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imagickpixeliterator_class.c
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imagickpixeliterator_class.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 / Imagick |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2013 Mikko Koppanen, Scott MacVicar |
| ImageMagick (c) ImageMagick Studio LLC |
+----------------------------------------------------------------------+
| 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_01.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. |
+----------------------------------------------------------------------+
| Author: Mikko Kopppanen <mkoppanen@php.net> |
| Scott MacVicar <scottmac@php.net> |
+----------------------------------------------------------------------+
*/
#include "php_imagick.h"
#include "php_imagick_defs.h"
#include "php_imagick_macros.h"
#include "php_imagick_helpers.h"
#if MagickLibVersion <= 0x628
static
long s_count_pixeliterator_rows(php_imagickpixeliterator_object *internpix)
{
long rows = 0, tmp;
PixelWand **row;
PixelResetIterator(internpix->pixel_iterator);
while ((row = PixelGetNextIteratorRow(internpix->pixel_iterator, &tmp)) != NULL)
rows++;
return rows;
}
#endif
void php_imagick_pixel_iterator_new (PixelIterator *pixel_it, zval *return_value TSRMLS_DC)
{
php_imagickpixeliterator_object *internpix;
object_init_ex(return_value, php_imagickpixeliterator_sc_entry);
internpix = Z_IMAGICKPIXELITERATOR_P(return_value);
internpix->pixel_iterator = pixel_it;
internpix->initialized = 1;
#if MagickLibVersion <= 0x628
internpix->rows = s_count_pixeliterator_rows (internpix);
#endif
}
/* {{{ proto ImagickPixelIterator ImagickPixelIterator::__construct(Imagick source)
The ImagickPixelIterator constructor
*/
PHP_METHOD(ImagickPixelIterator, __construct)
{
zval *magick_object;
php_imagickpixeliterator_object *internpix;
php_imagick_object *intern;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O|llll", &magick_object, php_imagick_sc_entry) == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
intern = Z_IMAGICK_P(magick_object);
if (!intern->magick_wand) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Invalid Imagick object passed" TSRMLS_CC);
return;
}
if (php_imagick_ensure_not_empty (intern->magick_wand) == 0)
return;
internpix->pixel_iterator = NewPixelIterator(intern->magick_wand);
if (!internpix->pixel_iterator) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Can not allocate ImagickPixelIterator" TSRMLS_CC);
return;
}
#if MagickLibVersion <= 0x628
internpix->rows = s_count_pixeliterator_rows (internpix);
#endif
internpix->initialized = 1;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::resetIterator()
Resets the pixel iterator. Use it in conjunction with PixelGetNextIteratorRow() to iterate over all the pixels in a pixel container.
*/
PHP_METHOD(ImagickPixelIterator, resetIterator)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
RETURN_THROWS();
}
PixelResetIterator(internpix->pixel_iterator);
#if MagickLibVersion <= 0x628
internpix->iterator_position = 0;
#endif
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::syncIterator()
Syncs the pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, syncIterator)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
PixelSyncIterator(internpix->pixel_iterator);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::setIteratorFirstRow()
Sets the pixel iterator to the first pixel row.
*/
PHP_METHOD(ImagickPixelIterator, setIteratorFirstRow)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
PixelSetFirstIteratorRow(internpix->pixel_iterator);
#if MagickLibVersion <= 0x628
internpix->iterator_position = 0;
#endif
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::setIteratorLastRow()
Sets the pixel iterator to the last pixel row.
*/
PHP_METHOD(ImagickPixelIterator, setIteratorLastRow)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
PixelSetLastIteratorRow(internpix->pixel_iterator);
#if MagickLibVersion <= 0x628
internpix->iterator_position = (internpix->rows - 1);
#endif
RETURN_TRUE;
}
/* }}} */
/* {{{ proto ImagickPixelIterator ImagickPixelIterator::getPixelIterator(Imagick source)
Returns a new pixel iterator, static method. This is equivalent to Imagick::getPixelIterator
which probably ought to be used in preference to this method.
