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am e9b0dd89: Merge "Add audio level monitoring capabilities in Visualizer effect" into klp-dev

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* commit 'e9b0dd899a715531b7960909744fcf874c761118':
  Add audio level monitoring capabilities in Visualizer effect
This commit is contained in:
Jean-Michel Trivi
2013-09-23 19:00:22 -07:00
committed by Android Git Automerger
parent d79c8671ec e9b0dd899a
commit b25f264052
2 changed files with 182 additions and 0 deletions
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110
media/java/android/media/audiofx/Visualizer.java
View File

@@ -93,6 +93,24 @@ public class Visualizer {
*/
public static final int SCALING_MODE_AS_PLAYED = 1;
/**
* @hide
* CANDIDATE FOR PUBLIC API
* Defines a measurement mode with no requested measurement.
*/
public static final int MEASUREMENT_MODE_NONE = 0;
/**
* @hide
* CANDIDATE FOR PUBLIC API
* Defines a measurement mode which computes the peak and RMS value in mB, where 0mB is the
* maximum sample value, and -9600mB is the minimum value.
* Values for peak and RMS can be retrieved with {@link #getIntMeasurements(int, int[])}, where
* the array holds the peak value at index {@link #MEASUREMENT_INDEX_PEAK} in the measurement
* array, and the RMS value at index {@link #MEASUREMENT_INDEX_RMS}.
*/
public static final int MEASUREMENT_MODE_PEAK_RMS = 1 << 0;
// to keep in sync with frameworks/base/media/jni/audioeffect/android_media_Visualizer.cpp
private static final int NATIVE_EVENT_PCM_CAPTURE = 0;
private static final int NATIVE_EVENT_FFT_CAPTURE = 1;
@@ -349,6 +367,47 @@ public class Visualizer {
}
}
/**
* @hide
* CANDIDATE FOR PUBLIC API
* Sets the combination of measurement modes to be performed by this audio effect.
* @param mode a mask of the measurements to perform. The valid values are
* {@link #MEASUREMENT_MODE_NONE} (to cancel any measurement)
* or {@link #MEASUREMENT_MODE_PEAK_RMS}.
* @return {@link #SUCCESS} in case of success, {@link #ERROR_BAD_VALUE} in case of failure.
* @throws IllegalStateException
*/
public int setMeasurementMode(int mode)
throws IllegalStateException {
synchronized (mStateLock) {
if (mState == STATE_UNINITIALIZED) {
throw(new IllegalStateException("setMeasurementMode() called in wrong state: "
+ mState));
}
return native_setMeasurementMode(mode);
}
}
/**
* @hide
* CANDIDATE FOR PUBLIC API
* Returns the current measurement modes performed by this audio effect
* @return the mask of the measurements,
* {@link #MEASUREMENT_MODE_NONE} (when no measurements are performed)
* or {@link #MEASUREMENT_MODE_PEAK_RMS}.
* @throws IllegalStateException
*/
public int getMeasurementMode()
throws IllegalStateException {
synchronized (mStateLock) {
if (mState == STATE_UNINITIALIZED) {
throw(new IllegalStateException("getMeasurementMode() called in wrong state: "
+ mState));
}
return native_getMeasurementMode();
}
}
/**
* Returns the sampling rate of the captured audio.
* @return the sampling rate in milliHertz.
@@ -437,6 +496,51 @@ public class Visualizer {
}
}
/**
* @hide
* CANDIDATE FOR PUBLIC API
* A class to store peak and RMS values.
* Peak and RMS are expressed in mB, as described in the
* {@link Visualizer#MEASUREMENT_MODE_PEAK_RMS} measurement mode.
*/
public static final class MeasurementPeakRms {
/**
* @hide
* CANDIDATE FOR PUBLIC API
*/
public int mPeak;
/**
* @hide
* CANDIDATE FOR PUBLIC API
*/
public int mRms;
}
/**
* @hide
* Retrieves the latest peak and RMS measurement.
* Sets the peak and RMS fields of the {@link Visualizer.MeasurementPeakRms} to the latest
* measured values.
* @param measurement a non-null {@link Visualizer.MeasurementPeakRms} instance to store
* the measurement values.
* @return {@link #SUCCESS} in case of success, {@link #ERROR_BAD_VALUE},
* {@link #ERROR_NO_MEMORY}, {@link #ERROR_INVALID_OPERATION} or {@link #ERROR_DEAD_OBJECT}
* in case of failure.
*/
public int getMeasurementPeakRms(MeasurementPeakRms measurement) {
if (measurement == null) {
Log.e(TAG, "Cannot store measurements in a null object");
return ERROR_BAD_VALUE;
}
synchronized (mStateLock) {
if (mState != STATE_ENABLED) {
throw (new IllegalStateException("getMeasurementPeakRms() called in wrong state: "
+ mState));
}
return native_getPeakRms(measurement);
}
}
//---------------------------------------------------------
// Interface definitions
//--------------------
@@ -640,12 +744,18 @@ public class Visualizer {
private native final int native_getScalingMode();
private native final int native_setMeasurementMode(int mode);
private native final int native_getMeasurementMode();
private native final int native_getSamplingRate();
private native final int native_getWaveForm(byte[] waveform);
private native final int native_getFft(byte[] fft);
private native final int native_getPeakRms(MeasurementPeakRms measurement);
private native final int native_setPeriodicCapture(int rate, boolean waveForm, boolean fft);
//---------------------------------------------------------

