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/*
* Copyright (C) 2009 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 "CameraSource"
#include <utils/Log.h>
#include <OMX_Component.h>
#include <binder/IPCThreadState.h>
#include <media/stagefright/CameraSource.h>
#include <media/stagefright/MediaDebug.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/MetaData.h>
#include <camera/Camera.h>
#include <camera/CameraParameters.h>
#include <utils/String8.h>
#include <cutils/properties.h>
namespace android {
struct CameraSourceListener : public CameraListener {
CameraSourceListener(const sp<CameraSource> &source);
virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2);
virtual void postData(int32_t msgType, const sp<IMemory> &dataPtr);
virtual void postDataTimestamp(
nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
protected:
virtual ~CameraSourceListener();
private:
wp<CameraSource> mSource;
CameraSourceListener(const CameraSourceListener &);
CameraSourceListener &operator=(const CameraSourceListener &);
};
CameraSourceListener::CameraSourceListener(const sp<CameraSource> &source)
: mSource(source) {
}
CameraSourceListener::~CameraSourceListener() {
}
void CameraSourceListener::notify(int32_t msgType, int32_t ext1, int32_t ext2) {
LOGV("notify(%d, %d, %d)", msgType, ext1, ext2);
}
void CameraSourceListener::postData(int32_t msgType, const sp<IMemory> &dataPtr) {
LOGV("postData(%d, ptr:%p, size:%d)",
msgType, dataPtr->pointer(), dataPtr->size());
sp<CameraSource> source = mSource.promote();
if (source.get() != NULL) {
source->dataCallback(msgType, dataPtr);
}
}
void CameraSourceListener::postDataTimestamp(
nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) {
sp<CameraSource> source = mSource.promote();
if (source.get() != NULL) {
source->dataCallbackTimestamp(timestamp/1000, msgType, dataPtr);
}
}
static int32_t getColorFormat(const char* colorFormat) {
if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV422SP)) {
return OMX_COLOR_FormatYUV422SemiPlanar;
}
if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV420SP)) {
return OMX_COLOR_FormatYUV420SemiPlanar;
}
if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV422I)) {
return OMX_COLOR_FormatYCbYCr;
}
if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_RGB565)) {
return OMX_COLOR_Format16bitRGB565;
}
CHECK_EQ(0, "Unknown color format");
}
// static
CameraSource *CameraSource::Create() {
sp<Camera> camera = Camera::connect(0);
if (camera.get() == NULL) {
return NULL;
}
return new CameraSource(camera);
}
// static
CameraSource *CameraSource::CreateFromCamera(const sp<Camera> &camera) {
if (camera.get() == NULL) {
return NULL;
}
return new CameraSource(camera);
}
CameraSource::CameraSource(const sp<Camera> &camera)
: mCamera(camera),
mNumFramesReceived(0),
mLastFrameTimestampUs(0),
mStarted(false),
mFirstFrameTimeUs(0),
mNumFramesEncoded(0),
mNumFramesDropped(0),
mNumGlitches(0),
mGlitchDurationThresholdUs(200000),
mCollectStats(false) {
int64_t token = IPCThreadState::self()->clearCallingIdentity();
String8 s = mCamera->getParameters();
IPCThreadState::self()->restoreCallingIdentity(token);
printf("params: \"%s\"\n", s.string());
int32_t width, height, stride, sliceHeight;
CameraParameters params(s);
params.getPreviewSize(&width, &height);
// Calculate glitch duraton threshold based on frame rate
int32_t frameRate = params.getPreviewFrameRate();
int64_t glitchDurationUs = (1000000LL / frameRate);
if (glitchDurationUs > mGlitchDurationThresholdUs) {
mGlitchDurationThresholdUs = glitchDurationUs;
}
const char *colorFormatStr = params.get(CameraParameters::KEY_VIDEO_FRAME_FORMAT);
CHECK(colorFormatStr != NULL);
int32_t colorFormat = getColorFormat(colorFormatStr);
// XXX: query camera for the stride and slice height
// when the capability becomes available.
