Alien-FreeImage
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src/Source/FreeImage/PluginEXR.cpp view on Meta::CPAN
static BOOL DLL_CALLCONV
Save(FreeImageIO *io, FIBITMAP *dib, fi_handle handle, int page, int flags, void *data) {
const char *channel_name[4] = { "R", "G", "B", "A" };
BOOL bIsFlipped = FALSE;
half *halfData = NULL;
if(!dib || !handle) return FALSE;
try {
// check for EXR_LC compression and verify that the format is RGB
if((flags & EXR_LC) == EXR_LC) {
FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib);
if(((image_type != FIT_RGBF) && (image_type != FIT_RGBAF)) || ((flags & EXR_FLOAT) == EXR_FLOAT)) {
THROW (Iex::IoExc, "EXR_LC compression is only available with RGB[A]F images");
}
if((FreeImage_GetWidth(dib) % 2) || (FreeImage_GetHeight(dib) % 2)) {
THROW (Iex::IoExc, "EXR_LC compression only works when the width and height are a multiple of 2");
}
}
src/Source/FreeImage/PluginJPEG.cpp view on Meta::CPAN
/**
Handy subroutine to test whether a saved marker is an ICC profile marker.
*/
static BOOL
marker_is_icc(jpeg_saved_marker_ptr marker) {
// marker identifying string "ICC_PROFILE" (null-terminated)
const BYTE icc_signature[12] = { 0x49, 0x43, 0x43, 0x5F, 0x50, 0x52, 0x4F, 0x46, 0x49, 0x4C, 0x45, 0x00 };
if(marker->marker == ICC_MARKER) {
// verify the identifying string
if(marker->data_length >= ICC_HEADER_SIZE) {
if(memcmp(icc_signature, marker->data, sizeof(icc_signature)) == 0) {
return TRUE;
}
}
}
return FALSE;
}
src/Source/FreeImage/PluginJPEG.cpp view on Meta::CPAN
const size_t xmp_signature_size = strlen(xmp_signature) + 1;
size_t length = datalen;
BYTE *profile = (BYTE*)dataptr;
if(length <= xmp_signature_size) {
// avoid reading corrupted or empty data
return FALSE;
}
// verify the identifying string
if(memcmp(xmp_signature, profile, strlen(xmp_signature)) == 0) {
// XMP profile
profile += xmp_signature_size;
length -= xmp_signature_size;
// create a tag
FITAG *tag = FreeImage_CreateTag();
if(tag) {
src/Source/FreeImage/PluginJPEG.cpp view on Meta::CPAN
jpeg_write_exif_profile_raw(j_compress_ptr cinfo, FIBITMAP *dib) {
// marker identifying string for Exif = "Exif\0\0"
BYTE exif_signature[6] = { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
FITAG *tag_exif = NULL;
FreeImage_GetMetadata(FIMD_EXIF_RAW, dib, g_TagLib_ExifRawFieldName, &tag_exif);
if(tag_exif) {
const BYTE *tag_value = (BYTE*)FreeImage_GetTagValue(tag_exif);
// verify the identifying string
if(memcmp(exif_signature, tag_value, sizeof(exif_signature)) != 0) {
// not an Exif profile
return FALSE;
}
if(NULL != tag_value) {
DWORD tag_length = FreeImage_GetTagLength(tag_exif);
BYTE *profile = (BYTE*)malloc(tag_length * sizeof(BYTE));
if(profile == NULL) return FALSE;
src/Source/FreeImage/PluginTARGA.cpp view on Meta::CPAN
}
// check header.cm_size, don't allow 0 or anything bigger than 32
if(header.cm_size == 0 || header.cm_size > 32) {
return FALSE;
}
}
// the width/height shouldn't be 0, right ?
if(header.is_width == 0 || header.is_height == 0) {
return FALSE;
}
// let's now verify all the types that are supported by FreeImage (this is our final verification)
switch(header.image_type) {
case TGA_CMAP:
case TGA_RGB:
case TGA_MONO:
case TGA_RLECMAP:
case TGA_RLERGB:
case TGA_RLEMONO:
switch(header.is_pixel_depth) {
case 8 :
case 16:
src/Source/LibJPEG/jcmaster.c view on Meta::CPAN
/* Make sure components are not sent twice */
for (ci = 0; ci < ncomps; ci++) {
thisi = scanptr->component_index[ci];
if (component_sent[thisi])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
component_sent[thisi] = TRUE;
}
}
}
/* Now verify that everything got sent. */
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
/* For progressive mode, we only check that at least some DC data
* got sent for each component; the spec does not require that all bits
* of all coefficients be transmitted. Would it be wiser to enforce
* transmission of all coefficient bits??
