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diff --git a/media/libstagefright/CameraSourceTimeLapse.cpp b/media/libstagefright/CameraSourceTimeLapse.cpp
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+/*
+ * Copyright (C) 2010 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 "CameraSourceTimeLapse"
+
+#include <binder/IPCThreadState.h>
+#include <binder/MemoryBase.h>
+#include <binder/MemoryHeapBase.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/CameraSource.h>
+#include <media/stagefright/CameraSourceTimeLapse.h>
+#include <media/stagefright/MetaData.h>
+#include <camera/Camera.h>
+#include <camera/CameraParameters.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+namespace android {
+
+// static
+CameraSourceTimeLapse *CameraSourceTimeLapse::CreateFromCamera(
+ const sp<ICamera> &camera,
+ const sp<ICameraRecordingProxy> &proxy,
+ int32_t cameraId,
+ Size videoSize,
+ int32_t videoFrameRate,
+ const sp<Surface>& surface,
+ int64_t timeBetweenFrameCaptureUs) {
+
+ CameraSourceTimeLapse *source = new
+ CameraSourceTimeLapse(camera, proxy, cameraId,
+ videoSize, videoFrameRate, surface,
+ timeBetweenFrameCaptureUs);
+
+ if (source != NULL) {
+ if (source->initCheck() != OK) {
+ delete source;
+ return NULL;
+ }
+ }
+ return source;
+}
+
+CameraSourceTimeLapse::CameraSourceTimeLapse(
+ const sp<ICamera>& camera,
+ const sp<ICameraRecordingProxy>& proxy,
+ int32_t cameraId,
+ Size videoSize,
+ int32_t videoFrameRate,
+ const sp<Surface>& surface,
+ int64_t timeBetweenFrameCaptureUs)
+ : CameraSource(camera, proxy, cameraId, videoSize, videoFrameRate, surface, true),
+ mTimeBetweenTimeLapseVideoFramesUs(1E6/videoFrameRate),
+ mLastTimeLapseFrameRealTimestampUs(0),
+ mSkipCurrentFrame(false) {
+
+ mTimeBetweenFrameCaptureUs = timeBetweenFrameCaptureUs;
+ ALOGD("starting time lapse mode: %lld us",
+ mTimeBetweenFrameCaptureUs);
+
+ mVideoWidth = videoSize.width;
+ mVideoHeight = videoSize.height;
+
+ if (!trySettingVideoSize(videoSize.width, videoSize.height)) {
+ mInitCheck = NO_INIT;
+ }
+
+ // Initialize quick stop variables.
+ mQuickStop = false;
+ mForceRead = false;
+ mLastReadBufferCopy = NULL;
+ mStopWaitingForIdleCamera = false;
+}
+
+CameraSourceTimeLapse::~CameraSourceTimeLapse() {
+ if (mLastReadBufferCopy) {
+ mLastReadBufferCopy->release();
+ mLastReadBufferCopy = NULL;
+ }
+}
+
+void CameraSourceTimeLapse::startQuickReadReturns() {
+ ALOGV("startQuickReadReturns");
+ Mutex::Autolock autoLock(mQuickStopLock);
+
+ // Enable quick stop mode.
+ mQuickStop = true;
+
+ // Force dataCallbackTimestamp() coming from the video camera to
+ // not skip the next frame as we want read() to get a get a frame
+ // right away.
+ mForceRead = true;
+}
+
+bool CameraSourceTimeLapse::trySettingVideoSize(
+ int32_t width, int32_t height) {
+
+ ALOGV("trySettingVideoSize");
+ int64_t token = IPCThreadState::self()->clearCallingIdentity();
+ String8 s = mCamera->getParameters();
+
+ CameraParameters params(s);
+ Vector<Size> supportedSizes;
+ params.getSupportedVideoSizes(supportedSizes);
+ bool videoOutputSupported = false;
+ if (supportedSizes.size() == 0) {
+ params.getSupportedPreviewSizes(supportedSizes);
+ } else {
+ videoOutputSupported = true;
+ }
+
+ bool videoSizeSupported = false;
+ for (uint32_t i = 0; i < supportedSizes.size(); ++i) {
+ int32_t pictureWidth = supportedSizes[i].width;
+ int32_t pictureHeight = supportedSizes[i].height;
+
+ if ((pictureWidth == width) && (pictureHeight == height)) {
+ videoSizeSupported = true;
+ }
+ }
+
+ bool isSuccessful = false;
+ if (videoSizeSupported) {
+ ALOGV("Video size (%d, %d) is supported", width, height);
+ if (videoOutputSupported) {
+ params.setVideoSize(width, height);
+ } else {
+ params.setPreviewSize(width, height);
+ }
+ if (mCamera->setParameters(params.flatten()) == OK) {
+ isSuccessful = true;
+ } else {
+ ALOGE("Failed to set preview size to %dx%d", width, height);
+ isSuccessful = false;
+ }
+ }
+
+ IPCThreadState::self()->restoreCallingIdentity(token);
+ return isSuccessful;
+}
+
+void CameraSourceTimeLapse::signalBufferReturned(MediaBuffer* buffer) {
+ ALOGV("signalBufferReturned");
+ Mutex::Autolock autoLock(mQuickStopLock);
+ if (mQuickStop && (buffer == mLastReadBufferCopy)) {
+ buffer->setObserver(NULL);
+ buffer->release();
+ } else {
+ return CameraSource::signalBufferReturned(buffer);
+ }
+}
+
+void createMediaBufferCopy(
+ const MediaBuffer& sourceBuffer,
+ int64_t frameTime,
+ MediaBuffer **newBuffer) {
+
+ ALOGV("createMediaBufferCopy");
+ size_t sourceSize = sourceBuffer.size();
+ void* sourcePointer = sourceBuffer.data();
+
+ (*newBuffer) = new MediaBuffer(sourceSize);
+ memcpy((*newBuffer)->data(), sourcePointer, sourceSize);
+
+ (*newBuffer)->meta_data()->setInt64(kKeyTime, frameTime);
+}
+
+void CameraSourceTimeLapse::fillLastReadBufferCopy(MediaBuffer& sourceBuffer) {
+ ALOGV("fillLastReadBufferCopy");
+ int64_t frameTime;
+ CHECK(sourceBuffer.meta_data()->findInt64(kKeyTime, &frameTime));
+ createMediaBufferCopy(sourceBuffer, frameTime, &mLastReadBufferCopy);
+ mLastReadBufferCopy->add_ref();
+ mLastReadBufferCopy->setObserver(this);
+}
+
+status_t CameraSourceTimeLapse::read(
+ MediaBuffer **buffer, const ReadOptions *options) {
+ ALOGV("read");
+ if (mLastReadBufferCopy == NULL) {
+ mLastReadStatus = CameraSource::read(buffer, options);
+
+ // mQuickStop may have turned to true while read was blocked.
