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317 lines
11 KiB
317 lines
11 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "VtsHalEvsTest"
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#include "FrameHandler.h"
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#include "FormatConvert.h"
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#include <stdio.h>
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#include <string.h>
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#include <android/log.h>
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#include <cutils/native_handle.h>
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#include <ui/GraphicBuffer.h>
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FrameHandler::FrameHandler(android::sp <IEvsCamera> pCamera, CameraDesc cameraInfo,
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android::sp <IEvsDisplay> pDisplay,
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BufferControlFlag mode) :
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mCamera(pCamera),
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mCameraInfo(cameraInfo),
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mDisplay(pDisplay),
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mReturnMode(mode) {
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// Nothing but member initialization here...
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}
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void FrameHandler::shutdown()
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{
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// Make sure we're not still streaming
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blockingStopStream();
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// At this point, the receiver thread is no longer running, so we can safely drop
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// our remote object references so they can be freed
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mCamera = nullptr;
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mDisplay = nullptr;
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}
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bool FrameHandler::startStream() {
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// Tell the camera to start streaming
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Return<EvsResult> result = mCamera->startVideoStream(this);
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if (result != EvsResult::OK) {
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return false;
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}
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// Mark ourselves as running
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mLock.lock();
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mRunning = true;
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mLock.unlock();
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return true;
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}
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void FrameHandler::asyncStopStream() {
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// Tell the camera to stop streaming.
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// This will result in a null frame being delivered when the stream actually stops.
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mCamera->stopVideoStream();
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}
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void FrameHandler::blockingStopStream() {
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// Tell the stream to stop
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asyncStopStream();
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// Wait until the stream has actually stopped
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std::unique_lock<std::mutex> lock(mLock);
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if (mRunning) {
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mSignal.wait(lock, [this]() { return !mRunning; });
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}
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}
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bool FrameHandler::returnHeldBuffer() {
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std::unique_lock<std::mutex> lock(mLock);
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// Return the oldest buffer we're holding
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if (mHeldBuffers.empty()) {
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// No buffers are currently held
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return false;
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}
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BufferDesc buffer = mHeldBuffers.front();
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mHeldBuffers.pop();
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mCamera->doneWithFrame(buffer);
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return true;
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}
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bool FrameHandler::isRunning() {
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std::unique_lock<std::mutex> lock(mLock);
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return mRunning;
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}
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void FrameHandler::waitForFrameCount(unsigned frameCount) {
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// Wait until we've seen at least the requested number of frames (could be more)
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std::unique_lock<std::mutex> lock(mLock);
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mSignal.wait(lock, [this, frameCount](){ return mFramesReceived >= frameCount; });
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}
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void FrameHandler::getFramesCounters(unsigned* received, unsigned* displayed) {
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std::unique_lock<std::mutex> lock(mLock);
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if (received) {
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*received = mFramesReceived;
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}
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if (displayed) {
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*displayed = mFramesDisplayed;
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}
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}
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Return<void> FrameHandler::deliverFrame(const BufferDesc& bufferArg) {
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ALOGD("Received a frame from the camera (%p)", bufferArg.memHandle.getNativeHandle());
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// Local flag we use to keep track of when the stream is stopping
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bool timeToStop = false;
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if (bufferArg.memHandle.getNativeHandle() == nullptr) {
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// Signal that the last frame has been received and the stream is stopped
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timeToStop = true;
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} else {
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// Store a dimension of a received frame.
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mFrameWidth = bufferArg.width;
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mFrameHeight = bufferArg.height;
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// If we were given an opened display at construction time, then send the received
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// image back down the camera.
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if (mDisplay.get()) {
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// Get the output buffer we'll use to display the imagery
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BufferDesc tgtBuffer = {};
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mDisplay->getTargetBuffer([&tgtBuffer](const BufferDesc& buff) {
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tgtBuffer = buff;
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}
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);
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if (tgtBuffer.memHandle == nullptr) {
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printf("Didn't get target buffer - frame lost\n");
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ALOGE("Didn't get requested output buffer -- skipping this frame.");
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} else {
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// Copy the contents of the of buffer.memHandle into tgtBuffer
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copyBufferContents(tgtBuffer, bufferArg);
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// Send the target buffer back for display
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Return <EvsResult> result = mDisplay->returnTargetBufferForDisplay(tgtBuffer);
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if (!result.isOk()) {
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printf("HIDL error on display buffer (%s)- frame lost\n",
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result.description().c_str());
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ALOGE("Error making the remote function call. HIDL said %s",
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result.description().c_str());
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} else if (result != EvsResult::OK) {
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printf("Display reported error - frame lost\n");
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ALOGE("We encountered error %d when returning a buffer to the display!",
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(EvsResult) result);
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} else {
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// Everything looks good!
