size_t wxChmInputStream::OnSysRead(void *buffer, size_t bufsize)
{
if ( m_pos >= m_size )
{
m_lasterror = wxSTREAM_EOF;
return 0;
}
m_lasterror = wxSTREAM_NO_ERROR;
// If the rest to read from the stream is less
// than the buffer size, then only read the rest
if ( m_pos + bufsize > m_size )
bufsize = m_size - m_pos;
if (m_contentStream->SeekI(m_pos) == wxInvalidOffset)
{
m_lasterror = wxSTREAM_EOF;
return 0;
}
size_t read = m_contentStream->Read(buffer, bufsize).LastRead();
m_pos += read;
if (m_contentStream->SeekI(m_pos) == wxInvalidOffset)
{
m_lasterror = wxSTREAM_READ_ERROR;
return 0;
}
if (read != bufsize)
m_lasterror = m_contentStream->GetLastError();
return read;
}
FbImportBook::FbImportBook(FbImportThread & owner, wxInputStream & in, const wxString & filename)
: m_parser(NULL)
, m_database(*owner.GetDatabase())
, m_filename(owner.GetRelative(filename))
, m_filepath(owner.GetAbsolute(filename))
, m_filetype(Ext(m_filename))
, m_message(filename)
, m_filesize(in.GetLength())
, m_archive(0)
, m_ok(false)
{
wxLogMessage(_("Import file %s"), m_filename.c_str());
m_ok = in.IsOk();
if (!m_ok) return;
if (m_filetype == wxT("fb2")) {
m_parser = new FbImportReaderFB2(in, true);
m_md5sum = m_parser->GetMd5();
} else if (m_filetype == wxT("epub")) {
m_md5sum = CalcMd5(in);
in.SeekI(0);
wxString rootfile = FbRootReaderEPUB(in).GetRoot();
in.SeekI(0);
m_parser = new FbDataReaderEPUB(in, rootfile);
} else {
m_md5sum = CalcMd5(in);
}
}
bool HexView::Load(wxInputStream& iStr)
{
wxFileOffset strSize = iStr.SeekI(0, wxFromEnd);
iStr.SeekI(0);
unsigned char* data = new unsigned char[strSize];
iStr.Read(data, strSize);
Load(data, strSize);
delete [] data;
return true;
}
wxFileOffset wxChmInputStream::OnSysSeek(wxFileOffset seek, wxSeekMode mode)
{
wxString mode_str = wxEmptyString;
if ( !m_contentStream || m_contentStream->Eof() )
{
m_lasterror = wxSTREAM_EOF;
return 0;
}
m_lasterror = wxSTREAM_NO_ERROR;
wxFileOffset nextpos;
switch ( mode )
{
case wxFromCurrent:
nextpos = seek + m_pos;
break;
case wxFromStart:
nextpos = seek;
break;
case wxFromEnd:
nextpos = m_size - 1 + seek;
break;
default:
nextpos = m_pos;
break; /* just to fool compiler, never happens */
}
m_pos=nextpos;
// Set current position on stream
m_contentStream->SeekI(m_pos);
return m_pos;
}
size_t wxChmInputStream::OnSysRead(void *buffer, size_t bufsize)
{
if ( m_pos >= m_size )
{
m_lasterror = wxSTREAM_EOF;
return 0;
}
m_lasterror = wxSTREAM_NO_ERROR;
// If the rest to read from the stream is less
// than the buffer size, than only read the rest
if ( m_pos + bufsize > m_size )
bufsize = m_size - m_pos;
m_contentStream->SeekI(m_pos);
m_contentStream->Read(buffer, bufsize);
m_pos +=bufsize;
m_contentStream->SeekI(m_pos);
return bufsize;
}
FbRootReaderEPUB::FbRootReaderEPUB(wxInputStream & in)
: m_ok(false)
{
{
