75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
#define to565(r,g,b) \
|
|
((((r) >> 3) << 11) | (((g) >> 2) << 5) | ((b) >> 3))
|
|
|
|
void to_565_raw(void)
|
|
{
|
|
unsigned char in[3];
|
|
unsigned short out;
|
|
|
|
while(read(0, in, 3) == 3) {
|
|
out = to565(in[0],in[1],in[2]);
|
|
write(1, &out, 2);
|
|
}
|
|
return;
|
|
}
|
|
|
|
void to_565_rle(void)
|
|
{
|
|
unsigned char in[3];
|
|
unsigned short last, color, count;
|
|
unsigned total = 0;
|
|
count = 0;
|
|
|
|
while(read(0, in, 3) == 3) {
|
|
color = to565(in[0],in[1],in[2]);
|
|
if (count) {
|
|
if ((color == last) && (count != 65535)) {
|
|
count++;
|
|
continue;
|
|
} else {
|
|
write(1, &count, 2);
|
|
write(1, &last, 2);
|
|
total += count;
|
|
}
|
|
}
|
|
last = color;
|
|
count = 1;
|
|
}
|
|
if (count) {
|
|
write(1, &count, 2);
|
|
write(1, &last, 2);
|
|
total += count;
|
|
}
|
|
fprintf(stderr,"%d pixels\n",total);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if ((argc > 1) && (!strcmp(argv[1],"-rle"))) {
|
|
to_565_rle();
|
|
} else {
|
|
to_565_raw();
|
|
}
|
|
return 0;
|
|
}
|