diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/modules/Makefile.am | 2 | ||||
| -rw-r--r-- | src/modules/checkers/Makefile.am | 3 | ||||
| -rw-r--r-- | src/modules/checkers/checkers.c | 302 |
4 files changed, 307 insertions, 2 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index a676ce4..733c459 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -3,7 +3,7 @@ SUBDIRS = libs modules noinst_LTLIBRARIES = libtil.la libtil_la_SOURCES = til_args.c til_args.h til_fb.c til_fb.h til_knobs.h til.c til.h til_settings.h til_settings.c til_threads.c til_threads.h til_util.c til_util.h libtil_la_CPPFLAGS = -I@top_srcdir@/src -libtil_la_LIBADD = modules/blinds/libblinds.la modules/compose/libcompose.la modules/drizzle/libdrizzle.la modules/flui2d/libflui2d.la modules/julia/libjulia.la modules/meta2d/libmeta2d.la modules/montage/libmontage.la modules/pixbounce/libpixbounce.la modules/plasma/libplasma.la modules/plato/libplato.la modules/ray/libray.la modules/roto/libroto.la modules/rtv/librtv.la modules/snow/libsnow.la modules/sparkler/libsparkler.la modules/spiro/libspiro.la modules/stars/libstars.la modules/submit/libsubmit.la modules/swab/libswab.la modules/swarm/libswarm.la libs/grid/libgrid.la libs/puddle/libpuddle.la libs/ray/libray.la libs/sig/libsig.la libs/txt/libtxt.la libs/ascii/libascii.la libs/din/libdin.la +libtil_la_LIBADD = modules/blinds/libblinds.la modules/checkers/libcheckers.la modules/compose/libcompose.la modules/drizzle/libdrizzle.la modules/flui2d/libflui2d.la modules/julia/libjulia.la modules/meta2d/libmeta2d.la modules/montage/libmontage.la modules/pixbounce/libpixbounce.la modules/plasma/libplasma.la modules/plato/libplato.la modules/ray/libray.la modules/roto/libroto.la modules/rtv/librtv.la modules/snow/libsnow.la modules/sparkler/libsparkler.la modules/spiro/libspiro.la modules/stars/libstars.la modules/submit/libsubmit.la modules/swab/libswab.la modules/swarm/libswarm.la libs/grid/libgrid.la libs/puddle/libpuddle.la libs/ray/libray.la libs/sig/libsig.la libs/txt/libtxt.la libs/ascii/libascii.la libs/din/libdin.la if ENABLE_ROTOTILLER bin_PROGRAMS = rototiller diff --git a/src/modules/Makefile.am b/src/modules/Makefile.am index c791bc9..92a4145 100644 --- a/src/modules/Makefile.am +++ b/src/modules/Makefile.am @@ -1 +1 @@ -SUBDIRS = blinds compose drizzle flui2d julia meta2d montage pixbounce plasma plato ray roto rtv snow sparkler spiro stars submit swab swarm +SUBDIRS = blinds checkers compose drizzle flui2d julia meta2d montage pixbounce plasma plato ray roto rtv snow sparkler spiro stars submit swab swarm diff --git a/src/modules/checkers/Makefile.am b/src/modules/checkers/Makefile.am new file mode 100644 index 0000000..817e88f --- /dev/null +++ b/src/modules/checkers/Makefile.am @@ -0,0 +1,3 @@ +noinst_LTLIBRARIES = libcheckers.la +libcheckers_la_SOURCES = checkers.c +libcheckers_la_CPPFLAGS = -I@top_srcdir@/src diff --git a/src/modules/checkers/checkers.c b/src/modules/checkers/checkers.c new file mode 100644 index 0000000..a88f17c --- /dev/null +++ b/src/modules/checkers/checkers.c @@ -0,0 +1,302 @@ +/* + * Copyright (C) 2022 - Vito Caputo - <vcaputo@pengaru.com> + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <errno.h> +#include <stdlib.h> +#include <unistd.h> + +#include "til.h" +#include "til_fb.h" + + +#define CHECKERS_DEFAULT_SIZE 32 +#define CHECKERS_DEFAULT_PATTERN CHECKERS_PATTERN_CHECKERED +#define CHECKERS_DEFAULT_DYNAMICS CHECKERS_DYNAMICS_ODD +#define CHECKERS_DEFAULT_DYNAMICS_RATE 1.0 + + +typedef enum checkers_pattern_t { + CHECKERS_PATTERN_CHECKERED, + CHECKERS_PATTERN_RANDOM, +} checkers_pattern_t; + +typedef enum checkers_dynamics_t { + CHECKERS_DYNAMICS_ODD, + CHECKERS_DYNAMICS_EVEN, + CHECKERS_DYNAMICS_ALTERNATING, + CHECKERS_DYNAMICS_RANDOM, +} checkers_dynamics_t; + +typedef struct checkers_setup_t { + unsigned size; + checkers_pattern_t pattern; + checkers_dynamics_t dynamics; + float rate; +} checkers_setup_t; + +typedef struct checkers_context_t { + checkers_setup_t setup; +} checkers_context_t; + + +static checkers_setup_t checkers_default_setup = { + .size = CHECKERS_DEFAULT_SIZE, + .pattern = CHECKERS_DEFAULT_PATTERN, + .dynamics = CHECKERS_DEFAULT_DYNAMICS, + .rate = CHECKERS_DEFAULT_DYNAMICS_RATE, +}; + + +static void * checkers_create_context(unsigned ticks, unsigned num_cpus, void *setup) +{ + checkers_context_t *ctxt; + + if (!setup) + setup = &checkers_default_setup; + + ctxt = calloc(1, sizeof(checkers_context_t)); + if (!ctxt) + return NULL; + + ctxt->setup = *(checkers_setup_t *)setup; + + return ctxt; +} + + +static void checkers_destroy_context(void *context) +{ + free(context); +} + + +static int checkers_fragmenter(void *context, const til_fb_fragment_t *fragment, unsigned number, til_fb_fragment_t *res_fragment) +{ + checkers_context_t *ctxt = context; + + return til_fb_fragment_tile_single(fragment, ctxt->setup.size, number, res_fragment); +} + + +static void checkers_prepare_frame(void *context, unsigned ticks, unsigned n_cpus, til_fb_fragment_t *fragment, til_fragmenter_t *res_fragmenter) +{ + *res_fragmenter = checkers_fragmenter; +} + + +static inline unsigned hash(unsigned x) +{ + x = ((x >> 16) ^ x) * 0x61C88647; + x = ((x >> 16) ^ x) * 0x61C88647; + x = ((x >> 16) ^ x) * 0x61C88647; + x = (x >> 16) ^ x; + + return x; +} + + +static void checkers_render_fragment(void *context, unsigned ticks, unsigned cpu, til_fb_fragment_t *fragment) +{ + checkers_context_t *ctxt = context; + int state; + + switch (ctxt->setup.pattern) { + case CHECKERS_PATTERN_CHECKERED: { + unsigned tiles_per_row; + + tiles_per_row = fragment->frame_width / ctxt->setup.size; + if (tiles_per_row * ctxt->setup.size < fragment->frame_width) + tiles_per_row++; + + state = (fragment->number + (fragment->y / ctxt->setup.size) * !(tiles_per_row & 0x1)) & 0x1; + break; + } + case CHECKERS_PATTERN_RANDOM: + state = hash(fragment->number * 0x61C88647) & 0x1; + break; + } + + switch (ctxt->setup.dynamics) { + case CHECKERS_DYNAMICS_ODD: + break; + case CHECKERS_DYNAMICS_EVEN: + state = ~state & 0x1; + break; + case CHECKERS_DYNAMICS_ALTERNATING: + state ^= ((unsigned)((float)ticks * ctxt->setup.rate) & 0x1); + break; + case CHECKERS_DYNAMICS_RANDOM: /* note: the big multiply here is just to get up out of the low bits */ + state &= hash(fragment->number * 0x61C88647 + (unsigned)((float)ticks * ctxt->setup.rate)) & 0x1; + break; + } + + if (!state) + til_fb_fragment_clear(fragment); + else + til_fb_fragment_fill(fragment, 