| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
- | Author: Rasmus Lerdorf <rasmus@php.net> |
+ | Authors: Rasmus Lerdorf <rasmus@php.net> |
+ | Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
PHPAPI const char php_sig_jpg[3] = {(char) 0xff, (char) 0xd8, (char) 0xff};
PHPAPI const char php_sig_png[8] = {(char) 0x89, (char) 0x50, (char) 0x4e, (char) 0x47,
(char) 0x0d, (char) 0x0a, (char) 0x1a, (char) 0x0a};
+PHPAPI const char php_sig_tif_ii[8] = {'I','I', (char)0x2A, (char)0x00, (char)0x08, (char)0x00, (char)0x00, (char)0x00};
+PHPAPI const char php_sig_tif_mm[8] = {'M','M', (char)0x00, (char)0x2A, (char)0x00, (char)0x00, (char)0x00, (char)0x08};
+
/* return info as a struct, to make expansion easier */
}
/* }}} */
-/* main function */
+/* {{{ tiff constants
+ */
+PHPAPI const int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8};
+
+/* uncompressed only */
+#define TAG_IMAGEWIDTH 0x0100
+#define TAG_IMAGEHEIGHT 0x0101
+/* compressed images only */
+#define TAG_COMP_IMAGEWIDTH 0xA002
+#define TAG_COMP_IMAGEHEIGHT 0xA003
+
+#define TAG_FMT_BYTE 1
+#define TAG_FMT_STRING 2
+#define TAG_FMT_USHORT 3
+#define TAG_FMT_ULONG 4
+#define TAG_FMT_URATIONAL 5
+#define TAG_FMT_SBYTE 6
+#define TAG_FMT_UNDEFINED 7
+#define TAG_FMT_SSHORT 8
+#define TAG_FMT_SLONG 9
+#define TAG_FMT_SRATIONAL 10
+#define TAG_FMT_SINGLE 11
+#define TAG_FMT_DOUBLE 12
+
+typedef unsigned char uchar;
+/* }}} */
+
+/* {{{ php_ifd_get16u
+ * Convert a 16 bit unsigned value from file's native byte order */
+static int php_ifd_get16u(void *Short, int motorola_intel)
+{
+ if (motorola_intel) {
+ return (((uchar *)Short)[0] << 8) | ((uchar *)Short)[1];
+ } else {
+ return (((uchar *)Short)[1] << 8) | ((uchar *)Short)[0];
+ }
+}
+/* }}} */
+
+/* {{{ php_ifd_get16s
+ * Convert a 16 bit signed value from file's native byte order */
+static signed short php_ifd_get16s(void *Short, int motorola_intel)
+{
+ return (signed short)php_ifd_get16u(Short, motorola_intel);
+}
+/* }}} */
+
+/* {{{ php_ifd_get32s
+ * Convert a 32 bit signed value from file's native byte order */
+static int php_ifd_get32s(void *Long, int motorola_intel)
+{
+ if (motorola_intel) {
+ return ((( char *)Long)[0] << 24) | (((uchar *)Long)[1] << 16)
+ | (((uchar *)Long)[2] << 8 ) | (((uchar *)Long)[3] << 0 );
+ } else {
+ return ((( char *)Long)[3] << 24) | (((uchar *)Long)[2] << 16)
+ | (((uchar *)Long)[1] << 8 ) | (((uchar *)Long)[0] << 0 );
+ }
+}
+/* }}} */
+
+/* {{{ php_ifd_get32u
+ * Convert a 32 bit unsigned value from file's native byte order */
+static unsigned php_ifd_get32u(void *Long, int motorola_intel)
+{
+ return (unsigned)php_ifd_get32s(Long, motorola_intel) & 0xffffffff;
+}
+/* }}} */
+
+/* {{{ php_handle_tiff
+ main loop to parse TIFF structure */
+static struct gfxinfo *php_handle_tiff (int socketd, FILE *fp, int issock, pval *info, int motorola_intel)
+{
+ struct gfxinfo *result = NULL;
+
+ int i, sn, num_entries;
+ unsigned char *dir_entry;
+ size_t ifd_size, dir_size, entry_value, entry_length, width, height;
+ int entry_tag , entry_type;
+ char *ifd_data;
+
+ ifd_size = 2;
+ ifd_data = emalloc(ifd_size);
