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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 "CDDAFile.h"
#include "ServiceBroker.h"
#include "URL.h"
#include "storage/MediaManager.h"
#include "utils/URIUtils.h"
#include "utils/log.h"
#include <algorithm>
#include <sys/stat.h>
using namespace MEDIA_DETECT;
using namespace XFILE;
CFileCDDA::CFileCDDA(void)
{
m_pCdIo = NULL;
m_cdio = CLibcdio::GetInstance();
m_iSectorCount = 52;
}
CFileCDDA::~CFileCDDA(void)
{
Close();
}
bool CFileCDDA::Open(const CURL& url)
{
std::string strURL = url.GetWithoutFilename();
if (!CServiceBroker::GetMediaManager().IsDiscInDrive(strURL) || !IsValidFile(url))
return false;
// Open the dvd drive
#ifdef TARGET_POSIX
m_pCdIo = m_cdio->cdio_open(CServiceBroker::GetMediaManager().TranslateDevicePath(strURL).c_str(),
DRIVER_UNKNOWN);
#elif defined(TARGET_WINDOWS)
m_pCdIo = m_cdio->cdio_open_win32(
CServiceBroker::GetMediaManager().TranslateDevicePath(strURL, true).c_str());
#endif
if (!m_pCdIo)
{
CLog::Log(LOGERROR, "file cdda: Opening the dvd drive failed");
return false;
}
int iTrack = GetTrackNum(url);
m_lsnStart = m_cdio->cdio_get_track_lsn(m_pCdIo, iTrack);
m_lsnEnd = m_cdio->cdio_get_track_last_lsn(m_pCdIo, iTrack);
m_lsnCurrent = m_lsnStart;
if (m_lsnStart == CDIO_INVALID_LSN || m_lsnEnd == CDIO_INVALID_LSN)
{
m_cdio->cdio_destroy(m_pCdIo);
m_pCdIo = NULL;
return false;
}
return true;
}
bool CFileCDDA::Exists(const CURL& url)
{
if (!IsValidFile(url))
return false;
int iTrack = GetTrackNum(url);
if (!Open(url))
return false;
int iLastTrack = m_cdio->cdio_get_last_track_num(m_pCdIo);
if (iLastTrack == CDIO_INVALID_TRACK)
return false;
return (iTrack > 0 && iTrack <= iLastTrack);
}
int CFileCDDA::Stat(const CURL& url, struct __stat64* buffer)
{
if (Open(url) && buffer)
{
*buffer = {};
buffer->st_size = GetLength();
buffer->st_mode = _S_IFREG;
Close();
return 0;
}
errno = ENOENT;
return -1;
}
ssize_t CFileCDDA::Read(void* lpBuf, size_t uiBufSize)
{
if (!m_pCdIo || !CServiceBroker::GetMediaManager().IsDiscInDrive())
return -1;
if (uiBufSize > SSIZE_MAX)
uiBufSize = SSIZE_MAX;
// limit number of sectors that fits in buffer by m_iSectorCount
int iSectorCount = std::min((int)uiBufSize / CDIO_CD_FRAMESIZE_RAW, m_iSectorCount);
if (iSectorCount <= 0)
return -1;
// Are there enough sectors left to read
if (m_lsnCurrent + iSectorCount > m_lsnEnd)
iSectorCount = m_lsnEnd - m_lsnCurrent;
// The loop tries to solve read error problem by lowering number of sectors to read (iSectorCount).
// When problem is solved the proper number of sectors is stored in m_iSectorCount
int big_iSectorCount = iSectorCount;
while (iSectorCount > 0)
{
int iret = m_cdio->cdio_read_audio_sectors(m_pCdIo, lpBuf, m_lsnCurrent, iSectorCount);
if (iret == DRIVER_OP_SUCCESS)
{
// If lower iSectorCount solved the problem limit it's value
if (iSectorCount < big_iSectorCount)
{
m_iSectorCount = iSectorCount;
}
break;
}
// iSectorCount is low so it cannot solve read problem
if (iSectorCount <= 10)
{
CLog::Log(LOGERROR,
"file cdda: Reading {} sectors of audio data starting at lsn {} failed with error "
"code {}",
iSectorCount, m_lsnCurrent, iret);
return -1;
}
iSectorCount = 10;
}
m_lsnCurrent += iSectorCount;
return iSectorCount*CDIO_CD_FRAMESIZE_RAW;
}
int64_t CFileCDDA::Seek(int64_t iFilePosition, int iWhence /*=SEEK_SET*/)
{
if (!m_pCdIo)
return -1;
lsn_t lsnPosition = (int)iFilePosition / CDIO_CD_FRAMESIZE_RAW;
switch (iWhence)
{
case SEEK_SET:
// cur = pos
m_lsnCurrent = m_lsnStart + lsnPosition;
break;
case SEEK_CUR:
// cur += pos
m_lsnCurrent += lsnPosition;
break;
case SEEK_END:
// end += pos
m_lsnCurrent = m_lsnEnd + lsnPosition;
break;
default:
return -1;
}
return ((int64_t)(m_lsnCurrent -m_lsnStart)*CDIO_CD_FRAMESIZE_RAW);
}
void CFileCDDA::Close()
{
if (m_pCdIo)
{
m_cdio->cdio_destroy(m_pCdIo);
m_pCdIo = NULL;
}
}
int64_t CFileCDDA::GetPosition()
{
if (!m_pCdIo)
return 0;
return ((int64_t)(m_lsnCurrent -m_lsnStart)*CDIO_CD_FRAMESIZE_RAW);
}
int64_t CFileCDDA::GetLength()
{
if (!m_pCdIo)
return 0;
return ((int64_t)(m_lsnEnd -m_lsnStart)*CDIO_CD_FRAMESIZE_RAW);
}
bool CFileCDDA::IsValidFile(const CURL& url)
{
// Only .cdda files are supported
return URIUtils::HasExtension(url.Get(), ".cdda");
}
int CFileCDDA::GetTrackNum(const CURL& url)
{
std::string strFileName = url.Get();
// get track number from "cdda://local/01.cdda"
return atoi(strFileName.substr(13, strFileName.size() - 13 - 5).c_str());
}
#define SECTOR_COUNT 52 // max. sectors that can be read at once
int CFileCDDA::GetChunkSize()
{
return SECTOR_COUNT*CDIO_CD_FRAMESIZE_RAW;
}
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