static jint ImageReader_detachImage(JNIEnv* env, jobject thiz, jobject image) {
ALOGV("%s:", __FUNCTION__);
JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
if (ctx == NULL) {
jniThrowException(env, "java/lang/IllegalStateException", "ImageReader was already closed");
return -1;
}
BufferItemConsumer* bufferConsumer = ctx->getBufferConsumer();
BufferItem* buffer = Image_getBufferItem(env, image);
if (!buffer) {
ALOGE(
"Image already released and can not be detached from ImageReader!!!");
jniThrowException(env, "java/lang/IllegalStateException",
"Image detach from ImageReader failed: buffer was already released");
return -1;
}
status_t res = OK;
Image_unlockIfLocked(env, image);
res = bufferConsumer->detachBuffer(buffer->mSlot);
if (res != OK) {
ALOGE("Image detach failed: %s (%d)!!!", strerror(-res), res);
jniThrowRuntimeException(env,
"nativeDetachImage failed for image!!!");
return res;
}
return OK;
}
static void ImageReader_discardFreeBuffers(JNIEnv* env, jobject thiz) {
ALOGV("%s:", __FUNCTION__);
JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
if (ctx == NULL) {
jniThrowException(env, "java/lang/IllegalStateException", "ImageReader was already closed");
return;
}
BufferItemConsumer* bufferConsumer = ctx->getBufferConsumer();
status_t res = bufferConsumer->discardFreeBuffers();
if (res != OK) {
ALOGE("Buffer discard failed: %s (%d)", strerror(-res), res);
jniThrowRuntimeException(env,
"nativeDicardFreebuffers failed");
}
}
static void ImageReader_imageRelease(JNIEnv* env, jobject thiz, jobject image)
{
ALOGV("%s:", __FUNCTION__);
JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
if (ctx == NULL) {
ALOGW("ImageReader#close called before Image#close, consider calling Image#close first");
return;
}
BufferItemConsumer* bufferConsumer = ctx->getBufferConsumer();
BufferItem* buffer = Image_getBufferItem(env, image);
if (buffer == nullptr) {
// Release an already closed image is harmless.
return;
}
sp<Fence> releaseFence = Image_unlockIfLocked(env, image);
bufferConsumer->releaseBuffer(*buffer, releaseFence);
Image_setBufferItem(env, image, NULL);
ctx->returnBufferItem(buffer);
ALOGV("%s: Image (format: 0x%x) has been released", __FUNCTION__, ctx->getBufferFormat());
}
static jint ImageReader_imageSetup(JNIEnv* env, jobject thiz, jobject image) {
ALOGV("%s:", __FUNCTION__);
JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
if (ctx == NULL) {
jniThrowException(env, "java/lang/IllegalStateException",
"ImageReader is not initialized or was already closed");
return -1;
}
BufferItemConsumer* bufferConsumer = ctx->getBufferConsumer();
BufferItem* buffer = ctx->getBufferItem();
if (buffer == NULL) {
ALOGW("Unable to acquire a buffer item, very likely client tried to acquire more than"
" maxImages buffers");
return ACQUIRE_MAX_IMAGES;
}
status_t res = bufferConsumer->acquireBuffer(buffer, 0);
if (res != OK) {
ctx->returnBufferItem(buffer);
if (res != BufferQueue::NO_BUFFER_AVAILABLE) {
if (res == INVALID_OPERATION) {
// Max number of images were already acquired.
ALOGE("%s: Max number of buffers allowed are already acquired : %s (%d)",
__FUNCTION__, strerror(-res), res);
return ACQUIRE_MAX_IMAGES;
} else {
ALOGE("%s: Acquire image failed with some unknown error: %s (%d)",
__FUNCTION__, strerror(-res), res);
jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
"Unknown error (%d) when we tried to acquire an image.",
res);
return ACQUIRE_NO_BUFFERS;
}
}
// This isn't really an error case, as the application may acquire buffer at any time.
return ACQUIRE_NO_BUFFERS;
}
// Add some extra checks for non-opaque formats.
if (!isFormatOpaque(ctx->getBufferFormat())) {
// Check if the left-top corner of the crop rect is origin, we currently assume this point is
// zero, will revisit this once this assumption turns out problematic.
Point lt = buffer->mCrop.leftTop();
if (lt.x != 0 || lt.y != 0) {
jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
"crop left top corner [%d, %d] need to be at origin", lt.x, lt.y);
return -1;
}
// Check if the producer buffer configurations match what ImageReader configured.
int outputWidth = getBufferWidth(buffer);
int outputHeight = getBufferHeight(buffer);
int imgReaderFmt = ctx->getBufferFormat();
int imageReaderWidth = ctx->getBufferWidth();
int imageReaderHeight = ctx->getBufferHeight();
int bufferFormat = buffer->mGraphicBuffer->getPixelFormat();
if ((bufferFormat != HAL_PIXEL_FORMAT_BLOB) && (imgReaderFmt != HAL_PIXEL_FORMAT_BLOB) &&
(imageReaderWidth != outputWidth || imageReaderHeight != outputHeight)) {
ALOGV("%s: Producer buffer size: %dx%d, doesn't match ImageReader configured size: %dx%d",
__FUNCTION__, outputWidth, outputHeight, imageReaderWidth, imageReaderHeight);
}
if (imgReaderFmt != bufferFormat) {
if (imgReaderFmt == HAL_PIXEL_FORMAT_YCbCr_420_888 &&
isPossiblyYUV(bufferFormat)) {
// Treat formats that are compatible with flexible YUV
// (HAL_PIXEL_FORMAT_YCbCr_420_888) as HAL_PIXEL_FORMAT_YCbCr_420_888.
ALOGV("%s: Treat buffer format to 0x%x as HAL_PIXEL_FORMAT_YCbCr_420_888",
__FUNCTION__, bufferFormat);
} else if (imgReaderFmt == HAL_PIXEL_FORMAT_BLOB &&
bufferFormat == HAL_PIXEL_FORMAT_RGBA_8888) {
// Using HAL_PIXEL_FORMAT_RGBA_8888 Gralloc buffers containing JPEGs to get around
// SW write limitations for (b/17379185).
ALOGV("%s: Receiving JPEG in HAL_PIXEL_FORMAT_RGBA_8888 buffer.", __FUNCTION__);
} else {
// Return the buffer to the queue. No need to provide fence, as this buffer wasn't
// used anywhere yet.
bufferConsumer->releaseBuffer(*buffer);
ctx->returnBufferItem(buffer);
// Throw exception
ALOGE("Producer output buffer format: 0x%x, ImageReader configured format: 0x%x",
bufferFormat, ctx->getBufferFormat());
String8 msg;
msg.appendFormat("The producer output buffer format 0x%x doesn't "
"match the ImageReader's configured buffer format 0x%x.",
bufferFormat, ctx->getBufferFormat());
jniThrowException(env, "java/lang/UnsupportedOperationException",
msg.string());
return -1;
}
}
}
// Set SurfaceImage instance member variables
Image_setBufferItem(env, image, buffer);
env->SetLongField(image, gSurfaceImageClassInfo.mTimestamp,
static_cast<jlong>(buffer->mTimestamp));
return ACQUIRE_SUCCESS;
}