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|
$NetBSD: patch-utils_TkCximage_src_CxImage_ximapng.cpp,v 1.4 2011/08/04 23:58:36 wiz Exp $
Fix build with png-1.5.
https://sourceforge.net/tracker/?func=detail&aid=3386428&group_id=54091&atid=472655
--- utils/TkCximage/src/CxImage/ximapng.cpp.orig 2010-01-29 09:09:27.000000000 +0000
+++ utils/TkCximage/src/CxImage/ximapng.cpp
@@ -15,7 +15,7 @@
void CxImagePNG::ima_png_error(png_struct *png_ptr, char *message)
{
strcpy(info.szLastError,message);
- longjmp(png_ptr->jmpbuf, 1);
+ longjmp(png_jmpbuf(png_ptr), 1);
}
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_DECODE
@@ -62,7 +62,7 @@ bool CxImagePNG::Decode(CxFile *hFile)
/* Set error handling if you are using the setjmp/longjmp method (this is
* the normal method of doing things with libpng). REQUIRED unless you
* set up your own error handlers in the png_create_read_struct() earlier. */
- if (setjmp(png_ptr->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
/* Free all of the memory associated with the png_ptr and info_ptr */
delete [] row_pointers;
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
@@ -77,15 +77,15 @@ bool CxImagePNG::Decode(CxFile *hFile)
png_read_info(png_ptr, info_ptr);
if (info.nEscape == -1){
- head.biWidth = info_ptr->width;
- head.biHeight= info_ptr->height;
+ head.biWidth = png_get_image_width(png_ptr, info_ptr);
+ head.biHeight= png_get_image_height(png_ptr, info_ptr);
info.dwType = CXIMAGE_FORMAT_PNG;
- longjmp(png_ptr->jmpbuf, 1);
+ longjmp(png_jmpbuf(png_ptr), 1);
}
/* calculate new number of channels */
int channels=0;
- switch(info_ptr->color_type){
+ switch(png_get_color_type(png_ptr, info_ptr)){
case PNG_COLOR_TYPE_GRAY:
case PNG_COLOR_TYPE_PALETTE:
channels = 1;
@@ -101,71 +101,76 @@ bool CxImagePNG::Decode(CxFile *hFile)
break;
default:
strcpy(info.szLastError,"unknown PNG color type");
- longjmp(png_ptr->jmpbuf, 1);
+ longjmp(png_jmpbuf(png_ptr), 1);
}
//find the right pixel depth used for cximage
- int pixel_depth = info_ptr->pixel_depth;
+#if MIGHT_BE_BUGGY
+ int pixel_depth = png_get_pixel_depth(png_ptr, info_ptr);
if (channels == 1 && pixel_depth>8) pixel_depth=8;
+#endif
+ int pixel_depth;
+ if (channels == 1) pixel_depth=8;
if (channels == 2) pixel_depth=8;
if (channels >= 3) pixel_depth=24;
- if (!Create(info_ptr->width, info_ptr->height, pixel_depth, CXIMAGE_FORMAT_PNG)){
- longjmp(png_ptr->jmpbuf, 1);
+ if (!Create(png_get_image_width(png_ptr, info_ptr), png_get_image_height(png_ptr, info_ptr), pixel_depth, CXIMAGE_FORMAT_PNG)){
+ longjmp(png_jmpbuf(png_ptr), 1);
}
/* get metrics */
- switch (info_ptr->phys_unit_type)
+ png_uint_32 res_x, res_y;
+ int unit_type;
+ png_get_pHYs_dpi(png_ptr, info_ptr, &res_x, &res_y, &unit_type);
+ switch (unit_type)
{
case PNG_RESOLUTION_UNKNOWN:
- SetXDPI(info_ptr->x_pixels_per_unit);
- SetYDPI(info_ptr->y_pixels_per_unit);
+ SetXDPI(res_x);
+ SetYDPI(res_y);
break;
case PNG_RESOLUTION_METER:
- SetXDPI((long)floor(info_ptr->x_pixels_per_unit * 254.0 / 10000.0 + 0.5));
- SetYDPI((long)floor(info_ptr->y_pixels_per_unit * 254.0 / 10000.0 + 0.5));
+ SetXDPI((long)floor(res_x * 254.0 / 10000.0 + 0.5));
+ SetYDPI((long)floor(res_y * 254.0 / 10000.0 + 0.5));
break;
}
- if (info_ptr->num_palette>0){
- SetPalette((rgb_color*)info_ptr->palette,info_ptr->num_palette);
