/*
* 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 "StagefrightRecorder"
#include <inttypes.h>
#include <utils/Log.h>
#include "WebmWriter.h"
#include "StagefrightRecorder.h"
#include <algorithm>
#include <android/hardware/ICamera.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <media/IMediaPlayerService.h>
#include <media/MediaAnalyticsItem.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/foundation/ALooper.h>
#include <media/stagefright/ACodec.h>
#include <media/stagefright/AudioSource.h>
#include <media/stagefright/AMRWriter.h>
#include <media/stagefright/AACWriter.h>
#include <media/stagefright/CameraSource.h>
#include <media/stagefright/CameraSourceTimeLapse.h>
#include <media/stagefright/MPEG2TSWriter.h>
#include <media/stagefright/MPEG4Writer.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/MediaCodecSource.h>
#include <media/stagefright/PersistentSurface.h>
#include <media/MediaProfiles.h>
#include <camera/CameraParameters.h>
#include <utils/Errors.h>
#include <sys/types.h>
#include <ctype.h>
#include <unistd.h>
#include <system/audio.h>
#include "ARTPWriter.h"
namespace android {
static const float kTypicalDisplayRefreshingRate = 60.f;
// display refresh rate drops on battery saver
static const float kMinTypicalDisplayRefreshingRate = kTypicalDisplayRefreshingRate / 2;
static const int kMaxNumVideoTemporalLayers = 8;
// key for media statistics
static const char *kKeyRecorder = "recorder";
// attrs for media statistics
static const char *kRecorderHeight = "android.media.mediarecorder.height";
static const char *kRecorderWidth = "android.media.mediarecorder.width";
static const char *kRecorderFrameRate = "android.media.mediarecorder.frame-rate";
static const char *kRecorderVideoBitrate = "android.media.mediarecorder.video-bitrate";
static const char *kRecorderAudioSampleRate = "android.media.mediarecorder.audio-samplerate";
static const char *kRecorderAudioChannels = "android.media.mediarecorder.audio-channels";
static const char *kRecorderAudioBitrate = "android.media.mediarecorder.audio-bitrate";
static const char *kRecorderVideoIframeInterval = "android.media.mediarecorder.video-iframe-interval";
static const char *kRecorderMovieTimescale = "android.media.mediarecorder.movie-timescale";
static const char *kRecorderAudioTimescale = "android.media.mediarecorder.audio-timescale";
static const char *kRecorderVideoTimescale = "android.media.mediarecorder.video-timescale";
static const char *kRecorderVideoProfile = "android.media.mediarecorder.video-encoder-profile";
static const char *kRecorderVideoLevel = "android.media.mediarecorder.video-encoder-level";
static const char *kRecorderCaptureFpsEnable = "android.media.mediarecorder.capture-fpsenable";
static const char *kRecorderCaptureFps = "android.media.mediarecorder.capture-fps";
static const char *kRecorderRotation = "android.media.mediarecorder.rotation";
// To collect the encoder usage for the battery app
static void addBatteryData(uint32_t params) {
sp<IBinder> binder =
defaultServiceManager()->getService(String16("media.player"));
sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder);
CHECK(service.get() != NULL);
service->addBatteryData(params);
}
StagefrightRecorder::StagefrightRecorder(const String16 &opPackageName)
: MediaRecorderBase(opPackageName),
mWriter(NULL),
mOutputFd(-1),
mAudioSource(AUDIO_SOURCE_CNT),
mVideoSource(VIDEO_SOURCE_LIST_END),
mStarted(false) {
ALOGV("Constructor");
mAnalyticsDirty = false;
reset();
}
StagefrightRecorder::~StagefrightRecorder() {
ALOGV("Destructor");
stop();
if (mLooper != NULL) {
mLooper->stop();
}
// log the current record, provided it has some information worth recording
if (mAnalyticsDirty && mAnalyticsItem != NULL) {
updateMetrics();
if (mAnalyticsItem->count() > 0) {
mAnalyticsItem->setFinalized(true);
mAnalyticsItem->selfrecord();
}
delete mAnalyticsItem;
mAnalyticsItem = NULL;
}
}
void StagefrightRecorder::updateMetrics() {
ALOGV("updateMetrics");
// we'll populate the values from the raw fields.
// (NOT going to populate as we go through the various set* ops)
// TBD mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
// TBD mAudioEncoder = AUDIO_ENCODER_AMR_NB;
// TBD mVideoEncoder = VIDEO_ENCODER_DEFAULT;
mAnalyticsItem->setInt32(kRecorderHeight, mVideoHeight);
mAnalyticsItem->setInt32(kRecorderWidth, mVideoWidth);
mAnalyticsItem->setInt32(kRecorderFrameRate, mFrameRate);
mAnalyticsItem->setInt32(kRecorderVideoBitrate, mVideoBitRate);
mAnalyticsItem->setInt32(kRecorderAudioSampleRate, mSampleRate);
mAnalyticsItem->setInt32(kRecorderAudioChannels, mAudioChannels);
mAnalyticsItem->setInt32(kRecorderAudioBitrate, mAudioBitRate);
// TBD mInterleaveDurationUs = 0;
mAnalyticsItem->setInt32(kRecorderVideoIframeInterval, mIFramesIntervalSec);
// TBD mAudioSourceNode = 0;
// TBD mUse64BitFileOffset = false;
mAnalyticsItem->setInt32(kRecorderMovieTimescale, mMovieTimeScale);
mAnalyticsItem->setInt32(kRecorderAudioTimescale, mAudioTimeScale);
mAnalyticsItem->setInt32(kRecorderVideoTimescale, mVideoTimeScale);
// TBD mCameraId = 0;
// TBD mStartTimeOffsetMs = -1;
mAnalyticsItem->setInt32(kRecorderVideoProfile, mVideoEncoderProfile);
mAnalyticsItem->setInt32(kRecorderVideoLevel, mVideoEncoderLevel);
// TBD mMaxFileDurationUs = 0;
// TBD mMaxFileSizeBytes = 0;
// TBD mTrackEveryTimeDurationUs = 0;
mAnalyticsItem->setInt32(kRecorderCaptureFpsEnable, mCaptureFpsEnable);
mAnalyticsItem->setDouble(kRecorderCaptureFps, mCaptureFps);
// TBD mCaptureFps = -1.0;
// TBD mCameraSourceTimeLapse = NULL;
// TBD mMetaDataStoredInVideoBuffers = kMetadataBufferTypeInvalid;
// TBD mEncoderProfiles = MediaProfiles::getInstance();
mAnalyticsItem->setInt32(kRecorderRotation, mRotationDegrees);
// PII mLatitudex10000 = -3600000;
// PII mLongitudex10000 = -3600000;
// TBD mTotalBitRate = 0;
// TBD: some duration information (capture, paused)
//
}
void StagefrightRecorder::resetMetrics() {
ALOGV("resetMetrics");
// flush anything we have, restart the record
if (mAnalyticsDirty && mAnalyticsItem != NULL) {
updateMetrics();
if (mAnalyticsItem->count() > 0) {
mAnalyticsItem->setFinalized(true);
mAnalyticsItem->selfrecord();
}
delete mAnalyticsItem;
mAnalyticsItem = NULL;
}
mAnalyticsItem = new MediaAnalyticsItem(kKeyRecorder);
(void) mAnalyticsItem->generateSessionID();
mAnalyticsDirty = false;
}
status_t StagefrightRecorder::init() {
ALOGV("init");
mLooper = new ALooper;
mLooper->setName("recorder_looper");
mLooper->start();
return OK;
}
// The client side of mediaserver asks it to creat a SurfaceMediaSource
// and return a interface reference. The client side will use that
// while encoding GL Frames
sp<IGraphicBufferProducer> StagefrightRecorder::querySurfaceMediaSource() const {
ALOGV("Get SurfaceMediaSource");
return mGraphicBufferProducer;
}
status_t StagefrightRecorder::setAudioSource(audio_source_t as) {
ALOGV("setAudioSource: %d", as);
if (as < AUDIO_SOURCE_DEFAULT ||
(as >= AUDIO_SOURCE_CNT && as != AUDIO_SOURCE_FM_TUNER)) {
ALOGE("Invalid audio source: %d", as);
return BAD_VALUE;
}
if (as == AUDIO_SOURCE_DEFAULT) {
mAudioSource = AUDIO_SOURCE_MIC;
} else {
mAudioSource = as;
}
return OK;
}
status_t StagefrightRecorder::setVideoSource(video_source vs) {
ALOGV("setVideoSource: %d", vs);
if (vs < VIDEO_SOURCE_DEFAULT ||
vs >= VIDEO_SOURCE_LIST_END) {
ALOGE("Invalid video source: %d", vs);
return BAD_VALUE;
}
if (vs == VIDEO_SOURCE_DEFAULT) {
mVideoSource = VIDEO_SOURCE_CAMERA;
} else {
mVideoSource = vs;
}
return OK;
}
status_t StagefrightRecorder::setOutputFormat(output_format of) {
ALOGV("setOutputFormat: %d", of);
if (of < OUTPUT_FORMAT_DEFAULT ||
of >= OUTPUT_FORMAT_LIST_END) {
ALOGE("Invalid output format: %d", of);
return BAD_VALUE;
}
if (of == OUTPUT_FORMAT_DEFAULT) {
mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
} else {
mOutputFormat = of;
}
return OK;
}
