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fix up im_incheck() and friends

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sorted out, moved to vips_
This commit is contained in:
John Cupitt 2011-03-25 14:48:28 +00:00
parent 842d2e1b16
commit 11966af809
7 changed files with 427 additions and 488 deletions
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8
libvips/include/vips/check.h
View File

@ -36,14 +36,6 @@
extern "C" {
#endif /*__cplusplus*/
int im_rwcheck( VipsImage *im );
int im_iocheck( VipsImage *in, VipsImage *out );
int im_incheck( VipsImage *im );
int im_outcheck( VipsImage *im );
int im_piocheck( VipsImage *in, VipsImage *out );
int im_pincheck( VipsImage *im );
int im_poutcheck( VipsImage *im );
int im_check_uncoded( const char *domain, VipsImage *im );
int im_check_coding_known( const char *domain, VipsImage *im );
int im_check_coding_labq( const char *domain, VipsImage *im );

6
libvips/include/vips/image.h
View File

@ -368,6 +368,12 @@ gboolean vips_image_ispartial( VipsImage *image );
int vips_image_write_line( VipsImage *image, int ypos, PEL *linebuffer );
int vips_image_wio_input( VipsImage *image );
int vips_image_wio_output( VipsImage *image );
int vips_image_inplace( VipsImage *image );
int vips_image_pio_input( VipsImage *image );
int vips_image_pio_output( VipsImage *image );
#ifdef __cplusplus
}
#endif /*__cplusplus*/

9
libvips/include/vips/vips7compat.h
View File

@ -307,6 +307,15 @@ VipsDemandStyle im_char2dhint( const char *str );
#define im_free vips_free
#define im_strdup vips_strdup
#define im_incheck vips_image_wio_input
#define im_outcheck vips_image_wio_output
#define im_rwcheck vips_image_inplace
#define im_pincheck vips_image_pio_input
#define im_poutcheck vips_image_pio_output
#define im_iocheck( I, O ) (im_incheck( I ) || im_outcheck( O ))
#define im_piocheck( I, O ) (im_pincheck( I ) || im_poutcheck( O ))
/* Buffer processing.
*/
typedef void (*im_wrapone_fn)( void *in, void *out, int width,

512
libvips/iofuncs/check.c
View File

@ -1,4 +1,4 @@
/* check IMAGEs in various ways
/* check VipsImages in various ways
*
* im_iocheck()
* Copyright: Nicos Dessipris
@ -40,6 +40,8 @@
* - all the above rolled into this file
* - plus chunks of predicate.c
* - gtkdoc comments
* 25/3/11
* - move to vips_ namespace
*/
/*
@ -63,8 +65,7 @@
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
@ -100,462 +101,21 @@
* @see_also: <link linkend="libvips-imagE">image</link>
* @include: vips/vips.h
*
* These functions perform simple checks on an #IMAGE, or indicate that you
* intend to use an #IMAGE in a certain way.
* These functions perform simple checks on an #VipsImage, or indicate that you
* intend to use an #VipsImage in a certain way.
*
* im_incheck(), im_pincheck() and friends indicate the image IO style you
* intend to use, transforming the underlying #IMAGE structure if
* vips_incheck(), vips_pincheck() and friends indicate the image IO style you
* intend to use, transforming the underlying #VipsImage structure if
* necessary.
*
* im_check_mono() and friends and convenience functions that test an #IMAGE
* vips_check_mono() and friends and convenience functions that test an
* #VipsImage
* for having various properties
* and signal an error if the condition is not met. They are useful for
* writing image processing operations which can only work on certain types of
* image.
*/
/* Convert a partial to a setbuf.
*/
static int
convert_ptob( IMAGE *im )
{
IMAGE *t1;
/* Change to VIPS_IMAGE_SETBUF. First, make a memory buffer and copy
* into that.
*/
if( !(t1 = vips_image_new( "t" )) )
return( -1 );
if( im_copy( im, t1 ) ) {
g_object_unref( t1 );
return( -1 );
}
/* Copy new stuff in. We can't im__close( im ) and free stuff, as this
* would kill of lots of regions and cause dangling pointers
* elsewhere.