*/
for (ci = 0; ci < cinfo->num_components; ci++) {
if (last_bitpos[ci][0] < 0)
ERREXIT(cinfo, JERR_MISSING_DATA);
src/Source/LibJPEG/jdapimin.c view on Meta::CPAN
if (cinfo->global_state < DSTATE_READY ||
cinfo->global_state > DSTATE_STOPPING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
return cinfo->inputctl->has_multiple_scans;
}
/*
* Finish JPEG decompression.
*
* This will normally just verify the file trailer and release temp storage.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL(boolean)
jpeg_finish_decompress (j_decompress_ptr cinfo)
{
if ((cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) {
src/Source/LibJPEG/jdarith.c view on Meta::CPAN
if (cinfo->Ah != 0) {
/* Successive approximation refinement scan: must have Al = Ah-1. */
if (cinfo->Ah-1 != cinfo->Al)
goto bad;
}
if (cinfo->Al > 13) { /* need not check for < 0 */
bad:
ERREXIT4(cinfo, JERR_BAD_PROGRESSION,
cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al);
}
/* Update progression status, and verify that scan order is legal.
* Note that inter-scan inconsistencies are treated as warnings
* not fatal errors ... not clear if this is right way to behave.
*/
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
int coefi, cindex = cinfo->cur_comp_info[ci]->component_index;
int *coef_bit_ptr = & cinfo->coef_bits[cindex][0];
if (cinfo->Ss && coef_bit_ptr[0] < 0) /* AC without prior DC scan */
WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0);
for (coefi = cinfo->Ss; coefi <= cinfo->Se; coefi++) {
int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi];
src/Source/LibJPEG/jdhuff.c view on Meta::CPAN
/* Arguably the maximum Al value should be less than 13 for 8-bit precision,
* but the spec doesn't say so, and we try to be liberal about what we
* accept. Note: large Al values could result in out-of-range DC
* coefficients during early scans, leading to bizarre displays due to
* overflows in the IDCT math. But we won't crash.
*/
bad:
ERREXIT4(cinfo, JERR_BAD_PROGRESSION,
cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al);
}
/* Update progression status, and verify that scan order is legal.
* Note that inter-scan inconsistencies are treated as warnings
* not fatal errors ... not clear if this is right way to behave.
*/
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
int coefi, cindex = cinfo->cur_comp_info[ci]->component_index;
int *coef_bit_ptr = & cinfo->coef_bits[cindex][0];
if (cinfo->Ss && coef_bit_ptr[0] < 0) /* AC without prior DC scan */
WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0);
for (coefi = cinfo->Ss; coefi <= cinfo->Se; coefi++) {
int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi];
src/Source/LibJPEG/libjpeg.txt view on Meta::CPAN
Decompression with raw data output implies bypassing all postprocessing.
You must deal with the color space and sampling factors present in the
incoming file. If your application only handles, say, 2h1v YCbCr data,
you must check for and fail on other color spaces or other sampling factors.
The library will not convert to a different color space for you.
To obtain raw data output, set cinfo->raw_data_out = TRUE before
jpeg_start_decompress() (it is set FALSE by jpeg_read_header()). Be sure to
verify that the color space and sampling factors are ones you can handle.
Furthermore, set cinfo->do_fancy_upsampling = FALSE if you want to get real
downsampled data (it is set TRUE by jpeg_read_header()).
Then call jpeg_read_raw_data() in place of jpeg_read_scanlines(). The
decompression process is otherwise the same as usual.
