2 * filter_avcolour_space.c -- Colour space filter
3 * Copyright (C) 2004-2005 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "filter_avcolour_space.h"
23 #include <framework/mlt_frame.h>
25 // ffmpeg Header files
31 static inline int convert_mlt_to_av_cs( mlt_image_format format )
38 value = PIX_FMT_RGB24;
40 case mlt_image_rgb24a:
41 value = PIX_FMT_RGBA32;
43 case mlt_image_yuv422:
44 value = PIX_FMT_YUV422;
46 case mlt_image_yuv420p:
47 value = PIX_FMT_YUV420P;
50 fprintf( stderr, "Invalid format...\n" );
57 static inline void convert_image( uint8_t *out, uint8_t *in, int out_fmt, int in_fmt, int width, int height )
59 if ( in_fmt == PIX_FMT_YUV420P && out_fmt == PIX_FMT_YUV422 )
62 register int half = width >> 1;
63 register uint8_t *Y = in;
64 register uint8_t *U = Y + width * height;
65 register uint8_t *V = U + width * height / 2;
66 register uint8_t *d = out;
67 register uint8_t *y, *u, *v;
106 avpicture_fill( &output, out, out_fmt, width, height );
107 avpicture_fill( &input, in, in_fmt, width, height );
108 img_convert( &output, out_fmt, &input, in_fmt, width, height );
115 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
117 mlt_filter filter = mlt_frame_pop_service( this );
118 mlt_properties properties = MLT_FRAME_PROPERTIES( this );
119 int output_format = *format;
120 mlt_image_format forced = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "forced" );
123 // Allow this filter to force processing in a colour space other than requested
124 *format = forced != 0 ? forced : *format;
126 error = mlt_frame_get_image( this, image, format, width, height, 0 );
128 if ( error == 0 && *format != output_format && *width > 0 && *height > 0 )
130 int in_fmt = convert_mlt_to_av_cs( *format );
131 int out_fmt = convert_mlt_to_av_cs( output_format );
132 int size = avpicture_get_size( out_fmt, *width, *height );
133 uint8_t *output = mlt_pool_alloc( size );
134 convert_image( output, *image, out_fmt, in_fmt, *width, *height );
136 *format = output_format;
137 mlt_properties_set_data( properties, "image", output, size, mlt_pool_release, NULL );
138 mlt_properties_set_int( properties, "format", output_format );
143 /** Filter processing.
146 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
148 mlt_frame_push_service( frame, this );
149 mlt_frame_push_get_image( frame, filter_get_image );
153 /** Constructor for the filter.
156 mlt_filter filter_avcolour_space_init( void *arg )
158 mlt_filter this = mlt_filter_new( );
160 this->process = filter_process;