status_t MidiFile::start()
{
ALOGV("MidiFile::start");
Mutex::Autolock lock(mMutex);
if (!mEasHandle) {
return ERROR_NOT_OPEN;
}
if (mState == EAS_STATE_STOPPED) {
int mStartTime = (mPlayTime >= mDuration) ? 0 : mPlayTime;
if (EAS_Locate(mEasData, mEasHandle, mStartTime, false)
!= EAS_SUCCESS) {
ALOGE("EAS_Locate failed");
return ERROR_EAS_FAILURE;
}
EAS_GetLocation(mEasData, mEasHandle, &mPlayTime);
}
// resuming after pause?
if (mPaused) {
if (EAS_Resume(mEasData, mEasHandle) != EAS_SUCCESS) {
return ERROR_EAS_FAILURE;
}
mPaused = false;
updateState();
}
mRender = true;
// Due to the limitation of EAS_XXX interfaces design, there's no way
// to restart midi playback again once last track reaches EOS.
// Here introduces a hack to enforce start again
mState = EAS_STATE_PLAY;
if (mState == EAS_STATE_PLAY) {
sendEvent(MEDIA_STARTED);
}
// wake up render thread
ALOGV(" wakeup render thread");
mCondition.signal();
return NO_ERROR;
}
status_t MidiFile::seekTo(int position)
{
ALOGV("MidiFile::seekTo %d", position);
// hold lock during EAS calls
{
Mutex::Autolock lock(mMutex);
if (!mEasHandle) {
return ERROR_NOT_OPEN;
}
EAS_RESULT result;
if ((result = EAS_Locate(mEasData, mEasHandle, position, false))
!= EAS_SUCCESS)
{
ALOGE("EAS_Locate returned %ld", result);
return ERROR_EAS_FAILURE;
}
EAS_GetLocation(mEasData, mEasHandle, &mPlayTime);
}
sendEvent(MEDIA_SEEK_COMPLETE);
return NO_ERROR;
}
status_t MidiEngine::seekTo(int64_t positionUs) {
ALOGV("seekTo %lld", positionUs);
EAS_RESULT result = EAS_Locate(mEasData, mEasHandle, positionUs / 1000, false);
return result == EAS_SUCCESS ? OK : UNKNOWN_ERROR;
}
