android_media_AudioEffect.cpp revision 4526f0de0a5698832719f16158bed57ad209d4f2 
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    ALOGV("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        ALOGW("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            ALOGW("EVENT_CONTROL_STATUS_CHANGED info == NULL");
123            goto effectCallback_Exit;
124        }
125        param = *(bool *)info;
126        arg1 = (int)param;
127        ALOGV("EVENT_CONTROL_STATUS_CHANGED");
128        break;
129    case AudioEffect::EVENT_ENABLE_STATUS_CHANGED:
130        if (info == 0) {
131            ALOGW("EVENT_ENABLE_STATUS_CHANGED info == NULL");
132            goto effectCallback_Exit;
133        }
134        param = *(bool *)info;
135        arg1 = (int)param;
136        ALOGV("EVENT_ENABLE_STATUS_CHANGED");
137        break;
138    case AudioEffect::EVENT_PARAMETER_CHANGED:
139        if (info == 0) {
140            ALOGW("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            ALOGE("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        ALOGV("EVENT_PARAMETER_CHANGED");
160       break;
161    case AudioEffect::EVENT_ERROR:
162        ALOGW("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    ALOGV("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        ALOGE("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        ALOGE("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        ALOGE("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        ALOGE("Can't find AudioEffect.%s", "mJniData");
228        return;
229    }
230
231    clazz = env->FindClass("android/media/audiofx/AudioEffect$Descriptor");
232    if (clazz == NULL) {
233        ALOGE("Can't find android/media/audiofx/AudioEffect$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        ALOGE("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    ALOGV("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        ALOGE("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    ALOGV("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        ALOGE("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        ALOGE("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        ALOGE("AudioEffect initCheck failed %d", lStatus);
329        goto setup_failure;
330    }
331
332    nId = (jint *) env->GetPrimitiveArrayCritical(jId, NULL);
333    if (nId == NULL) {
334        ALOGE("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 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC) {
364        jdescConnect = env->NewStringUTF("Pre Processing");
365    } else {
366        jdescConnect = env->NewStringUTF("Insert");
367    }
368
369    jdescName = env->NewStringUTF(desc.name);
370    jdescImplementor = env->NewStringUTF(desc.implementor);
371
372    jdesc = env->NewObject(fields.clazzDesc,
373                           fields.midDescCstor,
374                           jdescType,
375                           jdescUuid,
376                           jdescConnect,
377                           jdescName,
378                           jdescImplementor);
379    env->DeleteLocalRef(jdescType);
380    env->DeleteLocalRef(jdescUuid);
381    env->DeleteLocalRef(jdescConnect);
382    env->DeleteLocalRef(jdescName);
383    env->DeleteLocalRef(jdescImplementor);
384    if (jdesc == NULL) {
385        ALOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
386        goto setup_failure;
387    }
388
389    env->SetObjectArrayElement(javadesc, 0, jdesc);
390
391    env->SetIntField(thiz, fields.fidNativeAudioEffect, (int)lpAudioEffect);
392
393    env->SetIntField(thiz, fields.fidJniData, (int)lpJniStorage);
394
395    return AUDIOEFFECT_SUCCESS;
396
397    // failures:
398setup_failure:
399
400    if (nId != NULL) {
401        env->ReleasePrimitiveArrayCritical(jId, nId, 0);
402    }
403
404    if (lpAudioEffect) {
405        delete lpAudioEffect;
406    }
407    env->SetIntField(thiz, fields.fidNativeAudioEffect, 0);
408
409    if (lpJniStorage) {
410        delete lpJniStorage;
411    }
412    env->SetIntField(thiz, fields.fidJniData, 0);
413
414    if (uuidStr != NULL) {
415        env->ReleaseStringUTFChars(uuid, uuidStr);
416    }
417
418    if (typeStr != NULL) {
419        env->ReleaseStringUTFChars(type, typeStr);
420    }
421
422    return lStatus;
423}
424
425
426// ----------------------------------------------------------------------------
427static void android_media_AudioEffect_native_finalize(JNIEnv *env,  jobject thiz) {
428    ALOGV("android_media_AudioEffect_native_finalize jobject: %x\n", (int)thiz);
429
430    // delete the AudioEffect object
431    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
432        thiz, fields.fidNativeAudioEffect);
433    if (lpAudioEffect) {
434        ALOGV("deleting AudioEffect: %x\n", (int)lpAudioEffect);
435        delete lpAudioEffect;
436    }
437
438    // delete the JNI data
439    AudioEffectJniStorage* lpJniStorage = (AudioEffectJniStorage *)env->GetIntField(
440        thiz, fields.fidJniData);
441    if (lpJniStorage) {
442        ALOGV("deleting pJniStorage: %x\n", (int)lpJniStorage);
443        delete lpJniStorage;
444    }
445}
446
447// ----------------------------------------------------------------------------
448static void android_media_AudioEffect_native_release(JNIEnv *env,  jobject thiz) {
449
450    // do everything a call to finalize would
451    android_media_AudioEffect_native_finalize(env, thiz);
452    // + reset the native resources in the Java object so any attempt to access
453    // them after a call to release fails.
