+++ /dev/null
-/*
- * filter_mirror.c -- mirror filter
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <framework/mlt_filter.h>
-#include <framework/mlt_frame.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/** Do it :-).
-*/
-
-static int filter_get_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
-{
- // Pop the mirror filter from the stack
- mlt_filter this = mlt_frame_pop_service( frame );
-
- // Get the mirror type
- mlt_properties properties = MLT_FILTER_PROPERTIES( this );
-
- // Get the properties
- char *mirror = mlt_properties_get( properties, "mirror" );
-
- // Determine if reverse is required
- int reverse = mlt_properties_get_int( properties, "reverse" );
-
- // Get the image
- int error = mlt_frame_get_image( frame, image, format, width, height, 1 );
-
- // Get the alpha
- uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
-
- // If we have an image of the right colour space
- if ( error == 0 && *format == mlt_image_yuv422 )
- {
- // We'll KISS here
- int hh = *height / 2;
-
- if ( !strcmp( mirror, "horizontal" ) )
- {
- uint8_t *p = NULL;
- uint8_t *q = NULL;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- int i;
- int uneven_w = ( *width % 2 ) * 2;
- for ( i = 0; i < *height; i ++ )
- {
- p = ( uint8_t * )*image + i * *width * 2;
- q = p + *width * 2;
- a = alpha + i * *width;
- b = a + *width - 1;
- if ( !reverse )
- {
- while ( p < q )
- {
- *p ++ = *( q - 2 );
- *p ++ = *( q - 3 - uneven_w );
- *p ++ = *( q - 4 );
- *p ++ = *( q - 1 - uneven_w );
- q -= 4;
- *a ++ = *b --;
- *a ++ = *b --;
- }
- }
- else
- {
- while ( p < q )
- {
- *( q - 2 ) = *p ++;
- *( q - 3 - uneven_w ) = *p ++;
- *( q - 4 ) = *p ++;
- *( q - 1 - uneven_w ) = *p ++;
- q -= 4;
- *b -- = *a ++;
- *b -- = *a ++;
- }
- }
- }
- }
- else if ( !strcmp( mirror, "vertical" ) )
- {
- uint16_t *end = ( uint16_t *)*image + *width * *height;
- uint16_t *p = NULL;
- uint16_t *q = NULL;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- int i;
- int j;
- for ( i = 0; i < hh; i ++ )
- {
- p = ( uint16_t * )*image + i * *width;
- q = end - ( i + 1 ) * *width;
- j = *width;
- a = alpha + i * *width;
- b = alpha + ( *height - i - 1 ) * *width;
- if ( !reverse )
- {
- while ( j -- )
- {
- *p ++ = *q ++;
- *a ++ = *b ++;
- }
- }
- else
- {
- while ( j -- )
- {
- *q ++ = *p ++;
- *b ++ = *a ++;
- }
- }
- }
- }
- else if ( !strcmp( mirror, "diagonal" ) )
- {
- uint8_t *end = ( uint8_t *)*image + *width * *height * 2;
- uint8_t *p = NULL;
- uint8_t *q = NULL;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- int i;
- int j;
- int uneven_w = ( *width % 2 ) * 2;
- for ( i = 0; i < *height; i ++ )
- {
- p = ( uint8_t * )*image + i * *width * 2;
- q = end - i * *width * 2;
- j = ( ( *width * ( *height - i ) ) / *height ) / 2;
- a = alpha + i * *width;
- b = alpha + ( *height - i - 1 ) * *width;
- if ( !reverse )
- {
- while ( j -- )
- {
- *p ++ = *( q - 2 );
- *p ++ = *( q - 3 - uneven_w );
- *p ++ = *( q - 4 );
- *p ++ = *( q - 1 - uneven_w );
- q -= 4;
- *a ++ = *b --;
- *a ++ = *b --;
- }
- }
- else
- {
- while ( j -- )
- {
- *( q - 2 ) = *p ++;
- *( q - 3 - uneven_w ) = *p ++;
- *( q - 4 ) = *p ++;
- *( q - 1 - uneven_w ) = *p ++;
- q -= 4;
- *b -- = *a ++;
