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