write_png_compression_filter,
write_png8,
write_png24,
- write_png32;
+ write_png32,
+ write_png48,
+ write_png64;
#ifdef MNG_BASI_SUPPORTED
size_t
png_set_read_user_chunk_fn(ping, image, read_vpag_chunk_callback);
#endif
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+# if (PNG_LIBPNG_VER >= 10400)
+ /* Limit the size of the chunk storage cache used for sPLT, text,
+ * and unknown chunks.
+ */
+ png_set_chunk_cache_max(ping, 32767);
+# endif
+#endif
+
#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
/* Disable new libpng-1.5.10 feature */
png_set_check_for_invalid_index (ping, 0);
ping_file_depth = ping_bit_depth;
+ /* Save bit-depth and color-type in case we later want to write a PNG00 */
+ {
+ char
+ msg[MaxTextExtent];
+
+ (void) FormatLocaleString(msg,MaxTextExtent,"%d",(int) ping_color_type);
+ (void) SetImageProperty(image,"png:IHDR.color-type-orig ",msg,exception);
+
+ (void) FormatLocaleString(msg,MaxTextExtent,"%d",(int) ping_bit_depth);
+ (void) SetImageProperty(image,"png:IHDR.bit-depth-orig ",msg,exception);
+ }
+
(void) png_get_tRNS(ping, ping_info, &ping_trans_alpha, &ping_num_trans,
&ping_trans_color);
for (y=0; y < (ssize_t) image->rows; y++)
{
+ Quantum
+ alpha;
+
if (num_passes > 1)
row_offset=ping_rowbytes*y;
if (pass < num_passes-1)
continue;
- q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
+ q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
{
case 8:
{
+
if (ping_color_type == 4)
for (x=(ssize_t) image->columns-1; x >= 0; x--)
{
*r++=*p++;
- SetPixelAlpha(image,ScaleCharToQuantum((unsigned char) *p++),q);
- if (GetPixelAlpha(image,q) != OpaqueAlpha)
+
+ alpha=ScaleCharToQuantum((unsigned char)*p++);
+
+ SetPixelAlpha(image,alpha,q);
+
+ if (alpha != OpaqueAlpha)
found_transparent_pixel = MagickTrue;
+
q+=GetPixelChannels(image);
}
quantum=0;
quantum|=(*p++);
- SetPixelAlpha(image,ScaleShortToQuantum(quantum),q);
- if (GetPixelAlpha(image,q) != OpaqueAlpha)
+
+ alpha=ScaleShortToQuantum(quantum);
+ SetPixelAlpha(image,alpha,q);
+
+ if (alpha != OpaqueAlpha)
found_transparent_pixel = MagickTrue;
+
q+=GetPixelChannels(image);
}
if (ping_color_type == 4)
{
SetPixelAlpha(image,*p++,q);
+
if (GetPixelAlpha(image,q) != OpaqueAlpha)
found_transparent_pixel = MagickTrue;
+
p++;
q+=GetPixelChannels(image);
}
(png_get_valid(ping,ping_info,PNG_INFO_tRNS))) ?
