/*
* Copyright 2015 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 "ImageWriter_JNI"
#include <utils/Log.h>
#include <utils/String8.h>
#include <gui/IProducerListener.h>
#include <gui/Surface.h>
#include <gui/CpuConsumer.h>
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/android_view_Surface.h>
#include <camera3.h>
#include <jni.h>
#include <JNIHelp.h>
#include <stdint.h>
#include <inttypes.h>
#define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) )
#define IMAGE_BUFFER_JNI_ID "mNativeBuffer"
// ----------------------------------------------------------------------------
using namespace android;
enum {
IMAGE_WRITER_MAX_NUM_PLANES = 3,
};
static struct {
jmethodID postEventFromNative;
jfieldID mWriterFormat;
} gImageWriterClassInfo;
static struct {
jfieldID mNativeBuffer;
jfieldID mNativeFenceFd;
jfieldID mPlanes;
} gSurfaceImageClassInfo;
static struct {
jclass clazz;
jmethodID ctor;
} gSurfacePlaneClassInfo;
typedef CpuConsumer::LockedBuffer LockedImage;
// ----------------------------------------------------------------------------
class JNIImageWriterContext : public BnProducerListener {
public:
JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz);
virtual ~JNIImageWriterContext();
// Implementation of IProducerListener, used to notify the ImageWriter that the consumer
// has returned a buffer and it is ready for ImageWriter to dequeue.
virtual void onBufferReleased();
void setProducer(const sp<Surface>& producer) { mProducer = producer; }
Surface* getProducer() { return mProducer.get(); }
void setBufferFormat(int format) { mFormat = format; }
int getBufferFormat() { return mFormat; }
void setBufferWidth(int width) { mWidth = width; }
int getBufferWidth() { return mWidth; }
void setBufferHeight(int height) { mHeight = height; }
int getBufferHeight() { return mHeight; }
private:
static JNIEnv* getJNIEnv(bool* needsDetach);
static void detachJNI();
sp<Surface> mProducer;
jobject mWeakThiz;
jclass mClazz;
int mFormat;
int mWidth;
int mHeight;
};
JNIImageWriterContext::JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz) :
mWeakThiz(env->NewGlobalRef(weakThiz)),
mClazz((jclass)env->NewGlobalRef(clazz)),
mFormat(0),
mWidth(-1),
mHeight(-1) {
}
JNIImageWriterContext::~JNIImageWriterContext() {
ALOGV("%s", __FUNCTION__);
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();
}
mProducer.clear();
}
JNIEnv* JNIImageWriterContext::getJNIEnv(bool* needsDetach) {
ALOGV("%s", __FUNCTION__);
LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!");
*needsDetach = false;
JNIEnv* env = AndroidRuntime::getJNIEnv();
if (env == NULL) {
JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, 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 JNIImageWriterContext::detachJNI() {
ALOGV("%s", __FUNCTION__);
JavaVM* vm = AndroidRuntime::getJavaVM();
int result = vm->DetachCurrentThread();
if (result != JNI_OK) {
ALOGE("thread detach failed: %#x", result);
}
}
void JNIImageWriterContext::onBufferReleased() {
ALOGV("%s: buffer released", __FUNCTION__);
bool needsDetach = false;
JNIEnv* env = getJNIEnv(&needsDetach);
if (env != NULL) {
// Detach the buffer every time when a buffer consumption is done,
// need let this callback give a BufferItem, then only detach if it was attached to this
// Writer. Do the detach unconditionally for opaque format now. see b/19977520
if (mFormat == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
sp<Fence> fence;
sp<GraphicBuffer> buffer;
ALOGV("%s: One buffer is detached", __FUNCTION__);
mProducer->detachNextBuffer(&buffer, &fence);
}
env->CallStaticVoidMethod(mClazz, gImageWriterClassInfo.postEventFromNative, mWeakThiz);
} else {
ALOGW("onBufferReleased event will not posted");
}
if (needsDetach) {
detachJNI();
}
}
