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60 lines
2.4 KiB
Java
60 lines
2.4 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.exoplayer;
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/**
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* Maintains codec event counts, for debugging purposes only.
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* <p>
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* Counters should be written from the playback thread only. Counters may be read from any thread.
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* To ensure that the counter values are correctly reflected between threads, users of this class
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* should invoke {@link #ensureUpdated()} prior to reading and after writing.
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*/
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public final class CodecCounters {
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public int codecInitCount;
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public int codecReleaseCount;
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public int outputFormatChangedCount;
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public int outputBuffersChangedCount;
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public int renderedOutputBufferCount;
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public int skippedOutputBufferCount;
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public int droppedOutputBufferCount;
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public int maxConsecutiveDroppedOutputBufferCount;
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/**
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* Should be invoked from the playback thread after the counters have been updated. Should also
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* be invoked from any other thread that wishes to read the counters, before reading. These calls
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* ensure that counter updates are made visible to the reading threads.
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*/
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public synchronized void ensureUpdated() {
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// Do nothing. The use of synchronized ensures a memory barrier should another thread also
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// call this method.
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}
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public String getDebugString() {
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ensureUpdated();
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StringBuilder builder = new StringBuilder();
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builder.append("cic:").append(codecInitCount);
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builder.append(" crc:").append(codecReleaseCount);
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builder.append(" ofc:").append(outputFormatChangedCount);
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builder.append(" obc:").append(outputBuffersChangedCount);
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builder.append(" ren:").append(renderedOutputBufferCount);
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builder.append(" sob:").append(skippedOutputBufferCount);
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builder.append(" dob:").append(droppedOutputBufferCount);
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builder.append(" mcdob:").append(maxConsecutiveDroppedOutputBufferCount);
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return builder.toString();
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}
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}
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