454    env->SetIntField(thiz, fields.fidNativeAudioEffect, 0);
455    env->SetIntField(thiz, fields.fidJniData, 0);
456}
457
458static jint
459android_media_AudioEffect_native_setEnabled(JNIEnv *env, jobject thiz, jboolean enabled)
460{
461    // retrieve the AudioEffect object
462    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
463        thiz, fields.fidNativeAudioEffect);
464
465    if (lpAudioEffect == NULL) {
466        jniThrowException(env, "java/lang/IllegalStateException",
467            "Unable to retrieve AudioEffect pointer for enable()");
468        return AUDIOEFFECT_ERROR_NO_INIT;
469    }
470
471    return translateError(lpAudioEffect->setEnabled(enabled));
472}
473
474static jboolean
475android_media_AudioEffect_native_getEnabled(JNIEnv *env, jobject thiz)
476{
477    // retrieve the AudioEffect object
478    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
479        thiz, fields.fidNativeAudioEffect);
480
481    if (lpAudioEffect == NULL) {
482        jniThrowException(env, "java/lang/IllegalStateException",
483            "Unable to retrieve AudioEffect pointer for getEnabled()");
484        return false;
485    }
486
487    return (jboolean)lpAudioEffect->getEnabled();
488}
489
490
491static jboolean
492android_media_AudioEffect_native_hasControl(JNIEnv *env, jobject thiz)
493{
494    // retrieve the AudioEffect object
495    AudioEffect* lpAudioEffect = (AudioEffect *)env->GetIntField(
496        thiz, fields.fidNativeAudioEffect);
497
498    if (lpAudioEffect == NULL) {
499        jniThrowException(env, "java/lang/IllegalStateException",
500            "Unable to retrieve AudioEffect pointer for hasControl()");
501        return false;
502    }
503
504    if (lpAudioEffect->initCheck() == NO_ERROR) {
505        return true;
506    } else {
507        return false;
508    }
509}
510
511static jint android_media_AudioEffect_native_setParameter(JNIEnv *env,
512        jobject thiz, int psize, jbyteArray pJavaParam, int vsize,
513        jbyteArray pJavaValue) {
514    // retrieve the AudioEffect object
515    jbyte* lpValue = NULL;
516    jbyte* lpParam = NULL;
517    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
518    effect_param_t *p;
519    int voffset;
520
521    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
522            fields.fidNativeAudioEffect);
523
524    if (lpAudioEffect == NULL) {
525        jniThrowException(env, "java/lang/IllegalStateException",
526                "Unable to retrieve AudioEffect pointer for setParameter()");
527        return AUDIOEFFECT_ERROR_NO_INIT;
528    }
529
530    if (psize == 0 || vsize == 0 || pJavaParam == NULL || pJavaValue == NULL) {
531        return AUDIOEFFECT_ERROR_BAD_VALUE;
532    }
533
534    // get the pointer for the param from the java array
535    lpParam = (jbyte *) env->GetPrimitiveArrayCritical(pJavaParam, NULL);
536    if (lpParam == NULL) {
537        ALOGE("setParameter: Error retrieving param pointer");
538        goto setParameter_Exit;
539    }
540
541    // get the pointer for the value from the java array
542    lpValue = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValue, NULL);
543    if (lpValue == NULL) {
544        ALOGE("setParameter: Error retrieving value pointer");
545        goto setParameter_Exit;
546    }
547
548    voffset = ((psize - 1) / sizeof(int) + 1) * sizeof(int);
549    p = (effect_param_t *) malloc(sizeof(effect_param_t) + voffset + vsize);
550    memcpy(p->data, lpParam, psize);
551    p->psize = psize;
552    memcpy(p->data + voffset, lpValue, vsize);
553    p->vsize = vsize;
554
555    lStatus = lpAudioEffect->setParameter(p);
556    if (lStatus == NO_ERROR) {
557        lStatus = p->status;
558    }
559
560    free(p);
561
562setParameter_Exit:
563
564    if (lpParam != NULL) {
565        env->ReleasePrimitiveArrayCritical(pJavaParam, lpParam, 0);
566    }
567    if (lpValue != NULL) {