status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) {
ALOGV("setAudioEncoder: %d", ae);
if (ae < AUDIO_ENCODER_DEFAULT ||
ae >= AUDIO_ENCODER_LIST_END) {
ALOGE("Invalid audio encoder: %d", ae);
return BAD_VALUE;
}
if (ae == AUDIO_ENCODER_DEFAULT) {
mAudioEncoder = AUDIO_ENCODER_AMR_NB;
} else {
mAudioEncoder = ae;
}
return OK;
}
status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) {
ALOGV("setVideoEncoder: %d", ve);
if (ve < VIDEO_ENCODER_DEFAULT ||
ve >= VIDEO_ENCODER_LIST_END) {
ALOGE("Invalid video encoder: %d", ve);
return BAD_VALUE;
}
mVideoEncoder = ve;
return OK;
}
status_t StagefrightRecorder::setVideoSize(int width, int height) {
ALOGV("setVideoSize: %dx%d", width, height);
if (width <= 0 || height <= 0) {
ALOGE("Invalid video size: %dx%d", width, height);
return BAD_VALUE;
}
// Additional check on the dimension will be performed later
mVideoWidth = width;
mVideoHeight = height;
return OK;
}
status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) {
ALOGV("setVideoFrameRate: %d", frames_per_second);
if ((frames_per_second <= 0 && frames_per_second != -1) ||
frames_per_second > kMaxHighSpeedFps) {
ALOGE("Invalid video frame rate: %d", frames_per_second);
return BAD_VALUE;
}
// Additional check on the frame rate will be performed later
mFrameRate = frames_per_second;
return OK;
}
status_t StagefrightRecorder::setCamera(const sp<hardware::ICamera> &camera,
const sp<ICameraRecordingProxy> &proxy) {
ALOGV("setCamera");
if (camera == 0) {
ALOGE("camera is NULL");
return BAD_VALUE;
}
if (proxy == 0) {
ALOGE("camera proxy is NULL");
return BAD_VALUE;
}
mCamera = camera;
mCameraProxy = proxy;
return OK;
}
status_t StagefrightRecorder::setPreviewSurface(const sp<IGraphicBufferProducer> &surface) {
ALOGV("setPreviewSurface: %p", surface.get());
mPreviewSurface = surface;
return OK;
}
status_t StagefrightRecorder::setInputSurface(
const sp<PersistentSurface>& surface) {
mPersistentSurface = surface;
return OK;
}
status_t StagefrightRecorder::setOutputFile(int fd) {
ALOGV("setOutputFile: %d", fd);
if (fd < 0) {
ALOGE("Invalid file descriptor: %d", fd);
return -EBADF;
}
// start with a clean, empty file
ftruncate(fd, 0);
if (mOutputFd >= 0) {
::close(mOutputFd);
}
mOutputFd = dup(fd);
return OK;
}
status_t StagefrightRecorder::setNextOutputFile(int fd) {
Mutex::Autolock autolock(mLock);
// Only support MPEG4
if (mOutputFormat != OUTPUT_FORMAT_MPEG_4) {
ALOGE("Only MP4 file format supports setting next output file");
return INVALID_OPERATION;
}
ALOGV("setNextOutputFile: %d", fd);
if (fd < 0) {
ALOGE("Invalid file descriptor: %d", fd);
return -EBADF;
}
// start with a clean, empty file
ftruncate(fd, 0);
int nextFd = dup(fd);
if (mWriter == NULL) {
ALOGE("setNextOutputFile failed. Writer has been freed");
return INVALID_OPERATION;
}
return mWriter->setNextFd(nextFd);
}
// Attempt to parse an float literal optionally surrounded by whitespace,
// returns true on success, false otherwise.
static bool safe_strtod(const char *s, double *val) {
char *end;
// It is lame, but according to man page, we have to set errno to 0
// before calling strtod().
errno = 0;
*val = strtod(s, &end);
if (end == s || errno == ERANGE) {
return false;
}
// Skip trailing whitespace
while (isspace(*end)) {
++end;
}
// For a successful return, the string must contain nothing but a valid
// float literal optionally surrounded by whitespace.
return *end == '\0';
}
// Attempt to parse an int64 literal optionally surrounded by whitespace,
// returns true on success, false otherwise.
static bool safe_strtoi64(const char *s, int64_t *val) {
char *end;
// It is lame, but according to man page, we have to set errno to 0
// before calling strtoll().
errno = 0;
*val = strtoll(s, &end, 10);
if (end == s || errno == ERANGE) {
return false;
}
// Skip trailing whitespace
while (isspace(*end)) {
++end;
}
// For a successful return, the string must contain nothing but a valid
// int64 literal optionally surrounded by whitespace.
return *end == '\0';
}
// Return true if the value is in [0, 0x007FFFFFFF]
static bool safe_strtoi32(const char *s, int32_t *val) {
int64_t temp;
if (safe_strtoi64(s, &temp)) {
if (temp >= 0 && temp <= 0x007FFFFFFF) {
*val = static_cast<int32_t>(temp);
return true;
}
}
return false;
}
// Trim both leading and trailing whitespace from the given string.
static void TrimString(String8 *s) {
size_t num_bytes = s->bytes();
const char *data = s->string();
size_t leading_space = 0;
while (leading_space < num_bytes && isspace(data[leading_space])) {
++leading_space;
}
size_t i = num_bytes;
while (i > leading_space && isspace(data[i - 1])) {
--i;
}
s->setTo(String8(&data[leading_space], i - leading_space));
}
status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) {
ALOGV("setParamAudioSamplingRate: %d", sampleRate);
if (sampleRate <= 0) {
ALOGE("Invalid audio sampling rate: %d", sampleRate);
return BAD_VALUE;
}
// Additional check on the sample rate will be performed later.
mSampleRate = sampleRate;
return OK;
}
status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) {
ALOGV("setParamAudioNumberOfChannels: %d", channels);
if (channels <= 0 || channels >= 3) {
ALOGE("Invalid number of audio channels: %d", channels);
return BAD_VALUE;
}
// Additional check on the number of channels will be performed later.
mAudioChannels = channels;
return OK;
}
status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) {
ALOGV("setParamAudioEncodingBitRate: %d", bitRate);
if (bitRate <= 0) {
ALOGE("Invalid audio encoding bit rate: %d", bitRate);
return BAD_VALUE;
}
// The target bit rate may not be exactly the same as the requested.
// It depends on many factors, such as rate control, and the bit rate
// range that a specific encoder supports. The mismatch between the
// the target and requested bit rate will NOT be treated as an error.
mAudioBitRate = bitRate;
return OK;
}
status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) {
ALOGV("setParamVideoEncodingBitRate: %d", bitRate);
if (bitRate <= 0) {
ALOGE("Invalid video encoding bit rate: %d", bitRate);
return BAD_VALUE;
}
// The target bit rate may not be exactly the same as the requested.
// It depends on many factors, such as rate control, and the bit rate
// range that a specific encoder supports. The mismatch between the
// the target and requested bit rate will NOT be treated as an error.
mVideoBitRate = bitRate;
return OK;
}
// Always rotate clockwise, and only support 0, 90, 180 and 270 for now.
status_t StagefrightRecorder::setParamVideoRotation(int32_t degrees) {
ALOGV("setParamVideoRotation: %d", degrees);
if (degrees < 0 || degrees % 90 != 0) {
ALOGE("Unsupported video rotation angle: %d", degrees);
return BAD_VALUE;
}
mRotationDegrees = degrees % 360;
return OK;
}
status_t StagefrightRecorder::setParamMaxFileDurationUs(int64_t timeUs) {
ALOGV("setParamMaxFileDurationUs: %lld us", (long long)timeUs);
// This is meant for backward compatibility for MediaRecorder.java
if (timeUs <= 0) {
ALOGW("Max file duration is not positive: %lld us. Disabling duration limit.",
(long long)timeUs);
timeUs = 0; // Disable the duration limit for zero or negative values.
} else if (timeUs <= 100000LL) { // XXX: 100 milli-seconds
ALOGE("Max file duration is too short: %lld us", (long long)timeUs);
return BAD_VALUE;
}
if (timeUs <= 15 * 1000000LL) {
ALOGW("Target duration (%lld us) too short to be respected", (long long)timeUs);
}
mMaxFileDurationUs = timeUs;
return OK;
}
status_t StagefrightRecorder::setParamMaxFileSizeBytes(int64_t bytes) {
ALOGV("setParamMaxFileSizeBytes: %lld bytes", (long long)bytes);
// This is meant for backward compatibility for MediaRecorder.java
if (bytes <= 0) {
ALOGW("Max file size is not positive: %lld bytes. "
"Disabling file size limit.", (long long)bytes);
bytes = 0; // Disable the file size limit for zero or negative values.
