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authorDirk Dougherty <ddougherty@google.com>2013-10-29 20:56:17 -0700
committerDirk Dougherty <ddougherty@google.com>2013-10-29 20:56:17 -0700
commit4b737b695e4e72b26c995400e58d566b0c92f545 (patch)
treefcbb54cef59145c8c5fac9b6c2073febe76881a2 /samples/browseable/BasicMediaDecoder/src/com.example.android.basicmediadecoder/MainActivity.java
parent7165109e6d189ce518f6d3f0d1e09289c1d056c9 (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.java189
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();
+ }
+ }
+}