android_media_AudioEffect.cpp revision 0f7f4ece1b6b73caf608d533d833a8cdc11c8131 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdio.h>
18
19//#define LOG_NDEBUG 0
20#define LOG_TAG "AudioEffects-JNI"
21
22#include <utils/Log.h>
23#include <nativehelper/jni.h>
24#include <nativehelper/JNIHelp.h>
25#include <android_runtime/AndroidRuntime.h>
26#include "media/AudioEffect.h"
27
28using namespace android;
29
30#define AUDIOEFFECT_SUCCESS                      0
31#define AUDIOEFFECT_ERROR                       -1
32#define AUDIOEFFECT_ERROR_ALREADY_EXISTS        -2
33#define AUDIOEFFECT_ERROR_NO_INIT               -3
34#define AUDIOEFFECT_ERROR_BAD_VALUE             -4
35#define AUDIOEFFECT_ERROR_INVALID_OPERATION     -5
36#define AUDIOEFFECT_ERROR_NO_MEMORY             -6
37#define AUDIOEFFECT_ERROR_DEAD_OBJECT           -7
38
39// ----------------------------------------------------------------------------
40static const char* const kClassPathName = "android/media/audiofx/AudioEffect";
41
42struct fields_t {
43    // these fields provide access from C++ to the...
44    jclass    clazzEffect;          // AudioEffect class
45    jmethodID midPostNativeEvent;   // event post callback method
46    jfieldID  fidNativeAudioEffect; // stores in Java the native AudioEffect object
47    jfieldID  fidJniData;           // stores in Java additional resources used by the native AudioEffect
48    jclass    clazzDesc;            // AudioEffect.Descriptor class
49    jmethodID midDescCstor;         // AudioEffect.Descriptor class constructor
50};
51static fields_t fields;
52
53struct effect_callback_cookie {
54    jclass      audioEffect_class;  // AudioEffect class
55    jobject     audioEffect_ref;    // AudioEffect object instance
56 };
57
58// ----------------------------------------------------------------------------
59class AudioEffectJniStorage {
60    public:
61        effect_callback_cookie mCallbackData;
62
63    AudioEffectJniStorage() {
64    }
65
66    ~AudioEffectJniStorage() {
67    }
68
69};
70
71
72static jint translateError(int code) {
73    switch(code) {
74    case NO_ERROR:
75        return AUDIOEFFECT_SUCCESS;
76    case ALREADY_EXISTS:
77        return AUDIOEFFECT_ERROR_ALREADY_EXISTS;
78    case NO_INIT:
79        return AUDIOEFFECT_ERROR_NO_INIT;
80    case BAD_VALUE:
81        return AUDIOEFFECT_ERROR_BAD_VALUE;
82    case INVALID_OPERATION:
83        return AUDIOEFFECT_ERROR_INVALID_OPERATION;
84    case NO_MEMORY:
85        return AUDIOEFFECT_ERROR_NO_MEMORY;
86    case DEAD_OBJECT:
87        return AUDIOEFFECT_ERROR_DEAD_OBJECT;
88    default:
89        return AUDIOEFFECT_ERROR;
90    }
91}
92
93
94// ----------------------------------------------------------------------------
95static void effectCallback(int event, void* user, void *info) {
96
97    effect_param_t *p;
98    int arg1 = 0;
99    int arg2 = 0;
100    jobject obj = NULL;
101    jbyteArray array = NULL;
102    jbyte *bytes;
103    bool param;
104    size_t size;
105
106    effect_callback_cookie *callbackInfo = (effect_callback_cookie *)user;
107    JNIEnv *env = AndroidRuntime::getJNIEnv();
108
109    LOGV("effectCallback: callbackInfo %p, audioEffect_ref %p audioEffect_class %p",
110            callbackInfo,
111            callbackInfo->audioEffect_ref,
112            callbackInfo->audioEffect_class);
113
114    if (!user || !env) {
115        LOGW("effectCallback error user %p, env %p", user, env);
116        return;
117    }
118
119    switch (event) {
120    case AudioEffect::EVENT_CONTROL_STATUS_CHANGED:
121        if (info == 0) {
122            LOGW("EVENT_CONTROL_STATUS_CHANGED info == NULL");
123            goto effectCallback_Exit;
124        }
125        param = *(bool *)info;
126        arg1 = (int)param;
127        LOGV("EVENT_CONTROL_STATUS_CHANGED");
128        break;
