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more vipsimage-vipsobject hacking 

sigh
This commit is contained in:
John Cupitt 2011-02-21 17:44:31 +00:00
parent 7a704bad50
commit 20cd123caa
2 changed files with 58 additions and 44 deletions
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2
libvips/include/vips/debug.h
View File

@ -71,7 +71,7 @@ extern "C" {
void im__print_one( int n );
void im__print_all( void );
const char *im_Type2char( VipsType type );
const char *im_Type2char( VipsInterpretation type );
const char *im_BandFormat2char( VipsBandFormat fmt );
const char *im_Coding2char( VipsCoding coding );
const char *im_Compression2char( int n );

100
libvips/iofuncs/image.c
View File

@ -454,31 +454,38 @@ vips_format_is_vips( VipsFormatClass *format )
/* What we track during a delayed open.
*/
typedef struct {
VipsImage *out;
VipsImage *image;
VipsFormatClass *format;/* Read in pixels with this */
char *filename; /* Get pixels from here */
gboolean disc; /* Read via disc requested */
VipsImage *image; /* The real decompressed image */
VipsImage *real; /* The real decompressed image */
} Lazy;
static void
lazy_free_cb( Lazy *lazy )
{
VIPS_FREE( lazy->filename );
VIPS_UNREF( lazy->image );
}
static Lazy *
lazy_new( VipsImage *out, VipsFormatClass *format, gboolean disc )
lazy_new( VipsImage *image,
VipsFormatClass *format, const char *filename, gboolean disc )
{
Lazy *lazy;
if( !(lazy = VIPS_NEW( out, Lazy )) )
if( !(lazy = VIPS_NEW( image, Lazy )) )
return( NULL );
lazy->out = out;
lazy->image = image;
lazy->format = format;
lazy->filename = NULL;
lazy->disc = disc;
lazy->image = NULL;
g_signal_connect( out, "close", G_CALLBACK( lazy_free_cb ), NULL );
lazy->real = NULL;
g_signal_connect( image, "close", G_CALLBACK( lazy_free_cb ), NULL );
if( !(lazy->filename = im_strdup( NULL, filename )) )
return( NULL );
return( lazy );
}
@ -553,10 +560,19 @@ disc_threshold( void )
return( threshold );
}
static VipsImage *
lazy_image( Lazy *lazy )
size_t
vips_image_size( VipsImage *image )
{
VipsImage *image;
return( VIPS_IMAGE_SIZEOF_LINE( image ) * image->Ysize );
}
/* Make the real underlying image: either a direct disc file, or a temp file
* somewhere.
*/
static VipsImage *
lazy_real_image( Lazy *lazy )
{
VipsImage *real;
/* We open to disc if:
* - 'disc' is set
@ -564,32 +580,28 @@ lazy_image( Lazy *lazy )
* - the format does not support lazy read
* - the image will be more than a megabyte, uncompressed
*/
image = NULL;
real = NULL;
if( lazy->disc &&
disc_threshold() &&
!(vips_format_get_flags( lazy->format, lazy->out->filename ) &
VIPS_FORMAT_PARTIAL) ) {
size_t size = VIPS_IMAGE_SIZEOF_LINE( lazy->out ) *
lazy->out->Ysize;
if( size > disc_threshold() ) {
if( !(image = im__open_temp( "%s.v" )) )
!(vips_format_get_flags( lazy->format, lazy->filename ) &
VIPS_FORMAT_PARTIAL) &&
vips_image_size( lazy->image ) > disc_threshold() ) {
if( !(real = im__open_temp( "%s.v" )) )
return( NULL );
#ifdef DEBUG
printf( "lazy_image: opening to disc file \"%s\"\n",
image->filename );
real->filename );
#endif /*DEBUG*/
}
}
/* Otherwise, fall back to a "p".
*/
if( !image &&
!(image = vips_open( lazy->out->filename, "p" )) )
if( !real &&
!(real = vips_open( lazy->filename, "p" )) )
return( NULL );
return( image );
return( real );
}
/* Our start function ... do the lazy open, if necessary, and return a region
@ -599,11 +611,10 @@ static void *
open_lazy_start( VipsImage *out, void *a, void *dummy )
{
Lazy *lazy = (Lazy *) a;