*/
im->dtype = VIPS_IMAGE_SETBUF;
im->data = t1->data;
t1->data = NULL;
/* Close temp image.
*/
g_object_unref( t1 );
return( 0 );
}
/* Convert an openin to a mmapin.
*/
static int
convert_otom( IMAGE *im )
{
/* just mmap() the whole thing.
*/
if( vips_mapfile( im ) )
return( -1 );
im->data = im->baseaddr + im->sizeof_header;
im->dtype = VIPS_IMAGE_MMAPIN;
return( 0 );
}
/**
* im_incheck:
* @im: image to check
*
* Check that an image is readable via the VIPS_IMAGE_ADDR() macro. If it isn't,
* try to transform it so that VIPS_IMAGE_ADDR() can work.
*
* See also: im_outcheck(), im_pincheck(), im_rwcheck(), VIPS_IMAGE_ADDR().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_incheck( IMAGE *im )
{
g_assert( vips_object_sanity( VIPS_OBJECT( im ) ) );
#ifdef DEBUG_IO
printf( "im_incheck: old-style input for %s\n", im->filename );
#endif/*DEBUG_IO*/
switch( im->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Should have been written to.
*/
if( !im->data ) {
vips_error( "im_incheck",
"%s", _( "no image data" ) );
return( -1 );
}
break;
case VIPS_IMAGE_MMAPIN:
case VIPS_IMAGE_MMAPINRW:
/* Can read from all these, in principle anyway.
*/
break;
case VIPS_IMAGE_PARTIAL:
#ifdef DEBUG_IO
printf( "im_incheck: converting partial image to WIO\n" );
#endif/*DEBUG_IO*/
/* Change to a setbuf, so our caller can use it.
*/
if( convert_ptob( im ) )
return( -1 );
break;
case VIPS_IMAGE_OPENIN:
#ifdef DEBUG_IO
printf( "im_incheck: converting openin image for old-style input\n" );
#endif/*DEBUG_IO*/
/* Change to a MMAPIN.
*/
if( convert_otom( im ) )
return( -1 );
break;
case VIPS_IMAGE_OPENOUT:
/* Close file down and reopen as input. I guess this will only
* work for vips files?
*/
#ifdef DEBUG_IO
printf( "im_incheck: auto-rewind of %s\n", im->filename );
#endif/*DEBUG_IO*/
/* Free any resources the image holds and reset to a base
* state.
*/
vips_object_rewind( VIPS_OBJECT( im ) );
/* And reopen .. recurse to get a mmaped image.
*/
g_object_set( im,
"mode", "r",
NULL );
if( vips_object_build( VIPS_OBJECT( im ) ) ||
im_incheck( im ) ) {
vips_error( "im_incheck",
_( "auto-rewind for %s failed" ),
im->filename );
return( -1 );
}
break;
default:
vips_error( "im_incheck",
"%s", _( "image not readable" ) );
return( -1 );
}
return( 0 );
}
/**
* im_outcheck:
* @im: image to check
*
* Check that an image is writeable by im_writeline(). If it isn't,
* try to transform it so that im_writeline() can work.
*
* Set the image properties (like size, type and so on), then call
* im_setupout(), then call im_writeline() for each scan line.
*
* See also: im_incheck(), im_poutcheck().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_outcheck( IMAGE *im )
{
#ifdef DEBUG_IO
printf( "im_outcheck: old-style output for %s\n", im->filename );
#endif/*DEBUG_IO*/
switch( im->dtype ) {
case VIPS_IMAGE_PARTIAL:
/* Make sure nothing is attached.
*/
if( im->generate ) {
vips_error( "im_outcheck",
"%s", _( "image already written" ) );
return( -1 );
}
/* Cannot do old-style write to PARTIAL. Turn to SETBUF.
*/
im->dtype = VIPS_IMAGE_SETBUF;
/* Fall through to SETBUF case.
*/
case VIPS_IMAGE_SETBUF:
/* Check that it has not been im_setupout().
