSE, +#endif + _BUILD_TIME_, + _BUILD_VERSION_ +}; + +/* local prototypes */ +static EAS_RESULT EAS_ParseEvents (S_EAS_DATA *pEASData, S_EAS_STREAM *pStream, EAS_U32 endTime, EAS_INT parseMode); + +/*---------------------------------------------------------------------------- + * EAS_SetStreamParameter + *---------------------------------------------------------------------------- + * Sets the specified parameter in the stream. Allows access to + * customizable settings within the individual file parsers. + *---------------------------------------------------------------------------- + * pEASData - pointer to EAS persistent data object + * pStream - stream handle + * param - enumerated parameter (see eas_parser.h) + * value - new value + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_SetStreamParameter (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_I32 param, EAS_I32 value) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule->pfSetData) + return (*pParserModule->pfSetData)(pEASData, pStream->handle, param, value); + return EAS_ERROR_FEATURE_NOT_AVAILABLE; +} + +/*---------------------------------------------------------------------------- + * EAS_GetStreamParameter + *---------------------------------------------------------------------------- + * Sets the specified parameter in the stream. Allows access to + * customizable settings within the individual file parsers. + *---------------------------------------------------------------------------- + * pEASData - pointer to EAS persistent data object + * pStream - stream handle + * param - enumerated parameter (see eas_parser.h) + * pValue - pointer to variable to receive current setting + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_GetStreamParameter (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_I32 param, EAS_I32 *pValue) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule->pfGetData) + return (*pParserModule->pfGetData)(pEASData, pStream->handle, param, pValue); + return EAS_ERROR_FEATURE_NOT_AVAILABLE; +} + +/*---------------------------------------------------------------------------- + * EAS_StreamReady() + *---------------------------------------------------------------------------- + * This routine sets common parameters like transpose, volume, etc. + * First, it attempts to use the parser EAS_SetStreamParameter interface. If that + * fails, it attempts to get the synth handle from the parser and + * set the parameter directly on the synth. This eliminates duplicate + * code in the parser. + *---------------------------------------------------------------------------- +*/ +EAS_BOOL EAS_StreamReady (S_EAS_DATA *pEASData, EAS_HANDLE pStream) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_STATE state; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule->pfState(pEASData, pStream->handle, &state) != EAS_SUCCESS) + return EAS_FALSE; + return (state < EAS_STATE_OPEN); +} + +/*---------------------------------------------------------------------------- + * EAS_IntSetStrmParam() + *---------------------------------------------------------------------------- + * This routine sets common parameters like transpose, volume, etc. + * First, it attempts to use the parser EAS_SetStreamParameter interface. If that + * fails, it attempts to get the synth handle from the parser and + * set the parameter directly on the synth. This eliminates duplicate + * code in the parser. + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_IntSetStrmParam (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_INT param, EAS_I32 value) +{ + S_SYNTH *pSynth; + + /* try to set the parameter using stream interface */ + if (EAS_SetStreamParameter(pEASData, pStream, param, value) == EAS_SUCCESS) + return EAS_SUCCESS; + + /* get a pointer to the synth object and set it directly */ + /*lint -e{740} we are cheating by passing a pointer through this interface */ + if (EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_SYNTH_HANDLE, (EAS_I32*) &pSynth) != EAS_SUCCESS) + return EAS_ERROR_INVALID_PARAMETER; + + if (pSynth == NULL) + return EAS_ERROR_INVALID_PARAMETER; + + switch (param) + { + +#ifdef DLS_SYNTHESIZER + case PARSER_DATA_DLS_COLLECTION: + { + EAS_RESULT result = VMSetDLSLib(pSynth, (EAS_DLSLIB_HANDLE) value); + if (result == EAS_SUCCESS) + { + DLSAddRef((S_DLS*) value); + VMInitializeAllChannels(pEASData->pVoiceMgr, pSynth); + } + return result; + } +#endif + + case PARSER_DATA_EAS_LIBRARY: + return VMSetEASLib(pSynth, (EAS_SNDLIB_HANDLE) value); + + case PARSER_DATA_POLYPHONY: + return VMSetPolyphony(pEASData->pVoiceMgr, pSynth, value); + + case PARSER_DATA_PRIORITY: + return VMSetPriority(pEASData->pVoiceMgr, pSynth, value); + + case PARSER_DATA_TRANSPOSITION: + VMSetTranposition(pSynth, value); + break; + + case PARSER_DATA_VOLUME: + VMSetVolume(pSynth, (EAS_U16) value); + break; + + default: + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Invalid paramter %d in call to EAS_IntSetStrmParam", param); */ } + return EAS_ERROR_INVALID_PARAMETER; + } + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_IntGetStrmParam() + *---------------------------------------------------------------------------- + * This routine gets common parameters like transpose, volume, etc. + * First, it attempts to use the parser EAS_GetStreamParameter interface. If that + * fails, it attempts to get the synth handle from the parser and + * get the parameter directly on the synth. + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_IntGetStrmParam (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_INT param, EAS_I32 *pValue) +{ + S_SYNTH *pSynth; + + /* try to set the parameter */ + if (EAS_GetStreamParameter(pEASData, pStream, param, pValue) == EAS_SUCCESS) + return EAS_SUCCESS; + + /* get a pointer to the synth object and retrieve data directly */ + /*lint -e{740} we are cheating by passing a pointer through this interface */ + if (EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_SYNTH_HANDLE, (EAS_I32*) &pSynth) != EAS_SUCCESS) + return EAS_ERROR_INVALID_PARAMETER; + + if (pSynth == NULL) + return EAS_ERROR_INVALID_PARAMETER; + + switch (param) + { + case PARSER_DATA_POLYPHONY: + return VMGetPolyphony(pEASData->pVoiceMgr, pSynth, pValue); + + case PARSER_DATA_PRIORITY: + return VMGetPriority(pEASData->pVoiceMgr, pSynth, pValue); + + case PARSER_DATA_TRANSPOSITION: + VMGetTranposition(pSynth, pValue); + break; + + case PARSER_DATA_NOTE_COUNT: + *pValue = VMGetNoteCount(pSynth); + break; + + default: + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Invalid paramter %d in call to EAS_IntSetStrmParam", param); */ } + return EAS_ERROR_INVALID_PARAMETER; + } + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_AllocateStream() + *---------------------------------------------------------------------------- + * Purpose: + * Allocates a stream handle + * + * Inputs: + * + * Outputs: + * + *---------------------------------------------------------------------------- +*/ +static EAS_INT EAS_AllocateStream (EAS_DATA_HANDLE pEASData) +{ + EAS_INT streamNum; + + /* check for static allocation, only one stream allowed */ + if (pEASData->staticMemoryModel) + { + if (pEASData->streams[0].handle != NULL) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Attempt to open multiple streams in static model\n"); */ } + return -1; + } + return 0; + } + + /* dynamic model */ + for (streamNum = 0; streamNum < MAX_NUMBER_STREAMS; streamNum++) + if (pEASData->streams[streamNum].handle == NULL) + break; + if (streamNum == MAX_NUMBER_STREAMS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Exceeded maximum number of open streams\n"); */ } + return -1; + } + return streamNum; +} + +/*---------------------------------------------------------------------------- + * EAS_InitStream() + *---------------------------------------------------------------------------- + * Purpose: + * Initialize a stream + * + * Inputs: + * + * Outputs: + * + *---------------------------------------------------------------------------- +*/ +static void EAS_InitStream (S_EAS_STREAM *pStream, EAS_VOID_PTR pParserModule, EAS_VOID_PTR streamHandle) +{ + pStream->pParserModule = pParserModule; + pStream->handle = streamHandle; + pStream->time = 0; + pStream->frameLength = AUDIO_FRAME_LENGTH; + pStream->repeatCount = 0; + pStream->volume = DEFAULT_STREAM_VOLUME; + pStream->streamFlags = 0; +} + +/*---------------------------------------------------------------------------- + * EAS_Config() + *---------------------------------------------------------------------------- + * Purpose: + * Returns a pointer to a structure containing the configuration options + * in this library build. + * + * Inputs: + * + * Outputs: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC const S_EAS_LIB_CONFIG *EAS_Config (void) +{ + return &easLibConfig; +} + +/*---------------------------------------------------------------------------- + * EAS_Init() + *---------------------------------------------------------------------------- + * Purpose: + * Initialize