0xffffffff); +} + + +static int checkers_setup(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, void **res_setup) +{ + const char *size; + const char *pattern; + const char *dynamics; + const char *dynamics_rate; + const char *size_values[] = { + "4", + "8", + "16", + "32", + "64", + "128", + NULL + }; + const char *pattern_values[] = { + "checkered", + "random", + NULL + }; + const char *dynamics_values[] = { + "odd", + "even", + "alternating", + "random", + NULL + }; + const char *dynamics_rate_values[] = { + "1.0", + ".75", + ".5", + ".25", + ".1", + ".01", + ".001", + ".0001", + NULL + }; + int r; + + r = til_settings_get_and_describe_value(settings, + &(til_setting_desc_t){ + .name = "Checker size", + .key = "size", + .regex = "\\.[0-9]+", + .preferred = TIL_SETTINGS_STR(CHECKERS_DEFAULT_SIZE), + .values = size_values, + .annotations = NULL + }, + &size, + res_setting, + res_desc); + if (r) + return r; + + r = til_settings_get_and_describe_value(settings, + &(til_setting_desc_t){ + .name = "Checkers pattern", + .key = "pattern", + .preferred = pattern_values[0], + .values = pattern_values, + .annotations = NULL + }, + &pattern, + res_setting, + res_desc); + if (r) + return r; + + r = til_settings_get_and_describe_value(settings, + &(til_setting_desc_t){ + .name = "Checkers dynamics", + .key = "dynamics", + .preferred = dynamics_values[0], + .values = dynamics_values, + .annotations = NULL + }, + &dynamics, + res_setting, + res_desc); + if (r) + return r; + + if (strcasecmp(dynamics, "odd") && strcasecmp(dynamics, "even")) { + r = til_settings_get_and_describe_value(settings, + &(til_setting_desc_t){ + .name = "Checkers dynamics rate", + .key = "dynamics_rate", + .preferred = dynamics_rate_values[0], + .values = dynamics_rate_values, + .annotations = NULL + }, + &dynamics_rate, + res_setting, + res_desc); + if (r) + return r; + } + + if (res_setup) { + checkers_setup_t *setup; + + setup = calloc(1, sizeof(*setup)); + if (!setup) + return -ENOMEM; + + sscanf(size, "%u", &setup->size); + + if (!strcmp(pattern, "checkered")) + setup->pattern = CHECKERS_PATTERN_CHECKERED; + else if (!strcmp(pattern, "random")) + setup->pattern = CHECKERS_PATTERN_RANDOM; + else { + free(setup); + return -EINVAL; + } + + if (!strcmp(dynamics, "odd")) + setup->dynamics = CHECKERS_DYNAMICS_ODD; + else if (!strcmp(dynamics, "even")) + setup->dynamics = CHECKERS_DYNAMICS_EVEN; + else if (!strcmp(dynamics, "alternating")) + setup->dynamics = CHECKERS_DYNAMICS_ALTERNATING; + else if (!strcmp(dynamics, "random")) + setup->dynamics = CHECKERS_DYNAMICS_RANDOM; + else { + free(setup); + return -EINVAL; + } + + if (setup->dynamics != CHECKERS_DYNAMICS_ODD && setup->dynamics != CHECKERS_DYNAMICS_EVEN) + sscanf(dynamics_rate, "%f", &setup->rate); + + *res_setup = setup; + } + + return 0; +} + + +til_module_t checkers_module = { + .create_context = checkers_create_context, + .destroy_context = checkers_destroy_context, + .prepare_frame = checkers_prepare_frame, + .render_fragment = checkers_render_fragment, + .name = "checkers", + .description = "Checker-patterned overlay (threaded)", + .author = "Vito Caputo <vcaputo@pengaru.com>", + .setup = checkers_setup, +}; 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