*/
if( im->data ) {
vips_error( "im_outcheck",
"%s", _( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_OPENOUT:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Can write to this ok.
*/
break;
default:
vips_error( "im_outcheck",
"%s", _( "image not writeable" ) );
return( -1 );
}
return( 0 );
}
/**
* im_iocheck:
* @in: input image
* @out: output image
*
* A convenience function to check a pair of images for IO via VIPS_IMAGE_ADDR()
* and im_writeline().
*
* See also: im_incheck(), im_outcheck().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_iocheck( IMAGE *in, IMAGE *out )
{
return( im_incheck( in ) || im_outcheck( out ) );
}
/**
* im_rwcheck:
* @im: image to make read-write
*
* Gets an image ready for an in-place operation, such as im_insertplace().
* Operations like this both read and write with VIPS_IMAGE_ADDR().
*
* See also: im_insertplace(), im_incheck().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_rwcheck( IMAGE *im )
{
/* Do an im_incheck(). This will rewind im_openout() files, and
* generate im_partial() files.
*/
if( im_incheck( im ) ) {
vips_error( "im_rwcheck",
"%s", _( "unable to rewind file" ) );
return( -1 );
}
/* Look at the type.
*/
switch( im->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
case VIPS_IMAGE_MMAPINRW:
/* No action necessary.
*/
break;
case VIPS_IMAGE_MMAPIN:
/* Try to remap read-write.
*/
if( vips_remapfilerw( im ) )
return( -1 );
break;
default:
vips_error( "im_rwcheck",
"%s", _( "bad file type" ) );
return( -1 );
}
return( 0 );
}
/**
* im_pincheck:
* @im: image to check
*
* Check that an image is readable with im_prepare() and friends. If it isn't,
* try to transform the image so that im_prepare() can work.
*
* See also: im_incheck(), im_poutcheck(), im_prepare().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_pincheck( IMAGE *im )
{
g_assert( vips_object_sanity( VIPS_OBJECT( im ) ) );
#ifdef DEBUG_IO
printf( "im_pincheck: enabling partial input for %s\n", im->filename );
#endif /*DEBUG_IO*/
switch( im->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Should have been written to.
*/
if( !im->data ) {
vips_error( "im_pincheck", "%s", _( "no image data" ) );
return( -1 );
}
/* Should be no generate functions now.
*/
im->start = NULL;
im->generate = NULL;
im->stop = NULL;
break;
case VIPS_IMAGE_PARTIAL:
/* Should have had generate functions attached.
*/
if( !im->generate ) {
vips_error( "im_pincheck", "%s", _( "no image data" ) );
return( -1 );
}
break;
case VIPS_IMAGE_MMAPIN:
case VIPS_IMAGE_MMAPINRW:
case VIPS_IMAGE_OPENIN:
break;
case VIPS_IMAGE_OPENOUT:
/* Close file down and reopen as im_mmapin.
*/
#ifdef DEBUG_IO
printf( "im_pincheck: auto-rewind of %s\n", im->filename );
#endif/*DEBUG_IO*/
/* Free any resources the image holds and reset to a base
* state.
*/
vips_object_rewind( VIPS_OBJECT( im ) );
g_object_set( im,
"mode", "r",
NULL );
if( vips_object_build( VIPS_OBJECT( im ) ) ) {
vips_error( "im_pincheck",
_( "auto-rewind for %s failed" ),
im->filename );
return( -1 );
}
break;
default:
vips_error( "im_pincheck", "%s", _( "image not readable" ) );
return( -1 );
}
return( 0 );
}
/**
* im_poutcheck:
* @im: image to check
*
* Check that an image is writeable with vips_image_generate(). If it isn't,
* try to transform the image so that vips_image_generate() can work.
*
* See also: im_incheck(), im_poutcheck(), vips_image_generate().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_poutcheck( IMAGE *im )
{
if( !im ) {
vips_error( "im_poutcheck", "%s", _( "null image descriptor" ) );
return( -1 );
}
#ifdef DEBUG_IO
printf( "im_pincheck: enabling partial output for %s\n", im->filename );
#endif /*DEBUG_IO*/
switch( im->dtype ) {
case VIPS_IMAGE_SETBUF:
/* Check that it has not been im_setupout().
