static MediaScanResult HandleMIDI(
const char *filename, MediaScannerClient *client) {
// get the library configuration and do sanity check
const S_EAS_LIB_CONFIG* pLibConfig = EAS_Config();
if ((pLibConfig == NULL) || (LIB_VERSION != pLibConfig->libVersion)) {
LOGE("EAS library/header mismatch\n");
return MEDIA_SCAN_RESULT_ERROR;
}
EAS_I32 temp;
// spin up a new EAS engine
EAS_DATA_HANDLE easData = NULL;
EAS_HANDLE easHandle = NULL;
EAS_RESULT result = EAS_Init(&easData);
if (result == EAS_SUCCESS) {
EAS_FILE file;
file.path = filename;
file.fd = 0;
file.offset = 0;
file.length = 0;
result = EAS_OpenFile(easData, &file, &easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_Prepare(easData, easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_ParseMetaData(easData, easHandle, &temp);
}
if (easHandle) {
EAS_CloseFile(easData, easHandle);
}
if (easData) {
EAS_Shutdown(easData);
}
if (result != EAS_SUCCESS) {
#ifndef ANDROID_DEFAULT_CODE
client->setMimeType("bad mime type");
#endif // ANDROID_DEFAULT_CODE
return MEDIA_SCAN_RESULT_SKIPPED;
}
char buffer[20];
sprintf(buffer, "%ld", temp);
status_t status = client->addStringTag("duration", buffer);
if (status != OK) {
return MEDIA_SCAN_RESULT_ERROR;
}
#ifndef ANDROID_DEFAULT_CODE
status_t status_res = client->addStringTag("isAccurateDuration", "1");
if (status_res) {
return MEDIA_SCAN_RESULT_ERROR;
}
#endif // ANDROID_DEFAULT_CODE
return MEDIA_SCAN_RESULT_OK;
}
status_t MidiFile::prepare()
{
ALOGV("MidiFile::prepare");
Mutex::Autolock lock(mMutex);
if (!mEasHandle) {
return ERROR_NOT_OPEN;
}
EAS_RESULT result;
if ((result = EAS_Prepare(mEasData, mEasHandle)) != EAS_SUCCESS) {
ALOGE("EAS_Prepare failed: [%ld]", result);
return ERROR_EAS_FAILURE;
}
updateState();
return NO_ERROR;
}
static status_t HandleMIDI(
const char *filename, MediaScannerClient *client) {
// get the library configuration and do sanity check
const S_EAS_LIB_CONFIG* pLibConfig = EAS_Config();
if ((pLibConfig == NULL) || (LIB_VERSION != pLibConfig->libVersion)) {
LOGE("EAS library/header mismatch\n");
return UNKNOWN_ERROR;
}
EAS_I32 temp;
// spin up a new EAS engine
EAS_DATA_HANDLE easData = NULL;
EAS_HANDLE easHandle = NULL;
EAS_RESULT result = EAS_Init(&easData);
if (result == EAS_SUCCESS) {
EAS_FILE file;
file.path = filename;
file.fd = 0;
file.offset = 0;
file.length = 0;
result = EAS_OpenFile(easData, &file, &easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_Prepare(easData, easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_ParseMetaData(easData, easHandle, &temp);
}
if (easHandle) {
EAS_CloseFile(easData, easHandle);
}
if (easData) {
EAS_Shutdown(easData);
}
if (result != EAS_SUCCESS) {
return UNKNOWN_ERROR;
}
char buffer[20];
sprintf(buffer, "%ld", temp);
if (!client->addStringTag("duration", buffer)) return UNKNOWN_ERROR;
return OK;
}
status_t MidiFile::getDuration(int* duration)
{
ALOGV("MidiFile::getDuration");
{
Mutex::Autolock lock(mMutex);
if (!mEasHandle) return ERROR_NOT_OPEN;
*duration = mDuration;
}
// if no duration cached, get the duration
// don't need a lock here because we spin up a new engine
if (*duration < 0) {
EAS_I32 temp;
EAS_DATA_HANDLE easData = NULL;
EAS_HANDLE easHandle = NULL;
EAS_RESULT result = EAS_Init(&easData);
if (result == EAS_SUCCESS) {
result = EAS_OpenFile(easData, &mFileLocator, &easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_Prepare(easData, easHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_ParseMetaData(easData, easHandle, &temp);
}
if (easHandle) {
EAS_CloseFile(easData, easHandle);
}
if (easData) {
EAS_Shutdown(easData);
}
if (result != EAS_SUCCESS) {
return ERROR_EAS_FAILURE;
}
// cache successful result
mDuration = *duration = int(temp);
}
return NO_ERROR;
}
MidiEngine::MidiEngine(const sp<DataSource> &dataSource,
const sp<MetaData> &fileMetadata,
const sp<MetaData> &trackMetadata) :
mGroup(NULL),
mEasData(NULL),
mEasHandle(NULL),
mEasConfig(NULL),
mIsInitialized(false) {
mIoWrapper = new MidiIoWrapper(dataSource);
// spin up a new EAS engine
EAS_I32 temp;
EAS_RESULT result = EAS_Init(&mEasData);
if (result == EAS_SUCCESS) {
result = EAS_OpenFile(mEasData, mIoWrapper->getLocator(), &mEasHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_Prepare(mEasData, mEasHandle);
}
if (result == EAS_SUCCESS) {
result = EAS_ParseMetaData(mEasData, mEasHandle, &temp);
}
if (result != EAS_SUCCESS) {
return;
}
if (fileMetadata != NULL) {
fileMetadata->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MIDI);
}
if (trackMetadata != NULL) {
trackMetadata->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW);
