Initial Video Editor API (fdacc8be) · Commits · e / os / android_frameworks_base

media/java/android/media/videoeditor/AudioTrack.java

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		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.videoeditor;

		import java.io.IOException;

		/**
		* This class allows to handle an audio track. This audio file is mixed with the
		* audio samples of the MediaItems.
		* {@hide}
		*/
		public class AudioTrack {
		// Instance variables
		private final String mUniqueId;
		private final String mFilename;
		private final long mDurationMs;
		private long mStartTimeMs;
		private long mTimelineDurationMs;
		private int mVolumePercent;
		private long mBeginBoundaryTimeMs;
		private long mEndBoundaryTimeMs;
		private boolean mLoop;

		// Ducking variables
		private int mDuckingThreshold;
		private int mDuckingLowVolume;
		private boolean mIsDuckingEnabled;

		// The audio waveform filename
		private String mAudioWaveformFilename;

		/**
		* An object of this type cannot be instantiated by using the default
		* constructor
		*/
		@SuppressWarnings("unused")
		private AudioTrack() throws IOException {
		this(null, null);
		}

		/**
		* Constructor
		*
		* @param audioTrackId The AudioTrack id
		* @param filename The absolute file name
		*
		* @throws IOException if file is not found
		* @throws IllegalArgumentException if file format is not supported or if
		* the codec is not supported
		*/
		public AudioTrack(String audioTrackId, String filename) throws IOException {
		mUniqueId = audioTrackId;
		mFilename = filename;
		mStartTimeMs = 0;
		// TODO: This value represents to the duration of the audio file
		mDurationMs = 300000;
		mTimelineDurationMs = mDurationMs;
		mVolumePercent = 100;

		// Play the entire audio track
		mBeginBoundaryTimeMs = 0;
		mEndBoundaryTimeMs = mDurationMs;

		// By default loop is disabled
		mLoop = false;

		// Ducking is enabled by default
		mDuckingThreshold = 0;
		mDuckingLowVolume = 0;
		mIsDuckingEnabled = true;

		// The audio waveform file is generated later
		mAudioWaveformFilename = null;
		}

		/**
		* @return The id of the media item
		*/
		public String getId() {
		return mUniqueId;
		}

		/**
		* Get the filename source for this audio track.
		*
		* @return The filename as an absolute file name
		*/
		public String getFilename() {
		return mFilename;
		}

		/**
		* Set the volume of this audio track as percentage of the volume in the
		* original audio source file.
		*
		* @param volumePercent Percentage of the volume to apply. If it is set to
		* 0, then volume becomes mute. It it is set to 100, then volume
		* is same as original volume. It it is set to 200, then volume
		* is doubled (provided that volume amplification is supported)
		*
		* @throws UnsupportedOperationException if volume amplification is requested
		* and is not supported.
		*/
		public void setVolume(int volumePercent) {
		mVolumePercent = volumePercent;
		}

		/**
		* Get the volume of the audio track as percentage of the volume in the
		* original audio source file.
		*
		* @return The volume in percentage
		*/
		public int getVolume() {
		return mVolumePercent;
		}

		/**
		* Set the start time of this audio track relative to the storyboard
		* timeline. Default value is 0.
		*
		* @param startTimeMs the start time in milliseconds
		*/
		public void setStartTime(long startTimeMs) {
		mStartTimeMs = startTimeMs;
		}

		/**
		* Get the start time of this audio track relative to the storyboard
		* timeline.
		*
		* @return The start time in milliseconds
		*/
		public long getStartTime() {
		return mStartTimeMs;
		}

		/**
		* @return The duration in milliseconds. This value represents the audio
		* track duration (not looped)
		*/
		public long getDuration() {
		return mDurationMs;
		}

		/**
		* @return The timeline duration. If looping is enabled this value
		* represents the duration of the looped audio track, otherwise it
		* is the duration of the audio track (mDurationMs).
		*/
		public long getTimelineDuration() {
		return mTimelineDurationMs;
		}

		/**
		* Sets the start and end marks for trimming an audio track
		*
		* @param beginMs start time in the audio track in milliseconds (relative to
		* the beginning of the audio track)
		* @param endMs end time in the audio track in milliseconds (relative to the
		* beginning of the audio track)
		*/
		public void setExtractBoundaries(long beginMs, long endMs) {
		if (beginMs > mDurationMs) {
		throw new IllegalArgumentException("Invalid start time");
		}
		if (endMs > mDurationMs) {
		throw new IllegalArgumentException("Invalid end time");
		}

		mBeginBoundaryTimeMs = beginMs;
		mEndBoundaryTimeMs = endMs;
		if (mLoop) {
		// TODO: Compute mDurationMs (from the beginning of the loop until
		// the end of all the loops.
		mTimelineDurationMs = mEndBoundaryTimeMs - mBeginBoundaryTimeMs;
		} else {
		mTimelineDurationMs = mEndBoundaryTimeMs - mBeginBoundaryTimeMs;
		}
		}

		/**
		* @return The boundary begin time
		*/
		public long getBoundaryBeginTime() {
		return mBeginBoundaryTimeMs;
		}