jpeg_read_raw_data() returns one MCU row per call, and thus you must pass a
buffer of at least max_v_samp_factor*block_size scanlines (scanline counting
is the same as for raw-data compression). The buffer you pass must be large
enough to hold the actual data plus padding to DCT-block boundaries. As with
compression, any entirely dummy DCT blocks are not processed so you need not
src/Source/LibJPEG/rdbmp.c view on Meta::CPAN
INT32 biWidth;
INT32 biHeight;
unsigned int biPlanes;
INT32 biCompression;
INT32 biXPelsPerMeter,biYPelsPerMeter;
INT32 biClrUsed = 0;
int mapentrysize = 0; /* 0 indicates no colormap */
INT32 bPad;
JDIMENSION row_width;
/* Read and verify the bitmap file header */
if (! ReadOK(source->pub.input_file, bmpfileheader, 14))
ERREXIT(cinfo, JERR_INPUT_EOF);
if (GET_2B(bmpfileheader,0) != 0x4D42) /* 'BM' */
ERREXIT(cinfo, JERR_BMP_NOT);
bfOffBits = (INT32) GET_4B(bmpfileheader,10);
/* We ignore the remaining fileheader fields */
/* The infoheader might be 12 bytes (OS/2 1.x), 40 bytes (Windows),
* or 64 bytes (OS/2 2.x). Check the first 4 bytes to find out which.
*/
src/Source/LibOpenJPEG/jp2.c view on Meta::CPAN
}
}
/* testcases 451.pdf.SIGSEGV.f4c.3723, 451.pdf.SIGSEGV.5b5.3723 and
66ea31acbb0f23a2bbc91f64d69a03f5_signal_sigsegv_13937c0_7030_5725.pdf */
if (color->jp2_pclr && color->jp2_pclr->cmap) {
OPJ_UINT16 nr_channels = color->jp2_pclr->nr_channels;
opj_jp2_cmap_comp_t *cmap = color->jp2_pclr->cmap;
OPJ_BOOL *pcol_usage, is_sane = OPJ_TRUE;
/* verify that all original components match an existing one */
for (i = 0; i < nr_channels; i++) {
if (cmap[i].cmp >= image->numcomps) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n", cmap[i].cmp, image->numcomps);
is_sane = OPJ_FALSE;
}
}
pcol_usage = opj_calloc(nr_channels, sizeof(OPJ_BOOL));
if (!pcol_usage) {
opj_event_msg(p_manager, EVT_ERROR, "Unexpected OOM.\n");
return OPJ_FALSE;
}
/* verify that no component is targeted more than once */
for (i = 0; i < nr_channels; i++) {
OPJ_UINT16 pcol = cmap[i].pcol;
assert(cmap[i].mtyp == 0 || cmap[i].mtyp == 1);
if (pcol >= nr_channels) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid component/palette index for direct mapping %d.\n", pcol);
is_sane = OPJ_FALSE;
}
else if (pcol_usage[pcol] && cmap[i].mtyp == 1) {
opj_event_msg(p_manager, EVT_ERROR, "Component %d is mapped twice.\n", pcol);
is_sane = OPJ_FALSE;
}
else if (cmap[i].mtyp == 0 && cmap[i].pcol != 0) {
/* I.5.3.5 PCOL: If the value of the MTYP field for this channel is 0, then
* the value of this field shall be 0. */
opj_event_msg(p_manager, EVT_ERROR, "Direct use at #%d however pcol=%d.\n", i, pcol);
is_sane = OPJ_FALSE;
}
else
pcol_usage[pcol] = OPJ_TRUE;
}
/* verify that all components are targeted at least once */
for (i = 0; i < nr_channels; i++) {
if (!pcol_usage[i] && cmap[i].mtyp != 0) {
opj_event_msg(p_manager, EVT_ERROR, "Component %d doesn't have a mapping.\n", i);
is_sane = OPJ_FALSE;
}
}
opj_free(pcol_usage);
if (!is_sane) {
return OPJ_FALSE;
}
src/Source/LibOpenJPEG/t2.c view on Meta::CPAN
}
do {
if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
return OPJ_FALSE;
}
#ifdef USE_JPWL
/* we need here a j2k handle to verify if making a check to
the validity of cblocks parameters is selected from user (-W) */
/* let's check that we are not exceeding */
if ((l_cblk->len + l_seg->newlen) > 8192) {
opj_event_msg(p_t2->cinfo, EVT_WARNING,
"JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
if (!JPWL_ASSUME) {
opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
return OPJ_FALSE;
src/Source/LibOpenJPEG/t2.c view on Meta::CPAN
}
do {
if (* p_data_read + l_seg->newlen > p_max_length) {
fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
return OPJ_FALSE;
}
#ifdef USE_JPWL
/* we need here a j2k handle to verify if making a check to
the validity of cblocks parameters is selected from user (-W) */
/* let's check that we are not exceeding */
if ((l_cblk->len + l_seg->newlen) > 8192) {
opj_event_msg(p_t2->cinfo, EVT_WARNING,
"JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
if (!JPWL_ASSUME) {
opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
return -999;
src/Source/LibPNG/png.c view on Meta::CPAN
PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
};
static int
png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
png_const_bytep profile, uLong adler)
{
/* The quick check is to verify just the MD5 signature and trust the
* rest of the data. Because the profile has already been verified for
* correctness this is safe. png_colorspace_set_sRGB will check the 'intent'
* field too, so if the profile has been edited with an intent not defined
* by sRGB (but maybe defined by a later ICC specification) the read of
* the profile will fail at that point.