wxZipInputStream zip(in);
while (FbSmartPtr<wxZipEntry> entry = zip.GetNextEntry()) {
if (entry->GetInternalName() == wxT("META-INF/container.xml")) {
m_ok = zip.OpenEntry(*entry) && Parse(zip);
break;
}
}
}
in.SeekI(0);
}
/** @brief Read a tokendatabase from disk
*
* @param tokenDatabase The tokendatabase to read into
* @param in The wxInputStream to read from
* @return true if the operation succeeded, false otherwise
*
*/
bool ClTokenDatabase::ReadIn( ClTokenDatabase& tokenDatabase, wxInputStream& in )
{
in.SeekI(4); // Magic number
int version = 0;
if (!ReadInt(in, version))
return false;
int i = 0;
if (version != 0x01)
{
return false;
}
tokenDatabase.Clear();
int read_count = 0;
wxMutexLocker(tokenDatabase.m_Mutex);
while (in.CanRead())
{
int packetType = 0;
if (!ReadInt(in, packetType))
return false;
switch (packetType)
{
case ClTokenPacketType_filenames:
if (!ClFilenameDatabase::ReadIn(tokenDatabase.m_FileDB, in))
return false;
break;
case ClTokenPacketType_tokens:
int packetCount = 0;
if (!ReadInt(in, packetCount))
return false;
for (i = 0; i < packetCount; ++i)
{
ClAbstractToken token;
if (!ClAbstractToken::ReadIn(token, in))
return false;
if (token.fileId != -1)
{
//ClTokenId tokId =
tokenDatabase.InsertToken(token);
//fprintf( stdout, " '%s' / '%s' / fId=%d location=%d:%d hash=%d dbEntryId=%d\n", (const char*)token.identifier.mb_str(), (const char*)token.displayName.mbc_str(), token.fileId, token.location.line, token.location.column, token.tokenHash, tokId );
read_count++;
}
}
break;
}
}
return true;
}
void ArchiveTestCase<ClassFactoryT>::ExtractArchive(wxInputStream& in,
const wxString& unarchiver)
{
// for an external unarchiver, unarchive to a tempdir
TempDir tmpdir;
if ((m_options & PipeIn) == 0) {
wxFileName fn(tmpdir.GetName());
fn.SetExt(wxT("arc"));
wxString tmparc = fn.GetPath(wxPATH_GET_SEPARATOR) + fn.GetFullName();
if (m_options & Stub)
in.SeekI(STUB_SIZE * 2);
// write the archive to a temporary file
{
wxFFileOutputStream out(tmparc);
if (out.IsOk())
out.Write(in);
}
// call unarchiver
if ( system(wxString::Format(unarchiver, tmparc.c_str()).mb_str()) == -1 )
{
wxLogError("Failed to run unarchiver command \"%s\"", unarchiver);
}
wxRemoveFile(tmparc);
}
else {
// for the non-seekable test, have the archiver extract "-" and
// feed it the archive via a pipe
PFileOutputStream out(wxString::Format(unarchiver, wxT("-")));
if (out.IsOk())
out.Write(in);
}
wxString dir = tmpdir.GetName();
VerifyDir(dir);
}
wxFileOffset SeekI( wxFileOffset pos, wxSeekMode mode )
{ wxASSERT(m_pStream); wxFileOffset fo = m_pStream->SeekI(pos, mode);
Synch(); return fo; }
bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
int bpp, int ncolors, int comp,
wxFileOffset bmpOffset, wxInputStream& stream,
bool verbose, bool IsBmp, bool hasPalette)
{
