From 10d07c88d69cc64f73a069163e7ea5ba2519a099 Mon Sep 17 00:00:00 2001 From: Justin Klaassen Date: Fri, 15 Sep 2017 17:58:39 -0400 Subject: Import Android SDK Platform PI [4335822] /google/data/ro/projects/android/fetch_artifact \ --bid 4335822 \ --target sdk_phone_armv7-win_sdk \ sdk-repo-linux-sources-4335822.zip AndroidVersion.ApiLevel has been modified to appear as 28 Change-Id: Ic8f04be005a71c2b9abeaac754d8da8d6f9a2c32 --- android/media/MediaRecorder.java | 1466 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 1466 insertions(+) create mode 100644 android/media/MediaRecorder.java (limited to 'android/media/MediaRecorder.java') diff --git a/android/media/MediaRecorder.java b/android/media/MediaRecorder.java new file mode 100644 index 00000000..59a124fa --- /dev/null +++ b/android/media/MediaRecorder.java @@ -0,0 +1,1466 @@ +/* + * Copyright (C) 2007 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. + */ + +package android.media; + +import android.annotation.NonNull; +import android.annotation.SystemApi; +import android.app.ActivityThread; +import android.hardware.Camera; +import android.os.Bundle; +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import android.os.PersistableBundle; +import android.util.Log; +import android.view.Surface; + +import java.io.File; +import java.io.FileDescriptor; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.lang.ref.WeakReference; + +/** + * Used to record audio and video. The recording control is based on a + * simple state machine (see below). + * + *

+ *

+ * + *

A common case of using MediaRecorder to record audio works as follows: + * + * 

MediaRecorder recorder = new MediaRecorder();
+ * recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
+ * recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
+ * recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
+ * recorder.setOutputFile(PATH_NAME);
+ * recorder.prepare();
+ * recorder.start();   // Recording is now started
+ * ...
+ * recorder.stop();
+ * recorder.reset();   // You can reuse the object by going back to setAudioSource() step
+ * recorder.release(); // Now the object cannot be reused
+ *
+ * + *

Applications may want to register for informational and error + * events in order to be informed of some internal update and possible + * runtime errors during recording. Registration for such events is + * done by setting the appropriate listeners (via calls + * (to {@link #setOnInfoListener(OnInfoListener)}setOnInfoListener and/or + * {@link #setOnErrorListener(OnErrorListener)}setOnErrorListener). + * In order to receive the respective callback associated with these listeners, + * applications are required to create MediaRecorder objects on threads with a + * Looper running (the main UI thread by default already has a Looper running). + * + *

Note: Currently, MediaRecorder does not work on the emulator. + * + *

+ *

Developer Guides

+ *

For more information about how to use MediaRecorder for recording video, read the + * Camera developer guide. + * For more information about how to use MediaRecorder for recording sound, read the + * Audio Capture developer guide.

+ *
+ */ +public class MediaRecorder +{ + static { + System.loadLibrary("media_jni"); + native_init(); + } + private final static String TAG = "MediaRecorder"; + + // The two fields below are accessed by native methods + @SuppressWarnings("unused") + private long mNativeContext; + + @SuppressWarnings("unused") + private Surface mSurface; + + private String mPath; + private FileDescriptor mFd; + private File mFile; + private EventHandler mEventHandler; + private OnErrorListener mOnErrorListener; + private OnInfoListener mOnInfoListener; + + /** + * Default constructor. + */ + public MediaRecorder() { + + Looper looper; + if ((looper = Looper.myLooper()) != null) { + mEventHandler = new EventHandler(this, looper); + } else if ((looper = Looper.getMainLooper()) != null) { + mEventHandler = new EventHandler(this, looper); + } else { + mEventHandler = null; + } + + String packageName = ActivityThread.currentPackageName(); + /* Native setup requires a weak reference to our object. + * It's easier to create it here than in C++. + */ + native_setup(new WeakReference(this), packageName, + ActivityThread.currentOpPackageName()); + } + + /** + * Sets a {@link android.hardware.Camera} to use for recording. + * + *

Use this function to switch quickly between preview and capture mode without a teardown of + * the camera object. {@link android.hardware.Camera#unlock()} should be called before + * this. Must call before {@link #prepare}.

+ * + * @param c the Camera to use for recording + * @deprecated Use {@link #getSurface} and the {@link android.hardware.camera2} API instead. + */ + @Deprecated + public native void setCamera(Camera c); + + /** + * Gets the surface to record from when using SURFACE video source. + * + *

May only be called after {@link #prepare}. Frames rendered to the Surface before + * {@link #start} will be discarded.

+ * + * @throws IllegalStateException if it is called before {@link #prepare}, after + * {@link #stop}, or is called when VideoSource is not set to SURFACE. + * @see android.media.MediaRecorder.VideoSource + */ + public native Surface getSurface(); + + /** + * Configures the recorder to use a persistent surface when using SURFACE video source. + *

May only be called before {@link #prepare}. If called, {@link #getSurface} should + * not be used and will throw IllegalStateException. Frames rendered to the Surface + * before {@link #start} will be discarded.