		/**
		* @return The boundary end time
		*/
		public long getBoundaryEndTime() {
		return mEndBoundaryTimeMs;
		}

		/**
		* Enable the loop mode for this audio track. Note that only one of the
		* audio tracks in the timeline can have the loop mode enabled. When
		* looping is enabled the samples between mBeginBoundaryTimeMs and
		* mEndBoundaryTimeMs are looped.
		*/
		public void enableLoop() {
		mLoop = true;
		}

		/**
		* Disable the loop mode
		*/
		public void disableLoop() {
		mLoop = false;
		}

		/**
		* @return true if looping is enabled
		*/
		public boolean isLooping() {
		return mLoop;
		}

		/**
		* Disable the audio duck effect
		*/
		public void disableDucking() {
		mIsDuckingEnabled = false;
		}

		/**
		* TODO DEFINE
		*
		* @param threshold
		* @param lowVolume
		* @param volume
		*/
		public void enableDucking(int threshold, int lowVolume, int volume) {
		mDuckingThreshold = threshold;
		mDuckingLowVolume = lowVolume;
		mIsDuckingEnabled = true;
		}

		/**
		* @return true if ducking is enabled
		*/
		public boolean isDuckingEnabled() {
		return mIsDuckingEnabled;
		}

		/**
		* @return The ducking threshold
		*/
		public int getDuckingThreshhold() {
		return mDuckingThreshold;
		}

		/**
		* @return The ducking low level
		*/
		public int getDuckingLowVolume() {
		return mDuckingLowVolume;
		}

		/**
		* This API allows to generate a file containing the sample volume levels of
		* this audio track object. This function may take significant time and is
		* blocking. The filename can be retrieved using getAudioWaveformFilename().
		*
		* @param listener The progress listener
		*
		* @throws IOException if the output file cannot be created
		* @throws IllegalArgumentException if the audio file does not have a valid
		* audio track
		*/
		public void extractAudioWaveform(ExtractAudioWaveformProgressListener listener)
		throws IOException {
		// TODO: Set mAudioWaveformFilename at the end once the extract is complete
		}

		/**
		* Get the audio waveform file name if extractAudioWaveform was successful.
		* The file format is as following:
		* <ul>
		* <li>first 4 bytes provide the number of samples for each value, as
		* big-endian signed</li>
		* <li>4 following bytes is the total number of values in the file, as
		* big-endian signed</li>
		* <li>then, all values follow as bytes</li>
		* </ul>
		*
		* @return the name of the file, null if the file does not exist
		*/
		public String getAudioWaveformFilename() {
		return mAudioWaveformFilename;
		}

		/*
		* {@inheritDoc}
		*/
		@Override
		public boolean equals(Object object) {
		if (!(object instanceof AudioTrack)) {
		return false;
		}
		return mUniqueId.equals(((AudioTrack)object).mUniqueId);
		}

		/*
		* {@inheritDoc}
		*/
		@Override
		public int hashCode() {
		return mUniqueId.hashCode();
		}
		}

media/java/android/media/videoeditor/Effect.java

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		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.videoeditor;

		/**
		* This is the super class for all effects. An effect can only be applied to a
		* single media item. If one wants to apply the same effect to multiple media
		* items, multiple @{MediaItem.addEffect(Effect)} call must be invoked on each
		* of the MediaItem objects.
		* {@hide}
		*/
		public abstract class Effect {
		// Instance variables
		private final String mUniqueId;
		protected long mDurationMs;
		// The start time of the effect relative to the media item timeline
		protected long mStartTimeMs;

		/**
		* Default constructor
		*/
		@SuppressWarnings("unused")
		private Effect() {
		mUniqueId = null;
		mStartTimeMs = 0;
		mDurationMs = 0;
		}

		/**
		* Constructor
		*
		* @param effectId The effect id
		* @param startTimeMs The start time relative to the media item to which it
		* is applied
		* @param durationMs The effect duration in milliseconds
		*/
		public Effect(String effectId, long startTimeMs, long durationMs) {
		mUniqueId = effectId;
		mStartTimeMs = startTimeMs;
		mDurationMs = durationMs;
		}

		/**
		* @return The id of the effect
		*/
		public String getId() {
		return mUniqueId;
		}

		/**
		* Set the duration of the effect. If a preview or export is in progress,
		* then this change is effective for next preview or export session. s
		*
		* @param durationMs of the effect in milliseconds
		*/
		public void setDuration(long durationMs) {
		mDurationMs = durationMs;
		}

		/**
		* Get the duration of the effect
		*
		* @return The duration of the effect in milliseconds
		*/
		public long getDuration() {
		return mDurationMs;
		}

		/**
		* Set start time of the effect. If a preview or export is in progress, then
		* this change is effective for next preview or export session.
		*
		* @param startTimeMs The start time of the effect relative to the begining
		* of the media item in milliseconds
		*/
		public void setStartTime(long startTimeMs) {
		mStartTimeMs = startTimeMs;
		}

		/**
		* @return The start time in milliseconds
		*/
		public long getStartTime() {
		return mStartTimeMs;
		}