- *b -- = *a ++;
- }
- }
- }
- }
- else if ( !strcmp( mirror, "xdiagonal" ) )
- {
- uint8_t *end = ( uint8_t *)*image + *width * *height * 2;
- uint8_t *p = NULL;
- uint8_t *q = NULL;
- int i;
- int j;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- int uneven_w = ( *width % 2 ) * 2;
- for ( i = 0; i < *height; i ++ )
- {
- p = ( uint8_t * )*image + ( i + 1 ) * *width * 2;
- q = end - ( i + 1 ) * *width * 2;
- j = ( ( *width * ( *height - i ) ) / *height ) / 2;
- a = alpha + ( i + 1 ) * *width - 1;
- b = alpha + ( *height - i - 1 ) * *width;
- if ( !reverse )
- {
- while ( j -- )
- {
- *q ++ = *( p - 2 );
- *q ++ = *( p - 3 - uneven_w );
- *q ++ = *( p - 4 );
- *q ++ = *( p - 1 - uneven_w );
- p -= 4;
- *b ++ = *a --;
- *b ++ = *a --;
- }
- }
- else
- {
- while ( j -- )
- {
- *( p - 2 ) = *q ++;
- *( p - 3 - uneven_w ) = *q ++;
- *( p - 4 ) = *q ++;
- *( p - 1 - uneven_w ) = *q ++;
- p -= 4;
- *a -- = *b ++;
- *a -- = *b ++;
- }
- }
- }
- }
- else if ( !strcmp( mirror, "flip" ) )
- {
- uint8_t t[ 4 ];
- uint8_t *p = NULL;
- uint8_t *q = NULL;
- int i;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- uint8_t c;
- int uneven_w = ( *width % 2 ) * 2;
- for ( i = 0; i < *height; i ++ )
- {
- p = ( uint8_t * )*image + i * *width * 2;
- q = p + *width * 2;
- a = alpha + i * *width;
- b = a + *width - 1;
- while ( p < q )
- {
- t[ 0 ] = p[ 0 ];
- t[ 1 ] = p[ 1 + uneven_w ];
- t[ 2 ] = p[ 2 ];
- t[ 3 ] = p[ 3 + uneven_w ];
- *p ++ = *( q - 2 );
- *p ++ = *( q - 3 - uneven_w );
- *p ++ = *( q - 4 );
- *p ++ = *( q - 1 - uneven_w );
- *( -- q ) = t[ 3 ];
- *( -- q ) = t[ 0 ];
- *( -- q ) = t[ 1 ];
- *( -- q ) = t[ 2 ];
- c = *a;
- *a ++ = *b;
- *b -- = c;
- c = *a;
- *a ++ = *b;
- *b -- = c;
- }
- }
- }
- else if ( !strcmp( mirror, "flop" ) )
- {
- uint16_t *end = ( uint16_t *)*image + *width * *height;
- uint16_t *p = NULL;
- uint16_t *q = NULL;
- uint16_t t;
- uint8_t *a = NULL;
- uint8_t *b = NULL;
- uint8_t c;
- int i;
- int j;
- for ( i = 0; i < hh; i ++ )
- {
- p = ( uint16_t * )*image + i * *width;
- q = end - ( i + 1 ) * *width;
- a = alpha + i * *width;
- b = alpha + ( *height - i - 1 ) * *width;
- j = *width;
- while ( j -- )
- {
- t = *p;
- *p ++ = *q;
- *q ++ = t;
- c = *a;
- *a ++ = *b;
- *b ++ = c;
- }
- }
- }
- }
-
- // Return the error
- return error;
-}
-
-/** Filter processing.
-*/
-
-static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
-{
- // Push the service on to the stack
- mlt_frame_push_service( frame, this );
-
- // Push the filter method on to the stack
- mlt_frame_push_service( frame, filter_get_image );
-
- return frame;
-}
-
-/** Constructor for the filter.
-*/
-
-mlt_filter filter_mirror_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
-{
- // Construct a new filter
- mlt_filter this = mlt_filter_new( );
-
- // If we have a filter, initialise it
- if ( this != NULL )
- {
- // Get the properties
- mlt_properties properties = MLT_FILTER_PROPERTIES( this );
-
- // Set the default mirror type
- mlt_properties_set_or_default( properties, "mirror", arg, "horizontal" );
-
- // Assign the process method
- this->process = filter_process;
- }
-
- // Return the filter
- return this;
-}
-
projects / melted / blobdiff