+ + * @param surface a persistent input surface created by + * {@link MediaCodec#createPersistentInputSurface} + * @throws IllegalStateException if it is called after {@link #prepare} and before + * {@link #stop}. + * @throws IllegalArgumentException if the surface was not created by + * {@link MediaCodec#createPersistentInputSurface}. + * @see MediaCodec#createPersistentInputSurface + * @see MediaRecorder.VideoSource + */ + public void setInputSurface(@NonNull Surface surface) { + if (!(surface instanceof MediaCodec.PersistentSurface)) { + throw new IllegalArgumentException("not a PersistentSurface"); + } + native_setInputSurface(surface); + } + + private native final void native_setInputSurface(@NonNull Surface surface); + + /** + * Sets a Surface to show a preview of recorded media (video). Calls this + * before prepare() to make sure that the desirable preview display is + * set. If {@link #setCamera(Camera)} is used and the surface has been + * already set to the camera, application do not need to call this. If + * this is called with non-null surface, the preview surface of the camera + * will be replaced by the new surface. If this method is called with null + * surface or not called at all, media recorder will not change the preview + * surface of the camera. + * + * @param sv the Surface to use for the preview + * @see android.hardware.Camera#setPreviewDisplay(android.view.SurfaceHolder) + */ + public void setPreviewDisplay(Surface sv) { + mSurface = sv; + } + + /** + * Defines the audio source. + * An audio source defines both a default physical source of audio signal, and a recording + * configuration. These constants are for instance used + * in {@link MediaRecorder#setAudioSource(int)} or + * {@link AudioRecord.Builder#setAudioSource(int)}. + */ + public final class AudioSource { + + private AudioSource() {} + + /** @hide */ + public final static int AUDIO_SOURCE_INVALID = -1; + + /* Do not change these values without updating their counterparts + * in system/media/audio/include/system/audio.h! + */ + + /** Default audio source **/ + public static final int DEFAULT = 0; + + /** Microphone audio source */ + public static final int MIC = 1; + + /** Voice call uplink (Tx) audio source. + *

+ * Capturing from VOICE_UPLINK source requires the + * {@link android.Manifest.permission#CAPTURE_AUDIO_OUTPUT} permission. + * This permission is reserved for use by system components and is not available to + * third-party applications. + *

+ */ + public static final int VOICE_UPLINK = 2; + + /** Voice call downlink (Rx) audio source. + *

+ * Capturing from VOICE_DOWNLINK source requires the + * {@link android.Manifest.permission#CAPTURE_AUDIO_OUTPUT} permission. + * This permission is reserved for use by system components and is not available to + * third-party applications. + *

+ */ + public static final int VOICE_DOWNLINK = 3; + + /** Voice call uplink + downlink audio source + *

+ * Capturing from VOICE_CALL source requires the + * {@link android.Manifest.permission#CAPTURE_AUDIO_OUTPUT} permission. + * This permission is reserved for use by system components and is not available to + * third-party applications. + *

+ */ + public static final int VOICE_CALL = 4; + + /** Microphone audio source tuned for video recording, with the same orientation + * as the camera if available. */ + public static final int CAMCORDER = 5; + + /** Microphone audio source tuned for voice recognition. */ + public static final int VOICE_RECOGNITION = 6; + + /** Microphone audio source tuned for voice communications such as VoIP. It + * will for instance take advantage of echo cancellation or automatic gain control + * if available. + */ + public static final int VOICE_COMMUNICATION = 7; + + /** + * Audio source for a submix of audio streams to be presented remotely. + *

+ * An application can use this audio source to capture a mix of audio streams + * that should be transmitted to a remote receiver such as a Wifi display. + * While recording is active, these audio streams are redirected to the remote + * submix instead of being played on the device speaker or headset. + *

+ * Certain streams are excluded from the remote submix, including + * {@link AudioManager#STREAM_RING}, {@link AudioManager#STREAM_ALARM}, + * and {@link AudioManager#STREAM_NOTIFICATION}. These streams will continue + * to be presented locally as usual. + *

+ * Capturing the remote submix audio requires the + * {@link android.Manifest.permission#CAPTURE_AUDIO_OUTPUT} permission. + * This permission is reserved for use by system components and is not available to + * third-party applications. + *

+ */ + public static final int REMOTE_SUBMIX = 8; + + /** Microphone audio source tuned for unprocessed (raw) sound if available, behaves like + * {@link #DEFAULT} otherwise. */ + public static final int UNPROCESSED = 9; + + /** + * Audio source for capturing broadcast radio tuner output. + * @hide + */ + @SystemApi + public static final int RADIO_TUNER = 1998; + + /** + * Audio source for preemptible, low-priority software hotword detection + * It presents the same gain and pre processing tuning as {@link #VOICE_RECOGNITION}. + *

+ * An application should use this audio source when it wishes to do + * always-on software hotword detection, while gracefully giving in to any other application + * that might want to read from the microphone. + *

+ * This is a hidden audio source. + * @hide + */ + @SystemApi + public static final int HOTWORD = 1999; + } + + // TODO make AudioSource static (API change) and move this method inside the AudioSource class + /** + * @hide + * @param source An audio source to test + * @return true if the source is only visible to system components + */ + public static boolean isSystemOnlyAudioSource(int source) { + switch(source) { + case AudioSource.DEFAULT: + case AudioSource.MIC: + case AudioSource.VOICE_UPLINK: + case AudioSource.VOICE_DOWNLINK: + case AudioSource.VOICE_CALL: + case AudioSource.CAMCORDER: + case AudioSource.VOICE_RECOGNITION: + case AudioSource.VOICE_COMMUNICATION: + //case REMOTE_SUBMIX: considered "system" as it requires system permissions + case AudioSource.UNPROCESSED: + return false; + default: + return true; + } + } + + /** @hide */ + public static final String toLogFriendlyAudioSource(int source) { + switch(source) { + case AudioSource.DEFAULT: + return "DEFAULT"; + case AudioSource.MIC: + return "MIC"; + case AudioSource.VOICE_UPLINK: + return "VOICE_UPLINK"; + case AudioSource.VOICE_DOWNLINK: + return "VOICE_DOWNLINK"; + case AudioSource.VOICE_CALL: + return "VOICE_CALL"; + case AudioSource.CAMCORDER: + return "CAMCORDER"; + case AudioSource.VOICE_RECOGNITION: + return "VOICE_RECOGNITION"; + case AudioSource.VOICE_COMMUNICATION: + return "VOICE_COMMUNICATION"; + case AudioSource.REMOTE_SUBMIX: + return "REMOTE_SUBMIX"; + case AudioSource.UNPROCESSED: + return "UNPROCESSED"; + case AudioSource.RADIO_TUNER: + return "RADIO_TUNER"; + case AudioSource.HOTWORD: + return "HOTWORD"; + case AudioSource.AUDIO_SOURCE_INVALID: + return "AUDIO_SOURCE_INVALID"; + default: + return "unknown source " + source; + } + } + + /** + * Defines the video source. These constants are used with + * {@link MediaRecorder#setVideoSource(int)}. + */ + public final class VideoSource { + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + private VideoSource() {} + public static final int DEFAULT = 0; + /** Camera video source + *