} else if (bytes <= 1024) { // XXX: 1 kB
ALOGE("Max file size is too small: %lld bytes", (long long)bytes);
return BAD_VALUE;
}
if (bytes <= 100 * 1024) {
ALOGW("Target file size (%lld bytes) is too small to be respected", (long long)bytes);
}
mMaxFileSizeBytes = bytes;
return OK;
}
status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) {
ALOGV("setParamInterleaveDuration: %d", durationUs);
if (durationUs <= 500000) { // 500 ms
// If interleave duration is too small, it is very inefficient to do
// interleaving since the metadata overhead will count for a significant
// portion of the saved contents
ALOGE("Audio/video interleave duration is too small: %d us", durationUs);
return BAD_VALUE;
} else if (durationUs >= 10000000) { // 10 seconds
// If interleaving duration is too large, it can cause the recording
// session to use too much memory since we have to save the output
// data before we write them out
ALOGE("Audio/video interleave duration is too large: %d us", durationUs);
return BAD_VALUE;
}
mInterleaveDurationUs = durationUs;
return OK;
}
// If seconds < 0, only the first frame is I frame, and rest are all P frames
// If seconds == 0, all frames are encoded as I frames. No P frames
// If seconds > 0, it is the time spacing (seconds) between 2 neighboring I frames
status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t seconds) {
ALOGV("setParamVideoIFramesInterval: %d seconds", seconds);
mIFramesIntervalSec = seconds;
return OK;
}
status_t StagefrightRecorder::setParam64BitFileOffset(bool use64Bit) {
ALOGV("setParam64BitFileOffset: %s",
use64Bit? "use 64 bit file offset": "use 32 bit file offset");
mUse64BitFileOffset = use64Bit;
return OK;
}
status_t StagefrightRecorder::setParamVideoCameraId(int32_t cameraId) {
ALOGV("setParamVideoCameraId: %d", cameraId);
if (cameraId < 0) {
return BAD_VALUE;
}
mCameraId = cameraId;
return OK;
}
status_t StagefrightRecorder::setParamTrackTimeStatus(int64_t timeDurationUs) {
ALOGV("setParamTrackTimeStatus: %lld", (long long)timeDurationUs);
if (timeDurationUs < 20000) { // Infeasible if shorter than 20 ms?
ALOGE("Tracking time duration too short: %lld us", (long long)timeDurationUs);
return BAD_VALUE;
}
mTrackEveryTimeDurationUs = timeDurationUs;
return OK;
}
status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
ALOGV("setParamVideoEncoderProfile: %d", profile);
// Additional check will be done later when we load the encoder.
// For now, we are accepting values defined in OpenMAX IL.
mVideoEncoderProfile = profile;
return OK;
}
status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
ALOGV("setParamVideoEncoderLevel: %d", level);
// Additional check will be done later when we load the encoder.
// For now, we are accepting values defined in OpenMAX IL.
mVideoEncoderLevel = level;
return OK;
}
status_t StagefrightRecorder::setParamMovieTimeScale(int32_t timeScale) {
ALOGV("setParamMovieTimeScale: %d", timeScale);
// The range is set to be the same as the audio's time scale range
// since audio's time scale has a wider range.
if (timeScale < 600 || timeScale > 96000) {
ALOGE("Time scale (%d) for movie is out of range [600, 96000]", timeScale);
return BAD_VALUE;
}
mMovieTimeScale = timeScale;
return OK;
}
status_t StagefrightRecorder::setParamVideoTimeScale(int32_t timeScale) {
ALOGV("setParamVideoTimeScale: %d", timeScale);
// 60000 is chosen to make sure that each video frame from a 60-fps
// video has 1000 ticks.
if (timeScale < 600 || timeScale > 60000) {
ALOGE("Time scale (%d) for video is out of range [600, 60000]", timeScale);
return BAD_VALUE;
}
mVideoTimeScale = timeScale;
return OK;
}
status_t StagefrightRecorder::setParamAudioTimeScale(int32_t timeScale) {
ALOGV("setParamAudioTimeScale: %d", timeScale);
// 96000 Hz is the highest sampling rate support in AAC.
if (timeScale < 600 || timeScale > 96000) {
ALOGE("Time scale (%d) for audio is out of range [600, 96000]", timeScale);
return BAD_VALUE;
}
mAudioTimeScale = timeScale;
return OK;
}
status_t StagefrightRecorder::setParamCaptureFpsEnable(int32_t captureFpsEnable) {
ALOGV("setParamCaptureFpsEnable: %d", captureFpsEnable);
if(captureFpsEnable == 0) {
mCaptureFpsEnable = false;
} else if (captureFpsEnable == 1) {
mCaptureFpsEnable = true;
} else {
return BAD_VALUE;
}
return OK;
}
status_t StagefrightRecorder::setParamCaptureFps(double fps) {
ALOGV("setParamCaptureFps: %.2f", fps);
if (!(fps >= 1.0 / 86400)) {
ALOGE("FPS is too small");
return BAD_VALUE;
}
mCaptureFps = fps;
return OK;
}
status_t StagefrightRecorder::setParamGeoDataLongitude(
int64_t longitudex10000) {
if (longitudex10000 > 1800000 || longitudex10000 < -1800000) {
return BAD_VALUE;
}
mLongitudex10000 = longitudex10000;
return OK;
}
status_t StagefrightRecorder::setParamGeoDataLatitude(
int64_t latitudex10000) {
if (latitudex10000 > 900000 || latitudex10000 < -900000) {
return BAD_VALUE;
}
mLatitudex10000 = latitudex10000;
return OK;
}
status_t StagefrightRecorder::setParameter(
const String8 &key, const String8 &value) {
ALOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
if (key == "max-duration") {
int64_t max_duration_ms;
if (safe_strtoi64(value.string(), &max_duration_ms)) {
return setParamMaxFileDurationUs(1000LL * max_duration_ms);
}
} else if (key == "max-filesize") {
int64_t max_filesize_bytes;
if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
return setParamMaxFileSizeBytes(max_filesize_bytes);
}
} else if (key == "interleave-duration-us") {
int32_t durationUs;
if (safe_strtoi32(value.string(), &durationUs)) {
return setParamInterleaveDuration(durationUs);
}
} else if (key == "param-movie-time-scale") {
int32_t timeScale;
if (safe_strtoi32(value.string(), &timeScale)) {
return setParamMovieTimeScale(timeScale);
}
} else if (key == "param-use-64bit-offset") {
int32_t use64BitOffset;
if (safe_strtoi32(value.string(), &use64BitOffset)) {
return setParam64BitFileOffset(use64BitOffset != 0);
}
} else if (key == "param-geotag-longitude") {
int64_t longitudex10000;
if (safe_strtoi64(value.string(), &longitudex10000)) {
return setParamGeoDataLongitude(longitudex10000);
}
} else if (key == "param-geotag-latitude") {
int64_t latitudex10000;
if (safe_strtoi64(value.string(), &latitudex10000)) {
return setParamGeoDataLatitude(latitudex10000);
}
} else if (key == "param-track-time-status") {
int64_t timeDurationUs;
if (safe_strtoi64(value.string(), &timeDurationUs)) {
return setParamTrackTimeStatus(timeDurationUs);
}
} else if (key == "audio-param-sampling-rate") {
int32_t sampling_rate;
if (safe_strtoi32(value.string(), &sampling_rate)) {
