| /* |
| * Copyright (C) 2012 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 "Camera2-JpegCompressor" |
| |
| #include <utils/Log.h> |
| #include <ui/GraphicBufferMapper.h> |
| |
| #include "JpegCompressor.h" |
| |
| namespace android { |
| namespace camera2 { |
| |
| JpegCompressor::JpegCompressor(): |
| Thread(false), |
| mIsBusy(false), |
| mCaptureTime(0) { |
| } |
| |
| JpegCompressor::~JpegCompressor() { |
| ALOGV("%s", __FUNCTION__); |
| Mutex::Autolock lock(mMutex); |
| } |
| |
| status_t JpegCompressor::start(Vector<CpuConsumer::LockedBuffer*> buffers, |
| nsecs_t captureTime) { |
| ALOGV("%s", __FUNCTION__); |
| Mutex::Autolock busyLock(mBusyMutex); |
| |
| if (mIsBusy) { |
| ALOGE("%s: Already processing a buffer!", __FUNCTION__); |
| return INVALID_OPERATION; |
| } |
| |
| mIsBusy = true; |
| |
| mBuffers = buffers; |
| mCaptureTime = captureTime; |
| |
| status_t res; |
| res = run("JpegCompressor"); |
| if (res != OK) { |
| ALOGE("%s: Unable to start up compression thread: %s (%d)", |
| __FUNCTION__, strerror(-res), res); |
| //delete mBuffers; // necessary? |
| } |
| return res; |
| } |
| |
| status_t JpegCompressor::cancel() { |
| ALOGV("%s", __FUNCTION__); |
| requestExitAndWait(); |
| return OK; |
| } |
| |
| status_t JpegCompressor::readyToRun() { |
| ALOGV("%s", __FUNCTION__); |
| return OK; |
| } |
| |
| bool JpegCompressor::threadLoop() { |
| ALOGV("%s", __FUNCTION__); |
| |
| mAuxBuffer = mBuffers[0]; // input |
| mJpegBuffer = mBuffers[1]; // output |
| |
| // Set up error management |
| mJpegErrorInfo = NULL; |
| JpegError error; |
| error.parent = this; |
| |
| mCInfo.err = jpeg_std_error(&error); |
| mCInfo.err->error_exit = jpegErrorHandler; |
| |
| jpeg_create_compress(&mCInfo); |
| if (checkError("Error initializing compression")) return false; |
| |
| // Route compressed data straight to output stream buffer |
| JpegDestination jpegDestMgr; |
| jpegDestMgr.parent = this; |
| jpegDestMgr.init_destination = jpegInitDestination; |
| jpegDestMgr.empty_output_buffer = jpegEmptyOutputBuffer; |
| jpegDestMgr.term_destination = jpegTermDestination; |
| |
| mCInfo.dest = &jpegDestMgr; |
| |
| // Set up compression parameters |
| mCInfo.image_width = mAuxBuffer->width; |
| mCInfo.image_height = mAuxBuffer->height; |
| mCInfo.input_components = 1; // 3; |
| mCInfo.in_color_space = JCS_GRAYSCALE; // JCS_RGB |
| |
| ALOGV("%s: image_width = %d, image_height = %d", __FUNCTION__, mCInfo.image_width, mCInfo.image_height); |
| |
| jpeg_set_defaults(&mCInfo); |
| if (checkError("Error configuring defaults")) return false; |
| |
| // Do compression |
| jpeg_start_compress(&mCInfo, TRUE); |
| if (checkError("Error starting compression")) return false; |
| |
| size_t rowStride = mAuxBuffer->stride;// * 3; |
| const size_t kChunkSize = 32; |
| while (mCInfo.next_scanline < mCInfo.image_height) { |
| JSAMPROW chunk[kChunkSize]; |
| for (size_t i = 0 ; i < kChunkSize; i++) { |
| chunk[i] = (JSAMPROW) |
