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Diffstat (limited to 'src/com/android/tv/dvr/DvrPlayer.java')
| -rw-r--r-- | src/com/android/tv/dvr/DvrPlayer.java | 425 |
1 files changed, 0 insertions, 425 deletions
diff --git a/src/com/android/tv/dvr/DvrPlayer.java b/src/com/android/tv/dvr/DvrPlayer.java deleted file mode 100644 index 5656655c..00000000 --- a/src/com/android/tv/dvr/DvrPlayer.java +++ /dev/null @@ -1,425 +0,0 @@ -/* - * Copyright (C) 2016 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 com.android.tv.dvr; - -import android.media.PlaybackParams; -import android.media.tv.TvContentRating; -import android.media.tv.TvInputManager; -import android.media.tv.TvTrackInfo; -import android.media.tv.TvView; -import android.media.session.PlaybackState; -import android.util.Log; - -import java.util.List; -import java.util.concurrent.TimeUnit; - -public class DvrPlayer { - private static final String TAG = "DvrPlayer"; - private static final boolean DEBUG = false; - - /** - * The max rewinding speed supported by DVR player. - */ - public static final int MAX_REWIND_SPEED = 256; - /** - * The max fast-forwarding speed supported by DVR player. - */ - public static final int MAX_FAST_FORWARD_SPEED = 256; - - private static final long SEEK_POSITION_MARGIN_MS = TimeUnit.SECONDS.toMillis(2); - private static final long REWIND_POSITION_MARGIN_MS = 32; // Workaround value. b/29994826 - - private RecordedProgram mProgram; - private long mInitialSeekPositionMs; - private final TvView mTvView; - private DvrPlayerCallback mCallback; - private AspectRatioChangedListener mAspectRatioChangedListener; - private ContentBlockedListener mContentBlockedListener; - private float mAspectRatio = Float.NaN; - private int mPlaybackState = PlaybackState.STATE_NONE; - private long mTimeShiftCurrentPositionMs; - private boolean mPauseOnPrepared; - private final PlaybackParams mPlaybackParams = new PlaybackParams(); - private final DvrPlayerCallback mEmptyCallback = new DvrPlayerCallback(); - private long mStartPositionMs = TvInputManager.TIME_SHIFT_INVALID_TIME; - private boolean mTimeShiftPlayAvailable; - - public static class DvrPlayerCallback { - /** - * Called when the playback position is changed. The normal updating frequency is - * around 1 sec., which is restricted to the implementation of - * {@link android.media.tv.TvInputService}. - */ - public void onPlaybackPositionChanged(long positionMs) { } - /** - * Called when the playback state or the playback speed is changed. - */ - public void onPlaybackStateChanged(int playbackState, int playbackSpeed) { } - /** - * Called when the playback toward the end. - */ - public void onPlaybackEnded() { } - } - - public interface AspectRatioChangedListener { - /** - * Called when the Video's aspect ratio is changed. - */ - void onAspectRatioChanged(float videoAspectRatio); - } - - public interface ContentBlockedListener { - /** - * Called when the Video's aspect ratio is changed. - */ - void onContentBlocked(TvContentRating rating); - } - - public DvrPlayer(TvView tvView) { - mTvView = tvView; - mPlaybackParams.setSpeed(1.0f); - setTvViewCallbacks(); - setCallback(null); - } - - /** - * Prepares playback. - * - * @param doPlay indicates DVR player do or do not start playback after media is prepared. - */ - public void prepare(boolean doPlay) throws IllegalStateException { - if (DEBUG) Log.d(TAG, "prepare()"); - if (mProgram == null) { - throw new IllegalStateException("Recorded program not set"); - } else if (mPlaybackState != PlaybackState.STATE_NONE) { - throw new IllegalStateException("Playback is already prepared"); - } - mTvView.timeShiftPlay(mProgram.getInputId(), mProgram.getUri()); - mPlaybackState = PlaybackState.STATE_CONNECTING; - mPauseOnPrepared = !doPlay; - mCallback.onPlaybackStateChanged(mPlaybackState, 1); - } - - /** - * Resumes playback. - */ - public void play() throws IllegalStateException { - if (DEBUG) Log.d(TAG, "play()"); - if (!isPlaybackPrepared()) { - throw new IllegalStateException("Recorded program not set or video not ready yet"); - } - switch (mPlaybackState) { - case PlaybackState.STATE_FAST_FORWARDING: - case PlaybackState.STATE_REWINDING: - setPlaybackSpeed(1); - break; - default: - mTvView.timeShiftResume(); - } - mPlaybackState = PlaybackState.STATE_PLAYING; - mCallback.onPlaybackStateChanged(mPlaybackState, 1); - } - - /** - * Pauses playback. - */ - public void pause() throws IllegalStateException { - if (DEBUG) Log.d(TAG, "pause()"); - if (!isPlaybackPrepared()) { - throw new IllegalStateException("Recorded program not set or playback not started yet"); - } - switch (mPlaybackState) { - case PlaybackState.STATE_FAST_FORWARDING: - case PlaybackState.STATE_REWINDING: - setPlaybackSpeed(1); - // falls through - case PlaybackState.STATE_PLAYING: - mTvView.timeShiftPause(); - mPlaybackState = PlaybackState.STATE_PAUSED; - break; - default: - break; - } - mCallback.onPlaybackStateChanged(mPlaybackState, 1); - } - - /** - * Fast-forwards playback with the given speed. If the given speed is larger than - * {@value #MAX_FAST_FORWARD_SPEED}, uses {@value #MAX_FAST_FORWARD_SPEED}. - */ - public void fastForward(int speed) throws IllegalStateException { - if (DEBUG) Log.d(TAG, "fastForward()"); - if (!isPlaybackPrepared()) { - throw new IllegalStateException("Recorded program not set or playback not started yet"); - } - if (speed <= 0) { - throw new IllegalArgumentException("Speed cannot be negative or 0"); - } - if (mTimeShiftCurrentPositionMs >= mProgram.getDurationMillis() - SEEK_POSITION_MARGIN_MS) { - return; - } - speed = Math.min(speed, MAX_FAST_FORWARD_SPEED); - if (DEBUG) Log.d(TAG, "Let's play with speed: " + speed); - setPlaybackSpeed(speed); - mPlaybackState = PlaybackState.STATE_FAST_FORWARDING; - mCallback.onPlaybackStateChanged(mPlaybackState, speed); - } - - /** - * Rewinds playback with the given speed. If the given speed is larger than - * {@value #MAX_REWIND_SPEED}, uses {@value #MAX_REWIND_SPEED}. - */ - public void rewind(int speed) throws IllegalStateException { - if (DEBUG) Log.d(TAG, "rewind()"); - if (!isPlaybackPrepared()) { - throw new IllegalStateException("Recorded program not set or playback not started yet"); - } - if (speed <= 0) { - throw new IllegalArgumentException("Speed cannot be negative or 0"); - } - if (mTimeShiftCurrentPositionMs <= REWIND_POSITION_MARGIN_MS) { - return; - } - speed = Math.min(speed, MAX_REWIND_SPEED); - if (DEBUG) Log.d(TAG, "Let's play with speed: " + speed); - setPlaybackSpeed(-speed); - mPlaybackState = PlaybackState.STATE_REWINDING; - mCallback.onPlaybackStateChanged(mPlaybackState, speed); - } - - /** - * Seeks playback to the specified position. - */ - public void seekTo(long positionMs) throws IllegalStateException { - if (DEBUG) Log.d(TAG, "seekTo()"); - if (!isPlaybackPrepared()) { - throw new IllegalStateException("Recorded program not set or playback not started yet"); - } - if (mProgram == null || mPlaybackState == PlaybackState.STATE_NONE) { - return; - } - positionMs = getRealSeekPosition(positionMs, SEEK_POSITION_MARGIN_MS); - if (DEBUG) Log.d(TAG, "Now: " + getPlaybackPosition() + ", shift to: " + positionMs); - mTvView.timeShiftSeekTo(positionMs + mStartPositionMs); - if (mPlaybackState == PlaybackState.STATE_FAST_FORWARDING || - mPlaybackState == PlaybackState.STATE_REWINDING) { - mPlaybackState = PlaybackState.STATE_PLAYING; - mTvView.timeShiftResume(); - mCallback.onPlaybackStateChanged(mPlaybackState, 1); - } - } - - /** - * Resets playback. - */ - public void reset() { - if (DEBUG) Log.d(TAG, "reset()"); - mCallback.onPlaybackStateChanged(PlaybackState.STATE_NONE, 1); - mPlaybackState = PlaybackState.STATE_NONE; - mTvView.reset(); - mTimeShiftPlayAvailable = false; - mStartPositionMs = TvInputManager.TIME_SHIFT_INVALID_TIME; - mTimeShiftCurrentPositionMs = 0; - mPlaybackParams.setSpeed(1.0f); - mProgram = null; - } - - /** - * Sets callbacks for playback. - */ - public void setCallback(DvrPlayerCallback callback) { - if (callback != null) { - mCallback = callback; - } else { - mCallback = mEmptyCallback; - } - } - - /** - * Sets listener to aspect ratio changing. - */ - public void setAspectRatioChangedListener(AspectRatioChangedListener listener) { - mAspectRatioChangedListener = listener; - } - - /** - * Sets listener to content blocking. - */ - public void setContentBlockedListener(ContentBlockedListener listener) { - mContentBlockedListener = listener; - } - - /** - * Sets recorded programs for playback. If the player is playing another program, stops it. - */ - public void setProgram(RecordedProgram program, long initialSeekPositionMs) { - if (mProgram != null && mProgram.equals(program)) { - return; - } - if (mPlaybackState != PlaybackState.STATE_NONE) { - reset(); - } - mInitialSeekPositionMs = initialSeekPositionMs; - mProgram = program; - } - - /** - * Returns the recorded program now playing. - */ - public