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pngsave.c
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pngsave.c
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/*
* PNG image saver. Saves bitmap nodes out as PNG files, using Enough and the libpng library.
*
* A lot of inspiration came from <http://zarb.org/~gc/html/libpng.html>, thanks to G. Cottenceau
* for that.
*
* Written by Emil Brink.
*
* Copyright (c) 2005, PDC, KTH. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the distribution.
* * Neither the name of PDC, KTH nor the names of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <png.h>
#include "verse.h"
#include "enough.h"
/* Save out given bitmap node as a PNG image. */
static void save_bitmap(ENode *node)
{
char fname[128];
uint size[3], tiles[2], i, chan, x, y;
uint8 row[4 * 1024], *data[4] = { NULL, NULL, NULL, NULL };
EBitLayer *layer, *rgba[4] = { NULL, NULL, NULL, NULL };
png_structp png_ptr;
png_infop info_ptr;
FILE *f;
e_nsb_get_size((ENode *) node, &size[0], &size[1], &size[2]);
if(size[2] != 1)
{
fprintf(stderr, "** Can't save 3D image %s as PNG\n", e_ns_get_node_name(node));
return;
}
for(layer = e_nsb_get_layer_next(node, 0); layer != NULL; layer = e_nsb_get_layer_next(node, e_nsb_get_layer_id(layer) + 1))
{
const char *ln = e_nsb_get_layer_name(layer);
if(strcmp(ln, "col_r") == 0)
rgba[0] = layer;
else if(strcmp(ln, "col_g") == 0)
rgba[1] = layer;
else if(strcmp(ln, "col_b") == 0)
rgba[2] = layer;
else if(strcmp(ln, "alpha") == 0)
rgba[3] = layer;
}
chan = rgba[3] == NULL ? 3 : 4;
for(i = 0; i < chan; i++)
{
if(e_nsb_get_layer_type(rgba[i]) != VN_B_LAYER_UINT8)
{
fprintf(stderr, "** Can't save non 8-bit layer \"%s\" in \"%s\"\n", e_nsb_get_layer_name(rgba[i]), e_ns_get_node_name(node));
return;
}
data[i] = e_nsb_get_layer_data(node, rgba[i]);
}
sprintf(fname, "%s.png", e_ns_get_node_name(node));
if((f = fopen(fname, "wb")) == NULL)
{
fprintf(stderr, "** Couldn't open \"%s\" for writing\n", fname);
return;
}
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if(png_ptr == NULL)
{
fprintf(stderr, "** Couldn't create PNG write struct for \"%s\"\n", fname);
fclose(f);
return;
}
info_ptr = png_create_info_struct(png_ptr);
if(info_ptr == NULL)
{
fprintf(stderr, "** Couldn't create PNG info struct for \"%s\"\n", fname);
fclose(f);
return;
}
if(setjmp(png_jmpbuf(png_ptr)) != 0)
{
fprintf(stderr, "** Couldn't initialize PNG setjmp() for \"%s\"\n", fname);
fclose(f);
return;
}
png_init_io(png_ptr, f);
png_set_IHDR(png_ptr, info_ptr, size[0], size[1], 8,
chan == 3 ? PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE,
PNG_FILTER_TYPE_BASE);
png_write_info(png_ptr, info_ptr);
for(y = 0; y < size[1]; y++)
{
for(x = 0; x < size[0]; x++)
{
for(i = 0; i < chan; i++)
row[chan * x + i] = data[i] ? *(data[i] + y * size[0] + x) : 0;
}
png_write_row(png_ptr, row);
}
png_write_end(png_ptr, NULL);
fclose(f);
}
static void save_data(void)
{
ENode *node;
uint i;
for(i = 0; i < V_NT_NUM_TYPES; i++)
{
for(node = e_ns_get_node_next(0, 0, i); node != NULL; node = e_ns_get_node_next(e_ns_get_node_id(node) + 1, 0, i))
{
if(e_ns_get_node_type(node) == V_NT_BITMAP)
save_bitmap(node);
}
}
}
/* Just iterate over all bitmaps, and ask Enough for their layer data. Causes data to be downloaded. */
static void download_data(void)
{
void *layer, *buffer;
ENode *node;
for(node = e_ns_get_node_next(0, 0, V_NT_BITMAP); node != NULL; node = e_ns_get_node_next(e_ns_get_node_id(node) + 1, 0, V_NT_BITMAP))
{
for(layer = e_nsb_get_layer_next(node, 0); layer != NULL; layer = e_nsb_get_layer_next(node, e_nsb_get_layer_id(layer) + 1))
e_nsb_get_layer_data(node, layer);
}
}
static const char * find_param(int argc, char **argv, const char *option, const char *default_text)
{
int i;
for(i = 1; i < argc; i++)
if(strcmp(argv[i], option) == 0)
return default_text != NULL ? argv[i + 1] : "something";
return default_text;
}
int main(int argc, char **argv)
{
uint32 i, seconds, s, interval, repeat;
const char *name, *pass, *address, *tmp;
enough_init();
name = find_param(argc, argv, "-n", "pngsave");
pass = find_param(argc, argv, "-p", "pass");
address = find_param(argc, argv, "-a", "localhost");
repeat = find_param(argc, argv, "-1", NULL) == NULL;
tmp = find_param(argc, argv, "-i", "10");
if(tmp != NULL)
interval = strtoul(tmp, NULL, 10);
for(i = 1; i < argc; i++)
{
if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "help") == 0)
{
printf("Usage: pngsave <params>\n");
printf("-h This text\n");
printf("-n <name>\n");
printf("-p <pass>\n");
printf("-a <address>\n");
printf("-i <save interval in seconds>\n");
printf("-1 Save only once, then exit\n");
return EXIT_SUCCESS;
}
}
printf("Connecting to %s\n", address);
if(e_vc_connect(address, name, pass, NULL) == -1)
{
printf("Error: Invalid server address '%s'\n", address);
return TRUE;
}
while(interval != 0)
{
verse_session_get_time(&seconds, NULL);
s = seconds;
printf("Waiting %u seconds until next save\n", interval);
while(seconds < s + interval)
{
verse_callback_update(10000);
download_data();
verse_session_get_time(&seconds, NULL);
}
printf("Done waiting, beginning save\n");
save_data();
printf("Save complete\n");
if(!repeat)
break;
}
return EXIT_SUCCESS;
}