+ * Using the {@link android.hardware.Camera} API as video source. + *

+ */ + public static final int CAMERA = 1; + /** Surface video source + *

+ * Using a Surface as video source. + *

+ * This flag must be used when recording from an + * {@link android.hardware.camera2} API source. + *

+ * When using this video source type, use {@link MediaRecorder#getSurface()} + * to retrieve the surface created by MediaRecorder. + */ + public static final int SURFACE = 2; + } + + /** + * Defines the output format. These constants are used with + * {@link MediaRecorder#setOutputFormat(int)}. + */ + public final class OutputFormat { + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + private OutputFormat() {} + public static final int DEFAULT = 0; + /** 3GPP media file format*/ + public static final int THREE_GPP = 1; + /** MPEG4 media file format*/ + public static final int MPEG_4 = 2; + + /** The following formats are audio only .aac or .amr formats */ + + /** + * AMR NB file format + * @deprecated Deprecated in favor of MediaRecorder.OutputFormat.AMR_NB + */ + public static final int RAW_AMR = 3; + + /** AMR NB file format */ + public static final int AMR_NB = 3; + + /** AMR WB file format */ + public static final int AMR_WB = 4; + + /** @hide AAC ADIF file format */ + public static final int AAC_ADIF = 5; + + /** AAC ADTS file format */ + public static final int AAC_ADTS = 6; + + /** @hide Stream over a socket, limited to a single stream */ + public static final int OUTPUT_FORMAT_RTP_AVP = 7; + + /** H.264/AAC data encapsulated in MPEG2/TS */ + public static final int MPEG_2_TS = 8; + + /** VP8/VORBIS data in a WEBM container */ + public static final int WEBM = 9; + }; + + /** + * Defines the audio encoding. These constants are used with + * {@link MediaRecorder#setAudioEncoder(int)}. + */ + public final class AudioEncoder { + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + private AudioEncoder() {} + public static final int DEFAULT = 0; + /** AMR (Narrowband) audio codec */ + public static final int AMR_NB = 1; + /** AMR (Wideband) audio codec */ + public static final int AMR_WB = 2; + /** AAC Low Complexity (AAC-LC) audio codec */ + public static final int AAC = 3; + /** High Efficiency AAC (HE-AAC) audio codec */ + public static final int HE_AAC = 4; + /** Enhanced Low Delay AAC (AAC-ELD) audio codec */ + public static final int AAC_ELD = 5; + /** Ogg Vorbis audio codec */ + public static final int VORBIS = 6; + } + + /** + * Defines the video encoding. These constants are used with + * {@link MediaRecorder#setVideoEncoder(int)}. + */ + public final class VideoEncoder { + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + private VideoEncoder() {} + public static final int DEFAULT = 0; + public static final int H263 = 1; + public static final int H264 = 2; + public static final int MPEG_4_SP = 3; + public static final int VP8 = 4; + public static final int HEVC = 5; + } + + /** + * Sets the audio source to be used for recording. If this method is not + * called, the output file will not contain an audio track. The source needs + * to be specified before setting recording-parameters or encoders. Call + * this only before setOutputFormat(). + * + * @param audio_source the audio source to use + * @throws IllegalStateException if it is called after setOutputFormat() + * @see android.media.MediaRecorder.AudioSource + */ + public native void setAudioSource(int audio_source) + throws IllegalStateException; + + /** + * Gets the maximum value for audio sources. + * @see android.media.MediaRecorder.AudioSource + */ + public static final int getAudioSourceMax() { + return AudioSource.UNPROCESSED; + } + + /** + * Sets the video source to be used for recording. If this method is not + * called, the output file will not contain an video track. The source needs + * to be specified before setting recording-parameters or encoders. Call + * this only before setOutputFormat(). + * + * @param video_source the video source to use + * @throws IllegalStateException if it is called after setOutputFormat() + * @see android.media.MediaRecorder.VideoSource + */ + public native void setVideoSource(int video_source) + throws IllegalStateException; + + /** + * Uses the settings from a CamcorderProfile object for recording. This method should + * be called after the video AND audio sources are set, and before setOutputFile(). + * If a time lapse CamcorderProfile is used, audio related source or recording + * parameters are ignored. + * + * @param profile the CamcorderProfile to use + * @see android.media.CamcorderProfile + */ + public void setProfile(CamcorderProfile profile) { + setOutputFormat(profile.fileFormat); + setVideoFrameRate(profile.videoFrameRate); + setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight); + setVideoEncodingBitRate(profile.videoBitRate); + setVideoEncoder(profile.videoCodec); + if (profile.quality >= CamcorderProfile.QUALITY_TIME_LAPSE_LOW && + profile.quality <= CamcorderProfile.QUALITY_TIME_LAPSE_QVGA) { + // Nothing needs to be done. Call to setCaptureRate() enables + // time lapse video recording. + } else { + setAudioEncodingBitRate(profile.audioBitRate); + setAudioChannels(profile.audioChannels); + setAudioSamplingRate(profile.audioSampleRate); + setAudioEncoder(profile.audioCodec); + } + } + + /** + * Set video frame capture rate. This can be used to set a different video frame capture + * rate than the recorded video's playback rate. This method also sets the recording mode + * to time lapse. In time lapse video recording, only video is recorded. Audio related + * parameters are ignored when a time lapse recording session starts, if an application + * sets them. + * + * @param fps Rate at which frames should be captured in frames per second. + * The fps can go as low as desired. However the fastest fps will be limited by the hardware. + * For resolutions that can be captured by the video camera, the fastest fps can be computed using + * {@link android.hardware.Camera.Parameters#getPreviewFpsRange(int[])}. For higher + * resolutions the fastest fps may be more restrictive. + * Note that the recorder cannot guarantee that frames will be captured at the + * given rate due to camera/encoder limitations. However it tries to be as close as + * possible. + */ + public void setCaptureRate(double fps) { + // Make sure that time lapse is enabled when this method is called. + setParameter("time-lapse-enable=1"); + setParameter("time-lapse-fps=" + fps); + } + + /** + * Sets the orientation hint for output video playback. + * This method should be called before prepare(). This method will not + * trigger the source video frame to rotate during video recording, but to + * add a composition matrix containing the rotation angle in the output + * video if the output format is OutputFormat.THREE_GPP or + * OutputFormat.MPEG_4 so that a video player can choose the proper + * orientation for playback. Note that some video players may choose + * to ignore the compostion matrix in a video during playback. + * + * @param degrees the angle to be rotated clockwise in degrees. + * The supported angles are 0, 90, 180, and 270 degrees. + * @throws IllegalArgumentException if the angle is not supported. + * + */ + public void setOrientationHint(int degrees) { + if (degrees != 0 && + degrees != 90 && + degrees != 180 && + degrees != 270) { + throw new IllegalArgumentException("Unsupported angle: " + degrees); + } + setParameter("video-param-rotation-angle-degrees=" + degrees); + } + + /** + * Set and store the geodata (latitude and longitude) in the output file. + * This method should be called before prepare(). The geodata is + * stored in udta box if the output format is OutputFormat.THREE_GPP + * or OutputFormat.MPEG_4, and is ignored for other output formats. + * The geodata is stored according to ISO-6709 standard. + * + * @param latitude latitude in degrees. Its value must be in the + * range [-90, 90]. + * @param longitude longitude in degrees. Its value must be in the + * range [-180, 180]. + * + * @throws IllegalArgumentException if the given latitude or + * longitude is out of range. + * + */ + public void setLocation(float latitude, float longitude) { + int latitudex10000 = (int) (latitude * 10000 + 0.5); + int longitudex10000 = (int) (longitude * 10000 + 0.5); + + if (latitudex10000 > 900000 || latitudex10000 < -900000) { + String msg = "Latitude: " + latitude + " out of range."; + throw new IllegalArgumentException(msg); + } + if (longitudex10000 > 1800000 || longitudex10000 < -1800000) { + String msg = "Longitude: " + longitude + " out of range"; + throw new IllegalArgumentException(msg); + } + + setParameter("param-geotag-latitude=" + latitudex10000); + setParameter("param-geotag-longitude=" + longitudex10000); + } + + /** + * Sets the format of the output file produced during recording. Call this + * after setAudioSource()/setVideoSource() but before prepare(). + * + *

