| /* |
| * Copyright (C) 2010 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_TAG "SurfaceTexture" |
| |
| #include <stdio.h> |
| |
| #include <EGL/egl.h> |
| #include <EGL/eglext.h> |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| |
| #include <gui/Surface.h> |
| #include <gui/BufferQueue.h> |
| |
| #include "core_jni_helpers.h" |
| |
| #include <cutils/atomic.h> |
| #include <utils/Log.h> |
| #include <utils/misc.h> |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| #include "surfacetexture/SurfaceTexture.h" |
| |
| // ---------------------------------------------------------------------------- |
| |
| #define EGL_PROTECTED_CONTENT_EXT 0x32C0 |
| |
| namespace android { |
| |
| static const char* const OutOfResourcesException = |
| "android/view/Surface$OutOfResourcesException"; |
| static const char* const IllegalStateException = "java/lang/IllegalStateException"; |
| const char* const kSurfaceTextureClassPathName = "android/graphics/SurfaceTexture"; |
| |
| struct fields_t { |
| jfieldID surfaceTexture; |
| jfieldID producer; |
| jfieldID frameAvailableListener; |
| jmethodID postEvent; |
| }; |
| static fields_t fields; |
| |
| // Get an ID that's unique within this process. |
| static int32_t createProcessUniqueId() { |
| static volatile int32_t globalCounter = 0; |
| return android_atomic_inc(&globalCounter); |
| } |
| |
| // Check whether the current EGL context is protected. |
| static bool isProtectedContext() { |
| EGLDisplay dpy = eglGetCurrentDisplay(); |
| EGLContext ctx = eglGetCurrentContext(); |
| |
| if (dpy == EGL_NO_DISPLAY || ctx == EGL_NO_CONTEXT) { |
| return false; |
| } |
| |
| EGLint isProtected = EGL_FALSE; |
| eglQueryContext(dpy, ctx, EGL_PROTECTED_CONTENT_EXT, &isProtected); |
| |
| return isProtected; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static void SurfaceTexture_setSurfaceTexture(JNIEnv* env, jobject thiz, |
| const sp<SurfaceTexture>& surfaceTexture) |
| { |
| SurfaceTexture* const p = |
| (SurfaceTexture*)env->GetLongField(thiz, fields.surfaceTexture); |
| if (surfaceTexture.get()) { |
| surfaceTexture->incStrong((void*)SurfaceTexture_setSurfaceTexture); |
| } |
| if (p) { |
| p->decStrong((void*)SurfaceTexture_setSurfaceTexture); |
| } |
| env->SetLongField(thiz, fields.surfaceTexture, (jlong)surfaceTexture.get()); |
| } |
| |
| static void SurfaceTexture_setProducer(JNIEnv* env, jobject thiz, |
| const sp<IGraphicBufferProducer>& producer) |
| { |
| IGraphicBufferProducer* const p = |
| (IGraphicBufferProducer*)env->GetLongField(thiz, fields.producer); |
| if (producer.get()) { |
| producer->incStrong((void*)SurfaceTexture_setProducer); |
| } |
| if (p) { |
| p->decStrong((void*)SurfaceTexture_setProducer); |
| } |
| env->SetLongField(thiz, fields.producer, (jlong)producer.get()); |
| } |
| |
| static void SurfaceTexture_setFrameAvailableListener(JNIEnv* env, |
| jobject thiz, sp<SurfaceTexture::FrameAvailableListener> listener) |
| { |
| SurfaceTexture::FrameAvailableListener* const p = |
| (SurfaceTexture::FrameAvailableListener*) |
| env->GetLongField(thiz, fields.frameAvailableListener); |
| if (listener.get()) { |
| listener->incStrong((void*)SurfaceTexture_setSurfaceTexture); |
| } |
| if (p) { |