+ FP_FREAD(ifd_data, 2, socketd, fp, issock);
+ num_entries = php_ifd_get16u(ifd_data, motorola_intel);
+ dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
+ ifd_size = dir_size;
+ ifd_data = erealloc(ifd_data,ifd_size);
+ FP_FREAD(ifd_data+2, dir_size-2, socketd, fp, issock);
+ /* now we have the directory we can look how long it should be */
+ ifd_size = dir_size;
+ for(i=0;i<num_entries;i++) {
+ dir_entry = ifd_data+2+i*12;
+ entry_tag = php_ifd_get16u(dir_entry+0, motorola_intel);
+ entry_type = php_ifd_get16u(dir_entry+2, motorola_intel);
+ entry_length = php_ifd_get32u(dir_entry+4, motorola_intel) * php_tiff_bytes_per_format[entry_type];
+ switch(entry_type) {
+ case TAG_FMT_USHORT:
+ entry_value = php_ifd_get16u(dir_entry+8, motorola_intel);
+ break;
+ case TAG_FMT_SSHORT:
+ entry_value = php_ifd_get16s(dir_entry+8, motorola_intel);
+ break;
+ case TAG_FMT_ULONG:
+ entry_value = php_ifd_get32u(dir_entry+8, motorola_intel);
+ break;
+ case TAG_FMT_SLONG:
+ entry_value = php_ifd_get32s(dir_entry+8, motorola_intel);
+ break;
+ default:
+ continue;
+ }
+ switch(entry_tag) {
+ case TAG_IMAGEWIDTH:
+ case TAG_COMP_IMAGEWIDTH:
+ width = entry_value;
+ break;
+ case TAG_IMAGEHEIGHT:
+ case TAG_COMP_IMAGEHEIGHT:
+ height = entry_value;
+ break;
+ }
+ }
+ if ( width && height) {
+ /* not the same when in for-loop */
+ result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
+ result->height = height;
+ result->width = width;
+ return result;
+ }
+ return NULL;
+}
+/* }}} */
/* {{{ proto array getimagesize(string imagefile [, array info])
Get the size of an image as 4-element array */
if (!memcmp(filetype, php_sig_gif, 3)) {
result = php_handle_gif (socketd, fp, issock);
- itype = 1;
+ itype = IMAGE_FILETYPE_GIF;
} else if (!memcmp(filetype, php_sig_jpg, 3)) {
if (info) {
result = php_handle_jpeg(socketd, fp, issock, *info);
} else {
result = php_handle_jpeg(socketd, fp, issock, NULL);
}
- itype = 2;
+ itype = IMAGE_FILETYPE_JPEG;
} else if (!memcmp(filetype, php_sig_png, 3)) {
FP_FREAD(filetype+3, 5, socketd, fp, issock);
if (!memcmp(filetype, php_sig_png, 8)) {
result = php_handle_png(socketd, fp, issock);
- itype = 3;
+ itype = IMAGE_FILETYPE_PNG;
} else {
php_error(E_WARNING, "PNG file corrupted by ASCII conversion");
}
} else if (!memcmp(filetype, php_sig_swf, 3)) {
result = php_handle_swf(socketd, fp, issock);
- itype = 4;
+ itype = IMAGE_FILETYPE_SWF;
} else if (!memcmp(filetype, php_sig_psd, 3)) {
result = php_handle_psd(socketd, fp, issock);
- itype = 5;
+ itype = IMAGE_FILETYPE_PSD;
} else if (!memcmp(filetype, php_sig_bmp, 2)) {
result = php_handle_bmp(socketd, fp, issock);
- itype = 6;
+ itype = IMAGE_FILETYPE_BMP;
+ } else {
+ FP_FREAD(filetype+3, 5, socketd, fp, issock);
+ if (!memcmp(filetype, php_sig_tif_ii, 8)) {
+ result = php_handle_tiff(socketd, fp, issock, NULL, 0);
+ itype = IMAGE_FILETYPE_TIFF;
+ } else
+ if (!memcmp(filetype, php_sig_tif_mm, 8)) {
+ result = php_handle_tiff(socketd, fp, issock, NULL, 1);
+ itype = IMAGE_FILETYPE_TIFF;
+ }
}
zend_list_delete(rsrc_id);
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