revise ppmload, fixing a couple of bugs
- ppmload was not setting interpretation, filename, etc. for files read via mmap - files not read via mmap were never byteswapped - some cleanups see https://github.com/libvips/libvips/issues/1916
This commit is contained in:
John Cupitt
parent
86fa9277e7
commit
b2fa1f89e8
@ -1,6 +1,7 @@
|
||||
22/12/20 start 8.10.6
|
||||
- don't seek on bad file descriptors [kleisauke]
|
||||
- check for null memory sources [kleisauke]
|
||||
- revise ppmload, fixing a couple of small bugs
|
||||
|
||||
18/12/20 started 8.10.5
|
||||
- fix potential /0 in animated webp load [lovell]
|
||||
|
||||
@ -346,6 +346,24 @@ vips_foreign_load_ppm_parse_header( VipsForeignLoadPpm *ppm )
|
||||
|
||||
ppm->have_read_header = TRUE;
|
||||
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_parse_header:\n" );
|
||||
printf( "\twidth = %d\n", ppm->width );
|
||||
printf( "\theight = %d\n", ppm->height );
|
||||
printf( "\tbands = %d\n", ppm->bands );
|
||||
printf( "\tformat = %s\n",
|
||||
vips_enum_nick( VIPS_TYPE_BAND_FORMAT,
|
||||
ppm->format ) );
|
||||
printf( "\tinterpretation = %s\n",
|
||||
vips_enum_nick( VIPS_TYPE_INTERPRETATION,
|
||||
ppm->interpretation ) );
|
||||
printf( "\tscale = %g\n", ppm->scale );
|
||||
printf( "\tmax_value = %d\n", ppm->max_value );
|
||||
printf( "\tbits = %d\n", ppm->bits );
|
||||
printf( "\tacsii = %d\n", ppm->ascii );
|
||||
printf( "\tmsb_first = %d\n", ppm->msb_first );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
@ -376,13 +394,10 @@ vips_foreign_load_ppm_get_flags( VipsForeignLoad *load )
|
||||
}
|
||||
|
||||
static void
|
||||
vips_foreign_load_ppm_set_image( VipsForeignLoadPpm *ppm, VipsImage *image )
|
||||
vips_foreign_load_ppm_set_image_metadata( VipsForeignLoadPpm *ppm,
|
||||
VipsImage *image )
|
||||
{
|
||||
vips_image_init_fields( image,
|
||||
ppm->width, ppm->height, ppm->bands, ppm->format,
|
||||
VIPS_CODING_NONE, ppm->interpretation, 1.0, 1.0 );
|
||||
|
||||
vips_image_pipelinev( image, VIPS_DEMAND_STYLE_THINSTRIP, NULL );
|
||||
image->Type = ppm->interpretation;
|
||||
|
||||
if( ppm->index == 6 ||
|
||||
ppm->index == 7 )
|
||||
@ -392,8 +407,30 @@ vips_foreign_load_ppm_set_image( VipsForeignLoadPpm *ppm, VipsImage *image )
|
||||
vips_image_set_double( image,
|
||||
"ppm-max-value", VIPS_ABS( ppm->max_value ) );
|
||||
|
||||
VIPS_SETSTR( image->filename,
|
||||
vips_connection_filename( VIPS_CONNECTION( ppm->sbuf->source ) ) );
|
||||
VIPS_SETSTR( image->filename, vips_connection_filename(
|
||||
VIPS_CONNECTION( ppm->sbuf->source ) ) );
|
||||
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_set_image: " );
|
||||
vips_object_print_summary( VIPS_OBJECT( image ) );
|
||||
#endif /*DEBUG*/
|
||||
}
|
||||
|
||||
static void
|
||||
vips_foreign_load_ppm_set_image( VipsForeignLoadPpm *ppm, VipsImage *image )
|
||||
{
|
||||
vips_image_init_fields( image,
|
||||
ppm->width, ppm->height, ppm->bands, ppm->format,
|
||||
VIPS_CODING_NONE, ppm->interpretation, 1.0, 1.0 );
|
||||
|
||||
vips_image_pipelinev( image, VIPS_DEMAND_STYLE_THINSTRIP, NULL );
|
||||
|
||||
vips_foreign_load_ppm_set_image_metadata( ppm, image );
|
||||
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_set_image: " );
|
||||
vips_object_print_summary( VIPS_OBJECT( image ) );
|
||||
#endif /*DEBUG*/
|
||||
}
|
||||
|
||||
static int
|
||||
@ -414,35 +451,34 @@ vips_foreign_load_ppm_header( VipsForeignLoad *load )
|
||||
|
||||
/* Read a ppm/pgm file using mmap().