*/
if( im->data ) {
vips_error( "im_poutcheck", "%s",
_( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_PARTIAL:
/* Make sure nothing is attached.
*/
if( im->generate ) {
vips_error( "im_poutcheck", "%s",
_( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_OPENOUT:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Okeydoke. Not much checking here.
*/
break;
default:
vips_error( "im_poutcheck", "%s", _( "image not writeable" ) );
return( -1 );
}
return( 0 );
}
/**
* im_piocheck:
* @in: input image
* @out: output image
*
* A convenience function to check a pair of images for IO via
* vips_region_prepare() and vips_image_generate().
*
* See also: im_pincheck(), im_poutcheck().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
im_piocheck( IMAGE *in, IMAGE *out )
{
return( im_pincheck( in ) || im_poutcheck( out ) );
}
/**
* im_check_uncoded:
* @domain: the originating domain for the error message
@ -570,7 +130,7 @@ im_piocheck( IMAGE *in, IMAGE *out )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_uncoded( const char *domain, IMAGE *im )
im_check_uncoded( const char *domain, VipsImage *im )
{
if( im->Coding != VIPS_CODING_NONE ) {
vips_error( domain, "%s", _( "image must be uncoded" ) );
@ -594,7 +154,7 @@ im_check_uncoded( const char *domain, IMAGE *im )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_coding_noneorlabq( const char *domain, IMAGE *im )
im_check_coding_noneorlabq( const char *domain, VipsImage *im )
{
/* These all have codings that extract/ifthenelse/etc can ignore.
*/
@ -622,7 +182,7 @@ im_check_coding_noneorlabq( const char *domain, IMAGE *im )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_coding_known( const char *domain, IMAGE *im )
im_check_coding_known( const char *domain, VipsImage *im )
{
/* These all have codings that extract/ifthenelse/etc can ignore.
*/
@ -650,7 +210,7 @@ im_check_coding_known( const char *domain, IMAGE *im )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_coding_rad( const char *domain, IMAGE *im )
im_check_coding_rad( const char *domain, VipsImage *im )
{
if( im->Coding != VIPS_CODING_RAD ||
im->BandFmt != VIPS_FORMAT_UCHAR ||
@ -676,7 +236,7 @@ im_check_coding_rad( const char *domain, IMAGE *im )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_coding_labq( const char *domain, IMAGE *im )
im_check_coding_labq( const char *domain, VipsImage *im )
{
if( im->Coding != VIPS_CODING_LABQ ||
im->BandFmt != VIPS_FORMAT_UCHAR ||
@ -702,7 +262,7 @@ im_check_coding_labq( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_mono( const char *domain, IMAGE *im )
im_check_mono( const char *domain, VipsImage *im )
{
if( im->Bands != 1 ) {
vips_error( domain, "%s", _( "image must one band" ) );
@ -727,7 +287,7 @@ im_check_mono( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_bands( const char *domain, IMAGE *im, int bands )
im_check_bands( const char *domain, VipsImage *im, int bands )
{
if( im->Bands != bands ) {
vips_error( domain, _( "image must have %d bands" ), bands );
@ -751,7 +311,7 @@ im_check_bands( const char *domain, IMAGE *im, int bands )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_bands_1or3( const char *domain, IMAGE *im )
im_check_bands_1or3( const char *domain, VipsImage *im )
{
if( im->Bands != 1 && im->Bands != 3 ) {
vips_error( domain, "%s",
@ -778,7 +338,7 @@ im_check_bands_1or3( const char *domain, IMAGE *im )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_bands_1orn( const char *domain, IMAGE *im1, IMAGE *im2 )
im_check_bands_1orn( const char *domain, VipsImage *im1, VipsImage *im2 )
{
if( im1->Bands != im2->Bands &&
(im1->Bands != 1 && im2->Bands != 1) ) {
@ -807,7 +367,7 @@ im_check_bands_1orn( const char *domain, IMAGE *im1, IMAGE *im2 )
* Returns: 0 on OK, or -1 on error.