It is recommended to always use 3GP format when using the H.263 + * video encoder and AMR audio encoder. Using an MPEG-4 container format + * may confuse some desktop players.

+ * + * @param output_format the output format to use. The output format + * needs to be specified before setting recording-parameters or encoders. + * @throws IllegalStateException if it is called after prepare() or before + * setAudioSource()/setVideoSource(). + * @see android.media.MediaRecorder.OutputFormat + */ + public native void setOutputFormat(int output_format) + throws IllegalStateException; + + /** + * Sets the width and height of the video to be captured. Must be called + * after setVideoSource(). Call this after setOutFormat() but before + * prepare(). + * + * @param width the width of the video to be captured + * @param height the height of the video to be captured + * @throws IllegalStateException if it is called after + * prepare() or before setOutputFormat() + */ + public native void setVideoSize(int width, int height) + throws IllegalStateException; + + /** + * Sets the frame rate of the video to be captured. Must be called + * after setVideoSource(). Call this after setOutFormat() but before + * prepare(). + * + * @param rate the number of frames per second of video to capture + * @throws IllegalStateException if it is called after + * prepare() or before setOutputFormat(). + * + * NOTE: On some devices that have auto-frame rate, this sets the + * maximum frame rate, not a constant frame rate. Actual frame rate + * will vary according to lighting conditions. + */ + public native void setVideoFrameRate(int rate) throws IllegalStateException; + + /** + * Sets the maximum duration (in ms) of the recording session. + * Call this after setOutFormat() but before prepare(). + * After recording reaches the specified duration, a notification + * will be sent to the {@link android.media.MediaRecorder.OnInfoListener} + * with a "what" code of {@link #MEDIA_RECORDER_INFO_MAX_DURATION_REACHED} + * and recording will be stopped. Stopping happens asynchronously, there + * is no guarantee that the recorder will have stopped by the time the + * listener is notified. + * + * @param max_duration_ms the maximum duration in ms (if zero or negative, disables the duration limit) + * + */ + public native void setMaxDuration(int max_duration_ms) throws IllegalArgumentException; + + /** + * Sets the maximum filesize (in bytes) of the recording session. + * Call this after setOutFormat() but before prepare(). + * After recording reaches the specified filesize, a notification + * will be sent to the {@link android.media.MediaRecorder.OnInfoListener} + * with a "what" code of {@link #MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED} + * and recording will be stopped. Stopping happens asynchronously, there + * is no guarantee that the recorder will have stopped by the time the + * listener is notified. + * + * @param max_filesize_bytes the maximum filesize in bytes (if zero or negative, disables the limit) + * + */ + public native void setMaxFileSize(long max_filesize_bytes) throws IllegalArgumentException; + + /** + * Sets the audio encoder to be used for recording. If this method is not + * called, the output file will not contain an audio track. Call this after + * setOutputFormat() but before prepare(). + * + * @param audio_encoder the audio encoder to use. + * @throws IllegalStateException if it is called before + * setOutputFormat() or after prepare(). + * @see android.media.MediaRecorder.AudioEncoder + */ + public native void setAudioEncoder(int audio_encoder) + throws IllegalStateException; + + /** + * Sets the video encoder to be used for recording. If this method is not + * called, the output file will not contain an video track. Call this after + * setOutputFormat() and before prepare(). + * + * @param video_encoder the video encoder to use. + * @throws IllegalStateException if it is called before + * setOutputFormat() or after prepare() + * @see android.media.MediaRecorder.VideoEncoder + */ + public native void setVideoEncoder(int video_encoder) + throws IllegalStateException; + + /** + * Sets the audio sampling rate for recording. Call this method before prepare(). + * Prepare() may perform additional checks on the parameter to make sure whether + * the specified audio sampling rate is applicable. The sampling rate really depends + * on the format for the audio recording, as well as the capabilities of the platform. + * For instance, the sampling rate supported by AAC audio coding standard ranges + * from 8 to 96 kHz, the sampling rate supported by AMRNB is 8kHz, and the sampling + * rate supported by AMRWB is 16kHz. Please consult with the related audio coding + * standard for the supported audio sampling rate. + * + * @param samplingRate the sampling rate for audio in samples per second. + */ + public void setAudioSamplingRate(int samplingRate) { + if (samplingRate <= 0) { + throw new IllegalArgumentException("Audio sampling rate is not positive"); + } + setParameter("audio-param-sampling-rate=" + samplingRate); + } + + /** + * Sets the number of audio channels for recording. Call this method before prepare(). + * Prepare() may perform additional checks on the parameter to make sure whether the + * specified number of audio channels are applicable. + * + * @param numChannels the number of audio channels. Usually it is either 1 (mono) or 2 + * (stereo). + */ + public void setAudioChannels(int numChannels) { + if (numChannels <= 0) { + throw new IllegalArgumentException("Number of channels is not positive"); + } + setParameter("audio-param-number-of-channels=" + numChannels); + } + + /** + * Sets the audio encoding bit rate for recording. Call this method before prepare(). + * Prepare() may perform additional checks on the parameter to make sure whether the + * specified bit rate is applicable, and sometimes the passed bitRate will be clipped + * internally to ensure the audio recording can proceed smoothly based on the + * capabilities of the platform. + * + * @param bitRate the audio encoding bit rate in bits per second. + */ + public void setAudioEncodingBitRate(int bitRate) { + if (bitRate <= 0) { + throw new IllegalArgumentException("Audio encoding bit rate is not positive"); + } + setParameter("audio-param-encoding-bitrate=" + bitRate); + } + + /** + * Sets the video encoding bit rate for recording. Call this method before prepare(). + * Prepare() may perform additional checks on the parameter to make sure whether the + * specified bit rate is applicable, and sometimes the passed bitRate will be + * clipped internally to ensure the video recording can proceed smoothly based on + * the capabilities of the platform. + * + * @param bitRate the video encoding bit rate in bits per second. + */ + public void setVideoEncodingBitRate(int bitRate) { + if (bitRate <= 0) { + throw new IllegalArgumentException("Video encoding bit rate is not positive"); + } + setParameter("video-param-encoding-bitrate=" + bitRate); + } + + /** + * Sets the desired video encoding profile and level for recording. The profile and level + * must be valid for the video encoder set by {@link #setVideoEncoder}. This method can + * called before or after {@link #setVideoEncoder} but it must be called before {@link #prepare}. + * {@code prepare()} may perform additional checks on the parameter to make sure that the specified + * profile and level are applicable, and sometimes the passed profile or level will be + * discarded due to codec capablity or to ensure the video recording can proceed smoothly + * based on the capabilities of the platform.
