M7350/base/media/jni/audioeffect/android_media_Visualizer.cpp

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2024-09-09 08:52:07 +00:00
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
//#define LOG_NDEBUG 0
#define LOG_TAG "visualizers-JNI"
#include <utils/Log.h>
#include <nativehelper/jni.h>
#include <nativehelper/JNIHelp.h>
#include <android_runtime/AndroidRuntime.h>
#include "media/Visualizer.h"
using namespace android;
#define VISUALIZER_SUCCESS 0
#define VISUALIZER_ERROR -1
#define VISUALIZER_ERROR_ALREADY_EXISTS -2
#define VISUALIZER_ERROR_NO_INIT -3
#define VISUALIZER_ERROR_BAD_VALUE -4
#define VISUALIZER_ERROR_INVALID_OPERATION -5
#define VISUALIZER_ERROR_NO_MEMORY -6
#define VISUALIZER_ERROR_DEAD_OBJECT -7
#define NATIVE_EVENT_PCM_CAPTURE 0
#define NATIVE_EVENT_FFT_CAPTURE 1
// ----------------------------------------------------------------------------
static const char* const kClassPathName = "android/media/audiofx/Visualizer";
struct fields_t {
// these fields provide access from C++ to the...
jclass clazzEffect; // Visualizer class
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
};
static fields_t fields;
struct visualizer_callback_cookie {
jclass visualizer_class; // Visualizer class
jobject visualizer_ref; // Visualizer object instance
};
// ----------------------------------------------------------------------------
class visualizerJniStorage {
public:
visualizer_callback_cookie mCallbackData;
visualizerJniStorage() {
}
~visualizerJniStorage() {
}
};
static jint translateError(int code) {
switch(code) {
case NO_ERROR:
return VISUALIZER_SUCCESS;
case ALREADY_EXISTS:
return VISUALIZER_ERROR_ALREADY_EXISTS;
case NO_INIT:
return VISUALIZER_ERROR_NO_INIT;
case BAD_VALUE:
return VISUALIZER_ERROR_BAD_VALUE;
case INVALID_OPERATION:
return VISUALIZER_ERROR_INVALID_OPERATION;
case NO_MEMORY:
return VISUALIZER_ERROR_NO_MEMORY;
case DEAD_OBJECT:
return VISUALIZER_ERROR_DEAD_OBJECT;
default:
return VISUALIZER_ERROR;
}
}
// ----------------------------------------------------------------------------
static void captureCallback(void* user,
uint32_t waveformSize,
uint8_t *waveform,
uint32_t fftSize,
uint8_t *fft,
uint32_t samplingrate) {
int arg1 = 0;
int arg2 = 0;
size_t size;
visualizer_callback_cookie *callbackInfo = (visualizer_callback_cookie *)user;
JNIEnv *env = AndroidRuntime::getJNIEnv();
LOGV("captureCallback: callbackInfo %p, visualizer_ref %p visualizer_class %p",
callbackInfo,
callbackInfo->visualizer_ref,
callbackInfo->visualizer_class);
if (!user || !env) {
LOGW("captureCallback error user %p, env %p", user, env);
return;
}
if (waveformSize != 0 && waveform != NULL) {
jbyteArray jArray = env->NewByteArray(waveformSize);
if (jArray != NULL) {
jbyte *nArray = env->GetByteArrayElements(jArray, NULL);
memcpy(nArray, waveform, waveformSize);
env->ReleaseByteArrayElements(jArray, nArray, 0);
env->CallStaticVoidMethod(
callbackInfo->visualizer_class,
fields.midPostNativeEvent,
callbackInfo->visualizer_ref,
NATIVE_EVENT_PCM_CAPTURE,
samplingrate,
0,
jArray);
env->DeleteLocalRef(jArray);
}
}
if (fftSize != 0 && fft != NULL) {
jbyteArray jArray = env->NewByteArray(fftSize);
if (jArray != NULL) {
jbyte *nArray = env->GetByteArrayElements(jArray, NULL);
memcpy(nArray, fft, fftSize);
env->ReleaseByteArrayElements(jArray, nArray, 0);
env->CallStaticVoidMethod(
callbackInfo->visualizer_class,
fields.midPostNativeEvent,
callbackInfo->visualizer_ref,
NATIVE_EVENT_FFT_CAPTURE,
samplingrate,
0,
jArray);
env->DeleteLocalRef(jArray);
}
}
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
}
static Visualizer *getVisualizer(JNIEnv* env, jobject thiz)
{
Visualizer *v = (Visualizer *)env->GetIntField(
thiz, fields.fidNativeVisualizer);
if (v == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Unable to retrieve Visualizer pointer");
}
return v;
}
// ----------------------------------------------------------------------------
// This function gets some field IDs, which in turn causes class initialization.