*/
int
im_check_bands_1orn_unary( const char *domain, IMAGE *im, int n )
im_check_bands_1orn_unary( const char *domain, VipsImage *im, int n )
{
if( im->Bands != 1 && im->Bands != n ) {
vips_error( domain, _( "image must have 1 or %d bands" ), n );
@ -831,7 +391,7 @@ im_check_bands_1orn_unary( const char *domain, IMAGE *im, int n )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_noncomplex( const char *domain, IMAGE *im )
im_check_noncomplex( const char *domain, VipsImage *im )
{
if( vips_bandfmt_iscomplex( im->BandFmt ) ) {
vips_error( domain, "%s", _( "image must be non-complex" ) );
@ -855,7 +415,7 @@ im_check_noncomplex( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_complex( const char *domain, IMAGE *im )
im_check_complex( const char *domain, VipsImage *im )
{
if( !vips_bandfmt_iscomplex( im->BandFmt ) ) {
vips_error( domain, "%s", _( "image must be complex" ) );
@ -880,7 +440,7 @@ im_check_complex( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_format( const char *domain, IMAGE *im, VipsBandFormat fmt )
im_check_format( const char *domain, VipsImage *im, VipsBandFormat fmt )
{
if( im->BandFmt != fmt ) {
vips_error( domain,
@ -906,7 +466,7 @@ im_check_format( const char *domain, IMAGE *im, VipsBandFormat fmt )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_int( const char *domain, IMAGE *im )
im_check_int( const char *domain, VipsImage *im )
{
if( !vips_bandfmt_isint( im->BandFmt ) ) {
vips_error( domain, "%s", _( "image must be integer" ) );
@ -930,7 +490,7 @@ im_check_int( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_uint( const char *domain, IMAGE *im )
im_check_uint( const char *domain, VipsImage *im )
{
if( !vips_bandfmt_isuint( im->BandFmt ) ) {
vips_error( domain, "%s", _( "image must be unsigned integer" ) );
@ -954,7 +514,7 @@ im_check_uint( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_8or16( const char *domain, IMAGE *im )
im_check_8or16( const char *domain, VipsImage *im )
{
if( im->BandFmt != VIPS_FORMAT_UCHAR &&
im->BandFmt != VIPS_FORMAT_USHORT &&
@ -983,7 +543,7 @@ im_check_8or16( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_u8or16( const char *domain, IMAGE *im )
im_check_u8or16( const char *domain, VipsImage *im )
{
if( im->BandFmt != VIPS_FORMAT_UCHAR &&
im->BandFmt != VIPS_FORMAT_USHORT ) {
@ -1008,7 +568,7 @@ im_check_u8or16( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_u8or16orf( const char *domain, IMAGE *im )
im_check_u8or16orf( const char *domain, VipsImage *im )
{
if( im->BandFmt != VIPS_FORMAT_UCHAR &&
im->BandFmt != VIPS_FORMAT_USHORT &&
@ -1035,7 +595,7 @@ im_check_u8or16orf( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_uintorf( const char *domain, IMAGE *im )
im_check_uintorf( const char *domain, VipsImage *im )
{
if( im->BandFmt != VIPS_FORMAT_UCHAR &&
im->BandFmt != VIPS_FORMAT_USHORT &&
@ -1064,7 +624,7 @@ im_check_uintorf( const char *domain, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_size_same( const char *domain, IMAGE *im1, IMAGE *im2 )
im_check_size_same( const char *domain, VipsImage *im1, VipsImage *im2 )
{
if( im1->Xsize != im2->Xsize || im1->Ysize != im2->Ysize ) {
vips_error( domain, "%s", _( "images must match in size" ) );
@ -1089,7 +649,7 @@ im_check_size_same( const char *domain, IMAGE *im1, IMAGE *im2 )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_bands_same( const char *domain, IMAGE *im1, IMAGE *im2 )
im_check_bands_same( const char *domain, VipsImage *im1, VipsImage *im2 )