129    case AudioEffect::EVENT_ENABLE_STATUS_CHANGED:
130        if (info == 0) {
131            LOGW("EVENT_ENABLE_STATUS_CHANGED info == NULL");
132            goto effectCallback_Exit;
133        }
134        param = *(bool *)info;
135        arg1 = (int)param;
136        LOGV("EVENT_ENABLE_STATUS_CHANGED");
137        break;
138    case AudioEffect::EVENT_PARAMETER_CHANGED:
139        if (info == 0) {
140            LOGW("EVENT_PARAMETER_CHANGED info == NULL");
141            goto effectCallback_Exit;
142        }
143        p = (effect_param_t *)info;
144        if (p->psize == 0 || p->vsize == 0) {
145            goto effectCallback_Exit;
146        }
147        // arg1 contains offset of parameter value from start of byte array
148        arg1 = sizeof(effect_param_t) + ((p->psize - 1) / sizeof(int) + 1) * sizeof(int);
149        size = arg1 + p->vsize;
150        array = env->NewByteArray(size);
151        if (array == NULL) {
152            LOGE("effectCallback: Couldn't allocate byte array for parameter data");
153            goto effectCallback_Exit;
154        }
155        bytes = env->GetByteArrayElements(array, NULL);
156        memcpy(bytes, p, size);
157        env->ReleaseByteArrayElements(array, bytes, 0);
158        obj = array;
159        LOGV("EVENT_PARAMETER_CHANGED");
160       break;
161    case AudioEffect::EVENT_ERROR:
162        LOGW("EVENT_ERROR");
163        break;
164    }
165
166    env->CallStaticVoidMethod(
167        callbackInfo->audioEffect_class,
168        fields.midPostNativeEvent,
169        callbackInfo->audioEffect_ref, event, arg1, arg2, obj);
170
171effectCallback_Exit:
172    if (array) {
173        env->DeleteLocalRef(array);
174    }
175
176    if (env->ExceptionCheck()) {
177        env->ExceptionDescribe();
178        env->ExceptionClear();
179    }
180}
181
182// ----------------------------------------------------------------------------
183// This function gets some field IDs, which in turn causes class initialization.
184// It is called from a static block in AudioEffect, which won't run until the
185// first time an instance of this class is used.
186static void
187android_media_AudioEffect_native_init(JNIEnv *env)
188{
189
190    LOGV("android_media_AudioEffect_native_init");
191
192    fields.clazzEffect = NULL;
193    fields.clazzDesc = NULL;
194
195    // Get the AudioEffect class
196    jclass clazz = env->FindClass(kClassPathName);
197    if (clazz == NULL) {
198        LOGE("Can't find %s", kClassPathName);
199        return;
200    }
201
202    fields.clazzEffect = (jclass)env->NewGlobalRef(clazz);
203
204    // Get the postEvent method
205    fields.midPostNativeEvent = env->GetStaticMethodID(
206            fields.clazzEffect,
207            "postEventFromNative", "(Ljava/lang/Object;IIILjava/lang/Object;)V");
208    if (fields.midPostNativeEvent == NULL) {
209        LOGE("Can't find AudioEffect.%s", "postEventFromNative");
210        return;
211    }
212
213    // Get the variables fields
214    //      nativeTrackInJavaObj
215    fields.fidNativeAudioEffect = env->GetFieldID(
216            fields.clazzEffect,
217            "mNativeAudioEffect", "I");
218    if (fields.fidNativeAudioEffect == NULL) {
219        LOGE("Can't find AudioEffect.%s", "mNativeAudioEffect");
220        return;
221    }
222    //      fidJniData;
223    fields.fidJniData = env->GetFieldID(
224            fields.clazzEffect,
225            "mJniData", "I");
226    if (fields.fidJniData == NULL) {
227        LOGE("Can't find AudioEffect.%s", "mJniData");
228        return;
229    }
230
231    clazz = env->FindClass("android/media/audiofx/AudioEffect$Descriptor");
232    if (clazz == NULL) {
233        LOGE("Can't find android/media/audiofx/AudioEffect$Descriptor class");
234        return;
235    }
236    fields.clazzDesc = (jclass)env->NewGlobalRef(clazz);