		/*
		* {@inheritDoc}
		*/
		@Override
		public boolean equals(Object object) {
		if (!(object instanceof Effect)) {
		return false;
		}
		return mUniqueId.equals(((Effect)object).mUniqueId);
		}

		/*
		* {@inheritDoc}
		*/
		@Override
		public int hashCode() {
		return mUniqueId.hashCode();
		}
		}

media/java/android/media/videoeditor/EffectColor.java

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		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.videoeditor;

		/**
		* This class allows to apply color on a media item.
		* {@hide}
		*/
		public class EffectColor extends Effect {

		/**
		* Change the video frame color to the RGB color value provided
		*/
		public static final int TYPE_COLOR = 1; // color as 888 RGB
		/**
		* Change the video frame color to a gradation from RGB color (at the top of
		* the frame) to black (at the bottom of the frame).
		*/
		public static final int TYPE_GRADIENT = 2;
		/**
		* Change the video frame color to sepia
		*/
		public static final int TYPE_SEPIA = 3;
		/**
		* Invert the video frame color
		*/
		public static final int TYPE_NEGATIVE = 4;
		/**
		* Make the video look like as if it was recorded in 50's
		*/
		public static final int TYPE_FIFTIES = 5;

		// Colors for the color effect
		public static final int GREEN = 0x0000ff00;
		public static final int PINK = 0x00ff66cc;
		public static final int GRAY = 0x007f7f7f;

		// The effect type
		private final int mType;

		// The effect parameter
		private final int mParam;

		/**
		* An object of this type cannot be instantiated by using the default
		* constructor
		*/
		@SuppressWarnings("unused")
		private EffectColor() {
		this(null, 0, 0, 0, 0);
		}

		/**
		* Constructor
		*
		* @param effectId The effect id
		* @param startTimeMs The start time relative to the media item to which it
		* is applied
		* @param durationMs The duration of this effect in milliseconds
		* @param type type of the effect. type is one of: TYPE_COLOR,
		* TYPE_GRADIENT, TYPE_SEPIA, TYPE_NEGATIVE, TYPE_FIFTIES. If
		* type is not supported, the argument is ignored
		* @param param if type is TYPE_COLOR, param is the RGB color as 888.
		* Otherwise, param is ignored
		*/
		public EffectColor(String effectId, long startTimeMs, long durationMs,
		int type, int param) {
		super(effectId, startTimeMs, durationMs);
		mType = type;
		mParam = param;
		}

		/**
		* @return The type of this effect
		*/
		public int getType() {
		return mType;
		}

		/**
		* @return the color as RGB 888 if type is TYPE_COLOR. Otherwise, ignore.
		*/
		public int getParam() {
		return mParam;
		}
		}

media/java/android/media/videoeditor/EffectKenBurns.java

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		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.videoeditor;

		import java.io.IOException;

		import android.graphics.Rect;

		/**
		* This class represents a Ken Burns effect.
		* {@hide}
		*/
		public class EffectKenBurns extends Effect {
		// Instance variables
		private Rect mStartRect;
		private Rect mEndRect;

		/**
		* Objects of this type cannot be instantiated by using the default
		* constructor
		*/
		@SuppressWarnings("unused")
		private EffectKenBurns() throws IOException {
		this(null, null, null, 0, 0);
		}

		/**
		* Constructor
		*
		* @param effectId The effect id
		* @param startRect The start rectangle
		* @param endRect The end rectangle
		* @param startTimeMs The start time
		* @param durationMs The duration of the Ken Burns effect in milliseconds
		*/
		public EffectKenBurns(String effectId, Rect startRect, Rect endRect, long startTime,
		long durationMs)
		throws IOException {
		super(effectId, startTime, durationMs);

		mStartRect = startRect;
		mEndRect = endRect;
		}

		/**
		* @param startRect The start rectangle
		*
		* @throws IllegalArgumentException if start rectangle is incorrectly set.
		*/
		public void setStartRect(Rect startRect) {
		mStartRect = startRect;
		}

		/**
		* @return The start rectangle
		*/
		public Rect getStartRect() {
		return mStartRect;
		}

		/**
		* @param endRect The end rectangle
		*
		* @throws IllegalArgumentException if end rectangle is incorrectly set.
		*/
		public void setEndRect(Rect endRect) {
		mEndRect = endRect;
		}

		/**
		* @return The end rectangle
		*/
		public Rect getEndRect() {
		return mEndRect;
		}
		}

media/java/android/media/videoeditor/ExtractAudioWaveformProgressListener.java

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		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.videoeditor;

		/**
		* This listener interface is used by
		* {@link MediaVideoItem#extractAudioWaveform(ExtractAudioWaveformProgressListener listener)}
		* or
		* {@link AudioTrack#extractAudioWaveform(ExtractAudioWaveformProgressListener listener)}
		* {@hide}
		*/
		public interface ExtractAudioWaveformProgressListener {
		/**
		* This method notifies the listener of the progress status of
		* an extractAudioWaveform operation.
		* This method may be called maximum 100 times for one operation.
		*
		* @param progress The progress in %. At the beginning of the operation,
		* this value is set to 0; at the end, the value is set to 100.
		*/
		public void onProgress(int progress);
		}