diff options
Diffstat (limited to 'converter/other/jpegtopnm.c')
| -rw-r--r-- | converter/other/jpegtopnm.c | 153 |
1 files changed, 90 insertions, 63 deletions
diff --git a/converter/other/jpegtopnm.c b/converter/other/jpegtopnm.c index 60ae7e42..07a7dfb0 100644 --- a/converter/other/jpegtopnm.c +++ b/converter/other/jpegtopnm.c @@ -61,6 +61,8 @@ itself, but doesn't. */ #include <jpeglib.h> + +#include "pm_c_util.h" #include "pnm.h" #include "shhopt.h" #include "mallocvar.h" @@ -109,6 +111,7 @@ struct cmdlineInfo { unsigned int comments; unsigned int dumpexif; unsigned int multiple; + unsigned int repair; }; @@ -116,9 +119,9 @@ static bool displayComments; /* User wants comments from the JPEG to be displayed */ static void -interpret_maxmemory (bool const maxmemorySpec, - const char * const maxmemory, - long int * const max_memory_to_use_p) { +interpret_maxmemory(bool const maxmemorySpec, + const char * const maxmemory, + long int * const max_memory_to_use_p) { /*---------------------------------------------------------------------------- Interpret the "maxmemory" command line option. -----------------------------------------------------------------------------*/ @@ -157,8 +160,9 @@ interpret_adobe(const int adobe, const int notadobe, static void -parse_command_line(const int argc, char ** argv, - struct cmdlineInfo *cmdlineP) { +parseCommandLine(int const argc, + char ** const argv, + struct cmdlineInfo * const cmdlineP) { /*---------------------------------------------------------------------------- Note that many of the strings that this function returns in the *cmdlineP structure are actually in the supplied argv array. And @@ -173,10 +177,10 @@ parse_command_line(const int argc, char ** argv, */ optStruct3 opt; - int i; /* local loop variable */ + unsigned int i; /* local loop variable */ - char *maxmemory; - char *dctval; + const char * maxmemory; + const char * dctval; unsigned int adobe, notadobe; unsigned int tracelevelSpec, exifSpec, dctvalSpec, maxmemorySpec; @@ -206,6 +210,7 @@ parse_command_line(const int argc, char ** argv, &exifSpec, 0); OPTENT3(0, "dumpexif", OPT_FLAG, NULL, &cmdlineP->dumpexif, 0); OPTENT3(0, "multiple", OPT_FLAG, NULL, &cmdlineP->multiple, 0); + OPTENT3(0, "repair", OPT_FLAG, NULL, &cmdlineP->repair, 0); opt.opt_table = option_def; opt.short_allowed = FALSE; /* We have no short (old-fashioned) options */ @@ -213,7 +218,8 @@ parse_command_line(const int argc, char ** argv, /* Make private copy of arguments for optParseOptions to corrupt */ argc_parse = argc; - for (i=0; i < argc; i++) argv_parse[i] = argv[i]; + for (i=0; i < argc; ++i) + argv_parse[i] = argv[i]; optParseOptions3( &argc_parse, argv_parse, opt, sizeof(opt), 0); /* Uses and sets argc_parse, argv_parse, @@ -236,11 +242,11 @@ parse_command_line(const int argc, char ** argv, if (!dctvalSpec) cmdlineP->dct_method = JDCT_DEFAULT; else { - if (STREQ(dctval, "int")) + if (streq(dctval, "int")) cmdlineP->dct_method = JDCT_ISLOW; - else if (STREQ(dctval, "fast")) + else if (streq(dctval, "fast")) cmdlineP->dct_method = JDCT_IFAST; - else if (STREQ(dctval, "float")) + else if (streq(dctval, "float")) cmdlineP->dct_method = JDCT_FLOAT; else pm_error("Invalid value for the --dct option: '%s'.", dctval); } @@ -458,32 +464,34 @@ read_rgb(JSAMPLE *ptr, const enum colorspace color_space, copy_pixel_row(). But it would be impractical to allocate and free the storage with every call to copy_pixel_row(). */ -static xel *pnmbuffer; /* Output buffer. Input to pnm_writepnmrow() */ +static xel * pnmbuffer; /* Output buffer. Input to pnm_writepnmrow() */ static void -copy_pixel_row(const JSAMPROW jpegbuffer, const int width, - const unsigned int samples_per_pixel, - const enum colorspace color_space, - const unsigned int maxval, - FILE * const output_file, const int output_type) { - JSAMPLE *ptr; - unsigned int output_cursor; /* Cursor into output buffer 'pnmbuffer' */ - - ptr = jpegbuffer; /* Start at beginning of input row */ - - for (output_cursor = 0; output_cursor < width; output_cursor++) { - xel current_pixel; - if (samples_per_pixel >= 3) { - const rgb_type * const rgb_p = read_rgb(ptr, color_space, maxval); - PPM_ASSIGN(current_pixel, rgb_p->r, rgb_p->g, rgb_p->b); - } else { - PNM_ASSIGN1(current_pixel, GETJSAMPLE(*ptr)); - } - ptr += samples_per_pixel; /* move to next pixel of input */ - pnmbuffer[output_cursor] = current_pixel; - } - pnm_writepnmrow(output_file, pnmbuffer, width, - maxval, output_type, FALSE); +copyPixelRow(JSAMPROW const jpegbuffer, + unsigned int const width, + unsigned