72
media/jni/audioeffect/android_media_Visualizer.cpp
View File

@@ -43,6 +43,8 @@ using namespace android;
// ----------------------------------------------------------------------------
static const char* const kClassPathName = "android/media/audiofx/Visualizer";
static const char* const kClassPeakRmsPathName =
"android/media/audiofx/Visualizer$MeasurementPeakRms";
struct fields_t {
// these fields provide access from C++ to the...
@@ -50,6 +52,8 @@ struct fields_t {
jmethodID midPostNativeEvent; // event post callback method
jfieldID fidNativeVisualizer; // stores in Java the native Visualizer object
jfieldID fidJniData; // stores in Java additional resources used by the native Visualizer
jfieldID fidPeak; // to access Visualizer.MeasurementPeakRms.mPeak
jfieldID fidRms; // to access Visualizer.MeasurementPeakRms.mRms
};
static fields_t fields;
@@ -257,6 +261,14 @@ android_media_visualizer_native_init(JNIEnv *env)
fields.clazzEffect = (jclass)env->NewGlobalRef(clazz);
// Get the Visualizer.MeasurementPeakRms class
clazz = env->FindClass(kClassPeakRmsPathName);
if (clazz == NULL) {
ALOGE("Can't find %s", kClassPeakRmsPathName);
return;
}
jclass clazzMeasurementPeakRms = (jclass)env->NewGlobalRef(clazz);
// Get the postEvent method
fields.midPostNativeEvent = env->GetStaticMethodID(
fields.clazzEffect,
@@ -283,7 +295,24 @@ android_media_visualizer_native_init(JNIEnv *env)
ALOGE("Can't find Visualizer.%s", "mJniData");
return;
}
// fidPeak
fields.fidPeak = env->GetFieldID(
clazzMeasurementPeakRms,
"mPeak", "I");
if (fields.fidPeak == NULL) {
ALOGE("Can't find Visualizer.MeasurementPeakRms.%s", "mPeak");
return;
}
// fidRms
fields.fidRms = env->GetFieldID(
clazzMeasurementPeakRms,
"mRms", "I");
if (fields.fidRms == NULL) {
ALOGE("Can't find Visualizer.MeasurementPeakRms.%s", "mPeak");
return;
}
env->DeleteGlobalRef(clazzMeasurementPeakRms);
}
static void android_media_visualizer_effect_callback(int32_t event,
@@ -512,6 +541,26 @@ android_media_visualizer_native_getScalingMode(JNIEnv *env, jobject thiz)
return lpVisualizer->getScalingMode();
}
static jint
android_media_visualizer_native_setMeasurementMode(JNIEnv *env, jobject thiz, jint mode)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
return translateError(lpVisualizer->setMeasurementMode(mode));
}
static jint
android_media_visualizer_native_getMeasurementMode(JNIEnv *env, jobject thiz)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return MEASUREMENT_MODE_NONE;
}
return lpVisualizer->getMeasurementMode();
}
static jint
android_media_visualizer_native_getSamplingRate(JNIEnv *env, jobject thiz)
{
@@ -559,6 +608,25 @@ android_media_visualizer_native_getFft(JNIEnv *env, jobject thiz, jbyteArray jFf
return status;
}
static jint
android_media_visualizer_native_getPeakRms(JNIEnv *env, jobject thiz, jobject jPeakRmsObj)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
int32_t measurements[2];
jint status = translateError(
lpVisualizer->getIntMeasurements(MEASUREMENT_MODE_PEAK_RMS,
2, measurements));
if (status == VISUALIZER_SUCCESS) {
// measurement worked, write the values to the java object
env->SetIntField(jPeakRmsObj, fields.fidPeak, measurements[MEASUREMENT_IDX_PEAK]);
env->SetIntField(jPeakRmsObj, fields.fidRms, measurements[MEASUREMENT_IDX_RMS]);
}
return status;
}
static jint
android_media_setPeriodicCapture(JNIEnv *env, jobject thiz, jint rate, jboolean jWaveform, jboolean jFft)
{
@@ -606,9 +674,13 @@ static JNINativeMethod gMethods[] = {
{"native_getCaptureSize", "()I", (void *)android_media_visualizer_native_getCaptureSize},
{"native_setScalingMode", "(I)I", (void *)android_media_visualizer_native_setScalingMode},
{"native_getScalingMode", "()I", (void *)android_media_visualizer_native_getScalingMode},
{"native_setMeasurementMode","(I)I", (void *)android_media_visualizer_native_setMeasurementMode},
{"native_getMeasurementMode","()I", (void *)android_media_visualizer_native_getMeasurementMode},
{"native_getSamplingRate", "()I", (void *)android_media_visualizer_native_getSamplingRate},
{"native_getWaveForm", "([B)I", (void *)android_media_visualizer_native_getWaveForm},
{"native_getFft", "([B)I", (void *)android_media_visualizer_native_getFft},
{"native_getPeakRms", "(Landroid/media/audiofx/Visualizer$MeasurementPeakRms;)I",
(void *)android_media_visualizer_native_getPeakRms},
{"native_setPeriodicCapture","(IZZ)I",(void *)android_media_setPeriodicCapture},
};