BlendPixelTrait : UndefinedPixelTrait;
+#if 0 /* I'm not sure what's wrong here but it does not work. */
+ if (image->alpha_trait == BlendPixelTrait)
+ {
+ if (ping_color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ (void) SetImageType(image,GrayscaleMatteType,exception);
+
+ else if (ping_color_type == PNG_COLOR_TYPE_PALETTE)
+ (void) SetImageType(image,PaletteMatteType,exception);
+
+ else
+ (void) SetImageType(image,TrueColorMatteType,exception);
+ }
+
+ else
+ {
+ if (ping_color_type == PNG_COLOR_TYPE_GRAY)
+ (void) SetImageType(image,GrayscaleType,exception);
+
+ else if (ping_color_type == PNG_COLOR_TYPE_PALETTE)
+ (void) SetImageType(image,PaletteType,exception);
+
+ else
+ (void) SetImageType(image,TrueColorType,exception);
+ }
+#endif
+
/* Set more properties for identify to retrieve */
{
char
((image->gamma < .45) || (image->gamma > .46)))
SetImageColorspace(image,RGBColorspace,exception);
- if (LocaleCompare(image_info->magick,"PNG24") == 0)
- {
- (void) SetImageType(image,TrueColorType,exception);
- image->alpha_trait=UndefinedPixelTrait;
- }
-
- if (LocaleCompare(image_info->magick,"PNG32") == 0)
- (void) SetImageType(image,TrueColorMatteType,exception);
-
if (logging != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
" page.w: %.20g, page.h: %.20g,page.x: %.20g, page.y: %.20g.",
entry->magick=(IsImageFormatHandler *) IsPNG;
entry->adjoin=MagickFalse;
- entry->description=ConstantString("opaque 24-bit RGB");
+ entry->description=ConstantString("opaque or binary transparent 24-bit RGB");
entry->module=ConstantString("PNG");
(void) RegisterMagickInfo(entry);
entry->module=ConstantString("PNG");
(void) RegisterMagickInfo(entry);
+ entry=SetMagickInfo("PNG48");
+
+#if defined(MAGICKCORE_PNG_DELEGATE)
+ entry->decoder=(DecodeImageHandler *) ReadPNGImage;
+ entry->encoder=(EncodeImageHandler *) WritePNGImage;
+#endif
+
+ entry->magick=(IsImageFormatHandler *) IsPNG;
+ entry->adjoin=MagickFalse;
+ entry->description=ConstantString("opaque or binary transparent 48-bit RGB");
+ entry->module=ConstantString("PNG");
+ (void) RegisterMagickInfo(entry);
+
+ entry=SetMagickInfo("PNG64");
+
+#if defined(MAGICKCORE_PNG_DELEGATE)
+ entry->decoder=(DecodeImageHandler *) ReadPNGImage;
+ entry->encoder=(EncodeImageHandler *) WritePNGImage;
+#endif
+
+ entry->magick=(IsImageFormatHandler *) IsPNG;
+ entry->adjoin=MagickFalse;
+ entry->description=ConstantString("opaque or transparent 64-bit RGBA");
+ entry->module=ConstantString("PNG");
+ (void) RegisterMagickInfo(entry);
+
+ entry=SetMagickInfo("PNG00");
+
+#if defined(MAGICKCORE_PNG_DELEGATE)
+ entry->decoder=(DecodeImageHandler *) ReadPNGImage;
+ entry->encoder=(EncodeImageHandler *) WritePNGImage;
+#endif
+
+ entry->magick=(IsImageFormatHandler *) IsPNG;
+ entry->adjoin=MagickFalse;
+ entry->description=ConstantString("PNG inheriting subformat from original");
+ entry->module=ConstantString("PNG");
+ (void) RegisterMagickInfo(entry);
+
entry=SetMagickInfo("JNG");
#if defined(JNG_SUPPORTED)
(void) UnregisterMagickInfo("PNG8");
(void) UnregisterMagickInfo("PNG24");
(void) UnregisterMagickInfo("PNG32");
+ (void) UnregisterMagickInfo("PNG48");
+ (void) UnregisterMagickInfo("PNG64");
+ (void) UnregisterMagickInfo("PNG00");
(void) UnregisterMagickInfo("JNG");
#ifdef PNG_SETJMP_NOT_THREAD_SAFE
if (image->storage_class == PseudoClass &&
(mng_info->write_png8 || mng_info->write_png24 || mng_info->write_png32 ||
- (mng_info->write_png_colortype != 0 &&
- mng_info->write_png_colortype != 4)))
+ mng_info->write_png48 || mng_info->write_png64 ||
+ (mng_info->write_png_colortype != 1 &&
+ mng_info->write_png_colortype != 5)))
{
(void) SyncImage(image,exception);
image->storage_class = DirectClass;
/* Avoid the expensive BUILD_PALETTE operation if we're sure that we
* are not going to need the result.