- SetClrImportant(info_ptr->num_palette);
- } else if (info_ptr->bit_depth ==2) { //<DP> needed for 2 bpp grayscale PNGs
+ png_colorp palette;
+ int num_palette;
+ png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);
+ if (num_palette>0){
+ SetPalette((rgb_color*)palette,num_palette);
+ SetClrImportant(num_palette);
+ } else if (png_get_bit_depth(png_ptr, info_ptr) ==2) { //<DP> needed for 2 bpp grayscale PNGs
SetPaletteColor(0,0,0,0);
SetPaletteColor(1,85,85,85);
SetPaletteColor(2,170,170,170);
SetPaletteColor(3,255,255,255);
} else SetGrayPalette(); //<DP> needed for grayscale PNGs
- int nshift = max(0,(info_ptr->bit_depth>>3)-1)<<3;
+ int nshift = max(0,(png_get_bit_depth(png_ptr, info_ptr)>>3)-1)<<3;
- if (info_ptr->num_trans!=0){ //palette transparency
- if (info_ptr->num_trans==1){
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE){
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- info.nBkgndIndex = info_ptr->trans_color.index;
-#else
- info.nBkgndIndex = info_ptr->trans_values.index;
-#endif
+png_uint_32 png_get_tRNS (png_const_structp png_ptr, png_infop
+info_ptr, png_bytep *trans_alpha, int *num_trans, png_color_16p
+*trans_color);
+ png_bytep trans_alpha;
+ int num_trans;
+ png_color_16p trans_color;
+ png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color);
+ if (num_trans!=0){ //palette transparency
+ if (num_trans==1){
+ if (png_get_color_type(png_ptr, info_ptr) == PNG_COLOR_TYPE_PALETTE){
+ info.nBkgndIndex = trans_color->index;
} else{
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- info.nBkgndIndex = info_ptr->trans_color.gray>>nshift;
-#else
- info.nBkgndIndex = info_ptr->trans_values.gray>>nshift;
-#endif
+ info.nBkgndIndex = trans_color->gray>>nshift;
}
}
- if (info_ptr->num_trans>1){
+ if (num_trans>1){
RGBQUAD* pal=GetPalette();
if (pal){
DWORD ip;
- for (ip=0;ip<min(head.biClrUsed,(unsigned long)info_ptr->num_trans);ip++)
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- pal[ip].rgbReserved=info_ptr->trans_alpha[ip];
-#else
- pal[ip].rgbReserved=info_ptr->trans[ip];
-#endif
- for (ip=info_ptr->num_trans;ip<head.biClrUsed;ip++){
+ for (ip=0;ip<min(head.biClrUsed,(unsigned long)num_trans);ip++)
+ pal[ip].rgbReserved=trans_alpha[ip];
+ for (ip=num_trans;ip<head.biClrUsed;ip++){
pal[ip].rgbReserved=255;
}
info.bAlphaPaletteEnabled=true;
@@ -178,15 +183,9 @@ bool CxImagePNG::Decode(CxFile *hFile)
int num_trans;
png_color_16 *image_background;
if (png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, &image_background)){
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- info.nBkgndColor.rgbRed = (BYTE)(info_ptr->trans_color.red>>nshift);
- info.nBkgndColor.rgbGreen = (BYTE)(info_ptr->trans_color.green>>nshift);
- info.nBkgndColor.rgbBlue = (BYTE)(info_ptr->trans_color.blue>>nshift);
-#else
- info.nBkgndColor.rgbRed = (BYTE)(info_ptr->trans_values.red>>nshift);
- info.nBkgndColor.rgbGreen = (BYTE)(info_ptr->trans_values.green>>nshift);
- info.nBkgndColor.rgbBlue = (BYTE)(info_ptr->trans_values.blue>>nshift);
-#endif
+ info.nBkgndColor.rgbRed = (BYTE)(trans_color->red>>nshift);
+ info.nBkgndColor.rgbGreen = (BYTE)(trans_color->green>>nshift);
+ info.nBkgndColor.rgbBlue = (BYTE)(trans_color->blue>>nshift);
info.nBkgndColor.rgbReserved = 0;
info.nBkgndIndex = 0;
}
@@ -202,15 +201,15 @@ bool CxImagePNG::Decode(CxFile *hFile)
}
