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oop jpeg thumbnail

This commit is contained in:
John Cupitt 2012-06-19 14:48:32 +01:00
parent 400a40ea28
commit c7059af753
1 changed files with 18 additions and 12 deletions
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30
tools/vipsthumbnail.c
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@ -315,7 +315,7 @@ make_thumbnail_name( const char *filename )
}
static int
thumbnail2( const char *filename )
thumbnail2( const char *filename, int shrink )
{
IMAGE *in;
IMAGE *out;
@ -324,10 +324,19 @@ thumbnail2( const char *filename )
/* Open in sequential mode.
*/
if( vips_foreign_load( filename, &in,
"sequential", TRUE,
NULL ) )
return( -1 );
if( shrink > 1 ) {
if( vips_foreign_load( filename, &in,
"sequential", TRUE,
"shrink", shrink,
NULL ) )
return( -1 );
}
else {
if( vips_foreign_load( filename, &in,
"sequential", TRUE,
NULL ) )
return( -1 );
}
tn_filename = make_thumbnail_name( filename );
if( !(out = im_open( tn_filename, "w" )) ) {
@ -354,6 +363,7 @@ thumbnail( const char *filename )
{
VipsFormatClass *format;
char buf[FILENAME_MAX];
int shrink;
if( verbose )
printf( "thumbnailing %s\n", filename );
@ -365,9 +375,9 @@ thumbnail( const char *filename )
printf( "detected format as %s\n",
VIPS_OBJECT_CLASS( format )->nickname );
shrink = 1;
if( strcmp( VIPS_OBJECT_CLASS( format )->nickname, "jpeg" ) == 0 ) {
IMAGE *im;
int shrink;
/* This will just read in the header and is quick.
*/
@ -385,15 +395,11 @@ thumbnail( const char *filename )
else
shrink = 1;
im_snprintf( buf, FILENAME_MAX, "%s:%d", filename, shrink );
if( verbose )
printf( "using fast jpeg shrink, factor %d\n", shrink );
return( thumbnail2( buf ) );
}
else
return( thumbnail2( filename ) );
return( thumbnail2( filename, shrink ) );
}
int