+++ /dev/null
-/*
- * filter_avcolour_space.c -- Colour space filter
- * Copyright (C) 2004-2005 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>
-
-// ffmpeg Header files
-#include <avformat.h>
-#ifdef SWSCALE
-#include <swscale.h>
-#endif
-
-#if LIBAVUTIL_VERSION_INT < (50<<16)
-#define PIX_FMT_RGB32 PIX_FMT_RGBA32
-#define PIX_FMT_YUYV422 PIX_FMT_YUV422
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-static inline int is_big_endian( )
-{
- union { int i; char c[ 4 ]; } big_endian_test;
- big_endian_test.i = 1;
-
- return big_endian_test.c[ 0 ] != 1;
-}
-
-static inline int convert_mlt_to_av_cs( mlt_image_format format )
-{
- int value = 0;
-
- switch( format )
- {
- case mlt_image_rgb24:
- value = PIX_FMT_RGB24;
- break;
- case mlt_image_rgb24a:
- value = PIX_FMT_RGB32;
- break;
- case mlt_image_yuv422:
- value = PIX_FMT_YUYV422;
- break;
- case mlt_image_yuv420p:
- value = PIX_FMT_YUV420P;
- break;
- case mlt_image_opengl:
- case mlt_image_none:
- fprintf( stderr, "Invalid format...\n" );
- break;
- }
-
- return value;
-}
-
-static inline void convert_image( uint8_t *out, uint8_t *in, int out_fmt, int in_fmt, int width, int height )
-{
- AVPicture input;
- AVPicture output;
- avpicture_fill( &input, in, in_fmt, width, height );
- avpicture_fill( &output, out, out_fmt, width, height );
-#ifdef SWSCALE
- struct SwsContext *context = sws_getContext( width, height, in_fmt,
- width, height, out_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
- sws_scale( context, input.data, input.linesize, 0, height,
- output.data, output.linesize);
- sws_freeContext( context );
-#else
- img_convert( &output, out_fmt, &input, in_fmt, width, height );
-#endif
-}
-
-/** Do it :-).
-*/
-
-static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
-{
- mlt_filter filter = mlt_frame_pop_service( this );
- mlt_properties properties = MLT_FRAME_PROPERTIES( this );
- int output_format = *format;
- mlt_image_format forced = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "forced" );
- int error = 0;
-
- // Allow this filter to force processing in a colour space other than requested
- *format = forced != 0 ? forced : *format;
-
- error = mlt_frame_get_image( this, image, format, width, height, 0 );
-
- if ( error == 0 && *format != output_format && *image != NULL && output_format != mlt_image_opengl )
- {
- int in_fmt = convert_mlt_to_av_cs( *format );
- int out_fmt = convert_mlt_to_av_cs( output_format );
- int size = avpicture_get_size( out_fmt, *width, *height );
- uint8_t *output = mlt_pool_alloc( size );
- convert_image( output, *image, out_fmt, in_fmt, *width, *height );
-
- // Special case for alpha rgb input
- if ( *format == mlt_image_rgb24a )
- {
- register uint8_t *alpha = mlt_frame_get_alpha_mask( this );
- register int len = *width * *height;
- register uint8_t *bits = *image;
- register int n = ( len + 7 ) / 8;
-
- if( !is_big_endian( ) )
- bits += 3;
-
- // Extract alpha mask from the image using Duff's Device
- switch( len % 8 )
- {
- case 0: do { *alpha ++ = *bits; bits += 4;
- case 7: *alpha ++ = *bits; bits += 4;
- case 6: *alpha ++ = *bits; bits += 4;
- case 5: *alpha ++ = *bits; bits += 4;
- case 4: *alpha ++ = *bits; bits += 4;
- case 3: *alpha ++ = *bits; bits += 4;
- case 2: *alpha ++ = *bits; bits += 4;
- case 1: *alpha ++ = *bits; bits += 4;
- }
- while( --n );
- }
- }
-
- // Update the output
- *image = output;
- *format = output_format;
- mlt_properties_set_data( properties, "image", output, size, mlt_pool_release, NULL );
- mlt_properties_set_int( properties, "format", output_format );
-
- // Special case for alpha rgb output
- if ( *format == mlt_image_rgb24a )
- {
- // Fetch the alpha
- register uint8_t *alpha = mlt_frame_get_alpha_mask( this );
-
- if ( alpha != NULL )
- {
- register uint8_t *bits = *image;
- register int len = *width * *height;
- register int n = ( len + 7 ) / 8;
-
- if( !is_big_endian( ) )
- bits += 3;
-
- // Merge the alpha mask into the RGB image using Duff's Device
- switch( len % 8 )
- {
- case 0: do { *bits = *alpha++; bits += 4;
- case 7: *bits = *alpha++; bits += 4;
- case 6: *bits = *alpha++; bits += 4;
- case 5: *bits = *alpha++; bits += 4;
- case 4: *bits = *alpha++; bits += 4;
- case 3: *bits = *alpha++; bits += 4;
- case 2: *bits = *alpha++; bits += 4;
- case 1: *bits = *alpha++; bits += 4;
- }
- while( --n );
- }
- }
- }
- }
- else if ( error == 0 && *format != output_format && *image != NULL && output_format == mlt_image_opengl )
- {
- if ( *format == mlt_image_yuv422 )
- {
- int size = *width * *height * 4;
- uint8_t *output = mlt_pool_alloc( size );
- int h = *height;
- int w = *width;
- uint8_t *o = output + size;
- int ostride = w * 4;
- uint8_t *p = *image;
- uint8_t *alpha = mlt_frame_get_alpha_mask( this ) + *width * *height;
- int r, g, b;
-
- while( h -- )
- {
- w = *width;
- o -= ostride;
- alpha -= *width;
- while( w >= 2 )
- {
- YUV2RGB( *p, *( p + 1 ), *( p + 3 ), r, g, b );
- *o ++ = r;
- *o ++ = g;
- *o ++ = b;
- *o ++ = *alpha ++;
- YUV2RGB( *( p + 2 ), *( p + 1 ), *( p + 3 ), r, g, b );
- *o ++ = r;
- *o ++ = g;
- *o ++ = b;
- *o ++ = *alpha ++;
- w -= 2;
- p += 4;
- }
- o -= ostride;
- alpha -= *width;
- }
-
- mlt_properties_set_data( properties, "image", output, size, mlt_pool_release, NULL );
- mlt_properties_set_int( properties, "format", output_format );
- *image = output;
- *format = output_format;
- }
- }
-
- return error;
-}
-
-/** Filter processing.
-*/
-
-static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
-{
- mlt_frame_push_service( frame, this );
- mlt_frame_push_get_image( frame, filter_get_image );
- return frame;
-}
-
-/** Constructor for the filter.
-*/
-
-mlt_filter filter_avcolour_space_init( void *arg )
-{
- mlt_filter this = mlt_filter_new( );
- if ( this != NULL )
- this->process = filter_process;
- return this;
-}
-
projects / melted / blobdiff