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changed TiffDetails to a class so that clean up would be easier and added logic to handle palette images (though they will not open yet)

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3089 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Matthew Wilber 2003-04-21 03:41:33 +00:00
parent 5cd3d8f8e3
commit 91ae8a2423
1 changed files with 72 additions and 41 deletions
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111
src/add-ons/translators/tifftranslator/TIFFTranslator.cpp
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@ -108,6 +108,19 @@ make_nth_translator(int32 n, image_id you, uint32 flags, ...)
return NULL;
}
TiffDetails::TiffDetails()
{
memset(this, 0, sizeof(TiffDetails));
}
TiffDetails::~TiffDetails()
{
delete[] pstripOffsets;
delete[] pstripByteCounts;
memset(this, 0, sizeof(TiffDetails));
}
// ---------------------------------------------------------------
// Constructor
//
@ -367,9 +380,6 @@ identify_bits_header(BPositionIO *inSource, translator_info *outInfo,
status_t
check_tiff_fields(TiffIfd &ifd, TiffDetails *pdetails)
{
TiffDetails dtls;
memset(&dtls, 0, sizeof(TiffDetails));
try {
// Extra Samples are not yet supported
if (ifd.HasField(TAG_EXTRA_SAMPLES))
@ -396,22 +406,22 @@ check_tiff_fields(TiffIfd &ifd, TiffDetails *pdetails)
return B_NO_TRANSLATOR;
// Copy fields useful to TIFFTranslator
dtls.width = ifd.GetUint(TAG_IMAGE_WIDTH);
dtls.height = ifd.GetUint(TAG_IMAGE_HEIGHT);
dtls.interpretation = ifd.GetUint(TAG_PHOTO_INTERPRETATION);
uint32 width = ifd.GetUint(TAG_IMAGE_WIDTH);
uint32 height = ifd.GetUint(TAG_IMAGE_HEIGHT);
uint16 interpretation = ifd.GetUint(TAG_PHOTO_INTERPRETATION);
uint32 compression;
if (!ifd.HasField(TAG_COMPRESSION))
dtls.compression = COMPRESSION_NONE;
compression = COMPRESSION_NONE;
else
dtls.compression = ifd.GetUint(TAG_COMPRESSION);
if (dtls.compression != COMPRESSION_NONE &&
dtls.compression != COMPRESSION_HUFFMAN &&
dtls.compression != COMPRESSION_PACKBITS)
compression = ifd.GetUint(TAG_COMPRESSION);
if (compression != COMPRESSION_NONE &&
compression != COMPRESSION_HUFFMAN &&
compression != COMPRESSION_PACKBITS)
return B_NO_TRANSLATOR;
// Currently, only some
// bilevel, RGB or CMYK images are supported
switch (dtls.interpretation) {
uint16 imageType;
switch (interpretation) {
// Bilevel images
case PHOTO_WHITEZERO:
case PHOTO_BLACKZERO:
@ -424,7 +434,34 @@ check_tiff_fields(TiffIfd &ifd, TiffDetails *pdetails)
ifd.GetUint(TAG_BITS_PER_SAMPLE) != 1)
return B_NO_TRANSLATOR;
dtls.imageType = TIFF_BILEVEL;
imageType = TIFF_BILEVEL;
break;
// Palette color images
case PHOTO_PALETTE:
// default value for samples per pixel is 1
// if samples per pixel is other than 1,
// it is not valid for this image type
if (ifd.HasField(TAG_SAMPLES_PER_PIXEL) &&
ifd.GetUint(TAG_SAMPLES_PER_PIXEL) != 1)
return B_NO_TRANSLATOR;
// bits per sample must be present and