*/
png_uint_32 length = 0;
png_uint_32 intent = 0x10000; /* invalid */
#if PNG_sRGB_PROFILE_CHECKS > 1
src/Source/LibPNG/pngpriv.h view on Meta::CPAN
#ifndef PNG_DLL_EXPORT
# define PNG_DLL_EXPORT
#endif
/* SECURITY and SAFETY:
*
* By default libpng is built without any internal limits on image size,
* individual heap (png_malloc) allocations or the total amount of memory used.
* If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used
* (unless individually overridden). These limits are believed to be fairly
* safe, but builders of secure systems should verify the values against the
* real system capabilities.
*/
#ifdef PNG_SAFE_LIMITS_SUPPORTED
/* 'safe' limits */
# ifndef PNG_USER_WIDTH_MAX
# define PNG_USER_WIDTH_MAX 1000000
# endif
# ifndef PNG_USER_HEIGHT_MAX
# define PNG_USER_HEIGHT_MAX 1000000
# endif
src/Source/LibPNG/pngpriv.h view on Meta::CPAN
/* Moved to pngpriv.h at libpng-1.5.0 */
/* NOTE: some of these may have been used in external applications as
* these definitions were exposed in pngconf.h prior to 1.5.
*/
/* If you are running on a machine where you cannot allocate more
* than 64K of memory at once, uncomment this. While libpng will not
* normally need that much memory in a chunk (unless you load up a very
* large file), zlib needs to know how big of a chunk it can use, and
* libpng thus makes sure to check any memory allocation to verify it
* will fit into memory.
*
* zlib provides 'MAXSEG_64K' which, if defined, indicates the
* same limit and pngconf.h (already included) sets the limit
* if certain operating systems are detected.
*/
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
# define PNG_MAX_MALLOC_64K
#endif
src/Source/LibPNG/pngpriv.h view on Meta::CPAN
PNG_EMPTY);
/* Read data from whatever input you are using into the "data" buffer */
PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data,
png_size_t length),PNG_EMPTY);
/* Read bytes into buf, and update png_ptr->crc */
PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf,
png_uint_32 length),PNG_EMPTY);
/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr,
png_uint_32 skip),PNG_EMPTY);
/* Read the CRC from the file and compare it to the libpng calculated CRC */
PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY);
/* Calculate the CRC over a section of data. Note that we are only
* passing a maximum of 64K on systems that have this as a memory limit,
* since this is the maximum buffer size we can specify.
*/
src/Source/LibPNG/pngread.c view on Meta::CPAN
{
png_read_row(png_ptr, *rp, NULL);
rp++;
}
}
}
#endif /* SEQUENTIAL_READ */
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the end of the PNG file. Will not read past the end of the
* file, will verify the end is accurate, and will read any comments
* or time information at the end of the file, if info is not NULL.
*/
void PNGAPI
png_read_end(png_structrp png_ptr, png_inforp info_ptr)
{
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
int keep;
#endif
png_debug(1, "in png_read_end");
src/Source/LibPNG/pngrutil.c view on Meta::CPAN
png_crc_finish(png_ptr, length);
PNG_UNUSED(info_ptr)
PNG_UNUSED(keep)
#endif /* !READ_UNKNOWN_CHUNKS */
/* Check for unhandled critical chunks */
if (handled == 0 && PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
png_chunk_error(png_ptr, "unhandled critical chunk");
}
/* This function is called to verify that a chunk name is valid.
* This function can't have the "critical chunk check" incorporated
* into it, since in the future we will need to be able to call user
* functions to handle unknown critical chunks after we check that
* the chunk name itself is valid.
