/* API: Init factory */
static pj_status_t opensl_init(pjmedia_aud_dev_factory *f)
{
struct opensl_aud_factory *pa = (struct opensl_aud_factory*)f;
SLresult result;
/* Create engine */
result = slCreateEngine(&pa->engineObject, 0, NULL, 0, NULL, NULL);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot create engine %d ", result));
return opensl_to_pj_error(result);
}
/* Realize the engine */
result = (*pa->engineObject)->Realize(pa->engineObject, SL_BOOLEAN_FALSE);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot realize engine"));
opensl_destroy(f);
return opensl_to_pj_error(result);
}
/* Get the engine interface, which is needed in order to create
* other objects.
*/
result = (*pa->engineObject)->GetInterface(pa->engineObject,
SL_IID_ENGINE,
&pa->engineEngine);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot get engine interface"));
opensl_destroy(f);
return opensl_to_pj_error(result);
}
/* Create output mix */
result = (*pa->engineEngine)->CreateOutputMix(pa->engineEngine,
&pa->outputMixObject,
0, NULL, NULL);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot create output mix"));
opensl_destroy(f);
return opensl_to_pj_error(result);
}
/* Realize the output mix */
result = (*pa->outputMixObject)->Realize(pa->outputMixObject,
SL_BOOLEAN_FALSE);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot realize output mix"));
opensl_destroy(f);
return opensl_to_pj_error(result);
}
PJ_LOG(4,(THIS_FILE, "OpenSL sound library initialized"));
return PJ_SUCCESS;
}
/* API: start stream. */
static pj_status_t strm_start(pjmedia_aud_stream *s)
{
struct opensl_aud_stream *stream = (struct opensl_aud_stream*)s;
int i;
SLresult result = SL_RESULT_SUCCESS;
PJ_LOG(4, (THIS_FILE, "Starting %s stream..", stream->name.ptr));
stream->quit_flag = 0;
if (stream->recordBufQ && stream->recordRecord) {
/* Enqueue an empty buffer to be filled by the recorder
* (for streaming recording, we need to enqueue at least 2 empty
* buffers to start things off)
*/
for (i = 0; i < NUM_BUFFERS; i++) {
result = (*stream->recordBufQ)->Enqueue(stream->recordBufQ,
stream->recordBuffer[i],
stream->recordBufferSize);
/* The most likely other result is SL_RESULT_BUFFER_INSUFFICIENT,
* which for this code would indicate a programming error
*/
pj_assert(result == SL_RESULT_SUCCESS);
}
result = (*stream->recordRecord)->SetRecordState(
stream->recordRecord, SL_RECORDSTATE_RECORDING);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot start recorder"));
goto on_error;
}
}
if (stream->playerPlay && stream->playerBufQ) {
/* Set the player's state to playing */
result = (*stream->playerPlay)->SetPlayState(stream->playerPlay,
SL_PLAYSTATE_PLAYING);
if (result != SL_RESULT_SUCCESS) {
PJ_LOG(3, (THIS_FILE, "Cannot start player"));
goto on_error;
}
for (i = 0; i < NUM_BUFFERS; i++) {
pj_bzero(stream->playerBuffer[i], stream->playerBufferSize/100);
result = (*stream->playerBufQ)->Enqueue(stream->playerBufQ,
stream->playerBuffer[i],
stream->playerBufferSize/100);
pj_assert(result == SL_RESULT_SUCCESS);
}
}
PJ_LOG(4, (THIS_FILE, "%s stream started", stream->name.ptr));
return PJ_SUCCESS;
on_error:
if (result != SL_RESULT_SUCCESS)
strm_stop(&stream->base);
return opensl_to_pj_error(result);
}