// <vho> - flip the RGB pixels to BGR (or RGBA to BGRA)
- if (info_ptr->color_type & PNG_COLOR_MASK_COLOR){
+ if (png_get_color_type(png_ptr, info_ptr) & PNG_COLOR_MASK_COLOR){
png_set_bgr(png_ptr);
}
// <vho> - handle cancel
- if (info.nEscape) longjmp(png_ptr->jmpbuf, 1);
+ if (info.nEscape) longjmp(png_jmpbuf(png_ptr), 1);
// row_bytes is the width x number of channels x (bit-depth / 8)
- row_pointers = new BYTE[info_ptr->rowbytes + 8];
+ row_pointers = new BYTE[png_get_rowbytes(png_ptr, info_ptr) + 8];
// turn on interlace handling
int number_passes = png_set_interlace_handling(png_ptr);
@@ -221,8 +220,10 @@ bool CxImagePNG::Decode(CxFile *hFile)
SetCodecOption(0);
}
- int chan_offset = info_ptr->bit_depth >> 3;
- int pixel_offset = info_ptr->pixel_depth >> 3;
+ int bit_depth = png_get_bit_depth(png_ptr, info_ptr);
+ int chan_offset = bit_depth >> 3;
+ //int pixel_offset = info_ptr->pixel_depth >> 3;
+ int pixel_offset = (bit_depth * channels) >> 3;
for (int pass=0; pass < number_passes; pass++) {
iter.Upset();
@@ -230,7 +231,7 @@ bool CxImagePNG::Decode(CxFile *hFile)
do {
// <vho> - handle cancel
- if (info.nEscape) longjmp(png_ptr->jmpbuf, 1);
+ if (info.nEscape) longjmp(png_jmpbuf(png_ptr), 1);
#if CXIMAGE_SUPPORT_ALPHA // <vho>
if (AlphaIsValid()) {
@@ -241,7 +242,7 @@ bool CxImagePNG::Decode(CxFile *hFile)
BYTE* prow= iter.GetRow(ay);
//recover data from previous scan
- if (info_ptr->interlace_type && pass>0 && pass!=7){
+ if (png_get_interlace_type(png_ptr, info_ptr) && pass>0 && pass!=7){
for(ax=0;ax<head.biWidth;ax++){
long px = ax * pixel_offset;
if (channels == 2){
@@ -278,10 +279,10 @@ bool CxImagePNG::Decode(CxFile *hFile)
#endif // CXIMAGE_SUPPORT_ALPHA // vho
{
//recover data from previous scan
- if (info_ptr->interlace_type && pass>0){
- iter.GetRow(row_pointers, info_ptr->rowbytes);
+ if (png_get_interlace_type(png_ptr, info_ptr) && pass>0){
+ iter.GetRow(row_pointers, png_get_rowbytes(png_ptr, info_ptr));
//re-expand buffer for images with bit depth > 8
- if (info_ptr->bit_depth > 8){
+ if (png_get_bit_depth(png_ptr, info_ptr) > 8){
for(long ax=(head.biWidth*channels-1);ax>=0;ax--)
row_pointers[ax*chan_offset] = row_pointers[ax];
}
@@ -291,15 +292,15 @@ bool CxImagePNG::Decode(CxFile *hFile)
png_read_row(png_ptr, row_pointers, NULL);
//shrink 16 bit depth images down to 8 bits
- if (info_ptr->bit_depth > 8){
+ if (png_get_bit_depth(png_ptr, info_ptr) > 8){
for(long ax=0;ax<(head.biWidth*channels);ax++)
row_pointers[ax] = row_pointers[ax*chan_offset];
}
//copy the pixels
- iter.SetRow(row_pointers, info_ptr->rowbytes);
+ iter.SetRow(row_pointers, png_get_rowbytes(png_ptr, info_ptr));
//<DP> expand 2 bpp images only in the last pass
- if (info_ptr->bit_depth==2 && pass==(number_passes-1))
+ if (png_get_bit_depth(png_ptr, info_ptr)==2 && pass==(number_passes-1))
expand2to4bpp(iter.GetRow());
//go on
@@ -340,6 +341,11 @@ bool CxImagePNG::Encode(CxFile *hFile)
BYTE trans[256]; //for transparency (don't move)
png_struct *png_ptr;
png_info *info_ptr;
+ png_uint_32 width, height;
+ png_byte bit_depth;
+ png_byte color_type;
+ png_byte interlace_type;
+ BYTE channels;
cx_try
{
@@ -362,9 +368,8 @@ bool CxImagePNG::Encode(CxFile *hFile)
/* Set error handling. REQUIRED if you aren't supplying your own
* error hadnling functions in the png_create_write_struct() call.
