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