return setParamAudioSamplingRate(sampling_rate);
}
} else if (key == "audio-param-number-of-channels") {
int32_t number_of_channels;
if (safe_strtoi32(value.string(), &number_of_channels)) {
return setParamAudioNumberOfChannels(number_of_channels);
}
} else if (key == "audio-param-encoding-bitrate") {
int32_t audio_bitrate;
if (safe_strtoi32(value.string(), &audio_bitrate)) {
return setParamAudioEncodingBitRate(audio_bitrate);
}
} else if (key == "audio-param-time-scale") {
int32_t timeScale;
if (safe_strtoi32(value.string(), &timeScale)) {
return setParamAudioTimeScale(timeScale);
}
} else if (key == "video-param-encoding-bitrate") {
int32_t video_bitrate;
if (safe_strtoi32(value.string(), &video_bitrate)) {
return setParamVideoEncodingBitRate(video_bitrate);
}
} else if (key == "video-param-rotation-angle-degrees") {
int32_t degrees;
if (safe_strtoi32(value.string(), °rees)) {
return setParamVideoRotation(degrees);
}
} else if (key == "video-param-i-frames-interval") {
int32_t seconds;
if (safe_strtoi32(value.string(), &seconds)) {
return setParamVideoIFramesInterval(seconds);
}
} else if (key == "video-param-encoder-profile") {
int32_t profile;
if (safe_strtoi32(value.string(), &profile)) {
return setParamVideoEncoderProfile(profile);
}
} else if (key == "video-param-encoder-level") {
int32_t level;
if (safe_strtoi32(value.string(), &level)) {
return setParamVideoEncoderLevel(level);
}
} else if (key == "video-param-camera-id") {
int32_t cameraId;
if (safe_strtoi32(value.string(), &cameraId)) {
return setParamVideoCameraId(cameraId);
}
} else if (key == "video-param-time-scale") {
int32_t timeScale;
if (safe_strtoi32(value.string(), &timeScale)) {
return setParamVideoTimeScale(timeScale);
}
} else if (key == "time-lapse-enable") {
int32_t captureFpsEnable;
if (safe_strtoi32(value.string(), &captureFpsEnable)) {
return setParamCaptureFpsEnable(captureFpsEnable);
}
} else if (key == "time-lapse-fps") {
double fps;
if (safe_strtod(value.string(), &fps)) {
return setParamCaptureFps(fps);
}
} else {
ALOGE("setParameter: failed to find key %s", key.string());
}
return BAD_VALUE;
}
status_t StagefrightRecorder::setParameters(const String8 ¶ms) {
ALOGV("setParameters: %s", params.string());
const char *cparams = params.string();
const char *key_start = cparams;
for (;;) {
const char *equal_pos = strchr(key_start, '=');
if (equal_pos == NULL) {
ALOGE("Parameters %s miss a value", cparams);
return BAD_VALUE;
}
String8 key(key_start, equal_pos - key_start);
TrimString(&key);
if (key.length() == 0) {
ALOGE("Parameters %s contains an empty key", cparams);
return BAD_VALUE;
}
const char *value_start = equal_pos + 1;
const char *semicolon_pos = strchr(value_start, ';');
String8 value;
if (semicolon_pos == NULL) {
value.setTo(value_start);
} else {
value.setTo(value_start, semicolon_pos - value_start);
}
if (setParameter(key, value) != OK) {
return BAD_VALUE;
}
if (semicolon_pos == NULL) {
break; // Reaches the end
}
key_start = semicolon_pos + 1;
}
return OK;
}
status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
mListener = listener;
return OK;
}
status_t StagefrightRecorder::setClientName(const String16& clientName) {
mClientName = clientName;
return OK;
}
status_t StagefrightRecorder::prepareInternal() {
ALOGV("prepare");
if (mOutputFd < 0) {
ALOGE("Output file descriptor is invalid");
return INVALID_OPERATION;
}
// Get UID and PID here for permission checking
mClientUid = IPCThreadState::self()->getCallingUid();
mClientPid = IPCThreadState::self()->getCallingPid();
status_t status = OK;
switch (mOutputFormat) {
case OUTPUT_FORMAT_DEFAULT:
case OUTPUT_FORMAT_THREE_GPP:
case OUTPUT_FORMAT_MPEG_4:
case OUTPUT_FORMAT_WEBM:
status = setupMPEG4orWEBMRecording();
break;
case OUTPUT_FORMAT_AMR_NB:
case OUTPUT_FORMAT_AMR_WB:
status = setupAMRRecording();
break;
case OUTPUT_FORMAT_AAC_ADIF:
case OUTPUT_FORMAT_AAC_ADTS:
status = setupAACRecording();
break;
case OUTPUT_FORMAT_RTP_AVP:
status = setupRTPRecording();
break;
case OUTPUT_FORMAT_MPEG2TS:
status = setupMPEG2TSRecording();
break;
default:
ALOGE("Unsupported output file format: %d", mOutputFormat);
status = UNKNOWN_ERROR;
break;
}
ALOGV("Recording frameRate: %d captureFps: %f",
mFrameRate, mCaptureFps);
return status;
}
status_t StagefrightRecorder::prepare() {
ALOGV("prepare");
Mutex::Autolock autolock(mLock);
if (mVideoSource == VIDEO_SOURCE_SURFACE) {
return prepareInternal();
}
return OK;
}
status_t StagefrightRecorder::start() {
ALOGV("start");
Mutex::Autolock autolock(mLock);
if (mOutputFd < 0) {
ALOGE("Output file descriptor is invalid");
return INVALID_OPERATION;
}
status_t status = OK;
if (mVideoSource != VIDEO_SOURCE_SURFACE) {
status = prepareInternal();
if (status != OK) {
return status;
}
}
if (mWriter == NULL) {
ALOGE("File writer is not avaialble");
return UNKNOWN_ERROR;
}
switch (mOutputFormat) {
case OUTPUT_FORMAT_DEFAULT:
case OUTPUT_FORMAT_THREE_GPP:
case OUTPUT_FORMAT_MPEG_4:
case OUTPUT_FORMAT_WEBM:
{
bool isMPEG4 = true;
if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
isMPEG4 = false;
}
sp<MetaData> meta = new MetaData;
setupMPEG4orWEBMMetaData(&meta);
status = mWriter->start(meta.get());
break;
}
case OUTPUT_FORMAT_AMR_NB:
case OUTPUT_FORMAT_AMR_WB:
case OUTPUT_FORMAT_AAC_ADIF:
case OUTPUT_FORMAT_AAC_ADTS:
case OUTPUT_FORMAT_RTP_AVP:
case OUTPUT_FORMAT_MPEG2TS:
{
sp<MetaData> meta = new MetaData;
int64_t startTimeUs = systemTime() / 1000;
meta->setInt64(kKeyTime, startTimeUs);
status = mWriter->start(meta.get());
break;
}
default:
{
ALOGE("Unsupported output file format: %d", mOutputFormat);
status = UNKNOWN_ERROR;
break;
}
}
if (status != OK) {
mWriter.clear();
mWriter = NULL;
}
if ((status == OK) && (!mStarted)) {
mAnalyticsDirty = true;
mStarted = true;
uint32_t params = IMediaPlayerService::kBatteryDataCodecStarted;
if (mAudioSource != AUDIO_SOURCE_CNT) {
params |= IMediaPlayerService::kBatteryDataTrackAudio;
}
if (mVideoSource != VIDEO_SOURCE_LIST_END) {
params |= IMediaPlayerService::kBatteryDataTrackVideo;
}
addBatteryData(params);
}
return status;
}
sp<MediaCodecSource> StagefrightRecorder::createAudioSource() {
int32_t sourceSampleRate = mSampleRate;
if (mCaptureFpsEnable && mCaptureFps >= mFrameRate) {
// Upscale the sample rate for slow motion recording.
// Fail audio source creation if source sample rate is too high, as it could
// cause out-of-memory due to large input buffer size. And audio recording
// probably doesn't make sense in the scenario, since the slow-down factor
// is probably huge (eg. mSampleRate=48K, mCaptureFps=240, mFrameRate=1).