*/
- if (setjmp(png_ptr->jmpbuf)){
+ if (setjmp(png_jmpbuf(png_ptr))){
/* If we get here, we had a problem reading the file */
- if (info_ptr->palette) free(info_ptr->palette);
png_destroy_write_struct(&png_ptr, (png_infopp)&info_ptr);
cx_throw("Error saving PNG file");
}
@@ -376,20 +381,18 @@ bool CxImagePNG::Encode(CxFile *hFile)
png_set_write_fn(png_ptr,hFile,/*(png_rw_ptr)*/user_write_data,/*(png_flush_ptr)*/user_flush_data);
/* set the file information here */
- info_ptr->width = GetWidth();
- info_ptr->height = GetHeight();
- info_ptr->pixel_depth = (BYTE)GetBpp();
- info_ptr->channels = (GetBpp()>8) ? (BYTE)3: (BYTE)1;
- info_ptr->bit_depth = (BYTE)(GetBpp()/info_ptr->channels);
- info_ptr->compression_type = info_ptr->filter_type = 0;
- info_ptr->valid = 0;
+ width = GetWidth();
+ height = GetHeight();
+ //pixel_depth = (BYTE)GetBpp();
+ channels = (GetBpp()>8) ? (BYTE)3: (BYTE)1;
+ bit_depth = (BYTE)(GetBpp()/channels);
switch(GetCodecOption(CXIMAGE_FORMAT_PNG)){
case 1:
- info_ptr->interlace_type = PNG_INTERLACE_ADAM7;
+ interlace_type = PNG_INTERLACE_ADAM7;
break;
default:
- info_ptr->interlace_type = PNG_INTERLACE_NONE;
+ interlace_type = PNG_INTERLACE_NONE;
}
/* set compression level */
@@ -399,19 +402,19 @@ bool CxImagePNG::Encode(CxFile *hFile)
if (GetNumColors()){
if (bGrayScale){
- info_ptr->color_type = PNG_COLOR_TYPE_GRAY;
+ color_type = PNG_COLOR_TYPE_GRAY;
} else {
- info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
+ color_type = PNG_COLOR_TYPE_PALETTE;
}
} else {
- info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+ color_type = PNG_COLOR_TYPE_RGB;
}
#if CXIMAGE_SUPPORT_ALPHA
if (AlphaIsValid()){
- info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
- info_ptr->channels++;
- info_ptr->bit_depth = 8;
- info_ptr->pixel_depth += 8;
+ color_type |= PNG_COLOR_MASK_ALPHA;
+ channels++;
+ bit_depth = 8;
+ //pixel_depth += 8;
}
#endif
@@ -428,29 +431,21 @@ bool CxImagePNG::Encode(CxFile *hFile)
/* set metrics */
png_set_pHYs(png_ptr, info_ptr, head.biXPelsPerMeter, head.biYPelsPerMeter, PNG_RESOLUTION_METER);
- png_set_IHDR(png_ptr, info_ptr, info_ptr->width, info_ptr->height, info_ptr->bit_depth,
- info_ptr->color_type, info_ptr->interlace_type,
+ png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
+ color_type, interlace_type,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
//<DP> simple transparency
if (info.nBkgndIndex >= 0){
- info_ptr->num_trans = 1;
- info_ptr->valid |= PNG_INFO_tRNS;
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- info_ptr->trans_alpha = trans;
- info_ptr->trans_color.index = (BYTE)info.nBkgndIndex;
- info_ptr->trans_color.red = tc.rgbRed;
- info_ptr->trans_color.green = tc.rgbGreen;
- info_ptr->trans_color.blue = tc.rgbBlue;
- info_ptr->trans_color.gray = info_ptr->trans_color.index;
-#else
- info_ptr->trans = trans;
- info_ptr->trans_values.index = (BYTE)info.nBkgndIndex;
- info_ptr->trans_values.red = tc.rgbRed;
- info_ptr->trans_values.green = tc.rgbGreen;
- info_ptr->trans_values.blue = tc.rgbBlue;
- info_ptr->trans_values.gray = info_ptr->trans_values.index;
-#endif
+ png_color_16 trans_color;
+
+ trans_color.index = (BYTE)info.nBkgndIndex;
