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get im_system_image() working again

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chop stuff about to get system image working again.
This commit is contained in:
John Cupitt 2011-06-16 13:54:13 +01:00
parent 6a582ae1a9
commit 3920f5dc7e
7 changed files with 109 additions and 43 deletions
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1
TODO
View File

@ -1,5 +1,4 @@
- revisit orc conv
use an 8.8 accumulator ... build the scale into the 8.8 coeffs ... no div at

14
libvips/conversion/im_system_image.c
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@ -75,7 +75,9 @@ system_image( IMAGE *im,
if( !vips_buf_appends( &buf, line ) )
break;
result = pclose( fp );
if( (result = pclose( fp )) )
im_error( "im_system_image",
_( "command failed: \"%s\"" ), cmd_format );
if( log )
*log = im_strdup( NULL, vips_buf_all( &buf ) );
@ -152,6 +154,7 @@ im_system_image( IMAGE *im,
if( system_image( im, in_image, out_name, cmd_format, log ) ) {
im_close( in_image );
g_free( out_name );
g_unlink( out_name );
return( NULL );
}
@ -159,18 +162,13 @@ im_system_image( IMAGE *im,
if( !(out = im_open( out_name, "r" )) ) {
g_free( out_name );
return( NULL );
}
if( im_add_postclose_callback( out,
(im_callback_fn) unlink, out->filename, NULL ) ) {
g_free( out_name );
im_close( out );
g_unlink( out_name );
return( NULL );
}
g_free( out_name );
vips_image_set_delete_on_close( out, TRUE );
return( out );
}

14
libvips/include/vips/image.h
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@ -197,7 +197,7 @@ typedef struct _VipsImage {
size_t length; /* size of mmap area */
guint32 magic; /* magic from header, endian-ness of image */
/* Partial image stuff. All private! All these fields are initialised
/* Partial image stuff. All these fields are initialised
* to NULL and ignored unless set by vips_image_generate() etc.
*/
void *(*start)(); /* user-supplied start function */
@ -264,6 +264,16 @@ typedef struct _VipsImage {
*/
gboolean hint_set;
/* Delete-on-close is hard to do with signals and callbacks since we
* really need to do this in finalize after the fd has been closed,
* but you can't emit signals then.
*
* Also keep a private copy of the filename string to be deleted,
* since image->filename will be freed in _dispose().
*/
gboolean delete_on_close;
char *delete_on_close_filename;
} VipsImage;
typedef struct _VipsImageClass {
@ -363,6 +373,8 @@ VipsImage *vips_image_new_from_file_raw( const char *filename,
int xsize, int ysize, int bands, int offset );
VipsImage *vips_image_new_from_memory( void *buffer,
int xsize, int ysize, int bands, VipsBandFormat bandfmt );
void vips_image_set_delete_on_close( VipsImage *image,
gboolean delete_on_close );
VipsImage *vips_image_new_disc_temp( const char *format );
int vips_image_write( VipsImage *image, const char *filename );

2
libvips/include/vips/object.h
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@ -160,7 +160,7 @@ typedef void *(*VipsArgumentMapFn)( VipsObject *, GParamSpec *,
VipsArgumentClass *, VipsArgumentInstance *, void *a, void *b );
void *vips_argument_map( VipsObject *object,
VipsArgumentMapFn fn, void *a, void *b );
void vips_argument_free_all( VipsObject *object );
void vips_argument_dispose_all( VipsObject *object );
/* We have to loop over an objects args in several places, and we can't always
* use vips_argument_map(), the preferred looper. Have the loop code as a

49
libvips/iofuncs/image.c
View File

@ -346,8 +346,7 @@ vips_image_finalize( GObject *gobject )
(void) vips__writehist( image );
if( close( image->fd ) == -1 )
vips_error( "VipsImage",
_( "unable to close fd for %s" ),
image->filename );
"%s", _( "unable to close fd" ) );
image->fd = -1;
}
@ -366,8 +365,15 @@ vips_image_finalize( GObject *gobject )
image->data = NULL;
}
VIPS_FREE( image->filename );
VIPS_FREE( image->mode );
if( image->delete_on_close ) {
g_assert( image->delete_on_close_filename );
VIPS_DEBUG_MSG( "vips_image_finalize: removing temp %s\n",
image->delete_on_close_filename );
g_unlink( image->delete_on_close_filename );
VIPS_FREE( image->delete_on_close_filename );
image->delete_on_close = FALSE;
}
VIPS_FREEF( g_mutex_free, image->sslock );
@ -542,7 +548,7 @@ vips_image_rewind( VipsObject *object )
char *filename;
char *mode;
/* The old values for filename and mode become the new defaults.
/* This triggers a dispose. Copy filename/mode across the dispose.
*/
filename = g_strdup( vips_image_get_filename( image ) );
mode = g_strdup( vips_image_get_mode( image ) );
@ -1454,7 +1460,7 @@ vips_image_set_kill( VipsImage *image, gboolean kill )
image->kill = kill;
}
/* Make a name for a filename-less image. Use immediately, don'#t free the
/* Make a name for a filename-less image. Use immediately, don't free the
* result.
*/
static const char *
@ -1747,12 +1753,29 @@ vips_image_new_from_memory( void *buffer,
return( image );
}
static void
vips_image_new_temp_cb( VipsImage *image )
/**
* vips_image_set_delete_on_close:
* @image: image to set
* @delete_on_close: format of file
*
* Sets the delete_on_close flag for the image. If this flag is set, when
* @image is finalized the filename held in @image->filename at the time of
* this call is unlinked.
*
* This function is clearly extremely dangerous, use with great caution.
*
* See also: vips__temp_name(), vips_image_new_disc_temp().
*/
void
vips_image_set_delete_on_close( VipsImage *image, gboolean delete_on_close )
{
g_assert( image->filename );
VIPS_DEBUG_MSG( "vips_image_set_delete_on_close: %d %s\n",
delete_on_close, image->filename );
g_unlink( image->filename );
image->delete_on_close = delete_on_close;
VIPS_FREE( image->delete_on_close_filename );
if( delete_on_close )
VIPS_SETSTR( image->delete_on_close_filename, image->filename );
}
/**
@ -1783,11 +1806,7 @@ vips_image_new_disc_temp( const char *format )
}
g_free( name );
/* Needs to be postclose so we can rewind after write without
* deleting the file.
*/
g_signal_connect( image, "postclose",
G_CALLBACK( vips_image_new_temp_cb ), NULL );
vips_image_set_delete_on_close( image, TRUE );
return( image );
}

