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slackbuilds/libraries/qt3/qt3-png15.patch

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$NetBSD: patch-as,v 1.5 2011/03/25 15:28:26 wiz Exp $
--- src/kernel/qpngio.cpp.orig 2007-02-02 10:01:15.000000000 -0400
+++ src/kernel/qpngio.cpp
@@ -43,6 +43,7 @@
#include "qiodevice.h"
#include <png.h>
+#include <zlib.h>
#ifdef Q_OS_TEMP
@@ -123,9 +124,24 @@ void setup_qt( QImage& image, png_struct
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
0, 0, 0);
+ png_colorp info_ptr_palette = NULL;
+ int info_ptr_num_palette = 0;
+ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)) {
+ png_get_PLTE(png_ptr, info_ptr, &info_ptr_palette, &info_ptr_num_palette);
+ }
+
+ png_bytep info_ptr_trans_alpha = NULL;
+ int info_ptr_num_trans = 0;
+ png_color_16p info_ptr_trans_color = NULL;
+
+ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
+ png_get_tRNS(png_ptr, info_ptr, &info_ptr_trans_alpha, &info_ptr_num_trans, &info_ptr_trans_color);
+ }
+
+
if ( color_type == PNG_COLOR_TYPE_GRAY ) {
// Black & White or 8-bit grayscale
- if ( bit_depth == 1 && info_ptr->channels == 1 ) {
+ if ( bit_depth == 1 && png_get_channels(png_ptr, info_ptr) == 1 ) {
png_set_invert_mono( png_ptr );
png_read_update_info( png_ptr, info_ptr );
if (!image.create( width, height, 1, 2, QImage::BigEndian ))
@@ -159,7 +175,7 @@ void setup_qt( QImage& image, png_struct
image.setColor( i, qRgba(c,c,c,0xff) );
}
if ( png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ) {
- const int g = info_ptr->trans_values.gray;
+ const int g = info_ptr_trans_color->gray;
if (g < ncols) {
image.setAlphaBuffer(TRUE);
image.setColor(g, image.color(g) & RGB_MASK);
@@ -168,7 +184,7 @@ void setup_qt( QImage& image, png_struct
}
} else if ( color_type == PNG_COLOR_TYPE_PALETTE
&& png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)
- && info_ptr->num_palette <= 256 )
+ && info_ptr_num_palette <= 256 )
{
// 1-bit and 8-bit color
if ( bit_depth != 1 )
@@ -176,28 +192,28 @@ void setup_qt( QImage& image, png_struct
png_read_update_info( png_ptr, info_ptr );
png_get_IHDR(png_ptr, info_ptr,
&width, &height, &bit_depth, &color_type, 0, 0, 0);
- if (!image.create(width, height, bit_depth, info_ptr->num_palette,
+ if (!image.create(width, height, bit_depth, info_ptr_num_palette,
QImage::BigEndian))
return;
int i = 0;
if ( png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ) {
image.setAlphaBuffer( TRUE );
- while ( i < info_ptr->num_trans ) {
+ while ( i < info_ptr_num_trans ) {
image.setColor(i, qRgba(
- info_ptr->palette[i].red,
- info_ptr->palette[i].green,
- info_ptr->palette[i].blue,
- info_ptr->trans[i]
+ info_ptr_palette[i].red,
+ info_ptr_palette[i].green,
+ info_ptr_palette[i].blue,
+ info_ptr_trans_alpha[i]
)
);
i++;
}
}
- while ( i < info_ptr->num_palette ) {
+ while ( i < info_ptr_num_palette ) {
image.setColor(i, qRgba(
- info_ptr->palette[i].red,
- info_ptr->palette[i].green,
- info_ptr->palette[i].blue,
+ info_ptr_palette[i].red,
+ info_ptr_palette[i].green,
+ info_ptr_palette[i].blue,
0xff
)
);
@@ -284,7 +300,7 @@ void read_png_image(QImageIO* iio)
return;
}
- if (setjmp(png_ptr->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
iio->setStatus(-4);
return;
@@ -469,7 +485,7 @@ bool QPNGImageWriter::writeImage(const Q
return FALSE;
}
- if (setjmp(png_ptr->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct(&png_ptr, &info_ptr);
return FALSE;
}
@@ -491,10 +507,16 @@ bool QPNGImageWriter::writeImage(const Q
png_set_write_fn(png_ptr, (void*)this, qpiw_write_fn, qpiw_flush_fn);
+#warning XXXtnn not too sure about this
+/*
+according to png.h, channels is only used on read, not writes, so we
+should be able to comment this out.
