blob: 5506f6149fa5252acfcc4d73b6bc18933ddb0708 [file] [log] [blame]
/*
* Copyright 2012, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "MediaCrypto-JNI"
#include <utils/Log.h>
#include "android_media_MediaCrypto.h"
#include "android_runtime/AndroidRuntime.h"
#include "jni.h"
#include <nativehelper/JNIHelp.h>
#include <cutils/properties.h>
#include <media/stagefright/foundation/ADebug.h>
#include <mediadrm/DrmUtils.h>
#include <mediadrm/ICrypto.h>
namespace android {
struct fields_t {
jfieldID context;
};
static fields_t gFields;
static sp<JCrypto> getCrypto(JNIEnv *env, jobject thiz) {
return (JCrypto *)env->GetLongField(thiz, gFields.context);
}
JCrypto::JCrypto(
JNIEnv *env, jobject thiz,
const uint8_t uuid[16], const void *initData, size_t initSize) {
mObject = env->NewWeakGlobalRef(thiz);
mCrypto = MakeCrypto(uuid, initData, initSize);
}
JCrypto::~JCrypto() {
if (mCrypto != NULL) {
mCrypto->destroyPlugin();
}
mCrypto.clear();
JNIEnv *env = AndroidRuntime::getJNIEnv();
env->DeleteWeakGlobalRef(mObject);
mObject = NULL;
}
// static
sp<ICrypto> JCrypto::MakeCrypto() {
return DrmUtils::MakeCrypto();
}
// static
sp<ICrypto> JCrypto::MakeCrypto(
const uint8_t uuid[16], const void *initData, size_t initSize) {
sp<ICrypto> crypto = MakeCrypto();
if (crypto == NULL) {
return NULL;
}
status_t err = crypto->createPlugin(uuid, initData, initSize);
if (err != OK) {
return NULL;
}
return crypto;
}
bool JCrypto::requiresSecureDecoderComponent(const char *mime) const {
if (mCrypto == NULL) {
return false;
}
return mCrypto->requiresSecureDecoderComponent(mime);
}
// static
bool JCrypto::IsCryptoSchemeSupported(const uint8_t uuid[16]) {
sp<ICrypto> crypto = MakeCrypto();
if (crypto == NULL) {
return false;
}
return crypto->isCryptoSchemeSupported(uuid);
}
status_t JCrypto::initCheck() const {
return mCrypto == NULL ? NO_INIT : OK;
}
// static
sp<ICrypto> JCrypto::GetCrypto(JNIEnv *env, jobject obj) {
jclass clazz = env->FindClass("android/media/MediaCrypto");
CHECK(clazz != NULL);
if (!env->IsInstanceOf(obj, clazz)) {
return NULL;
}
sp<JCrypto> jcrypto = getCrypto(env, obj);
if (jcrypto == NULL) {
return NULL;
}
return jcrypto->mCrypto;
}
// JNI conversion utilities
static Vector<uint8_t> JByteArrayToVector(JNIEnv *env, jbyteArray const &byteArray) {
Vector<uint8_t> vector;
size_t length = env->GetArrayLength(byteArray);
vector.insertAt((size_t)0, length);
env->GetByteArrayRegion(byteArray, 0, length, (jbyte *)vector.editArray());
return vector;
}
} // namespace android
using namespace android;
static sp<JCrypto> setCrypto(
JNIEnv *env, jobject thiz, const sp<JCrypto> &crypto) {
sp<JCrypto> old = (JCrypto *)env->GetLongField(thiz, gFields.context);
if (crypto != NULL) {
crypto->incStrong(thiz);
}
if (old != NULL) {
old->decStrong(thiz);
}
env->SetLongField(thiz, gFields.context, (jlong)crypto.get());
return old;
}
static void android_media_MediaCrypto_release(JNIEnv *env, jobject thiz) {
setCrypto(env, thiz, NULL);
}
static void android_media_MediaCrypto_native_init(JNIEnv *env) {
jclass clazz = env->FindClass("android/media/MediaCrypto");
CHECK(clazz != NULL);
gFields.context = env->GetFieldID(clazz, "mNativeContext", "J");
CHECK(gFields.context != NULL);
}
static void android_media_MediaCrypto_native_setup(
JNIEnv *env, jobject thiz,
jbyteArray uuidObj, jbyteArray initDataObj) {
jsize uuidLength = env->GetArrayLength(uuidObj);
if (uuidLength != 16) {
jniThrowException(
env,
"java/lang/IllegalArgumentException",
NULL);
return;
}
jboolean isCopy;
jbyte *uuid = env->GetByteArrayElements(uuidObj, &isCopy);
jsize initDataLength = 0;
jbyte *initData = NULL;
if (initDataObj != NULL) {
