From 5a6c7a1fccdbf327f93dec3bb870c2ebb116d2a5 Mon Sep 17 00:00:00 2001
From: Daniel Willmann <daniel@totalueberwachung.de>
Date: Fri, 2 May 2014 22:51:55 +0200
Subject: [PATCH] WIP2
---
src/mensactrl.c | 122 ++++++++++++++++++++++++++++++++++++------------
src/mensaserv.c | 16 +++----
2 files changed, 99 insertions(+), 39 deletions(-)
diff --git a/src/mensactrl.c b/src/mensactrl.c
index 625d178..0291807 100644
--- a/src/mensactrl.c
+++ b/src/mensactrl.c
@@ -34,30 +34,93 @@
#include "common.h"
+#define ROWS_PER_LINE 7
+#define LINES_PER_MODULE 2
+#define COLS_PER_MODULE 40
+
struct mensa_fb {
int x_res, y_res;
+ int hmodules, vmodules;
int fd;
uint8_t *inputfb;
uint16_t *fbmem;
+ ssize_t size;
};
-void encodeToFb(struct mensa_fb *mensafb) {
- int pix, row, idx;
- uint16_t pattern;
-
- for (row = 0; row < mensafb->y_res; row++) {
- for (pix=0; pix<mensafb->x_res; pix++) {
- idx = row*mensafb->x_res + pix;
- if (mensafb->inputfb[idx] > 0)
- pattern = 1;
- else
- pattern = 0;
- pattern |= row << 13;
-
- mensafb->fbmem[idx] = pattern;
- }
- }
+static void blit_area(struct mensa_fb *mensafb, const int col, const int row,
+ const int width, const int height)
+{
+ int r, c;
+ int vmpos, vpos, hmpos, hpos, pos;
+
+ if (row < 0 || height < 0 || row + height > mensafb->y_res ||
+ col < 0 || width < 0 || col + width > mensafb->x_res)
+ return;
+
+ for (r = row; r < row + height; r++) {
+ for (c = col; c < col + width; c++) {
+ /* Calculate module and position inside the module */
+ vmpos = r/(LINES_PER_MODULE*ROWS_PER_LINE);
+ vpos = r%(LINES_PER_MODULE*ROWS_PER_LINE);
+ hmpos = c/(COLS_PER_MODULE);
+ hpos = c%(COLS_PER_MODULE);
+
+ pos = hpos + hmpos*COLS_PER_MODULE*LINES_PER_MODULE;
+
+ if (vpos >= ROWS_PER_LINE) {
+ vpos -= ROWS_PER_LINE;
+ pos += COLS_PER_MODULE;
+ }
+
+ pos = pos + vpos*(mensafb->vmodules*COLS_PER_MODULE*LINES_PER_MODULE);
+
+ if (mensafb->inputfb[c + r * mensafb->x_res] == 0) {
+ /* clear bit */
+ mensafb->fbmem[pos] &= ~(1<<(mensafb->vmodules - vmpos));
+ } else {
+ /* set bit */
+ mensafb->fbmem[pos] |= (1<<(mensafb->vmodules - vmpos));
+ }
+ }
+ }
+}
+
+
+void encodeToFb(struct mensa_fb *mensafb)
+{
+ blit_area(mensafb, 0, 0, mensafb->x_res, mensafb->y_res);
}
+// int pix, row, cols, idx, fbidx, i, ledrow;
+// uint16_t pattern;
+//
+// for (fbidx = 0; fbidx < mensafb->x_res * mensafb->y_res / mensafb->modules; fbidx++) {
+// cols = mensafb->x_res * 2;
+//
+// row = fbidx / cols;
+// ledrow = row;
+// pix = fbidx % cols;
+//
+// if (pix / 40 % 2 == 0) {
+// pix = pix + (pix / 40 * 40);
+// } else {
+// pix = pix + (pix / 40 * 40) + 40;
+// row = row + 7;
+// }
+//
+//
+// pattern = 0;
+// for (i = 0; i < mensafb->modules; i++) {
+// idx = row * mensafb->x_res + pix + i * mensafb->x_res * 14;
+// if (mensafb->inputfb[idx] > 0)
