virtual HRESULT STDMETHODCALLTYPE Seek(
LARGE_INTEGER dlibMove,
DWORD dwOrigin,
ULARGE_INTEGER *plibNewPosition)
{
if (dwOrigin == STREAM_SEEK_CUR)
{
if (dlibMove.QuadPart + (LONGLONG)m_position < 0
|| dlibMove.QuadPart + (LONGLONG)m_position > MAXDWORD)
return STG_E_INVALIDFUNCTION;
m_position += (t_size)dlibMove.QuadPart; //Cast should be OK by if condition
}
else if (dwOrigin == STREAM_SEEK_END)
{
if (dlibMove.QuadPart + (LONGLONG)m_data.get_size() < 0)
return STG_E_INVALIDFUNCTION;
m_position = m_data.get_size() - (t_size)dlibMove.QuadPart; //Cast should be OK by if condition
}
else if (dwOrigin == STREAM_SEEK_SET)
{
if ((ULONGLONG)dlibMove.QuadPart > MAXDWORD)
return STG_E_INVALIDFUNCTION;
m_position = (t_size)dlibMove.QuadPart; //Cast should be OK by if condition
}
else
return STG_E_INVALIDFUNCTION;
if (plibNewPosition)
plibNewPosition->QuadPart = m_position;
return S_OK;
}
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Read(
/* [length_is][size_is][out] */ void *pv,
/* [in] */ ULONG cb,
/* [out] */ ULONG *pcbRead)
{
if (m_position > m_data.get_size())
return STG_E_INVALIDFUNCTION;
t_size read = min (cb, m_data.get_size() - m_position);
memcpy(pv, &m_data.get_ptr()[m_position], read);
m_position += read;
if (pcbRead)
*pcbRead = read;
return S_OK;
}
static void fileSanitySeek(file::ptr f, pfc::array_t<uint8_t> const & content, size_t offset, abort_callback & aborter) {
const size_t readAmount = 64 * 1024;
pfc::array_staticsize_t<uint8_t> buf; buf.set_size_discard(readAmount);
f->seek(offset, aborter);
t_filesize positionGot = f->get_position(aborter);
if (positionGot != offset) {
FB2K_console_formatter() << "File sanity: at " << offset << " reported position became " << positionGot;
throw std::runtime_error("Seek test failure");
}
size_t did = f->read(buf.get_ptr(), readAmount, aborter);
size_t expected = pfc::min_t<size_t>(readAmount, content.get_size() - offset);
if (expected != did) {
FB2K_console_formatter() << "File sanity: at " << offset << " bytes, expected read size of " << expected << ", got " << did;
if (did > expected) FB2K_console_formatter() << "Read past EOF";
else FB2K_console_formatter() << "Premature EOF";
throw std::runtime_error("Seek test failure");
}
if (memcmp(buf.get_ptr(), content.get_ptr() + offset, did) != 0) {
FB2K_console_formatter() << "File sanity: data mismatch at " << offset << " - " << (offset + did) << " bytes";
throw std::runtime_error("Seek test failure");
}
positionGot = f->get_position(aborter);
if (positionGot != offset + did) {
FB2K_console_formatter() << "File sanity: at " << offset << "+" << did << "=" << (offset + did) << " reported position became " << positionGot;
throw std::runtime_error("Seek test failure");
}
}
virtual HRESULT STDMETHODCALLTYPE CopyTo(
/* [unique][in] */ IStream *pstm,
/* [in] */ ULARGE_INTEGER cb,
/* [out] */ ULARGE_INTEGER *pcbRead,
/* [out] */ ULARGE_INTEGER *pcbWritten)
{
if (cb.QuadPart > m_data.get_size() - m_position)
return STG_E_INVALIDFUNCTION;
t_size read = min ((t_size)cb.QuadPart, m_data.get_size() - m_position);
ULONG pwritten = NULL;
pstm->Write(&m_data.get_ptr()[m_position], read, &pwritten);
m_position += read;
if (pcbRead)
pcbRead->QuadPart = read;
if (pcbWritten)
pcbWritten->QuadPart = pwritten;
return S_OK;
}
void get_info( file_info & p_info, abort_callback & p_abort )
{
ModPlugFile* m_info = ModPlug_Load(file_buffer.get_ptr(), file_buffer.get_size());
p_info.info_set( "encoding", "synthesized" );
int type_module = ModPlug_GetModuleType(m_info);
p_info.info_set( "codec", "Module file" );
p_info.info_set_int( "channels", 2 );
p_info.meta_set( "title", pfc::stringcvt::string_utf8_from_ansi( ModPlug_GetName(m_info) ));
int len = ModPlug_GetLength(m_info);
len /= 1000;
p_info.set_length( len );
if(m_info)ModPlug_Unload(m_info);
}
virtual HRESULT STDMETHODCALLTYPE Stat(
/* [out] */ __RPC__out STATSTG *pstatstg,
/* [in] */ DWORD grfStatFlag)
{
memset(pstatstg, 0, sizeof(STATSTG));
pstatstg->cbSize.QuadPart = m_data.get_size();
pstatstg->type = STGTY_STREAM;
pstatstg->pwcsName = NULL;
/*if (!(grfStatFlag & STATFLAG_NONAME))
{
if (pstatstg->pwcsName = (LPOLESTR)CoTaskMemAlloc(1*2))
wcscpy_s(pstatstg->pwcsName, 5, L"AB.jpg");
}*/
return S_OK;
}
void get_info( file_info & p_info, abort_callback & p_abort )
{
YMMUSIC * m_info = ymMusicCreate();
ymMusicLoadMemory(m_info,file_buffer.get_ptr(), file_buffer.get_size());
ymMusicInfo_t info;
ymMusicGetInfo(m_info,&info);
p_info.info_set( "encoding", "synthesized" );
p_info.info_set( "codec", "YM" );
p_info.info_set_int( "channels", 1 );
p_info.meta_set( "title", pfc::stringcvt::string_utf8_from_ansi( info.pSongName) );
p_info.meta_set( "artist", pfc::stringcvt::string_utf8_from_ansi( info.pSongAuthor) );
p_info.meta_set( "comment", pfc::stringcvt::string_utf8_from_ansi( info.pSongComment) );
p_info.set_length( info.musicTimeInSec );
ymMusicDestroy(m_info);
}
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Write(
/* [size_is][in] */ const void *pv,
/* [in] */ ULONG cb,
/* [out] */ ULONG *pcbWritten)
{
t_size old_size = m_data.get_size(), new_size = m_position + cb;
if (new_size > old_size)
{
m_data.grow_size(new_size);
memset(&m_data.get_ptr()[old_size], 0,new_size-new_size);
}
memcpy(&m_data.get_ptr()[m_position], pv, cb);
m_position += cb;
if (pcbWritten)
*pcbWritten = cb;
return S_OK;
}
//void readboxfull(service_ptr_t<file> & p_file, abort_callback & p_abort)
//{
// readbox(p_file, p_abort);
// p_file->skip(4, p_abort);
//}
void readdata(stream_reader * p_file, abort_callback & p_abort)
{
m_data.set_size(pfc::downcast_guarded<t_size>(get_data_size()));
p_file->read(m_data.get_ptr(), m_data.get_size(), p_abort);
}
t_size get_size() const {return m_data.get_size();};
virtual HRESULT STDMETHODCALLTYPE Clone(
/* [out] */ __RPC__deref_out_opt IStream **ppstm)
{
*ppstm = new IStream_memblock_v2<IStream>(m_data.get_ptr(), m_data.get_size());
return S_OK;
}