Application can also use the + * {@link MediaCodecInfo.CodecCapabilities#profileLevels} to query applicable combination of profile + * and level for the corresponding format. Note that the requested profile/level may not be supported by + * the codec that is actually being used by this MediaRecorder instance. + * @param profile declared in {@link MediaCodecInfo.CodecProfileLevel}. + * @param level declared in {@link MediaCodecInfo.CodecProfileLevel}. + * @throws IllegalArgumentException when an invalid profile or level value is used. + */ + public void setVideoEncodingProfileLevel(int profile, int level) { + if (profile <= 0) { + throw new IllegalArgumentException("Video encoding profile is not positive"); + } + if (level <= 0) { + throw new IllegalArgumentException("Video encoding level is not positive"); + } + setParameter("video-param-encoder-profile=" + profile); + setParameter("video-param-encoder-level=" + level); + } + + /** + * Currently not implemented. It does nothing. + * @deprecated Time lapse mode video recording using camera still image capture + * is not desirable, and will not be supported. + * @hide + */ + public void setAuxiliaryOutputFile(FileDescriptor fd) + { + Log.w(TAG, "setAuxiliaryOutputFile(FileDescriptor) is no longer supported."); + } + + /** + * Currently not implemented. It does nothing. + * @deprecated Time lapse mode video recording using camera still image capture + * is not desirable, and will not be supported. + * @hide + */ + public void setAuxiliaryOutputFile(String path) + { + Log.w(TAG, "setAuxiliaryOutputFile(String) is no longer supported."); + } + + /** + * Pass in the file descriptor of the file to be written. Call this after + * setOutputFormat() but before prepare(). + * + * @param fd an open file descriptor to be written into. + * @throws IllegalStateException if it is called before + * setOutputFormat() or after prepare() + */ + public void setOutputFile(FileDescriptor fd) throws IllegalStateException + { + mPath = null; + mFile = null; + mFd = fd; + } + + /** + * Pass in the file object to be written. Call this after setOutputFormat() but before prepare(). + * File should be seekable. After setting the next output file, application should not use the + * file until {@link #stop}. Application is responsible for cleaning up unused files after + * {@link #stop} is called. + * + * @param file the file object to be written into. + */ + public void setOutputFile(File file) + { + mPath = null; + mFd = null; + mFile = file; + } + + /** + * Sets the next output file descriptor to be used when the maximum filesize is reached + * on the prior output {@link #setOutputFile} or {@link #setNextOutputFile}). File descriptor + * must be seekable and writable. After setting the next output file, application should not + * use the file referenced by this file descriptor until {@link #stop}. It is the application's + * responsibility to close the file descriptor. It is safe to do so as soon as this call returns. + * Application must call this after receiving on the + * {@link android.media.MediaRecorder.OnInfoListener} a "what" code of + * {@link #MEDIA_RECORDER_INFO_MAX_FILESIZE_APPROACHING} and before receiving a "what" code of + * {@link #MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED}. The file is not used until switching to + * that output. Application will receive{@link #MEDIA_RECORDER_INFO_NEXT_OUTPUT_FILE_STARTED} + * when the next output file is used. Application will not be able to set a new output file if + * the previous one has not been used. Application is responsible for cleaning up unused files + * after {@link #stop} is called. + * + * @param fd an open file descriptor to be written into. + * @throws IllegalStateException if it is called before prepare(). + * @throws IOException if setNextOutputFile fails otherwise. + */ + public void setNextOutputFile(FileDescriptor fd) throws IOException + { + _setNextOutputFile(fd); + } + + /** + * Sets the path of the output file to be produced. Call this after + * setOutputFormat() but before prepare(). + * + * @param path The pathname to use. + * @throws IllegalStateException if it is called before + * setOutputFormat() or after prepare() + */ + public void setOutputFile(String path) throws IllegalStateException + { + mFd = null; + mFile = null; + mPath = path; + } + + /** + * Sets the next output file to be used when the maximum filesize is reached on the prior + * output {@link #setOutputFile} or {@link #setNextOutputFile}). File should be seekable. + * After setting the next output file, application should not use the file until {@link #stop}. + * Application must call this after receiving on the + * {@link android.media.MediaRecorder.OnInfoListener} a "what" code of + * {@link #MEDIA_RECORDER_INFO_MAX_FILESIZE_APPROACHING} and before receiving a "what" code of + * {@link #MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED}. The file is not used until switching to + * that output. Application will receive {@link #MEDIA_RECORDER_INFO_NEXT_OUTPUT_FILE_STARTED} + * when the next output file is used. Application will not be able to set a new output file if + * the previous one has not been used. Application is responsible for cleaning up unused files + * after {@link #stop} is called. + * + * @param file The file to use. + * @throws IllegalStateException if it is called before prepare(). + * @throws IOException if setNextOutputFile fails otherwise. + */ + public void setNextOutputFile(File file) throws IOException + { + RandomAccessFile f = new RandomAccessFile(file, "rws"); + try { + _setNextOutputFile(f.getFD()); + } finally { + f.close(); + } + } + + // native implementation + private native void _setOutputFile(FileDescriptor fd) throws IllegalStateException, IOException; + private native void _setNextOutputFile(FileDescriptor fd) throws IllegalStateException, IOException; + private native void _prepare() throws IllegalStateException, IOException; + + /** + * Prepares the recorder to begin capturing and encoding data. This method + * must be called after setting up the desired audio and video sources, + * encoders, file format, etc., but before start(). + * + * @throws IllegalStateException if it is called after + * start() or before setOutputFormat(). + * @throws IOException if prepare fails otherwise. + */ + public void prepare() throws IllegalStateException, IOException + { + if (mPath != null) { + RandomAccessFile file = new RandomAccessFile(mPath, "rws"); + try { + _setOutputFile(file.getFD()); + } finally { + file.close(); + } + } else if (mFd != null) { + _setOutputFile(mFd); + } else if (mFile != null) { + RandomAccessFile file = new RandomAccessFile(mFile, "rws"); + try { + _setOutputFile(file.getFD()); + } finally { + file.close(); + } + } else { + throw new IOException("No valid output file"); + } + + _prepare(); + } + + /** + * Begins capturing and encoding data to the file specified with + * setOutputFile(). Call this after prepare(). + * + *