const static int32_t SAMPLE_RATE_HZ_MAX = 192000;
sourceSampleRate =
(mSampleRate * mCaptureFps + mFrameRate / 2) / mFrameRate;
if (sourceSampleRate < mSampleRate || sourceSampleRate > SAMPLE_RATE_HZ_MAX) {
ALOGE("source sample rate out of range! "
"(mSampleRate %d, mCaptureFps %.2f, mFrameRate %d",
mSampleRate, mCaptureFps, mFrameRate);
return NULL;
}
}
sp<AudioSource> audioSource =
new AudioSource(
mAudioSource,
mOpPackageName,
sourceSampleRate,
mAudioChannels,
mSampleRate,
mClientUid,
mClientPid);
status_t err = audioSource->initCheck();
if (err != OK) {
ALOGE("audio source is not initialized");
return NULL;
}
sp<AMessage> format = new AMessage;
switch (mAudioEncoder) {
case AUDIO_ENCODER_AMR_NB:
case AUDIO_ENCODER_DEFAULT:
format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_NB);
break;
case AUDIO_ENCODER_AMR_WB:
format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_WB);
break;
case AUDIO_ENCODER_AAC:
format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
format->setInt32("aac-profile", OMX_AUDIO_AACObjectLC);
break;
case AUDIO_ENCODER_HE_AAC:
format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
format->setInt32("aac-profile", OMX_AUDIO_AACObjectHE);
break;
case AUDIO_ENCODER_AAC_ELD:
format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
format->setInt32("aac-profile", OMX_AUDIO_AACObjectELD);
break;
default:
ALOGE("Unknown audio encoder: %d", mAudioEncoder);
return NULL;
}
int32_t maxInputSize;
CHECK(audioSource->getFormat()->findInt32(
kKeyMaxInputSize, &maxInputSize));
format->setInt32("max-input-size", maxInputSize);
format->setInt32("channel-count", mAudioChannels);
format->setInt32("sample-rate", mSampleRate);
format->setInt32("bitrate", mAudioBitRate);
if (mAudioTimeScale > 0) {
format->setInt32("time-scale", mAudioTimeScale);
}
format->setInt32("priority", 0 /* realtime */);
sp<MediaCodecSource> audioEncoder =
MediaCodecSource::Create(mLooper, format, audioSource);
mAudioSourceNode = audioSource;
if (audioEncoder == NULL) {
ALOGE("Failed to create audio encoder");
}
return audioEncoder;
}
status_t StagefrightRecorder::setupAACRecording() {
// FIXME:
// Add support for OUTPUT_FORMAT_AAC_ADIF
CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_AAC_ADTS);
CHECK(mAudioEncoder == AUDIO_ENCODER_AAC ||
mAudioEncoder == AUDIO_ENCODER_HE_AAC ||
mAudioEncoder == AUDIO_ENCODER_AAC_ELD);
CHECK(mAudioSource != AUDIO_SOURCE_CNT);
mWriter = new AACWriter(mOutputFd);
return setupRawAudioRecording();
}
status_t StagefrightRecorder::setupAMRRecording() {
CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
mOutputFormat == OUTPUT_FORMAT_AMR_WB);
if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
ALOGE("Invalid encoder %d used for AMRNB recording",
mAudioEncoder);
return BAD_VALUE;
}
} else { // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
ALOGE("Invlaid encoder %d used for AMRWB recording",
mAudioEncoder);
return BAD_VALUE;
}
}
mWriter = new AMRWriter(mOutputFd);
return setupRawAudioRecording();
}
status_t StagefrightRecorder::setupRawAudioRecording() {
if (mAudioSource >= AUDIO_SOURCE_CNT && mAudioSource != AUDIO_SOURCE_FM_TUNER) {
ALOGE("Invalid audio source: %d", mAudioSource);
return BAD_VALUE;
}
status_t status = BAD_VALUE;
if (OK != (status = checkAudioEncoderCapabilities())) {
return status;
}
sp<MediaCodecSource> audioEncoder = createAudioSource();
if (audioEncoder == NULL) {
return UNKNOWN_ERROR;
}
CHECK(mWriter != 0);
mWriter->addSource(audioEncoder);
mAudioEncoderSource = audioEncoder;
if (mMaxFileDurationUs != 0) {
mWriter->setMaxFileDuration(mMaxFileDurationUs);
}
if (mMaxFileSizeBytes != 0) {
mWriter->setMaxFileSize(mMaxFileSizeBytes);
}
mWriter->setListener(mListener);
return OK;
}
status_t StagefrightRecorder::setupRTPRecording() {
CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_RTP_AVP);
if ((mAudioSource != AUDIO_SOURCE_CNT
&& mVideoSource != VIDEO_SOURCE_LIST_END)
|| (mAudioSource == AUDIO_SOURCE_CNT
&& mVideoSource == VIDEO_SOURCE_LIST_END)) {
// Must have exactly one source.
return BAD_VALUE;
}
if (mOutputFd < 0) {
return BAD_VALUE;
}
sp<MediaCodecSource> source;
if (mAudioSource != AUDIO_SOURCE_CNT) {
source = createAudioSource();
mAudioEncoderSource = source;
} else {
setDefaultVideoEncoderIfNecessary();
sp<MediaSource> mediaSource;
status_t err = setupMediaSource(&mediaSource);
if (err != OK) {
return err;
}
err = setupVideoEncoder(mediaSource, &source);
if (err != OK) {
return err;
}
mVideoEncoderSource = source;
}
mWriter = new ARTPWriter(mOutputFd);
mWriter->addSource(source);
mWriter->setListener(mListener);
return OK;
}
status_t StagefrightRecorder::setupMPEG2TSRecording() {
CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_MPEG2TS);
sp<MediaWriter> writer = new MPEG2TSWriter(mOutputFd);
if (mAudioSource != AUDIO_SOURCE_CNT) {
if (mAudioEncoder != AUDIO_ENCODER_AAC &&
mAudioEncoder != AUDIO_ENCODER_HE_AAC &&
mAudioEncoder != AUDIO_ENCODER_AAC_ELD) {
return ERROR_UNSUPPORTED;
}
status_t err = setupAudioEncoder(writer);
if (err != OK) {
return err;
}
}
if (mVideoSource < VIDEO_SOURCE_LIST_END) {
if (mVideoEncoder != VIDEO_ENCODER_H264) {
ALOGE("MPEG2TS recording only supports H.264 encoding!");
return ERROR_UNSUPPORTED;
}
sp<MediaSource> mediaSource;
status_t err = setupMediaSource(&mediaSource);
if (err != OK) {
return err;
}
sp<MediaCodecSource> encoder;
err = setupVideoEncoder(mediaSource, &encoder);
if (err != OK) {
return err;
}
writer->addSource(encoder);
mVideoEncoderSource = encoder;
}
if (mMaxFileDurationUs != 0) {
writer->setMaxFileDuration(mMaxFileDurationUs);
}
if (mMaxFileSizeBytes != 0) {
writer->setMaxFileSize(mMaxFileSizeBytes);
}
mWriter = writer;
return OK;
}
void StagefrightRecorder::clipVideoFrameRate() {
ALOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
if (mFrameRate == -1) {
mFrameRate = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.fps", mCameraId, CAMCORDER_QUALITY_LOW);
ALOGW("Using default video fps %d", mFrameRate);
}
int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.fps.min", mVideoEncoder);
int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.fps.max", mVideoEncoder);
if (mFrameRate < minFrameRate && minFrameRate != -1) {
ALOGW("Intended video encoding frame rate (%d fps) is too small"
" and will be set to (%d fps)", mFrameRate, minFrameRate);
mFrameRate = minFrameRate;
} else if (mFrameRate > maxFrameRate && maxFrameRate != -1) {
ALOGW("Intended video encoding frame rate (%d fps) is too large"
" and will be set to (%d fps)", mFrameRate, maxFrameRate);
mFrameRate = maxFrameRate;
}
}
void StagefrightRecorder::clipVideoBitRate() {
ALOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.bps.min", mVideoEncoder);
int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.bps.max", mVideoEncoder);
if (mVideoBitRate < minBitRate && minBitRate != -1) {
ALOGW("Intended video encoding bit rate (%d bps) is too small"
" and will be set to (%d bps)", mVideoBitRate, minBitRate);
mVideoBitRate = minBitRate;
} else if (mVideoBitRate > maxBitRate && maxBitRate != -1) {
ALOGW("Intended video encoding bit rate (%d bps) is too large"
" and will be set to (%d bps)", mVideoBitRate, maxBitRate);
mVideoBitRate = maxBitRate;
}
}
void StagefrightRecorder::clipVideoFrameWidth() {
ALOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.width.min", mVideoEncoder);
int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.width.max", mVideoEncoder);
if (mVideoWidth < minFrameWidth && minFrameWidth != -1) {
ALOGW("Intended video encoding frame width (%d) is too small"
" and will be set to (%d)", mVideoWidth, minFrameWidth);
mVideoWidth = minFrameWidth;
} else if (mVideoWidth > maxFrameWidth && maxFrameWidth != -1) {
ALOGW("Intended video encoding frame width (%d) is too large"
" and will be set to (%d)", mVideoWidth, maxFrameWidth);
mVideoWidth = maxFrameWidth;
}
}
status_t StagefrightRecorder::checkVideoEncoderCapabilities() {
if (!mCaptureFpsEnable) {
// Dont clip for time lapse capture as encoder will have enough
// time to encode because of slow capture rate of time lapse.
clipVideoBitRate();
clipVideoFrameRate();
clipVideoFrameWidth();
clipVideoFrameHeight();
setDefaultProfileIfNecessary();
}
return OK;
}
// Set to use AVC baseline profile if the encoding parameters matches
// CAMCORDER_QUALITY_LOW profile; this is for the sake of MMS service.