| p->decStrong((void*)SurfaceTexture_setSurfaceTexture); |
| } |
| env->SetLongField(thiz, fields.frameAvailableListener, (jlong)listener.get()); |
| } |
| |
| sp<SurfaceTexture> SurfaceTexture_getSurfaceTexture(JNIEnv* env, jobject thiz) { |
| return (SurfaceTexture*)env->GetLongField(thiz, fields.surfaceTexture); |
| } |
| |
| sp<IGraphicBufferProducer> SurfaceTexture_getProducer(JNIEnv* env, jobject thiz) { |
| return (IGraphicBufferProducer*)env->GetLongField(thiz, fields.producer); |
| } |
| |
| bool android_SurfaceTexture_isInstanceOf(JNIEnv* env, jobject thiz) { |
| jclass surfaceTextureClass = env->FindClass(kSurfaceTextureClassPathName); |
| return env->IsInstanceOf(thiz, surfaceTextureClass); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| class JNISurfaceTextureContext : public SurfaceTexture::FrameAvailableListener |
| { |
| public: |
| JNISurfaceTextureContext(JNIEnv* env, jobject weakThiz, jclass clazz); |
| virtual ~JNISurfaceTextureContext(); |
| virtual void onFrameAvailable(const BufferItem& item); |
| |
| private: |
| static JNIEnv* getJNIEnv(bool* needsDetach); |
| static void detachJNI(); |
| |
| jobject mWeakThiz; |
| jclass mClazz; |
| }; |
| |
| JNISurfaceTextureContext::JNISurfaceTextureContext(JNIEnv* env, |
| jobject weakThiz, jclass clazz) : |
| mWeakThiz(env->NewGlobalRef(weakThiz)), |
| mClazz((jclass)env->NewGlobalRef(clazz)) |
| {} |
| |
| JNIEnv* JNISurfaceTextureContext::getJNIEnv(bool* needsDetach) { |
| *needsDetach = false; |
| JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| if (env == NULL) { |
| JavaVMAttachArgs args = { |
| JNI_VERSION_1_4, "JNISurfaceTextureContext", NULL }; |
| JavaVM* vm = AndroidRuntime::getJavaVM(); |
| int result = vm->AttachCurrentThread(&env, (void*) &args); |
| if (result != JNI_OK) { |
| ALOGE("thread attach failed: %#x", result); |
| return NULL; |
| } |
| *needsDetach = true; |
| } |
| return env; |
| } |
| |
| void JNISurfaceTextureContext::detachJNI() { |
| JavaVM* vm = AndroidRuntime::getJavaVM(); |
| int result = vm->DetachCurrentThread(); |
| if (result != JNI_OK) { |
| ALOGE("thread detach failed: %#x", result); |
| } |
| } |
| |
| JNISurfaceTextureContext::~JNISurfaceTextureContext() |
| { |
| bool needsDetach = false; |
| JNIEnv* env = getJNIEnv(&needsDetach); |
| if (env != NULL) { |
| env->DeleteGlobalRef(mWeakThiz); |
| env->DeleteGlobalRef(mClazz); |
| } else { |
| ALOGW("leaking JNI object references"); |
| } |
| if (needsDetach) { |
| detachJNI(); |
| } |
| } |
| |
| void JNISurfaceTextureContext::onFrameAvailable(const BufferItem& /* item */) |
| { |
| bool needsDetach = false; |
| JNIEnv* env = getJNIEnv(&needsDetach); |
| if (env != NULL) { |
| env->CallStaticVoidMethod(mClazz, fields.postEvent, mWeakThiz); |
| } else { |
| ALOGW("onFrameAvailable event will not posted"); |
| } |
| if (needsDetach) { |
| detachJNI(); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| |
| #define ANDROID_GRAPHICS_SURFACETEXTURE_JNI_ID "mSurfaceTexture" |
| #define ANDROID_GRAPHICS_PRODUCER_JNI_ID "mProducer" |
| #define ANDROID_GRAPHICS_FRAMEAVAILABLELISTENER_JNI_ID \ |
| "mFrameAvailableListener" |
| |
| static void SurfaceTexture_classInit(JNIEnv* env, jclass clazz) |
| { |
| fields.surfaceTexture = env->GetFieldID(clazz, |