// ----------------------------------------------------------------------------
extern "C" {
// -------------------------------Private method declarations--------------
static bool isPossiblyYUV(PixelFormat format);
static void Image_setNativeContext(JNIEnv* env, jobject thiz,
sp<GraphicBuffer> buffer, int fenceFd);
static void Image_getNativeContext(JNIEnv* env, jobject thiz,
GraphicBuffer** buffer, int* fenceFd);
static void Image_unlockIfLocked(JNIEnv* env, jobject thiz);
static bool isFormatOpaque(int format);
// --------------------------ImageWriter methods---------------------------------------
static void ImageWriter_classInit(JNIEnv* env, jclass clazz) {
ALOGV("%s:", __FUNCTION__);
jclass imageClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage");
LOG_ALWAYS_FATAL_IF(imageClazz == NULL,
"can't find android/media/ImageWriter$WriterSurfaceImage");
gSurfaceImageClassInfo.mNativeBuffer = env->GetFieldID(
imageClazz, IMAGE_BUFFER_JNI_ID, "J");
LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeBuffer == NULL,
"can't find android/media/ImageWriter$WriterSurfaceImage.%s", IMAGE_BUFFER_JNI_ID);
gSurfaceImageClassInfo.mNativeFenceFd = env->GetFieldID(
imageClazz, "mNativeFenceFd", "I");
LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeFenceFd == NULL,
"can't find android/media/ImageWriter$WriterSurfaceImage.mNativeFenceFd");
gSurfaceImageClassInfo.mPlanes = env->GetFieldID(
imageClazz, "mPlanes", "[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;");
LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mPlanes == NULL,
"can't find android/media/ImageWriter$WriterSurfaceImage.mPlanes");
gImageWriterClassInfo.postEventFromNative = env->GetStaticMethodID(
clazz, "postEventFromNative", "(Ljava/lang/Object;)V");
LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.postEventFromNative == NULL,
"can't find android/media/ImageWriter.postEventFromNative");
gImageWriterClassInfo.mWriterFormat = env->GetFieldID(
clazz, "mWriterFormat", "I");
LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.mWriterFormat == NULL,
"can't find android/media/ImageWriter.mWriterFormat");
jclass planeClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage$SurfacePlane");
LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class");
// FindClass only gives a local reference of jclass object.
gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz);
gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>",
"(Landroid/media/ImageWriter$WriterSurfaceImage;IILjava/nio/ByteBuffer;)V");
LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL,
"Can not find SurfacePlane constructor");
}
static jlong ImageWriter_init(JNIEnv* env, jobject thiz, jobject weakThiz, jobject jsurface,
jint maxImages) {
status_t res;
ALOGV("%s: maxImages:%d", __FUNCTION__, maxImages);
sp<Surface> surface(android_view_Surface_getSurface(env, jsurface));
if (surface == NULL) {
jniThrowException(env,
"java/lang/IllegalArgumentException",
"The surface has been released");
return 0;
}
sp<IGraphicBufferProducer> bufferProducer = surface->getIGraphicBufferProducer();
jclass clazz = env->GetObjectClass(thiz);
if (clazz == NULL) {
jniThrowRuntimeException(env, "Can't find android/graphics/ImageWriter");
return 0;
}
sp<JNIImageWriterContext> ctx(new JNIImageWriterContext(env, weakThiz, clazz));
sp<Surface> producer = new Surface(bufferProducer, /*controlledByApp*/false);
ctx->setProducer(producer);
/**
* NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not connectable
* after disconnect. MEDIA or CAMERA are treated the same internally. The producer listener
* will be cleared after disconnect call.
*/
producer->connect(/*api*/NATIVE_WINDOW_API_CAMERA, /*listener*/ctx);
jlong nativeCtx = reinterpret_cast<jlong>(ctx.get());
// Get the dimension and format of the producer.
