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Commit 4f6bf174 authored by Nipun Kwatra's avatar Nipun Kwatra
Browse files

Enabling time lapse in setProfile, added setCaptureRate 

- Time lapse is automatically enabled in setProfile() if a time lapse
  profile is selected. Also audio setup is skipped for time lapse.
- Added setCaptureRate() to set the frame capture rate, which may be
  different from the video playback rate.
- Getting rid of enableTimeLapse() since setProfile() and
  setFrameCaptureDelay() do its job now.

Change-Id: Ifd9f89cea0d05ffbefc22eac4ea5d34147cc1fbe
parent 9b3f1140

media/java/android/media/MediaRecorder.java

+24 −10
Original line number Diff line number Diff line
@@ -277,12 +277,18 @@ public class MediaRecorder 
        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_1080P) {

            // Enable time lapse. Also don't set audio for time lapse.

            setParameter(String.format("time-lapse-enable=1"));

        } else {

            setAudioEncodingBitRate(profile.audioBitRate);

            setAudioChannels(profile.audioChannels);

            setAudioSamplingRate(profile.audioSampleRate);

        setVideoEncoder(profile.videoCodec);

            setAudioEncoder(profile.audioCodec);

        }

    }



    /**

     * Enables/Disables time lapse capture and sets its parameters. This method should
@@ -305,16 +311,24 @@ public class MediaRecorder 
    }



    /**

     * Enables time lapse capture and sets its parameters. This method should

     * be called after setProfile().

     * Set video frame capture rate. This can be used to set a different video frame capture

     * rate than the recorded video's playback rate. Currently this works only for time lapse mode.

     *

     * @param timeBetweenTimeLapseFrameCaptureMs time between two captures of time lapse frames.

     * @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.

     * @hide

     */

    public void enableTimeLapse(int timeBetweenTimeLapseFrameCaptureMs) {

        setParameter(String.format("time-lapse-enable=1"));

    public void setCaptureRate(double fps) {

        double timeBetweenFrameCapture = 1 / fps;

        int timeBetweenFrameCaptureMs = (int) (1000 * timeBetweenFrameCapture);

        setParameter(String.format("time-between-time-lapse-frame-capture=%d",

                    timeBetweenTimeLapseFrameCaptureMs));

                    timeBetweenFrameCaptureMs));

    }



    /**