568        env->ReleasePrimitiveArrayCritical(pJavaValue, lpValue, 0);
569    }
570    return translateError(lStatus);
571}
572
573static jint
574android_media_AudioEffect_native_getParameter(JNIEnv *env,
575        jobject thiz, jint psize, jbyteArray pJavaParam,
576        jint vsize, jbyteArray pJavaValue) {
577    // retrieve the AudioEffect object
578    jbyte* lpParam = NULL;
579    jbyte* lpValue = NULL;
580    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
581    effect_param_t *p;
582    int voffset;
583
584    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
585            fields.fidNativeAudioEffect);
586
587    if (lpAudioEffect == NULL) {
588        jniThrowException(env, "java/lang/IllegalStateException",
589                "Unable to retrieve AudioEffect pointer for getParameter()");
590        return AUDIOEFFECT_ERROR_NO_INIT;
591    }
592
593    if (psize == 0 || vsize == 0 || pJavaParam == NULL || pJavaValue == NULL) {
594        return AUDIOEFFECT_ERROR_BAD_VALUE;
595    }
596
597    // get the pointer for the param from the java array
598    lpParam = (jbyte *) env->GetPrimitiveArrayCritical(pJavaParam, NULL);
599    if (lpParam == NULL) {
600        ALOGE("getParameter: Error retrieving param pointer");
601        goto getParameter_Exit;
602    }
603
604    // get the pointer for the value from the java array
605    lpValue = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValue, NULL);
606    if (lpValue == NULL) {
607        ALOGE("getParameter: Error retrieving value pointer");
608        goto getParameter_Exit;
609    }
610
611    voffset = ((psize - 1) / sizeof(int) + 1) * sizeof(int);
612    p = (effect_param_t *) malloc(sizeof(effect_param_t) + voffset + vsize);
613    memcpy(p->data, lpParam, psize);
614    p->psize = psize;
615    p->vsize = vsize;
616
617    lStatus = lpAudioEffect->getParameter(p);
618    if (lStatus == NO_ERROR) {
619        lStatus = p->status;
620        if (lStatus == NO_ERROR) {
621            memcpy(lpValue, p->data + voffset, p->vsize);
622            vsize = p->vsize;
623        }
624    }
625
626    free(p);
627
628getParameter_Exit:
629
630    if (lpParam != NULL) {
631        env->ReleasePrimitiveArrayCritical(pJavaParam, lpParam, 0);
632    }
633    if (lpValue != NULL) {
634        env->ReleasePrimitiveArrayCritical(pJavaValue, lpValue, 0);
635    }
636
637    if (lStatus == NO_ERROR) {
638        return vsize;
639    }
640    return translateError(lStatus);
641}
642
643static jint android_media_AudioEffect_native_command(JNIEnv *env, jobject thiz,
644        jint cmdCode, jint cmdSize, jbyteArray jCmdData, jint replySize,
645        jbyteArray jReplyData) {
646    jbyte* pCmdData = NULL;
647    jbyte* pReplyData = NULL;
648    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
649
650    // retrieve the AudioEffect object
651    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
652            fields.fidNativeAudioEffect);
653
654    if (lpAudioEffect == NULL) {
655        jniThrowException(env, "java/lang/IllegalStateException",
656                "Unable to retrieve AudioEffect pointer for setParameter()");
657        return AUDIOEFFECT_ERROR_NO_INIT;
658    }
659
660    if ((cmdSize != 0 && jCmdData == NULL) || (replySize != 0 && jReplyData == NULL)) {
661        return AUDIOEFFECT_ERROR_BAD_VALUE;
662    }
663
664    // get the pointer for the command from the java array
665    if (cmdSize != 0) {
666        pCmdData = (jbyte *) env->GetPrimitiveArrayCritical(jCmdData, NULL);
667        if (pCmdData == NULL) {
668            ALOGE("setParameter: Error retrieving command pointer");
669            goto command_Exit;
670        }
671    }
672
673    // get the pointer for the reply from the java array
674    if (replySize != 0 && jReplyData != NULL) {
675        pReplyData = (jbyte *) env->GetPrimitiveArrayCritical(jReplyData, NULL);