237
238    fields.midDescCstor
239            = env->GetMethodID(
240                    fields.clazzDesc,
241                    "<init>",
242                    "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V");
243    if (fields.midDescCstor == NULL) {
244        LOGE("Can't find android/media/audiofx/AudioEffect$Descriptor class constructor");
245        return;
246    }
247}
248
249
250static jint
251android_media_AudioEffect_native_setup(JNIEnv *env, jobject thiz, jobject weak_this,
252        jstring type, jstring uuid, jint priority, jint sessionId, jintArray jId, jobjectArray javadesc)
253{
254    LOGV("android_media_AudioEffect_native_setup");
255    AudioEffectJniStorage* lpJniStorage = NULL;
256    int lStatus = AUDIOEFFECT_ERROR_NO_MEMORY;
257    AudioEffect* lpAudioEffect = NULL;
258    jint* nId = NULL;
259    const char *typeStr = NULL;
260    const char *uuidStr = NULL;
261    effect_descriptor_t desc;
262    jobject jdesc;
263    char str[EFFECT_STRING_LEN_MAX];
264    jstring jdescType;
265    jstring jdescUuid;
266    jstring jdescConnect;
267    jstring jdescName;
268    jstring jdescImplementor;
269
270    if (type != NULL) {
271        typeStr = env->GetStringUTFChars(type, NULL);
272        if (typeStr == NULL) {  // Out of memory
273            jniThrowException(env, "java/lang/RuntimeException", "Out of memory");
274            goto setup_failure;
275        }
276    }
277
278    if (uuid != NULL) {
279        uuidStr = env->GetStringUTFChars(uuid, NULL);
280        if (uuidStr == NULL) {  // Out of memory
281            jniThrowException(env, "java/lang/RuntimeException", "Out of memory");
282            goto setup_failure;
283        }
284    }
285
286    if (typeStr == NULL && uuidStr == NULL) {
287        lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
288        goto setup_failure;
289    }
290
291    lpJniStorage = new AudioEffectJniStorage();
292    if (lpJniStorage == NULL) {
293        LOGE("setup: Error creating JNI Storage");
294        goto setup_failure;
295    }
296
297    lpJniStorage->mCallbackData.audioEffect_class = (jclass)env->NewGlobalRef(fields.clazzEffect);
298    // we use a weak reference so the AudioEffect object can be garbage collected.
299    lpJniStorage->mCallbackData.audioEffect_ref = env->NewGlobalRef(weak_this);
300
301    LOGV("setup: lpJniStorage: %p audioEffect_ref %p audioEffect_class %p, &mCallbackData %p",
302            lpJniStorage,
303            lpJniStorage->mCallbackData.audioEffect_ref,
304            lpJniStorage->mCallbackData.audioEffect_class,
305            &lpJniStorage->mCallbackData);
306
307    if (jId == NULL) {
308        LOGE("setup: NULL java array for id pointer");
309        lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
310        goto setup_failure;
311    }
312
313    // create the native AudioEffect object
314    lpAudioEffect = new AudioEffect(typeStr,
315                                    uuidStr,
316                                    priority,
317                                    effectCallback,
318                                    &lpJniStorage->mCallbackData,
319                                    sessionId,
320                                    0);
321    if (lpAudioEffect == NULL) {
322        LOGE("Error creating AudioEffect");
323        goto setup_failure;
324    }
325
326    lStatus = translateError(lpAudioEffect->initCheck());
327    if (lStatus != AUDIOEFFECT_SUCCESS && lStatus != AUDIOEFFECT_ERROR_ALREADY_EXISTS) {
328        LOGE("AudioEffect initCheck failed %d", lStatus);
329        goto setup_failure;
330    }
331
332    nId = (jint *) env->GetPrimitiveArrayCritical(jId, NULL);
333    if (nId == NULL) {
334        LOGE("setup: Error retrieving id pointer");
335        lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