*/
/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is:
*
* ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
*/
src/Source/LibTIFF4/tif_dirwrite.c view on Meta::CPAN
(*ndir)++;
return(1);
}
/* We always write LONG8 for BigTIFF, no checking needed. */
if( tif->tif_flags&TIFF_BIGTIFF )
return TIFFWriteDirectoryTagCheckedLong8Array(tif,ndir,dir,
tag,count,value);
/*
** For classic tiff we want to verify everything is in range for LONG
** and convert to long format.
*/
p = _TIFFmalloc(count*sizeof(uint32));
if (p==NULL)
{
TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
return(0);
}
src/Source/LibTIFF4/tif_dirwrite.c view on Meta::CPAN
(*ndir)++;
return(1);
}
/* We always write IFD8 for BigTIFF, no checking needed. */
if( tif->tif_flags&TIFF_BIGTIFF )
return TIFFWriteDirectoryTagCheckedIfd8Array(tif,ndir,dir,
tag,count,value);
/*
** For classic tiff we want to verify everything is in range for IFD
** and convert to long format.
*/
p = _TIFFmalloc(count*sizeof(uint32));
if (p==NULL)
{
TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
return(0);
}
src/Source/LibTIFF4/tif_getimage.c view on Meta::CPAN
}
break;
case PHOTOMETRIC_YCBCR:
/* It would probably be nice to have a reality check here. */
if (planarconfig == PLANARCONFIG_CONTIG)
/* can rely on libjpeg to convert to RGB */
/* XXX should restore current state on exit */
switch (compress) {
case COMPRESSION_JPEG:
/*
* TODO: when complete tests verify complete desubsampling
* and YCbCr handling, remove use of TIFFTAG_JPEGCOLORMODE in
* favor of tif_getimage.c native handling
*/
TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
img->photometric = PHOTOMETRIC_RGB;
break;
default:
/* do nothing */;
break;
}
src/Source/LibTIFF4/tif_getimage.c view on Meta::CPAN
TIFFReadRGBAImageOriented(TIFF* tif,
uint32 rwidth, uint32 rheight, uint32* raster,
int orientation, int stop)
{
char emsg[1024] = "";
TIFFRGBAImage img;
int ok;
if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg)) {
img.req_orientation = orientation;
/* XXX verify rwidth and rheight against width and height */
ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth,
rwidth, img.height);
TIFFRGBAImageEnd(&img);
} else {
TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
ok = 0;
}
return (ok);
}
src/Source/LibTIFF4/tif_ojpeg.c view on Meta::CPAN
/* What is what, and what is not?
This decoder starts with an input stream, that is essentially the JpegInterchangeFormat
stream, if any, followed by the strile data, if any. This stream is read in
OJPEGReadByte and related functions.
It analyzes the start of this stream, until it encounters non-marker data, i.e.
compressed image data. Some of the header markers it sees have no actual content,
like the SOI marker, and APP/COM markers that really shouldn't even be there. Some
other markers do have content, and the valuable bits and pieces of information
in these markers are saved, checking all to verify that the stream is more or
less within expected bounds. This happens inside the OJPEGReadHeaderInfoSecStreamXxx
functions.
Some OJPEG imagery contains no valid JPEG header markers. This situation is picked
up on if we've seen no SOF marker when we're at the start of the compressed image
data. In this case, the tables are read from JpegXxxTables tags, and the other
bits and pieces of information is initialized to its most basic value. This is
implemented in the OJPEGReadHeaderInfoSecTablesXxx functions.
When this is complete, a good and valid JPEG header can be assembled, and this is
src/Source/LibTIFF4/tif_write.c view on Meta::CPAN
if (tiles ^ isTiled(tif)) {
TIFFErrorExt(tif->tif_clientdata, module, tiles ?
"Can not write tiles to a stripped image" :
"Can not write scanlines to a tiled image");
return (0);
}
_TIFFFillStriles( tif );
/*
* On the first write verify all the required information
* has been setup and initialize any data structures that
* had to wait until directory information was set.
* Note that a lot of our work is assumed to remain valid
* because we disallow any of the important parameters
* from changing after we start writing (i.e. once
* TIFF_BEENWRITING is set, TIFFSetField will only allow
* the image's length to be changed).
*/
if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
TIFFErrorExt(tif->tif_clientdata, module,
src/Source/LibWebP/README view on Meta::CPAN
* 'm' controls the trade-off between encoding speed and quality. Default is 4.
You can try -m 5 or -m 6 to explore more (time-consuming) encoding
possibilities. A lower value will result in faster encoding at the expense
of quality.