trackMetadata->setInt64(kKeyDuration, 1000ll * temp); // milli->micro
mEasConfig = EAS_Config();
trackMetadata->setInt32(kKeySampleRate, mEasConfig->sampleRate);
trackMetadata->setInt32(kKeyChannelCount, mEasConfig->numChannels);
}
mIsInitialized = true;
}
// play
MIDI_RESULT MIDI_PlayFile(char *path, MIDI_HANDLE *handle)
{
EAS_RESULT result;
// fill in file struct
file.path = path;
file.fd = 0;
// lock
pthread_mutex_lock(&mutex);
// open file
if ((result = EAS_OpenFile(pEASData, &file, handle)) != EAS_SUCCESS)
{
// unlock
pthread_mutex_unlock(&mutex);
return result;
}
// unlock
pthread_mutex_unlock(&mutex);
// lock
pthread_mutex_lock(&mutex);
// prepare
if ((result = EAS_Prepare(pEASData, *handle)) != EAS_SUCCESS)
{
// unlock
pthread_mutex_unlock(&mutex);
return result;
}
// unlock
pthread_mutex_unlock(&mutex);
return MIDI_SUCCESS;
}
static EAS_RESULT PlayFile (EAS_DATA_HANDLE easData, const char* filename, const char* outputFile, const S_EAS_LIB_CONFIG *pLibConfig, void *buffer, EAS_I32 bufferSize)
{
EAS_HANDLE handle;
EAS_RESULT result, reportResult;
EAS_I32 count;
EAS_STATE state;
EAS_I32 playTime;
char waveFilename[256];
WAVE_FILE *wFile;
EAS_INT i;
EAS_PCM *p;
EAS_FILE file;
/* determine the name of the output file */
wFile = NULL;
if (outputFile == NULL)
{
StrCopy(waveFilename, filename, sizeof(waveFilename));
if (!ChangeFileExt(waveFilename, "wav", sizeof(waveFilename)))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error in output filename %s\n", waveFilename); */ }
return EAS_FAILURE;
}
outputFile = waveFilename;
}
/* call EAS library to open file */
file.path = filename;
file.fd = 0;
if ((reportResult = EAS_OpenFile(easData, &file, &handle)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_OpenFile returned %ld\n", reportResult); */ }
return reportResult;
}
/* prepare to play the file */
if ((result = EAS_Prepare(easData, handle)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_Prepare returned %ld\n", result); */ }
reportResult = result;
}
/* get play length */
if ((result = EAS_ParseMetaData(easData, handle, &playTime)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_ParseMetaData returned %ld\n", result); */ }
return result;
}
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0xe624f4d9, 0x00000005 , playTime / 1000, playTime % 1000);
if (reportResult == EAS_SUCCESS)
{
/* create the output file */
wFile = WaveFileCreate(outputFile, pLibConfig->numChannels, pLibConfig->sampleRate, sizeof(EAS_PCM) * 8);
if (!wFile)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Unable to create output file %s\n", waveFilename); */ }
reportResult = EAS_FAILURE;
}
}
/* rendering loop */
while (reportResult == EAS_SUCCESS)
{
/* we may render several buffers here to fill one host buffer */
for (i = 0, p = buffer; i < NUM_BUFFERS; i++, p+= pLibConfig->mixBufferSize * pLibConfig->numChannels)
{
/* get the current time */
if ((result = EAS_GetLocation(easData, handle, &playTime)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_GetLocation returned %d\n",result); */ }
if (reportResult == EAS_SUCCESS)
reportResult = result;
break;
}
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_DETAIL, "Parser time: %d.%03d\n", playTime / 1000, playTime % 1000); */ }
/* render a buffer of audio */
if ((result = EAS_Render(easData, p, pLibConfig->mixBufferSize, &count)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_Render returned %d\n",result); */ }
if (reportResult == EAS_SUCCESS)
reportResult = result;
}
}
if (result == EAS_SUCCESS)
{
/* write it to the wave file */
if (WaveFileWrite(wFile, buffer, bufferSize) != bufferSize)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "WaveFileWrite failed\n"); */ }
reportResult = EAS_FAILURE;
}
}
if (reportResult == EAS_SUCCESS)
{
/* check stream state */
if ((result = EAS_State(easData, handle, &state)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_State returned %d\n", result); */ }
reportResult = result;
}
/* is playback complete */
if ((state == EAS_STATE_STOPPED) || (state == EAS_STATE_ERROR))
break;
}
}
/* close the output file */
if (wFile)
{
if (!WaveFileClose(wFile))
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "Error closing wave file %s\n", waveFilename); */ }
if (reportResult == EAS_SUCCESS)
result = EAS_FAILURE;
}
}
/* close the input file */
if ((result = EAS_CloseFile(easData,handle)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "EAS_Close returned %ld\n", result); */ }
if (reportResult == EAS_SUCCESS)
result = EAS_FAILURE;
}
return reportResult;
} /* end PlayFile */