676        if (pReplyData == NULL) {
677            ALOGE("setParameter: Error retrieving reply pointer");
678            goto command_Exit;
679        }
680    }
681
682    lStatus = translateError(lpAudioEffect->command((uint32_t)cmdCode,
683                                                    (uint32_t)cmdSize,
684                                                    pCmdData,
685                                                    (uint32_t *)&replySize,
686                                                    pReplyData));
687
688command_Exit:
689
690    if (pCmdData != NULL) {
691        env->ReleasePrimitiveArrayCritical(jCmdData, pCmdData, 0);
692    }
693    if (pReplyData != NULL) {
694        env->ReleasePrimitiveArrayCritical(jReplyData, pReplyData, 0);
695    }
696
697    if (lStatus == NO_ERROR) {
698        return replySize;
699    }
700    return lStatus;
701}
702
703static jobjectArray
704android_media_AudioEffect_native_queryEffects(JNIEnv *env, jclass clazz)
705{
706    effect_descriptor_t desc;
707    char str[EFFECT_STRING_LEN_MAX];
708    uint32_t numEffects = 0;
709    uint32_t i = 0;
710    jstring jdescType;
711    jstring jdescUuid;
712    jstring jdescConnect;
713    jstring jdescName;
714    jstring jdescImplementor;
715    jobject jdesc;
716
717    if (AudioEffect::queryNumberEffects(&numEffects) != NO_ERROR) {
718        return NULL;
719    }
720
721    jobjectArray ret = env->NewObjectArray(numEffects, fields.clazzDesc, NULL);
722    if (ret == NULL) {
723        return ret;
724    }
725
726    ALOGV("queryEffects() numEffects: %d", numEffects);
727
728    for (i = 0; i < numEffects; i++) {
729        if (AudioEffect::queryEffect(i, &desc) != NO_ERROR) {
730            goto queryEffects_failure;
731        }
732
733        if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
734            jdescConnect = env->NewStringUTF("Auxiliary");
735        } else if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT) {
736            jdescConnect = env->NewStringUTF("Insert");
737        } else if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC) {
738            jdescConnect = env->NewStringUTF("Pre Processing");
739        } else {
740            continue;
741        }
742
743        AudioEffect::guidToString(&desc.type, str, EFFECT_STRING_LEN_MAX);
744        jdescType = env->NewStringUTF(str);
745
746        AudioEffect::guidToString(&desc.uuid, str, EFFECT_STRING_LEN_MAX);
747        jdescUuid = env->NewStringUTF(str);
748
749        jdescName = env->NewStringUTF(desc.name);
750        jdescImplementor = env->NewStringUTF(desc.implementor);
751
752        jdesc = env->NewObject(fields.clazzDesc,
753                               fields.midDescCstor,
754                               jdescType,
755                               jdescUuid,
756                               jdescConnect,
757                               jdescName,
758                               jdescImplementor);
759        env->DeleteLocalRef(jdescType);
760        env->DeleteLocalRef(jdescUuid);
761        env->DeleteLocalRef(jdescConnect);
762        env->DeleteLocalRef(jdescName);
763        env->DeleteLocalRef(jdescImplementor);
764        if (jdesc == NULL) {
765            ALOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
766            goto queryEffects_failure;
767        }
768
769        env->SetObjectArrayElement(ret, i, jdesc);
770   }
771
772    return ret;
773
774queryEffects_failure:
775
776    if (ret != NULL) {
777        env->DeleteLocalRef(ret);
778    }
779    return NULL;
780
781}
782
783
784
785static jobjectArray
786android_media_AudioEffect_native_queryPreProcessings(JNIEnv *env, jclass clazz, jint audioSession)
787{
788    // kDefaultNumEffects is a "reasonable" value ensuring that only one query will be enough on
789    // most devices to get all active audio pre processing on a given session.