int const samplesPerPixel, + enum colorspace const colorSpace, + FILE * const ofP, + int const format, + xelval const maxval) { + + JSAMPLE * ptr; + unsigned int outputCursor; /* Cursor into output buffer 'pnmbuffer' */ + + ptr = &jpegbuffer[0]; /* Start at beginning of input row */ + + for (outputCursor = 0; outputCursor < width; ++outputCursor) { + xel currentPixel; + if (samplesPerPixel >= 3) { + const rgb_type * const rgb_p = read_rgb(ptr, colorSpace, maxval); + PPM_ASSIGN(currentPixel, rgb_p->r, rgb_p->g, rgb_p->b); + } else { + PNM_ASSIGN1(currentPixel, GETJSAMPLE(*ptr)); + } + ptr += samplesPerPixel; /* move to next pixel of input */ + pnmbuffer[outputCursor] = currentPixel; + } + pnm_writepnmrow(ofP, pnmbuffer, width, maxval, format, FALSE); } @@ -796,17 +804,42 @@ computeColorSpace(struct jpeg_decompress_struct * const cinfoP, static void +convertRaster(struct jpeg_decompress_struct * const cinfoP, + enum colorspace const color_space, + FILE * const ofP, + xelval const format, + unsigned int const maxval) { + + JSAMPROW jpegbuffer; /* Input buffer. Filled by jpeg_scanlines() */ + + jpegbuffer = ((*cinfoP->mem->alloc_sarray) + ((j_common_ptr) cinfoP, JPOOL_IMAGE, + cinfoP->output_width * cinfoP->output_components, + (JDIMENSION) 1) + )[0]; + + while (cinfoP->output_scanline < cinfoP->output_height) { + jpeg_read_scanlines(cinfoP, &jpegbuffer, 1); + if (ofP) + copyPixelRow(jpegbuffer, cinfoP->output_width, + cinfoP->out_color_components, + color_space, ofP, format, maxval); + } +} + + + +static void convertImage(FILE * const ofP, struct cmdlineInfo const cmdline, struct jpeg_decompress_struct * const cinfoP) { - int output_type; + int format; /* The type of output file, PGM or PPM. Value is either PPM_TYPE or PGM_TYPE, which conveniently also pass as format values PPM_FORMAT and PGM_FORMAT. */ - JSAMPROW jpegbuffer; /* Input buffer. Filled by jpeg_scanlines() */ - unsigned int maxval; + xelval maxval; /* The maximum value of a sample (color component), both in the input and the output. */ @@ -817,43 +850,30 @@ convertImage(FILE * const ofP, cmdline.dct_method, cmdline.max_memory_to_use, cmdline.nosmooth); - set_color_spaces(cinfoP->jpeg_color_space, &output_type, + set_color_spaces(cinfoP->jpeg_color_space, &format, &cinfoP->out_color_space); - maxval = (1 << cinfoP->data_precision) - 1; + maxval = pm_bitstomaxval(cinfoP->data_precision); if (cmdline.verbose) - tellDetails(*cinfoP, maxval, output_type); + tellDetails(*cinfoP, maxval, format); /* Calculate output image dimensions so we can allocate space */ jpeg_calc_output_dimensions(cinfoP); - jpegbuffer = ((*cinfoP->mem->alloc_sarray) - ((j_common_ptr) cinfoP, JPOOL_IMAGE, - cinfoP->output_width * cinfoP->output_components, - (JDIMENSION) 1) - )[0]; - /* Start decompressor */ jpeg_start_decompress(cinfoP); if (ofP) /* Write pnm output header */ pnm_writepnminit(ofP, cinfoP->output_width, cinfoP->output_height, - maxval, output_type, FALSE); + maxval, format, FALSE); pnmbuffer = pnm_allocrow(cinfoP->output_width); color_space = computeColorSpace(cinfoP, cmdline.inklevel); - - /* Process data */ - while (cinfoP->output_scanline < cinfoP->output_height) { - jpeg_read_scanlines(cinfoP, &jpegbuffer, 1); - if (ofP) - copy_pixel_row(jpegbuffer, cinfoP->output_width, - cinfoP->out_color_components, - color_space, maxval, ofP, output_type); - } + + convertRaster(cinfoP, color_space, ofP, format, maxval); if (cmdline.comments) print_comments(*cinfoP); @@ -905,17 +925,25 @@ convertImages(FILE * const ofP, convertImage(ofP, cmdline, cinfoP); } } else { - if (dsDataLeft(sourceManagerP)) + if (dsDataLeft(sourceManagerP)) { convertImage(ofP, cmdline, cinfoP); - else + } else pm_error("Input stream is empty"); } + if (dsPrematureEof(sourceManagerP)) { + if (cmdline.repair) + pm_message("Premature EOF on input; repaired by padding end " + "of image."); + else + pm_error("Premature EOF on input. Use -repair to salvage."); + } } int main(int argc, char **argv) { + FILE * ofP; struct cmdlineInfo cmdline; struct jpeg_decompress_struct cinfo; @@ -924,9 +952,9 @@ main(int argc, char **argv) { pnm_init(&argc, argv); - parse_command_line(argc, argv, &cmdline); + parseCommandLine(argc, argv, &cmdline); - if (cmdline.exif_filespec && STREQ(cmdline.exif_filespec, "-")) + if (cmdline.exif_filespec && streq(cmdline.exif_filespec, "-")) /* He's got exif going to stdout, so there can be no image output */ ofP = NULL; else @@ -967,4 +995,3 @@ main(int argc, char **argv) { exit(jerr.num_warnings > 0 ? EXIT_WARNING : EXIT_SUCCESS); } - |