From: Michael Gernoth <michael@gernoth.net>
Date: Sun, 6 Jun 2010 01:37:49 +0000 (+0200)
Subject: initialize zlib
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/rigol/commitdiff_plain/070fd3ff6fdc7ab2d22ccdc4a95d6532bb8f4157

initialize zlib
---

diff --git a/png.c b/png.c
index 98d5993..accf415 100644
--- a/png.c
+++ b/png.c
@@ -2,6 +2,8 @@
 #include <stdint.h>
 #include <arpa/inet.h>
 #include <zlib.h>
+#include <stdio.h>
+#include <stdlib.h>
 
 #include "png.h"
 
@@ -76,6 +78,7 @@ unsigned char *lcd2png(unsigned char *lcd, int *len)
 	uint32_t l;
 	int i;
 	int toalloc = 0;
+	z_stream strm;
 
 	for(i = 0; i < 256; i++) {
 		lut[i][0] = ((i >> 6) * 0x55);
@@ -89,6 +92,15 @@ unsigned char *lcd2png(unsigned char *lcd, int *len)
 		screen_conv[i+2] = lut[lcd[i/3]][2];
 	}
 
+	strm.zalloc = Z_NULL;
+	strm.zfree = Z_NULL;
+	strm.opaque = Z_NULL;
+	if (deflateInit(&strm, 9) != Z_OK) {
+		perror("deflateInit");
+		exit(EXIT_FAILURE);
+	}
+
+
 	image = malloc(320*234*2); /* TODO: FIXME! */
 	outpos = image;
 	memcpy(outpos, png, sizeof(png));