Decoding tool:
==============
There is a decoding sample in examples/dwebp.c which will take
a .webp file and decode it to a PNG image file (amongst other formats).
This is simply to demonstrate the use of the API. You can verify the
file test.webp decodes to exactly the same as test_ref.ppm by using:
cd examples
./dwebp test.webp -ppm -o test.ppm
diff test.ppm test_ref.ppm
The full list of options is available using -h:
> dwebp -h
Usage: dwebp in_file [options] [-o out_file]
src/Source/LibWebP/src/dec/dec.idec.c view on Meta::CPAN
return ErrorStatusLossless(idec, dec->status_);
}
if (!VP8LDecodeHeader(dec, io)) {
if (dec->status_ == VP8_STATUS_BITSTREAM_ERROR &&
curr_size < idec->chunk_size_) {
dec->status_ = VP8_STATUS_SUSPENDED;
}
return ErrorStatusLossless(idec, dec->status_);
}
// Allocate/verify output buffer now.
dec->status_ = WebPAllocateDecBuffer(io->width, io->height, params->options,
output);
if (dec->status_ != VP8_STATUS_OK) {
return IDecError(idec, dec->status_);
}
idec->state_ = STATE_VP8L_DATA;
return VP8_STATUS_OK;
}
src/Source/LibWebP/src/dec/webpi.h view on Meta::CPAN
VP8Io* const io, WEBP_CSP_MODE src_colorspace);
//------------------------------------------------------------------------------
// Internal functions regarding WebPDecBuffer memory (in buffer.c).
// Don't really need to be externally visible for now.
// Prepare 'buffer' with the requested initial dimensions width/height.
// If no external storage is supplied, initializes buffer by allocating output
// memory and setting up the stride information. Validate the parameters. Return
// an error code in case of problem (no memory, or invalid stride / size /
// dimension / etc.). If *options is not NULL, also verify that the options'
// parameters are valid and apply them to the width/height dimensions of the
// output buffer. This takes cropping / scaling / rotation into account.
// Also incorporates the options->flip flag to flip the buffer parameters if
// needed.
VP8StatusCode WebPAllocateDecBuffer(int width, int height,
const WebPDecoderOptions* const options,
WebPDecBuffer* const buffer);
// Flip buffer vertically by negating the various strides.
VP8StatusCode WebPFlipBuffer(WebPDecBuffer* const buffer);
src/Source/LibWebP/src/enc/enc.picture_rescale.c view on Meta::CPAN
// Adjust top-left corner to chroma sample position.
static void SnapTopLeftPosition(const WebPPicture* const pic,
int* const left, int* const top) {
if (!pic->use_argb) {
*left &= ~1;
*top &= ~1;
}
}
// Adjust top-left corner and verify that the sub-rectangle is valid.
static int AdjustAndCheckRectangle(const WebPPicture* const pic,
int* const left, int* const top,
int width, int height) {
SnapTopLeftPosition(pic, left, top);
if ((*left) < 0 || (*top) < 0) return 0;
if (width <= 0 || height <= 0) return 0;
if ((*left) + width > pic->width) return 0;
if ((*top) + height > pic->height) return 0;
return 1;
}
src/Source/LibWebP/src/enc/enc.picture_rescale.c view on Meta::CPAN
return (picture->memory_argb_ == NULL);
}
return (picture->memory_ == NULL);
}
int WebPPictureView(const WebPPicture* src,
int left, int top, int width, int height,
WebPPicture* dst) {
if (src == NULL || dst == NULL) return 0;
// verify rectangle position.
if (!AdjustAndCheckRectangle(src, &left, &top, width, height)) return 0;
if (src != dst) { // beware of aliasing! We don't want to leak 'memory_'.
PictureGrabSpecs(src, dst);
}
dst->width = width;
dst->height = height;
if (!src->use_argb) {
dst->y = src->y + top * src->y_stride + left;
dst->u = src->u + (top >> 1) * src->uv_stride + (left >> 1);
src/Source/LibWebP/src/utils/utils.h view on Meta::CPAN
#ifdef __cplusplus
extern "C" {
#endif
//------------------------------------------------------------------------------
// Memory allocation
// This is the maximum memory amount that libwebp will ever try to allocate.
