diff options
| author | Dirk Dougherty <ddougherty@google.com> | 2013-10-29 20:56:17 -0700 |
|---|---|---|
| committer | Dirk Dougherty <ddougherty@google.com> | 2013-10-29 20:56:17 -0700 |
| commit | 4b737b695e4e72b26c995400e58d566b0c92f545 (patch) | |
| tree | fcbb54cef59145c8c5fac9b6c2073febe76881a2 /samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java | |
| parent | 7165109e6d189ce518f6d3f0d1e09289c1d056c9 (diff) | |
Add prebuilt browseable samples as static files.
Change-Id: Ifb5382223343400882834d2dd9c182c3df602e34
Diffstat (limited to 'samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java')
| -rw-r--r-- | samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java b/samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java new file mode 100644 index 000000000..cac5bf218 --- /dev/null +++ b/samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java @@ -0,0 +1,189 @@ +/* + * Copyright (C) 2013 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.example.android.basicmediadecoder; + + +import android.animation.TimeAnimator; +import android.app.Activity; +import android.media.MediaCodec; +import android.media.MediaExtractor; +import android.net.Uri; +import android.os.Bundle; +import android.view.Menu; +import android.view.MenuInflater; +import android.view.MenuItem; +import android.view.Surface; +import android.view.TextureView; +import android.view.View; +import android.widget.TextView; + +import com.example.android.common.media.MediaCodecWrapper; + +import java.io.IOException; + +/** + * This activity uses a {@link android.view.TextureView} to render the frames of a video decoded using + * {@link android.media.MediaCodec} API. + */ +public class MainActivity extends Activity { + + private TextureView mPlaybackView; + private TimeAnimator mTimeAnimator = new TimeAnimator(); + + // A utility that wraps up the underlying input and output buffer processing operations + // into an east to use API. + private MediaCodecWrapper mCodecWrapper; + private MediaExtractor mExtractor = new MediaExtractor(); + TextView mAttribView = null; + + + /** + * Called when the activity is first created. + */ + @Override + public void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + setContentView(R.layout.sample_main); + mPlaybackView = (TextureView) findViewById(R.id.PlaybackView); + mAttribView = (TextView)findViewById(R.id.AttribView); + + } + + @Override + public boolean onCreateOptionsMenu(Menu menu) { + MenuInflater inflater = getMenuInflater(); + inflater.inflate(R.menu.action_menu, menu); + return true; + } + + @Override + protected void onPause() { + super.onPause(); + if(mTimeAnimator != null && mTimeAnimator.isRunning()) { + mTimeAnimator.end(); + } + + if (mCodecWrapper != null ) { + mCodecWrapper.stopAndRelease(); + mExtractor.release(); + } + } + + @Override + public boolean onOptionsItemSelected(MenuItem item) { + if (item.getItemId() == R.id.menu_play) { + mAttribView.setVisibility(View.VISIBLE); + startPlayback(); + item.setEnabled(false); + } + return true; + } + + + public void startPlayback() { + + // Construct a URI that points to the video resource that we want to play + Uri videoUri = Uri.parse("android.resource://" + + getPackageName() + "/" + + R.raw.vid_bigbuckbunny); + + try { + + // BEGIN_INCLUDE(initialize_extractor) + mExtractor.setDataSource(this, videoUri, null); + int nTracks = mExtractor.getTrackCount(); + + // Begin by unselecting all of the tracks in the extractor, so we won't see + // any tracks that we haven't explicitly selected. + for (int i = 0; i < nTracks; ++i) { + mExtractor.unselectTrack(i); + } + + + // Find the first video track in the stream. In a real-world application + // it's possible that the stream would contain multiple tracks, but this + // sample assumes that we just want to play the first one. + for (int i = 0; i < nTracks; ++i) { + // Try to create a video codec for this track. This call will return null if the + // track is not a video track, or not a recognized video format. Once it returns + // a valid MediaCodecWrapper, we can break out of the loop. + mCodecWrapper = MediaCodecWrapper.fromVideoFormat(mExtractor.getTrackFormat(i), + new Surface(mPlaybackView.getSurfaceTexture())); + if (mCodecWrapper != null) { + mExtractor.selectTrack(i); + break; + } + } + // END_INCLUDE(initialize_extractor) + + + + + // By using a {@link TimeAnimator}, we can sync our media rendering commands with + // the system display frame rendering. The animator ticks as the {@link Choreographer} + // recieves VSYNC events. + mTimeAnimator.setTimeListener(new TimeAnimator.TimeListener() { + @Override + public void onTimeUpdate(final TimeAnimator animation, + final long totalTime, + final long deltaTime) { + + boolean isEos = ((mExtractor.getSampleFlags() & MediaCodec + .BUFFER_FLAG_END_OF_STREAM) == MediaCodec.BUFFER_FLAG_END_OF_STREAM); + + // BEGIN_INCLUDE(write_sample) + if (!isEos) { + // Try to submit the sample to the codec and if successful advance the + // extractor to the next available sample to read. + boolean result = mCodecWrapper.writeSample(mExtractor, false, + mExtractor.getSampleTime(), mExtractor.getSampleFlags()); + + if (result) { + // Advancing the extractor is a blocking operation and it MUST be + // executed outside the main thread in real applications. + mExtractor.advance(); + } + } + // END_INCLUDE(write_sample) + + // Examine the sample at the head of the queue to see if its ready to be + // rendered and is not zero sized End-of-Stream record. + MediaCodec.BufferInfo out_bufferInfo = new MediaCodec.BufferInfo(); + mCodecWrapper.peekSample(out_bufferInfo); + + // BEGIN_INCLUDE(render_sample) + if (out_bufferInfo.size <= 0 && isEos) { + mTimeAnimator.end(); + mCodecWrapper.stopAndRelease(); + mExtractor.release(); + } else if (out_bufferInfo.presentationTimeUs / 1000 < totalTime) { + // Pop the sample off the queue and send it to {@link Surface} + mCodecWrapper.popSample(true); + } + // END_INCLUDE(render_sample) + + } + }); + + // We're all set. Kick off the animator to process buffers and render video frames as + // they become available + mTimeAnimator.start(); + } catch (IOException e) { + e.printStackTrace(); + } + } +} |