336        goto setup_failure;
337    }
338    nId[0] = lpAudioEffect->id();
339    env->ReleasePrimitiveArrayCritical(jId, nId, 0);
340    nId = NULL;
341
342    if (typeStr) {
343        env->ReleaseStringUTFChars(type, typeStr);
344        typeStr = NULL;
345    }
346
347    if (uuidStr) {
348        env->ReleaseStringUTFChars(uuid, uuidStr);
349        uuidStr = NULL;
350    }
351
352    // get the effect descriptor
353    desc = lpAudioEffect->descriptor();
354
355    AudioEffect::guidToString(&desc.type, str, EFFECT_STRING_LEN_MAX);
356    jdescType = env->NewStringUTF(str);
357
358    AudioEffect::guidToString(&desc.uuid, str, EFFECT_STRING_LEN_MAX);
359    jdescUuid = env->NewStringUTF(str);
360
361    if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
362        jdescConnect = env->NewStringUTF("Auxiliary");
363    } else {
364        jdescConnect = env->NewStringUTF("Insert");
365    }
366
367    jdescName = env->NewStringUTF(desc.name);
368    jdescImplementor = env->NewStringUTF(desc.implementor);
369
370    jdesc = env->NewObject(fields.clazzDesc,
371                           fields.midDescCstor,
372                           jdescType,
373                           jdescUuid,
374                           jdescConnect,
375                           jdescName,
376                           jdescImplementor);
377    env->DeleteLocalRef(jdescType);
378    env->DeleteLocalRef(jdescUuid);
379    env->DeleteLocalRef(jdescConnect);
380    env->DeleteLocalRef(jdescName);
381    env->DeleteLocalRef(jdescImplementor);
382    if (jdesc == NULL) {
383        LOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
384        goto setup_failure;
385    }
386
387    env->SetObjectArrayElement(javadesc, 0, jdesc);
388
389    env->SetIntField(thiz, fields.fidNativeAudioEffect, (int)lpAudioEffect);
390
391    env->SetIntField(thiz, fields.fidJniData, (int)lpJniStorage);
392
393    return AUDIOEFFECT_SUCCESS;
394
395    // failures:
396setup_failure:
397
398    if (nId != NULL) {
399        env->ReleasePrimitiveArrayCritical(jId, nId, 0);
400    }
401
402    if (lpAudioEffect) {
403        delete lpAudioEffect;
404    }
405    env->SetIntField(thiz, fields.fidNativeAudioEffect, 0);
406
407    if (lpJniStorage) {
408        delete lpJniStorage;
409    }
410    env->SetIntField(thiz, fields.fidJniData, 0);
411
412    if (uuidStr != NULL) {
413        env->ReleaseStringUTFChars(uuid, uuidStr);
414    }
415
416    if (typeStr != NULL) {
417        env->ReleaseStringUTFChars(type, typeStr);
418    }
419
420    return lStatus;
421}
422
423
424// ----------------------------------------------------------------------------
425static void android_media_AudioEffect_native_finalize(JNIEnv *env,  jobject thiz) {
426    LOGV("android_media_AudioEffect_native_finalize jobject: %x\n", (int)thiz);
427
428    // delete the AudioEffect object
429    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
430        thiz, fields.fidNativeAudioEffect);
431    if (lpAudioEffect) {
432        LOGV("deleting AudioEffect: %x\n", (int)lpAudioEffect);
433        delete lpAudioEffect;
434    }
435
436    // delete the JNI data
437    AudioEffectJniStorage* lpJniStorage = (AudioEffectJniStorage *)env->GetIntField(
438        thiz, fields.fidJniData);
439    if (lpJniStorage) {
440        LOGV("deleting pJniStorage: %x\n", (int)lpJniStorage);
441        delete lpJniStorage;
442    }
443}
444
445// ----------------------------------------------------------------------------
446static void android_media_AudioEffect_native_release(JNIEnv *env,  jobject thiz) {
447
448    // do everything a call to finalize would
449    android_media_AudioEffect_native_finalize(env, thiz);
450    // + reset the native resources in the Java object so any attempt to access
451    // them after a call to release fails.
