org_tritonus_lowlevel_alsa_alsapcm.c

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JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_getSWParams
(JNIEnv *env, jobject obj, jobject objSwParams)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_getSWParams(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_getSWParams(): swparams handle: %p\n", swParams); }
	nReturn = snd_pcm_sw_params_current(handle, swParams);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_getSWParams(): snd_pcm_sw_params_any() returns: %d\n", nReturn); }
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_getSWParams(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsStartMode
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartMode
(JNIEnv *env, jobject obj, jobject objSwParams, jint nStartMode)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartMode(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_start_mode(handle, swParams, (snd_pcm_start_t) nStartMode);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartMode(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsXrunMode
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXrunMode
(JNIEnv *env, jobject obj, jobject objSwParams, jint nXrunMode)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXrunMode(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_xrun_mode(handle, swParams, (snd_pcm_xrun_t) nXrunMode);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXrunMode(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsTStampMode
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsTStampMode
(JNIEnv *env, jobject obj, jobject objSwParams, jint nTStampMode)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsTStampMode(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_tstamp_mode(handle, swParams, (snd_pcm_tstamp_t) nTStampMode);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsTStampMode(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsSleepMin
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSleepMin
(JNIEnv *env, jobject obj, jobject objSwParams, jint nSleepMin)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSleepMin(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_sleep_min(handle, swParams, nSleepMin);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSleepMin(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsAvailMin
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsAvailMin
(JNIEnv *env, jobject obj, jobject objSwParams, jint nAvailMin)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsAvailMin(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_avail_min(handle, swParams, nAvailMin);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsAvailMin(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsXferAlign
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXferAlign
(JNIEnv *env, jobject obj, jobject objSwParams, jint nXferAlign)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXferAlign(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_xfer_align(handle, swParams, nXferAlign);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsXferAlign(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsStartThreshold
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartThreshold
(JNIEnv *env, jobject obj, jobject objSwParams, jint nStartThreshold)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartThreshold(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_start_threshold(handle, swParams, nStartThreshold);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStartThreshold(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsStopThreshold
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStopThreshold
(JNIEnv *env, jobject obj, jobject objSwParams, jint nStopThreshold)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStopThreshold(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_stop_threshold(handle, swParams, nStopThreshold);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsStopThreshold(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsSilenceThreshold
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceThreshold
(JNIEnv *env, jobject obj, jobject objSwParams, jint nSilenceThreshold)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceThreshold(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_silence_threshold(handle, swParams, nSilenceThreshold);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceThreshold(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParamsSilenceSize
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;I)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceSize
(JNIEnv *env, jobject obj, jobject objSwParams, jint nSilenceSize)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceSize(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params_set_silence_size(handle, swParams, nSilenceSize);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParamsSilenceSize(): end\n"); }
	return nReturn;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setSWParams
 * Signature: (Lorg/tritonus/lowlevel/alsa/AlsaPcm$SWParams;)I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParams
(JNIEnv *env, jobject obj, jobject objSwParams)
{
	snd_pcm_t*		handle;
	snd_pcm_sw_params_t*	swParams;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParams(): begin\n"); }
	handle = getHandle(env, obj);
	swParams = getSWParamsNativeHandle(env, objSwParams);
	nReturn = snd_pcm_sw_params(handle, swParams);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_setSWParams(): end\n"); }
	return nReturn;
}







/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    writei
 * Signature: ([BJJ)J
 */
JNIEXPORT jlong JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_writei
(JNIEnv *env, jobject obj, jbyteArray abData, jlong lOffset, jlong lFrameCount)
{
	snd_pcm_t*	handle;
	signed char*	data;
	snd_pcm_sframes_t	lWritten;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_writei(): begin\n"); }
	handle = getHandle(env, obj);
	data = (*env)->GetByteArrayElements(env, abData, NULL);
	if (data == NULL)
	{
 		throwRuntimeException(env, "GetByteArrayElements() failed");
	}
	if (debug_flag) { printf("Java_org_tritonus_lowlevel_alsa_AlsaPcm_writei(): trying to write (frames): %lld\n", lFrameCount); }
	lWritten = snd_pcm_writei(handle, data + lOffset, lFrameCount);
	if (debug_flag) { printf("Java_org_tritonus_lowlevel_alsa_AlsaPcm_writei(): Written: %ld\n", lWritten); }
	// we can do a JNI_ABORT because we know the data wasn't altered.
	// This may improve performance (no copying back).
	(*env)->ReleaseByteArrayElements(env, abData, data, JNI_ABORT);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_writei(): end\n"); }
	return lWritten;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    readi
 * Signature: ([BJJ)J
 */
JNIEXPORT jlong JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_readi
(JNIEnv *env, jobject obj, jbyteArray abData, jlong lOffset, jlong lFrameCount)
{
	snd_pcm_t*		handle;
	signed char*		data;
	snd_pcm_sframes_t	lRead;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_readi(): begin\n"); }
	handle = getHandle(env, obj);
	data = (*env)->GetByteArrayElements(env, abData, NULL);
	printf("native array: %p\n", data);
	if (data == NULL)
	{
 		throwRuntimeException(env, "GetByteArrayElements() failed");
	}
	if (debug_flag) { printf("Java_org_tritonus_lowlevel_alsa_AlsaPcm_readi(): trying to read (frames): %lld\n", lFrameCount); }
	// To the ALSA method, frame count means number of complete PCM frames.
	// Frame: sample data vector for all channels. For 16 Bit stereo data, one frame has a length of four bytes.
	lRead = snd_pcm_readi(handle, data + lOffset, lFrameCount);
	if (debug_flag) { printf("Java_org_tritonus_lowlevel_alsa_AlsaPcm_readi(): Read: %ld\n", lRead); }
	// printf("1\n");
	(*env)->ReleaseByteArrayElements(env, abData, data, 0);
	// printf("2\n");
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_alsa_AlsaPcm_readi(): end\n"); }
	return lRead;
}



/*
 * Class:     org_tritonus_lowlevel_alsa_AlsaPcm
 * Method:    setTrace
 * Signature: (Z)V
 */
JNIEXPORT void JNICALL
Java_org_tritonus_lowlevel_alsa_AlsaPcm_setTrace
(JNIEnv* env UNUSED, jclass cls UNUSED, jboolean bTrace)
{
	debug_flag = bTrace;
	debug_file = stderr;
}



/*** org_tritonus_lowlevel_alsa_AlsaPcm.c ***/