|
||||
*/
|
||||
static int
|
||||
vips_foreign_load_ppm_map( VipsForeignLoadPpm *ppm, VipsImage *image )
|
||||
static VipsImage *
|
||||
vips_foreign_load_ppm_map( VipsForeignLoadPpm *ppm )
|
||||
{
|
||||
VipsImage **t = (VipsImage **)
|
||||
vips_object_local_array( VIPS_OBJECT( ppm ), 3 );
|
||||
|
||||
gint64 header_offset;
|
||||
size_t length;
|
||||
const void *data;
|
||||
VipsImage *out;
|
||||
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_map:\n" );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
vips_sbuf_unbuffer( ppm->sbuf );
|
||||
header_offset = vips_source_seek( ppm->source, 0, SEEK_CUR );
|
||||
data = vips_source_map( ppm->source, &length );
|
||||
if( header_offset < 0 ||
|
||||
!data )
|
||||
return( -1 );
|
||||
return( NULL );
|
||||
data += header_offset;
|
||||
length -= header_offset;
|
||||
|
||||
if( !(t[0] = vips_image_new_from_memory( data, length,
|
||||
if( !(out = vips_image_new_from_memory( data, length,
|
||||
ppm->width, ppm->height, ppm->bands, ppm->format )) )
|
||||
return( -1 );
|
||||
return( NULL );
|
||||
|
||||
if( vips__byteswap_bool( t[0], &t[1],
|
||||
vips_amiMSBfirst() != ppm->msb_first ) ||
|
||||
vips_image_write( t[1], image ) )
|
||||
return( -1 );
|
||||
vips_foreign_load_ppm_set_image_metadata( ppm, out );
|
||||
|
||||
return( 0 );
|
||||
return( out );
|
||||
}
|
||||
|
||||
static int
|
||||
@ -586,7 +622,59 @@ vips_foreign_load_ppm_generate_ascii_int( VipsRegion *or,
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
typedef int (*VipsPpmLoaderFn)( VipsForeignLoadPpm *ppm, VipsImage *image );
|
||||
static VipsImage *
|
||||
vips_foreign_load_ppm_scan( VipsForeignLoadPpm *ppm )
|
||||
{
|
||||
VipsImage **t = (VipsImage **)
|
||||
vips_object_local_array( VIPS_OBJECT( ppm ), 2 );
|
||||
|
||||
VipsImage *out;
|
||||
VipsGenerateFn generate;
|
||||
|
||||
/* What sort of read are we doing?
|
||||
*/
|
||||
if( !ppm->ascii && ppm->bits >= 8 ) {
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_source: >1 bit binary load\n" );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
generate = vips_foreign_load_ppm_generate_binary;
|
||||
|
||||
/* The binary loader does not use the buffered IO
|
||||
* object.
|
||||
*/
|
||||
vips_sbuf_unbuffer( ppm->sbuf );
|
||||
}
|
||||
else if( !ppm->ascii && ppm->bits == 1 ) {
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_source: 1-bit binary load\n" );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
generate = vips_foreign_load_ppm_generate_1bit_binary;
|
||||
}
|
||||
else if( ppm->ascii && ppm->bits == 1 ) {
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_source: 1-bit ascii load\n" );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
generate = vips_foreign_load_ppm_generate_1bit_ascii;
|
||||
}
|
||||
else {
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm_source: >1-bit ascii load\n" );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
generate = vips_foreign_load_ppm_generate_ascii_int;
|
||||
}
|
||||
|
||||
t[0] = vips_image_new();
|
||||
vips_foreign_load_ppm_set_image( ppm, t[0] );
|
||||
if( vips_image_generate( t[0], NULL, generate, NULL, ppm, NULL ) ||
|
||||
vips_sequential( t[0], &out, NULL ) )
|
||||
return( NULL );
|
||||
|
||||
return( out );
|
||||
}
|
||||
|
||||
static int
|
||||
vips_foreign_load_ppm_load( VipsForeignLoad *load )
|
||||
@ -604,38 +692,24 @@ vips_foreign_load_ppm_load( VipsForeignLoad *load )
|
||||
if( vips_source_is_mappable( ppm->source ) &&
|
||||
!ppm->ascii &&
|
||||
ppm->bits >= 8 ) {
|
||||
if( vips_foreign_load_ppm_map( ppm, load->real ) )
|
||||
if( !(t[0] = vips_foreign_load_ppm_map( ppm )) )
|
||||
return( -1 );
|
||||
}
|
||||
else {
|
||||
VipsGenerateFn generate;
|
||||
|
||||
/* What sort of read are we doing?
|
||||
*/
|
||||
if( !ppm->ascii && ppm->bits >= 8 ) {
|
||||
generate = vips_foreign_load_ppm_generate_binary;
|
||||
|
||||
/* The binary loader does not use the buffered IO
|
||||
* object.
|
||||
*/
|
||||
vips_sbuf_unbuffer( ppm->sbuf );
|
||||
}
|
||||
else if( !ppm->ascii && ppm->bits == 1 )
|
||||
generate = vips_foreign_load_ppm_generate_1bit_binary;
|
||||
else if( ppm->ascii && ppm->bits == 1 )
|
||||
generate = vips_foreign_load_ppm_generate_1bit_ascii;
|
||||
else
|
||||
generate = vips_foreign_load_ppm_generate_ascii_int;
|
||||
|
||||
t[0] = vips_image_new();
|
||||
vips_foreign_load_ppm_set_image( ppm, t[0] );
|
||||
if( vips_image_generate( t[0],
|
||||
NULL, generate, NULL, ppm, NULL ) ||
|
||||
vips_sequential( t[0], &t[1], NULL ) ||
|
||||
vips_image_write( t[1], load->real ) )
|
||||
if( !(t[0] = vips_foreign_load_ppm_scan( ppm )) )
|
||||
return( -1 );
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
printf( "vips_foreign_load_ppm: byteswap = %d\n",
|
||||
vips_amiMSBfirst() != ppm->msb_first );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
if( vips__byteswap_bool( t[0], &t[1],
|
||||
vips_amiMSBfirst() != ppm->msb_first ) ||
|
||||
vips_image_write( t[1], load->real ) )
|
||||
return( -1 );
|
||||
|
||||
if( vips_source_decode( ppm->source ) )
|
||||
return( -1 );
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user