sp<ANativeWindow> anw = producer;
int32_t width, height, format;
if ((res = anw->query(anw.get(), NATIVE_WINDOW_WIDTH, &width)) != OK) {
ALOGE("%s: Query Surface width failed: %s (%d)", __FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Failed to query Surface width");
return 0;
}
ctx->setBufferWidth(width);
if ((res = anw->query(anw.get(), NATIVE_WINDOW_HEIGHT, &height)) != OK) {
ALOGE("%s: Query Surface height failed: %s (%d)", __FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Failed to query Surface height");
return 0;
}
ctx->setBufferHeight(height);
if ((res = anw->query(anw.get(), NATIVE_WINDOW_FORMAT, &format)) != OK) {
ALOGE("%s: Query Surface format failed: %s (%d)", __FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Failed to query Surface format");
return 0;
}
ctx->setBufferFormat(format);
env->SetIntField(thiz, gImageWriterClassInfo.mWriterFormat, reinterpret_cast<jint>(format));
if (!isFormatOpaque(format)) {
res = native_window_set_usage(anw.get(), GRALLOC_USAGE_SW_WRITE_OFTEN);
if (res != OK) {
ALOGE("%s: Configure usage %08x for format %08x failed: %s (%d)",
__FUNCTION__, static_cast<unsigned int>(GRALLOC_USAGE_SW_WRITE_OFTEN),
format, strerror(-res), res);
jniThrowRuntimeException(env, "Failed to SW_WRITE_OFTEN configure usage");
return 0;
}
}
int minUndequeuedBufferCount = 0;
res = anw->query(anw.get(),
NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBufferCount);
if (res != OK) {
ALOGE("%s: Query producer undequeued buffer count failed: %s (%d)",
__FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Query producer undequeued buffer count failed");
return 0;
}
size_t totalBufferCount = maxImages + minUndequeuedBufferCount;
res = native_window_set_buffer_count(anw.get(), totalBufferCount);
if (res != OK) {
ALOGE("%s: Set buffer count failed: %s (%d)", __FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Set buffer count failed");
return 0;
}
if (ctx != 0) {
ctx->incStrong((void*)ImageWriter_init);
}
return nativeCtx;
}
static void ImageWriter_dequeueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
ALOGV("%s", __FUNCTION__);
JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
if (ctx == NULL || thiz == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"ImageWriterContext is not initialized");
return;
}
sp<ANativeWindow> anw = ctx->getProducer();
android_native_buffer_t *anb = NULL;
int fenceFd = -1;
status_t res = anw->dequeueBuffer(anw.get(), &anb, &fenceFd);
if (res != OK) {
ALOGE("%s: Dequeue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
switch (res) {
case NO_INIT:
jniThrowException(env, "java/lang/IllegalStateException",
"Surface has been abandoned");
break;
default:
// TODO: handle other error cases here.
jniThrowRuntimeException(env, "dequeue buffer failed");
}
return;
}
// New GraphicBuffer object doesn't own the handle, thus the native buffer
// won't be freed when this object is destroyed.
sp<GraphicBuffer> buffer(new GraphicBuffer(anb, /*keepOwnership*/false));
// Note that:
// 1. No need to lock buffer now, will only lock it when the first getPlanes() is called.
// 2. Fence will be saved to mNativeFenceFd, and will consumed by lock/queue/cancel buffer
// later.
// 3. need use lockAsync here, as it will handle the dequeued fence for us automatically.
// Finally, set the native info into image object.
Image_setNativeContext(env, image, buffer, fenceFd);
}
static void ImageWriter_close(JNIEnv* env, jobject thiz, jlong nativeCtx) {
ALOGV("%s:", __FUNCTION__);
JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
if (ctx == NULL || thiz == NULL) {
// ImageWriter is already closed.
return;
}
ANativeWindow* producer = ctx->getProducer();
if (producer != NULL) {
/**
* NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not
* connectable after disconnect. MEDIA or CAMERA are treated the same internally.
* The producer listener will be cleared after disconnect call.
*/
status_t res = native_window_api_disconnect(producer, /*api*/NATIVE_WINDOW_API_CAMERA);
/**
* This is not an error. if client calling process dies, the window will
* also die and all calls to it will return DEAD_OBJECT, thus it's already
* "disconnected"
*/
if (res == DEAD_OBJECT) {
ALOGW("%s: While disconnecting ImageWriter from native window, the"
" native window died already", __FUNCTION__);
} else if (res != OK) {
ALOGE("%s: native window disconnect failed: %s (%d)",
__FUNCTION__, strerror(-res), res);
jniThrowRuntimeException(env, "Native window disconnect failed");
return;
}
}
ctx->decStrong((void*)ImageWriter_init);
}
static void ImageWriter_cancelImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
ALOGV("%s", __FUNCTION__);
JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
if (ctx == NULL || thiz == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"ImageWriterContext is not initialized");
return;
}
sp<ANativeWindow> anw = ctx->getProducer();
GraphicBuffer *buffer = NULL;
int fenceFd = -1;
Image_getNativeContext(env, image, &buffer, &fenceFd);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return;
}
// Unlock the image if it was locked
Image_unlockIfLocked(env, image);
anw->cancelBuffer(anw.get(), buffer, fenceFd);
Image_setNativeContext(env, image, NULL, -1);
}
static void ImageWriter_queueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image,
jlong timestampNs, jint left, jint top, jint right, jint bottom) {
ALOGV("%s", __FUNCTION__);
JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
if (ctx == NULL || thiz == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"ImageWriterContext is not initialized");
return;
}
status_t res = OK;
sp<ANativeWindow> anw = ctx->getProducer();
GraphicBuffer *buffer = NULL;
int fenceFd = -1;
Image_getNativeContext(env, image, &buffer, &fenceFd);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return;
}
// Unlock image if it was locked.
