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Added colordepth for png

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This commit is contained in:
Marcus Boerger 2002-11-18 16:50:10 +00:00
parent 52f1135c8f
commit a3d821c695
1 changed files with 10 additions and 1 deletions
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11
ext/standard/image.c
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@ -276,7 +276,15 @@ static struct gfxinfo *php_handle_swf (php_stream * stream TSRMLS_DC)
static struct gfxinfo *php_handle_png (php_stream * stream TSRMLS_DC)
{
struct gfxinfo *result = NULL;
unsigned char dim[8];
unsigned char dim[9];
/* Width: 4 bytes
* Height: 4 bytes
* Bit depth: 1 byte
* Color type: 1 byte
* Compression method: 1 byte
* Filter method: 1 byte
* Interlace method: 1 byte
*/
if (php_stream_seek(stream, 8, SEEK_CUR))
return NULL;
@ -287,6 +295,7 @@ static struct gfxinfo *php_handle_png (php_stream * stream TSRMLS_DC)
result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
result->width = (((unsigned int)dim[0]) << 24) + (((unsigned int)dim[1]) << 16) + (((unsigned int)dim[2]) << 8) + ((unsigned int)dim[3]);
result->height = (((unsigned int)dim[4]) << 24) + (((unsigned int)dim[5]) << 16) + (((unsigned int)dim[6]) << 8) + ((unsigned int)dim[7]);
result->bits = (unsigned int)dim[8];
return result;
}
/* }}} */