diff options
Diffstat (limited to 'editor/pamdice.c')
| -rw-r--r-- | editor/pamdice.c | 87 |
1 files changed, 45 insertions, 42 deletions
diff --git a/editor/pamdice.c b/editor/pamdice.c index 2c53a110..b21d8bbd 100644 --- a/editor/pamdice.c +++ b/editor/pamdice.c @@ -25,15 +25,15 @@ struct cmdlineInfo { in a form easy for the program to use. */ const char * inputFileName; /* '-' if stdin */ - const char * outstem; + const char * outstem; /* null-terminated string, max MAXFILENAMELEN-10 characters */ unsigned int sliceVertically; /* boolean */ unsigned int sliceHorizontally; /* boolean */ unsigned int width; /* Meaningless if !sliceVertically */ unsigned int height; /* Meaningless if !sliceHorizontally */ - unsigned int hoverlap; + unsigned int hoverlap; /* Meaningless if !sliceVertically. Guaranteed < width */ - unsigned int voverlap; + unsigned int voverlap; /* Meaningless if !sliceHorizontally. Guaranteed < height */ unsigned int verbose; }; @@ -44,7 +44,7 @@ parseCommandLine(int argc, char ** argv, struct cmdlineInfo * const cmdlineP ) { /*---------------------------------------------------------------------------- parse program command line described in Unix standard form by argc - and argv. Return the information in the options as *cmdlineP. + and argv. Return the information in the options as *cmdlineP. If command line is internally inconsistent (invalid options, etc.), issue error message to stderr and abort program. @@ -56,14 +56,14 @@ parseCommandLine(int argc, char ** argv, /* Instructions to pm_optParseOptions3 on how to parse our options. */ optStruct3 opt; - + unsigned int outstemSpec, hoverlapSpec, voverlapSpec; unsigned int option_def_index; MALLOCARRAY_NOFAIL(option_def, 100); option_def_index = 0; /* incremented by OPTENT3 */ - OPTENT3(0, "width", OPT_UINT, &cmdlineP->width, + OPTENT3(0, "width", OPT_UINT, &cmdlineP->width, &cmdlineP->sliceVertically, 0); OPTENT3(0, "height", OPT_UINT, &cmdlineP->height, &cmdlineP->sliceHorizontally, 0); @@ -110,8 +110,8 @@ parseCommandLine(int argc, char ** argv, cmdlineP->inputFileName = "-"; else if (argc-1 == 1) cmdlineP->inputFileName = argv[1]; - else - pm_error("Progam takes at most 1 parameter: the file specification. " + else + pm_error("Program takes at most 1 parameter: the file specification. " "You specified %u", argc-1); } @@ -147,7 +147,7 @@ computeSliceGeometry(struct cmdlineInfo const cmdline, if (cmdline.height >= inpam.height) *nHorizSliceP = 1; else - *nHorizSliceP = 1 + divup(inpam.height - cmdline.height, + *nHorizSliceP = 1 + divup(inpam.height - cmdline.height, cmdline.height - cmdline.voverlap); *sliceHeightP = cmdline.height; } else { @@ -155,14 +155,14 @@ computeSliceGeometry(struct cmdlineInfo const cmdline, *sliceHeightP = inpam.height; } - *bottomSliceHeightP = + *bottomSliceHeightP = inpam.height - (*nHorizSliceP-1) * (cmdline.height - cmdline.voverlap); if (cmdline.sliceVertically) { if (cmdline.width >= inpam.width) *nVertSliceP = 1; else - *nVertSliceP = 1 + divup(inpam.width - cmdline.width, + *nVertSliceP = 1 + divup(inpam.width - cmdline.width, cmdline.width - cmdline.hoverlap); *sliceWidthP = cmdline.width; } else { @@ -170,7 +170,7 @@ computeSliceGeometry(struct cmdlineInfo const cmdline, *sliceWidthP = inpam.width; } - *rightSliceWidthP = + *rightSliceWidthP = inpam.width - (*nVertSliceP-1) * (cmdline.width - cmdline.hoverlap); if (verbose) { @@ -180,7 +180,7 @@ computeSliceGeometry(struct cmdlineInfo const cmdline, *nVertSliceP, *nHorizSliceP, *sliceWidthP, *sliceHeightP); if (*rightSliceWidthP != *sliceWidthP) - pm_message("Right vertical slice is only %u wide", + pm_message("Right vertical slice is only %u wide", *rightSliceWidthP); if (*bottomSliceHeightP != *sliceHeightP) pm_message("Bottom horizontal slice is only %u high", @@ -207,7 +207,7 @@ ndigits(unsigned int const arg) { static void -computeOutputFilenameFormat(int const format, +computeOutputFilenameFormat(int const format, char const outstem[], unsigned int const nHorizSlice, unsigned int const nVertSlice, @@ -222,7 +222,7 @@ computeOutputFilenameFormat(int const format, case PAM_TYPE: filenameSuffix = "pam"; break; default: filenameSuffix = ""; break; } - + pm_asprintf(filenameFormatP, "%s_%%0%uu_%%0%uu.