| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <android/bitmap.h> |
| #include "JNIHelpers.h" |
| #include "utils/log.h" |
| #include "FrameSequence.h" |
| |
| #include "FrameSequenceJNI.h" |
| |
| #define JNI_PACKAGE "android/support/rastermill" |
| |
| static struct { |
| jclass clazz; |
| jmethodID ctor; |
| } gFrameSequenceClassInfo; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Frame sequence |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static jobject createJavaFrameSequence(JNIEnv* env, FrameSequence* frameSequence) { |
| if (!frameSequence) { |
| return NULL; |
| } |
| return env->NewObject(gFrameSequenceClassInfo.clazz, gFrameSequenceClassInfo.ctor, |
| reinterpret_cast<jlong>(frameSequence), |
| frameSequence->getWidth(), |
| frameSequence->getHeight(), |
| frameSequence->isOpaque(), |
| frameSequence->getFrameCount(), |
| frameSequence->getDefaultLoopCount()); |
| } |
| |
| static jobject nativeDecodeByteArray(JNIEnv* env, jobject clazz, |
| jbyteArray byteArray, jint offset, jint length) { |
| jbyte* bytes = reinterpret_cast<jbyte*>(env->GetPrimitiveArrayCritical(byteArray, NULL)); |
| if (bytes == NULL) { |
| jniThrowException(env, ILLEGAL_STATE_EXEPTION, |
| "couldn't read array bytes"); |
| return NULL; |
| } |
| bytes += offset; |
| MemoryStream stream(bytes, length); |
| FrameSequence* frameSequence = FrameSequence::create(&stream); |
| env->ReleasePrimitiveArrayCritical(byteArray, bytes, 0); |
| return createJavaFrameSequence(env, frameSequence); |
| } |
| |
| static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, |
| jobject istream, jbyteArray byteArray) { |
| JavaInputStream stream(env, istream, byteArray); |
| FrameSequence* frameSequence = FrameSequence::create(&stream); |
| return createJavaFrameSequence(env, frameSequence); |
| } |
| |
| static void nativeDestroyFrameSequence(JNIEnv* env, jobject clazz, |
| jlong frameSequenceLong) { |
| FrameSequence* frameSequence = reinterpret_cast<FrameSequence*>(frameSequenceLong); |
| delete frameSequence; |
| } |
| |
| static jlong nativeCreateState(JNIEnv* env, jobject clazz, jlong frameSequenceLong) { |
| FrameSequence* frameSequence = reinterpret_cast<FrameSequence*>(frameSequenceLong); |
| FrameSequenceState* state = frameSequence->createState(); |
| return reinterpret_cast<jlong>(state); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Frame sequence state |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static void nativeDestroyState( |
| JNIEnv* env, jobject clazz, jlong frameSequenceStateLong) { |
| FrameSequenceState* frameSequenceState = |
| reinterpret_cast<FrameSequenceState*>(frameSequenceStateLong); |
| delete frameSequenceState; |
| } |
| |
| static jlong JNICALL nativeGetFrame( |
| JNIEnv* env, jobject clazz, jlong frameSequenceStateLong, jint frameNr, |
| jobject bitmap, jint previousFrameNr) { |
| FrameSequenceState* frameSequenceState = |
| reinterpret_cast<FrameSequenceState*>(frameSequenceStateLong); |
| int ret; |
| AndroidBitmapInfo info; |
| void* pixels; |
| if ((ret = AndroidBitmap_getInfo(env, bitmap, &info)) < 0) { |
| |
| jniThrowException(env, ILLEGAL_STATE_EXEPTION, |
| "Couldn't get info from Bitmap "); |
| return 0; |
| } |
| |
| if ((ret = AndroidBitmap_lockPixels(env, bitmap, &pixels)) < 0) { |
| jniThrowException(env, ILLEGAL_STATE_EXEPTION, |
| "Bitmap pixels couldn't be locked"); |
| return 0; |
| } |
| |
| int pixelStride = info.stride >> 2; |
| jlong delayMs = frameSequenceState->drawFrame(frameNr, |
| (Color8888*) pixels, pixelStride, previousFrameNr); |
| |
| AndroidBitmap_unlockPixels(env, bitmap); |
| return delayMs; |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| { "nativeDecodeByteArray", |
| "([BII)L" JNI_PACKAGE "/FrameSequence;", |
| (void*) nativeDecodeByteArray |
| }, |
| { "nativeDecodeStream", |
| "(Ljava/io/InputStream;[B)L" JNI_PACKAGE "/FrameSequence;", |
| (void*) nativeDecodeStream |
| }, |
| { "nativeDestroyFrameSequence", |
| "(J)V", |
| (void*) nativeDestroyFrameSequence |
| }, |
| { "nativeCreateState", |
| "(J)J", |
| (void*) nativeCreateState |
| }, |
| { "nativeGetFrame", |
| "(JILandroid/graphics/Bitmap;I)J", |
| (void*) nativeGetFrame |
| }, |
| { "nativeDestroyState", |
| "(J)V", |
| (void*) nativeDestroyState |
| }, |
| }; |
| |
| jint FrameSequence_OnLoad(JNIEnv* env) { |
| // Get jclass with env->FindClass. |
| // Register methods with env->RegisterNatives. |
| gFrameSequenceClassInfo.clazz = env->FindClass(JNI_PACKAGE "/FrameSequence"); |
| if (!gFrameSequenceClassInfo.clazz) { |
| ALOGW("Failed to find " JNI_PACKAGE "/FrameSequence"); |
| return -1; |
| } |
| gFrameSequenceClassInfo.clazz = (jclass)env->NewGlobalRef(gFrameSequenceClassInfo.clazz); |
| |
| gFrameSequenceClassInfo.ctor = env->GetMethodID(gFrameSequenceClassInfo.clazz, "<init>", "(JIIZII)V"); |
| if (!gFrameSequenceClassInfo.ctor) { |
| ALOGW("Failed to find constructor for FrameSequence - was it stripped?"); |
| return -1; |
| } |
| |
| return env->RegisterNatives(gFrameSequenceClassInfo.clazz, gMethods, METHOD_COUNT(gMethods)); |
| } |