+ // Make a copy of the buffer in that case.
+ Mutex::Autolock autoLock(mQuickStopLock);
+ if (mQuickStop && *buffer) {
+ fillLastReadBufferCopy(**buffer);
+ }
+ return mLastReadStatus;
+ } else {
+ (*buffer) = mLastReadBufferCopy;
+ (*buffer)->add_ref();
+ return mLastReadStatus;
+ }
+}
+
+sp<IMemory> CameraSourceTimeLapse::createIMemoryCopy(
+ const sp<IMemory> &source_data) {
+
+ ALOGV("createIMemoryCopy");
+ size_t source_size = source_data->size();
+ void* source_pointer = source_data->pointer();
+
+ sp<MemoryHeapBase> newMemoryHeap = new MemoryHeapBase(source_size);
+ sp<MemoryBase> newMemory = new MemoryBase(newMemoryHeap, 0, source_size);
+ memcpy(newMemory->pointer(), source_pointer, source_size);
+ return newMemory;
+}
+
+bool CameraSourceTimeLapse::skipCurrentFrame(int64_t timestampUs) {
+ ALOGV("skipCurrentFrame");
+ if (mSkipCurrentFrame) {
+ mSkipCurrentFrame = false;
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool CameraSourceTimeLapse::skipFrameAndModifyTimeStamp(int64_t *timestampUs) {
+ ALOGV("skipFrameAndModifyTimeStamp");
+ if (mLastTimeLapseFrameRealTimestampUs == 0) {
+ // First time lapse frame. Initialize mLastTimeLapseFrameRealTimestampUs
+ // to current time (timestampUs) and save frame data.
+ ALOGV("dataCallbackTimestamp timelapse: initial frame");
+
+ mLastTimeLapseFrameRealTimestampUs = *timestampUs;
+ return false;
+ }
+
+ {
+ Mutex::Autolock autoLock(mQuickStopLock);
+
+ // mForceRead may be set to true by startQuickReadReturns(). In that
+ // case don't skip this frame.
+ if (mForceRead) {
+ ALOGV("dataCallbackTimestamp timelapse: forced read");
+ mForceRead = false;
+ *timestampUs =
+ mLastFrameTimestampUs + mTimeBetweenTimeLapseVideoFramesUs;
+
+ // Really make sure that this video recording frame will not be dropped.
+ if (*timestampUs < mStartTimeUs) {
+ ALOGI("set timestampUs to start time stamp %lld us", mStartTimeUs);
+ *timestampUs = mStartTimeUs;
+ }
+ return false;
+ }
+ }
+
+ // Workaround to bypass the first 2 input frames for skipping.
+ // The first 2 output frames from the encoder are: decoder specific info and
+ // the compressed video frame data for the first input video frame.
+ if (mNumFramesEncoded >= 1 && *timestampUs <
+ (mLastTimeLapseFrameRealTimestampUs + mTimeBetweenFrameCaptureUs)) {
+ // Skip all frames from last encoded frame until
+ // sufficient time (mTimeBetweenFrameCaptureUs) has passed.
+ // Tell the camera to release its recording frame and return.
+ ALOGV("dataCallbackTimestamp timelapse: skipping intermediate frame");
+ return true;
+ } else {
+ // Desired frame has arrived after mTimeBetweenFrameCaptureUs time:
+ // - Reset mLastTimeLapseFrameRealTimestampUs to current time.
+ // - Artificially modify timestampUs to be one frame time (1/framerate) ahead
+ // of the last encoded frame's time stamp.
+ ALOGV("dataCallbackTimestamp timelapse: got timelapse frame");
+
+ mLastTimeLapseFrameRealTimestampUs = *timestampUs;
+ *timestampUs = mLastFrameTimestampUs + mTimeBetweenTimeLapseVideoFramesUs;
+ return false;
+ }
+ return false;
+}
+
+void CameraSourceTimeLapse::dataCallbackTimestamp(int64_t timestampUs, int32_t msgType,
+ const sp<IMemory> &data) {
+ ALOGV("dataCallbackTimestamp");
+ mSkipCurrentFrame = skipFrameAndModifyTimeStamp(&timestampUs);
+ CameraSource::dataCallbackTimestamp(timestampUs, msgType, data);
+}
+
+} // namespace android
generated by cgit v1.1 at 2024-05-29 15:04:15 +0000