Since API level 13, if applications set a camera via + * {@link #setCamera(Camera)}, the apps can use the camera after this method + * call. The apps do not need to lock the camera again. However, if this + * method fails, the apps should still lock the camera back. The apps should + * not start another recording session during recording. + * + * @throws IllegalStateException if it is called before + * prepare() or when the camera is already in use by another app. + */ + public native void start() throws IllegalStateException; + + /** + * Stops recording. Call this after start(). Once recording is stopped, + * you will have to configure it again as if it has just been constructed. + * Note that a RuntimeException is intentionally thrown to the + * application, if no valid audio/video data has been received when stop() + * is called. This happens if stop() is called immediately after + * start(). The failure lets the application take action accordingly to + * clean up the output file (delete the output file, for instance), since + * the output file is not properly constructed when this happens. + * + * @throws IllegalStateException if it is called before start() + */ + public native void stop() throws IllegalStateException; + + /** + * Pauses recording. Call this after start(). You may resume recording + * with resume() without reconfiguration, as opposed to stop(). It does + * nothing if the recording is already paused. + * + * When the recording is paused and resumed, the resulting output would + * be as if nothing happend during paused period, immediately switching + * to the resumed scene. + * + * @throws IllegalStateException if it is called before start() or after + * stop() + */ + public native void pause() throws IllegalStateException; + + /** + * Resumes recording. Call this after start(). It does nothing if the + * recording is not paused. + * + * @throws IllegalStateException if it is called before start() or after + * stop() + * @see android.media.MediaRecorder#pause + */ + public native void resume() throws IllegalStateException; + + /** + * Restarts the MediaRecorder to its idle state. After calling + * this method, you will have to configure it again as if it had just been + * constructed. + */ + public void reset() { + native_reset(); + + // make sure none of the listeners get called anymore + mEventHandler.removeCallbacksAndMessages(null); + } + + private native void native_reset(); + + /** + * Returns the maximum absolute amplitude that was sampled since the last + * call to this method. Call this only after the setAudioSource(). + * + * @return the maximum absolute amplitude measured since the last call, or + * 0 when called for the first time + * @throws IllegalStateException if it is called before + * the audio source has been set. + */ + public native int getMaxAmplitude() throws IllegalStateException; + + /* Do not change this value without updating its counterpart + * in include/media/mediarecorder.h or mediaplayer.h! + */ + /** Unspecified media recorder error. + * @see android.media.MediaRecorder.OnErrorListener + */ + public static final int MEDIA_RECORDER_ERROR_UNKNOWN = 1; + /** Media server died. In this case, the application must release the + * MediaRecorder object and instantiate a new one. + * @see android.media.MediaRecorder.OnErrorListener + */ + public static final int MEDIA_ERROR_SERVER_DIED = 100; + + /** + * Interface definition for a callback to be invoked when an error + * occurs while recording. + */ + public interface OnErrorListener + { + /** + * Called when an error occurs while recording. + * + * @param mr the MediaRecorder that encountered the error + * @param what the type of error that has occurred: + *

