static void
vips_exif_update( ExifData *ed, VipsImage *image )
{
VipsExifRemove ve;
VIPS_DEBUG_MSG( "vips_exif_update: \n" );
/* If this exif came from the image (rather than being an exif block we
* have made afresh), then any fields which are in the block but not on
* the image must have been deliberately removed. Remove them from the
* block as well.
*
* If there are any string-valued fields (eg. comment etc.) which
* exist as libvips metadata tags, we must also remove those from the
* exif block.
*
* libexif does not allow you to change string lengths, you must make
* new tags, so we have to remove ready to re-add.
*/
if( vips_image_get_typeof( image, VIPS_META_EXIF_NAME ) ) {
ve.image = image;
ve.ed = ed;
exif_data_foreach_content( ed,
(ExifDataForeachContentFunc) vips_exif_exif_content,
&ve );
}
/* Walk the image and add any exif- that's set in image metadata.
*/
vips_image_map( image, vips_exif_image_field, ed );
}
/* Print header, or parts of header.
*/
static int
print_header( IMAGE *im, gboolean many )
{
if( !main_option_field ) {
printf( "%s: ", im->filename );
vips_object_print_summary( VIPS_OBJECT( im ) );
if( main_option_all )
(void) vips_image_map( im, print_field_fn, &many );
}
else if( strcmp( main_option_field, "getext" ) == 0 ) {
if( im__has_extension_block( im ) ) {
void *buf;
int size;
if( !(buf = im__read_extension_block( im, &size )) )
return( -1 );
printf( "%s", (char *) buf );
im_free( buf );
}
}
else if( strcmp( main_option_field, "Hist" ) == 0 )
printf( "%s", im_history_get( im ) );
else {
GValue value = { 0 };
GType type;
if( im_header_get( im, main_option_field, &value ) )
return( -1 );
/* Display the save form, if there is one. This way we display
* something useful for ICC profiles, xml fields, etc.
*/
type = G_VALUE_TYPE( &value );
if( g_value_type_transformable( type, IM_TYPE_SAVE_STRING ) ) {
GValue save_value = { 0 };
g_value_init( &save_value, IM_TYPE_SAVE_STRING );
if( !g_value_transform( &value, &save_value ) )
return( -1 );
printf( "%s\n", im_save_string_get( &save_value ) );
g_value_unset( &save_value );
}
else {
char *str_value;
str_value = g_strdup_value_contents( &value );
printf( "%s\n", str_value );
g_free( str_value );
}
g_value_unset( &value );
}
return( 0 );
}
static int
vips_fits_set_header( VipsFits *fits, VipsImage *in )
{
int status;
int bitpix;
int i;
status = 0;
fits->naxis = 3;
fits->naxes[0] = in->Xsize;
fits->naxes[1] = in->Ysize;
fits->naxes[2] = in->Bands;
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][1] == in->BandFmt )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
vips_error( "fits",
_( "unsupported BandFmt %d\n" ), in->BandFmt );
return( -1 );
}
bitpix = fits2vips_formats[i][0];
fits->datatype = fits2vips_formats[i][2];
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
VIPS_DEBUG_MSG( "bitpix = %d\n", bitpix );
#endif /*VIPS_DEBUG*/
if( fits_create_imgll( fits->fptr, bitpix, fits->naxis,
fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
if( vips_image_map( in,
(VipsImageMapFn) vips_fits_write_meta, fits ) )
return( -1 );
return( 0 );
}
static void
vips_exif_update( ExifData *ed, VipsImage *image )
{
VipsExif ve;
VIPS_DEBUG_MSG( "vips_exif_update: \n" );
/* Walk the image and update any stuff that's been changed in image
* metadata.
*/
vips_image_map( image, vips_exif_image_field, ed );
/* Walk the exif and look for any fields which are NOT in image
* metadata. They must have been removed ... remove them from exif as
* well.
*/
ve.image = image;
ve.ed = ed;
exif_data_foreach_content( ed,
(ExifDataForeachContentFunc) vips_exif_exif_content, &ve );
}
/* Write a VIPS image to PNG.
*/
static int
write_vips( Write *write,
int compress, int interlace, const char *profile,
VipsForeignPngFilter filter, gboolean strip,
gboolean palette, int colours, int Q, double dither )
{
VipsImage *in = write->in;
int bit_depth;
int color_type;
int interlace_type;
int i, nb_passes;
g_assert( in->BandFmt == VIPS_FORMAT_UCHAR ||
in->BandFmt == VIPS_FORMAT_USHORT );
g_assert( in->Coding == VIPS_CODING_NONE );
g_assert( in->Bands > 0 && in->Bands < 5 );
/* Catch PNG errors.
*/
if( setjmp( png_jmpbuf( write->pPng ) ) )
return( -1 );
/* Check input image. If we are writing interlaced, we need to make 7
* passes over the image. We advertise ourselves as seq, so to ensure
* we only suck once from upstream, switch to WIO.
*/
if( interlace ) {
if( !(write->memory = vips_image_copy_memory( in )) )
return( -1 );
in = write->memory;
}
else {
if( vips_image_pio_input( in ) )
return( -1 );
}
if( compress < 0 || compress > 9 ) {
vips_error( "vips2png",
"%s", _( "compress should be in [0,9]" ) );
return( -1 );
}
/* Set compression parameters.
*/
png_set_compression_level( write->pPng, compress );
/* Set row filter.