#define WEBP_MAX_ALLOCABLE_MEMORY (1ULL << 40)
// size-checking safe malloc/calloc: verify that the requested size is not too
// large, or return NULL. You don't need to call these for constructs like
// malloc(sizeof(foo)), but only if there's picture-dependent size involved
// somewhere (like: malloc(num_pixels * sizeof(*something))). That's why this
// safe malloc() borrows the signature from calloc(), pointing at the dangerous
// underlying multiply involved.
WEBP_EXTERN(void*) WebPSafeMalloc(uint64_t nmemb, size_t size);
// Note that WebPSafeCalloc() expects the second argument type to be 'size_t'
// in order to favor the "calloc(num_foo, sizeof(foo))" pattern.
WEBP_EXTERN(void*) WebPSafeCalloc(uint64_t nmemb, size_t size);
src/Source/Metadata/Exif.cpp view on Meta::CPAN
jpeg_read_exif_profile(FIBITMAP *dib, const BYTE *data, unsigned length) {
// marker identifying string for Exif = "Exif\0\0"
BYTE exif_signature[6] = { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
BYTE lsb_first[4] = { 0x49, 0x49, 0x2A, 0x00 }; // Classic TIFF signature - little-endian order
BYTE msb_first[4] = { 0x4D, 0x4D, 0x00, 0x2A }; // Classic TIFF signature - big-endian order
// profile size is up to 32-bit
DWORD dwProfileLength = (DWORD)length;
BYTE *pbProfile = (BYTE*)data;
// verify the identifying string
if(memcmp(exif_signature, pbProfile, sizeof(exif_signature)) == 0) {
// This is an Exif profile
// should contain a TIFF header with up to 2 IFDs (IFD stands for 'Image File Directory')
// 0th IFD : the image attributes, 1st IFD : may be used for thumbnail
pbProfile += sizeof(exif_signature);
dwProfileLength -= sizeof(exif_signature);
// read the TIFF header (8 bytes)
src/Source/Metadata/Exif.cpp view on Meta::CPAN
@param dib Input FIBITMAP
@param dataptr Pointer to the APP1 marker
@param datalen APP1 marker length
@return Returns TRUE if successful, FALSE otherwise
*/
BOOL
jpeg_read_exif_profile_raw(FIBITMAP *dib, const BYTE *profile, unsigned length) {
// marker identifying string for Exif = "Exif\0\0"
BYTE exif_signature[6] = { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
// verify the identifying string
if(memcmp(exif_signature, profile, sizeof(exif_signature)) != 0) {
// not an Exif profile
return FALSE;
}
// create a tag
FITAG *tag = FreeImage_CreateTag();
if(tag) {
FreeImage_SetTagKey(tag, g_TagLib_ExifRawFieldName);
FreeImage_SetTagLength(tag, (DWORD)length);
src/Source/OpenEXR/Copyrights/openexr/ChangeLog view on Meta::CPAN
values to the OpenEXRConfig.h header file, which is included
by any OpenEXR source files that need these macros. This
method of specifying HAVE_* macros guarantees that projects
will get the proper settings without needing to add compile-
time flags to accomodate OpenEXR. Note that this isn't
implemented properly for Windows yet.
(Drew Hess)
* Platform cleanups:
- No more support for IRIX or OSF1.
- No more explicit support for SunOS, because we have no way to
verify that it's working. I suspect that newish versions of
SunOS will just work out of the box, but let me know if not.
- No more PLATFORM_* macros (vestiges of the ILM internal build
system). PLATFORM_DARWIN_PPC is replaced by HAVE_DARWIN.
PLATFORM_REDHAT_IA32 (which was only used in IlmImfTest) is
replaced by HAVE_LINUX_PROCFS.
- OS X 10.4, which is the minimum version we're going to support
with this version, appears to have support for nrand48 and friends,
so no need to use the Imath-supplied version of them anymore.
(Drew Hess)
* No more PLATFORM_WINDOWS or PLATFORM_WIN32, replace with
src/Source/OpenEXR/IlmImf/ImfHeader.cpp view on Meta::CPAN
// so we can't limit the screen window width to a
// small range.
//
float screenWindowWidth = this->screenWindowWidth();
if (screenWindowWidth < 0)
throw IEX_NAMESPACE::ArgExc ("Invalid screen window width in image header.");
//
// If the file has multiple parts, verify that each header has attribute
// name and type.
// (TODO) We may want to check more stuff here.
