1 files changed, 165 insertions, 0 deletions
diff --git a/framesequence/jni/FrameSequenceJNI.cpp b/framesequence/jni/FrameSequenceJNI.cpp
new file mode 100644
index 0000000..90d0465
--- /dev/null
+++ b/framesequence/jni/FrameSequenceJNI.cpp
@@ -0,0 +1,165 @@
+/*
+ * 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<jint>(frameSequence),
+            frameSequence->getWidth(),
+            frameSequence->getHeight(),
+            frameSequence->getFrameCount(),
+            frameSequence->isOpaque());
+}
+
+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,
+        jint frameSequenceInt) {
+    FrameSequence* frameSequence = reinterpret_cast<FrameSequence*>(frameSequenceInt);
+    delete frameSequence;
+}
+
+static jint nativeCreateState(JNIEnv* env, jobject clazz, jint frameSequenceInt) {
+    FrameSequence* frameSequence = reinterpret_cast<FrameSequence*>(frameSequenceInt);
+    FrameSequenceState* state = frameSequence->createState();
+    return reinterpret_cast<jint>(state);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Frame sequence state
+////////////////////////////////////////////////////////////////////////////////
+
+static void nativeDestroyState(
+        JNIEnv* env, jobject clazz, jint frameSequenceStateInt) {
+    FrameSequenceState* frameSequenceState =
+            reinterpret_cast<FrameSequenceState*>(frameSequenceStateInt);
+    delete frameSequenceState;
+}
+
+static jlong JNICALL nativeGetFrame(
+        JNIEnv* env, jobject clazz, jint frameSequenceStateInt, jint frameNr,
+        jobject bitmap, jint previousFrameNr) {
+    FrameSequenceState* frameSequenceState =
+            reinterpret_cast<FrameSequenceState*>(frameSequenceStateInt);
+    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",
+        "(I)V",
+        (void*) nativeDestroyFrameSequence
+    },
+    {   "nativeCreateState",
+        "(I)I",
+        (void*) nativeCreateState
+    },
+    {   "nativeGetFrame",
+        "(IILandroid/graphics/Bitmap;I)J",
+        (void*) nativeGetFrame
+    },
+    {   "nativeDestroyFrameSequence",
+        "(I)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>", "(IIIIZ)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));
+}