stride = width;
sliceHeight = height;
mMeta = new MetaData;
mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_RAW);
mMeta->setInt32(kKeyColorFormat, colorFormat);
mMeta->setInt32(kKeyWidth, width);
mMeta->setInt32(kKeyHeight, height);
mMeta->setInt32(kKeyStride, stride);
mMeta->setInt32(kKeySliceHeight, sliceHeight);
}
CameraSource::~CameraSource() {
if (mStarted) {
stop();
}
}
void CameraSource::startCameraRecording() {
CHECK_EQ(OK, mCamera->startRecording());
}
status_t CameraSource::start(MetaData *meta) {
CHECK(!mStarted);
char value[PROPERTY_VALUE_MAX];
if (property_get("media.stagefright.record-stats", value, NULL)
&& (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
mCollectStats = true;
}
mStartTimeUs = 0;
int64_t startTimeUs;
if (meta && meta->findInt64(kKeyTime, &startTimeUs)) {
mStartTimeUs = startTimeUs;
}
int64_t token = IPCThreadState::self()->clearCallingIdentity();
mCamera->setListener(new CameraSourceListener(this));
startCameraRecording();
IPCThreadState::self()->restoreCallingIdentity(token);
mStarted = true;
return OK;
}
void CameraSource::stopCameraRecording() {
mCamera->stopRecording();
}
status_t CameraSource::stop() {
LOGV("stop");
Mutex::Autolock autoLock(mLock);
mStarted = false;
mFrameAvailableCondition.signal();
int64_t token = IPCThreadState::self()->clearCallingIdentity();
mCamera->setListener(NULL);
stopCameraRecording();
releaseQueuedFrames();
while (!mFramesBeingEncoded.empty()) {
LOGI("Waiting for outstanding frames being encoded: %d",
mFramesBeingEncoded.size());
mFrameCompleteCondition.wait(mLock);
}
mCamera = NULL;
IPCThreadState::self()->restoreCallingIdentity(token);
if (mCollectStats) {
LOGI("Frames received/encoded/dropped: %d/%d/%d in %lld us",
mNumFramesReceived, mNumFramesEncoded, mNumFramesDropped,
mLastFrameTimestampUs - mFirstFrameTimeUs);
}
CHECK_EQ(mNumFramesReceived, mNumFramesEncoded + mNumFramesDropped);
return OK;
}
void CameraSource::releaseRecordingFrame(const sp<IMemory>& frame) {
mCamera->releaseRecordingFrame(frame);
}
void CameraSource::releaseQueuedFrames() {
List<sp<IMemory> >::iterator it;
while (!mFramesReceived.empty()) {
it = mFramesReceived.begin();
releaseRecordingFrame(*it);
mFramesReceived.erase(it);
++mNumFramesDropped;
}
}
sp<MetaData> CameraSource::getFormat() {
return mMeta;
}
void CameraSource::releaseOneRecordingFrame(const sp<IMemory>& frame) {
int64_t token = IPCThreadState::self()->clearCallingIdentity();
releaseRecordingFrame(frame);
IPCThreadState::self()->restoreCallingIdentity(token);
}
void CameraSource::signalBufferReturned(MediaBuffer *buffer) {
LOGV("signalBufferReturned: %p", buffer->data());
for (List<sp<IMemory> >::iterator it = mFramesBeingEncoded.begin();
it != mFramesBeingEncoded.end(); ++it) {
if ((*it)->pointer() == buffer->data()) {
releaseOneRecordingFrame((*it));
mFramesBeingEncoded.erase(it);
++mNumFramesEncoded;
buffer->setObserver(0);
buffer->release();
mFrameCompleteCondition.signal();
return;
}
}
CHECK_EQ(0, "signalBufferReturned: bogus buffer");
}
status_t CameraSource::read(
MediaBuffer **buffer, const ReadOptions *options) {
LOGV("read");
*buffer = NULL;
int64_t seekTimeUs;
ReadOptions::SeekMode mode;
if (options && options->getSeekTo(&seekTimeUs, &mode)) {
return ERROR_UNSUPPORTED;
}
sp<IMemory> frame;
int64_t frameTime;
{
Mutex::Autolock autoLock(mLock);
while (mStarted) {
while(mFramesReceived.empty()) {
mFrameAvailableCondition.wait(mLock);
}
if (!mStarted) {
return OK;
}
frame = *mFramesReceived.begin();
mFramesReceived.erase(mFramesReceived.begin());
frameTime = *mFrameTimes.begin();
mFrameTimes.erase(mFrameTimes.begin());
int64_t skipTimeUs;
if (!options || !options->getSkipFrame(&skipTimeUs)) {
skipTimeUs = frameTime;
}
if (skipTimeUs > frameTime) {
LOGV("skipTimeUs: %lld us > frameTime: %lld us",
skipTimeUs, frameTime);
releaseOneRecordingFrame(frame);
++mNumFramesDropped;
// Safeguard against the abuse of the kSkipFrame_Option.
if (skipTimeUs - frameTime >= 1E6) {
LOGE("Frame skipping requested is way too long: %lld us",
skipTimeUs - frameTime);
return UNKNOWN_ERROR;
}
} else {
mFramesBeingEncoded.push_back(frame);
*buffer = new MediaBuffer(frame->pointer(), frame->size());
(*buffer)->setObserver(this);
(*buffer)->add_ref();
(*buffer)->meta_data()->setInt64(kKeyTime, frameTime);
return OK;
}
}
}
return OK;
}
void CameraSource::dataCallbackTimestamp(int64_t timestampUs,
int32_t msgType, const sp<IMemory> &data) {
LOGV("dataCallbackTimestamp: timestamp %lld us", timestampUs);
Mutex::Autolock autoLock(mLock);
if (!mStarted) {
releaseOneRecordingFrame(data);
++mNumFramesReceived;
++mNumFramesDropped;
return;
}
if (mNumFramesReceived > 0 &&
timestampUs - mLastFrameTimestampUs > mGlitchDurationThresholdUs) {
if (mNumGlitches % 10 == 0) { // Don't spam the log
LOGW("Long delay detected in video recording");
}
++mNumGlitches;
}
// May need to skip frame or modify timestamp. Currently implemented
// by the subclass CameraSourceTimeLapse.
if(skipCurrentFrame(timestampUs)) {
releaseOneRecordingFrame(data);
return;
}
mLastFrameTimestampUs = timestampUs;
if (mNumFramesReceived == 0) {
mFirstFrameTimeUs = timestampUs;
// Initial delay
if (mStartTimeUs > 0) {
if (timestampUs < mStartTimeUs) {
// Frame was captured before recording was started
// Drop it without updating the statistical data.
releaseOneRecordingFrame(data);
return;
}
mStartTimeUs = timestampUs - mStartTimeUs;
}
}
++mNumFramesReceived;
mFramesReceived.push_back(data);
int64_t timeUs = mStartTimeUs + (timestampUs - mFirstFrameTimeUs);
mFrameTimes.push_back(timeUs);
LOGV("initial delay: %lld, current time stamp: %lld",
mStartTimeUs, timeUs);
mFrameAvailableCondition.signal();
}
} // namespace android
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