// can only be 4 or 8
if (ifd.GetUint(TAG_BITS_PER_SAMPLE) != 4 &&
ifd.GetUint(TAG_BITS_PER_SAMPLE) != 8)
return B_NO_TRANSLATOR;
// even though other compression types are
// supported for other TIFF types,
// packbits and uncompressed are the only
// compression types supported for palette
// images
if (compression != COMPRESSION_NONE &&
compression != COMPRESSION_PACKBITS)
return B_NO_TRANSLATOR;
imageType = TIFF_PALETTE;
break;
case PHOTO_RGB:
@ -436,7 +473,7 @@ check_tiff_fields(TiffIfd &ifd, TiffDetails *pdetails)
ifd.GetUint(TAG_BITS_PER_SAMPLE, 3) != 8)
return B_NO_TRANSLATOR;
dtls.imageType = TIFF_RGB;
imageType = TIFF_RGB;
break;
case PHOTO_SEPARATED:
@ -455,46 +492,45 @@ check_tiff_fields(TiffIfd &ifd, TiffDetails *pdetails)
ifd.GetUint(TAG_BITS_PER_SAMPLE, 4) != 8)
return B_NO_TRANSLATOR;
dtls.imageType = TIFF_CMYK;
imageType = TIFF_CMYK;
break;
default:
return B_NO_TRANSLATOR;
}
uint32 rowsPerStrip, stripsPerImage;
if (!ifd.HasField(TAG_ROWS_PER_STRIP))
dtls.rowsPerStrip = DEFAULT_ROWS_PER_STRIP;
rowsPerStrip = DEFAULT_ROWS_PER_STRIP;
else
dtls.rowsPerStrip = ifd.GetUint(TAG_ROWS_PER_STRIP);
dtls.stripsPerImage =
(dtls.height + dtls.rowsPerStrip - 1) / dtls.rowsPerStrip;
rowsPerStrip = ifd.GetUint(TAG_ROWS_PER_STRIP);
stripsPerImage = (height + rowsPerStrip - 1) / rowsPerStrip;
if (ifd.GetCount(TAG_STRIP_OFFSETS) != dtls.stripsPerImage ||
ifd.GetCount(TAG_STRIP_BYTE_COUNTS) != dtls.stripsPerImage)
if (ifd.GetCount(TAG_STRIP_OFFSETS) != stripsPerImage ||
ifd.GetCount(TAG_STRIP_BYTE_COUNTS) != stripsPerImage)
return B_NO_TRANSLATOR;
printf("width: %d\nheight: %d\ncompression: %d\ninterpretation: %d\n",
dtls.width, dtls.height, dtls.compression,
dtls.interpretation);
width, height, compression, interpretation);
// return read in details if output
// pointer is supplied
// return read in details if output pointer is supplied
if (pdetails) {
ifd.GetUintArray(TAG_STRIP_OFFSETS, &dtls.pstripOffsets);
ifd.GetUintArray(TAG_STRIP_BYTE_COUNTS, &dtls.pstripByteCounts);
pdetails->width = width;
pdetails->height = height;
pdetails->compression = compression;
pdetails->rowsPerStrip = rowsPerStrip;
pdetails->stripsPerImage = stripsPerImage;
pdetails->interpretation = interpretation;
pdetails->imageType = imageType;
memcpy(pdetails, &dtls, sizeof(TiffDetails));
ifd.GetUintArray(TAG_STRIP_OFFSETS, &pdetails->pstripOffsets);
ifd.GetUintArray(TAG_STRIP_BYTE_COUNTS, &pdetails->pstripByteCounts);
}
} catch (TiffIfdException) {
printf("-- Caught TiffIfdException --\n");
delete[] dtls.pstripOffsets;
dtls.pstripOffsets = NULL;
delete[] dtls.pstripByteCounts;
dtls.pstripByteCounts = NULL;
return B_NO_TRANSLATOR;
}
@ -969,11 +1005,6 @@ TIFFTranslator::translate_from_tiff(BPositionIO *inSource, ssize_t amtread,
delete[] outbuffer;
outbuffer = NULL;
delete[] details.pstripOffsets;
details.pstripOffsets = NULL;
delete[] details.pstripByteCounts;
details.pstripByteCounts = NULL;
return B_OK;
} else