58 lines
1.1 KiB
C++
58 lines
1.1 KiB
C++
/*
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* Copyright (C) 2011 Google, Inc. All Rights Reserved
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*/
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#define LOG_TAG "WVMFileSource"
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#include <utils/Log.h>
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#include "WVMFileSource.h"
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#include "media/stagefright/MediaErrors.h"
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#include "media/stagefright/MediaDefs.h"
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#include "media/stagefright/MediaDebug.h"
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namespace android {
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WVMFileSource::WVMFileSource(sp<DataSource> &dataSource)
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: mDataSource(dataSource),
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mOffset(0), mLogOnce(true)
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{
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}
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unsigned long long WVMFileSource::GetSize()
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{
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off64_t size;
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mDataSource->getSize(&size);
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return size;
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}
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unsigned long long WVMFileSource::GetOffset()
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{
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return mOffset;
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}
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void WVMFileSource::Seek(unsigned long long offset)
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{
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mOffset = offset;
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}
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size_t WVMFileSource::Read(size_t amount, unsigned char *buffer)
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{
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ssize_t result = mDataSource->readAt(mOffset, buffer, amount);
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if (result < 0) {
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if (mLogOnce) {
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ALOGE("mDataSource-readAt returned error %d\n", (int)result );
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mLogOnce = false;
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}
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result = 0;
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} else {
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mOffset += result;
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mLogOnce = true;
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}
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return result;
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}
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} // namespace android
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