452    env->SetIntField(thiz, fields.fidNativeAudioEffect, 0);
453    env->SetIntField(thiz, fields.fidJniData, 0);
454}
455
456static jint
457android_media_AudioEffect_native_setEnabled(JNIEnv *env, jobject thiz, jboolean enabled)
458{
459    // retrieve the AudioEffect object
460    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
461        thiz, fields.fidNativeAudioEffect);
462
463    if (lpAudioEffect == NULL) {
464        jniThrowException(env, "java/lang/IllegalStateException",
465            "Unable to retrieve AudioEffect pointer for enable()");
466        return AUDIOEFFECT_ERROR_NO_INIT;
467    }
468
469    return translateError(lpAudioEffect->setEnabled(enabled));
470}
471
472static jboolean
473android_media_AudioEffect_native_getEnabled(JNIEnv *env, jobject thiz)
474{
475    // retrieve the AudioEffect object
476    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
477        thiz, fields.fidNativeAudioEffect);
478
479    if (lpAudioEffect == NULL) {
480        jniThrowException(env, "java/lang/IllegalStateException",
481            "Unable to retrieve AudioEffect pointer for getEnabled()");
482        return false;
483    }
484
485    return (jboolean)lpAudioEffect->getEnabled();
486}
487
488
489static jboolean
490android_media_AudioEffect_native_hasControl(JNIEnv *env, jobject thiz)
491{
492    // retrieve the AudioEffect object
493    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
494        thiz, fields.fidNativeAudioEffect);
495
496    if (lpAudioEffect == NULL) {
497        jniThrowException(env, "java/lang/IllegalStateException",
498            "Unable to retrieve AudioEffect pointer for hasControl()");
499        return false;
500    }
501
502    if (lpAudioEffect->initCheck() == NO_ERROR) {
503        return true;
504    } else {
505        return false;
506    }
507}
508
509static jint android_media_AudioEffect_native_setParameter(JNIEnv *env,
510        jobject thiz, int psize, jbyteArray pJavaParam, int vsize,
511        jbyteArray pJavaValue) {
512    // retrieve the AudioEffect object
513    jbyte* lpValue = NULL;
514    jbyte* lpParam = NULL;
515    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
516    effect_param_t *p;
517    int voffset;
518
519    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
520            fields.fidNativeAudioEffect);
521
522    if (lpAudioEffect == NULL) {
523        jniThrowException(env, "java/lang/IllegalStateException",
524                "Unable to retrieve AudioEffect pointer for setParameter()");
525        return AUDIOEFFECT_ERROR_NO_INIT;
526    }
527
528    if (psize == 0 || vsize == 0 || pJavaParam == NULL || pJavaValue == NULL) {
529        return AUDIOEFFECT_ERROR_BAD_VALUE;
530    }
531
532    // get the pointer for the param from the java array
533    lpParam = (jbyte *) env->GetPrimitiveArrayCritical(pJavaParam, NULL);
534    if (lpParam == NULL) {
535        LOGE("setParameter: Error retrieving param pointer");
536        goto setParameter_Exit;
537    }
538
539    // get the pointer for the value from the java array
540    lpValue = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValue, NULL);
541    if (lpValue == NULL) {
542        LOGE("setParameter: Error retrieving value pointer");
543        goto setParameter_Exit;
544    }
545
546    voffset = ((psize - 1) / sizeof(int) + 1) * sizeof(int);
547    p = (effect_param_t *) malloc(sizeof(effect_param_t) + voffset + vsize);
548    memcpy(p->data, lpParam, psize);
549    p->psize = psize;
550    memcpy(p->data + voffset, lpValue, vsize);
551    p->vsize = vsize;
552
553    lStatus = lpAudioEffect->setParameter(p);
554    if (lStatus == NO_ERROR) {
555        lStatus = p->status;
556    }
557
558    free(p);
559
560setParameter_Exit:
561
562    if (lpParam != NULL) {
563        env->ReleasePrimitiveArrayCritical(pJavaParam, lpParam, 0);
564    }
