Don't directly access private pnginfo members

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1474 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 157 insertions, 0 deletions

diff --git a/converter/other/pngx.c b/converter/other/pngx.c
index f9d2491f..f1afd39e 100644
--- a/converter/other/pngx.c
+++ b/converter/other/pngx.c
@@ -144,3 +144,160 @@ pngx_writeEnd(struct pngx * const pngxP) {
 
 
 
+png_byte
+pngx_colorType(struct pngx * const pngxP) {
+
+    return png_get_color_type(pngxP->png_ptr, pngxP->info_ptr);
+}
+
+
+
+void
+pngx_setGama(struct pngx * const pngxP,
+             float         const fileGamma) {
+
+    png_set_gAMA(pngxP->png_ptr, pngxP->info_ptr, fileGamma);
+}
+
+
+
+void
+pngx_setChrm(struct pngx *      const pngxP,
+             struct pngx_chroma const chroma) {
+
+    png_set_cHRM(pngxP->png_ptr, pngxP->info_ptr, 
+                 chroma.wx, chroma.wy,
+                 chroma.rx, chroma.ry,
+                 chroma.gx, chroma.gy,
+                 chroma.bx, chroma.by);
+}
+
+
+
+void
+pngx_setPhys(struct pngx *    const pngxP,
+             struct pngx_phys const phys) {
+
+    png_set_pHYs(pngxP->png_ptr, pngxP->info_ptr, 
+                 phys.x, phys.y, phys.unit);
+}
+
+
+
+void
+pngx_setTime(struct pngx * const pngxP,
+             png_time      const timeArg) {
+
+    png_time time;
+
+    time = timeArg;
+
+    png_set_tIME(pngxP->png_ptr, pngxP->info_ptr, &time);
+}
+
+
+
+void
+pngx_setSbit(struct pngx * const pngxP,
+             png_color_8   const sbitArg) {
+
+    png_color_8 sbit;
+
+    sbit = sbitArg;
+
+    png_set_sBIT(pngxP->png_ptr, pngxP->info_ptr, &sbit);
+}
+
+
+
+void
+pngx_setInterlaceHandling(struct pngx * const pngxP) {
+
+    png_set_interlace_handling(pngxP->png_ptr);
+}
+
+
+
+void
+pngx_setPlte(struct pngx * const pngxP,
+             png_color *   const palette,
+             unsigned int  const paletteSize) {
+
+    png_set_PLTE(pngxP->png_ptr, pngxP->info_ptr, palette, paletteSize);
+}
+
+
+
+void
+pngx_setTrnsPalette(struct pngx *    const pngxP,
+                    const png_byte * const transPalette,
+                    unsigned int     const paletteSize) {
+
+    png_set_tRNS(pngxP->png_ptr, pngxP->info_ptr,
+                 (png_byte *)transPalette, paletteSize, NULL);
+}
+
+
+
+void
+pngx_setTrnsValue(struct pngx * const pngxP,
+                  png_color_16  const transColorArg) {
+
+    png_color_16 transColor;
+
+    transColor = transColorArg;
+
+    png_set_tRNS(pngxP->png_ptr, pngxP->info_ptr,
+                 NULL, 0, &transColor);
+}
+
+
+
+void
+pngx_setHist(struct pngx * const pngxP,
+             png_uint_16 * const histogram) {
+
+    png_set_hIST(pngxP->png_ptr, pngxP->info_ptr, histogram);
+}
+
+
+
+struct pngx_trans
+pngx_getTrns(struct pngx * const pngxP) {
+
+    struct pngx_trans retval;
+
+    png_get_tRNS(pngxP->png_ptr, pngxP->info_ptr,
+                 &retval.trans, &retval.numTrans, &retval.transColorP);
+
+    return retval;
+}
+
+
+
+void
+pngx_setBkgdPalette(struct pngx * const pngxP,
+                    unsigned int  const backgroundIndex) {
+
+    png_color_16 background;
+
+    background.index = backgroundIndex;
+
+    png_set_bKGD(pngxP->png_ptr, pngxP->info_ptr, &background);
+}
+
+
+
+void
+pngx_setBkgdRgb(struct pngx * const pngxP,
+                png_color_16  const backgroundArg) {
+
+    png_color_16 background;
+
+    background = backgroundArg;
+
+    png_set_bKGD(pngxP->png_ptr, pngxP->info_ptr, &background);
+}
+
+
+