+ * @param extra an extra code, specific to the error type + */ + void onError(MediaRecorder mr, int what, int extra); + } + + /** + * Register a callback to be invoked when an error occurs while + * recording. + * + * @param l the callback that will be run + */ + public void setOnErrorListener(OnErrorListener l) + { + mOnErrorListener = l; + } + + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + /** Unspecified media recorder info. + * @see android.media.MediaRecorder.OnInfoListener + */ + public static final int MEDIA_RECORDER_INFO_UNKNOWN = 1; + /** A maximum duration had been setup and has now been reached. + * @see android.media.MediaRecorder.OnInfoListener + */ + public static final int MEDIA_RECORDER_INFO_MAX_DURATION_REACHED = 800; + /** A maximum filesize had been setup and has now been reached. + * Note: This event will not be sent if application already set + * next output file through {@link #setNextOutputFile}. + * @see android.media.MediaRecorder.OnInfoListener + */ + public static final int MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED = 801; + /** A maximum filesize had been setup and current recorded file size + * has reached 90% of the limit. This is sent once per file upon + * reaching/passing the 90% limit. To continue the recording, applicaiton + * should use {@link #setNextOutputFile} to set the next output file. + * Otherwise, recording will stop when reaching maximum file size. + * @see android.media.MediaRecorder.OnInfoListener + */ + public static final int MEDIA_RECORDER_INFO_MAX_FILESIZE_APPROACHING = 802; + /** A maximum filesize had been reached and MediaRecorder has switched + * output to a new file set by application {@link #setNextOutputFile}. + * For best practice, application should use this event to keep track + * of whether the file previously set has been used or not. + * @see android.media.MediaRecorder.OnInfoListener + */ + public static final int MEDIA_RECORDER_INFO_NEXT_OUTPUT_FILE_STARTED = 803; + + /** informational events for individual tracks, for testing purpose. + * The track informational event usually contains two parts in the ext1 + * arg of the onInfo() callback: bit 31-28 contains the track id; and + * the rest of the 28 bits contains the informational event defined here. + * For example, ext1 = (1 << 28 | MEDIA_RECORDER_TRACK_INFO_TYPE) if the + * track id is 1 for informational event MEDIA_RECORDER_TRACK_INFO_TYPE; + * while ext1 = (0 << 28 | MEDIA_RECORDER_TRACK_INFO_TYPE) if the track + * id is 0 for informational event MEDIA_RECORDER_TRACK_INFO_TYPE. The + * application should extract the track id and the type of informational + * event from ext1, accordingly. + * + * FIXME: + * Please update the comment for onInfo also when these + * events are unhidden so that application knows how to extract the track + * id and the informational event type from onInfo callback. + * + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_LIST_START = 1000; + /** Signal the completion of the track for the recording session. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_COMPLETION_STATUS = 1000; + /** Indicate the recording progress in time (ms) during recording. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_PROGRESS_IN_TIME = 1001; + /** Indicate the track type: 0 for Audio and 1 for Video. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_TYPE = 1002; + /** Provide the track duration information. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_DURATION_MS = 1003; + /** Provide the max chunk duration in time (ms) for the given track. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_MAX_CHUNK_DUR_MS = 1004; + /** Provide the total number of recordd frames. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_ENCODED_FRAMES = 1005; + /** Provide the max spacing between neighboring chunks for the given track. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INTER_CHUNK_TIME_MS = 1006; + /** Provide the elapsed time measuring from the start of the recording + * till the first output frame of the given track is received, excluding + * any intentional start time offset of a recording session for the + * purpose of eliminating the recording sound in the recorded file. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_INITIAL_DELAY_MS = 1007; + /** Provide the start time difference (delay) betweeen this track and + * the start of the movie. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_START_OFFSET_MS = 1008; + /** Provide the total number of data (in kilo-bytes) encoded. + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_DATA_KBYTES = 1009; + /** + * {@hide} + */ + public static final int MEDIA_RECORDER_TRACK_INFO_LIST_END = 2000; + + + /** + * Interface definition of a callback to be invoked to communicate some + * info and/or warning about the recording. + */ + public interface OnInfoListener + { + /** + * Called to indicate an info or a warning during recording. + * + * @param mr the MediaRecorder the info pertains to + * @param what the type of info or warning that has occurred + * + * @param extra an extra code, specific to the info type + */ + void onInfo(MediaRecorder mr, int what, int extra); + } + + /** + * Register a callback to be invoked when an informational event occurs while + * recording. + * + * @param listener the callback that will be run + */ + public void setOnInfoListener(OnInfoListener listener) + { + mOnInfoListener = listener; + } + + private class EventHandler extends Handler + { + private MediaRecorder mMediaRecorder; + + public EventHandler(MediaRecorder mr, Looper looper) { + super(looper); + mMediaRecorder = mr; + } + + /* Do not change these values without updating their counterparts + * in include/media/mediarecorder.h! + */ + private static final int MEDIA_RECORDER_EVENT_LIST_START = 1; + private static final int MEDIA_RECORDER_EVENT_ERROR = 1; + private static final int MEDIA_RECORDER_EVENT_INFO = 2; + private static final int MEDIA_RECORDER_EVENT_LIST_END = 99; + + /* Events related to individual tracks */ + private static final int MEDIA_RECORDER_TRACK_EVENT_LIST_START = 100; + private static final int MEDIA_RECORDER_TRACK_EVENT_ERROR = 100; + private static final int MEDIA_RECORDER_TRACK_EVENT_INFO = 101; + private static final int MEDIA_RECORDER_TRACK_EVENT_LIST_END = 1000; + + + @Override + public void handleMessage(Message msg) { + if (mMediaRecorder.mNativeContext == 0) { + Log.w(TAG, "mediarecorder went away with unhandled events"); + return; + } + switch(msg.what) { + case