wxInt32 aDword, rmask = 0, gmask = 0, bmask = 0, amask = 0;
int rshift = 0, gshift = 0, bshift = 0, ashift = 0;
int rbits = 0, gbits = 0, bbits = 0;
wxInt32 dbuf[4];
wxInt8 bbuf[4];
wxUint8 aByte;
wxUint16 aWord;
// allocate space for palette if needed:
BMPPalette *cmap;
if ( bpp < 16 )
{
cmap = new BMPPalette[ncolors];
if ( !cmap )
{
if (verbose)
{
wxLogError(_("BMP: Couldn't allocate memory."));
}
return false;
}
}
else // no palette
{
cmap = NULL;
}
wxON_BLOCK_EXIT1(&BMPPalette::Free, cmap);
// destroy existing here instead of:
image->Destroy();
image->Create(width, height);
unsigned char *ptr = image->GetData();
if ( !ptr )
{
if ( verbose )
{
wxLogError( _("BMP: Couldn't allocate memory.") );
}
return false;
}
unsigned char *alpha;
if ( bpp == 32 )
{
// tell the image to allocate an alpha buffer
image->SetAlpha();
alpha = image->GetAlpha();
if ( !alpha )
{
if ( verbose )
{
wxLogError(_("BMP: Couldn't allocate memory."));
}
return false;
}
}
else // no alpha
{
alpha = NULL;
}
// Reading the palette, if it exists:
if ( bpp < 16 && ncolors != 0 )
{
unsigned char* r = new unsigned char[ncolors];
unsigned char* g = new unsigned char[ncolors];
unsigned char* b = new unsigned char[ncolors];
for (int j = 0; j < ncolors; j++)
{
if (hasPalette)
{
stream.Read(bbuf, 4);
cmap[j].b = bbuf[0];
cmap[j].g = bbuf[1];
cmap[j].r = bbuf[2];
r[j] = cmap[j].r;
g[j] = cmap[j].g;
b[j] = cmap[j].b;
}
else
{
//used in reading .ico file mask
r[j] = cmap[j].r =
g[j] = cmap[j].g =
b[j] = cmap[j].b = ( j ? 255 : 0 );
}
}
#if wxUSE_PALETTE
// Set the palette for the wxImage
image->SetPalette(wxPalette(ncolors, r, g, b));
#endif // wxUSE_PALETTE
delete[] r;
delete[] g;
delete[] b;
}
else if ( bpp == 16 || bpp == 32 )
{
if ( comp == BI_BITFIELDS )
{
int bit;
stream.Read(dbuf, 4 * 3);
rmask = wxINT32_SWAP_ON_BE(dbuf[0]);
gmask = wxINT32_SWAP_ON_BE(dbuf[1]);
bmask = wxINT32_SWAP_ON_BE(dbuf[2]);
// find shift amount (Least significant bit of mask)
for (bit = bpp-1; bit>=0; bit--)
{
if (bmask & (1 << bit))
bshift = bit;
if (gmask & (1 << bit))
gshift = bit;
if (rmask & (1 << bit))
rshift = bit;
}
// Find number of bits in mask (MSB-LSB+1)
for (bit = 0; bit < bpp; bit++)
{
if (bmask & (1 << bit))
bbits = bit-bshift+1;
if (gmask & (1 << bit))
gbits = bit-gshift+1;
if (rmask & (1 << bit))
rbits = bit-rshift+1;
}
}
else if ( bpp == 16 )
{
rmask = 0x7C00;
gmask = 0x03E0;
bmask = 0x001F;
rshift = 10;
gshift = 5;
bshift = 0;
rbits = 5;
gbits = 5;
bbits = 5;
}
else if ( bpp == 32 )
{
rmask = 0x00FF0000;
gmask = 0x0000FF00;
bmask = 0x000000FF;
amask = 0xFF000000;
ashift = 24;
rshift = 16;
gshift = 8;
bshift = 0;
rbits = 8;
gbits = 8;
bbits = 8;
}
}
/*
* Reading the image data
*/
if ( IsBmp )
{
// NOTE: seeking a positive amount in wxFromCurrent mode allows us to
// load even non-seekable streams (see wxInputStream::SeekI docs)!