// It is called from a static block in Visualizer, which won't run until the
// first time an instance of this class is used.
static void
android_media_visualizer_native_init(JNIEnv *env)
{
LOGV("android_media_visualizer_native_init");
fields.clazzEffect = NULL;
// Get the Visualizer class
jclass clazz = env->FindClass(kClassPathName);
if (clazz == NULL) {
LOGE("Can't find %s", kClassPathName);
return;
}
fields.clazzEffect = (jclass)env->NewGlobalRef(clazz);
// Get the postEvent method
fields.midPostNativeEvent = env->GetStaticMethodID(
fields.clazzEffect,
"postEventFromNative", "(Ljava/lang/Object;IIILjava/lang/Object;)V");
if (fields.midPostNativeEvent == NULL) {
LOGE("Can't find Visualizer.%s", "postEventFromNative");
return;
}
// Get the variables fields
// nativeTrackInJavaObj
fields.fidNativeVisualizer = env->GetFieldID(
fields.clazzEffect,
"mNativeVisualizer", "I");
if (fields.fidNativeVisualizer == NULL) {
LOGE("Can't find Visualizer.%s", "mNativeVisualizer");
return;
}
// fidJniData;
fields.fidJniData = env->GetFieldID(
fields.clazzEffect,
"mJniData", "I");
if (fields.fidJniData == NULL) {
LOGE("Can't find Visualizer.%s", "mJniData");
return;
}
}
static jint
android_media_visualizer_native_setup(JNIEnv *env, jobject thiz, jobject weak_this,
jint sessionId, jintArray jId)
{
LOGV("android_media_visualizer_native_setup");
visualizerJniStorage* lpJniStorage = NULL;
int lStatus = VISUALIZER_ERROR_NO_MEMORY;
Visualizer* lpVisualizer = NULL;
jint* nId = NULL;
lpJniStorage = new visualizerJniStorage();
if (lpJniStorage == NULL) {
LOGE("setup: Error creating JNI Storage");
goto setup_failure;
}
lpJniStorage->mCallbackData.visualizer_class = (jclass)env->NewGlobalRef(fields.clazzEffect);
// we use a weak reference so the Visualizer object can be garbage collected.
lpJniStorage->mCallbackData.visualizer_ref = env->NewGlobalRef(weak_this);
LOGV("setup: lpJniStorage: %p visualizer_ref %p visualizer_class %p, &mCallbackData %p",
lpJniStorage,
lpJniStorage->mCallbackData.visualizer_ref,
lpJniStorage->mCallbackData.visualizer_class,
&lpJniStorage->mCallbackData);
if (jId == NULL) {
LOGE("setup: NULL java array for id pointer");
lStatus = VISUALIZER_ERROR_BAD_VALUE;
goto setup_failure;
}
// create the native Visualizer object
lpVisualizer = new Visualizer(0,
NULL,
NULL,
sessionId);
if (lpVisualizer == NULL) {
LOGE("Error creating Visualizer");
goto setup_failure;
}
lStatus = translateError(lpVisualizer->initCheck());
if (lStatus != VISUALIZER_SUCCESS && lStatus != VISUALIZER_ERROR_ALREADY_EXISTS) {
LOGE("Visualizer initCheck failed %d", lStatus);
goto setup_failure;
}
nId = (jint *) env->GetPrimitiveArrayCritical(jId, NULL);
if (nId == NULL) {
LOGE("setup: Error retrieving id pointer");
lStatus = VISUALIZER_ERROR_BAD_VALUE;
goto setup_failure;
}
nId[0] = lpVisualizer->id();
env->ReleasePrimitiveArrayCritical(jId, nId, 0);
nId = NULL;
env->SetIntField(thiz, fields.fidNativeVisualizer, (int)lpVisualizer);
env->SetIntField(thiz, fields.fidJniData, (int)lpJniStorage);
return VISUALIZER_SUCCESS;
// failures:
setup_failure:
if (nId != NULL) {
env->ReleasePrimitiveArrayCritical(jId, nId, 0);
}
if (lpVisualizer) {
delete lpVisualizer;
}
env->SetIntField(thiz, fields.fidNativeVisualizer, 0);
if (lpJniStorage) {
delete lpJniStorage;
}
env->SetIntField(thiz, fields.fidJniData, 0);
return lStatus;
}
// ----------------------------------------------------------------------------
static void android_media_visualizer_native_finalize(JNIEnv *env, jobject thiz) {
LOGV("android_media_visualizer_native_finalize jobject: %x\n", (int)thiz);
// delete the Visualizer object
Visualizer* lpVisualizer = (Visualizer *)env->GetIntField(
thiz, fields.fidNativeVisualizer);
if (lpVisualizer) {
LOGV("deleting Visualizer: %x\n", (int)lpVisualizer);
delete lpVisualizer;
}
// delete the JNI data
visualizerJniStorage* lpJniStorage = (visualizerJniStorage *)env->GetIntField(
thiz, fields.fidJniData);
if (lpJniStorage) {
LOGV("deleting pJniStorage: %x\n", (int)lpJniStorage);
delete lpJniStorage;
}
}
// ----------------------------------------------------------------------------
static void android_media_visualizer_native_release(JNIEnv *env, jobject thiz) {
// do everything a call to finalize would
android_media_visualizer_native_finalize(env, thiz);
// + reset the native resources in the Java object so any attempt to access
// them after a call to release fails.