{
if( im1->Bands != im2->Bands ) {
vips_error( domain, "%s",
@ -1116,7 +676,7 @@ im_check_bands_same( const char *domain, IMAGE *im1, IMAGE *im2 )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_bandno( const char *domain, IMAGE *im, int bandno )
im_check_bandno( const char *domain, VipsImage *im, int bandno )
{
if( bandno < -1 ||
bandno > im->Bands - 1 ) {
@ -1143,7 +703,7 @@ im_check_bandno( const char *domain, IMAGE *im, int bandno )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_format_same( const char *domain, IMAGE *im1, IMAGE *im2 )
im_check_format_same( const char *domain, VipsImage *im1, VipsImage *im2 )
{
if( im1->BandFmt != im2->BandFmt ) {
vips_error( domain, "%s",
@ -1169,7 +729,7 @@ im_check_format_same( const char *domain, IMAGE *im1, IMAGE *im2 )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_coding_same( const char *domain, IMAGE *im1, IMAGE *im2 )
im_check_coding_same( const char *domain, VipsImage *im1, VipsImage *im2 )
{
if( im1->Coding != im2->Coding ) {
vips_error( domain, "%s",
@ -1194,7 +754,7 @@ im_check_coding_same( const char *domain, IMAGE *im1, IMAGE *im2 )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_vector( const char *domain, int n, IMAGE *im )
im_check_vector( const char *domain, int n, VipsImage *im )
{
if( n != 1 && im->Bands != 1 && n != im->Bands ) {
vips_error( domain,
@ -1219,7 +779,7 @@ im_check_vector( const char *domain, int n, IMAGE *im )
* Returns: 0 if OK, -1 otherwise.
*/
int
im_check_hist( const char *domain, IMAGE *im )
im_check_hist( const char *domain, VipsImage *im )
{
if( im->Xsize != 1 && im->Ysize != 1 ) {
vips_error( domain, "%s",

371
libvips/iofuncs/image.c
View File

@ -729,7 +729,7 @@ open_lazy_start( VipsImage *out, void *a, void *dummy )
if( !lazy->real ) {
if( !(lazy->real = lazy_real_image( lazy )) ||
lazy->format->load( lazy->filename, lazy->real ) ||
im_pincheck( lazy->real ) ) {
vips_image_pio_input( lazy->real ) ) {
VIPS_UNREF( lazy->real );
return( NULL );
}
@ -1928,4 +1928,373 @@ vips_image_write_line( VipsImage *image, int ypos, PEL *linebuffer )
return( 0 );
}
/* Rewind an output file.
*/
static int
vips_image_rewind_output( VipsImage *image )
{
#ifdef DEBUG_IO
printf( "vips_image_rewind_output: %s\n", image->filename );
#endif/*DEBUG_IO*/
/* Free any resources the image holds and reset to a base
* state.
*/
vips_object_rewind( VIPS_OBJECT( image ) );
/* And reopen .. recurse to get a mmaped image.
*/
g_object_set( image,
"mode", "r",
NULL );
if( vips_object_build( VIPS_OBJECT( image ) ) ) {
vips_error( "VipsImage",
_( "auto-rewind for %s failed" ),
image->filename );
return( -1 );
}
return( 0 );
}
/**
* vips_image_wio_input:
* @image: image to transform
*
* Check that an image is readable via the VIPS_IMAGE_ADDR() macro, that is,
* that the entire image is in memory and all pixels can be read with
* VIPS_IMAGE_ADDR().
*
* If it
* isn't, try to transform it so that VIPS_IMAGE_ADDR() can work.
*
* See also: vips_image_wio_output(), vips_image_pio_input(),
* vips_image_inplace(), VIPS_IMAGE_ADDR().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
vips_image_wio_input( VipsImage *image )
{
VipsImage *t1;
g_assert( vips_object_sanity( VIPS_OBJECT( image ) ) );
#ifdef DEBUG_IO
printf( "vips_image_wio_input: wio input for %s\n",
image->filename );
#endif/*DEBUG_IO*/
switch( image->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Should have been written to.
