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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2017-09-23 02:21:53 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2017-09-23 02:21:53 +0000 |
commit | e441cad79038c88d41057f3446af5921433e2d8b (patch) | |
tree | f016b1b565c317c0df49852086dca6680801720a | |
parent | 92bce531c8367d260d48ed5b54f4162aeaef9b41 (diff) | |
download | netpbm-mirror-e441cad79038c88d41057f3446af5921433e2d8b.tar.gz netpbm-mirror-e441cad79038c88d41057f3446af5921433e2d8b.tar.xz netpbm-mirror-e441cad79038c88d41057f3446af5921433e2d8b.zip |
improve comments
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@3069 9d0c8265-081b-0410-96cb-a4ca84ce46f8
-rw-r--r-- | converter/other/pnmtopalm/pnmtopalm.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/converter/other/pnmtopalm/pnmtopalm.c b/converter/other/pnmtopalm/pnmtopalm.c index 09238e91..0e27875e 100644 --- a/converter/other/pnmtopalm/pnmtopalm.c +++ b/converter/other/pnmtopalm/pnmtopalm.c @@ -243,14 +243,14 @@ determinePalmFormat(unsigned int const cols, *colormapPP = NULL; } else if (PNM_FORMAT_TYPE(format) == PPM_TYPE) { - /* We assume that we only get a PPM if the image cannot be represented - as PBM or PGM. There are two options here: either 8-bit with a + /* We don't attempt to identify PPM files that are actually + monochrome. So there are two options here: either 8-bit with a colormap, either the standard one or a custom one, or 16-bit direct - color. In the 8-bit case, if there is a custom colormap ispecified - (not recommended by Palm) we will put in our own colormap; - otherwise we will assume that the colors have been mapped to the - default Palm colormap by appropriate use of pnmquant. We try for - 8-bit color first, since it works on more PalmOS devices. + color. In the colormap case, if there is a custom colormap + specified (not recommended by Palm) we will put in our own + colormap; otherwise we will assume that the colors have been mapped + to the default Palm colormap by appropriate use of Pnmquant. We + try for colormapped first, since it works on more PalmOS devices. */ if ((bppSpecified && bpp == 16) || (!bppSpecified && maxBppSpecified && maxBpp == 16)) { @@ -259,7 +259,7 @@ determinePalmFormat(unsigned int const cols, *colormapPP = NULL; *bppP = 16; } else if (!haveCustomColormap) { - /* standard indexed 8-bit color */ + /* colormapped with the standard colormap */ *colormapPP = palmcolor_build_default_8bit_colormap(); *bppP = 8; if ((bppSpecified && bpp != 8) || (maxBppSpecified && maxBpp < 8)) @@ -269,7 +269,7 @@ determinePalmFormat(unsigned int const cols, if (verbose) pm_message("Output is color with default colormap at 8 bpp"); } else { - /* indexed 8-bit color with a custom colormap */ + /* colormapped with a custom colormap */ *colormapPP = palmcolor_build_custom_8bit_colormap(rows, cols, xels); for (*bppP = 1; (1 << *bppP) < (*colormapPP)->ncolors; *bppP *= 2); |