mirror of
https://github.com/samsonjs/media.git
synced 2026-03-30 10:15:48 +00:00
25a532656c
1. Use ints rather than longs. 2. Remove some counters that dont seem hugely useful. 3. Replace use of volatile with explicit method calls that cause a memory barrier. This is a lot more efficient than using volatile because it can be invoked only once per doSomeWork.
58 lines
2.3 KiB
Java
58 lines
2.3 KiB
Java
/*
|
|
* Copyright (C) 2014 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.google.android.exoplayer;
|
|
|
|
/**
|
|
* Maintains codec event counts, for debugging purposes only.
|
|
* <p>
|
|
* Counters should be written from the playback thread only. Counters may be read from any thread.
|
|
* To ensure that the counter values are correctly reflected between threads, users of this class
|
|
* should invoke {@link #ensureUpdated()} prior to reading and after writing.
|
|
*/
|
|
public final class CodecCounters {
|
|
|
|
public int codecInitCount;
|
|
public int codecReleaseCount;
|
|
public int outputFormatChangedCount;
|
|
public int outputBuffersChangedCount;
|
|
public int renderedOutputBufferCount;
|
|
public int skippedOutputBufferCount;
|
|
public int droppedOutputBufferCount;
|
|
|
|
/**
|
|
* Should be invoked from the playback thread after the counters have been updated. Should also
|
|
* be invoked from any other thread that wishes to read the counters, before reading. These calls
|
|
* ensure that counter updates are made visible to the reading threads.
|
|
*/
|
|
public synchronized void ensureUpdated() {
|
|
// Do nothing. The use of synchronized ensures a memory barrier should another thread also
|
|
// call this method.
|
|
}
|
|
|
|
public String getDebugString() {
|
|
ensureUpdated();
|
|
StringBuilder builder = new StringBuilder();
|
|
builder.append("cic(").append(codecInitCount).append(")");
|
|
builder.append("crc(").append(codecReleaseCount).append(")");
|
|
builder.append("ofc(").append(outputFormatChangedCount).append(")");
|
|
builder.append("obc(").append(outputBuffersChangedCount).append(")");
|
|
builder.append("ren(").append(renderedOutputBufferCount).append(")");
|
|
builder.append("sob(").append(skippedOutputBufferCount).append(")");
|
|
builder.append("dob(").append(droppedOutputBufferCount).append(")");
|
|
return builder.toString();
|
|
}
|
|
|
|
}
|