*/
- image_colors=image->colors;
- number_opaque = image->colors;
+ image_colors = (int) image->colors;
+ number_opaque = (int) image->colors;
if (mng_info->write_png_colortype == 1 ||
mng_info->write_png_colortype == 5)
ping_have_color=MagickFalse;
if (mng_info->write_png8 || mng_info->write_png24 || mng_info->write_png32)
image_depth=8;
+ if (mng_info->write_png48 || mng_info->write_png64)
+ image_depth=16;
+
if (mng_info->write_png_depth != 0)
image_depth=mng_info->write_png_depth;
}
} /* end of write_png8 */
- else if (mng_info->write_png24 || mng_info->write_png_colortype == 3)
+ else if (mng_info->write_png_colortype == 1)
+ {
+ image_matte=MagickFalse;
+ ping_color_type=(png_byte) PNG_COLOR_TYPE_GRAY;
+ }
+
+ else if (mng_info->write_png24 || mng_info->write_png48 ||
+ mng_info->write_png_colortype == 3)
{
image_matte=MagickFalse;
ping_color_type=(png_byte) PNG_COLOR_TYPE_RGB;
}
- else if (mng_info->write_png32 || mng_info->write_png_colortype == 7)
+ else if (mng_info->write_png32 || mng_info->write_png64 ||
+ mng_info->write_png_colortype == 7)
{
image_matte=MagickTrue;
ping_color_type=(png_byte) PNG_COLOR_TYPE_RGB_ALPHA;
num_passes=png_set_interlace_handling(ping);
if ((!mng_info->write_png8 && !mng_info->write_png24 &&
+ !mng_info->write_png48 && !mng_info->write_png64 &&
!mng_info->write_png32) &&
(mng_info->IsPalette ||
(image_info->type == BilevelType)) &&
else /* Not Palette, Bilevel, or Opaque Monochrome */
{
if ((!mng_info->write_png8 && !mng_info->write_png24 &&
- !mng_info->write_png32) &&
- (image_matte != MagickFalse ||
- (ping_bit_depth >= MAGICKCORE_QUANTUM_DEPTH)) &&
- (mng_info->IsPalette) && ping_have_color == MagickFalse)
+ !mng_info->write_png48 && !mng_info->write_png64 &&
+ !mng_info->write_png32) && (image_matte != MagickFalse ||
+ (ping_bit_depth >= MAGICKCORE_QUANTUM_DEPTH)) &&
+ (mng_info->IsPalette) && ping_have_color == MagickFalse)
{
register const Quantum
*p;
for (pass=0; pass < num_passes; pass++)
{
- if ((image_depth > 8) || (mng_info->write_png24 ||
+ if ((image_depth > 8) ||
+ mng_info->write_png24 ||
mng_info->write_png32 ||
- (!mng_info->write_png8 && !mng_info->IsPalette)))
+ mng_info->write_png48 ||
+ mng_info->write_png64 ||
+ (!mng_info->write_png8 && !mng_info->IsPalette))
{
for (y=0; y < (ssize_t) image->rows; y++)
{
}
else
- /* not ((image_depth > 8) || (mng_info->write_png24 ||
- mng_info->write_png32 ||
- (!mng_info->write_png8 && !mng_info->IsPalette))) */
+ /* not ((image_depth > 8) ||
+ mng_info->write_png24 || mng_info->write_png32 ||
+ mng_info->write_png48 || mng_info->write_png64 ||
+ (!mng_info->write_png8 && !mng_info->IsPalette))
+ */
{
if ((ping_color_type != PNG_COLOR_TYPE_GRAY) &&
(ping_color_type != PNG_COLOR_TYPE_GRAY_ALPHA))
" Setting up text chunk");
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
- " keyword: %s",text[0].key);
+ " keyword: '%s'",text[0].key);
}
png_set_text(ping,ping_info,text,1);
% The only loss in data is the reduction of the sample depth
% to 8.