| (mAuxBuffer->data + (i + mCInfo.next_scanline) * rowStride); |
| } |
| jpeg_write_scanlines(&mCInfo, chunk, kChunkSize); |
| if (checkError("Error while compressing")) return false; |
| if (exitPending()) { |
| ALOGV("%s: Cancel called, exiting early", __FUNCTION__); |
| cleanUp(); |
| return false; |
| } |
| } |
| |
| jpeg_finish_compress(&mCInfo); |
| if (checkError("Error while finishing compression")) return false; |
| |
| cleanUp(); |
| return false; |
| } |
| |
| bool JpegCompressor::isBusy() { |
| ALOGV("%s", __FUNCTION__); |
| Mutex::Autolock busyLock(mBusyMutex); |
| return mIsBusy; |
| } |
| |
| // old function -- TODO: update for new buffer type |
| bool JpegCompressor::isStreamInUse(uint32_t /*id*/) { |
| ALOGV("%s", __FUNCTION__); |
| Mutex::Autolock lock(mBusyMutex); |
| |
| if (mBuffers.size() && mIsBusy) { |
| for (size_t i = 0; i < mBuffers.size(); i++) { |
| // if ( mBuffers[i].streamId == (int)id ) return true; |
| } |
| } |
| return false; |
| } |
| |
| bool JpegCompressor::waitForDone(nsecs_t timeout) { |
| ALOGV("%s", __FUNCTION__); |
| Mutex::Autolock lock(mBusyMutex); |
| status_t res = OK; |
| if (mIsBusy) { |
| res = mDone.waitRelative(mBusyMutex, timeout); |
| } |
| return (res == OK); |
| } |
| |
| bool JpegCompressor::checkError(const char *msg) { |
| ALOGV("%s", __FUNCTION__); |
| if (mJpegErrorInfo) { |
| char errBuffer[JMSG_LENGTH_MAX]; |
| mJpegErrorInfo->err->format_message(mJpegErrorInfo, errBuffer); |
| ALOGE("%s: %s: %s", |
| __FUNCTION__, msg, errBuffer); |
| cleanUp(); |
| mJpegErrorInfo = NULL; |
| return true; |
| } |
| return false; |
| } |
| |
| void JpegCompressor::cleanUp() { |
| ALOGV("%s", __FUNCTION__); |
| jpeg_destroy_compress(&mCInfo); |
| Mutex::Autolock lock(mBusyMutex); |
| mIsBusy = false; |
| mDone.signal(); |
| } |
| |
| void JpegCompressor::jpegErrorHandler(j_common_ptr cinfo) { |
| ALOGV("%s", __FUNCTION__); |
| JpegError *error = static_cast<JpegError*>(cinfo->err); |
| error->parent->mJpegErrorInfo = cinfo; |
| } |
| |
| void JpegCompressor::jpegInitDestination(j_compress_ptr cinfo) { |
| ALOGV("%s", __FUNCTION__); |
| JpegDestination *dest= static_cast<JpegDestination*>(cinfo->dest); |
| ALOGV("%s: Setting destination to %p, size %zu", |
| __FUNCTION__, dest->parent->mJpegBuffer->data, kMaxJpegSize); |
| dest->next_output_byte = (JOCTET*)(dest->parent->mJpegBuffer->data); |
| dest->free_in_buffer = kMaxJpegSize; |
| } |
| |
| boolean JpegCompressor::jpegEmptyOutputBuffer(j_compress_ptr /*cinfo*/) { |
| ALOGV("%s", __FUNCTION__); |
| ALOGE("%s: JPEG destination buffer overflow!", |
| __FUNCTION__); |
| return true; |
| } |
| |
| void JpegCompressor::jpegTermDestination(j_compress_ptr cinfo) { |
| (void) cinfo; // TODO: clean up |
| ALOGV("%s", __FUNCTION__); |
| ALOGV("%s: Done writing JPEG data. %zu bytes left in buffer", |
| __FUNCTION__, cinfo->dest->free_in_buffer); |
| } |
| |
| }; // namespace camera2 |
| }; // namespace android |