void StagefrightRecorder::setDefaultProfileIfNecessary() {
ALOGV("setDefaultProfileIfNecessary");
camcorder_quality quality = CAMCORDER_QUALITY_LOW;
int64_t durationUs = mEncoderProfiles->getCamcorderProfileParamByName(
"duration", mCameraId, quality) * 1000000LL;
int fileFormat = mEncoderProfiles->getCamcorderProfileParamByName(
"file.format", mCameraId, quality);
int videoCodec = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.codec", mCameraId, quality);
int videoBitRate = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.bps", mCameraId, quality);
int videoFrameRate = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.fps", mCameraId, quality);
int videoFrameWidth = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.width", mCameraId, quality);
int videoFrameHeight = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.height", mCameraId, quality);
int audioCodec = mEncoderProfiles->getCamcorderProfileParamByName(
"aud.codec", mCameraId, quality);
int audioBitRate = mEncoderProfiles->getCamcorderProfileParamByName(
"aud.bps", mCameraId, quality);
int audioSampleRate = mEncoderProfiles->getCamcorderProfileParamByName(
"aud.hz", mCameraId, quality);
int audioChannels = mEncoderProfiles->getCamcorderProfileParamByName(
"aud.ch", mCameraId, quality);
if (durationUs == mMaxFileDurationUs &&
fileFormat == mOutputFormat &&
videoCodec == mVideoEncoder &&
videoBitRate == mVideoBitRate &&
videoFrameRate == mFrameRate &&
videoFrameWidth == mVideoWidth &&
videoFrameHeight == mVideoHeight &&
audioCodec == mAudioEncoder &&
audioBitRate == mAudioBitRate &&
audioSampleRate == mSampleRate &&
audioChannels == mAudioChannels) {
if (videoCodec == VIDEO_ENCODER_H264) {
ALOGI("Force to use AVC baseline profile");
setParamVideoEncoderProfile(OMX_VIDEO_AVCProfileBaseline);
// set 0 for invalid levels - this will be rejected by the
// codec if it cannot handle it during configure
setParamVideoEncoderLevel(ACodec::getAVCLevelFor(
videoFrameWidth, videoFrameHeight, videoFrameRate, videoBitRate));
}
}
}
void StagefrightRecorder::setDefaultVideoEncoderIfNecessary() {
if (mVideoEncoder == VIDEO_ENCODER_DEFAULT) {
if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
// default to VP8 for WEBM recording
mVideoEncoder = VIDEO_ENCODER_VP8;
} else {
// pick the default encoder for CAMCORDER_QUALITY_LOW
int videoCodec = mEncoderProfiles->getCamcorderProfileParamByName(
"vid.codec", mCameraId, CAMCORDER_QUALITY_LOW);
if (videoCodec > VIDEO_ENCODER_DEFAULT &&
videoCodec < VIDEO_ENCODER_LIST_END) {
mVideoEncoder = (video_encoder)videoCodec;
} else {
// default to H.264 if camcorder profile not available
mVideoEncoder = VIDEO_ENCODER_H264;
}
}
}
}
status_t StagefrightRecorder::checkAudioEncoderCapabilities() {
clipAudioBitRate();
clipAudioSampleRate();
clipNumberOfAudioChannels();
return OK;
}
void StagefrightRecorder::clipAudioBitRate() {
ALOGV("clipAudioBitRate: encoder %d", mAudioEncoder);
int minAudioBitRate =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.bps.min", mAudioEncoder);
if (minAudioBitRate != -1 && mAudioBitRate < minAudioBitRate) {
ALOGW("Intended audio encoding bit rate (%d) is too small"
" and will be set to (%d)", mAudioBitRate, minAudioBitRate);
mAudioBitRate = minAudioBitRate;
}
int maxAudioBitRate =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.bps.max", mAudioEncoder);
if (maxAudioBitRate != -1 && mAudioBitRate > maxAudioBitRate) {
ALOGW("Intended audio encoding bit rate (%d) is too large"
" and will be set to (%d)", mAudioBitRate, maxAudioBitRate);
mAudioBitRate = maxAudioBitRate;
}
}
void StagefrightRecorder::clipAudioSampleRate() {
ALOGV("clipAudioSampleRate: encoder %d", mAudioEncoder);
int minSampleRate =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.hz.min", mAudioEncoder);
if (minSampleRate != -1 && mSampleRate < minSampleRate) {
ALOGW("Intended audio sample rate (%d) is too small"
" and will be set to (%d)", mSampleRate, minSampleRate);
mSampleRate = minSampleRate;
}
int maxSampleRate =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.hz.max", mAudioEncoder);
if (maxSampleRate != -1 && mSampleRate > maxSampleRate) {
ALOGW("Intended audio sample rate (%d) is too large"
" and will be set to (%d)", mSampleRate, maxSampleRate);
mSampleRate = maxSampleRate;
}
}
void StagefrightRecorder::clipNumberOfAudioChannels() {
ALOGV("clipNumberOfAudioChannels: encoder %d", mAudioEncoder);
int minChannels =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.ch.min", mAudioEncoder);
if (minChannels != -1 && mAudioChannels < minChannels) {
ALOGW("Intended number of audio channels (%d) is too small"
" and will be set to (%d)", mAudioChannels, minChannels);
mAudioChannels = minChannels;
}
int maxChannels =
mEncoderProfiles->getAudioEncoderParamByName(
"enc.aud.ch.max", mAudioEncoder);
if (maxChannels != -1 && mAudioChannels > maxChannels) {
ALOGW("Intended number of audio channels (%d) is too large"
" and will be set to (%d)", mAudioChannels, maxChannels);
mAudioChannels = maxChannels;
}
}
void StagefrightRecorder::clipVideoFrameHeight() {
ALOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.height.min", mVideoEncoder);
int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
"enc.vid.height.max", mVideoEncoder);
if (minFrameHeight != -1 && mVideoHeight < minFrameHeight) {
ALOGW("Intended video encoding frame height (%d) is too small"
" and will be set to (%d)", mVideoHeight, minFrameHeight);
mVideoHeight = minFrameHeight;
} else if (maxFrameHeight != -1 && mVideoHeight > maxFrameHeight) {
ALOGW("Intended video encoding frame height (%d) is too large"
" and will be set to (%d)", mVideoHeight, maxFrameHeight);
mVideoHeight = maxFrameHeight;
}
}
// Set up the appropriate MediaSource depending on the chosen option
status_t StagefrightRecorder::setupMediaSource(
sp<MediaSource> *mediaSource) {
if (mVideoSource == VIDEO_SOURCE_DEFAULT
|| mVideoSource == VIDEO_SOURCE_CAMERA) {
sp<CameraSource> cameraSource;
status_t err = setupCameraSource(&cameraSource);
if (err != OK) {
return err;
}
*mediaSource = cameraSource;
} else if (mVideoSource == VIDEO_SOURCE_SURFACE) {
*mediaSource = NULL;
} else {
return INVALID_OPERATION;
}
return OK;
}
status_t StagefrightRecorder::setupCameraSource(
sp<CameraSource> *cameraSource) {
status_t err = OK;
if ((err = checkVideoEncoderCapabilities()) != OK) {
return err;
}
Size videoSize;
videoSize.width = mVideoWidth;
videoSize.height = mVideoHeight;
if (mCaptureFpsEnable) {
if (!(mCaptureFps > 0.)) {
ALOGE("Invalid mCaptureFps value: %lf", mCaptureFps);
return BAD_VALUE;
}
mCameraSourceTimeLapse = CameraSourceTimeLapse::CreateFromCamera(
mCamera, mCameraProxy, mCameraId, mClientName, mClientUid, mClientPid,
videoSize, mFrameRate, mPreviewSurface,
std::llround(1e6 / mCaptureFps));
*cameraSource = mCameraSourceTimeLapse;
} else {
*cameraSource = CameraSource::CreateFromCamera(
mCamera, mCameraProxy, mCameraId, mClientName, mClientUid, mClientPid,
videoSize, mFrameRate,
mPreviewSurface);
}
mCamera.clear();
mCameraProxy.clear();
if (*cameraSource == NULL) {
return UNKNOWN_ERROR;
}
if ((*cameraSource)->initCheck() != OK) {
(*cameraSource).clear();
*cameraSource = NULL;
return NO_INIT;
}
// When frame rate is not set, the actual frame rate will be set to
// the current frame rate being used.
