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/*
* Copyright (C) 2005-2013 Team XBMC
* http://xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
// FileShoutcast.cpp: implementation of the CShoutcastFile class.
//
//////////////////////////////////////////////////////////////////////
#include "threads/SystemClock.h"
#include "system.h"
#include "ShoutcastFile.h"
#include "guilib/GUIWindowManager.h"
#include "URL.h"
#include "utils/RegExp.h"
#include "utils/HTMLUtil.h"
#include "utils/CharsetConverter.h"
#include "utils/TimeUtils.h"
#include "ApplicationMessenger.h"
#include "utils/log.h"
#include "FileCache.h"
#include <climits>
using namespace XFILE;
using namespace MUSIC_INFO;
CShoutcastFile::CShoutcastFile() :
IFile(), CThread("ShoutcastFile")
{
m_discarded = 0;
m_currint = 0;
m_buffer = NULL;
m_cacheReader = NULL;
m_tagPos = 0;
}
CShoutcastFile::~CShoutcastFile()
{
StopThread();
Close();
}
int64_t CShoutcastFile::GetPosition()
{
return m_file.GetPosition()-m_discarded;
}
int64_t CShoutcastFile::GetLength()
{
return 0;
}
bool CShoutcastFile::Open(const CURL& url)
{
CURL url2(url);
url2.SetProtocolOptions(url2.GetProtocolOptions()+"&noshout=true&Icy-MetaData=1");
url2.SetProtocol("http");
bool result = m_file.Open(url2);
if (result)
{
m_tag.SetTitle(m_file.GetHttpHeader().GetValue("icy-name"));
if (m_tag.GetTitle().empty())
m_tag.SetTitle(m_file.GetHttpHeader().GetValue("ice-name")); // icecast
m_tag.SetGenre(m_file.GetHttpHeader().GetValue("icy-genre"));
if (m_tag.GetGenre().empty())
m_tag.SetGenre(m_file.GetHttpHeader().GetValue("ice-genre")); // icecast
m_tag.SetLoaded(true);
}
m_fileCharset = m_file.GetServerReportedCharset();
m_metaint = atoi(m_file.GetHttpHeader().GetValue("icy-metaint").c_str());
if (!m_metaint)
m_metaint = -1;
m_buffer = new char[16*255];
m_tagPos = 1;
m_tagChange.Set();
Create();
return result;
}
ssize_t CShoutcastFile::Read(void* lpBuf, size_t uiBufSize)
{
if (uiBufSize > SSIZE_MAX)
uiBufSize = SSIZE_MAX;
if (m_currint >= m_metaint && m_metaint > 0)
{
unsigned char header;
m_file.Read(&header,1);
ReadTruncated(m_buffer, header*16);
if (ExtractTagInfo(m_buffer)
// this is here to workaround issues caused by application posting callbacks to itself (3cf882d9)
// the callback will set an empty tag in the info manager item, while we think we have ours set
|| (m_file.GetPosition() < 10*m_metaint && !m_tagPos))
{
m_tagPos = m_file.GetPosition();
m_tagChange.Set();
}
m_discarded += header*16+1;
m_currint = 0;
}
ssize_t toRead;
if (m_metaint > 0)
toRead = std::min<size_t>(uiBufSize,m_metaint-m_currint);
else
toRead = std::min<size_t>(uiBufSize,16*255);
toRead = m_file.Read(lpBuf,toRead);
if (toRead > 0)
m_currint += toRead;
return toRead;
}
int64_t CShoutcastFile::Seek(int64_t iFilePosition, int iWhence)
{
return -1;
}
void CShoutcastFile::Close()
{
StopThread();
delete[] m_buffer;
m_buffer = NULL;
m_file.Close();
}
bool CShoutcastFile::ExtractTagInfo(const char* buf)
{
std::string strBuffer = buf;
if (!m_fileCharset.empty())
{
std::string converted;
g_charsetConverter.ToUtf8(m_fileCharset, strBuffer, converted);
strBuffer = converted;
}
else
g_charsetConverter.unknownToUTF8(strBuffer);
bool result=false;
std::wstring wBuffer, wConverted;
g_charsetConverter.utf8ToW(strBuffer, wBuffer, false);
HTML::CHTMLUtil::ConvertHTMLToW(wBuffer, wConverted);
g_charsetConverter.wToUTF8(wConverted, strBuffer);
CRegExp reTitle(true);
reTitle.RegComp("StreamTitle=\'(.*?)\';");
if (reTitle.RegFind(strBuffer.c_str()) != -1)
{
std::string newtitle(reTitle.GetMatch(1));
result = (m_tag.GetTitle() != newtitle);
m_tag.SetTitle(newtitle);
}
return result;
}
void CShoutcastFile::ReadTruncated(char* buf2, int size)
{
char* buf = buf2;
while (size > 0)
{
int read = m_file.Read(buf,size);
size -= read;
buf += read;
}
}
int CShoutcastFile::IoControl(EIoControl control, void* payload)
{
if (control == IOCTRL_SET_CACHE)
m_cacheReader = (CFileCache*)payload;
return IFile::IoControl(control, payload);
}
void CShoutcastFile::Process()
{
if (!m_cacheReader)
return;
while (!m_bStop)
{
if (m_tagChange.WaitMSec(500))
{
while (!m_bStop && m_cacheReader->GetPosition() < m_tagPos)
Sleep(20);
CApplicationMessenger::Get().SetCurrentSongTag(m_tag);
m_tagPos = 0;
}
}
}
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