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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "Encoder.h"
#include "filesystem/File.h"
#include "utils/log.h"
#include <string.h>
#include <utility>
using namespace KODI::CDRIP;
CEncoder::CEncoder() = default;
CEncoder::~CEncoder()
{
FileClose();
}
bool CEncoder::EncoderInit(const std::string& strFile, int iInChannels, int iInRate, int iInBits)
{
m_dwWriteBufferPointer = 0;
m_strFile = strFile;
m_iInChannels = iInChannels;
m_iInSampleRate = iInRate;
m_iInBitsPerSample = iInBits;
if (!FileCreate(strFile))
{
CLog::Log(LOGERROR, "CEncoder::{} - Cannot open file: {}", __func__, strFile);
return false;
}
return Init();
}
ssize_t CEncoder::EncoderEncode(uint8_t* pbtStream, size_t nNumBytesRead)
{
const int iBytes = Encode(pbtStream, nNumBytesRead);
if (iBytes < 0)
{
CLog::Log(LOGERROR, "CEncoder::{} - Internal encoder error: {}", __func__, iBytes);
return 0;
}
return 1;
}
bool CEncoder::EncoderClose()
{
if (!Close())
return false;
FlushStream();
FileClose();
return true;
}
bool CEncoder::FileCreate(const std::string& filename)
{
m_file = std::make_unique<XFILE::CFile>();
if (m_file)
return m_file->OpenForWrite(filename, true);
return false;
}
bool CEncoder::FileClose()
{
if (m_file)
{
m_file->Close();
m_file.reset();
}
return true;
}
// return total bytes written, or -1 on error
ssize_t CEncoder::FileWrite(const uint8_t* pBuffer, size_t iBytes)
{
if (!m_file)
return -1;
const ssize_t dwBytesWritten = m_file->Write(pBuffer, iBytes);
if (dwBytesWritten <= 0)
return -1;
return dwBytesWritten;
}
ssize_t CEncoder::Seek(ssize_t iFilePosition, int iWhence)
{
if (!m_file)
return -1;
FlushStream();
return m_file->Seek(iFilePosition, iWhence);
}
// write the stream to our writebuffer, and write the buffer to disk if it's full
ssize_t CEncoder::Write(const uint8_t* pBuffer, size_t iBytes)
{
if ((WRITEBUFFER_SIZE - m_dwWriteBufferPointer) > iBytes)
{
// writebuffer is big enough to fit data
memcpy(m_btWriteBuffer + m_dwWriteBufferPointer, pBuffer, iBytes);
m_dwWriteBufferPointer += iBytes;
return iBytes;
}
else
{
// buffer is not big enough to fit data
if (m_dwWriteBufferPointer == 0)
{
// nothing in our buffer, just write the entire pBuffer to disk
return FileWrite(pBuffer, iBytes);
}
const size_t dwBytesRemaining = iBytes - (WRITEBUFFER_SIZE - m_dwWriteBufferPointer);
// fill up our write buffer and write it to disk
memcpy(m_btWriteBuffer + m_dwWriteBufferPointer, pBuffer,
(WRITEBUFFER_SIZE - m_dwWriteBufferPointer));
FileWrite(m_btWriteBuffer, WRITEBUFFER_SIZE);
m_dwWriteBufferPointer = 0;
// pbtRemaining = pBuffer + bytesWritten
const uint8_t* pbtRemaining = pBuffer + (iBytes - dwBytesRemaining);
if (dwBytesRemaining > WRITEBUFFER_SIZE)
{
// data is not going to fit in our buffer, just write it to disk
if (FileWrite(pbtRemaining, dwBytesRemaining) == -1)
return -1;
return iBytes;
}
else
{
// copy remaining bytes to our currently empty writebuffer
memcpy(m_btWriteBuffer, pbtRemaining, dwBytesRemaining);
m_dwWriteBufferPointer = dwBytesRemaining;
return iBytes;
}
}
}
// flush the contents of our writebuffer
ssize_t CEncoder::FlushStream()
{
if (m_dwWriteBufferPointer == 0)
return 0;
const ssize_t iResult = FileWrite(m_btWriteBuffer, m_dwWriteBufferPointer);
m_dwWriteBufferPointer = 0;
return iResult;
}
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