565    if (lpValue != NULL) {
566        env->ReleasePrimitiveArrayCritical(pJavaValue, lpValue, 0);
567    }
568    return translateError(lStatus);
569}
570
571static jint
572android_media_AudioEffect_native_getParameter(JNIEnv *env,
573        jobject thiz, jint psize, jbyteArray pJavaParam,
574        jint vsize, jbyteArray pJavaValue) {
575    // retrieve the AudioEffect object
576    jbyte* lpParam = NULL;
577    jbyte* lpValue = NULL;
578    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
579    effect_param_t *p;
580    int voffset;
581
582    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
583            fields.fidNativeAudioEffect);
584
585    if (lpAudioEffect == NULL) {
586        jniThrowException(env, "java/lang/IllegalStateException",
587                "Unable to retrieve AudioEffect pointer for getParameter()");
588        return AUDIOEFFECT_ERROR_NO_INIT;
589    }
590
591    if (psize == 0 || vsize == 0 || pJavaParam == NULL || pJavaValue == NULL) {
592        return AUDIOEFFECT_ERROR_BAD_VALUE;
593    }
594
595    // get the pointer for the param from the java array
596    lpParam = (jbyte *) env->GetPrimitiveArrayCritical(pJavaParam, NULL);
597    if (lpParam == NULL) {
598        LOGE("getParameter: Error retrieving param pointer");
599        goto getParameter_Exit;
600    }
601
602    // get the pointer for the value from the java array
603    lpValue = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValue, NULL);
604    if (lpValue == NULL) {
605        LOGE("getParameter: Error retrieving value pointer");
606        goto getParameter_Exit;
607    }
608
609    voffset = ((psize - 1) / sizeof(int) + 1) * sizeof(int);
610    p = (effect_param_t *) malloc(sizeof(effect_param_t) + voffset + vsize);
611    memcpy(p->data, lpParam, psize);
612    p->psize = psize;
613    p->vsize = vsize;
614
615    lStatus = lpAudioEffect->getParameter(p);
616    if (lStatus == NO_ERROR) {
617        lStatus = p->status;
618        if (lStatus == NO_ERROR) {
619            memcpy(lpValue, p->data + voffset, p->vsize);
620            vsize = p->vsize;
621        }
622    }
623
624    free(p);
625
626getParameter_Exit:
627
628    if (lpParam != NULL) {
629        env->ReleasePrimitiveArrayCritical(pJavaParam, lpParam, 0);
630    }
631    if (lpValue != NULL) {
632        env->ReleasePrimitiveArrayCritical(pJavaValue, lpValue, 0);
633    }
634
635    if (lStatus == NO_ERROR) {
636        return vsize;
637    }
638    return translateError(lStatus);
639}
640
641static jint android_media_AudioEffect_native_command(JNIEnv *env, jobject thiz,
642        jint cmdCode, jint cmdSize, jbyteArray jCmdData, jint replySize,
643        jbyteArray jReplyData) {
644    jbyte* pCmdData = NULL;
645    jbyte* pReplyData = NULL;
646    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
647
648    // retrieve the AudioEffect object
649    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
650            fields.fidNativeAudioEffect);
651
652    if (lpAudioEffect == NULL) {
653        jniThrowException(env, "java/lang/IllegalStateException",
654                "Unable to retrieve AudioEffect pointer for setParameter()");
655        return AUDIOEFFECT_ERROR_NO_INIT;
656    }
657
658    if ((cmdSize != 0 && jCmdData == NULL) || (replySize != 0 && jReplyData == NULL)) {
659        return AUDIOEFFECT_ERROR_BAD_VALUE;
660    }
661
662    // get the pointer for the command from the java array
663    if (cmdSize != 0) {
664        pCmdData = (jbyte *) env->GetPrimitiveArrayCritical(jCmdData, NULL);
665        if (pCmdData == NULL) {
666            LOGE("setParameter: Error retrieving command pointer");
667            goto command_Exit;
668        }
669    }
670
671    // get the pointer for the reply from the java array
672    if (replySize != 0 && jReplyData != NULL) {
673        pReplyData = (jbyte *) env->GetPrimitiveArrayCritical(jReplyData, NULL);