const wxFileOffset pos = stream.TellI();
if (pos != wxInvalidOffset && bmpOffset > pos)
if (stream.SeekI(bmpOffset - pos, wxFromCurrent) == wxInvalidOffset)
return false;
//else: icon, just carry on
}
unsigned char *data = ptr;
/* set the whole image to the background color */
if ( bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8) )
{
for (int i = 0; i < width * height; i++)
{
*ptr++ = cmap[0].r;
*ptr++ = cmap[0].g;
*ptr++ = cmap[0].b;
}
ptr = data;
}
int linesize = ((width * bpp + 31) / 32) * 4;
/* BMPs are stored upside down */
for ( int line = (height - 1); line >= 0; line-- )
{
int linepos = 0;
for ( int column = 0; column < width ; )
{
if ( bpp < 16 )
{
linepos++;
aByte = stream.GetC();
if ( bpp == 1 )
{
for (int bit = 0; bit < 8 && column < width; bit++)
{
int index = ((aByte & (0x80 >> bit)) ? 1 : 0);
ptr[poffset] = cmap[index].r;
ptr[poffset + 1] = cmap[index].g;
ptr[poffset + 2] = cmap[index].b;
column++;
}
}
else if ( bpp == 4 )
{
if ( comp == BI_RLE4 )
{
wxUint8 first;
first = aByte;
aByte = stream.GetC();
if ( first == 0 )
{
if ( aByte == 0 )
{
if ( column > 0 )
column = width;
}
else if ( aByte == 1 )
{
column = width;
line = -1;
}
else if ( aByte == 2 )
{
aByte = stream.GetC();
column += aByte;
linepos = column * bpp / 4;
aByte = stream.GetC();
line -= aByte; // upside down
}
else
{
int absolute = aByte;
wxUint8 nibble[2] ;
int readBytes = 0 ;
for (int k = 0; k < absolute; k++)
{
if ( !(k % 2 ) )
{
++readBytes ;
aByte = stream.GetC();
nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
nibble[1] = (wxUint8)( aByte & 0x0F ) ;
}
ptr[poffset ] = cmap[nibble[k%2]].r;
ptr[poffset + 1] = cmap[nibble[k%2]].g;
ptr[poffset + 2] = cmap[nibble[k%2]].b;
column++;
if ( k % 2 )
linepos++;
}
if ( readBytes & 0x01 )
aByte = stream.GetC();
}
}
else
{
wxUint8 nibble[2] ;
nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
nibble[1] = (wxUint8)( aByte & 0x0F ) ;
for ( int l = 0; l < first && column < width; l++ )
{
ptr[poffset ] = cmap[nibble[l%2]].r;
ptr[poffset + 1] = cmap[nibble[l%2]].g;
ptr[poffset + 2] = cmap[nibble[l%2]].b;
column++;
if ( l % 2 )
linepos++;
}
}
}
// load the jpeg2000 file format
bool wxJPEG2000Handler::LoadFile(wxImage *image, wxInputStream& stream, bool verbose, int index)
{
opj_dparameters_t parameters; /* decompression parameters */
opj_event_mgr_t event_mgr; /* event manager */
opj_image_t *opjimage = NULL;
unsigned char *src = NULL;
unsigned char *ptr;
int file_length, jp2c_point, jp2h_point;
unsigned long int jp2hboxlen, jp2cboxlen;
opj_codestream_info_t cstr_info; /* Codestream information structure */
unsigned char hdr[24];
int jpfamform;
// destroy the image
image->Destroy();
/* read the beginning of the file to check the type */
if (!stream.Read(hdr, WXSIZEOF(hdr)))
return false;
if ((jpfamform = jpeg2000familytype(hdr, WXSIZEOF(hdr))) < 0)
return false;
stream.SeekI(0, wxFromStart);
/* handle to a decompressor */
opj_dinfo_t* dinfo = NULL;
opj_cio_t *cio = NULL;
/* configure the event callbacks */
memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
event_mgr.error_handler = jpeg2000_error_callback;
event_mgr.warning_handler = jpeg2000_warning_callback;
event_mgr.info_handler = jpeg2000_info_callback;
/* set decoding parameters to default values */
opj_set_default_decoder_parameters(¶meters);
/* prepare parameters */
strncpy(parameters.infile, "", sizeof(parameters.infile) - 1);
strncpy(parameters.outfile, "", sizeof(parameters.outfile) - 1);