Image_unlockIfLocked(env, image);
// Set timestamp
ALOGV("timestamp to be queued: %" PRId64, timestampNs);
res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
if (res != OK) {
jniThrowRuntimeException(env, "Set timestamp failed");
return;
}
// Set crop
android_native_rect_t cropRect;
cropRect.left = left;
cropRect.top = top;
cropRect.right = right;
cropRect.bottom = bottom;
res = native_window_set_crop(anw.get(), &cropRect);
if (res != OK) {
jniThrowRuntimeException(env, "Set crop rect failed");
return;
}
// Finally, queue input buffer
res = anw->queueBuffer(anw.get(), buffer, fenceFd);
if (res != OK) {
ALOGE("%s: Queue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
switch (res) {
case NO_INIT:
jniThrowException(env, "java/lang/IllegalStateException",
"Surface has been abandoned");
break;
default:
// TODO: handle other error cases here.
jniThrowRuntimeException(env, "Queue input buffer failed");
}
return;
}
// Clear the image native context: end of this image's lifecycle in public API.
Image_setNativeContext(env, image, NULL, -1);
}
static jint ImageWriter_attachAndQueueImage(JNIEnv* env, jobject thiz, jlong nativeCtx,
jlong nativeBuffer, jint imageFormat, jlong timestampNs, jint left, jint top,
jint right, jint bottom) {
ALOGV("%s", __FUNCTION__);
JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
if (ctx == NULL || thiz == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"ImageWriterContext is not initialized");
return -1;
}
sp<Surface> surface = ctx->getProducer();
status_t res = OK;
if (!isFormatOpaque(imageFormat)) {
// TODO: need implement, see b/19962027
jniThrowRuntimeException(env,
"nativeAttachImage for non-opaque image is not implement yet!!!");
return -1;
}
if (!isFormatOpaque(ctx->getBufferFormat())) {
jniThrowException(env, "java/lang/IllegalStateException",
"Trying to attach an opaque image into a non-opaque ImageWriter");
return -1;
}
// Image is guaranteed to be from ImageReader at this point, so it is safe to
// cast to BufferItem pointer.
BufferItem* opaqueBuffer = reinterpret_cast<BufferItem*>(nativeBuffer);
if (opaqueBuffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized or already closed");
return -1;
}
// Step 1. Attach Image
res = surface->attachBuffer(opaqueBuffer->mGraphicBuffer.get());
if (res != OK) {
ALOGE("Attach image failed: %s (%d)", strerror(-res), res);
switch (res) {
case NO_INIT:
jniThrowException(env, "java/lang/IllegalStateException",
"Surface has been abandoned");
break;
default:
// TODO: handle other error cases here.
jniThrowRuntimeException(env, "nativeAttachImage failed!!!");
}
return res;
}
sp < ANativeWindow > anw = surface;
// Step 2. Set timestamp and crop. Note that we do not need unlock the image because
// it was not locked.
ALOGV("timestamp to be queued: %" PRId64, timestampNs);
res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
if (res != OK) {
jniThrowRuntimeException(env, "Set timestamp failed");
return res;
}
android_native_rect_t cropRect;
cropRect.left = left;
cropRect.top = top;
cropRect.right = right;
cropRect.bottom = bottom;
res = native_window_set_crop(anw.get(), &cropRect);
if (res != OK) {
jniThrowRuntimeException(env, "Set crop rect failed");
return res;
}
// Step 3. Queue Image.
res = anw->queueBuffer(anw.get(), opaqueBuffer->mGraphicBuffer.get(), /*fenceFd*/
-1);
if (res != OK) {
ALOGE("%s: Queue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
switch (res) {
case NO_INIT:
jniThrowException(env, "java/lang/IllegalStateException",
"Surface has been abandoned");
break;
default:
// TODO: handle other error cases here.
jniThrowRuntimeException(env, "Queue input buffer failed");
}
return res;
}
// Do not set the image native context. Since it would overwrite the existing native context
// of the image that is from ImageReader, the subsequent image close will run into issues.