env->SetIntField(thiz, fields.fidNativeVisualizer, 0);
env->SetIntField(thiz, fields.fidJniData, 0);
}
static jint
android_media_visualizer_native_setEnabled(JNIEnv *env, jobject thiz, jboolean enabled)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
return translateError(lpVisualizer->setEnabled(enabled));
}
static jboolean
android_media_visualizer_native_getEnabled(JNIEnv *env, jobject thiz)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return false;
}
return (jboolean)lpVisualizer->getEnabled();
}
static jintArray
android_media_visualizer_native_getCaptureSizeRange(JNIEnv *env, jobject thiz)
{
jintArray jRange = env->NewIntArray(2);
jint *nRange = env->GetIntArrayElements(jRange, NULL);
nRange[0] = Visualizer::getMinCaptureSize();
nRange[1] = Visualizer::getMaxCaptureSize();
LOGV("getCaptureSizeRange() min %d max %d", nRange[0], nRange[1]);
env->ReleaseIntArrayElements(jRange, nRange, 0);
return jRange;
}
static jint
android_media_visualizer_native_getMaxCaptureRate(JNIEnv *env, jobject thiz)
{
return Visualizer::getMaxCaptureRate();
}
static jint
android_media_visualizer_native_setCaptureSize(JNIEnv *env, jobject thiz, jint size)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
return translateError(lpVisualizer->setCaptureSize(size));
}
static jint
android_media_visualizer_native_getCaptureSize(JNIEnv *env, jobject thiz)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return -1;
}
return lpVisualizer->getCaptureSize();
}
static jint
android_media_visualizer_native_getSamplingRate(JNIEnv *env, jobject thiz)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return -1;
}
return lpVisualizer->getSamplingRate();
}
static jint
android_media_visualizer_native_getWaveForm(JNIEnv *env, jobject thiz, jbyteArray jWaveform)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
jbyte* nWaveform = (jbyte *) env->GetPrimitiveArrayCritical(jWaveform, NULL);
if (nWaveform == NULL) {
return VISUALIZER_ERROR_NO_MEMORY;
}
jint status = translateError(lpVisualizer->getWaveForm((uint8_t *)nWaveform));
env->ReleasePrimitiveArrayCritical(jWaveform, nWaveform, 0);
return status;
}
static jint
android_media_visualizer_native_getFft(JNIEnv *env, jobject thiz, jbyteArray jFft)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
jbyte* nFft = (jbyte *) env->GetPrimitiveArrayCritical(jFft, NULL);
if (nFft == NULL) {
return VISUALIZER_ERROR_NO_MEMORY;
}
jint status = translateError(lpVisualizer->getFft((uint8_t *)nFft));
env->ReleasePrimitiveArrayCritical(jFft, nFft, 0);
return status;
}
static jint
android_media_setPeriodicCapture(JNIEnv *env, jobject thiz, jint rate, jboolean jWaveform, jboolean jFft)
{
Visualizer* lpVisualizer = getVisualizer(env, thiz);
if (lpVisualizer == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
visualizerJniStorage* lpJniStorage = (visualizerJniStorage *)env->GetIntField(thiz,
fields.fidJniData);
if (lpJniStorage == NULL) {
return VISUALIZER_ERROR_NO_INIT;
}
LOGV("setPeriodicCapture: rate %d, jWaveform %d jFft %d",
rate,
jWaveform,
jFft);
uint32_t flags = Visualizer::CAPTURE_CALL_JAVA;
if (jWaveform) flags |= Visualizer::CAPTURE_WAVEFORM;
if (jFft) flags |= Visualizer::CAPTURE_FFT;
Visualizer::capture_cbk_t cbk = captureCallback;
if (!jWaveform && !jFft) cbk = NULL;
return translateError(lpVisualizer->setCaptureCallBack(cbk,
&lpJniStorage->mCallbackData,
flags,
rate));
}
// ----------------------------------------------------------------------------
// Dalvik VM type signatures
static JNINativeMethod gMethods[] = {
{"native_init", "()V", (void *)android_media_visualizer_native_init},
{"native_setup", "(Ljava/lang/Object;I[I)I",
(void *)android_media_visualizer_native_setup},
{"native_finalize", "()V", (void *)android_media_visualizer_native_finalize},
{"native_release", "()V", (void *)android_media_visualizer_native_release},
{"native_setEnabled", "(Z)I", (void *)android_media_visualizer_native_setEnabled},
{"native_getEnabled", "()Z", (void *)android_media_visualizer_native_getEnabled},
{"getCaptureSizeRange", "()[I", (void *)android_media_visualizer_native_getCaptureSizeRange},
{"getMaxCaptureRate", "()I", (void *)android_media_visualizer_native_getMaxCaptureRate},
{"native_setCaptureSize", "(I)I", (void *)android_media_visualizer_native_setCaptureSize},
{"native_getCaptureSize", "()I", (void *)android_media_visualizer_native_getCaptureSize},
{"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_setPeriodicCapture","(IZZ)I",(void *)android_media_setPeriodicCapture},
};
// ----------------------------------------------------------------------------
int register_android_media_visualizer(JNIEnv *env)
{
return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
}