* Copyright (C) 2004-2005 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * 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 program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * 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 General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 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 "filter_avcolour_space.h"
// ffmpeg Header files
#include <avformat.h>
+#ifdef SWSCALE
+#include <swscale.h>
+#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;
case mlt_image_yuv420p:
value = PIX_FMT_YUV420P;
break;
+ case mlt_image_opengl:
case mlt_image_none:
fprintf( stderr, "Invalid format...\n" );
break;
static inline void convert_image( uint8_t *out, uint8_t *in, int out_fmt, int in_fmt, int width, int height )
{
- if ( in_fmt == PIX_FMT_YUV420P && out_fmt == PIX_FMT_YUV422 )
- {
- register int i, j;
- register int half = width >> 1;
- register uint8_t *Y = in;
- register uint8_t *U = Y + width * height;
- register uint8_t *V = U + width * height / 2;
- register uint8_t *d = out;
- register uint8_t *y, *u, *v;
-
- i = height >> 1;
- while ( i -- )
- {
- y = Y;
- u = U;
- v = V;
- j = half;
- while ( j -- )
- {
- *d ++ = *y ++;
- *d ++ = *u ++;
- *d ++ = *y ++;
- *d ++ = *v ++;
- }
-
- Y += width;
- y = Y;
- u = U;
- v = V;
- j = half;
- while ( j -- )
- {
- *d ++ = *y ++;
- *d ++ = *u ++;
- *d ++ = *y ++;
- *d ++ = *v ++;
- }
-
- Y += width;
- U += width / 2;
- V += width / 2;
- }
- }
- else
- {
- AVPicture input;
- AVPicture output;
- avpicture_fill( &output, out, out_fmt, width, height );
- avpicture_fill( &input, in, in_fmt, width, height );
- img_convert( &output, out_fmt, &input, in_fmt, width, 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 :-).
error = mlt_frame_get_image( this, image, format, width, height, 0 );
- if ( error == 0 && *format != output_format )
+ 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;
}
projects / melted / blobdiff