return res;
}
// --------------------------Image methods---------------------------------------
static void Image_getNativeContext(JNIEnv* env, jobject thiz,
GraphicBuffer** buffer, int* fenceFd) {
ALOGV("%s", __FUNCTION__);
if (buffer != NULL) {
GraphicBuffer *gb = reinterpret_cast<GraphicBuffer *>
(env->GetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer));
*buffer = gb;
}
if (fenceFd != NULL) {
*fenceFd = reinterpret_cast<jint>(env->GetIntField(
thiz, gSurfaceImageClassInfo.mNativeFenceFd));
}
}
static void Image_setNativeContext(JNIEnv* env, jobject thiz,
sp<GraphicBuffer> buffer, int fenceFd) {
ALOGV("%s:", __FUNCTION__);
GraphicBuffer* p = NULL;
Image_getNativeContext(env, thiz, &p, /*fenceFd*/NULL);
if (buffer != 0) {
buffer->incStrong((void*)Image_setNativeContext);
}
if (p) {
p->decStrong((void*)Image_setNativeContext);
}
env->SetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer,
reinterpret_cast<jlong>(buffer.get()));
env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
}
static void Image_unlockIfLocked(JNIEnv* env, jobject thiz) {
ALOGV("%s", __FUNCTION__);
GraphicBuffer* buffer;
Image_getNativeContext(env, thiz, &buffer, NULL);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return;
}
// Is locked?
bool isLocked = false;
jobject planes = NULL;
if (!isFormatOpaque(buffer->getPixelFormat())) {
planes = env->GetObjectField(thiz, gSurfaceImageClassInfo.mPlanes);
}
isLocked = (planes != NULL);
if (isLocked) {
// no need to use fence here, as we it will be consumed by either cancel or queue buffer.
status_t res = buffer->unlock();
if (res != OK) {
jniThrowRuntimeException(env, "unlock buffer failed");
}
ALOGV("Successfully unlocked the image");
}
}
static jint Image_getWidth(JNIEnv* env, jobject thiz) {
ALOGV("%s", __FUNCTION__);
GraphicBuffer* buffer;
Image_getNativeContext(env, thiz, &buffer, NULL);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return -1;
}
return buffer->getWidth();
}
static jint Image_getHeight(JNIEnv* env, jobject thiz) {
ALOGV("%s", __FUNCTION__);
GraphicBuffer* buffer;
Image_getNativeContext(env, thiz, &buffer, NULL);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return -1;
}
return buffer->getHeight();
}
// Some formats like JPEG defined with different values between android.graphics.ImageFormat and
// graphics.h, need convert to the one defined in graphics.h here.
static int Image_getPixelFormat(JNIEnv* env, int format) {
int jpegFormat;
jfieldID fid;
ALOGV("%s: format = 0x%x", __FUNCTION__, format);
jclass imageFormatClazz = env->FindClass("android/graphics/ImageFormat");
ALOG_ASSERT(imageFormatClazz != NULL);
fid = env->GetStaticFieldID(imageFormatClazz, "JPEG", "I");
jpegFormat = env->GetStaticIntField(imageFormatClazz, fid);
// Translate the JPEG to BLOB for camera purpose.
if (format == jpegFormat) {
format = HAL_PIXEL_FORMAT_BLOB;
}
return format;
}
static jint Image_getFormat(JNIEnv* env, jobject thiz) {
ALOGV("%s", __FUNCTION__);
GraphicBuffer* buffer;
Image_getNativeContext(env, thiz, &buffer, NULL);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return 0;
}
return Image_getPixelFormat(env, buffer->getPixelFormat());
}
static void Image_setFenceFd(JNIEnv* env, jobject thiz, int fenceFd) {
ALOGV("%s:", __FUNCTION__);
env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
}
static void Image_getLockedImage(JNIEnv* env, jobject thiz, LockedImage *image) {
ALOGV("%s", __FUNCTION__);
GraphicBuffer* buffer;
int fenceFd = -1;
Image_getNativeContext(env, thiz, &buffer, &fenceFd);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"Image is not initialized");
return;
}
void* pData = NULL;
android_ycbcr ycbcr = android_ycbcr();
status_t res;
int format = Image_getFormat(env, thiz);
int flexFormat = format;
if (isPossiblyYUV(format)) {
// ImageWriter doesn't use crop by itself, app sets it, use the no crop version.
res = buffer->lockAsyncYCbCr(GRALLOC_USAGE_SW_WRITE_OFTEN, &ycbcr, fenceFd);
// Clear the fenceFd as it is already consumed by lock call.