674        if (pReplyData == NULL) {
675            LOGE("setParameter: Error retrieving reply pointer");
676            goto command_Exit;
677        }
678    }
679
680    lStatus = translateError(lpAudioEffect->command((uint32_t)cmdCode,
681                                                    (uint32_t)cmdSize,
682                                                    pCmdData,
683                                                    (uint32_t *)&replySize,
684                                                    pReplyData));
685
686command_Exit:
687
688    if (pCmdData != NULL) {
689        env->ReleasePrimitiveArrayCritical(jCmdData, pCmdData, 0);
690    }
691    if (pReplyData != NULL) {
692        env->ReleasePrimitiveArrayCritical(jReplyData, pReplyData, 0);
693    }
694
695    if (lStatus == NO_ERROR) {
696        return replySize;
697    }
698    return lStatus;
699}
700
701static jobjectArray
702android_media_AudioEffect_native_queryEffects(JNIEnv *env, jclass clazz)
703{
704    effect_descriptor_t desc;
705    char str[EFFECT_STRING_LEN_MAX];
706    uint32_t numEffects;
707    uint32_t i = 0;
708    jstring jdescType;
709    jstring jdescUuid;
710    jstring jdescConnect;
711    jstring jdescName;
712    jstring jdescImplementor;
713    jobject jdesc;
714
715    AudioEffect::queryNumberEffects(&numEffects);
716    jobjectArray ret = env->NewObjectArray(numEffects, fields.clazzDesc, NULL);
717    if (ret == NULL) {
718        return ret;
719    }
720
721    LOGV("queryEffects() numEffects: %d", numEffects);
722
723    for (i = 0; i < numEffects; i++) {
724        if (AudioEffect::queryEffect(i, &desc) != NO_ERROR) {
725            goto queryEffects_failure;
726        }
727
728        if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
729            jdescConnect = env->NewStringUTF("Auxiliary");
730        } else if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT) {
731            jdescConnect = env->NewStringUTF("Insert");
732        } else if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC) {
733            jdescConnect = env->NewStringUTF("Pre Processing");
734        } else {
735            continue;
736        }
737
738        AudioEffect::guidToString(&desc.type, str, EFFECT_STRING_LEN_MAX);
739        jdescType = env->NewStringUTF(str);
740
741        AudioEffect::guidToString(&desc.uuid, str, EFFECT_STRING_LEN_MAX);
742        jdescUuid = env->NewStringUTF(str);
743
744        jdescName = env->NewStringUTF(desc.name);
745        jdescImplementor = env->NewStringUTF(desc.implementor);
746
747        jdesc = env->NewObject(fields.clazzDesc,
748                               fields.midDescCstor,
749                               jdescType,
750                               jdescUuid,
751                               jdescConnect,
752                               jdescName,
753                               jdescImplementor);
754        env->DeleteLocalRef(jdescType);
755        env->DeleteLocalRef(jdescUuid);
756        env->DeleteLocalRef(jdescConnect);
757        env->DeleteLocalRef(jdescName);
758        env->DeleteLocalRef(jdescImplementor);
759        if (jdesc == NULL) {
760            LOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
761            goto queryEffects_failure;
762        }
763
764        env->SetObjectArrayElement(ret, i, jdesc);
765   }
766
767    return ret;
768
769queryEffects_failure:
770
771    if (ret != NULL) {
772        env->DeleteLocalRef(ret);
773    }
774    return NULL;
775
776}
777
778
779
780static jobjectArray
781android_media_AudioEffect_native_queryPreProcessings(JNIEnv *env, jclass clazz, jint audioSession)
782{
783    // kDefaultNumEffects is a "reasonable" value ensuring that only one query will be enough on
784    // most devices to get all active audio pre processing on a given session.