parameters.decod_format = jpfamform;
parameters.cod_format = BMP_DFMT;
if (m_reducefactor)
parameters.cp_reduce = m_reducefactor;
if (m_qualitylayers)
parameters.cp_layer = m_qualitylayers;
/*if (n_components)
parameters. = n_components;*/
/* JPWL only */
#ifdef USE_JPWL
parameters.jpwl_exp_comps = m_expcomps;
parameters.jpwl_max_tiles = m_maxtiles;
parameters.jpwl_correct = m_enablejpwl;
#endif /* USE_JPWL */
/* get a decoder handle */
if (jpfamform == JP2_CFMT || jpfamform == MJ2_CFMT)
dinfo = opj_create_decompress(CODEC_JP2);
else if (jpfamform == J2K_CFMT)
dinfo = opj_create_decompress(CODEC_J2K);
else
return false;
/* find length of the stream */
stream.SeekI(0, wxFromEnd);
file_length = (int) stream.TellI();
/* it's a movie */
if (jpfamform == MJ2_CFMT) {
/* search for the first codestream box and the movie header box */
jp2c_point = searchjpeg2000c(stream, file_length, m_framenum);
jp2h_point = searchjpeg2000headerbox(stream, file_length);
// read the jp2h box and store it
stream.SeekI(jp2h_point, wxFromStart);
stream.Read(&jp2hboxlen, sizeof(unsigned long int));
jp2hboxlen = BYTE_SWAP4(jp2hboxlen);
// read the jp2c box and store it
stream.SeekI(jp2c_point, wxFromStart);
stream.Read(&jp2cboxlen, sizeof(unsigned long int));
jp2cboxlen = BYTE_SWAP4(jp2cboxlen);
// malloc memory source
src = (unsigned char *) malloc(jpeg2000headSIZE + jp2hboxlen + jp2cboxlen);
// copy the jP and ftyp
memcpy(src, jpeg2000head, jpeg2000headSIZE);
// copy the jp2h
stream.SeekI(jp2h_point, wxFromStart);
stream.Read(&src[jpeg2000headSIZE], jp2hboxlen);
// copy the jp2c
stream.SeekI(jp2c_point, wxFromStart);
stream.Read(&src[jpeg2000headSIZE + jp2hboxlen], jp2cboxlen);
} else if (jpfamform == JP2_CFMT || jpfamform == J2K_CFMT) {
/* It's a plain image */
/* get data */
stream.SeekI(0, wxFromStart);
src = (unsigned char *) malloc(file_length);
stream.Read(src, file_length);
} else
return false;
/* catch events using our callbacks and give a local context */
opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
/* setup the decoder decoding parameters using user parameters */
opj_setup_decoder(dinfo, ¶meters);
/* open a byte stream */
if (jpfamform == MJ2_CFMT)
cio = opj_cio_open((opj_common_ptr)dinfo, src, jpeg2000headSIZE + jp2hboxlen + jp2cboxlen);
else if (jpfamform == JP2_CFMT || jpfamform == J2K_CFMT)
cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
else {
free(src);
return false;
}
/* decode the stream and fill the image structure */
opjimage = opj_decode_with_info(dinfo, cio, &cstr_info);
if (!opjimage) {
wxMutexGuiEnter();
wxLogError(wxT("JPEG 2000 failed to decode image!"));
wxMutexGuiLeave();
opj_destroy_decompress(dinfo);
opj_cio_close(cio);
free(src);
return false;
}
/* close the byte stream */
opj_cio_close(cio);
/*
- At this point, we have the structure "opjimage" that is filled with decompressed
data, as processed by the OpenJPEG decompression engine
- We need to fill the class "image" with the proper pixel sample values
*/
{
int shiftbpp;
int c, tempcomps;
// check components number
if (m_components > opjimage->numcomps)
m_components = opjimage->numcomps;
// check image depth (only on the first one, for now)
if (m_components)
shiftbpp = opjimage->comps[m_components - 1].prec - 8;
else
shiftbpp = opjimage->comps[0].prec - 8;
// prepare image size
if (m_components)
image->Create(opjimage->comps[m_components - 1].w, opjimage->comps[m_components - 1].h, true);
else