Image_setFenceFd(env, thiz, /*fenceFd*/-1);
if (res != OK) {
jniThrowRuntimeException(env, "lockAsyncYCbCr failed for YUV buffer");
return;
}
pData = ycbcr.y;
flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
}
// lockAsyncYCbCr for YUV is unsuccessful.
if (pData == NULL) {
res = buffer->lockAsync(GRALLOC_USAGE_SW_WRITE_OFTEN, &pData, fenceFd);
if (res != OK) {
jniThrowRuntimeException(env, "lockAsync failed");
return;
}
}
image->data = reinterpret_cast<uint8_t*>(pData);
image->width = buffer->getWidth();
image->height = buffer->getHeight();
image->format = format;
image->flexFormat = flexFormat;
image->stride = (ycbcr.y != NULL) ? static_cast<uint32_t>(ycbcr.ystride) : buffer->getStride();
image->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
image->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
image->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
image->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
ALOGV("Successfully locked the image");
// crop, transform, scalingMode, timestamp, and frameNumber should be set by producer,
// and we don't set them here.
}
static bool usingRGBAToJpegOverride(int32_t bufferFormat, int32_t writerCtxFormat) {
return writerCtxFormat == HAL_PIXEL_FORMAT_BLOB && bufferFormat == HAL_PIXEL_FORMAT_RGBA_8888;
}
static int32_t applyFormatOverrides(int32_t bufferFormat, int32_t writerCtxFormat)
{
// Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW
// write limitations for some platforms (b/17379185).
if (usingRGBAToJpegOverride(bufferFormat, writerCtxFormat)) {
return HAL_PIXEL_FORMAT_BLOB;
}
return bufferFormat;
}
static uint32_t Image_getJpegSize(LockedImage* buffer, bool usingRGBAOverride) {
ALOGV("%s", __FUNCTION__);
ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
uint32_t size = 0;
uint32_t width = buffer->width;
uint8_t* jpegBuffer = buffer->data;
if (usingRGBAOverride) {
width = (buffer->width + buffer->stride * (buffer->height - 1)) * 4;
}
// First check for JPEG transport header at the end of the buffer
uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob));
struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header);
if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) {
size = blob->jpeg_size;
ALOGV("%s: Jpeg size = %d", __FUNCTION__, size);
}
// failed to find size, default to whole buffer
if (size == 0) {
/*
* This is a problem because not including the JPEG header
* means that in certain rare situations a regular JPEG blob
* will be misidentified as having a header, in which case
* we will get a garbage size value.
*/
ALOGW("%s: No JPEG header detected, defaulting to size=width=%d",
__FUNCTION__, width);
size = width;
}
return size;
}
static void Image_getLockedImageInfo(JNIEnv* env, LockedImage* buffer, int idx,
int32_t writerFormat, uint8_t **base, uint32_t *size, int *pixelStride, int *rowStride) {
ALOGV("%s", __FUNCTION__);
ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
ALOG_ASSERT(base != NULL, "base is NULL!!!");
ALOG_ASSERT(size != NULL, "size is NULL!!!");
ALOG_ASSERT(pixelStride != NULL, "pixelStride is NULL!!!");
ALOG_ASSERT(rowStride != NULL, "rowStride is NULL!!!");
ALOG_ASSERT((idx < IMAGE_WRITER_MAX_NUM_PLANES) && (idx >= 0));
ALOGV("%s: buffer: %p", __FUNCTION__, buffer);
uint32_t dataSize, ySize, cSize, cStride;
uint32_t pStride = 0, rStride = 0;
uint8_t *cb, *cr;
uint8_t *pData = NULL;
int bytesPerPixel = 0;
dataSize = ySize = cSize = cStride = 0;
int32_t fmt = buffer->flexFormat;
bool usingRGBAOverride = usingRGBAToJpegOverride(fmt, writerFormat);
fmt = applyFormatOverrides(fmt, writerFormat);
switch (fmt) {
case HAL_PIXEL_FORMAT_YCbCr_420_888:
pData =
(idx == 0) ?
buffer->data :
(idx == 1) ?