*/
PHP_METHOD(ImagickPixelIterator, getPixelIterator)
{
PixelIterator *pixel_it;
zval *magick_object;
php_imagick_object *intern;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O", &magick_object, php_imagick_sc_entry) == FAILURE) {
return;
}
intern = Z_IMAGICK_P(magick_object);
if (!intern->magick_wand) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Invalid Imagick object passed" TSRMLS_CC);
return;
}
if (php_imagick_ensure_not_empty (intern->magick_wand) == 0)
return;
pixel_it = NewPixelIterator (intern->magick_wand);
if (!pixel_it) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Can not allocate ImagickPixelIterator" TSRMLS_CC);
return;
}
php_imagick_pixel_iterator_new (pixel_it, return_value TSRMLS_CC);
return;
}
/* }}} */
/* {{{ proto ImagickPixelIterator ImagickPixelIterator::newPixelIterator(Imagick source)
Returns a new pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, newPixelIterator)
{
PixelIterator *pixel_it;
zval *magick_object;
php_imagickpixeliterator_object *internpix;
php_imagick_object *intern;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O", &magick_object, php_imagick_sc_entry) == FAILURE) {
return;
}
IMAGICK_METHOD_DEPRECATED_USE_INSTEAD("ImagickPixelIterator", "newPixelIterator", "ImagickPixelIterator", "getPixelIterator");
internpix = Z_IMAGICKPIXELITERATOR_P(getThis() );
intern = Z_IMAGICK_P(magick_object);
if (!intern->magick_wand) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Invalid Imagick object passed" TSRMLS_CC);
return;
}
if (php_imagick_ensure_not_empty (intern->magick_wand) == 0)
return;
pixel_it = NewPixelIterator(intern->magick_wand);
if (!pixel_it) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Can not allocate ImagickPixelIterator" TSRMLS_CC);
return;
}
if (internpix->initialized && internpix->pixel_iterator)
DestroyPixelIterator (internpix->pixel_iterator);
internpix->pixel_iterator = pixel_it;
#if MagickLibVersion <= 0x628
internpix->rows = s_count_pixeliterator_rows (internpix);
#endif
internpix->initialized = 1;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto ImagickPixelIterator ImagickPixelIterator::getPixelRegionIterator(Imagick source, int x, int y, int columns, int rows)
Returns a new pixel region iterator, static method. This is equivalent to the non-static
Imagick::getPixelRegionIterator which ought to be used in preference to this method.
*/
PHP_METHOD(ImagickPixelIterator, getPixelRegionIterator)
{
PixelIterator *pixel_it;
zval *magick_object;
php_imagick_object *intern;
long x, y, columns, rows;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Ollll", &magick_object, php_imagick_sc_entry, &x, &y, &columns, &rows) == FAILURE) {
return;
}
intern = Z_IMAGICK_P(magick_object);
if (!intern->magick_wand) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Invalid Imagick object passed" TSRMLS_CC);
return;
}
if (php_imagick_ensure_not_empty (intern->magick_wand) == 0)
return;
pixel_it = NewPixelRegionIterator(intern->magick_wand, x, y, columns, rows);
if (!pixel_it) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Can not allocate ImagickPixelIterator" TSRMLS_CC);
return;
}
php_imagick_pixel_iterator_new (pixel_it, return_value TSRMLS_CC);
return;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::newPixelRegionIterator(Imagick source, int x, int y, int columns, int rows)
Returns a new pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, newPixelRegionIterator)
{
PixelIterator *pixel_it;
zval *magick_object;
php_imagickpixeliterator_object *internpix;
php_imagick_object *intern;
long x, y, columns, rows;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Ollll", &magick_object, php_imagick_sc_entry, &x, &y, &columns, &rows) == FAILURE) {
return;
}
IMAGICK_METHOD_DEPRECATED_USE_INSTEAD("ImagickPixelIterator", "newPixelRegionIterator", "ImagickPixelIterator", "getPixelRegionIterator");
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
intern = Z_IMAGICK_P(magick_object);
if (!intern->magick_wand) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Invalid Imagick object passed" TSRMLS_CC);
return;
}
if (php_imagick_ensure_not_empty (intern->magick_wand) == 0)
return;
pixel_it = NewPixelRegionIterator(intern->magick_wand, x, y, columns, rows);
if (!pixel_it) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "Can not allocate ImagickPixelIterator" TSRMLS_CC);
return;
}
if (internpix->initialized && internpix->pixel_iterator)
DestroyPixelIterator (internpix->pixel_iterator);
internpix->pixel_iterator = pixel_it;
#if MagickLibVersion <= 0x628
internpix->rows = s_count_pixeliterator_rows (internpix);
#endif
internpix->initialized = 1;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto int ImagickPixelIterator::getIteratorRow()
Returns the crurent pixel iterator row.
*/
PHP_METHOD(ImagickPixelIterator, getIteratorRow)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
#if MagickLibVersion <= 0x628
ZVAL_LONG(return_value, internpix->iterator_position);
#else
ZVAL_LONG(return_value, (long) PixelGetIteratorRow(internpix->pixel_iterator));
#endif
return;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::setIteratorRow(int row)
Set the pixel iterator row.