RecordedProgram getProgram() { - return mProgram; - } - - /** - * Returns the currrent playback posistion in msecs. - */ - public long getPlaybackPosition() { - return mTimeShiftCurrentPositionMs; - } - - /** - * Returns the playback speed currently used. - */ - public int getPlaybackSpeed() { - return (int) mPlaybackParams.getSpeed(); - } - - /** - * Returns the playback state defined in {@link android.media.session.PlaybackState}. - */ - public int getPlaybackState() { - return mPlaybackState; - } - - /** - * Returns if playback of the recorded program is started. - */ - public boolean isPlaybackPrepared() { - return mPlaybackState != PlaybackState.STATE_NONE - && mPlaybackState != PlaybackState.STATE_CONNECTING; - } - - private void setPlaybackSpeed(int speed) { - mPlaybackParams.setSpeed(speed); - mTvView.timeShiftSetPlaybackParams(mPlaybackParams); - } - - private long getRealSeekPosition(long seekPositionMs, long endMarginMs) { - return Math.max(0, Math.min(seekPositionMs, mProgram.getDurationMillis() - endMarginMs)); - } - - private void setTvViewCallbacks() { - mTvView.setTimeShiftPositionCallback(new TvView.TimeShiftPositionCallback() { - @Override - public void onTimeShiftStartPositionChanged(String inputId, long timeMs) { - if (DEBUG) Log.d(TAG, "onTimeShiftStartPositionChanged:" + timeMs); - mStartPositionMs = timeMs; - if (mTimeShiftPlayAvailable) { - resumeToWatchedPositionIfNeeded(); - } - } - - @Override - public void onTimeShiftCurrentPositionChanged(String inputId, long timeMs) { - if (DEBUG) Log.d(TAG, "onTimeShiftCurrentPositionChanged: " + timeMs); - if (!mTimeShiftPlayAvailable) { - // Workaround of b/31436263 - return; - } - // Workaround of b/32211561, TIF won't report start position when TIS report - // its start position as 0. In that case, we have to do the prework of playback - // on the first time we get current position, and the start position should be 0 - // at that time. - if (mStartPositionMs == TvInputManager.TIME_SHIFT_INVALID_TIME) { - mStartPositionMs = 0; - resumeToWatchedPositionIfNeeded(); - } - timeMs -= mStartPositionMs; - if (mPlaybackState == PlaybackState.STATE_REWINDING - && timeMs <= REWIND_POSITION_MARGIN_MS) { - play(); - } else { - mTimeShiftCurrentPositionMs = getRealSeekPosition(timeMs, 0); - mCallback.onPlaybackPositionChanged(mTimeShiftCurrentPositionMs); - if (timeMs >= mProgram.getDurationMillis()) { - pause(); - mCallback.onPlaybackEnded(); - } - } - } - }); - mTvView.setCallback(new TvView.TvInputCallback() { - @Override - public void onTimeShiftStatusChanged(String inputId, int status) { - if (DEBUG) Log.d(TAG, "onTimeShiftStatusChanged:" + status); - if (status == TvInputManager.TIME_SHIFT_STATUS_AVAILABLE - && mPlaybackState == PlaybackState.STATE_CONNECTING) { - mTimeShiftPlayAvailable = true; - } - } - - @Override - public void onTrackSelected(String inputId, int type, String trackId) { - if (trackId == null || type != TvTrackInfo.TYPE_VIDEO - || mAspectRatioChangedListener == null) { - return; - } - List<TvTrackInfo> trackInfos = mTvView.getTracks(TvTrackInfo.TYPE_VIDEO); - if (trackInfos != null) { - for (TvTrackInfo trackInfo : trackInfos) { - if (trackInfo.getId().equals(trackId)) { - float videoAspectRatio = trackInfo.getVideoPixelAspectRatio() - * trackInfo.getVideoWidth() / trackInfo.getVideoHeight(); - if (DEBUG) Log.d(TAG, "Aspect Ratio: " + videoAspectRatio); - if (!Float.isNaN(videoAspectRatio) - && mAspectRatio != videoAspectRatio) { - mAspectRatioChangedListener - .onAspectRatioChanged(videoAspectRatio); - mAspectRatio = videoAspectRatio; - return; - } - } - } - } - } - - @Override - public void onContentBlocked(String inputId, TvContentRating rating) { - if (mContentBlockedListener != null) { - mContentBlockedListener.onContentBlocked(rating); - } - } - }); - } - - private void resumeToWatchedPositionIfNeeded() { - if (mInitialSeekPositionMs != TvInputManager.TIME_SHIFT_INVALID_TIME) { - mTvView.timeShiftSeekTo(getRealSeekPosition(mInitialSeekPositionMs, - SEEK_POSITION_MARGIN_MS) + mStartPositionMs); - mInitialSeekPositionMs = TvInputManager.TIME_SHIFT_INVALID_TIME; - } - if (mPauseOnPrepared) { - mTvView.timeShiftPause(); - mPlaybackState = PlaybackState.STATE_PAUSED; - mPauseOnPrepared = false; - } else { - mTvView.timeShiftResume(); - mPlaybackState = PlaybackState.STATE_PLAYING; - } - mCallback.onPlaybackStateChanged(mPlaybackState, 1); - } -}
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