image->Create(opjimage->comps[0].w, opjimage->comps[0].h, true);
// access image raw data
image->SetMask(false);
ptr = image->GetData();
// workaround for components different from 1 or 3
if ((opjimage->numcomps != 1) && (opjimage->numcomps != 3)) {
#ifndef __WXGTK__
wxMutexGuiEnter();
#endif /* __WXGTK__ */
wxLogMessage(wxT("JPEG2000: weird number of components"));
#ifndef __WXGTK__
wxMutexGuiLeave();
#endif /* __WXGTK__ */
tempcomps = 1;
} else
tempcomps = opjimage->numcomps;
// workaround for subsampled components
for (c = 1; c < tempcomps; c++) {
if ((opjimage->comps[c].w != opjimage->comps[c - 1].w) || (opjimage->comps[c].h != opjimage->comps[c - 1].h)) {
tempcomps = 1;
break;
}
}
// workaround for different precision components
for (c = 1; c < tempcomps; c++) {
if (opjimage->comps[c].bpp != opjimage->comps[c - 1].bpp) {
tempcomps = 1;
break;
}
}
// only one component selected
if (m_components)
tempcomps = 1;
// RGB color picture
if (tempcomps == 3) {
int row, col;
int *r = opjimage->comps[0].data;
int *g = opjimage->comps[1].data;
int *b = opjimage->comps[2].data;
if (shiftbpp > 0) {
for (row = 0; row < opjimage->comps[0].h; row++) {
for (col = 0; col < opjimage->comps[0].w; col++) {
*(ptr++) = (*(r++)) >> shiftbpp;
*(ptr++) = (*(g++)) >> shiftbpp;
*(ptr++) = (*(b++)) >> shiftbpp;
}
}
} else if (shiftbpp < 0) {
for (row = 0; row < opjimage->comps[0].h; row++) {
for (col = 0; col < opjimage->comps[0].w; col++) {
*(ptr++) = (*(r++)) << -shiftbpp;
*(ptr++) = (*(g++)) << -shiftbpp;
*(ptr++) = (*(b++)) << -shiftbpp;
}
}
} else {
for (row = 0; row < opjimage->comps[0].h; row++) {
for (col = 0; col < opjimage->comps[0].w; col++) {
*(ptr++) = *(r++);
*(ptr++) = *(g++);
*(ptr++) = *(b++);
}
}
}
}
/* internal mini-search for a box signature */
int
jpeg2000_file_parse(wxInputStream& stream, unsigned long int filepoint, unsigned long int filelimit, int level,
char *scansign, unsigned long int *scanpoint)
{
unsigned long int LBox = 0x00000000;
char TBox[5] = "\0\0\0\0";
int8byte XLBox = 0x0000000000000000;
unsigned long int box_length = 0;
int last_box = 0, box_num = 0;
int box_type = ANY_BOX;
unsigned char fourbytes[4];
int box_number = 0;
/* cycle all over the file */
box_num = 0;
last_box = 0;
while (!last_box) {
/* do not exceed file limit */
if (filepoint >= filelimit)
return (0);
/* seek on file */
if (stream.SeekI(filepoint, wxFromStart) == wxInvalidOffset)
return (-1);
/* read the mandatory LBox, 4 bytes */
if (!stream.Read(fourbytes, 4)) {
wxLogError(wxT("Problem reading LBox from the file (file ended?)"));
return -1;
};
LBox = STREAM_TO_UINT32(fourbytes, 0);
/* read the mandatory TBox, 4 bytes */
if (!stream.Read(TBox, 4)) {
wxLogError(wxT("Problem reading TBox from the file (file ended?)"));
return -1;
};
/* look if scansign is got */
if ((scansign != NULL) && (memcmp(TBox, scansign, 4) == 0)) {
/* hack/exploit */
// stop as soon as you find the level-th codebox
if (box_number == level) {
memcpy(scansign, " ", 4);
*scanpoint = filepoint;
return (0);
} else
box_number++;
};
/* determine the box type */
for (box_type = JP_BOX; box_type < UNK_BOX; box_type++)
if (memcmp(TBox, jpeg2000box[box_type].value, 4) == 0)
break;
/* read the optional XLBox, 8 bytes */
if (LBox == 1) {
if (!stream.Read(&XLBox, 8)) {
wxLogError(wxT("Problem reading XLBox from the file (file ended?)"));
return -1;
};
box_length = (unsigned long int) BYTE_SWAP8(XLBox);
} else if (LBox == 0x00000000) {
/* last box in file */
last_box = 1;