790    static const uint32_t kDefaultNumEffects = 5;
791
792    effect_descriptor_t *descriptors = new effect_descriptor_t[kDefaultNumEffects];
793    uint32_t numEffects = kDefaultNumEffects;
794
795    status_t status = AudioEffect::queryDefaultPreProcessing(audioSession,
796                                           descriptors,
797                                           &numEffects);
798    if ((status != NO_ERROR && status != NO_MEMORY) ||
799            numEffects == 0) {
800        delete[] descriptors;
801        return NULL;
802    }
803    if (status == NO_MEMORY) {
804        delete [] descriptors;
805        descriptors = new effect_descriptor_t[numEffects];
806        status = AudioEffect::queryDefaultPreProcessing(audioSession,
807                                               descriptors,
808                                               &numEffects);
809    }
810    if (status != NO_ERROR || numEffects == 0) {
811        delete[] descriptors;
812        return NULL;
813    }
814    ALOGV("queryDefaultPreProcessing() got %d effects", numEffects);
815
816    jobjectArray ret = env->NewObjectArray(numEffects, fields.clazzDesc, NULL);
817    if (ret == NULL) {
818        delete[] descriptors;
819        return ret;
820    }
821
822    char str[EFFECT_STRING_LEN_MAX];
823    jstring jdescType;
824    jstring jdescUuid;
825    jstring jdescConnect;
826    jstring jdescName;
827    jstring jdescImplementor;
828    jobject jdesc;
829
830    for (uint32_t i = 0; i < numEffects; i++) {
831
832        AudioEffect::guidToString(&descriptors[i].type, str, EFFECT_STRING_LEN_MAX);
833        jdescType = env->NewStringUTF(str);
834        AudioEffect::guidToString(&descriptors[i].uuid, str, EFFECT_STRING_LEN_MAX);
835        jdescUuid = env->NewStringUTF(str);
836        jdescConnect = env->NewStringUTF("Pre Processing");
837        jdescName = env->NewStringUTF(descriptors[i].name);
838        jdescImplementor = env->NewStringUTF(descriptors[i].implementor);
839
840        jdesc = env->NewObject(fields.clazzDesc,
841                               fields.midDescCstor,
842                               jdescType,
843                               jdescUuid,
844                               jdescConnect,
845                               jdescName,
846                               jdescImplementor);
847        env->DeleteLocalRef(jdescType);
848        env->DeleteLocalRef(jdescUuid);
849        env->DeleteLocalRef(jdescConnect);
850        env->DeleteLocalRef(jdescName);
851        env->DeleteLocalRef(jdescImplementor);
852        if (jdesc == NULL) {
853            ALOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
854            env->DeleteLocalRef(ret);
855            return NULL;;
856        }
857
858        env->SetObjectArrayElement(ret, i, jdesc);
859   }
860
861   return ret;
862}
863
864// ----------------------------------------------------------------------------
865
866// Dalvik VM type signatures
867static JNINativeMethod gMethods[] = {
868    {"native_init",          "()V",      (void *)android_media_AudioEffect_native_init},
869    {"native_setup",         "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;II[I[Ljava/lang/Object;)I",
870                                         (void *)android_media_AudioEffect_native_setup},
871    {"native_finalize",      "()V",      (void *)android_media_AudioEffect_native_finalize},
872    {"native_release",       "()V",      (void *)android_media_AudioEffect_native_release},
873    {"native_setEnabled",    "(Z)I",      (void *)android_media_AudioEffect_native_setEnabled},
874    {"native_getEnabled",    "()Z",      (void *)android_media_AudioEffect_native_getEnabled},
875    {"native_hasControl",    "()Z",      (void *)android_media_AudioEffect_native_hasControl},
876    {"native_setParameter",  "(I[BI[B)I",  (void *)android_media_AudioEffect_native_setParameter},
877    {"native_getParameter",  "(I[BI[B)I",  (void *)android_media_AudioEffect_native_getParameter},
878    {"native_command",       "(II[BI[B)I", (void *)android_media_AudioEffect_native_command},
879    {"native_query_effects", "()[Ljava/lang/Object;", (void *)android_media_AudioEffect_native_queryEffects},
880    {"native_query_pre_processing", "(I)[Ljava/lang/Object;",
881            (void *)android_media_AudioEffect_native_queryPreProcessings},
882};
883
884
885// ----------------------------------------------------------------------------
886
887extern int register_android_media_visualizer(JNIEnv *env);
888
889int register_android_media_AudioEffect(JNIEnv *env)
890{
891    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
892}
893
894jint JNI_OnLoad(JavaVM* vm, void* reserved)
895{
896
897    JNIEnv* env = NULL;
898    jint result = -1;
899
900    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
901        ALOGE("ERROR: GetEnv failed\n");
902        goto bail;
903    }
904    assert(env != NULL);
905
906    if (register_android_media_AudioEffect(env) < 0) {
907        ALOGE("ERROR: AudioEffect native registration failed\n");
908        goto bail;
909    }
910
911    if (register_android_media_visualizer(env) < 0) {
912        ALOGE("ERROR: Visualizer native registration failed\n");
913        goto bail;
914    }
915
916    /* success -- return valid version number */
917    result = JNI_VERSION_1_4;
918
919bail:
920    return result;
921}
922
923