//
if (isMultipartFile)
{
if (!hasName())
{
throw IEX_NAMESPACE::ArgExc ("Headers in a multipart file should"
" have name attribute.");
src/Source/OpenEXR/IlmImf/ImfHeader.cpp view on Meta::CPAN
if(part_type!="" && !isSupportedType(part_type))
{
//
// skip remaining sanity checks with unsupported types - they may not hold
//
return;
}
//
// If the file is tiled, verify that the tile description has reasonable
// values and check to see if the lineOrder is one of the predefined 3.
// If the file is not tiled, then the lineOrder can only be INCREASING_Y
// or DECREASING_Y.
//
LineOrder lineOrder = this->lineOrder();
if (isTiled)
{
if (!hasTileDescription())
src/Source/OpenEXR/IlmImf/ImfStandardAttributes.h view on Meta::CPAN
IMF_STD_ATTRIBUTE_DEF (worldToNDC, WorldToNDC, IMATH_NAMESPACE::M44f)
//
// deepImageState -- specifies whether the pixels in a deep image are
// sorted and non-overlapping.
//
// Note: this attribute can be set by application code that writes a file
// in order to tell applications that read the file whether the pixel data
// must be cleaned up prior to image processing operations such as flattening.
// The IlmImf library does not verify that the attribute is consistent with
// the actual state of the pixels. Application software may assume that the
// attribute is valid, as long as the software will not crash or lock up if
// any pixels are inconsistent with the deepImageState attribute.
//
IMF_STD_ATTRIBUTE_DEF (deepImageState, DeepImageState, DeepImageState)
//
// originalDataWindow -- if application software crops an image, then it
src/Source/OpenEXR/Imath/ImathEuler.h view on Meta::CPAN
enum Axis { X = 0, Y = 1, Z = 2 };
enum InputLayout { XYZLayout, IJKLayout };
//--------------------------------------------------------------------
// Constructors -- all default to ZYX non-relative ala softimage
// (where there is no argument to specify it)
//
// The Euler-from-matrix constructors assume that the matrix does
// not include shear or non-uniform scaling, but the constructors
// do not examine the matrix to verify this assumption. If necessary,
// you can adjust the matrix by calling the removeScalingAndShear()
// function, defined in ImathMatrixAlgo.h.
//--------------------------------------------------------------------
Euler();
Euler(const Euler&);
Euler(Order p);
Euler(const Vec3<T> &v, Order o = Default, InputLayout l = IJKLayout);
Euler(T i, T j, T k, Order o = Default, InputLayout l = IJKLayout);
Euler(const Euler<T> &euler, Order newp);
src/Source/OpenEXR/Imath/ImathEuler.h view on Meta::CPAN
bool firstRepeats);
//------------------------------------------------------------
// Conversions, toXYZVector() reorders the angles so that
// the X rotation comes first, followed by the Y and Z
// in cases like XYX ordering, the repeated angle will be
// in the "z" component
//
// The Euler-from-matrix extract() functions assume that the
// matrix does not include shear or non-uniform scaling, but
// the extract() functions do not examine the matrix to verify
// this assumption. If necessary, you can adjust the matrix
// by calling the removeScalingAndShear() function, defined
// in ImathMatrixAlgo.h.
//------------------------------------------------------------
void extract(const Matrix33<T>&);
void extract(const Matrix44<T>&);
void extract(const Quat<T>&);
Matrix33<T> toMatrix33() const;
src/Source/OpenEXR/Imath/ImathMatrixAlgo.h view on Meta::CPAN
// sansScalingAndShear (m) returns m
// removeScalingAndShear (m) returns false, m is unchanged
// extractAndRemoveScalingAndShear (m, s, h)
// returns false, m is unchanged,
// (sh) are invalid
// checkForZeroScaleInRow () returns false
// extractSHRT (m, s, h, r, t) returns false, (shrt) are invalid
//
// - Functions extractEuler(), extractEulerXYZ() and extractEulerZYX()
// assume that the matrix does not include shear or non-uniform scaling,
// but they do not examine the matrix to verify this assumption.
// Matrices with shear or non-uniform scaling are likely to produce
// meaningless results. Therefore, you should use the
// removeScalingAndShear() routine, if necessary, prior to calling
// extractEuler...() .
//
// - All functions assume that the matrix does not include perspective
// transformation(s), but they do not examine the matrix to verify
// this assumption. Matrices with perspective transformations are
// likely to produce meaningless results.
//
//----------------------------------------------------------------------
//
// Declarations for 4x4 matrix.
//
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