box_length = filelimit - filepoint;
} else
box_length = LBox;
/* go deep in the box */
jpeg2000_box_handler_function((jpeg2000boxtype) box_type,
stream, (LBox == 1) ? (filepoint + 16) : (filepoint + 8),
filepoint + box_length, level, scansign, scanpoint);
/* if it's a superbox go inside it */
if (jpeg2000box[box_type].sbox)
jpeg2000_file_parse(stream, (LBox == 1) ? (filepoint + 16) : (filepoint + 8), filepoint + box_length,
level, scansign, scanpoint);
/* increment box number and filepoint*/
box_num++;
filepoint += box_length;
};
/* all good */
return (0);
}
// load the mxf file format
bool wxMXFHandler::LoadFile(wxImage *image, wxInputStream& stream, bool verbose, int index)
{
opj_dparameters_t parameters; /* decompression parameters */
opj_event_mgr_t event_mgr; /* event manager */
opj_image_t *opjimage = NULL;
unsigned char *src = NULL;
unsigned char *ptr;
int file_length, j2k_point, j2k_len;
opj_codestream_info_t cstr_info; /* Codestream information structure */
// destroy the image
image->Destroy();
/* handle to a decompressor */
opj_dinfo_t* dinfo = NULL;
opj_cio_t *cio = NULL;
/* configure the event callbacks (not required) */
memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
event_mgr.error_handler = mxf_error_callback;
event_mgr.warning_handler = mxf_warning_callback;
event_mgr.info_handler = mxf_info_callback;
/* set decoding parameters to default values */
opj_set_default_decoder_parameters(¶meters);
/* prepare parameters */
strncpy(parameters.infile, "", sizeof(parameters.infile)-1);
strncpy(parameters.outfile, "", sizeof(parameters.outfile)-1);
parameters.decod_format = J2K_CFMT;
parameters.cod_format = BMP_DFMT;
if (m_reducefactor)
parameters.cp_reduce = m_reducefactor;
if (m_qualitylayers)
parameters.cp_layer = m_qualitylayers;
/*if (n_components)
parameters. = n_components;*/
/* JPWL only */
#ifdef USE_JPWL
parameters.jpwl_exp_comps = m_expcomps;
parameters.jpwl_max_tiles = m_maxtiles;
parameters.jpwl_correct = m_enablejpwl;
#endif /* USE_JPWL */
/* get a decoder handle */
dinfo = opj_create_decompress(CODEC_J2K);
/* find length of the stream */
stream.SeekI(0, wxFromEnd);
file_length = (int) stream.TellI();
/* search for the m_framenum codestream position and length */
//jp2c_point = searchjp2c(stream, file_length, m_framenum);
//jp2c_len = searchjp2c(stream, file_length, m_framenum);
j2k_point = 0;
j2k_len = 10;
// malloc memory source
src = (unsigned char *) malloc(j2k_len);
// copy the jp2c
stream.SeekI(j2k_point, wxFromStart);
stream.Read(src, j2k_len);
/* catch events using our callbacks and give a local context */
opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
/* setup the decoder decoding parameters using user parameters */
opj_setup_decoder(dinfo, ¶meters);
/* open a byte stream */
cio = opj_cio_open((opj_common_ptr)dinfo, src, j2k_len);
/* decode the stream and fill the image structure */
opjimage = opj_decode_with_info(dinfo, cio, &cstr_info);
if (!opjimage) {
wxMutexGuiEnter();
wxLogError(wxT("MXF: failed to decode image!"));
wxMutexGuiLeave();
opj_destroy_decompress(dinfo);
opj_cio_close(cio);
free(src);
return false;
}
/* close the byte stream */
opj_cio_close(cio);
/* common rendering method */
#include "imagjpeg2000.cpp"
wxMutexGuiEnter();
wxLogMessage(wxT("MXF: image loaded."));
wxMutexGuiLeave();
/* close openjpeg structs */
opj_destroy_decompress(dinfo);
opj_image_destroy(opjimage);
free(src);
if (!image->Ok())
return false;
else
return true;
}