android_media_AudioEffect.cpp revision a4c72acfbc6c06588dd26cf41e67a834fc0a54f9 
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/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/AudioEffect$Descriptor");
232    if (clazz == NULL) {
233        LOGE("Can't find android/media/AudioEffect$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/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) {
308        nId = (jint *) env->GetPrimitiveArrayCritical(jId, NULL);
309        if (nId == NULL) {
310            LOGE("setup: Error retrieving id pointer");
311            lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
312            goto setup_failure;
313        }
314    } else {
315        LOGE("setup: NULL java array for id pointer");
316        lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
317        goto setup_failure;
318    }
319
320    // create the native AudioEffect object
321    lpAudioEffect = new AudioEffect(typeStr,
322                                    uuidStr,
323                                    priority,
324                                    effectCallback,
325                                    &lpJniStorage->mCallbackData,
326                                    sessionId,
327                                    0);
328    if (lpAudioEffect == NULL) {
329        LOGE("Error creating AudioEffect");
330        goto setup_failure;
331    }
332
333    lStatus = translateError(lpAudioEffect->initCheck());
334    if (lStatus != AUDIOEFFECT_SUCCESS && lStatus != AUDIOEFFECT_ERROR_ALREADY_EXISTS) {
335        LOGE("AudioEffect initCheck failed %d", lStatus);
336        goto setup_failure;
337    }
338
339    nId[0] = lpAudioEffect->id();
340
341    env->ReleasePrimitiveArrayCritical(jId, nId, 0);
342    nId = NULL;
343
344    if (typeStr) {
345        env->ReleaseStringUTFChars(type, typeStr);
346        typeStr = NULL;
347    }
348
349    if (uuidStr) {
350        env->ReleaseStringUTFChars(uuid, uuidStr);
351        uuidStr = NULL;
352    }
353
354    // get the effect descriptor
355    desc = lpAudioEffect->descriptor();
356
357    AudioEffect::guidToString(&desc.type, str, EFFECT_STRING_LEN_MAX);
358    jdescType = env->NewStringUTF(str);
359
360    AudioEffect::guidToString(&desc.uuid, str, EFFECT_STRING_LEN_MAX);
361    jdescUuid = env->NewStringUTF(str);
362
363    if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
364        jdescConnect = env->NewStringUTF("Auxiliary");
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        LOGE("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    LOGV("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        LOGV("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        LOGV("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        LOGE("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        LOGE("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, int psize, jbyteArray pJavaParam,
576        jintArray pJavaValueSize, jbyteArray pJavaValue) {
577    // retrieve the AudioEffect object
578    jbyte* lpParam = NULL;
579    jbyte* lpValue = NULL;
580    jbyte* lpValueSize = NULL;
581    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
582    effect_param_t *p;
583    int voffset;
584
585    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
586            fields.fidNativeAudioEffect);
587
588    if (lpAudioEffect == NULL) {
589        jniThrowException(env, "java/lang/IllegalStateException",
590                "Unable to retrieve AudioEffect pointer for getParameter()");
591        return AUDIOEFFECT_ERROR_NO_INIT;
592    }
593
594    if (psize == 0 || pJavaValueSize == NULL || pJavaParam == NULL || pJavaValue == NULL) {
595        return AUDIOEFFECT_ERROR_BAD_VALUE;
596    }
597
598    // get the pointer for the param from the java array
599    lpParam = (jbyte *) env->GetPrimitiveArrayCritical(pJavaParam, NULL);
600    if (lpParam == NULL) {
601        LOGE("getParameter: Error retrieving param pointer");
602        goto getParameter_Exit;
603    }
604
605    // get the pointer for the value from the java array
606    lpValue = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValue, NULL);
607    if (lpValue == NULL) {
608        LOGE("getParameter: Error retrieving value pointer");
609        goto getParameter_Exit;
610    }
611
612    // get the pointer for the value size from the java array