*/
png_set_filter( write->pPng, 0, filter );
bit_depth = in->BandFmt == VIPS_FORMAT_UCHAR ? 8 : 16;
switch( in->Bands ) {
case 1: color_type = PNG_COLOR_TYPE_GRAY; break;
case 2: color_type = PNG_COLOR_TYPE_GRAY_ALPHA; break;
case 3: color_type = PNG_COLOR_TYPE_RGB; break;
case 4: color_type = PNG_COLOR_TYPE_RGB_ALPHA; break;
default:
vips_error( "vips2png",
_( "can't save %d band image as png" ), in->Bands );
return( -1 );
}
#ifdef HAVE_IMAGEQUANT
/* Enable image quantisation to paletted 8bpp PNG if colours is set.
*/
if( palette ) {
g_assert( colours >= 2 &&
colours <= 256 );
bit_depth = 8;
color_type = PNG_COLOR_TYPE_PALETTE;
}
#else
if( palette )
g_warning( "%s",
_( "ignoring palette (no quantisation support)" ) );
#endif /*HAVE_IMAGEQUANT*/
interlace_type = interlace ? PNG_INTERLACE_ADAM7 : PNG_INTERLACE_NONE;
png_set_IHDR( write->pPng, write->pInfo,
in->Xsize, in->Ysize, bit_depth, color_type, interlace_type,
PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT );
/* Set resolution. libpng uses pixels per meter.
*/
png_set_pHYs( write->pPng, write->pInfo,
VIPS_RINT( in->Xres * 1000 ), VIPS_RINT( in->Yres * 1000 ),
PNG_RESOLUTION_METER );
/* Set ICC Profile.
*/
if( profile &&
!strip ) {
if( strcmp( profile, "none" ) != 0 ) {
void *data;
size_t length;
if( !(data = vips__file_read_name( profile,
vips__icc_dir(), &length )) )
return( -1 );
#ifdef DEBUG
printf( "write_vips: "
"attaching %zd bytes of ICC profile\n",
length );
#endif /*DEBUG*/
png_set_iCCP( write->pPng, write->pInfo, "icc",
PNG_COMPRESSION_TYPE_BASE, data, length );
}
}
else if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) &&
!strip ) {
void *data;
size_t length;
if( vips_image_get_blob( in, VIPS_META_ICC_NAME,
&data, &length ) )
return( -1 );
#ifdef DEBUG
printf( "write_vips: attaching %zd bytes of ICC profile\n",
length );
#endif /*DEBUG*/
png_set_iCCP( write->pPng, write->pInfo, "icc",
PNG_COMPRESSION_TYPE_BASE, data, length );
}
if( vips_image_get_typeof( in, VIPS_META_XMP_NAME ) ) {
const char *str;
if( vips_image_get_string( in, VIPS_META_XMP_NAME, &str ) )
return( -1 );
vips__png_set_text( write->pPng, write->pInfo,
"XML:com.adobe.xmp", str );
}
/* Set any "png-comment-xx-yyy" metadata items.
*/
if( vips_image_map( in,
write_png_comment, write ) )
return( -1 );
#ifdef HAVE_IMAGEQUANT
if( palette ) {
VipsImage *im_index;
VipsImage *im_palette;
int palette_count;
png_color *png_palette;
png_byte *png_trans;
int trans_count;
if( vips__quantise_image( in, &im_index, &im_palette,
colours, Q, dither ) )
return( -1 );
palette_count = im_palette->Xsize;
g_assert( palette_count <= PNG_MAX_PALETTE_LENGTH );
png_palette = (png_color *) png_malloc( write->pPng,
palette_count * sizeof( png_color ) );
png_trans = (png_byte *) png_malloc( write->pPng,
palette_count * sizeof( png_byte ) );
trans_count = 0;
for( i = 0; i < palette_count; i++ ) {
VipsPel *p = (VipsPel *)
VIPS_IMAGE_ADDR( im_palette, i, 0 );
png_color *col = &png_palette[i];
col->red = p[0];
col->green = p[1];
col->blue = p[2];
png_trans[i] = p[3];
if( p[3] != 255 )
trans_count = i + 1;
#ifdef DEBUG
printf( "write_vips: palette[%d] %d %d %d %d\n",
i + 1, p[0], p[1], p[2], p[3] );
#endif /*DEBUG*/
}
#ifdef DEBUG
printf( "write_vips: attaching %d color palette\n",
palette_count );
#endif /*DEBUG*/
png_set_PLTE( write->pPng, write->pInfo, png_palette,
palette_count );
if( trans_count ) {
#ifdef DEBUG
printf( "write_vips: attaching %d alpha values\n",
trans_count );
#endif /*DEBUG*/
png_set_tRNS( write->pPng, write->pInfo, png_trans,
trans_count, NULL );
}
png_free( write->pPng, (void *) png_palette );
png_free( write->pPng, (void *) png_trans );
VIPS_UNREF( im_palette );
VIPS_UNREF( write->memory );
write->memory = im_index;
in = write->memory;
}
#endif /*HAVE_IMAGEQUANT*/
png_write_info( write->pPng, write->pInfo );
/* If we're an intel byte order CPU and this is a 16bit image, we need
* to swap bytes.
*/
if( bit_depth > 8 &&
!vips_amiMSBfirst() )
png_set_swap( write->pPng );
if( interlace )
nb_passes = png_set_interlace_handling( write->pPng );
else
nb_passes = 1;
/* Write data.
*/
for( i = 0; i < nb_passes; i++ )
if( vips_sink_disc( in, write_png_block, write ) )
return( -1 );
/* The setjmp() was held by our background writer: reset it.
*/
if( setjmp( png_jmpbuf( write->pPng ) ) )
return( -1 );
png_write_end( write->pPng, write->pInfo );
return( 0 );
}