if (mFrameRate == -1) {
int32_t frameRate = 0;
CHECK ((*cameraSource)->getFormat()->findInt32(
kKeyFrameRate, &frameRate));
ALOGI("Frame rate is not explicitly set. Use the current frame "
"rate (%d fps)", frameRate);
mFrameRate = frameRate;
}
CHECK(mFrameRate != -1);
mMetaDataStoredInVideoBuffers =
(*cameraSource)->metaDataStoredInVideoBuffers();
return OK;
}
status_t StagefrightRecorder::setupVideoEncoder(
const sp<MediaSource> &cameraSource,
sp<MediaCodecSource> *source) {
source->clear();
sp<AMessage> format = new AMessage();
switch (mVideoEncoder) {
case VIDEO_ENCODER_H263:
format->setString("mime", MEDIA_MIMETYPE_VIDEO_H263);
break;
case VIDEO_ENCODER_MPEG_4_SP:
format->setString("mime", MEDIA_MIMETYPE_VIDEO_MPEG4);
break;
case VIDEO_ENCODER_H264:
format->setString("mime", MEDIA_MIMETYPE_VIDEO_AVC);
break;
case VIDEO_ENCODER_VP8:
format->setString("mime", MEDIA_MIMETYPE_VIDEO_VP8);
break;
case VIDEO_ENCODER_HEVC:
format->setString("mime", MEDIA_MIMETYPE_VIDEO_HEVC);
break;
default:
CHECK(!"Should not be here, unsupported video encoding.");
break;
}
if (cameraSource != NULL) {
sp<MetaData> meta = cameraSource->getFormat();
int32_t width, height, stride, sliceHeight, colorFormat;
CHECK(meta->findInt32(kKeyWidth, &width));
CHECK(meta->findInt32(kKeyHeight, &height));
CHECK(meta->findInt32(kKeyStride, &stride));
CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
CHECK(meta->findInt32(kKeyColorFormat, &colorFormat));
format->setInt32("width", width);
format->setInt32("height", height);
format->setInt32("stride", stride);
format->setInt32("slice-height", sliceHeight);
format->setInt32("color-format", colorFormat);
} else {
format->setInt32("width", mVideoWidth);
format->setInt32("height", mVideoHeight);
format->setInt32("stride", mVideoWidth);
format->setInt32("slice-height", mVideoHeight);
format->setInt32("color-format", OMX_COLOR_FormatAndroidOpaque);
// set up time lapse/slow motion for surface source
if (mCaptureFpsEnable) {
if (!(mCaptureFps > 0.)) {
ALOGE("Invalid mCaptureFps value: %lf", mCaptureFps);
return BAD_VALUE;
}
format->setDouble("time-lapse-fps", mCaptureFps);
}
}
format->setInt32("bitrate", mVideoBitRate);
format->setInt32("frame-rate", mFrameRate);
format->setInt32("i-frame-interval", mIFramesIntervalSec);
if (mVideoTimeScale > 0) {
format->setInt32("time-scale", mVideoTimeScale);
}
if (mVideoEncoderProfile != -1) {
format->setInt32("profile", mVideoEncoderProfile);
}
if (mVideoEncoderLevel != -1) {
format->setInt32("level", mVideoEncoderLevel);
}
uint32_t tsLayers = 1;
bool preferBFrames = true; // we like B-frames as it produces better quality per bitrate
format->setInt32("priority", 0 /* realtime */);
float maxPlaybackFps = mFrameRate; // assume video is only played back at normal speed
if (mCaptureFpsEnable) {
format->setFloat("operating-rate", mCaptureFps);
// enable layering for all time lapse and high frame rate recordings
if (mFrameRate / mCaptureFps >= 1.9) { // time lapse
preferBFrames = false;
tsLayers = 2; // use at least two layers as resulting video will likely be sped up
} else if (mCaptureFps > maxPlaybackFps) { // slow-mo
maxPlaybackFps = mCaptureFps; // assume video will be played back at full capture speed
preferBFrames = false;
}
}
for (uint32_t tryLayers = 1; tryLayers <= kMaxNumVideoTemporalLayers; ++tryLayers) {
if (tryLayers > tsLayers) {
tsLayers = tryLayers;
}
// keep going until the base layer fps falls below the typical display refresh rate
float baseLayerFps = maxPlaybackFps / (1 << (tryLayers - 1));
if (baseLayerFps < kMinTypicalDisplayRefreshingRate / 0.9) {
break;
}
}
if (tsLayers > 1) {
uint32_t bLayers = std::min(2u, tsLayers - 1); // use up-to 2 B-layers
uint32_t pLayers = tsLayers - bLayers;
format->setString(
"ts-schema", AStringPrintf("android.generic.%u+%u", pLayers, bLayers));
// TODO: some encoders do not support B-frames with temporal layering, and we have a
// different preference based on use-case. We could move this into camera profiles.
format->setInt32("android._prefer-b-frames", preferBFrames);
}
if (mMetaDataStoredInVideoBuffers != kMetadataBufferTypeInvalid) {
format->setInt32("android._input-metadata-buffer-type", mMetaDataStoredInVideoBuffers);
}
uint32_t flags = 0;
if (cameraSource == NULL) {
flags |= MediaCodecSource::FLAG_USE_SURFACE_INPUT;
} else {
// require dataspace setup even if not using surface input
format->setInt32("android._using-recorder", 1);
}
sp<MediaCodecSource> encoder = MediaCodecSource::Create(
mLooper, format, cameraSource, mPersistentSurface, flags);
if (encoder == NULL) {
ALOGE("Failed to create video encoder");
// When the encoder fails to be created, we need
// release the camera source due to the camera's lock
// and unlock mechanism.
if (cameraSource != NULL) {
cameraSource->stop();
}
return UNKNOWN_ERROR;
}
if (cameraSource == NULL) {
mGraphicBufferProducer = encoder->getGraphicBufferProducer();
}
*source = encoder;
return OK;
}
status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
status_t status = BAD_VALUE;
if (OK != (status = checkAudioEncoderCapabilities())) {
return status;
}
switch(mAudioEncoder) {
case AUDIO_ENCODER_AMR_NB:
case AUDIO_ENCODER_AMR_WB:
case AUDIO_ENCODER_AAC:
case AUDIO_ENCODER_HE_AAC:
case AUDIO_ENCODER_AAC_ELD:
break;
default:
ALOGE("Unsupported audio encoder: %d", mAudioEncoder);
return UNKNOWN_ERROR;
}
sp<MediaCodecSource> audioEncoder = createAudioSource();
if (audioEncoder == NULL) {
return UNKNOWN_ERROR;
}
writer->addSource(audioEncoder);
mAudioEncoderSource = audioEncoder;
return OK;
}
status_t StagefrightRecorder::setupMPEG4orWEBMRecording() {
mWriter.clear();
mTotalBitRate = 0;
status_t err = OK;
sp<MediaWriter> writer;
sp<MPEG4Writer> mp4writer;
if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
writer = new WebmWriter(mOutputFd);
} else {
writer = mp4writer = new MPEG4Writer(mOutputFd);
}
if (mVideoSource < VIDEO_SOURCE_LIST_END) {
setDefaultVideoEncoderIfNecessary();
sp<MediaSource> mediaSource;
err = setupMediaSource(&mediaSource);
if (err != OK) {
return err;
}
sp<MediaCodecSource> encoder;
err = setupVideoEncoder(mediaSource, &encoder);
if (err != OK) {
return err;
}
writer->addSource(encoder);
mVideoEncoderSource = encoder;
mTotalBitRate += mVideoBitRate;
}
if (mOutputFormat != OUTPUT_FORMAT_WEBM) {
// Audio source is added at the end if it exists.
// This help make sure that the "recoding" sound is suppressed for
// camcorder applications in the recorded files.
// TODO Audio source is currently unsupported for webm output; vorbis encoder needed.
// disable audio for time lapse recording
bool disableAudio = mCaptureFpsEnable && mCaptureFps < mFrameRate;
if (!disableAudio && mAudioSource != AUDIO_SOURCE_CNT) {
err = setupAudioEncoder(writer);
if (err != OK) return err;
mTotalBitRate += mAudioBitRate;
}
if (mCaptureFpsEnable) {
mp4writer->setCaptureRate(mCaptureFps);
}
if (mInterleaveDurationUs > 0) {
mp4writer->setInterleaveDuration(mInterleaveDurationUs);
}
if (mLongitudex10000 > -3600000 && mLatitudex10000 > -3600000) {
mp4writer->setGeoData(mLatitudex10000, mLongitudex10000);
}
}
if (mMaxFileDurationUs != 0) {
writer->setMaxFileDuration(mMaxFileDurationUs);
}
if (mMaxFileSizeBytes != 0) {
writer->setMaxFileSize(mMaxFileSizeBytes);
}
if (mVideoSource == VIDEO_SOURCE_DEFAULT
|| mVideoSource == VIDEO_SOURCE_CAMERA) {
mStartTimeOffsetMs = mEncoderProfiles->getStartTimeOffsetMs(mCameraId);
} else if (mVideoSource == VIDEO_SOURCE_SURFACE) {
// surface source doesn't need large initial delay
mStartTimeOffsetMs = 200;
}
if (mStartTimeOffsetMs > 0) {
writer->setStartTimeOffsetMs(mStartTimeOffsetMs);
}
writer->setListener(mListener);
mWriter = writer;
return OK;
}
void StagefrightRecorder::setupMPEG4orWEBMMetaData(sp<MetaData> *meta) {
int64_t startTimeUs = systemTime() / 1000;
(*meta)->setInt64(kKeyTime, startTimeUs);
(*meta)->setInt32(kKeyFileType, mOutputFormat);
(*meta)->setInt32(kKeyBitRate, mTotalBitRate);
if (mMovieTimeScale > 0) {
(*meta)->setInt32(kKeyTimeScale, mMovieTimeScale);
}
if (mOutputFormat != OUTPUT_FORMAT_WEBM) {
(*meta)->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
if (mTrackEveryTimeDurationUs > 0) {
(*meta)->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
}
if (mRotationDegrees != 0) {
(*meta)->setInt32(kKeyRotation, mRotationDegrees);
}
}
}
status_t StagefrightRecorder::pause() {
ALOGV("pause");
if (!mStarted) {
return INVALID_OPERATION;
}
// Already paused --- no-op.
if (mPauseStartTimeUs != 0) {
return OK;
}
mPauseStartTimeUs = systemTime() / 1000;
sp<MetaData> meta = new MetaData;
meta->setInt64(kKeyTime, mPauseStartTimeUs);
if (mAudioEncoderSource != NULL) {
mAudioEncoderSource->pause();
}
if (mVideoEncoderSource != NULL) {
mVideoEncoderSource->pause(meta.get());
}
return OK;
}
status_t StagefrightRecorder::resume() {
ALOGV("resume");
if (!mStarted) {
return INVALID_OPERATION;
}
// Not paused --- no-op.