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// Keep track so tests or watch dogs can monitor progress
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mLock.lock();
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mFramesDisplayed++;
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mLock.unlock();
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}
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}
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}
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switch (mReturnMode) {
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case eAutoReturn:
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// Send the camera buffer back now that the client has seen it
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ALOGD("Calling doneWithFrame");
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// TODO: Why is it that we get a HIDL crash if we pass back the cloned buffer?
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mCamera->doneWithFrame(bufferArg);
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break;
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case eNoAutoReturn:
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// Hang onto the buffer handle for now -- the client will return it explicitly later
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mHeldBuffers.push(bufferArg);
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}
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ALOGD("Frame handling complete");
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}
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// Update our received frame count and notify anybody who cares that things have changed
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mLock.lock();
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if (timeToStop) {
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mRunning = false;
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} else {
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mFramesReceived++;
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}
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mLock.unlock();
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mSignal.notify_all();
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return Void();
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}
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bool FrameHandler::copyBufferContents(const BufferDesc& tgtBuffer,
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const BufferDesc& srcBuffer) {
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bool success = true;
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// Make sure we don't run off the end of either buffer
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const unsigned width = std::min(tgtBuffer.width,
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srcBuffer.width);
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const unsigned height = std::min(tgtBuffer.height,
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srcBuffer.height);
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sp<android::GraphicBuffer> tgt = new android::GraphicBuffer(
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tgtBuffer.memHandle, android::GraphicBuffer::CLONE_HANDLE,
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tgtBuffer.width, tgtBuffer.height, tgtBuffer.format, 1, tgtBuffer.usage,
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tgtBuffer.stride);
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sp<android::GraphicBuffer> src = new android::GraphicBuffer(
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srcBuffer.memHandle, android::GraphicBuffer::CLONE_HANDLE,
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srcBuffer.width, srcBuffer.height, srcBuffer.format, 1, srcBuffer.usage,
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srcBuffer.stride);
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// Lock our source buffer for reading (current expectation are for this to be NV21 format)
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uint8_t* srcPixels = nullptr;
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src->lock(GRALLOC_USAGE_SW_READ_OFTEN, (void**)&srcPixels);
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// Lock our target buffer for writing (should be either RGBA8888 or BGRA8888 format)
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uint32_t* tgtPixels = nullptr;
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tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
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if (srcPixels && tgtPixels) {
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using namespace ::android::hardware::automotive::evs::common;
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if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
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if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) { // 420SP == NV21
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Utils::copyNV21toRGB32(width, height,
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srcPixels,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
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Utils::copyYV12toRGB32(width, height,
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srcPixels,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
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Utils::copyYUYVtoRGB32(width, height,
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srcPixels, srcBuffer.stride,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == tgtBuffer.format) { // 32bit RGBA
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Utils::copyMatchedInterleavedFormats(width, height,
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srcPixels, srcBuffer.stride,
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tgtPixels, tgtBuffer.stride,
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tgtBuffer.pixelSize);
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} else {
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ALOGE("Camera buffer format is not supported");
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success = false;
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}
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} else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
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if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) { // 420SP == NV21
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Utils::copyNV21toBGR32(width, height,
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srcPixels,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
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Utils::copyYV12toBGR32(width, height,
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srcPixels,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
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Utils::copyYUYVtoBGR32(width, height,
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srcPixels, srcBuffer.stride,
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tgtPixels, tgtBuffer.stride);
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} else if (srcBuffer.format == tgtBuffer.format) { // 32bit RGBA
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Utils::copyMatchedInterleavedFormats(width, height,
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srcPixels, srcBuffer.stride,
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tgtPixels, tgtBuffer.stride,
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tgtBuffer.pixelSize);
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} else {
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ALOGE("Camera buffer format is not supported");
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success = false;
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}
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} else {
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// We always expect 32 bit RGB for the display output for now. Is there a need for 565?
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ALOGE("Diplay buffer is always expected to be 32bit RGBA");
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success = false;
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}
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} else {
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ALOGE("Failed to lock buffer contents for contents transfer");
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success = false;
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}
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if (srcPixels) {
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src->unlock();
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}
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if (tgtPixels) {
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tgt->unlock();
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}
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return success;
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}
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void FrameHandler::getFrameDimension(unsigned* width, unsigned* height) {
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if (width) {
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*width = mFrameWidth;
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}
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if (height) {
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*height = mFrameHeight;
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}
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}
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