*/
PHP_METHOD(ImagickPixelIterator, setIteratorRow)
{
php_imagickpixeliterator_object *internpix;
MagickBooleanType status;
im_long row;
/* Parse parameters given to function */
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &row) == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
status = PixelSetIteratorRow(internpix->pixel_iterator, row);
if (status == MagickFalse) {
php_imagick_convert_imagickpixeliterator_exception(internpix->pixel_iterator, "Unable to set iterator row" TSRMLS_CC);
return;
}
#if MagickLibVersion <= 0x628
internpix->iterator_position = row;
#endif
RETURN_TRUE;
}
/* }}} */
static
void s_pixelwands_to_zval (PixelWand **wand_array, unsigned long num_wands, zval *return_value TSRMLS_DC)
{
php_imagickpixel_object *internp;
#if PHP_VERSION_ID >= 70000
zval obj;
#else
zval *obj;
#endif
unsigned long i;
array_init(return_value);
for (i = 0; i < num_wands; i++) {
#if PHP_VERSION_ID >= 70000
object_init_ex(&obj, php_imagickpixel_sc_entry);
internp = Z_IMAGICKPIXEL_P(&obj);
#else
MAKE_STD_ZVAL(obj);
object_init_ex(obj, php_imagickpixel_sc_entry);
internp = Z_IMAGICKPIXEL_P(obj);
#endif
internp->initialized_via_iterator = 1;
php_imagick_replace_pixelwand(internp, wand_array[i]);
#if PHP_VERSION_ID >= 70000
add_next_index_zval(return_value, &obj);
#else
add_next_index_zval(return_value, obj);
#endif
}
}
/* {{{ proto array ImagickPixelIterator::getPreviousIteratorRow()
Returns the previous row as an array of pixel wands from the pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, getPreviousIteratorRow)
{
php_imagickpixeliterator_object *internpix;
PixelWand **wand_array;
size_t num_wands;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
wand_array = PixelGetPreviousIteratorRow(internpix->pixel_iterator, &num_wands);
#if MagickLibVersion <= 0x628
if (internpix->iterator_position > 0) {
internpix->iterator_position--;
}
#endif
if (!wand_array) {
RETURN_NULL();
}
s_pixelwands_to_zval (wand_array, num_wands, return_value TSRMLS_CC);
return;
}
/* }}} */
/* {{{ proto array ImagickPixelIterator::getCurrentIteratorRow()
Returns the current row as an array of pixel wands from the pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, getCurrentIteratorRow)
{
php_imagickpixeliterator_object *internpix;
PixelWand **wand_array;
size_t num_wands;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
RETURN_THROWS();
}
#if MagickLibVersion <= 0x628
if (internpix->iterator_position >= internpix->rows) {
RETURN_NULL();
} else if (internpix->iterator_position != 0) {
long tmp;
(void)PixelGetPreviousIteratorRow(internpix->pixel_iterator, &tmp);
}
wand_array = PixelGetNextIteratorRow(internpix->pixel_iterator, &num_wands);
#else
wand_array = PixelGetCurrentIteratorRow(internpix->pixel_iterator, &num_wands);
#endif
if (!wand_array) {
RETURN_NULL();
}
s_pixelwands_to_zval (wand_array, num_wands, return_value TSRMLS_CC);
return;
}
/* }}} */
/* {{{ proto array ImagickPixelIterator::getNextIteratorRow()
Returns the next row as an array of pixel wands from the pixel iterator.
*/
PHP_METHOD(ImagickPixelIterator, getNextIteratorRow)
{
php_imagickpixeliterator_object *internpix;
PixelWand **wand_array;
size_t num_wands;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
wand_array = PixelGetNextIteratorRow(internpix->pixel_iterator, &num_wands);
#if MagickLibVersion <= 0x628
internpix->iterator_position++;
#endif
if (!wand_array) {
RETURN_NULL();
}
s_pixelwands_to_zval (wand_array, num_wands, return_value TSRMLS_CC);
return;
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::clear()
Clear resources associated with a PixelIterator.
*/
PHP_METHOD(ImagickPixelIterator, clear)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
/* Assertion failure with earlier versions */
#if MagickLibVersion <= 0x628
RETURN_TRUE;
#else
ClearPixelIterator(internpix->pixel_iterator);
RETURN_TRUE;
#endif
}
/* }}} */
/* {{{ proto bool ImagickPixelIterator::valid()
The if the current iterator row is valid
*/
PHP_METHOD(ImagickPixelIterator, valid)
{
php_imagickpixeliterator_object *internpix;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
internpix = Z_IMAGICKPIXELITERATOR_P(getThis());
if (!internpix->initialized) {
php_imagick_throw_exception (IMAGICKPIXELITERATOR_CLASS, "ImagickPixelIterator is not initialized correctly" TSRMLS_CC);
return;
}
#if MagickLibVersion <= 0x628
if (internpix->iterator_position < internpix->rows) {
RETURN_TRUE;
}
#else
/* Test if the current row is valid */
if (PixelSetIteratorRow(internpix->pixel_iterator, PixelGetIteratorRow(internpix->pixel_iterator))) {
RETURN_TRUE;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* END OF PIXELITERATOR */