if (mPauseStartTimeUs == 0) {
return OK;
}
int64_t resumeStartTimeUs = systemTime() / 1000;
int64_t bufferStartTimeUs = 0;
bool allSourcesStarted = true;
for (const auto &source : { mAudioEncoderSource, mVideoEncoderSource }) {
if (source == nullptr) {
continue;
}
int64_t timeUs = source->getFirstSampleSystemTimeUs();
if (timeUs < 0) {
allSourcesStarted = false;
}
if (bufferStartTimeUs < timeUs) {
bufferStartTimeUs = timeUs;
}
}
if (allSourcesStarted) {
if (mPauseStartTimeUs < bufferStartTimeUs) {
mPauseStartTimeUs = bufferStartTimeUs;
}
// 30 ms buffer to avoid timestamp overlap
mTotalPausedDurationUs += resumeStartTimeUs - mPauseStartTimeUs - 30000;
}
double timeOffset = -mTotalPausedDurationUs;
if (mCaptureFpsEnable) {
timeOffset *= mCaptureFps / mFrameRate;
}
sp<MetaData> meta = new MetaData;
meta->setInt64(kKeyTime, resumeStartTimeUs);
for (const auto &source : { mAudioEncoderSource, mVideoEncoderSource }) {
if (source == nullptr) {
continue;
}
source->setInputBufferTimeOffset((int64_t)timeOffset);
source->start(meta.get());
}
mPauseStartTimeUs = 0;
return OK;
}
status_t StagefrightRecorder::stop() {
ALOGV("stop");
Mutex::Autolock autolock(mLock);
status_t err = OK;
if (mCaptureFpsEnable && mCameraSourceTimeLapse != NULL) {
mCameraSourceTimeLapse->startQuickReadReturns();
mCameraSourceTimeLapse = NULL;
}
if (mVideoEncoderSource != NULL) {
int64_t stopTimeUs = systemTime() / 1000;
sp<MetaData> meta = new MetaData;
err = mVideoEncoderSource->setStopStimeUs(stopTimeUs);
}
if (mWriter != NULL) {
err = mWriter->stop();
mWriter.clear();
}
resetMetrics();
mTotalPausedDurationUs = 0;
mPauseStartTimeUs = 0;
mGraphicBufferProducer.clear();
mPersistentSurface.clear();
mAudioEncoderSource.clear();
mVideoEncoderSource.clear();
if (mOutputFd >= 0) {
::close(mOutputFd);
mOutputFd = -1;
}
if (mStarted) {
mStarted = false;
uint32_t params = 0;
if (mAudioSource != AUDIO_SOURCE_CNT) {
params |= IMediaPlayerService::kBatteryDataTrackAudio;
}
if (mVideoSource != VIDEO_SOURCE_LIST_END) {
params |= IMediaPlayerService::kBatteryDataTrackVideo;
}
addBatteryData(params);
}
return err;
}
status_t StagefrightRecorder::close() {
ALOGV("close");
stop();
return OK;
}
status_t StagefrightRecorder::reset() {
ALOGV("reset");
stop();
// No audio or video source by default
mAudioSource = AUDIO_SOURCE_CNT;
mVideoSource = VIDEO_SOURCE_LIST_END;
// Default parameters
mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
mAudioEncoder = AUDIO_ENCODER_AMR_NB;
mVideoEncoder = VIDEO_ENCODER_DEFAULT;
mVideoWidth = 176;
mVideoHeight = 144;
mFrameRate = -1;
mVideoBitRate = 192000;
mSampleRate = 8000;
mAudioChannels = 1;
mAudioBitRate = 12200;
mInterleaveDurationUs = 0;
mIFramesIntervalSec = 1;
mAudioSourceNode = 0;
mUse64BitFileOffset = false;
mMovieTimeScale = -1;
mAudioTimeScale = -1;
mVideoTimeScale = -1;
mCameraId = 0;
mStartTimeOffsetMs = -1;
mVideoEncoderProfile = -1;
mVideoEncoderLevel = -1;
mMaxFileDurationUs = 0;
mMaxFileSizeBytes = 0;
mTrackEveryTimeDurationUs = 0;
mCaptureFpsEnable = false;
mCaptureFps = -1.0;
mCameraSourceTimeLapse = NULL;
mMetaDataStoredInVideoBuffers = kMetadataBufferTypeInvalid;
mEncoderProfiles = MediaProfiles::getInstance();
mRotationDegrees = 0;
mLatitudex10000 = -3600000;
mLongitudex10000 = -3600000;
mTotalBitRate = 0;
mOutputFd = -1;
return OK;
}
status_t StagefrightRecorder::getMaxAmplitude(int *max) {
ALOGV("getMaxAmplitude");
if (max == NULL) {
ALOGE("Null pointer argument");
return BAD_VALUE;
}
if (mAudioSourceNode != 0) {
*max = mAudioSourceNode->getMaxAmplitude();
} else {
*max = 0;
}
return OK;
}
status_t StagefrightRecorder::getMetrics(Parcel *reply) {
ALOGD("StagefrightRecorder::getMetrics");
if (reply == NULL) {
ALOGE("Null pointer argument");
return BAD_VALUE;
}
if (mAnalyticsItem == NULL) {
return UNKNOWN_ERROR;
}
updateMetrics();
mAnalyticsItem->writeToParcel(reply);
return OK;
}
status_t StagefrightRecorder::dump(
int fd, const Vector<String16>& args) const {
ALOGV("dump");
Mutex::Autolock autolock(mLock);
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
if (mWriter != 0) {
mWriter->dump(fd, args);
} else {
snprintf(buffer, SIZE, " No file writer\n");
result.append(buffer);
}
snprintf(buffer, SIZE, " Recorder: %p\n", this);
snprintf(buffer, SIZE, " Output file (fd %d):\n", mOutputFd);
result.append(buffer);
snprintf(buffer, SIZE, " File format: %d\n", mOutputFormat);
result.append(buffer);
snprintf(buffer, SIZE, " Max file size (bytes): %" PRId64 "\n", mMaxFileSizeBytes);
result.append(buffer);
snprintf(buffer, SIZE, " Max file duration (us): %" PRId64 "\n", mMaxFileDurationUs);
result.append(buffer);
snprintf(buffer, SIZE, " File offset length (bits): %d\n", mUse64BitFileOffset? 64: 32);
result.append(buffer);
snprintf(buffer, SIZE, " Interleave duration (us): %d\n", mInterleaveDurationUs);
result.append(buffer);
snprintf(buffer, SIZE, " Progress notification: %" PRId64 " us\n", mTrackEveryTimeDurationUs);
result.append(buffer);
snprintf(buffer, SIZE, " Audio\n");
result.append(buffer);
snprintf(buffer, SIZE, " Source: %d\n", mAudioSource);
result.append(buffer);
snprintf(buffer, SIZE, " Encoder: %d\n", mAudioEncoder);
result.append(buffer);
snprintf(buffer, SIZE, " Bit rate (bps): %d\n", mAudioBitRate);
result.append(buffer);
snprintf(buffer, SIZE, " Sampling rate (hz): %d\n", mSampleRate);
result.append(buffer);
snprintf(buffer, SIZE, " Number of channels: %d\n", mAudioChannels);
result.append(buffer);
snprintf(buffer, SIZE, " Max amplitude: %d\n", mAudioSourceNode == 0? 0: mAudioSourceNode->getMaxAmplitude());
result.append(buffer);
snprintf(buffer, SIZE, " Video\n");
result.append(buffer);
snprintf(buffer, SIZE, " Source: %d\n", mVideoSource);
result.append(buffer);
snprintf(buffer, SIZE, " Camera Id: %d\n", mCameraId);
result.append(buffer);
snprintf(buffer, SIZE, " Start time offset (ms): %d\n", mStartTimeOffsetMs);
result.append(buffer);
snprintf(buffer, SIZE, " Encoder: %d\n", mVideoEncoder);
result.append(buffer);
snprintf(buffer, SIZE, " Encoder profile: %d\n", mVideoEncoderProfile);
result.append(buffer);
snprintf(buffer, SIZE, " Encoder level: %d\n", mVideoEncoderLevel);
result.append(buffer);
snprintf(buffer, SIZE, " I frames interval (s): %d\n", mIFramesIntervalSec);
result.append(buffer);
snprintf(buffer, SIZE, " Frame size (pixels): %dx%d\n", mVideoWidth, mVideoHeight);
result.append(buffer);
snprintf(buffer, SIZE, " Frame rate (fps): %d\n", mFrameRate);
result.append(buffer);
snprintf(buffer, SIZE, " Bit rate (bps): %d\n", mVideoBitRate);
result.append(buffer);
::write(fd, result.string(), result.size());
return OK;
}
} // namespace android