613    lpValueSize = (jbyte *) env->GetPrimitiveArrayCritical(pJavaValueSize, NULL);
614    if (lpValueSize == NULL) {
615        LOGE("getParameter: Error retrieving value size pointer");
616        goto getParameter_Exit;
617    }
618
619    voffset = ((psize - 1) / sizeof(int) + 1) * sizeof(int);
620    p = (effect_param_t *) malloc(sizeof(effect_param_t) + voffset
621            + lpValueSize[0]);
622    memcpy(p->data, lpParam, psize);
623    p->psize = psize;
624    p->vsize = lpValueSize[0];
625
626    lStatus = lpAudioEffect->getParameter(p);
627    if (lStatus == NO_ERROR) {
628        lStatus = p->status;
629        if (lStatus == NO_ERROR) {
630            memcpy(lpValue, p->data + voffset, p->vsize);
631            lpValueSize[0] = p->vsize;
632        }
633    }
634
635    free(p);
636
637getParameter_Exit:
638
639    if (lpParam != NULL) {
640        env->ReleasePrimitiveArrayCritical(pJavaParam, lpParam, 0);
641    }
642    if (lpValue != NULL) {
643        env->ReleasePrimitiveArrayCritical(pJavaValue, lpValue, 0);
644    }
645    if (lpValueSize != NULL) {
646        env->ReleasePrimitiveArrayCritical(pJavaValueSize, lpValueSize, 0);
647    }
648
649    return translateError(lStatus);
650}
651
652static jint android_media_AudioEffect_native_command(JNIEnv *env, jobject thiz,
653        jint cmdCode, jint cmdSize, jbyteArray jCmdData, jintArray jReplySize,
654        jbyteArray jReplyData) {
655    jbyte* pCmdData = NULL;
656    jbyte* pReplyData = NULL;
657    jint* pReplySize = NULL;
658    jint lStatus = AUDIOEFFECT_ERROR_BAD_VALUE;
659
660    // retrieve the AudioEffect object
661    AudioEffect* lpAudioEffect = (AudioEffect *) env->GetIntField(thiz,
662            fields.fidNativeAudioEffect);
663
664    if (lpAudioEffect == NULL) {
665        jniThrowException(env, "java/lang/IllegalStateException",
666                "Unable to retrieve AudioEffect pointer for setParameter()");
667        return AUDIOEFFECT_ERROR_NO_INIT;
668    }
669
670    if ((cmdSize != 0 && jCmdData == NULL) || (jReplySize != NULL && jReplyData == NULL)) {
671        return AUDIOEFFECT_ERROR_BAD_VALUE;
672    }
673
674    // get the pointer for the command from the java array
675    if (cmdSize != 0) {
676        pCmdData = (jbyte *) env->GetPrimitiveArrayCritical(jCmdData, NULL);
677        if (pCmdData == NULL) {
678            LOGE("setParameter: Error retrieving command pointer");
679            goto command_Exit;
680        }
681    }
682
683    // get the pointer for the reply size from the java array
684    if (jReplySize != NULL) {
685        pReplySize = (jint *) env->GetPrimitiveArrayCritical(jReplySize, NULL);
686        if (pReplySize == NULL) {
687            LOGE("setParameter: Error retrieving reply pointer");
688            goto command_Exit;
689        }
690    }
691
692    // get the pointer for the reply from the java array
693    if (pReplySize != NULL && pReplySize[0] != 0 && jReplyData != NULL) {
694        pReplyData = (jbyte *) env->GetPrimitiveArrayCritical(jReplyData, NULL);
695        if (pReplyData == NULL) {
696            LOGE("setParameter: Error retrieving reply pointer");
697            goto command_Exit;
698        }
699    }
700
701    lStatus = translateError(lpAudioEffect->command((uint32_t)cmdCode,
702                                                    (uint32_t)cmdSize,
703                                                    pCmdData,
704                                                    (uint32_t *)pReplySize,
705                                                    pReplyData));
706
707command_Exit:
708
709    if (pCmdData != NULL) {
710        env->ReleasePrimitiveArrayCritical(jCmdData, pCmdData, 0);
711    }
712    if (pReplyData != NULL) {
713        env->ReleasePrimitiveArrayCritical(jReplyData, pReplyData, 0);
714    }
715    if (pReplySize != NULL) {
716        env->ReleasePrimitiveArrayCritical(jReplySize, pReplySize, 0);
717    }
718
719    return lStatus;
720}
721
722static jobjectArray
723android_media_AudioEffect_native_queryEffects(JNIEnv *env, jclass clazz)
724{
725    effect_descriptor_t desc;
726    char str[EFFECT_STRING_LEN_MAX];
727    uint32_t numEffects;
728    uint32_t i = 0;
729    jstring jdescType;
730    jstring jdescUuid;
731    jstring jdescConnect;
732    jstring jdescName;
733    jstring jdescImplementor;
734    jobject jdesc;
735