| ANDROID_GRAPHICS_SURFACETEXTURE_JNI_ID, "J"); |
| if (fields.surfaceTexture == NULL) { |
| ALOGE("can't find android/graphics/SurfaceTexture.%s", |
| ANDROID_GRAPHICS_SURFACETEXTURE_JNI_ID); |
| } |
| fields.producer = env->GetFieldID(clazz, |
| ANDROID_GRAPHICS_PRODUCER_JNI_ID, "J"); |
| if (fields.producer == NULL) { |
| ALOGE("can't find android/graphics/SurfaceTexture.%s", |
| ANDROID_GRAPHICS_PRODUCER_JNI_ID); |
| } |
| fields.frameAvailableListener = env->GetFieldID(clazz, |
| ANDROID_GRAPHICS_FRAMEAVAILABLELISTENER_JNI_ID, "J"); |
| if (fields.frameAvailableListener == NULL) { |
| ALOGE("can't find android/graphics/SurfaceTexture.%s", |
| ANDROID_GRAPHICS_FRAMEAVAILABLELISTENER_JNI_ID); |
| } |
| |
| fields.postEvent = env->GetStaticMethodID(clazz, "postEventFromNative", |
| "(Ljava/lang/ref/WeakReference;)V"); |
| if (fields.postEvent == NULL) { |
| ALOGE("can't find android/graphics/SurfaceTexture.postEventFromNative"); |
| } |
| } |
| |
| static void SurfaceTexture_init(JNIEnv* env, jobject thiz, jboolean isDetached, |
| jint texName, jboolean singleBufferMode, jobject weakThiz) |
| { |
| sp<IGraphicBufferProducer> producer; |
| sp<IGraphicBufferConsumer> consumer; |
| BufferQueue::createBufferQueue(&producer, &consumer); |
| |
| if (singleBufferMode) { |
| consumer->setMaxBufferCount(1); |
| } |
| |
| sp<SurfaceTexture> surfaceTexture; |
| if (isDetached) { |
| surfaceTexture = new SurfaceTexture(consumer, GL_TEXTURE_EXTERNAL_OES, |
| true, !singleBufferMode); |
| } else { |
| surfaceTexture = new SurfaceTexture(consumer, texName, |
| GL_TEXTURE_EXTERNAL_OES, true, !singleBufferMode); |
| } |
| |
| if (surfaceTexture == 0) { |
| jniThrowException(env, OutOfResourcesException, |
| "Unable to create native SurfaceTexture"); |
| return; |
| } |
| surfaceTexture->setName(String8::format("SurfaceTexture-%d-%d-%d", |
| (isDetached ? 0 : texName), |
| getpid(), |
| createProcessUniqueId())); |
| |
| // If the current context is protected, inform the producer. |
| consumer->setConsumerIsProtected(isProtectedContext()); |
| |
| SurfaceTexture_setSurfaceTexture(env, thiz, surfaceTexture); |
| SurfaceTexture_setProducer(env, thiz, producer); |
| |
| jclass clazz = env->GetObjectClass(thiz); |
| if (clazz == NULL) { |
| jniThrowRuntimeException(env, |
| "Can't find android/graphics/SurfaceTexture"); |
| return; |
| } |
| |
| sp<JNISurfaceTextureContext> ctx(new JNISurfaceTextureContext(env, weakThiz, |
| clazz)); |
| surfaceTexture->setFrameAvailableListener(ctx); |
| SurfaceTexture_setFrameAvailableListener(env, thiz, ctx); |
| } |
| |
| static void SurfaceTexture_finalize(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| surfaceTexture->setFrameAvailableListener(0); |
| SurfaceTexture_setFrameAvailableListener(env, thiz, 0); |
| SurfaceTexture_setSurfaceTexture(env, thiz, 0); |
| SurfaceTexture_setProducer(env, thiz, 0); |
| } |
| |
| static void SurfaceTexture_setDefaultBufferSize( |
| JNIEnv* env, jobject thiz, jint width, jint height) { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| surfaceTexture->setDefaultBufferSize(width, height); |
| } |
| |
| static void SurfaceTexture_updateTexImage(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| status_t err = surfaceTexture->updateTexImage(); |