MEDIA_RECORDER_EVENT_ERROR: + case MEDIA_RECORDER_TRACK_EVENT_ERROR: + if (mOnErrorListener != null) + mOnErrorListener.onError(mMediaRecorder, msg.arg1, msg.arg2); + + return; + + case MEDIA_RECORDER_EVENT_INFO: + case MEDIA_RECORDER_TRACK_EVENT_INFO: + if (mOnInfoListener != null) + mOnInfoListener.onInfo(mMediaRecorder, msg.arg1, msg.arg2); + + return; + + default: + Log.e(TAG, "Unknown message type " + msg.what); + return; + } + } + } + + /** + * Called from native code when an interesting event happens. This method + * just uses the EventHandler system to post the event back to the main app thread. + * We use a weak reference to the original MediaRecorder object so that the native + * code is safe from the object disappearing from underneath it. (This is + * the cookie passed to native_setup().) + */ + private static void postEventFromNative(Object mediarecorder_ref, + int what, int arg1, int arg2, Object obj) + { + MediaRecorder mr = (MediaRecorder)((WeakReference)mediarecorder_ref).get(); + if (mr == null) { + return; + } + + if (mr.mEventHandler != null) { + Message m = mr.mEventHandler.obtainMessage(what, arg1, arg2, obj); + mr.mEventHandler.sendMessage(m); + } + } + + /** + * Releases resources associated with this MediaRecorder object. + * It is good practice to call this method when you're done + * using the MediaRecorder. In particular, whenever an Activity + * of an application is paused (its onPause() method is called), + * or stopped (its onStop() method is called), this method should be + * invoked to release the MediaRecorder object, unless the application + * has a special need to keep the object around. In addition to + * unnecessary resources (such as memory and instances of codecs) + * being held, failure to call this method immediately if a + * MediaRecorder object is no longer needed may also lead to + * continuous battery consumption for mobile devices, and recording + * failure for other applications if no multiple instances of the + * same codec are supported on a device. Even if multiple instances + * of the same codec are supported, some performance degradation + * may be expected when unnecessary multiple instances are used + * at the same time. + */ + public native void release(); + + private static native final void native_init(); + + private native final void native_setup(Object mediarecorder_this, + String clientName, String opPackageName) throws IllegalStateException; + + private native final void native_finalize(); + + private native void setParameter(String nameValuePair); + + /** + * Return Metrics data about the current Mediarecorder instance. + * + * @return a {@link PersistableBundle} containing the set of attributes and values + * available for the media being generated by this instance of + * MediaRecorder. + * The attributes are descibed in {@link MetricsConstants}. + * + * Additional vendor-specific fields may also be present in + * the return value. + */ + public PersistableBundle getMetrics() { + PersistableBundle bundle = native_getMetrics(); + return bundle; + } + + private native PersistableBundle native_getMetrics(); + + @Override + protected void finalize() { native_finalize(); } + + public final static class MetricsConstants + { + private MetricsConstants() {} + + /** + * Key to extract the audio bitrate + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String AUDIO_BITRATE = "android.media.mediarecorder.audio-bitrate"; + + /** + * Key to extract the number of audio channels + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String AUDIO_CHANNELS = "android.media.mediarecorder.audio-channels"; + + /** + * Key to extract the audio samplerate + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String AUDIO_SAMPLERATE = "android.media.mediarecorder.audio-samplerate"; + + /** + * Key to extract the audio timescale + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String AUDIO_TIMESCALE = "android.media.mediarecorder.audio-timescale"; + + /** + * Key to extract the video capture frame rate + * from the {@link MediaRecorder#getMetrics} return. + * The value is a double. + */ + public static final String CAPTURE_FPS = "android.media.mediarecorder.capture-fps"; + + /** + * Key to extract the video capture framerate enable value + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String CAPTURE_FPS_ENABLE = "android.media.mediarecorder.capture-fpsenable"; + + /** + * Key to extract the intended playback frame rate + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String FRAMERATE = "android.media.mediarecorder.frame-rate"; + + /** + * Key to extract the height (in pixels) of the captured video + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String HEIGHT = "android.media.mediarecorder.height"; + + /** + * Key to extract the recorded movies time units + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + * A value of 1000 indicates that the movie's timing is in milliseconds. + */ + public static final String MOVIE_TIMESCALE = "android.media.mediarecorder.movie-timescale"; + + /** + * Key to extract the rotation (in degrees) to properly orient the video + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String ROTATION = "android.media.mediarecorder.rotation"; + + /** + * Key to extract the video bitrate from being used + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String VIDEO_BITRATE = "android.media.mediarecorder.video-bitrate"; + + /** + * Key to extract the value for how often video iframes are generated + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String VIDEO_IFRAME_INTERVAL = "android.media.mediarecorder.video-iframe-interval"; + + /** + * Key to extract the video encoding level + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String VIDEO_LEVEL = "android.media.mediarecorder.video-encoder-level"; + + /** + * Key to extract the video encoding profile + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String VIDEO_PROFILE = "android.media.mediarecorder.video-encoder-profile"; + + /** + * Key to extract the recorded video time units + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + * A value of 1000 indicates that the video's timing is in milliseconds. + */ + public static final String VIDEO_TIMESCALE = "android.media.mediarecorder.video-timescale"; + + /** + * Key to extract the width (in pixels) of the captured video + * from the {@link MediaRecorder#getMetrics} return. + * The value is an integer. + */ + public static final String WIDTH = "android.media.mediarecorder.width"; + + } +} + -- cgit v1.2.3