You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.7 KiB
64 lines
1.7 KiB
/*
|
|
* Copyright (C) 2012 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.
|
|
*/
|
|
|
|
#define LOG_TAG "MonoPipeReader"
|
|
//#define LOG_NDEBUG 0
|
|
|
|
#include <cutils/compiler.h>
|
|
#include <utils/Log.h>
|
|
#include <media/nbaio/MonoPipeReader.h>
|
|
|
|
namespace android {
|
|
|
|
MonoPipeReader::MonoPipeReader(MonoPipe* pipe) :
|
|
NBAIO_Source(pipe->mFormat),
|
|
mPipe(pipe), mFifoReader(mPipe->mFifo, true /*throttlesWriter*/)
|
|
{
|
|
}
|
|
|
|
MonoPipeReader::~MonoPipeReader()
|
|
{
|
|
}
|
|
|
|
ssize_t MonoPipeReader::availableToRead()
|
|
{
|
|
if (CC_UNLIKELY(!mNegotiated)) {
|
|
return NEGOTIATE;
|
|
}
|
|
ssize_t ret = mFifoReader.available();
|
|
ALOG_ASSERT(ret <= mPipe->mMaxFrames);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t MonoPipeReader::read(void *buffer, size_t count)
|
|
{
|
|
// count == 0 is unlikely and not worth checking for explicitly; will be handled automatically
|
|
ssize_t actual = mFifoReader.read(buffer, count);
|
|
ALOG_ASSERT(actual <= count);
|
|
if (CC_UNLIKELY(actual <= 0)) {
|
|
return actual;
|
|
}
|
|
mFramesRead += (size_t) actual;
|
|
return actual;
|
|
}
|
|
|
|
void MonoPipeReader::onTimestamp(const ExtendedTimestamp ×tamp)
|
|
{
|
|
mPipe->mTimestampMutator.push(timestamp);
|
|
}
|
|
|
|
} // namespace android
|