From c6b75d3bbadedb7ae9e31617db2cfc80e029b626 Mon Sep 17 00:00:00 2001 From: tTh Date: Sun, 8 Oct 2023 09:38:42 +0200 Subject: [PATCH] working on lowpass filter --- floatimg.h | 2 +- funcs/filtrage.c | 33 +++++++++++-------- install.sh | 2 +- tools/fimgfilters.c | 78 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 99 insertions(+), 16 deletions(-) create mode 100644 tools/fimgfilters.c diff --git a/floatimg.h b/floatimg.h index 9fc3f7e6..b19364df 100644 --- a/floatimg.h +++ b/floatimg.h @@ -20,7 +20,7 @@ * https://git.tetalab.org/tTh/FloatImg */ -#define FIMG_VERSION (229) +#define FIMG_VERSION (230) #define RELEASE_NAME ("noname") #define PATCH_LEVEL ("aaaa") diff --git a/funcs/filtrage.c b/funcs/filtrage.c index 43ecbd70..da9a20c4 100644 --- a/funcs/filtrage.c +++ b/funcs/filtrage.c @@ -29,12 +29,12 @@ fprintf(stderr, "%8.3f %8.3f %8.3f\n", M[6], M[7], M[8]); sum = 0.0; for (idx=0; idx<9; idx++) sum += M[idx]; -fprintf(stderr, " sum %8.3f\n", sum); -fprintf(stderr, " mult %8.3f\n", filtr->mult); -fprintf(stderr, " offset %8.3f\n", filtr->offset); +fprintf(stderr, " sum: %8.3f\n", sum); +fprintf(stderr, " mult: %8.3f\n", filtr->mult); +fprintf(stderr, " offset: %8.3f\n", filtr->offset); value = (sum * filtr->mult) + filtr->offset; -fprintf(stderr, " value %8.3f ???\n", value); +fprintf(stderr, " value: %8.3f\n", value); return 0; } @@ -46,9 +46,9 @@ float *pr, *pg, *pb; /* alias for src pix filds */ float *M; /* alias of filter matrix */ double dval; -#if DEBUG_LEVEL -fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, src, dst, filtr); -#endif +// #if DEBUG_LEVEL +fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, src, dst, filtr); +// #endif if (src->type != FIMG_TYPE_RGB) { fprintf(stderr, "%s: src type %d invalid\n", __func__, src->type); @@ -59,12 +59,12 @@ if (dst->type != FIMG_TYPE_RGB) { return -99; } if (fimg_images_not_compatible(src, dst)) { - fprintf(stderr, "%s: src & dst not comatibles\n", __func__); + fprintf(stderr, "%s: src & dst not compatibles\n", __func__); return -98; } if (verbosity > 1) { - fimg_show_filter(__func__, filtr); + fimg_show_filter((char *)__func__, filtr); } /* aliasing some vars for cleaner code */ @@ -73,9 +73,7 @@ w = src->width; h = src->height; M = filtr->matrix; for (y=1; y < h-1; y++) { - for (x=1; x < w-1; x++) { - of = x + (y * w); dval = M[0] * pr[of-(w+1)] + @@ -142,9 +140,7 @@ if (img->type != FIMG_TYPE_RGB) { pr = img->R; pg = img->G; pb = img->B; for (y=1; y < img->height-1; y++) { - for (x=1; x < img->width-1; x++) { - offset = x + (y * img->width); cr = pr[offset] + pr[offset+1] + @@ -159,7 +155,6 @@ for (y=1; y < img->height-1; y++) { pr[offset] = cr / 4.0; pg[offset] = cg / 4.0; pb[offset] = cb / 4.0; - } } @@ -237,6 +232,9 @@ return foo; } /* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */ +/* + * XXX inplace filtering is a BAD IDEA + */ int fimg_lissage_3x3(FloatImg *img) { int foo; @@ -265,6 +263,13 @@ if (foo) { fprintf(stderr, "%s: lowpass -> %d\n", __func__, foo); abort(); } + +foo = fimg_copy_data(&tmp, img); +if (foo) { + fprintf(stderr, "%s: copy data -> %d\n", __func__, foo); + abort(); + } + foo = fimg_destroy(&tmp); if (foo) { fprintf(stderr, "%s: destroy -> %d\n", __func__, foo); diff --git a/install.sh b/install.sh index ebf9ecbc..68f383de 100755 --- a/install.sh +++ b/install.sh @@ -8,7 +8,7 @@ cp tools/mkfimg tools/fimg2pnm tools/fimgops \ tools/png2fimg tools/fimgstats tools/fimgfx \ tools/cumulfimgs tools/fimg2text \ tools/fimghalfsize \ - tools/fimgmetadata \ + tools/fimgmetadata tools/fimgfilters \ tools/fimgextract \ /usr/local/bin diff --git a/tools/fimgfilters.c b/tools/fimgfilters.c new file mode 100644 index 00000000..2057295d --- /dev/null +++ b/tools/fimgfilters.c @@ -0,0 +1,78 @@ +/* + FIMGFILTERS + =========== + new: Sun Oct 8 05:51:05 UTC 2023 +*/ + +#include +#include +#include +#include +#include +#include + +#include "../floatimg.h" + +int verbosity; + +/* --------------------------------------------------------------------- */ +int filtre_image(char *infname, char *outfname) +{ +FloatImg src, dst; +int foo; + +static FimgFilter3x3 filtre = { + { + 2.0, 3.0, 2.0, + 3.0, 4.0, 3.0, + 2.0, 3.0, 2.0, + }, + 1.0/24.0, 0.0 + }; + +fprintf(stderr, ">>> %s ( '%s' '%s' )\n", __func__, infname, outfname); + +fimg_show_filter(NULL, &filtre); + +if ((foo = fimg_create_from_dump(infname, &src))) { + fprintf(stderr, "read error on '%s' is %d\n", infname, foo); + exit(2); + } +if ((foo = fimg_clone(&src, &dst, 0))) { + fprintf(stderr, "clone error on %p is %d\n", &src, foo); + exit(3); + } + +foo = fimg_filter_3x3(&src, &dst, &filtre); +if (foo) { + fprintf(stderr, "%s: filtre -> %d\n", __func__, foo); + exit(4); + } + +foo = fimg_dump_to_file(&dst, outfname, 0); +if (foo) { + fprintf(stderr, "dumping to file give us a %d\n", foo); + } + +return -12; +} +/* --------------------------------------------------------------------- */ + +int main(int argc, char *argv[]) +{ +int foo; + +if (3 != argc) { + fprintf(stderr, "usage: %s in.fimg out.fimg\n", argv[0]); + exit(1); + } + +fprintf(stderr, " +++ %s +++\n", argv[0]); + +foo = filtre_image(argv[1], argv[2]); +fprintf(stderr, " filtrage -> %d\n", foo); + +return 0; +} +/* --------------------------------------------------------------------- */ +