the synthesizer library + * + * Inputs: + * ppEASData - pointer to data handle variable for this instance + * + * Outputs: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Init (EAS_DATA_HANDLE *ppEASData) +{ + EAS_HW_DATA_HANDLE pHWInstData; + EAS_RESULT result; + S_EAS_DATA *pEASData; + EAS_INT module; + EAS_BOOL staticMemoryModel; + + /* get the memory model */ + staticMemoryModel = EAS_CMStaticMemoryModel(); + + /* initialize the host wrapper interface */ + *ppEASData = NULL; + if ((result = EAS_HWInit(&pHWInstData)) != EAS_SUCCESS) + return result; + + /* check Configuration Module for S_EAS_DATA allocation */ + if (staticMemoryModel) + pEASData = EAS_CMEnumData(EAS_CM_EAS_DATA); + else + pEASData = EAS_HWMalloc(pHWInstData, sizeof(S_EAS_DATA)); + if (!pEASData) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_FATAL, "Failed to allocate EAS library memory\n"); */ } + return EAS_ERROR_MALLOC_FAILED; + } + + /* initialize some data */ + EAS_HWMemSet(pEASData, 0, sizeof(S_EAS_DATA)); + pEASData->staticMemoryModel = (EAS_BOOL8) staticMemoryModel; + pEASData->hwInstData = pHWInstData; + pEASData->renderTime = 0; + + /* set header search flag */ +#ifdef FILE_HEADER_SEARCH + pEASData->searchHeaderFlag = EAS_TRUE; +#endif + + /* initalize parameters */ + EAS_SetVolume(pEASData, NULL, DEFAULT_VOLUME); + +#ifdef _METRICS_ENABLED + /* initalize the metrics module */ + pEASData->pMetricsModule = EAS_CMEnumOptModules(EAS_MODULE_METRICS); + if (pEASData->pMetricsModule != NULL) + { + if ((result = (*pEASData->pMetricsModule->pfInit)(pEASData, &pEASData->pMetricsData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld initializing metrics module\n", result); */ } + return result; + } + } +#endif + + /* initailize the voice manager & synthesizer */ + if ((result = VMInitialize(pEASData)) != EAS_SUCCESS) + return result; + + /* initialize mix engine */ + if ((result = EAS_MixEngineInit(pEASData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld starting up mix engine\n", result); */ } + return result; + } + + /* initialize effects modules */ + for (module = 0; module < NUM_EFFECTS_MODULES; module++) + { + pEASData->effectsModules[module].effect = EAS_CMEnumFXModules(module); + if (pEASData->effectsModules[module].effect != NULL) + { + if ((result = (*pEASData->effectsModules[module].effect->pfInit)(pEASData, &pEASData->effectsModules[module].effectData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_FATAL, "Initialization of effects module %d returned %d\n", module, result); */ } + return result; + } + } + } + + /* initialize PCM engine */ + if ((result = EAS_PEInit(pEASData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_FATAL, "EAS_PEInit failed with error code %ld\n", result); */ } + return result; + } + + /* return instance data pointer to host */ + *ppEASData = pEASData; + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_Shutdown() + *---------------------------------------------------------------------------- + * Purpose: + * Shuts down the library. Deallocates any memory associated with the + * synthesizer (dynamic memory model only) + * + * Inputs: + * pEASData - handle to data for this instance + * + * Outputs: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Shutdown (EAS_DATA_HANDLE pEASData) +{ + EAS_HW_DATA_HANDLE hwInstData; + EAS_RESULT result, reportResult; + EAS_INT i; + + /* establish pointers */ + hwInstData = pEASData->hwInstData; + + /* check for NULL handle */ + if (!pEASData) + return EAS_ERROR_HANDLE_INTEGRITY; + + /* if there are streams open, close them */ + reportResult = EAS_SUCCESS; + for (i = 0; i < MAX_NUMBER_STREAMS; i++) + { + if (pEASData->streams[i].pParserModule && pEASData->streams[i].handle) + { + if ((result = (*((S_FILE_PARSER_INTERFACE*)(pEASData->streams[i].pParserModule))->pfClose)(pEASData, pEASData->streams[i].handle)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld shutting down parser module\n", result); */ } + reportResult = result; + } + } + } + + /* shutdown PCM engine */ + if ((result = EAS_PEShutdown(pEASData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld shutting down PCM engine\n", result); */ } + if (reportResult == EAS_SUCCESS) + reportResult = result; + } + + /* shutdown mix engine */ + if ((result = EAS_MixEngineShutdown(pEASData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld shutting down mix engine\n", result); */ } + if (reportResult == EAS_SUCCESS) + reportResult = result; + } + + /* shutdown effects modules */ + for (i = 0; i < NUM_EFFECTS_MODULES; i++) + { + if (pEASData->effectsModules[i].effect) + { + if ((result = (*pEASData->effectsModules[i].effect->pfShutdown)(pEASData, pEASData->effectsModules[i].effectData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_FATAL, "Shutdown of effects module %d returned %d\n", i, result); */ } + if (reportResult == EAS_SUCCESS) + reportResult = result; + } + } + } + + /* shutdown the voice manager & synthesizer */ + VMShutdown(pEASData); + +#ifdef _METRICS_ENABLED + /* shutdown the metrics module */ + if (pEASData->pMetricsModule != NULL) + { + if ((result = (*pEASData->pMetricsModule->pfShutdown)(pEASData, pEASData->pMetricsData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld shutting down metrics module\n", result); */ } + if (reportResult == EAS_SUCCESS) + reportResult = result; + } + } +#endif + + /* release allocated memory */ + if (!pEASData->staticMemoryModel) + EAS_HWFree(hwInstData, pEASData); + + /* shutdown host wrappers */ + if (hwInstData) + { + if ((result = EAS_HWShutdown(hwInstData)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error %ld shutting down host wrappers\n", result); */ } + if (reportResult == EAS_SUCCESS) + reportResult = result; + } + } + + return reportResult; +} + +#ifdef JET_INTERFACE +/*---------------------------------------------------------------------------- + * EAS_OpenJETStream() + *---------------------------------------------------------------------------- + * Private interface for JET to open an SMF stream with an offset + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_OpenJETStream (EAS_DATA_HANDLE pEASData, EAS_FILE_HANDLE fileHandle, EAS_I32 offset, EAS_HANDLE *ppStream) +{ + EAS_RESULT result; + EAS_VOID_PTR streamHandle; + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_INT streamNum; + + /* allocate a stream */ + if ((streamNum = EAS_AllocateStream(pEASData)) < 0) + return EAS_ERROR_MAX_STREAMS_OPEN; + + /* check Configuration Module for SMF parser */ + *ppStream = NULL; + streamHandle = NULL; + pParserModule = (S_FILE_PARSER_INTERFACE *) EAS_CMEnumModules(0); + if (pParserModule == NULL) + return EAS_ERROR_UNRECOGNIZED_FORMAT; + + /* see if SMF parser recognizes the file */ + if ((result = (*pParserModule->pfCheckFileType)(pEASData, fileHandle, &streamHandle, offset)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "CheckFileType returned error %ld\n", result); */ } + return result; + } + + /* parser recognized the file, return the handle */ + if (streamHandle) + { + EAS_InitStream(&pEASData->streams[streamNum], pParserModule, streamHandle); + *ppStream = &pEASData->streams[streamNum]; + return EAS_SUCCESS; + } + + return EAS_ERROR_UNRECOGNIZED_FORMAT; +} +#endif + +/*---------------------------------------------------------------------------- + * EAS_OpenFile() + *---------------------------------------------------------------------------- + * Purpose: + * Opens a file for audio playback. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * pHandle - pointer to file handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +extern int *EAS_HWGetMemFailVar(EAS_FILE_HANDLE); + +EAS_PUBLIC EAS_RESULT EAS_OpenFile (EAS_DATA_HANDLE pEASData, EAS_FILE_LOCATOR locator, EAS_HANDLE *ppStream, int **memfailvar) +{ + EAS_RESULT result; + EAS_FILE_HANDLE fileHandle; + EAS_VOID_PTR streamHandle; + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_INT streamNum; + EAS_INT moduleNum; + + /* open the file */ + if ((result = EAS_HWOpenFile(pEASData->hwInstData, locator, &fileHandle, EAS_FILE_READ)) != EAS_SUCCESS) + return result; + + /* allocate a stream */ + if ((streamNum = EAS_AllocateStream(pEASData)) < 0) + return EAS_ERROR_MAX_STREAMS_OPEN; + + /* check Configuration Module for file parsers */ + pParserModule = NULL; + *ppStream = NULL; + streamHandle = NULL; + for (moduleNum = 0; ; moduleNum++) + { + pParserModule = (S_FILE_PARSER_INTERFACE *) EAS_CMEnumModules(moduleNum); + if (pParserModule == NULL) + break; + + /* see if this parser recognizes it */ + if ((result = (*pParserModule->pfCheckFileType)(pEASData, fileHandle, &streamHandle, 0L)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "CheckFileType returned error %ld\n", result); */ } + return result; + } + + /* parser recognized the file, return the handle */ + if (streamHandle) + { + + /* save the parser pointer and file handle */ + EAS_InitStream(&pEASData->streams[streamNum], pParserModule, streamHandle); + *ppStream = &pEASData->streams[streamNum]; + if (memfailvar) + { + *memfailvar = EAS_HWGetMemFailVar(fileHandle); + } + return EAS_SUCCESS; + } + + /* rewind the file for the next parser */ + if ((result = EAS_HWFileSeek(pEASData->hwInstData, fileHandle, 0L)) != EAS_SUCCESS) + return result; + } + + /* no parser was able to recognize the file, close it and return an error */ + EAS_HWCloseFile(pEASData->hwInstData, fileHandle); + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "No parser recognized the requested file\n"); */ } + return EAS_ERROR_UNRECOGNIZED_FORMAT; +} + +#ifdef MMAPI_SUPPORT +/*---------------------------------------------------------------------------- + * EAS_MMAPIToneControl() + *---------------------------------------------------------------------------- + * Purpose: + * Opens a ToneControl file for audio playback. