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Diffstat (limited to 'converter/other/pngx.h')
| -rw-r--r-- | converter/other/pngx.h | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/converter/other/pngx.h b/converter/other/pngx.h new file mode 100644 index 00000000..81e0dc55 --- /dev/null +++ b/converter/other/pngx.h @@ -0,0 +1,274 @@ +#ifndef PNGX_H_INCLUDED +#define PNGX_H_INCLUDED + +#include <png.h> +#include "pm_c_util.h" + +/* pngx is designed to be an extension of the PNG library to make using + the PNG library easier and cleaner. +*/ + +struct pngx_chroma { + float wx; + float wy; + float rx; + float ry; + float gx; + float gy; + float bx; + float by; +}; + +struct pngx_phys { + int x; + int y; + int unit; +}; + +struct pngx_text { + png_text * line; + unsigned int size; +}; + +struct pngx_plte { + png_color * palette; + unsigned int size; +}; + +struct pngx_trns { + png_byte * trans; + unsigned int numTrans; + png_color_16 transColor; +}; + +typedef enum {PNGX_READ, PNGX_WRITE} pngx_rw; + +struct pngx { + png_structp png_ptr; + png_infop info_ptr; + pngx_rw rw; + png_uint_16 maxval; + unsigned int numPassesRequired; + /* The number of times we have write the complete image to the + compressor. This is more than one when the compressor is set + up to do an interlaced format. + */ +}; + +void +pngx_create(struct pngx ** const pngxPP, + pngx_rw const rw, + jmp_buf * const jmpbufP); + +void +pngx_destroy(struct pngx * const pngxP); + +bool +pngx_chunkIsPresent(struct pngx * const pngxP, + uint32_t const chunkType); + +unsigned int +pngx_bitDepth(struct pngx * const pngxP); + +png_color_16 +pngx_bkgd(struct pngx * const pngxP); + +png_byte +pngx_colorType(struct pngx * const pngxP); + +png_byte +pngx_filterType(struct pngx * const pngxP); + +double +pngx_gama(struct pngx * const pngxP); + +uint32_t +pngx_imageHeight(struct pngx * const pngxP); + +uint32_t +pngx_imageWidth(struct pngx * const pngxP); + +png_byte +pngx_interlaceType(struct pngx * const pngxP); + +struct pngx_plte +pngx_plte(struct pngx * const pngxP); + +png_color_8 +pngx_sbit(struct pngx * const pngxP); + +struct pngx_text +pngx_text(struct pngx * const pngxP); + +png_time +pngx_time(struct pngx * const pngxP); + +struct pngx_trns +pngx_trns(struct pngx * const pngxP); + +uint32_t +pngx_xPixelsPerMeter(struct pngx * const pngxP); + +uint32_t +pngx_yPixelsPerMeter(struct pngx * const pngxP); + +float +pngx_pixelAspectRatio(struct pngx * const pngxP); + +bool +pngx_pixelAspectRatioIsKnown(struct pngx * const pngxP); + +void +pngx_removeChunk(struct pngx * const pngxP, + uint32_t const chunkType); + +void +pngx_setBkgdPalette(struct pngx * const pngxP, + unsigned int const backgroundIndex); + +void +pngx_setBkgdRgb(struct pngx * const pngxP, + png_color_16 const backgroundArg); + +void +pngx_setChrm(struct pngx * const pngxP, + struct pngx_chroma const chroma); + +typedef enum { + PNGX_PERCEPTUAL, + PNGX_RELATIVE_COLORIMETRIC, + PNGX_SATURATION, + PNGX_ABSOLUTE_COLORIMETRIC +} pngx_srgbIntent; + +const char * +pngx_srgbIntentDesc(pngx_srgbIntent const srgbIntent); + +void +pngx_setSrgb(struct pngx * const pngxP, + pngx_srgbIntent const srgbIntent); + +void +pngx_setCompressionSize(struct pngx * const pngxP, + unsigned int const bufferSize); + +void +pngx_setFilter(struct pngx * const pngxP, + int const filterSet); + +void +pngx_setGama(struct pngx * const pngxP, + float const fileGamma); + +void +pngx_setGamma(struct pngx * const pngxP, + float const displayGamma, + float const imageGamma); + +void +pngx_setHist(struct pngx * const pngxP, + png_uint_16 * const histogram); + +void +pngx_setIhdr(struct pngx * const pngxP, + unsigned int const width, + unsigned int const height, + unsigned int const bitDepth, + int const colorType, + int const interlaceMethod, + int const compressionMethod, + int const filterMethod); + +void +pngx_setInterlaceHandling(struct pngx * const pngxP); + +void +pngx_setInvalid(struct pngx * const pngxP); + +void +pngx_setPacking(struct pngx * const pngxP); + +void +pngx_setPhys(struct pngx * const pngxP, + struct pngx_phys const phys); + +void +pngx_setPlte(struct pngx * const pngxP, + png_color * const palette, + unsigned int const paletteSize); + +void +pngx_setSbit(struct pngx * const pngxP, + png_color_8 const sbit); + +void +pngx_setShift(struct pngx * const pngxP, + png_color_8 const sigBitArg); + +void +pngx_setSigBytes(struct pngx * const pngxP, + unsigned int const sigByteCt); + +void +pngx_setTextKey(png_text * const textP, + const char * const key); + +void +pngx_setTextLang(png_text * const textP, + const char * const language); + +void +pngx_setTextLangKey(png_text * const textP, + const char * const key); + +void +pngx_termText(png_text * const textP); + +void +pngx_setText(struct pngx * const pngxP, + png_textp const textP, + unsigned int const count); + +void +pngx_setTime(struct pngx * const pngxP, + time_t const timeArg); + +void +pngx_setTrnsPalette(struct pngx * const pngxP, + const png_byte * const transPalette, + unsigned int const paletteSize); + +void +pngx_setTrnsValue(struct pngx * const pngxP, + png_color_16 const transColorArg); + +void +pngx_readInfo(struct pngx * const pngxP); + +void +pngx_writeInfo(struct pngx * const pngxP); + +void +pngx_readStart(struct pngx * const pngxP, + FILE * const ifP); + +void +pngx_readRow(struct pngx * const pngxP, + png_byte * const rowBuf, + png_byte * const displayRow); + +void +pngx_readImage(struct pngx * const pngxP, + png_byte ** const image); + +void +pngx_writeRow(struct pngx * const pngxP, + const png_byte * const line); + +void +pngx_readEnd(struct pngx * const pngxP); + +void +pngx_writeEnd(struct pngx * const pngxP); + +#endif |