buffer->dataCb :
buffer->dataCr;
// only map until last pixel
if (idx == 0) {
pStride = 1;
rStride = buffer->stride;
dataSize = buffer->stride * (buffer->height - 1) + buffer->width;
} else {
pStride = buffer->chromaStep;
rStride = buffer->chromaStride;
dataSize = buffer->chromaStride * (buffer->height / 2 - 1) +
buffer->chromaStep * (buffer->width / 2 - 1) + 1;
}
break;
// NV21
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
cr = buffer->data + (buffer->stride * buffer->height);
cb = cr + 1;
// only map until last pixel
ySize = buffer->width * (buffer->height - 1) + buffer->width;
cSize = buffer->width * (buffer->height / 2 - 1) + buffer->width - 1;
pData =
(idx == 0) ?
buffer->data :
(idx == 1) ?
cb:
cr;
dataSize = (idx == 0) ? ySize : cSize;
pStride = (idx == 0) ? 1 : 2;
rStride = buffer->width;
break;
case HAL_PIXEL_FORMAT_YV12:
// Y and C stride need to be 16 pixel aligned.
LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
"Stride is not 16 pixel aligned %d", buffer->stride);
ySize = buffer->stride * buffer->height;
cStride = ALIGN(buffer->stride / 2, 16);
cr = buffer->data + ySize;
cSize = cStride * buffer->height / 2;
cb = cr + cSize;
pData =
(idx == 0) ?
buffer->data :
(idx == 1) ?
cb :
cr;
dataSize = (idx == 0) ? ySize : cSize;
pStride = 1;
rStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16);
break;
case HAL_PIXEL_FORMAT_Y8:
// Single plane, 8bpp.
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height;
pStride = 1;
rStride = buffer->stride;
break;
case HAL_PIXEL_FORMAT_Y16:
bytesPerPixel = 2;
// Single plane, 16bpp, strides are specified in pixels, not in bytes
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height * bytesPerPixel;
pStride = bytesPerPixel;
rStride = buffer->stride * 2;
break;
case HAL_PIXEL_FORMAT_BLOB:
// Used for JPEG data, height must be 1, width == size, single plane.
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height);
pData = buffer->data;
dataSize = Image_getJpegSize(buffer, usingRGBAOverride);
pStride = bytesPerPixel;
rowStride = 0;
break;
case HAL_PIXEL_FORMAT_RAW16:
// Single plane 16bpp bayer data.
bytesPerPixel = 2;
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height * bytesPerPixel;
pStride = bytesPerPixel;
rStride = buffer->stride * 2;
break;
case HAL_PIXEL_FORMAT_RAW10:
// Single plane 10bpp bayer data.
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
LOG_ALWAYS_FATAL_IF(buffer->width % 4,
"Width is not multiple of 4 %d", buffer->width);
LOG_ALWAYS_FATAL_IF(buffer->height % 2,
"Height is not even %d", buffer->height);
LOG_ALWAYS_FATAL_IF(buffer->stride < (buffer->width * 10 / 8),
"stride (%d) should be at least %d",
buffer->stride, buffer->width * 10 / 8);
pData = buffer->data;
dataSize = buffer->stride * buffer->height;
pStride = 0;
rStride = buffer->stride;
break;
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
// Single plane, 32bpp.
bytesPerPixel = 4;
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height * bytesPerPixel;
pStride = bytesPerPixel;
rStride = buffer->stride * 4;
break;
case HAL_PIXEL_FORMAT_RGB_565:
// Single plane, 16bpp.
bytesPerPixel = 2;
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height * bytesPerPixel;
pStride = bytesPerPixel;
rStride = buffer->stride * 2;
break;
case HAL_PIXEL_FORMAT_RGB_888:
// Single plane, 24bpp.