+// pattern |= 1 << i;
+// }
+// /* During update of the next line we want to display the
+// * content of the last one */
+// pattern |= (ledrow-1 % 7) << 5;
+//
+// mensafb->fbmem[fbidx] = pattern;
+// }
+//}
void setPixel(struct mensa_fb *mensafb, int col, int row, uint8_t bright)
@@ -72,41 +135,40 @@ void setPixel(struct mensa_fb *mensafb, int col, int row, uint8_t bright)
mensafb->inputfb[idx] = bright;
}
-static struct mensa_fb *setup_fb(const char *devname, int x, int y)
+static struct mensa_fb *setup_fb(const char *devname, int hmodules, int vmodules)
{
struct mensa_fb *mensafb = malloc(sizeof(struct mensa_fb));
int i;
+ mensafb->x_res = COLS_PER_MODULE * hmodules;
+ mensafb->y_res = ROWS_PER_LINE * LINES_PER_MODULE * vmodules;
+ mensafb->size = mensafb->x_res * ROWS_PER_LINE * LINES_PER_MODULE;
mensafb->fd = open(devname, O_RDWR);
if (mensafb->fd < 0) {
perror("opening fb");
free(mensafb);
exit(1);
}
- mensafb->inputfb = malloc(x*y*3);
+ mensafb->inputfb = malloc(mensafb->x_res * mensafb->y_res);
if (!mensafb->inputfb) {
free(mensafb);
exit(1);
}
- memset(mensafb->inputfb, 0, x*y*3);
+ memset(mensafb->inputfb, 0, mensafb->x_res * mensafb->y_res);
- mensafb->fbmem=mmap(NULL, x*5*24*2, PROT_READ|PROT_WRITE, MAP_SHARED, mensafb->fd, 0);
+ mensafb->fbmem=mmap(NULL, mensafb->size * 2,
+ PROT_READ|PROT_WRITE, MAP_SHARED, mensafb->fd, 0);
if (mensafb->fbmem==NULL) {
perror("mmap'ing fb");
free(mensafb->inputfb);
free(mensafb);
exit(1);
}
- for (i = 0; i < x*y*5*24; i++) {
- /* Init frame buffer bit clock. */
- if (i % 5 == 0)
- mensafb->fbmem[i] = 0xffff;
- if (i % 5 == 4)
- mensafb->fbmem[i] = 0x00;
- }
+ for (i = 0; i < mensafb->size ; i++)
+ mensafb->fbmem[i] = (i / (mensafb->x_res * LINES_PER_MODULE))<<5;
- mensafb->x_res = x;
- mensafb->y_res = y;
+ mensafb->hmodules = hmodules;
+ mensafb->vmodules = vmodules;
return mensafb;
}
@@ -129,7 +191,7 @@ int main(int argc, char *argv[]) {
if (rc < 0)
perror("zmq_connect");
- mensafb = setup_fb(argv[1], 40, 7);
+ mensafb = setup_fb(argv[1], 12, 5);
while (1) {
struct pixel pix;
diff --git a/src/mensaserv.c b/src/mensaserv.c
index 1774130..49bbdde 100644
--- a/src/mensaserv.c
+++ b/src/mensaserv.c
@@ -70,18 +70,16 @@
static void fade(void *publisher)
{
int i = 0;
- struct pixel pix;
+ struct pixel pix = { .x = 0, .y = 0, .bright = 255 };
while (1) {
- pix.x = i / 7;
- pix.y = i % 7;
- pix.bright = 0;
-
- zmq_send(publisher, &pix, sizeof(pix), 0);
- i = (i + 1) % (7*20);
- pix.bright = 255;
+ i = (i + 1) % (20*300);
+ if (i == 0)
+ pix.bright = 255 - pix.bright;
+ pix.x = i / 20;
+ pix.y = i % 20;
zmq_send(publisher, &pix, sizeof(pix), 0);
printf("(%u, %u): bright=%02x\n", pix.x, pix.y, pix.bright);
- usleep(10000);
+ usleep(1000);
}
}
--
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