initDataLength = env->GetArrayLength(initDataObj);
initData = env->GetByteArrayElements(initDataObj, &isCopy);
}
sp<JCrypto> crypto = new JCrypto(
env, thiz, (const uint8_t *)uuid, initData, initDataLength);
status_t err = crypto->initCheck();
if (initDataObj != NULL) {
env->ReleaseByteArrayElements(initDataObj, initData, 0);
initData = NULL;
}
env->ReleaseByteArrayElements(uuidObj, uuid, 0);
uuid = NULL;
if (err != OK) {
std::string strerr(StrCryptoError(err));
jniThrowExceptionFmt(
env,
"android/media/MediaCryptoException",
"Failed to instantiate crypto object: %s", strerr.c_str());
return;
}
setCrypto(env,thiz, crypto);
}
static void android_media_MediaCrypto_native_finalize(
JNIEnv *env, jobject thiz) {
android_media_MediaCrypto_release(env, thiz);
}
static jboolean android_media_MediaCrypto_isCryptoSchemeSupportedNative(
JNIEnv *env, jobject /* thiz */, jbyteArray uuidObj) {
jsize uuidLength = env->GetArrayLength(uuidObj);
if (uuidLength != 16) {
jniThrowException(
env,
"java/lang/IllegalArgumentException",
NULL);
return JNI_FALSE;
}
jboolean isCopy;
jbyte *uuid = env->GetByteArrayElements(uuidObj, &isCopy);
bool result = JCrypto::IsCryptoSchemeSupported((const uint8_t *)uuid);
env->ReleaseByteArrayElements(uuidObj, uuid, 0);
uuid = NULL;
return result ? JNI_TRUE : JNI_FALSE;
}
static jboolean android_media_MediaCrypto_requiresSecureDecoderComponent(
JNIEnv *env, jobject thiz, jstring mimeObj) {
if (mimeObj == NULL) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return JNI_FALSE;
}
sp<JCrypto> crypto = getCrypto(env, thiz);
if (crypto == NULL) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return JNI_FALSE;
}
const char *mime = env->GetStringUTFChars(mimeObj, NULL);
if (mime == NULL) {
return JNI_FALSE;
}
bool result = crypto->requiresSecureDecoderComponent(mime);
env->ReleaseStringUTFChars(mimeObj, mime);
mime = NULL;
return result ? JNI_TRUE : JNI_FALSE;
}
static void android_media_MediaCrypto_setMediaDrmSession(
JNIEnv *env, jobject thiz, jbyteArray jsessionId) {
if (jsessionId == NULL) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return;
}
sp<ICrypto> crypto = JCrypto::GetCrypto(env, thiz);
if (crypto == NULL) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return;
}
Vector<uint8_t> sessionId(JByteArrayToVector(env, jsessionId));
status_t err = crypto->setMediaDrmSession(sessionId);
if (err != OK) {
String8 msg("setMediaDrmSession failed");
if (err == ERROR_DRM_SESSION_NOT_OPENED) {
msg += ": session not opened";
} else if (err == ERROR_UNSUPPORTED) {
msg += ": not supported by this crypto scheme";
} else if (err == NO_INIT) {
msg += ": crypto plugin not initialized";
} else {
std::string strerr(StrCryptoError(err));
msg.appendFormat(": general failure (%s)", strerr.c_str());
}
jniThrowException(env, "android/media/MediaCryptoException", msg.c_str());
}
}
static const JNINativeMethod gMethods[] = {
{ "release", "()V", (void *)android_media_MediaCrypto_release },
{ "native_init", "()V", (void *)android_media_MediaCrypto_native_init },
{ "native_setup", "([B[B)V",
(void *)android_media_MediaCrypto_native_setup },
{ "native_finalize", "()V",
(void *)android_media_MediaCrypto_native_finalize },
{ "isCryptoSchemeSupportedNative", "([B)Z",
(void *)android_media_MediaCrypto_isCryptoSchemeSupportedNative },
{ "requiresSecureDecoderComponent", "(Ljava/lang/String;)Z",
(void *)android_media_MediaCrypto_requiresSecureDecoderComponent },
{ "setMediaDrmSession", "([B)V",
(void *)android_media_MediaCrypto_setMediaDrmSession },
};
int register_android_media_Crypto(JNIEnv *env) {
return AndroidRuntime::registerNativeMethods(env,
"android/media/MediaCrypto", gMethods, NELEM(gMethods));
}