bytesPerPixel = 3;
ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
pData = buffer->data;
dataSize = buffer->stride * buffer->height * bytesPerPixel;
pStride = bytesPerPixel;
rStride = buffer->stride * 3;
break;
default:
jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
"Pixel format: 0x%x is unsupported", fmt);
break;
}
*base = pData;
*size = dataSize;
*pixelStride = pStride;
*rowStride = rStride;
}
static jobjectArray Image_createSurfacePlanes(JNIEnv* env, jobject thiz,
int numPlanes, int writerFormat) {
ALOGV("%s: create SurfacePlane array with size %d", __FUNCTION__, numPlanes);
int rowStride, pixelStride;
uint8_t *pData;
uint32_t dataSize;
jobject byteBuffer;
int format = Image_getFormat(env, thiz);
if (isFormatOpaque(format) && numPlanes > 0) {
String8 msg;
msg.appendFormat("Format 0x%x is opaque, thus not writable, the number of planes (%d)"
" must be 0", format, numPlanes);
jniThrowException(env, "java/lang/IllegalArgumentException", msg.string());
return NULL;
}
jobjectArray surfacePlanes = env->NewObjectArray(numPlanes, gSurfacePlaneClassInfo.clazz,
/*initial_element*/NULL);
if (surfacePlanes == NULL) {
jniThrowRuntimeException(env, "Failed to create SurfacePlane arrays,"
" probably out of memory");
return NULL;
}
if (isFormatOpaque(format)) {
return surfacePlanes;
}
// Buildup buffer info: rowStride, pixelStride and byteBuffers.
LockedImage lockedImg = LockedImage();
Image_getLockedImage(env, thiz, &lockedImg);
// Create all SurfacePlanes
writerFormat = Image_getPixelFormat(env, writerFormat);
for (int i = 0; i < numPlanes; i++) {
Image_getLockedImageInfo(env, &lockedImg, i, writerFormat,
&pData, &dataSize, &pixelStride, &rowStride);
byteBuffer = env->NewDirectByteBuffer(pData, dataSize);
if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) {
jniThrowException(env, "java/lang/IllegalStateException",
"Failed to allocate ByteBuffer");
return NULL;
}
// Finally, create this SurfacePlane.
jobject surfacePlane = env->NewObject(gSurfacePlaneClassInfo.clazz,
gSurfacePlaneClassInfo.ctor, thiz, rowStride, pixelStride, byteBuffer);
env->SetObjectArrayElement(surfacePlanes, i, surfacePlane);
}
return surfacePlanes;
}
// -------------------------------Private convenience methods--------------------
static bool isFormatOpaque(int format) {
// Only treat IMPLEMENTATION_DEFINED as an opaque format for now.
return format == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
}
static bool isPossiblyYUV(PixelFormat format) {
switch (static_cast<int>(format)) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_RGB_888:
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_BGRA_8888:
case HAL_PIXEL_FORMAT_Y8:
case HAL_PIXEL_FORMAT_Y16:
case HAL_PIXEL_FORMAT_RAW16:
case HAL_PIXEL_FORMAT_RAW10:
case HAL_PIXEL_FORMAT_RAW_OPAQUE:
case HAL_PIXEL_FORMAT_BLOB:
case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
return false;
case HAL_PIXEL_FORMAT_YV12:
case HAL_PIXEL_FORMAT_YCbCr_420_888:
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_I:
default:
return true;
}
}
} // extern "C"
// ----------------------------------------------------------------------------
static JNINativeMethod gImageWriterMethods[] = {
{"nativeClassInit", "()V", (void*)ImageWriter_classInit },
{"nativeInit", "(Ljava/lang/Object;Landroid/view/Surface;I)J",
(void*)ImageWriter_init },
{"nativeClose", "(J)V", (void*)ImageWriter_close },
{"nativeAttachAndQueueImage", "(JJIJIIII)I", (void*)ImageWriter_attachAndQueueImage },
{"nativeDequeueInputImage", "(JLandroid/media/Image;)V", (void*)ImageWriter_dequeueImage },
{"nativeQueueInputImage", "(JLandroid/media/Image;JIIII)V", (void*)ImageWriter_queueImage },
{"cancelImage", "(JLandroid/media/Image;)V", (void*)ImageWriter_cancelImage },
};
static JNINativeMethod gImageMethods[] = {
{"nativeCreatePlanes", "(II)[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;",
(void*)Image_createSurfacePlanes },
{"nativeGetWidth", "()I", (void*)Image_getWidth },
{"nativeGetHeight", "()I", (void*)Image_getHeight },
{"nativeGetFormat", "()I", (void*)Image_getFormat },
};
int register_android_media_ImageWriter(JNIEnv *env) {
int ret1 = AndroidRuntime::registerNativeMethods(env,
"android/media/ImageWriter", gImageWriterMethods, NELEM(gImageWriterMethods));
int ret2 = AndroidRuntime::registerNativeMethods(env,
"android/media/ImageWriter$WriterSurfaceImage", gImageMethods, NELEM(gImageMethods));
return (ret1 || ret2);
}