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|
/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2006 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_0.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Stanislav Malyshev <stas@php.net> |
+----------------------------------------------------------------------+
*/
#include "php_gd.h"
#define CTX_PUTC(c,ctx) ctx->putC(ctx, c)
static void _php_image_output_putc(struct gdIOCtx *ctx, int c)
{
/* without the following downcast, the write will fail
* (i.e., will write a zero byte) for all
* big endian architectures:
*/
unsigned char ch = (unsigned char) c;
TSRMLS_FETCH();
php_write(&ch, 1 TSRMLS_CC);
}
static int _php_image_output_putbuf(struct gdIOCtx *ctx, const void* buf, int l)
{
TSRMLS_FETCH();
return php_write((void *)buf, l TSRMLS_CC);
}
static void _php_image_output_ctxfree(struct gdIOCtx *ctx)
{
if(ctx) {
efree(ctx);
}
}
static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type, char *tn, void (*func_p)())
{
zval **imgind, **file, **quality;
gdImagePtr im;
char *fn = NULL;
FILE *fp = NULL;
int argc = ZEND_NUM_ARGS();
int q = -1, i;
gdIOCtx *ctx;
/* The quality parameter for Wbmp stands for the threshold when called from image2wbmp() */
if (argc < 1 || argc > 3 || zend_get_parameters_ex(argc, &imgind, &file, &quality) == FAILURE)
{
WRONG_PARAM_COUNT;
}
ZEND_FETCH_RESOURCE(im, gdImagePtr, imgind, -1, "Image", phpi_get_le_gd());
if (argc > 1) {
convert_to_string_ex(file);
fn = Z_STRVAL_PP(file);
if (argc == 3) {
convert_to_long_ex(quality);
q = Z_LVAL_PP(quality);
}
}
if ((argc == 2) || (argc > 2 && Z_STRLEN_PP(file))) {
PHP_GD_CHECK_OPEN_BASEDIR(fn, "Invalid filename");
fp = VCWD_FOPEN(fn, "wb");
if (!fp) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open '%s' for writing", fn);
RETURN_FALSE;
}
ctx = gdNewFileCtx(fp);
} else {
ctx = emalloc(sizeof(gdIOCtx));
ctx->putC = _php_image_output_putc;
ctx->putBuf = _php_image_output_putbuf;
#if HAVE_LIBGD204
ctx->gd_free = _php_image_output_ctxfree;
#else
ctx->free = _php_image_output_ctxfree;
#endif
#if APACHE && defined(CHARSET_EBCDIC)
/* XXX this is unlikely to work any more thies@thieso.net */
/* This is a binary file already: avoid EBCDIC->ASCII conversion */
ap_bsetflag(php3_rqst->connection->client, B_EBCDIC2ASCII, 0);
#endif
}
switch(image_type) {
case PHP_GDIMG_CONVERT_WBM:
if(q<0||q>255) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid threshold value '%d'. It must be between 0 and 255", q);
}
case PHP_GDIMG_TYPE_JPG:
(*func_p)(im, ctx, q);
break;
case PHP_GDIMG_TYPE_WBM:
for(i=0; i < gdImageColorsTotal(im); i++) {
if(gdImageRed(im, i) == 0) break;
}
(*func_p)(im, i, ctx);
break;
default:
(*func_p)(im, ctx);
break;
}
#if HAVE_LIBGD204
ctx->gd_free(ctx);
#else
ctx->free(ctx);
#endif
if(fp) {
fflush(fp);
fclose(fp);
}
RETURN_TRUE;
}
|
