Bibliothèque de traitements d'images en virgule flottante.
http://la.buvette.org/photos/cumul/
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179 lines
4.0 KiB
179 lines
4.0 KiB
/* |
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* Fonctions de la Fonderie du Cumul |
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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* Du code bien cracra / tTh / Tetalab |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <malloc.h> |
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#include <floatimg.h> |
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#include "fonctions.h" |
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#include "crapulator.h" |
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/* -------------------------------------------------------------- */ |
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/* global vars from main |
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*/ |
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extern int verbosity; |
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/* private vars of this module - it was very dirty |
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*/ |
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static A_Fifo g_fifo; |
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/* -------------------------------------------------------------- */ |
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static int big_adder(FloatImg *from, FloatImg *to) |
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{ |
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int size, idx; |
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size = from->width * from->height; |
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for (idx=0; idx<size; idx++) to->R[idx] += from->R[idx]; |
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for (idx=0; idx<size; idx++) to->G[idx] += from->G[idx]; |
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for (idx=0; idx<size; idx++) to->B[idx] += from->B[idx]; |
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return 0; |
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} |
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/* -------------------------------------------------------------- */ |
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/* |
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* 97% of the total run time was in that function \o_ |
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*/ |
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int faire_la_somme(A_Fifo *pfifo, FloatImg *destination, int step) |
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{ |
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int idx, foo; |
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FloatImg *pdest; |
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if (NULL==destination) { |
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pdest = &(pfifo->total); } |
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else { |
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pdest = destination; } |
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fimg_clear(pdest); |
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for (idx=0; idx<pfifo->nbslots; idx += step) { |
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/*************************************** |
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* Here was the giant bootleneck * |
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***************************************/ |
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// HERE -> foo = fimg_add_2(&(pfifo->slots[idx]), pdest); |
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foo = big_adder(&(pfifo->slots[idx]), pdest); |
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if (foo) |
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{ |
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fprintf(stderr, "%s: err %d on add_2\n", __func__, foo); |
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abort(); |
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} |
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} |
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return 0; |
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} |
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/* -------------------------------------------------------------- */ |
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/* called by 'fonderie.c' |
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* this func save the fifo content as |
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* - float FIMG |
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* - 16 bits PNM |
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* - 8 bits PNG |
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*/ |
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int export_fifo(char *fname, int postproc, int step) |
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{ |
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int foo, type; |
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foo = faire_la_somme(&g_fifo, NULL, step); |
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/* BEGIN GRUIK CODE */ |
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extern int convert_to_gray; |
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/* END OF THE KLUGE */ |
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if (convert_to_gray) { |
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fimg_to_gray(&g_fifo.total); |
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// fprintf(stderr, "%p gray-washed\n", &fifo.total); |
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} |
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if (postproc) |
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foo = crapulator(&g_fifo.total, postproc, 0.0); |
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else |
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foo = filterstack_run(1, &g_fifo.total, 0); |
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if (foo) { |
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fprintf(stderr, "%s: ERR post process picture -> %d\n", |
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__func__, foo); |
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return foo; |
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} |
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type = format_from_extension(fname); |
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switch (type) { |
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case FILE_TYPE_PNG: |
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foo = fimg_save_as_png(&g_fifo.total, fname, 0); |
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break; |
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case FILE_TYPE_PNM: |
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foo = fimg_save_as_pnm(&g_fifo.total, fname, 0); |
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break; |
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case FILE_TYPE_FIMG: |
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foo = fimg_dump_to_file(&g_fifo.total, fname, 0); |
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break; |
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default: |
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fprintf(stderr, "%s : type of '%s' unknow\n", |
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__func__, fname); |
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foo = 888; |
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break; |
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} |
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if (foo) { |
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fprintf(stderr, "ERR EXPORT '%s' is %d\n", fname, foo); |
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exit(3); |
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} |
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return 0; |
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} |
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/* -------------------------------------------------------------- */ |
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int insert_picture(FloatImg *src) |
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{ |
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FloatImg *dst; |
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int nbre; |
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/* |
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* this is the where we can insert the 'input filter' |
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*/ |
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dst = &g_fifo.slots[g_fifo.next]; |
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nbre = dst->width * dst->height * sizeof(float); |
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memcpy(dst->R, src->R, nbre); |
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memcpy(dst->G, src->G, nbre); |
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memcpy(dst->B, src->B, nbre); |
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g_fifo.next++, g_fifo.next %= g_fifo.nbslots; |
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// maybe we can write : |
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// (++fifo.next) %= fifo.nbslots; |
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if (verbosity > 2) fprintf(stderr, "%s : next slot %d\n", |
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__func__, g_fifo.next); |
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return 0; |
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} |
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/* -------------------------------------------------------------- */ |
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int create_fifo(int nbslot, int w, int h, int t) |
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{ |
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int foo, idx; |
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#if DEBUG_LEVEL |
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fprintf(stderr, ">>> %s ( %d %dx%d %d )\n", __func__, |
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nbslot, w, h, t); |
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#endif |
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memset(&g_fifo, 0, sizeof(A_Fifo)); |
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g_fifo.nbslots = nbslot; |
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g_fifo.slots = calloc(nbslot, sizeof(FloatImg)); |
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if (NULL==g_fifo.slots) abort(); |
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for (idx=0; idx<nbslot; idx++) { |
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foo = fimg_create(&g_fifo.slots[idx], w, h, t); |
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if (foo) { |
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fprintf(stderr, "%s idx %d err%d\n", __func__, idx, foo); |
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return foo; |
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} |
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} |
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foo = fimg_create(&g_fifo.total, w, h, t); |
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g_fifo.next = 0; |
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g_fifo.magic = MAGIC_FIFO; |
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return 0; |
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} |
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/* -------------------------------------------------------------- */
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