const char *filename = lazy->out->filename;
if( !lazy->image ) {
if( !(lazy->image = lazy_image( lazy )) ||
lazy->format->load( filename, lazy->image ) ||
if( !(lazy->real = lazy_real_image( lazy )) ||
lazy->format->load( lazy->filename, lazy->image ) ||
im_pincheck( lazy->image ) ) {
VIPS_UNREF( lazy->image );
return( NULL );
@ -639,26 +650,26 @@ open_lazy_generate( REGION *or, void *seq, void *a, void *b )
* decoding pixels with the second OpenLazyFn until the first generate().
*/
static int
vips_open_lazy( VipsImage *out,
VipsFormatClass *format, gboolean disc, IMAGE *out )
vips_open_lazy( VipsImage *image,
VipsFormatClass *format, const char *filename, gboolean disc )
{
Lazy *lazy;
if( !(lazy = lazy_new( out, format, disc )) )
if( !(lazy = lazy_new( image, format, filename, disc )) )
return( -1 );
/* Read header fields to init the return image. THINSTRIP since this is
* probably a disc file. We can't tell yet whether we will be opening
* to memory, sadly, so we can't suggest ANY.
*/
if( format->header( out->filename, out ) ||
im_demand_hint( out, VIPS_DEMAND_STYLE_THINSTRIP, NULL ) )
if( format->header( filename, image ) ||
im_demand_hint( image, VIPS_DEMAND_STYLE_THINSTRIP, NULL ) )
return( -1 );
/* Then 'start' creates the real image and 'gen' paints 'out' with
* pixels from the real image on demand.
*/
if( im_generate( out,
if( im_generate( image,
open_lazy_start, open_lazy_generate, im_stop_one,
lazy, NULL ) )
return( -1 );
@ -697,7 +708,8 @@ vips_attach_save( VipsImage *image, int (*save_fn)(), const char *filename )
if( (sb = VIPS_NEW( image, SaveBlock )) ) {
sb->save_fn = save_fn;
sb->filename = im_strdup( image, filename );
g_signal_connect( image, "written", vips_image_save_cb, sb );
g_signal_connect( image, "written",
G_CALLBACK( vips_image_save_cb ), sb );
}
}
@ -707,7 +719,7 @@ vips_attach_save( VipsImage *image, int (*save_fn)(), const char *filename )
/* What we track during an eval.
*/
typedef struct {
IMAGE *image;
VipsImage *image;
int last_percent; /* The last %complete we displayed */
} Progress;
@ -721,9 +733,10 @@ vips_image_evalstart_cb( Progress *progress )
progress->last_percent = 0;
vips_get_tile_size( progress->im, &tile_width, &tile_height, &nlines );
vips_get_tile_size( progress->image,
&tile_width, &tile_height, &nlines );
printf( _( "%s %s: %d threads, %d x %d tiles, groups of %d scanlines" ),
g_get_prgname(), progress->im->filename,
g_get_prgname(), progress->image->filename,
im_concurrency_get(),
tile_width, tile_height, nlines );
printf( "\n" );
@ -734,15 +747,16 @@ vips_image_evalstart_cb( Progress *progress )
static int
vips_image_eval_cb( Progress *progress )
{
IMAGE *im = progress->im;
VipsImage *image = progress->image;
if( im->time->percent != progress->last_percent ) {
if( image->time->percent != progress->last_percent ) {
printf( _( "%s %s: %d%% complete" ),
g_get_prgname(), im->filename, im->time->percent );
g_get_prgname(), image->filename,
image->time->percent );
printf( "\r" );
fflush( stdout );
progress->last_percent = im->time->percent;
progress->last_percent = image->time->percent;
}
return( 0 );
@ -751,12 +765,12 @@ vips_image_eval_cb( Progress *progress )
static int
vips_image_evalend_cb( Progress *progress )
{
IMAGE *im = progress->im;
VipsImage *image = progress->image;
/* Spaces at end help to erase the %complete message we overwrite.
*/
printf( _( "%s %s: done in %ds \n" ),
g_get_prgname(), im->filename, im->time->run );
g_get_prgname(), image->filename, image->time->run );
return( 0 );
}