68
libvips/iofuncs/object.c
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@ -395,27 +395,21 @@ vips_object_dispose_argument( VipsObject *object, GParamSpec *pspec,
VipsArgumentInstance *argument_instance,
void *a, void *b )
{
#ifdef DEBUG
printf( "vips_object_dispose_argument: " );
vips_object_print_name( object );
printf( ".%s\n", g_param_spec_get_name( pspec ) );
#endif /*DEBUG*/
g_assert( ((VipsArgument *) argument_class)->pspec == pspec );
g_assert( ((VipsArgument *) argument_instance)->pspec == pspec );
if( G_IS_PARAM_SPEC_STRING( pspec ) ) {
char **member = &G_STRUCT_MEMBER( char *, object,
argument_class->offset );
VIPS_FREE( *member );
}
else if( G_IS_PARAM_SPEC_OBJECT( pspec ) )
if( G_IS_PARAM_SPEC_OBJECT( pspec ) )
vips_object_clear_object( object, pspec );
else if( G_IS_PARAM_SPEC_BOXED( pspec ) ) {
gpointer *member = &G_STRUCT_MEMBER( gpointer, object,
argument_class->offset );
#ifdef DEBUG
printf( "vips_object_dispose_argument: " );
vips_object_print_name( object );
printf( ".%s\n", g_param_spec_get_name( pspec ) );
#endif /*DEBUG*/
if( *member ) {
g_boxed_free( G_PARAM_SPEC_VALUE_TYPE( pspec ),
*member );
@ -429,6 +423,48 @@ vips_object_dispose_argument( VipsObject *object, GParamSpec *pspec,
/* Free all args on this object which may be holding resources.
*/
void
vips_argument_dispose_all( VipsObject *object )
{
#ifdef DEBUG
printf( "vips_argument_dispose_all: " );
vips_object_print_name( object );
printf( "\n" );
#endif /*DEBUG*/
vips_argument_map( object, vips_object_dispose_argument, NULL, NULL );
}
/* Free any args which are holding memory.
*/
static void *
vips_object_free_argument( VipsObject *object, GParamSpec *pspec,
VipsArgumentClass *argument_class,
VipsArgumentInstance *argument_instance,
void *a, void *b )
{
g_assert( ((VipsArgument *) argument_class)->pspec == pspec );
g_assert( ((VipsArgument *) argument_instance)->pspec == pspec );
if( G_IS_PARAM_SPEC_STRING( pspec ) ) {
char **member = &G_STRUCT_MEMBER( char *, object,
argument_class->offset );
#ifdef DEBUG
printf( "vips_object_free_argument: " );
vips_object_print_name( object );
printf( ".%s\n", g_param_spec_get_name( pspec ) );
#endif /*DEBUG*/
VIPS_FREE( *member );
}
return( NULL );
}
/* Free args which hold memory. Things like strings need to be freed right at
* the end in case anyone is still using them.
*/
static void
vips_argument_free_all( VipsObject *object )
{
#ifdef DEBUG
@ -437,7 +473,7 @@ vips_argument_free_all( VipsObject *object )
printf( "\n" );
#endif /*DEBUG*/
vips_argument_map( object, vips_object_dispose_argument, NULL, NULL );
vips_argument_map( object, vips_object_free_argument, NULL, NULL );
}
static void
@ -466,7 +502,7 @@ vips_object_dispose( GObject *gobject )
/* Clear all our arguments: they may be holding refs we should drop.
*/
vips_argument_free_all( object );
vips_argument_dispose_all( object );
VIPS_FREEF( vips_argument_table_destroy, object->argument_table );
vips_object_close( object );
@ -474,6 +510,8 @@ vips_object_dispose( GObject *gobject )
G_OBJECT_CLASS( vips_object_parent_class )->dispose( gobject );
vips_object_postclose( object );
vips_argument_free_all( object );
}
static void

4
libvips/iofuncs/operation.c
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@ -359,7 +359,7 @@ vips_call( const char *operation_name, ... )
/* Build failed: junk args and back out.
*/
if( result ) {
vips_argument_free_all( VIPS_OBJECT( operation ) );
vips_argument_dispose_all( VIPS_OBJECT( operation ) );
g_object_unref( operation );
return( -1 );
@ -406,7 +406,7 @@ vips_call_split( const char *operation_name, va_list optional, ... )
/* Build failed: junk args and back out.
*/
if( result ) {
vips_argument_free_all( VIPS_OBJECT( operation ) );
vips_argument_dispose_all( VIPS_OBJECT( operation ) );
g_object_unref( operation );
return( -1 );