*/
if( !image->data ) {
vips_error( "vips_image_wio_input",
"%s", _( "no image data" ) );
return( -1 );
}
break;
case VIPS_IMAGE_MMAPIN:
case VIPS_IMAGE_MMAPINRW:
/* Can read from all these, in principle anyway.
*/
break;
case VIPS_IMAGE_PARTIAL:
#ifdef DEBUG_IO
printf( "im_incheck: converting partial image to WIO\n" );
#endif/*DEBUG_IO*/
/* Change to VIPS_IMAGE_SETBUF. First, make a memory
* buffer and copy into that.
*/
if( !(t1 = vips_image_new( "t" )) )
return( -1 );
if( im_copy( image, t1 ) ) {
g_object_unref( t1 );
return( -1 );
}
/* Copy new stuff in. We can't unref and free stuff, as this
* would kill of lots of regions and cause dangling pointers
* elsewhere.
*/
image->dtype = VIPS_IMAGE_SETBUF;
image->data = t1->data;
t1->data = NULL;
/* Close temp image.
*/
g_object_unref( t1 );
break;
case VIPS_IMAGE_OPENIN:
#ifdef DEBUG_IO
printf( "im_incheck: converting openin image for wio input\n" );
#endif/*DEBUG_IO*/
/* just mmap() the whole thing.
*/
if( vips_mapfile( image ) )
return( -1 );
image->data = image->baseaddr + image->sizeof_header;
image->dtype = VIPS_IMAGE_MMAPIN;
break;
case VIPS_IMAGE_OPENOUT:
/* Close file down and reopen as input. I guess this will only
* work for vips files?
*/
if( vips_image_rewind_output( image ) ||
vips_image_wio_input( image ) )
return( -1 );
break;
default:
vips_error( "vips_image_wio_input",
"%s", _( "image not readable" ) );
return( -1 );
}
return( 0 );
}
/**
* vips_image_wio_output:
* @image: image to check
*
* Check that an image is writeable by vips_image_write_line(). If it isn't,
* try to transform it so that vips_image_write_line() can work.
*
* See also: vips_image_wio_input().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
vips_image_wio_output( VipsImage *image )
{
#ifdef DEBUG_IO
printf( "vips_image_wio_output: WIO output for %s\n",
image->filename );
#endif/*DEBUG_IO*/
switch( image->dtype ) {
case VIPS_IMAGE_PARTIAL:
/* Make sure nothing is attached.
*/
if( image->generate ) {
vips_error( "vips_image_wio_output",
"%s", _( "image already written" ) );
return( -1 );
}
/* Cannot do old-style write to PARTIAL. Turn to SETBUF.
*/
image->dtype = VIPS_IMAGE_SETBUF;
/* Fall through to SETBUF case.
*/
case VIPS_IMAGE_SETBUF:
if( image->data ) {
vips_error( "vips_image_wio_output",
"%s", _( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_OPENOUT:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Can write to this ok.
*/
break;
default:
vips_error( "vips_image_wio_output",
"%s", _( "image not writeable" ) );
return( -1 );
}
return( 0 );
}
/**
* vips_image_inplace:
* @image: image to make read-write
*
* Gets @image ready for an in-place operation, such as im_insertplace().
* Operations like this both read and write with VIPS_IMAGE_ADDR().
*
* See also: im_insertplace(), vips_image_wio_input().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
vips_image_inplace( VipsImage *image )
{
/* Do an vips_image_wio_input(). This will rewind, generate, etc.
*/
if( vips_image_wio_input( image ) )
return( -1 );
/* Look at the type.
*/
switch( image->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
case VIPS_IMAGE_MMAPINRW:
/* No action necessary.
*/
break;
case VIPS_IMAGE_MMAPIN:
/* Try to remap read-write.
*/
if( vips_remapfilerw( image ) )
return( -1 );
break;
default:
vips_error( "vips_image_inplace",
"%s", _( "bad file type" ) );
return( -1 );
}
return( 0 );
}
/**
* vips_image_pio_input:
* @image: image to check
*
* Check that an image is readable with vips_region_prepare() and friends.