785    static const uint32_t kDefaultNumEffects = 5;
786
787    effect_descriptor_t *descriptors = new effect_descriptor_t[kDefaultNumEffects];
788    uint32_t numEffects = kDefaultNumEffects;
789
790    status_t status = AudioEffect::queryDefaultPreProcessing(audioSession,
791                                           descriptors,
792                                           &numEffects);
793    if ((status != NO_ERROR && status != NO_MEMORY) ||
794            numEffects == 0) {
795        delete[] descriptors;
796        return NULL;
797    }
798    if (status == NO_MEMORY) {
799        delete [] descriptors;
800        descriptors = new effect_descriptor_t[numEffects];
801        status = AudioEffect::queryDefaultPreProcessing(audioSession,
802                                               descriptors,
803                                               &numEffects);
804    }
805    if (status != NO_ERROR || numEffects == 0) {
806        delete[] descriptors;
807        return NULL;
808    }
809    LOGV("queryDefaultPreProcessing() got %d effects", numEffects);
810
811    jobjectArray ret = env->NewObjectArray(numEffects, fields.clazzDesc, NULL);
812    if (ret == NULL) {
813        delete[] descriptors;
814        return ret;
815    }
816
817    char str[EFFECT_STRING_LEN_MAX];
818    jstring jdescType;
819    jstring jdescUuid;
820    jstring jdescConnect;
821    jstring jdescName;
822    jstring jdescImplementor;
823    jobject jdesc;
824
825    for (uint32_t i = 0; i < numEffects; i++) {
826
827        AudioEffect::guidToString(&descriptors[i].type, str, EFFECT_STRING_LEN_MAX);
828        jdescType = env->NewStringUTF(str);
829        AudioEffect::guidToString(&descriptors[i].uuid, str, EFFECT_STRING_LEN_MAX);
830        jdescUuid = env->NewStringUTF(str);
831        jdescConnect = env->NewStringUTF("Pre Processing");
832        jdescName = env->NewStringUTF(descriptors[i].name);
833        jdescImplementor = env->NewStringUTF(descriptors[i].implementor);
834
835        jdesc = env->NewObject(fields.clazzDesc,
836                               fields.midDescCstor,
837                               jdescType,
838                               jdescUuid,
839                               jdescConnect,
840                               jdescName,
841                               jdescImplementor);
842        env->DeleteLocalRef(jdescType);
843        env->DeleteLocalRef(jdescUuid);
844        env->DeleteLocalRef(jdescConnect);
845        env->DeleteLocalRef(jdescName);
846        env->DeleteLocalRef(jdescImplementor);
847        if (jdesc == NULL) {
848            LOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
849            env->DeleteLocalRef(ret);
850            return NULL;;
851        }
852
853        env->SetObjectArrayElement(ret, i, jdesc);
854   }
855
856   return ret;
857}
858
859// ----------------------------------------------------------------------------
860
861// Dalvik VM type signatures
862static JNINativeMethod gMethods[] = {
863    {"native_init",          "()V",      (void *)android_media_AudioEffect_native_init},
864    {"native_setup",         "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;II[I[Ljava/lang/Object;)I",
865                                         (void *)android_media_AudioEffect_native_setup},
866    {"native_finalize",      "()V",      (void *)android_media_AudioEffect_native_finalize},
867    {"native_release",       "()V",      (void *)android_media_AudioEffect_native_release},
868    {"native_setEnabled",    "(Z)I",      (void *)android_media_AudioEffect_native_setEnabled},
869    {"native_getEnabled",    "()Z",      (void *)android_media_AudioEffect_native_getEnabled},
870    {"native_hasControl",    "()Z",      (void *)android_media_AudioEffect_native_hasControl},
871    {"native_setParameter",  "(I[BI[B)I",  (void *)android_media_AudioEffect_native_setParameter},
872    {"native_getParameter",  "(I[BI[B)I",  (void *)android_media_AudioEffect_native_getParameter},
873    {"native_command",       "(II[BI[B)I", (void *)android_media_AudioEffect_native_command},
874    {"native_query_effects", "()[Ljava/lang/Object;", (void *)android_media_AudioEffect_native_queryEffects},
875    {"native_query_pre_processing", "(I)[Ljava/lang/Object;",
876            (void *)android_media_AudioEffect_native_queryPreProcessings},
877};
878
879
880// ----------------------------------------------------------------------------
881
882extern int register_android_media_visualizer(JNIEnv *env);
883
884int register_android_media_AudioEffect(JNIEnv *env)
885{
886    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
887}
888
889jint JNI_OnLoad(JavaVM* vm, void* reserved)
890{
891
892    JNIEnv* env = NULL;
893    jint result = -1;
894
895    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
896        LOGE("ERROR: GetEnv failed\n");
897        goto bail;
898    }
899    assert(env != NULL);
900
901    if (register_android_media_AudioEffect(env) < 0) {
902        LOGE("ERROR: AudioEffect native registration failed\n");
903        goto bail;
904    }
905
906    if (register_android_media_visualizer(env) < 0) {
907        LOGE("ERROR: Visualizer native registration failed\n");
908        goto bail;
909    }
910
911    /* success -- return valid version number */
912    result = JNI_VERSION_1_4;
913
914bail:
915    return result;
916}
917
918