%s", outstem, ndigits(nHorizSlice), ndigits(nVertSlice), filenameSuffix); @@ -234,12 +234,12 @@ computeOutputFilenameFormat(int const format, static void -openOutStreams(struct pam const inpam, +openOutStreams(struct pam const inpam, struct pam outpam[], - unsigned int const horizSlice, + unsigned int const horizSlice, unsigned int const nHorizSlice, unsigned int const nVertSlice, - unsigned int const sliceHeight, + unsigned int const sliceHeight, unsigned int const sliceWidth, unsigned int const rightSliceWidth, unsigned int const hOverlap, @@ -265,17 +265,17 @@ openOutStreams(struct pam const inpam, else { outpam[vertSlice] = inpam; outpam[vertSlice].file = pm_openw(filename); - - outpam[vertSlice].width = + + outpam[vertSlice].width = vertSlice < nVertSlice-1 ? sliceWidth : rightSliceWidth; - + outpam[vertSlice].height = sliceHeight; - + pnm_writepaminit(&outpam[vertSlice]); pm_strfree(filename); } - } + } pm_strfree(filenameFormat); } @@ -285,14 +285,14 @@ static void closeOutFiles(struct pam pam[], unsigned int const nVertSlice) { unsigned int vertSlice; - + for (vertSlice = 0; vertSlice < nVertSlice; ++vertSlice) pm_close(pam[vertSlice].file); } static void -sliceRow(tuple inputRow[], - struct pam outpam[], +sliceRow(tuple inputRow[], + struct pam outpam[], unsigned int const nVertSlice, unsigned int const hOverlap) { /*---------------------------------------------------------------------------- @@ -306,11 +306,11 @@ sliceRow(tuple inputRow[], tuple * outputRow; unsigned int vertSlice; unsigned int const sliceWidth = outpam[0].width; - unsigned int const stride = + unsigned int const stride = nVertSlice > 1 ? sliceWidth - hOverlap : sliceWidth; - for (vertSlice = 0, outputRow = inputRow; - vertSlice < nVertSlice; + for (vertSlice = 0, outputRow = inputRow; + vertSlice < nVertSlice; outputRow += stride, ++vertSlice) { pnm_writepamrow(&outpam[vertSlice], outputRow); } @@ -336,7 +336,7 @@ static void initInput(struct inputWindow * const inputWindowP, struct pam * const pamP, unsigned int const windowSize) { - + struct pam allocPam; /* Just for allocating the window array */ unsigned int i; @@ -345,7 +345,7 @@ initInput(struct inputWindow * const inputWindowP, allocPam = *pamP; allocPam.height = windowSize; - + inputWindowP->rows = pnm_allocpamarray(&allocPam); inputWindowP->firstRowInWindow = 0; @@ -388,7 +388,7 @@ getInputRow(struct inputWindow * const inputWindowP, /* Read in the new last row in the window */ inputWindowP->rows[i] = oldRow0; /* Reuse the memory */ pnm_readpamrow(&inputWindowP->pam, inputWindowP->rows[i]); - } + } return inputWindowP->rows[row - inputWindowP->firstRowInWindow]; } @@ -428,7 +428,7 @@ main(int argc, char ** argv) { /* Width in pam columns of each vertical slice, except the rightmost slice, which may be narrower. If we aren't slicing vertically, that means one slice, i.e. the slice width - is the image width. + is the image width. */ unsigned int rightSliceWidth; /* Width in pam columns of the rightmost vertical slice. */ @@ -436,23 +436,23 @@ main(int argc, char ** argv) { /* Height in pam rows of each horizontal slice, except the bottom slice, which may be shorter. If we aren't slicing horizontally, that means one slice, i.e. the slice height - is the image height. + is the image height. */ unsigned int bottomSliceHeight; /* Height in pam rows of the bottom horizontal slice. */ unsigned int nHorizSlice; unsigned int nVertSlice; struct inputWindow inputWindow; - + struct pam * outpam; /* malloc'ed. outpam[x] is the pam structure that controls the current horizontal slice of vertical slice x. */ pnm_init(&argc, argv); - + parseCommandLine(argc, argv, &cmdline); - + ifP = pm_openr(cmdline.inputFileName); pnm_readpaminit(ifP, &inpam, PAM_STRUCT_SIZE(tuple_type)); @@ -462,19 +462,19 @@ main(int argc, char ** argv) { &nVertSlice, &sliceWidth, &rightSliceWidth); allocOutpam(nVertSlice, &outpam); - - initInput(&inputWindow, &inpam, + + initInput(&inputWindow, &inpam, nHorizSlice > 1 ? cmdline.voverlap + 1 : 1); for (horizSlice = 0; horizSlice < nHorizSlice; ++horizSlice) { - unsigned int const thisSliceFirstRow = + unsigned int const thisSliceFirstRow = horizSlice * (sliceHeight - cmdline.voverlap); - unsigned int const thisSliceHeight = + unsigned int const thisSliceHeight = horizSlice < nHorizSlice-1 ? sliceHeight : bottomSliceHeight; unsigned int row; - openOutStreams(inpam, outpam, horizSlice, nHorizSlice, nVertSlice, + openOutStreams(inpam, outpam, horizSlice, nHorizSlice, nVertSlice, thisSliceHeight, sliceWidth, rightSliceWidth, cmdline.hoverlap, cmdline.outstem); @@ -494,3 +494,6 @@ main(int argc, char ** argv) { return 0; } + + + |