* If it isn't, try to transform the image so that vips_region_prepare() can
* work.
*
* See also: vips_image_pio_output(), vips_region_prepare().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
vips_image_pio_input( VipsImage *image )
{
g_assert( vips_object_sanity( VIPS_OBJECT( image ) ) );
#ifdef DEBUG_IO
printf( "vips_image_pio_input: enabling partial input for %s\n",
image->filename );
#endif /*DEBUG_IO*/
switch( image->dtype ) {
case VIPS_IMAGE_SETBUF:
case VIPS_IMAGE_SETBUF_FOREIGN:
/* Should have been written to.
*/
if( !image->data ) {
vips_error( "vips_image_pio_input",
"%s", _( "no image data" ) );
return( -1 );
}
/* Should be no generate functions now.
*/
image->start = NULL;
image->generate = NULL;
image->stop = NULL;
break;
case VIPS_IMAGE_PARTIAL:
/* Should have had generate functions attached.
*/
if( !image->generate ) {
vips_error( "vips_image_pio_input",
"%s", _( "no image data" ) );
return( -1 );
}
break;
case VIPS_IMAGE_MMAPIN:
case VIPS_IMAGE_MMAPINRW:
case VIPS_IMAGE_OPENIN:
break;
case VIPS_IMAGE_OPENOUT:
/* Free any resources the image holds and reset to a base
* state.
*/
if( vips_image_rewind_output( image ) )
return( -1 );
break;
default:
vips_error( "im_pincheck", "%s", _( "image not readable" ) );
return( -1 );
}
return( 0 );
}
/**
* vips_image_pio_output:
* @image: image to check
*
* Check that an image is writeable with vips_image_generate(). If it isn't,
* try to transform the image so that vips_image_generate() can work.
*
* See also: vips_image_pio_input().
*
* Returns: 0 on succeess, or -1 on error.
*/
int
vips_image_pio_output( VipsImage *image )
{
#ifdef DEBUG_IO
printf( "vips_image_pio_output: enabling partial output for %s\n",
image->filename );
#endif /*DEBUG_IO*/
switch( image->dtype ) {
case VIPS_IMAGE_SETBUF:
if( image->data ) {
vips_error( "im_poutcheck", "%s",
_( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_PARTIAL:
if( image->generate ) {
vips_error( "im_poutcheck", "%s",
_( "image already written" ) );
return( -1 );
}
break;
case VIPS_IMAGE_OPENOUT:
case VIPS_IMAGE_SETBUF_FOREIGN:
break;
default:
vips_error( "vips_image_pio_output",
"%s", _( "image not writeable" ) );
return( -1 );
}
return( 0 );
}

5
libvips/iofuncs/sinkscreen.c
View File

@ -1087,12 +1087,13 @@ vips_sink_screen( VipsImage *in, VipsImage *out, VipsImage *mask,
return( -1 );
}
if( im_piocheck( in, out ) ||
if( vips_image_pio_input( in ) ||
vips_image_pio_output( out ) ||
vips_image_copy_fields( out, in ) ||
vips_demand_hint( out, VIPS_DEMAND_STYLE_SMALLTILE, in, NULL ) )
return( -1 );
if( mask ) {
if( im_poutcheck( mask ) ||
if( vips_image_pio_output( mask ) ||
vips_image_copy_fields( mask, in ) ||
vips_demand_hint( mask,
VIPS_DEMAND_STYLE_SMALLTILE, in, NULL ) )

4
libvips/iofuncs/vips7compat.c
View File

@ -378,9 +378,11 @@ im_wrapmany( IMAGE **in, IMAGE *out, im_wrapmany_fn fn, void *a, void *b )
/* Check io style.
*/
if( im_piocheck( in[i], out ) )
if( vips_image_pio_input( in[i] ) )
return( -1 );
}
if( vips_image_pio_output( out ) )
return( -1 );
/* Hint demand style. Being a buffer processor, we are happiest with
* thin strips.