+ trans_color.red = tc.rgbRed;
+ trans_color.green = tc.rgbGreen;
+ trans_color.blue = tc.rgbBlue;
+ trans_color.gray = (BYTE)info.nBkgndIndex;
+
+ png_set_tRNS(png_ptr, info_ptr, trans, 1, &trans_color);
// the transparency indexes start from 0 for non grayscale palette
if (!bGrayScale && head.biClrUsed && info.nBkgndIndex)
@@ -459,30 +454,27 @@ bool CxImagePNG::Encode(CxFile *hFile)
/* set the palette if there is one */
if (GetPalette()){
- if (!bGrayScale){
- info_ptr->valid |= PNG_INFO_PLTE;
- }
-
int nc = GetClrImportant();
if (nc==0) nc = GetNumColors();
if (info.bAlphaPaletteEnabled){
for(WORD ip=0; ip<nc;ip++)
trans[ip]=GetPaletteColor((BYTE)ip).rgbReserved;
- info_ptr->num_trans = (WORD)nc;
- info_ptr->valid |= PNG_INFO_tRNS;
-#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
- info_ptr->trans_alpha = trans;
-#else
- info_ptr->trans = trans;
-#endif
+ png_set_tRNS(png_ptr, info_ptr, trans, (WORD)nc, NULL);
}
// copy the palette colors
- info_ptr->palette = new png_color[nc];
- info_ptr->num_palette = (png_uint_16) nc;
- for (int i=0; i<nc; i++)
- GetPaletteColor(i, &info_ptr->palette[i].red, &info_ptr->palette[i].green, &info_ptr->palette[i].blue);
+ if (!bGrayScale) {
+ png_color *palette;
+
+ palette = (png_color *)png_malloc(png_ptr, nc*sizeof(palette[0]));
+ for (int i=0; i<nc; i++)
+ GetPaletteColor(i, &palette[i].red, &palette[i].green, &palette[i].blue);
+ png_set_PLTE(png_ptr, info_ptr, palette, nc);
+ png_data_freer(png_ptr, info_ptr,
+ PNG_DESTROY_WILL_FREE_DATA,
+ PNG_FREE_PLTE);
+ }
}
#if CXIMAGE_SUPPORT_ALPHA // <vho>
@@ -496,8 +488,8 @@ bool CxImagePNG::Encode(CxFile *hFile)
} } }
#endif // CXIMAGE_SUPPORT_ALPHA // <vho>
- int row_size = max(info.dwEffWidth, info_ptr->width*info_ptr->channels*(info_ptr->bit_depth/8));
- info_ptr->rowbytes = row_size;
+ int row_size = max(info.dwEffWidth, png_get_rowbytes(png_ptr, info_ptr));
+ //info_ptr->rowbytes = row_size;
BYTE *row_pointers = new BYTE[row_size];
/* write the file information */
@@ -515,7 +507,7 @@ bool CxImagePNG::Encode(CxFile *hFile)
if (AlphaIsValid()){
for (long ax=head.biWidth-1; ax>=0;ax--){
c = BlindGetPixelColor(ax,ay);
- int px = ax * info_ptr->channels;
+ int px = ax * png_get_channels(png_ptr, info_ptr);
if (!bGrayScale){
row_pointers[px++]=c.rgbRed;
row_pointers[px++]=c.rgbGreen;
@@ -530,7 +522,7 @@ bool CxImagePNG::Encode(CxFile *hFile)
#endif //CXIMAGE_SUPPORT_ALPHA // <vho>
{
iter.GetRow(row_pointers, row_size);
- if (info_ptr->color_type == PNG_COLOR_TYPE_RGB) //HACK BY OP
+ if (png_get_color_type(png_ptr, info_ptr) == PNG_COLOR_TYPE_RGB) //HACK BY OP
RGBtoBGR(row_pointers, row_size);
png_write_row(png_ptr, row_pointers);
}
@@ -547,12 +539,6 @@ bool CxImagePNG::Encode(CxFile *hFile)
/* It is REQUIRED to call this to finish writing the rest of the file */
png_write_end(png_ptr, info_ptr);
- /* if you malloced the palette, free it here */
- if (info_ptr->palette){
- delete [] (info_ptr->palette);
- info_ptr->palette = NULL;
- }
-
/* clean up after the write, and free any memory allocated */
png_destroy_write_struct(&png_ptr, (png_infopp)&info_ptr);
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