%
+% o PNG48: A 16-bit per sample RGB PNG datastream is written. The tRNS
+% chunk can be present to convey binary transparency by naming
+% one of the colors as transparent. If the image has more
+% than one transparent color, has semitransparent pixels, or
+% has an opaque pixel with the same RGB components as the
+% transparent color, an image is not written.
+%
+% o PNG64: A 16-bit per sample RGBA PNG is written. Partial
+% transparency is permitted, i.e., the alpha sample for
+% each pixel can have any value from 0 to 65535. The alpha
+% channel is present even if the image is fully opaque.
+%
+% o PNG00: A PNG that inherits its colortype and bit-depth from the input
+% image, if the input was a PNG, is written. If these values
+% cannot be found, then "PNG00" falls back to the regular "PNG"
+% format.
+%
% o -define: For more precise control of the PNG output, you can use the
% Image options "png:bit-depth" and "png:color-type". These
% can be set from the commandline with "-define" and also
% When png:color-type is 4 (Gray-Matte) or 6 (RGB-Matte),
% png:bit-depth can be 8 or 16.
%
-% If the image cannot be written without loss with the requested bit-depth
-% and color-type, a PNG file will not be written, and the encoder will
-% return MagickFalse.
+% If the image cannot be written without loss with the
+% requested bit-depth and color-type, a PNG file will not
+% be written, a warning will be issued, and the encoder will
+% return MagickFalse.
%
% Since image encoders should not be responsible for the "heavy lifting",
% the user should make sure that ImageMagick has already reduced the
mng_info->write_png8=LocaleCompare(image_info->magick,"PNG8") == 0;
mng_info->write_png24=LocaleCompare(image_info->magick,"PNG24") == 0;
mng_info->write_png32=LocaleCompare(image_info->magick,"PNG32") == 0;
+ mng_info->write_png48=LocaleCompare(image_info->magick,"PNG48") == 0;
+ mng_info->write_png64=LocaleCompare(image_info->magick,"PNG64") == 0;
value=GetImageOption(image_info,"png:format");
if (value != (char *) NULL)
{
+ mng_info->write_png8 = MagickFalse;
+ mng_info->write_png24 = MagickFalse;
+ mng_info->write_png32 = MagickFalse;
+ mng_info->write_png48 = MagickFalse;
+ mng_info->write_png64 = MagickFalse;
+
if (LocaleCompare(value,"png8") == 0)
- {
mng_info->write_png8 = MagickTrue;
- mng_info->write_png24 = MagickFalse;
- mng_info->write_png32 = MagickFalse;
- }
else if (LocaleCompare(value,"png24") == 0)
- {
- mng_info->write_png8 = MagickFalse;
mng_info->write_png24 = MagickTrue;
- mng_info->write_png32 = MagickFalse;
- }
else if (LocaleCompare(value,"png32") == 0)
- {
- mng_info->write_png8 = MagickFalse;
- mng_info->write_png24 = MagickFalse;
mng_info->write_png32 = MagickTrue;
+
+ else if (LocaleCompare(value,"png48") == 0)
+ mng_info->write_png48 = MagickTrue;
+
+ else if (LocaleCompare(value,"png64") == 0)
+ mng_info->write_png64 = MagickTrue;
+ }
+
+ if (LocaleCompare(value,"png00") == 0)
+ {
+ /* Retrieve png:IHDR.bit-depth-orig and png:IHDR.color-type-orig
+ Note that whitespace at the end of the property names must match
+ that in the corresponding SetImageProperty() calls.