736    AudioEffect::queryNumberEffects(&numEffects);
737    jobjectArray ret = env->NewObjectArray(numEffects, fields.clazzDesc, NULL);
738    if (ret == NULL) {
739        return ret;
740    }
741
742    LOGV("queryEffects() numEffects: %d", numEffects);
743
744    for (i = 0; i < numEffects; i++) {
745        if (AudioEffect::queryEffect(i, &desc) != NO_ERROR) {
746            goto queryEffects_failure;
747        }
748
749        AudioEffect::guidToString(&desc.type, str, EFFECT_STRING_LEN_MAX);
750        jdescType = env->NewStringUTF(str);
751
752        AudioEffect::guidToString(&desc.uuid, str, EFFECT_STRING_LEN_MAX);
753        jdescUuid = env->NewStringUTF(str);
754
755        if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
756            jdescConnect = env->NewStringUTF("Auxiliary");
757        } else {
758            jdescConnect = env->NewStringUTF("Insert");
759        }
760
761        jdescName = env->NewStringUTF(desc.name);
762        jdescImplementor = env->NewStringUTF(desc.implementor);
763
764        jdesc = env->NewObject(fields.clazzDesc,
765                               fields.midDescCstor,
766                               jdescType,
767                               jdescUuid,
768                               jdescConnect,
769                               jdescName,
770                               jdescImplementor);
771        env->DeleteLocalRef(jdescType);
772        env->DeleteLocalRef(jdescUuid);
773        env->DeleteLocalRef(jdescConnect);
774        env->DeleteLocalRef(jdescName);
775        env->DeleteLocalRef(jdescImplementor);
776        if (jdesc == NULL) {
777            LOGE("env->NewObject(fields.clazzDesc, fields.midDescCstor)");
778            goto queryEffects_failure;
779        }
780
781        env->SetObjectArrayElement(ret, i, jdesc);
782   }
783
784    return ret;
785
786queryEffects_failure:
787
788    if (ret != NULL) {
789        env->DeleteLocalRef(ret);
790    }
791    return NULL;
792
793}
794
795// ----------------------------------------------------------------------------
796
797// Dalvik VM type signatures
798static JNINativeMethod gMethods[] = {
799    {"native_init",          "()V",      (void *)android_media_AudioEffect_native_init},
800    {"native_setup",         "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;II[I[Ljava/lang/Object;)I",
801                                         (void *)android_media_AudioEffect_native_setup},
802    {"native_finalize",      "()V",      (void *)android_media_AudioEffect_native_finalize},
803    {"native_release",       "()V",      (void *)android_media_AudioEffect_native_release},
804    {"native_setEnabled",    "(Z)I",      (void *)android_media_AudioEffect_native_setEnabled},
805    {"native_getEnabled",    "()Z",      (void *)android_media_AudioEffect_native_getEnabled},
806    {"native_hasControl",    "()Z",      (void *)android_media_AudioEffect_native_hasControl},
807    {"native_setParameter",  "(I[BI[B)I",  (void *)android_media_AudioEffect_native_setParameter},
808    {"native_getParameter",  "(I[B[I[B)I",  (void *)android_media_AudioEffect_native_getParameter},
809    {"native_command",       "(II[B[I[B)I", (void *)android_media_AudioEffect_native_command},
810    {"native_query_effects", "()[Ljava/lang/Object;", (void *)android_media_AudioEffect_native_queryEffects},
811};
812
813
814// ----------------------------------------------------------------------------
815
816extern int register_android_media_visualizer(JNIEnv *env);
817
818int register_android_media_AudioEffect(JNIEnv *env)
819{
820    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
821}
822
823jint JNI_OnLoad(JavaVM* vm, void* reserved)
824{
825
826    JNIEnv* env = NULL;
827    jint result = -1;
828
829    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
830        LOGE("ERROR: GetEnv failed\n");
831        goto bail;
832    }
833    assert(env != NULL);
834
835    if (register_android_media_AudioEffect(env) < 0) {
836        LOGE("ERROR: AudioEffect native registration failed\n");
837        goto bail;
838    }
839
840    if (register_android_media_visualizer(env) < 0) {
841        LOGE("ERROR: Visualizer native registration failed\n");
842        goto bail;
843    }
844
845    /* success -- return valid version number */
846    result = JNI_VERSION_1_4;
847
848bail:
849    return result;
850}
851
852