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * pHandle - pointer to file handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_MMAPIToneControl (EAS_DATA_HANDLE pEASData, EAS_FILE_LOCATOR locator, EAS_HANDLE *ppStream) +{ + EAS_RESULT result; + EAS_FILE_HANDLE fileHandle; + EAS_VOID_PTR streamHandle; + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_INT streamNum; + + /* check if the tone control parser is available */ + *ppStream = NULL; + streamHandle = NULL; + pParserModule = EAS_CMEnumOptModules(EAS_MODULE_MMAPI_TONE_CONTROL); + if (pParserModule == NULL) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_MMAPIToneControl: ToneControl parser not available\n"); */ } + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + } + + /* open the file */ + if ((result = EAS_HWOpenFile(pEASData->hwInstData, locator, &fileHandle, EAS_FILE_READ)) != EAS_SUCCESS) + return result; + + /* allocate a stream */ + if ((streamNum = EAS_AllocateStream(pEASData)) < 0) + return EAS_ERROR_MAX_STREAMS_OPEN; + + /* see if ToneControl parser recognizes it */ + if ((result = (*pParserModule->pfCheckFileType)(pEASData, fileHandle, &streamHandle, 0L)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "CheckFileType returned error %ld\n", result); */ } + return result; + } + + /* parser accepted the file, return the handle */ + if (streamHandle) + { + + /* save the parser pointer and file handle */ + EAS_InitStream(&pEASData->streams[streamNum], pParserModule, streamHandle); + *ppStream = &pEASData->streams[streamNum]; + return EAS_SUCCESS; + } + + /* parser did not recognize the file, close it and return an error */ + EAS_HWCloseFile(pEASData->hwInstData, fileHandle); + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_WARNING, "No parser recognized the requested file\n"); */ } + return EAS_ERROR_UNRECOGNIZED_FORMAT; +} + +/*---------------------------------------------------------------------------- + * EAS_GetWaveFmtChunk + *---------------------------------------------------------------------------- + * Helper function to retrieve WAVE file fmt chunk for MMAPI + *---------------------------------------------------------------------------- + * pEASData - pointer to EAS persistent data object + * pStream - stream handle + * pFmtChunk - pointer to variable to receive current setting + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetWaveFmtChunk (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_VOID_PTR *ppFmtChunk) +{ + EAS_RESULT result; + EAS_I32 value; + + if ((result = EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_FORMAT, &value)) != EAS_SUCCESS) + return result; + *ppFmtChunk = (EAS_VOID_PTR) value; + return EAS_SUCCESS; +} +#endif + +/*---------------------------------------------------------------------------- + * EAS_GetFileType + *---------------------------------------------------------------------------- + * Returns the file type (see eas_types.h for enumerations) + *---------------------------------------------------------------------------- + * pEASData - pointer to EAS persistent data object + * pStream - stream handle + * pFileType - pointer to variable to receive file type + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetFileType (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_I32 *pFileType) +{ + if (!EAS_StreamReady (pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_FILE_TYPE, pFileType); +} + +/*---------------------------------------------------------------------------- + * EAS_Prepare() + *---------------------------------------------------------------------------- + * Purpose: + * Prepares the synthesizer to play the file or stream. Parses the first + * frame of data from the file and arms the synthesizer. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Prepare (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_STATE state; + EAS_RESULT result; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + /* check for valid state */ + result = pParserModule->pfState(pEASData, pStream->handle, &state); + if (result == EAS_SUCCESS) + { + /* prepare the stream */ + if (state == EAS_STATE_OPEN) + { + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + result = (*pParserModule->pfPrepare)(pEASData, pStream->handle); + + /* set volume */ + if (result == EAS_SUCCESS) + result = EAS_SetVolume(pEASData, pStream, pStream->volume); + } + else + result = EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + } + + return result; +} + +/*---------------------------------------------------------------------------- + * EAS_Render() + *---------------------------------------------------------------------------- + * Purpose: + * Parse the Midi data and render PCM audio data. + * + * Inputs: + * pEASData - buffer for internal EAS data + * pOut - output buffer pointer + * nNumRequested - requested num samples to generate + * pnNumGenerated - actual number of samples generated + * + * Outputs: + * EAS_SUCCESS if PCM data was successfully rendered + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Render (EAS_DATA_HANDLE pEASData, EAS_PCM *pOut, EAS_I32 numRequested, EAS_I32 *pNumGenerated) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + EAS_I32 voicesRendered; + EAS_STATE parserState; + EAS_INT streamNum; + + /* assume no samples generated and reset workload */ + *pNumGenerated = 0; + VMInitWorkload(pEASData->pVoiceMgr); + + /* no support for other buffer sizes yet */ + if (numRequested != BUFFER_SIZE_IN_MONO_SAMPLES) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "This library supports only %ld samples in buffer, host requested %ld samples\n", + (EAS_I32) BUFFER_SIZE_IN_MONO_SAMPLES, numRequested); */ } + return EAS_BUFFER_SIZE_MISMATCH; + } + +#ifdef _METRICS_ENABLED + /* start performance counter */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_TOTAL_TIME); +#endif + + /* prep the frame buffer, do mix engine prep only if TRUE */ +#ifdef _SPLIT_ARCHITECTURE + if (VMStartFrame(pEASData)) + EAS_MixEnginePrep(pEASData, numRequested); +#else + /* prep the mix engine */ + EAS_MixEnginePrep(pEASData, numRequested); +#endif + + /* save the output buffer pointer */ + pEASData->pOutputAudioBuffer = pOut; + + +#ifdef _METRICS_ENABLED + /* start performance counter */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_PARSE_TIME); +#endif + + /* if we haven't finished parsing from last time, do it now */ + /* need to parse another frame of events before we render again */ + for (streamNum = 0; streamNum < MAX_NUMBER_STREAMS; streamNum++) + { + /* clear the locate flag */ + pEASData->streams[streamNum].streamFlags &= ~STREAM_FLAGS_LOCATE; + + if (pEASData->streams[streamNum].pParserModule) + { + + /* establish pointer to parser module */ + pParserModule = pEASData->streams[streamNum].pParserModule; + + /* handle pause */ + if (pEASData->streams[streamNum].streamFlags & STREAM_FLAGS_PAUSE) + { + if (pParserModule->pfPause) + result = pParserModule->pfPause(pEASData, pEASData->streams[streamNum].handle); + pEASData->streams[streamNum].streamFlags &= ~STREAM_FLAGS_PAUSE; + } + + /* get current state */ + if ((result = (*pParserModule->pfState)(pEASData, pEASData->streams[streamNum].handle, &parserState)) != EAS_SUCCESS) + return result; + + /* handle resume */ + if (parserState == EAS_STATE_PAUSED) + { + if (pEASData->streams[streamNum].streamFlags & STREAM_FLAGS_RESUME) + { + if (pParserModule->pfResume) + result = pParserModule->pfResume(pEASData, pEASData->streams[streamNum].handle); + pEASData->streams[streamNum].streamFlags &= ~STREAM_FLAGS_RESUME; + } + } + + /* if necessary, parse stream */ + if ((pEASData->streams[streamNum].streamFlags & STREAM_FLAGS_PARSED) == 0) + if ((result = EAS_ParseEvents(pEASData, &pEASData->streams[streamNum], pEASData->streams[streamNum].time + pEASData->streams[streamNum].frameLength, eParserModePlay)) != EAS_SUCCESS) + return result; + + /* check for an early abort */ + if ((pEASData->streams[streamNum].streamFlags) == 0) + { + +#ifdef _METRICS_ENABLED + /* stop performance counter */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_TOTAL_TIME); +#endif + + return EAS_SUCCESS; + } + + /* check for repeat */ + if (pEASData->streams[streamNum].repeatCount) + { + + /* check for stopped state */ + if ((result = (*pParserModule->pfState)(pEASData, pEASData->streams[streamNum].handle, &parserState)) != EAS_SUCCESS) + return result; + if (parserState == EAS_STATE_STOPPED) + { + + /* decrement repeat count, unless it is negative */ + if (pEASData->streams[streamNum].repeatCount > 0) + pEASData->streams[streamNum].repeatCount--; + + /* reset the parser */ + if ((result = (*pParserModule->pfReset)(pEASData, pEASData->streams[streamNum].handle)) != EAS_SUCCESS) + return result; + pEASData->streams[streamNum].time = 0; + } + } + } + } + +#ifdef _METRICS_ENABLED + /* stop performance counter */ + if (pEASData->pMetricsData) + (void)(*pEASData->pMetricsModule->pfStopTimer)(pEASData->pMetricsData, EAS_PM_PARSE_TIME); +#endif + +#ifdef _METRICS_ENABLED + /* start the render timer */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_RENDER_TIME); +#endif + + /* render audio */ + if ((result = VMRender(pEASData->pVoiceMgr, BUFFER_SIZE_IN_MONO_SAMPLES, pEASData->pMixBuffer, &voicesRendered)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "pfRender function returned error %ld\n", result); */ } + return result; + } + +#ifdef _METRICS_ENABLED + /* stop the render timer */ + if (pEASData->pMetricsData) { + (*pEASData->pMetricsModule->pfIncrementCounter)(pEASData->pMetricsData, EAS_PM_FRAME_COUNT, 1); + (void)(*pEASData->pMetricsModule->pfStopTimer)(pEASData->pMetricsData, EAS_PM_RENDER_TIME); + (*pEASData->pMetricsModule->pfIncrementCounter)(pEASData->pMetricsData, EAS_PM_TOTAL_VOICE_COUNT, (EAS_U32) voicesRendered); + (void)(*pEASData->pMetricsModule->pfRecordMaxValue)(pEASData->pMetricsData, EAS_PM_MAX_VOICES, (EAS_U32) voicesRendered); + } +#endif + + //2 Do we really need frameParsed? + /* need to parse another frame of events before we render again */ + for (streamNum = 0; streamNum < MAX_NUMBER_STREAMS; streamNum++) + if (pEASData->streams[streamNum].pParserModule != NULL) + pEASData->streams[streamNum].streamFlags &= ~STREAM_FLAGS_PARSED; + +#ifdef _METRICS_ENABLED + /* start performance counter */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_STREAM_TIME); +#endif + + /* render PCM audio */ + if ((result = EAS_PERender(pEASData, numRequested)) != EAS_SUCCESS) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_PERender returned error %ld\n", result); */ } + return result; + } + +#ifdef _METRICS_ENABLED + /* stop the stream timer */ + if (pEASData->pMetricsData) + (void)(*pEASData->pMetricsModule->pfStopTimer)(pEASData->pMetricsData, EAS_PM_STREAM_TIME); +#endif + +#ifdef _METRICS_ENABLED + /* start the post timer */ + if (pEASData->pMetricsData) + (*pEASData->pMetricsModule->pfStartTimer)(pEASData->pMetricsData, EAS_PM_POST_TIME); +#endif + + /* for split architecture, send DSP vectors. Do post only if return is TRUE */ +#ifdef _SPLIT_ARCHITECTURE + if (VMEndFrame(pEASData)) + { + /* now do post-processing */ + EAS_MixEnginePost(pEASData, numRequested); + *pNumGenerated = numRequested; + } +#else + /* now do post-processing */ + EAS_MixEnginePost(pEASData, numRequested); + *pNumGenerated = numRequested; +#endif + +#ifdef _METRICS_ENABLED + /* stop the post timer */ + if (pEASData->pMetricsData) + (void)(*pEASData->pMetricsModule->pfStopTimer)(pEASData->pMetricsData, EAS_PM_POST_TIME); +#endif + + /* advance render time */ + pEASData->renderTime += AUDIO_FRAME_LENGTH; + +#if 0 + /* dump workload for debug */ + if (pEASData->pVoiceMgr->workload) + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Workload = %d\n", pEASData->pVoiceMgr->workload); */ } +#endif + +#ifdef _METRICS_ENABLED + /* stop performance counter */ + if (pEASData->pMetricsData) + { + PERF_TIMER temp; + temp = (*pEASData->pMetricsModule->pfStopTimer)(pEASData->pMetricsData, EAS_PM_TOTAL_TIME); + + /* if max render time, record the number of voices and time */ + if ((*pEASData->pMetricsModule->pfRecordMaxValue) + (pEASData->pMetricsData, EAS_PM_MAX_CYCLES, (EAS_U32) temp)) + { + (*pEASData->pMetricsModule->pfRecordValue)(pEASData->pMetricsData, EAS_PM_MAX_CYCLES_VOICES, (EAS_U32) voicesRendered); + (*pEASData->pMetricsModule->pfRecordValue)(pEASData->pMetricsData, EAS_PM_MAX_CYCLES_TIME, (EAS_I32) (pEASData->renderTime >> 8)); + } + } +#endif + +#ifdef JET_INTERFACE + /* let JET to do its thing */ + if (pEASData->jetHandle != NULL) + { + result = JET_Process(pEASData); + if (result != EAS_SUCCESS) + return result; + } +#endif + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetRepeat() + *---------------------------------------------------------------------------- + * Purpose: + * Set the selected stream to repeat. + * + * Inputs: + * pEASData - handle to data for this instance + * handle - handle to stream + * repeatCount - repeat count + * + * Outputs: + * + * Side Effects: + * + * Notes: + * 0 = no repeat + * 1 = repeat once, i.e. play through twice + * -1 = repeat forever + *---------------------------------------------------------------------------- +*/ +/*lint -esym(715, pEASData) reserved for future use */ +EAS_PUBLIC EAS_RESULT EAS_SetRepeat (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 repeatCount) +{ + pStream->repeatCount = repeatCount; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_GetRepeat() + *---------------------------------------------------------------------------- + * Purpose: + * Gets the current repeat count for the selected stream. + * + * Inputs: + * pEASData - handle to data for this instance + * handle - handle to stream + * pRrepeatCount - pointer to variable to hold repeat count + * + * Outputs: + * + * Side Effects: + * + * Notes: + * 0 = no repeat + * 1 = repeat once, i.e. play through twice + * -1 = repeat forever + *---------------------------------------------------------------------------- +*/ +/*lint -esym(715, pEASData) reserved for future use */ +EAS_PUBLIC EAS_RESULT EAS_GetRepeat (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *pRepeatCount) +{ + *pRepeatCount = pStream->repeatCount; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetPlaybackRate() + *---------------------------------------------------------------------------- + * Purpose: + * Sets the playback rate. + * + * Inputs: + * pEASData - handle to data for this instance + * handle - handle to stream + * rate - rate (28-bit fractional amount) + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +/*lint -esym(715, pEASData) reserved for future use */ +EAS_PUBLIC EAS_RESULT EAS_SetPlaybackRate (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_U32 rate) +{ + + /* check range */ + if ((rate < (1 << 27)) || (rate > (1 << 29))) + return EAS_ERROR_INVALID_PARAMETER; + + /* calculate new frame length + * + * NOTE: The maximum frame length we can accomodate based on a + * maximum rate of 2.0 (2^28) is 2047 (2^13-1). To accomodate a + * longer frame length or a higher maximum rate, the fixed point + * divide below will need to be adjusted + */ + pStream->frameLength = (AUDIO_FRAME_LENGTH * (rate >> 8)) >> 20; + + /* notify stream of new playback rate */ + EAS_SetStreamParameter(pEASData, pStream, PARSER_DATA_PLAYBACK_RATE, (EAS_I32) rate); + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetTransposition) + *---------------------------------------------------------------------------- + * Purpose: + * Sets the key tranposition for the synthesizer. Transposes all + * melodic instruments by the specified amount. Range is limited + * to +/-12 semitones. + * + * Inputs: + * pEASData - handle to data for this instance + * handle - handle to stream + * transposition - +/-12 semitones + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetTransposition (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 transposition) +{ + + /* check range */ + if ((transposition < -12) || (transposition > 12)) + return EAS_ERROR_INVALID_PARAMETER; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_TRANSPOSITION, transposition); +} + +/*---------------------------------------------------------------------------- + * EAS_ParseEvents() + *---------------------------------------------------------------------------- + * Purpose: + * Parse events in the current streams until the desired time is reached. + * + * Inputs: + * pEASData - buffer for internal EAS data + * endTime - stop parsing if this time is reached + * parseMode - play, locate, or metadata + * + * Outputs: + * EAS_SUCCESS if PCM data was successfully rendered + * + *---------------------------------------------------------------------------- +*/ +static EAS_RESULT EAS_ParseEvents (S_EAS_DATA *pEASData, EAS_HANDLE pStream, EAS_U32 endTime, EAS_INT parseMode) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + EAS_I32 parserState; + EAS_BOOL done; + EAS_INT yieldCount = YIELD_EVENT_COUNT; + EAS_U32 time = 0; + + /* does this parser have a time function? */ + pParserModule = pStream->pParserModule; + if (pParserModule->pfTime == NULL) + { + /* check state */ + if ((result = (*pParserModule->pfState)(pEASData, pStream->handle, &parserState)) != EAS_SUCCESS) + return result; + /* if play state, advance time */ + if ((parserState >= EAS_STATE_READY) && (parserState <= EAS_STATE_PAUSING)) + pStream->time += pStream->frameLength; + done = EAS_TRUE; + } + + /* assume we're not done, in case we abort out */ + else + { + pStream->streamFlags &= ~STREAM_FLAGS_PARSED; + done = EAS_FALSE; + } + + while (!done) + { + + /* check for stopped state */ + if ((result = (*pParserModule->pfState)(pEASData, pStream->handle, &parserState)) != EAS_SUCCESS) + return result; + if (parserState > EAS_STATE_PLAY) + { + /* save current time if we're not in play mode */ + if (parseMode != eParserModePlay) + pStream->time = time << 8; + done = EAS_TRUE; + break; + } + + /* get the next event time */ + if (pParserModule->pfTime) + { + if ((result = (*pParserModule->pfTime)(pEASData, pStream->handle, &time)) != EAS_SUCCESS) + return result; + + /* if next event is within this frame, parse it */ + if (time < (endTime >> 8)) + { + + /* parse the next event */ + if (pParserModule->pfEvent) + if ((result = (*pParserModule->pfEvent)(pEASData, pStream->handle, parseMode)) != EAS_SUCCESS) + return result; + } + + /* no more events in this frame, advance time */ + else + { + pStream->time = endTime; + done = EAS_TRUE; + } + } + + /* check for max workload exceeded */ + if (VMCheckWorkload(pEASData->pVoiceMgr)) + { + /* stop even though we may not have parsed + * all the events in this frame. The parser will try to + * catch up on the next frame. + */ + break; + } + + /* give host a chance for an early abort */ + if (--yieldCount == 0) + { + if (EAS_HWYield(pEASData->hwInstData)) + break; + yieldCount = YIELD_EVENT_COUNT; + } + } + + /* if no early abort, parsing is complete for this frame */ + if (done) + pStream->streamFlags |= STREAM_FLAGS_PARSED; + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_ParseMetaData() + *---------------------------------------------------------------------------- + * Purpose: + * + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * playLength - pointer to variable to store the play length (in msecs) + * + * Outputs: + * + * + * Side Effects: + * - resets the parser to the start of the file + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_ParseMetaData (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *playLength) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + EAS_STATE state; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + /* check parser state */ + if ((result = (*pParserModule->pfState)(pEASData, pStream->handle, &state)) != EAS_SUCCESS) + return result; + if (state >= EAS_STATE_OPEN) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* if parser has metadata function, use that */ + if (pParserModule->pfGetMetaData != NULL) + return pParserModule->pfGetMetaData(pEASData, pStream->handle, playLength); + + /* reset the parser to the beginning */ + if ((result = (*pParserModule->pfReset)(pEASData, pStream->handle)) != EAS_SUCCESS) + return result; + + /* parse the file to end */ + pStream->time = 0; + VMInitWorkload(pEASData->pVoiceMgr); + if ((result = EAS_ParseEvents(pEASData, pStream, 0x7fffffff, eParserModeMetaData)) != EAS_SUCCESS) + return result; + + /* get the parser time */ + if ((result = EAS_GetLocation(pEASData, pStream, playLength)) != EAS_SUCCESS) + return result; + + /* reset the parser to the beginning */ + pStream->time = 0; + return (*pParserModule->pfReset)(pEASData, pStream->handle); +} + +/*---------------------------------------------------------------------------- + * EAS_RegisterMetaDataCallback() + *---------------------------------------------------------------------------- + * Purpose: + * Registers a metadata callback function for parsed metadata. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * cbFunc - pointer to host callback function + * metaDataBuffer - pointer to metadata buffer + * metaDataBufSize - maximum size of the metadata buffer + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_RegisterMetaDataCallback ( + EAS_DATA_HANDLE pEASData, + EAS_HANDLE pStream, + EAS_METADATA_CBFUNC cbFunc, + char *metaDataBuffer, + EAS_I32 metaDataBufSize, + EAS_VOID_PTR pUserData) +{ + S_METADATA_CB metadata; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* register callback function */ + metadata.callback = cbFunc; + metadata.buffer = metaDataBuffer; + metadata.bufferSize = metaDataBufSize; + metadata.pUserData = pUserData; + return EAS_SetStreamParameter(pEASData, pStream, PARSER_DATA_METADATA_CB, (EAS_I32) &metadata); +} + +/*---------------------------------------------------------------------------- + * EAS_GetNoteCount () + *---------------------------------------------------------------------------- + * Returns the total number of notes played in this stream + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetNoteCount (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *pNoteCount) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntGetStrmParam(pEASData, pStream, PARSER_DATA_NOTE_COUNT, pNoteCount); +} + +/*---------------------------------------------------------------------------- + * EAS_CloseFile() + *---------------------------------------------------------------------------- + * Purpose: + * Closes an audio file or stream. Playback should have either paused or + * completed (EAS_State returns EAS_PAUSED or EAS_STOPPED). + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_CloseFile (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + + /* call the close function */ + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + result = (*pParserModule->pfClose)(pEASData, pStream->handle); + + /* clear the handle and parser interface pointer */ + pStream->handle = NULL; + pStream->pParserModule = NULL; + return result; +} + +/*---------------------------------------------------------------------------- + * EAS_OpenMIDIStream() + *---------------------------------------------------------------------------- + * Purpose: + * Opens a raw MIDI stream allowing the host to route MIDI cable data directly to the synthesizer + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * pHandle - pointer to variable to hold file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_OpenMIDIStream (EAS_DATA_HANDLE pEASData, EAS_HANDLE *ppStream, EAS_HANDLE streamHandle) +{ + EAS_RESULT result; + S_INTERACTIVE_MIDI *pMIDIStream; + EAS_INT streamNum; + + /* initialize some pointers */ + *ppStream = NULL; + + /* allocate a stream */ + if ((streamNum = EAS_AllocateStream(pEASData)) < 0) + return EAS_ERROR_MAX_STREAMS_OPEN; + + /* check Configuration Module for S_EAS_DATA allocation */ + if (pEASData->staticMemoryModel) + pMIDIStream = EAS_CMEnumData(EAS_CM_MIDI_STREAM_DATA); + else + pMIDIStream = EAS_HWMalloc(pEASData->hwInstData, sizeof(S_INTERACTIVE_MIDI)); + + /* allocate dynamic memory */ + if (!pMIDIStream) + { + { /* dpp: EAS_ReportEx(_EAS_SEVERITY_FATAL, "Failed to allocate MIDI stream data\n"); */ } + return EAS_ERROR_MALLOC_FAILED; + } + + /* zero the memory to insure complete initialization */ + EAS_HWMemSet(pMIDIStream, 0, sizeof(S_INTERACTIVE_MIDI)); + EAS_InitStream(&pEASData->streams[streamNum], NULL, pMIDIStream); + + /* instantiate a new synthesizer */ + if (streamHandle == NULL) + { + result = VMInitMIDI(pEASData, &pMIDIStream->pSynth); + } + + /* use an existing synthesizer */ + else + { + EAS_I32 value; + result = EAS_GetStreamParameter(pEASData, streamHandle, PARSER_DATA_SYNTH_HANDLE, &value); + pMIDIStream->pSynth = (S_SYNTH*) value; + VMIncRefCount(pMIDIStream->pSynth); + } + if (result != EAS_SUCCESS) + { + EAS_CloseMIDIStream(pEASData, &pEASData->streams[streamNum]); + return result; + } + + /* initialize the MIDI stream data */ + EAS_InitMIDIStream(&pMIDIStream->stream); + + *ppStream = (EAS_HANDLE) &pEASData->streams[streamNum]; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_WriteMIDIStream() + *---------------------------------------------------------------------------- + * Purpose: + * Send data to the MIDI stream device + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - stream handle + * pBuffer - pointer to buffer + * count - number of bytes to write + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_WriteMIDIStream (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_U8 *pBuffer, EAS_I32 count) +{ + S_INTERACTIVE_MIDI *pMIDIStream; + EAS_RESULT result; + + pMIDIStream = (S_INTERACTIVE_MIDI*) pStream->handle; + + if (count <= 0) + return EAS_ERROR_PARAMETER_RANGE; + + /* send the entire buffer */ + while (count--) + { + if ((result = EAS_ParseMIDIStream(pEASData, pMIDIStream->pSynth, &pMIDIStream->stream, *pBuffer++, eParserModePlay)) != EAS_SUCCESS) + return result; + } + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_CloseMIDIStream() + *---------------------------------------------------------------------------- + * Purpose: + * Closes a raw MIDI stream + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - stream handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_CloseMIDIStream (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + S_INTERACTIVE_MIDI *pMIDIStream; + + pMIDIStream = (S_INTERACTIVE_MIDI*) pStream->handle; + + /* close synth */ + if (pMIDIStream->pSynth != NULL) + { + VMMIDIShutdown(pEASData, pMIDIStream->pSynth); + pMIDIStream->pSynth = NULL; + } + + /* release allocated memory */ + if (!pEASData->staticMemoryModel) + EAS_HWFree(((S_EAS_DATA*) pEASData)->hwInstData, pMIDIStream); + + pStream->handle = NULL; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_State() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the state of an audio file or stream. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_State (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_STATE *pState) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + + /* call the parser to return state */ + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + if ((result = (*pParserModule->pfState)(pEASData, pStream->handle, pState)) != EAS_SUCCESS) + return result; + + /* if repeat count is set for this parser, mask the stopped state from the application */ + if (pStream->repeatCount && (*pState == EAS_STATE_STOPPED)) + *pState = EAS_STATE_PLAY; + + /* if we're not ready or playing, we don't need to hide state from host */ + if (*pState > EAS_STATE_PLAY) + return EAS_SUCCESS; + + /* if stream is about to be paused, report it as paused */ + if (pStream->streamFlags & STREAM_FLAGS_PAUSE) + { + if (pStream->streamFlags & STREAM_FLAGS_LOCATE) + *pState = EAS_STATE_PAUSED; + else + *pState = EAS_STATE_PAUSING; + } + + /* if stream is about to resume, report it as playing */ + if (pStream->streamFlags & STREAM_FLAGS_RESUME) + *pState = EAS_STATE_PLAY; + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetPolyphony() + *---------------------------------------------------------------------------- + * Purpose: + * Set the polyphony of the stream. A value of 0 allows the stream + * to use all voices (set by EAS_SetSynthPolyphony). + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * streamHandle - handle returned by EAS_OpenFile + * polyphonyCount - the desired polyphony count + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetPolyphony (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 polyphonyCount) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_POLYPHONY, polyphonyCount); +} + +/*---------------------------------------------------------------------------- + * EAS_GetPolyphony() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current polyphony setting of the stream + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * streamHandle - handle returned by EAS_OpenFile + * pPolyphonyCount - pointer to variable to receive polyphony count + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetPolyphony (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *pPolyphonyCount) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntGetStrmParam(pEASData, pStream, PARSER_DATA_POLYPHONY, pPolyphonyCount); +} + +/*---------------------------------------------------------------------------- + * EAS_SetSynthPolyphony() + *---------------------------------------------------------------------------- + * Purpose: + * Set the polyphony of the synth . Value must be >= 1 and <= the + * maximum number of voices. This function will pin the polyphony + * at those limits + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * synthNum - synthesizer number (0 = onboard, 1 = DSP) + * polyphonyCount - the desired polyphony count + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetSynthPolyphony (EAS_DATA_HANDLE pEASData, EAS_I32 synthNum, EAS_I32 polyphonyCount) +{ + return VMSetSynthPolyphony(pEASData->pVoiceMgr, synthNum, polyphonyCount); +} + +/*---------------------------------------------------------------------------- + * EAS_GetSynthPolyphony() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current polyphony setting of the synth + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * synthNum - synthesizer number (0 = onboard, 1 = DSP) + * pPolyphonyCount - pointer to variable to receive polyphony count + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetSynthPolyphony (EAS_DATA_HANDLE pEASData, EAS_I32 synthNum, EAS_I32 *pPolyphonyCount) +{ + return VMGetSynthPolyphony(pEASData->pVoiceMgr, synthNum, pPolyphonyCount); +} + +/*---------------------------------------------------------------------------- + * EAS_SetPriority() + *---------------------------------------------------------------------------- + * Purpose: + * Set the priority of the stream. Determines which stream's voices + * are stolen when there are insufficient voices for all notes. + * Value must be in the range of 1-15, lower values are higher + * priority. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * streamHandle - handle returned by EAS_OpenFile + * polyphonyCount - the desired polyphony count + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetPriority (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 priority) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_PRIORITY, priority); +} + +/*---------------------------------------------------------------------------- + * EAS_GetPriority() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current priority setting of the stream + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * streamHandle - handle returned by EAS_OpenFile + * pPriority - pointer to variable to receive priority + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetPriority (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *pPriority) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntGetStrmParam(pEASData, pStream, PARSER_DATA_PRIORITY, pPriority); +} + +/*---------------------------------------------------------------------------- + * EAS_SetVolume() + *---------------------------------------------------------------------------- + * Purpose: + * Set the master gain for the mix engine in 1dB increments + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * volume - the desired master gain (100 is max) + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * overrides any previously set master volume from sysex + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetVolume (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 volume) +{ + EAS_I16 gain; + + /* check range */ + if ((volume < 0) || (volume > EAS_MAX_VOLUME)) + return EAS_ERROR_PARAMETER_RANGE; + + /* stream volume */ + if (pStream != NULL) + { + EAS_I32 gainOffset; + EAS_RESULT result; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* get gain offset */ + pStream->volume = (EAS_U8) volume; + result = EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_GAIN_OFFSET, &gainOffset); + if (result == EAS_SUCCESS) + volume += gainOffset; + + /* set stream volume */ + gain = EAS_VolumeToGain(volume - STREAM_VOLUME_HEADROOM); + + /* convert to linear scalar */ + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_VOLUME, gain); + } + + /* master volume */ + pEASData->masterVolume = (EAS_U8) volume; +#if (NUM_OUTPUT_CHANNELS == 1) + /* leave 3dB headroom for mono output */ + volume -= 3; +#endif + + gain = EAS_VolumeToGain(volume - STREAM_VOLUME_HEADROOM); + pEASData->masterGain = gain; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_GetVolume() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the master volume for the synthesizer. The default volume setting is + * 50. The volume range is 0 to 100; + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * volume - the desired master volume + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * overrides any previously set master volume from sysex + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_I32 EAS_GetVolume (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + if (pStream == NULL) + return pEASData->masterVolume; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return pStream->volume; +} + +/*---------------------------------------------------------------------------- + * EAS_SetMaxLoad() + *---------------------------------------------------------------------------- + * Purpose: + * Sets the maximum workload the parsers will do in a single call to + * EAS_Render. The units are currently arbitrary, but should correlate + * well to the actual CPU cycles consumed. The primary effect is to + * reduce the occasional peaks in CPU cycles consumed when parsing + * dense parts of a MIDI score. + * + * Inputs: + * pEASData - handle to data for this instance + * maxLoad - the desired maximum workload + * + * Outputs: + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetMaxLoad (EAS_DATA_HANDLE pEASData, EAS_I32 maxLoad) +{ + VMSetWorkload(pEASData->pVoiceMgr, maxLoad); + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetMaxPCMStreams() + *---------------------------------------------------------------------------- + * Sets the maximum number of PCM streams allowed in parsers that + * use PCM streaming. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * streamHandle - handle returned by EAS_OpenFile + * maxNumStreams - maximum number of PCM streams + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetMaxPCMStreams (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 maxNumStreams) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_MAX_PCM_STREAMS, maxNumStreams); +} + +/*---------------------------------------------------------------------------- + * EAS_Locate() + *---------------------------------------------------------------------------- + * Purpose: + * Locate into the file associated with the handle. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file handle + * milliseconds - playback offset from start of file in milliseconds + * + * Outputs: + * + * + * Side Effects: + * the actual offset will be quantized to the closest update period, typically + * a resolution of 5.9ms. Notes that are started prior to this time will not + * sound. Any notes currently playing will be shut off. + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Locate (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 milliseconds, EAS_BOOL offset) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_RESULT result; + EAS_U32 requestedTime; + EAS_STATE state; + + /* get pointer to parser function table */ + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + if ((result = (*pParserModule->pfState)(pEASData, pStream->handle, &state)) != EAS_SUCCESS) + return result; + if (state >= EAS_STATE_OPEN) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* handle offset and limit to start of file */ + /*lint -e{704} use shift for performance*/ + if (offset) + milliseconds += (EAS_I32) pStream->time >> 8; + if (milliseconds < 0) + milliseconds = 0; + + /* check to see if the request is different from the current time */ + requestedTime = (EAS_U32) milliseconds; + if (requestedTime == (pStream->time >> 8)) + return EAS_SUCCESS; + + /* set the locate flag */ + pStream->streamFlags |= STREAM_FLAGS_LOCATE; + + /* use the parser locate function, if available */ + if (pParserModule->pfLocate != NULL) + { + EAS_BOOL parserLocate = EAS_FALSE; + result = pParserModule->pfLocate(pEASData, pStream->handle, (EAS_I32) requestedTime, &parserLocate); + if (!parserLocate) + { + if (result == EAS_SUCCESS) + pStream->time = requestedTime << 8; + return result; + } + } + + /* if we were paused and not going to resume, set pause request flag */ + if (((state == EAS_STATE_PAUSING) || (state == EAS_STATE_PAUSED)) && ((pStream->streamFlags & STREAM_FLAGS_RESUME) == 0)) + pStream->streamFlags |= STREAM_FLAGS_PAUSE; + + /* reset the synth and parser */ + if ((result = (*pParserModule->pfReset)(pEASData, pStream->handle)) != EAS_SUCCESS) + return result; + pStream->time = 0; + + /* locating forward, clear parsed flag and parse data until we get to the requested location */ + if ((result = EAS_ParseEvents(pEASData, pStream, requestedTime << 8, eParserModeLocate)) != EAS_SUCCESS) + return result; + + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_GetLocation() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current playback offset + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file handle + * + * Outputs: + * The offset in milliseconds from the start of the current sequence, quantized + * to the nearest update period. Actual resolution is typically 5.9 ms. + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +/*lint -esym(715, pEASData) reserved for future use */ +EAS_PUBLIC EAS_RESULT EAS_GetLocation (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 *pTime) +{ + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + *pTime = pStream->time >> 8; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_GetRenderTime() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current playback offset + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * + * Outputs: + * Gets the render time clock in msecs. + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetRenderTime (EAS_DATA_HANDLE pEASData, EAS_I32 *pTime) +{ + *pTime = pEASData->renderTime >> 8; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_Pause() + *---------------------------------------------------------------------------- + * Purpose: + * Pauses the playback of the data associated with this handle. The audio + * is gracefully ramped down to prevent clicks and pops. It may take several + * buffers of audio before the audio is muted. + * + * Inputs: + * psEASData - pointer to overall EAS data structure + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Pause (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_STATE state; + EAS_RESULT result; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + /* check for valid state */ + result = pParserModule->pfState(pEASData, pStream->handle, &state); + if (result == EAS_SUCCESS) + { + if ((state != EAS_STATE_PLAY) && (state != EAS_STATE_READY) && ((pStream->streamFlags & STREAM_FLAGS_RESUME) == 0)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* make sure parser implements pause */ + if (pParserModule->pfPause == NULL) + result = EAS_ERROR_NOT_IMPLEMENTED; + + /* clear resume flag */ + pStream->streamFlags &= ~STREAM_FLAGS_RESUME; + + /* set pause flag */ + pStream->streamFlags |= STREAM_FLAGS_PAUSE; + +#if 0 + /* pause the stream */ + if (pParserModule->pfPause) + result = pParserModule->pfPause(pEASData, pStream->handle); + else + result = EAS_ERROR_NOT_IMPLEMENTED; +#endif + } + + return result; +} + +/*---------------------------------------------------------------------------- + * EAS_Resume() + *---------------------------------------------------------------------------- + * Purpose: + * Resumes the playback of the data associated with this handle. The audio + * is gracefully ramped up to prevent clicks and pops. + * + * Inputs: + * psEASData - pointer to overall EAS data structure + * handle - file or stream handle + * + * Outputs: + * + * + * Side Effects: + * + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_Resume (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream) +{ + S_FILE_PARSER_INTERFACE *pParserModule; + EAS_STATE state; + EAS_RESULT result; + + pParserModule = (S_FILE_PARSER_INTERFACE*) pStream->pParserModule; + if (pParserModule == NULL) + return EAS_ERROR_FEATURE_NOT_AVAILABLE; + + /* check for valid state */ + result = pParserModule->pfState(pEASData, pStream->handle, &state); + if (result == EAS_SUCCESS) + { + if ((state != EAS_STATE_PAUSED) && (state != EAS_STATE_PAUSING) && ((pStream->streamFlags & STREAM_FLAGS_PAUSE) == 0)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + /* make sure parser implements this function */ + if (pParserModule->pfResume == NULL) + result = EAS_ERROR_NOT_IMPLEMENTED; + + /* clear pause flag */ + pStream->streamFlags &= ~STREAM_FLAGS_PAUSE; + + /* set resume flag */ + pStream->streamFlags |= STREAM_FLAGS_RESUME; + +#if 0 + /* resume the stream */ + if (pParserModule->pfResume) + result = pParserModule->pfResume(pEASData, pStream->handle); + else + result = EAS_ERROR_NOT_IMPLEMENTED; +#endif + } + + return result; +} + +/*---------------------------------------------------------------------------- + * EAS_GetParameter() + *---------------------------------------------------------------------------- + * Purpose: + * Set the parameter of a module. See E_MODULES for a list of modules + * and the header files of the modules for a list of parameters. + * + * Inputs: + * psEASData - pointer to overall EAS data structure + * handle - file or stream handle + * module - enumerated module number + * param - enumerated parameter number + * pValue - pointer to variable to receive parameter value + * + * Outputs: + * + * + * Side Effects: + * + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetParameter (EAS_DATA_HANDLE pEASData, EAS_I32 module, EAS_I32 param, EAS_I32 *pValue) +{ + + if (module >= NUM_EFFECTS_MODULES) + return EAS_ERROR_INVALID_MODULE; + + if (pEASData->effectsModules[module].effectData == NULL) + return EAS_ERROR_INVALID_MODULE; + + return (*pEASData->effectsModules[module].effect->pFGetParam) + (pEASData->effectsModules[module].effectData, param, pValue); +} + +/*---------------------------------------------------------------------------- + * EAS_SetParameter() + *---------------------------------------------------------------------------- + * Purpose: + * Set the parameter of a module. See E_MODULES for a list of modules + * and the header files of the modules for a list of parameters. + * + * Inputs: + * psEASData - pointer to overall EAS data structure + * handle - file or stream handle + * module - enumerated module number + * param - enumerated parameter number + * value - new parameter value + * + * Outputs: + * + * + * Side Effects: + * + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetParameter (EAS_DATA_HANDLE pEASData, EAS_I32 module, EAS_I32 param, EAS_I32 value) +{ + + if (module >= NUM_EFFECTS_MODULES) + return EAS_ERROR_INVALID_MODULE; + + if (pEASData->effectsModules[module].effectData == NULL) + return EAS_ERROR_INVALID_MODULE; + + return (*pEASData->effectsModules[module].effect->pFSetParam) + (pEASData->effectsModules[module].effectData, param, value); +} + +#ifdef _METRICS_ENABLED +/*---------------------------------------------------------------------------- + * EAS_MetricsReport() + *---------------------------------------------------------------------------- + * Purpose: + * Displays the current metrics through the metrics interface. + * + * Inputs: + * p - instance data handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_MetricsReport (EAS_DATA_HANDLE pEASData) +{ + if (!pEASData->pMetricsModule) + return EAS_ERROR_INVALID_MODULE; + + return (*pEASData->pMetricsModule->pfReport)(pEASData->pMetricsData); +} + +/*---------------------------------------------------------------------------- + * EAS_MetricsReset() + *---------------------------------------------------------------------------- + * Purpose: + * Resets the metrics. + * + * Inputs: + * p - instance data handle + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_MetricsReset (EAS_DATA_HANDLE pEASData) +{ + + if (!pEASData->pMetricsModule) + return EAS_ERROR_INVALID_MODULE; + + return (*pEASData->pMetricsModule->pfReset)(pEASData->pMetricsData); +} +#endif + +/*---------------------------------------------------------------------------- + * EAS_SetSoundLibrary() + *---------------------------------------------------------------------------- + * Purpose: + * Sets the location of the sound library. + * + * Inputs: + * pEASData - instance data handle + * pSoundLib - pointer to sound library + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetSoundLibrary (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_SNDLIB_HANDLE pSndLib) +{ + if (pStream) + { + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_EAS_LIBRARY, (EAS_I32) pSndLib); + } + + return VMSetGlobalEASLib(pEASData->pVoiceMgr, pSndLib); +} + +/*---------------------------------------------------------------------------- + * EAS_SetHeaderSearchFlag() + *---------------------------------------------------------------------------- + * By default, when EAS_OpenFile is called, the parsers check the + * first few bytes of the file looking for a specific header. Some + * mobile devices may add a header to the start of a file, which + * will prevent the parser from recognizing the file. If the + * searchFlag is set to EAS_TRUE, the parser will search the entire + * file looking for the header. This may enable EAS to recognize + * some files that it would ordinarily reject. The negative is that + * it make take slightly longer to process the EAS_OpenFile request. + * + * Inputs: + * pEASData - instance data handle + * searchFlag - search flag (EAS_TRUE or EAS_FALSE) + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetHeaderSearchFlag (EAS_DATA_HANDLE pEASData, EAS_BOOL searchFlag) +{ + pEASData->searchHeaderFlag = (EAS_BOOL8) searchFlag; + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_SetPlayMode() + *---------------------------------------------------------------------------- + * Some file formats support special play modes, such as iMode partial + * play mode. This call can be used to change the play mode. The + * default play mode (usually straight playback) is always zero. + * + * Inputs: + * pEASData - instance data handle + * handle - file or stream handle + * playMode - play mode (see file parser for specifics) + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetPlayMode (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_I32 playMode) +{ + return EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_PLAY_MODE, playMode); +} + +#ifdef DLS_SYNTHESIZER +/*---------------------------------------------------------------------------- + * EAS_LoadDLSCollection() + *---------------------------------------------------------------------------- + * Purpose: + * Sets the location of the sound library. + * + * Inputs: + * pEASData - instance data handle + * pSoundLib - pointer to sound library + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_LoadDLSCollection (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_FILE_LOCATOR locator) +{ + EAS_FILE_HANDLE fileHandle; + EAS_RESULT result; + EAS_DLSLIB_HANDLE pDLS; + + if (pStream != NULL) + { + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + } + + /* open the file */ + if ((result = EAS_HWOpenFile(pEASData->hwInstData, locator, &fileHandle, EAS_FILE_READ)) != EAS_SUCCESS) + return result; + + /* parse the file */ + result = DLSParser(pEASData->hwInstData, fileHandle, 0, &pDLS); + EAS_HWCloseFile(pEASData->hwInstData, fileHandle); + + if (result == EAS_SUCCESS) + { + + /* if a stream pStream is specified, point it to the DLS collection */ + if (pStream) + result = EAS_IntSetStrmParam(pEASData, pStream, PARSER_DATA_DLS_COLLECTION, (EAS_I32) pDLS); + + /* global DLS load */ + else + result = VMSetGlobalDLSLib(pEASData, pDLS); + } + + return result; +} +#endif + +#ifdef EXTERNAL_AUDIO +/*---------------------------------------------------------------------------- + * EAS_RegExtAudioCallback() + *---------------------------------------------------------------------------- + * Purpose: + * Registers callback functions for audio events. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * cbProgChgFunc - pointer to host callback function for program change + * cbEventFunc - pointer to host callback functio for note events + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_RegExtAudioCallback (EAS_DATA_HANDLE pEASData, + EAS_HANDLE pStream, + EAS_VOID_PTR pInstData, + EAS_EXT_PRG_CHG_FUNC cbProgChgFunc, + EAS_EXT_EVENT_FUNC cbEventFunc) +{ + S_SYNTH *pSynth; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + if (EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_SYNTH_HANDLE, (EAS_I32*) &pSynth) != EAS_SUCCESS) + return EAS_ERROR_INVALID_PARAMETER; + + if (pSynth == NULL) + return EAS_ERROR_INVALID_PARAMETER; + + VMRegExtAudioCallback(pSynth, pInstData, cbProgChgFunc, cbEventFunc); + return EAS_SUCCESS; +} + +/*---------------------------------------------------------------------------- + * EAS_GetMIDIControllers() + *---------------------------------------------------------------------------- + * Purpose: + * Returns the current state of MIDI controllers on the requested channel. + * + * Inputs: + * pEASData - pointer to overall EAS data structure + * handle - file or stream handle + * pControl - pointer to structure to receive data + * + * Outputs: + * + * + * Side Effects: + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_GetMIDIControllers (EAS_DATA_HANDLE pEASData, EAS_HANDLE pStream, EAS_U8 channel, S_MIDI_CONTROLLERS *pControl) +{ + S_SYNTH *pSynth; + + if (!EAS_StreamReady(pEASData, pStream)) + return EAS_ERROR_NOT_VALID_IN_THIS_STATE; + + if (EAS_GetStreamParameter(pEASData, pStream, PARSER_DATA_SYNTH_HANDLE, (EAS_I32*) &pSynth) != EAS_SUCCESS) + return EAS_ERROR_INVALID_PARAMETER; + + if (pSynth == NULL) + return EAS_ERROR_INVALID_PARAMETER; + + VMGetMIDIControllers(pSynth, channel, pControl); + return EAS_SUCCESS; +} +#endif + +#ifdef _SPLIT_ARCHITECTURE +/*---------------------------------------------------------------------------- + * EAS_SetFrameBuffer() + *---------------------------------------------------------------------------- + * Purpose: + * Sets the frame buffer pointer passed to the IPC communications functions + * + * Inputs: + * pEASData - instance data handle + * locator - file locator + * + * Outputs: + * + * + * Side Effects: + * May overlay instruments in the GM sound set + * + *---------------------------------------------------------------------------- +*/ +EAS_PUBLIC EAS_RESULT EAS_SetFrameBuffer (EAS_DATA_HANDLE pEASData, EAS_FRAME_BUFFER_HANDLE pFrameBuffer) +{ + if (pEASData->pVoiceMgr) + pEASData->pVoiceMgr->pFrameBuffer = pFrameBuffer; + return EAS_SUCCESS; +} +#endif + +/*---------------------------------------------------------------------------- + * EAS_SearchFile + *---------------------------------------------------------------------------- + * Search file for specific sequence starting at current file + * position. Returns offset to start of sequence. + * + * Inputs: + * pEASData - pointer to EAS persistent data object + * fileHandle - file handle + * searchString - pointer to search sequence + * len - length of search sequence + * pOffset - pointer to variable to store offset to sequence + * + * Returns EAS_EOF if end-of-file is reached + *---------------------------------------------------------------------------- +*/ +EAS_RESULT EAS_SearchFile (S_EAS_DATA *pEASData, EAS_FILE_HANDLE fileHandle, const EAS_U8 *searchString, EAS_I32 len, EAS_I32 *pOffset) +{ + EAS_RESULT result; + EAS_INT index; + EAS_U8 c; + + *pOffset = -1; + index = 0; + for (;;) + { + result = EAS_HWGetByte(pEASData->hwInstData, fileHandle, &c); + if (result != EAS_SUCCESS) + return result; + if (c == searchString[index]) + { + index++; + if (index == 4) + { + result = EAS_HWFilePos(pEASData->hwInstData, fileHandle, pOffset); + if (result != EAS_SUCCESS) + return result; + *pOffset -= len; + break; + } + } + else + index = 0; + } + return EAS_SUCCESS; +} + + |