+
info_ptr->channels =
(image.depth() == 32)
? (image.hasAlphaBuffer() ? 4 : 3)
: 1;
+*/
png_set_IHDR(png_ptr, info_ptr, image.width(), image.height(),
image.depth() == 1 ? 1 : 8 /* per channel */,
@@ -504,11 +526,12 @@ bool QPNGImageWriter::writeImage(const Q
: PNG_COLOR_TYPE_RGB
: PNG_COLOR_TYPE_PALETTE, 0, 0, 0);
+ png_color_8 sig_bit;
+ sig_bit.red = 8;
+ sig_bit.green = 8;
+ sig_bit.blue = 8;
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
- //png_set_sBIT(png_ptr, info_ptr, 8);
- info_ptr->sig_bit.red = 8;
- info_ptr->sig_bit.green = 8;
- info_ptr->sig_bit.blue = 8;
if (image.depth() == 1 && image.bitOrder() == QImage::LittleEndian)
png_set_packswap(png_ptr);
@@ -522,11 +545,14 @@ bool QPNGImageWriter::writeImage(const Q
png_set_PLTE(png_ptr, info_ptr, palette, num_palette);
int* trans = new int[num_palette];
int num_trans = 0;
+ png_colorp info_ptr_palette = NULL;
+ int tmp;
+ png_get_PLTE(png_ptr, info_ptr, &info_ptr_palette, &tmp);
for (int i=0; i<num_palette; i++) {
QRgb rgb=image.color(i);
- info_ptr->palette[i].red = qRed(rgb);
- info_ptr->palette[i].green = qGreen(rgb);
- info_ptr->palette[i].blue = qBlue(rgb);
+ info_ptr_palette[i].red = qRed(rgb);
+ info_ptr_palette[i].green = qGreen(rgb);
+ info_ptr_palette[i].blue = qBlue(rgb);
if (image.hasAlphaBuffer()) {
trans[i] = rgb >> 24;
if (trans[i] < 255) {
@@ -534,6 +560,7 @@ bool QPNGImageWriter::writeImage(const Q
}
}
}
+ png_set_PLTE(png_ptr, info_ptr, info_ptr_palette, num_palette);
if (num_trans) {
copy_trans = new png_byte[num_trans];
for (int i=0; i<num_trans; i++)
@@ -544,7 +571,10 @@ bool QPNGImageWriter::writeImage(const Q
}
if ( image.hasAlphaBuffer() ) {
- info_ptr->sig_bit.alpha = 8;
+ png_color_8p sig_bit;
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+ sig_bit->alpha = 8;
+ png_set_sBIT(png_ptr, info_ptr, sig_bit);
}
// Swap ARGB to RGBA (normal PNG format) before saving on
@@ -1030,7 +1060,7 @@ int QPNGFormat::decode(QImage& img, QIma
return -1;
}
- if (setjmp((png_ptr)->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, 0);
image = 0;
return -1;
@@ -1057,7 +1087,7 @@ int QPNGFormat::decode(QImage& img, QIma
if ( !png_ptr ) return 0;
- if (setjmp(png_ptr->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, 0);
image = 0;
state = MovieStart;
@@ -1117,7 +1147,7 @@ void QPNGFormat::end(png_structp png, pn
consumer->frameDone(QPoint(offx,offy),r);
consumer->end();
state = FrameStart;
- unused_data = (int)png->buffer_size; // Since libpng doesn't tell us
+ unused_data = png_process_data_pause(png, 0);
}
#ifdef PNG_USER_CHUNKS_SUPPORTED
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