| if (err == INVALID_OPERATION) { |
| jniThrowException(env, IllegalStateException, "Unable to update texture contents (see " |
| "logcat for details)"); |
| } else if (err < 0) { |
| jniThrowRuntimeException(env, "Error during updateTexImage (see logcat for details)"); |
| } |
| } |
| |
| static void SurfaceTexture_releaseTexImage(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| status_t err = surfaceTexture->releaseTexImage(); |
| if (err == INVALID_OPERATION) { |
| jniThrowException(env, IllegalStateException, "Unable to release texture contents (see " |
| "logcat for details)"); |
| } else if (err < 0) { |
| jniThrowRuntimeException(env, "Error during updateTexImage (see logcat for details)"); |
| } |
| } |
| |
| static jint SurfaceTexture_detachFromGLContext(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| return surfaceTexture->detachFromContext(); |
| } |
| |
| static jint SurfaceTexture_attachToGLContext(JNIEnv* env, jobject thiz, jint tex) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| return surfaceTexture->attachToContext((GLuint)tex); |
| } |
| |
| static void SurfaceTexture_getTransformMatrix(JNIEnv* env, jobject thiz, |
| jfloatArray jmtx) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| float* mtx = env->GetFloatArrayElements(jmtx, NULL); |
| surfaceTexture->getTransformMatrix(mtx); |
| env->ReleaseFloatArrayElements(jmtx, mtx, 0); |
| } |
| |
| static jlong SurfaceTexture_getTimestamp(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| return surfaceTexture->getTimestamp(); |
| } |
| |
| static void SurfaceTexture_release(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| surfaceTexture->abandon(); |
| } |
| |
| static jboolean SurfaceTexture_isReleased(JNIEnv* env, jobject thiz) |
| { |
| sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz)); |
| return surfaceTexture->isAbandoned(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod gSurfaceTextureMethods[] = { |
| {"nativeInit", "(ZIZLjava/lang/ref/WeakReference;)V", (void*)SurfaceTexture_init }, |
| {"nativeFinalize", "()V", (void*)SurfaceTexture_finalize }, |
| {"nativeSetDefaultBufferSize", "(II)V", (void*)SurfaceTexture_setDefaultBufferSize }, |
| {"nativeUpdateTexImage", "()V", (void*)SurfaceTexture_updateTexImage }, |
| {"nativeReleaseTexImage", "()V", (void*)SurfaceTexture_releaseTexImage }, |
| {"nativeDetachFromGLContext", "()I", (void*)SurfaceTexture_detachFromGLContext }, |
| {"nativeAttachToGLContext", "(I)I", (void*)SurfaceTexture_attachToGLContext }, |
| {"nativeGetTransformMatrix", "([F)V", (void*)SurfaceTexture_getTransformMatrix }, |
| {"nativeGetTimestamp", "()J", (void*)SurfaceTexture_getTimestamp }, |
| {"nativeRelease", "()V", (void*)SurfaceTexture_release }, |
| {"nativeIsReleased", "()Z", (void*)SurfaceTexture_isReleased }, |
| }; |
| |
| int register_android_graphics_SurfaceTexture(JNIEnv* env) |
| { |
| // Cache some fields. |
| ScopedLocalRef<jclass> klass(env, FindClassOrDie(env, kSurfaceTextureClassPathName)); |
| SurfaceTexture_classInit(env, klass.get()); |
| |
| return RegisterMethodsOrDie(env, kSurfaceTextureClassPathName, gSurfaceTextureMethods, |
| NELEM(gSurfaceTextureMethods)); |
| } |
| |
| } // namespace android |