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/*************************************************************************
* Copyright (c) 2011 AT&T Intellectual Property
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Details at https://graphviz.org
*************************************************************************/
#include "config.h"
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <common/types.h>
#include <gvc/gvio.h>
#include <gvc/gvplugin_device.h>
#include <util/alloc.h>
#include <util/base64.h>
#include <util/gv_math.h>
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif
static void kitty_write(unsigned char *data, size_t data_size, unsigned width,
unsigned height, bool is_compressed) {
const size_t chunk_size = 4096;
char *output = gv_base64(data, data_size);
size_t offset = 0;
size_t size = gv_base64_size(data_size);
while (offset < size) {
int has_next_chunk = offset + chunk_size <= size;
if (offset == 0) {
printf("\033_Ga=T,f=32,s=%u,v=%u%s%s;", width, height,
chunk_size < size ? ",m=1" : "", is_compressed ? ",o=z" : "");
} else {
printf("\033_Gm=%d;", has_next_chunk);
}
size_t this_chunk_size = has_next_chunk ? chunk_size : size - offset;
fwrite(output + offset, this_chunk_size, 1, stdout);
printf("\033\\");
offset += chunk_size;
}
printf("\n");
free(output);
}
static void kitty_format(GVJ_t *job) {
unsigned char *imagedata = job->imagedata;
size_t imagedata_size = job->width * job->height * BYTES_PER_PIXEL;
argb2rgba(job->width, job->height, imagedata);
kitty_write(imagedata, imagedata_size, job->width, job->height, false);
}
static gvdevice_features_t device_features_kitty = {
GVDEVICE_DOES_TRUECOLOR, /* flags */
{0., 0.}, /* default margin - points */
{0., 0.}, /* default page width, height - points */
{96., 96.}, /* dpi */
};
static gvdevice_engine_t device_engine_kitty = {.format = kitty_format};
#ifdef HAVE_LIBZ
static int zlib_compress(unsigned char *source, uLong source_len,
unsigned char **dest, size_t *dest_len) {
uLong dest_cap = compressBound(source_len);
*dest = gv_alloc(dest_cap);
const int ret = compress(*dest, &dest_cap, source, source_len);
*dest_len = dest_cap;
return ret;
}
static void zkitty_format(GVJ_t *job) {
unsigned char *imagedata = job->imagedata;
const uLong imagedata_size = job->width * job->height * BYTES_PER_PIXEL;
argb2rgba(job->width, job->height, imagedata);
unsigned char *zbuf;
size_t zsize;
int ret = zlib_compress(imagedata, imagedata_size, &zbuf, &zsize);
assert(ret == Z_OK);
(void)ret;
kitty_write(zbuf, zsize, job->width, job->height, true);
free(zbuf);
}
static gvdevice_features_t device_features_zkitty = {
GVDEVICE_DOES_TRUECOLOR, /* flags */
{0., 0.}, /* default margin - points */
{0., 0.}, /* default page width, height - points */
{96., 96.}, /* dpi */
};
static gvdevice_engine_t device_engine_zkitty = {.format = zkitty_format};
#endif
gvplugin_installed_t gvdevice_types_kitty[] = {
{0, "kitty:cairo", 0, &device_engine_kitty, &device_features_kitty},
#ifdef HAVE_LIBZ
{1, "kittyz:cairo", 1, &device_engine_zkitty, &device_features_zkitty},
#endif
{0, NULL, 0, NULL, NULL}};
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