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 GraphicBuffer*
create_composible_buffer(int width, int height) {
uint32_t bufferFlags = GraphicBuffer::USAGE_SW_WRITE_RARELY | GraphicBuffer::USAGE_HW_COMPOSER;
GraphicBuffer* buffer = new GraphicBuffer(width, height, PIXEL_FORMAT_RGBA_8888, bufferFlags);
status_t err = buffer->initCheck();
if (err) {
LOGE("error creating GraphicBuffer: %s", strerror(-err));
return NULL;
}
Rect rect = buffer->getBounds();
LOGE("GraphicBuffer information");
LOGE("width : %d", buffer->getWidth());
LOGE("height: %d", buffer->getHeight());
LOGE("stride: %d", buffer->getStride());
LOGE("usage : 0x%08x", buffer->getUsage());
LOGE("format: %d", buffer->getPixelFormat());
LOGE("bounds: (%d,%d) - (%d,%d)", rect.left, rect.top, rect.right, rect.bottom);
return buffer;
}