+ */
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " Format=%s",value);
+
+ value=GetImageProperty(image,"png:IHDR.bit-depth-orig ",exception);
+
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " png00 inherited bit depth=%s",value);
+
+ if (value != (char *) NULL)
+ {
+ if (LocaleCompare(value,"1") == 0)
+ mng_info->write_png_depth = 1;
+
+ else if (LocaleCompare(value,"1") == 0)
+ mng_info->write_png_depth = 2;
+
+ else if (LocaleCompare(value,"2") == 0)
+ mng_info->write_png_depth = 4;
+
+ else if (LocaleCompare(value,"8") == 0)
+ mng_info->write_png_depth = 8;
+
+ else if (LocaleCompare(value,"16") == 0)
+ mng_info->write_png_depth = 16;
+ }
+
+ value=GetImageProperty(image,"png:IHDR.color-type-orig ",exception);
+
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " png00 inherited color type=%s",value);
+
+ if (value != (char *) NULL)
+ {
+ if (LocaleCompare(value,"0") == 0)
+ mng_info->write_png_colortype = 1;
+
+ else if (LocaleCompare(value,"2") == 0)
+ mng_info->write_png_colortype = 3;
+
+ else if (LocaleCompare(value,"3") == 0)
+ mng_info->write_png_colortype = 4;
+
+ else if (LocaleCompare(value,"4") == 0)
+ mng_info->write_png_colortype = 5;
+
+ else if (LocaleCompare(value,"6") == 0)
+ mng_info->write_png_colortype = 7;
}
}
+
if (mng_info->write_png8)
{
mng_info->write_png_colortype = /* 3 */ 4;
(void) SyncImage(image,exception);
}
+ if (mng_info->write_png48)
+ {
+ mng_info->write_png_colortype = /* 2 */ 3;
+ mng_info->write_png_depth = 16;
+ image->depth = 16;
+
+ if (image->alpha_trait == BlendPixelTrait)
+ (void) SetImageType(image,TrueColorMatteType,exception);
+
+ else
+ (void) SetImageType(image,TrueColorType,exception);
+
+ (void) SyncImage(image,exception);
+ }
+
+ if (mng_info->write_png64)
+ {
+ mng_info->write_png_colortype = /* 6 */ 7;
+ mng_info->write_png_depth = 16;
+ image->depth = 16;
+
+ if (image->alpha_trait == BlendPixelTrait)
+ (void) SetImageType(image,TrueColorMatteType,exception);
+
+ else
+ (void) SetImageType(image,TrueColorType,exception);
+
+ (void) SyncImage(image,exception);
+ }
+
value=GetImageOption(image_info,"png:bit-depth");
if (value != (char *) NULL)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
" Image depth: %.20g",(double) p->depth);
- if (p->alpha_trait)
+ if (p->alpha_trait == BlendPixelTrait)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
" Matte: True");
if (next_image->page.x || next_image->page.y)
need_defi=MagickTrue;
- if (next_image->alpha_trait)
+ if (next_image->alpha_trait == BlendPixelTrait)
need_matte=MagickTrue;
if ((int) next_image->dispose >= BackgroundDispose)
- if (next_image->alpha_trait || next_image->page.x || next_image->page.y ||
+ if ((next_image->alpha_trait == BlendPixelTrait) ||
+ next_image->page.x || next_image->page.y ||
((next_image->columns < mng_info->page.width) &&
(next_image->rows < mng_info->page.height)))
mng_info->need_fram=MagickTrue;
Write MNG BACK chunk and global bKGD chunk, if the image is transparent
or does not cover the entire frame.
*/
- if (write_mng && (image->alpha_trait || image->page.x > 0 ||
- image->page.y > 0 || (image->page.width &&
+ if (write_mng && ((image->alpha_trait == BlendPixelTrait) ||
+ image->page.x > 0 || image->page.y > 0 || (image->page.width &&
(image->page.width+image->page.x < mng_info->page.width))
|| (image->page.height && (image->page.height+image->page.y
< mng_info->page.height))))
projects / imagemagick / blobdiff