int
vips__png_write_buf( VipsImage *in,
void **obuf, size_t *olen, int compression, int interlace )
{
WriteBuf *wbuf;
Write *write;
if( !(wbuf = write_buf_new()) )
return( -1 );
if( !(write = write_new( in )) ) {
write_buf_free( wbuf );
return( -1 );
}
png_set_write_fn( write->pPng, wbuf, user_write_data, NULL );
/* Convert it!
*/
if( write_vips( write, compression, interlace ) ) {
write_buf_free( wbuf );
vips_error( "vips2png",
"%s", _( "unable to write to buffer" ) );
return( -1 );
}
*obuf = wbuf->buf;
wbuf->buf = NULL;
if( olen )
*olen = wbuf->len;
write_buf_free( wbuf );
return( 0 );
}
int
vips__png_write_buf( VipsImage *in,
void **obuf, size_t *olen, int compression, int interlace,
const char *profile, VipsForeignPngFilter filter, gboolean strip )
{
Write *write;
if( !(write = write_new( in )) )
return( -1 );
png_set_write_fn( write->pPng, write, user_write_data, NULL );
/* Convert it!
*/
if( write_vips( write,
compression, interlace, profile, filter, strip ) ) {
vips_error( "vips2png",
"%s", _( "unable to write to buffer" ) );
return( -1 );
}
*obuf = write->buf;
write->buf = NULL;
if( olen )
*olen = write->len;
write_finish( write );
return( 0 );
}
int
vips__png_write_buf( VipsImage *in,
void **obuf, size_t *olen, int compression, int interlace,
const char *profile, VipsForeignPngFilter filter, gboolean strip,
gboolean palette, int colours, int Q, double dither )
{
Write *write;
if( !(write = write_new( in )) )
return( -1 );
png_set_write_fn( write->pPng, write, user_write_data, NULL );
/* Convert it!
*/
if( write_vips( write,
compression, interlace, profile, filter, strip, palette,
colours, Q, dither ) ) {
vips_error( "vips2png",
"%s", _( "unable to write to buffer" ) );
return( -1 );
}
*obuf = vips_dbuf_steal( &write->dbuf, olen );
write_finish( write );
return( 0 );
}
/* Write an image to a jpeg file.
*/
int
vips__jpeg_write_file( VipsImage *in,
const char *filename, int Q, const char *profile,
gboolean optimize_coding, gboolean progressive, gboolean strip,
gboolean no_subsample, gboolean trellis_quant,
gboolean overshoot_deringing, gboolean optimize_scans, int quant_table )
{
Write *write;
if( !(write = write_new( in )) )
return( -1 );
if( setjmp( write->eman.jmp ) ) {
/* Here for longjmp() from new_error_exit().
*/
write_destroy( write );
return( -1 );
}
/* Can't do this in write_new(), has to be after we've made the
* setjmp().
*/
jpeg_create_compress( &write->cinfo );
/* Make output.
*/
if( !(write->eman.fp = vips__file_open_write( filename, FALSE )) ) {
write_destroy( write );
return( -1 );
}
jpeg_stdio_dest( &write->cinfo, write->eman.fp );
/* Convert!
*/
if( write_vips( write,
Q, profile, optimize_coding, progressive, strip, no_subsample,
trellis_quant, overshoot_deringing, optimize_scans,
quant_table ) ) {
write_destroy( write );
return( -1 );
}
write_destroy( write );
return( 0 );
}
int
vips__png_write( VipsImage *in, const char *filename,
int compress, int interlace, const char *profile,
VipsForeignPngFilter filter, gboolean strip,
gboolean palette, int colours, int Q, double dither )
{
Write *write;
#ifdef DEBUG
printf( "vips__png_write: writing \"%s\"\n", filename );
#endif /*DEBUG*/
if( !(write = write_new( in )) )
return( -1 );
/* Make output.
*/
if( !(write->fp = vips__file_open_write( filename, FALSE )) )
return( -1 );
png_init_io( write->pPng, write->fp );
/* Convert it!
*/
if( write_vips( write,
compress, interlace, profile, filter, strip, palette,
colours, Q, dither ) ) {
vips_error( "vips2png",
_( "unable to write \"%s\"" ), filename );
return( -1 );
}
write_finish( write );
#ifdef DEBUG
printf( "vips__png_write: done\n" );
#endif /*DEBUG*/
return( 0 );
}
int
vips__png_write( VipsImage *in, const char *filename,
int compress, int interlace )
{
Write *write;
#ifdef DEBUG
printf( "vips__png_write: writing \"%s\"\n", filename );
#endif /*DEBUG*/
if( !(write = write_new( in )) )
return( -1 );
/* Make output.
*/
if( !(write->fp = vips__file_open_write( filename, FALSE )) )
return( -1 );
png_init_io( write->pPng, write->fp );
/* Convert it!
*/
if( write_vips( write, compress, interlace ) ) {
vips_error( "vips2png",
_( "unable to write \"%s\"" ), filename );
return( -1 );
}
write_finish( write );
#ifdef DEBUG
printf( "vips__png_write: done\n" );
#endif /*DEBUG*/
return( 0 );
}
/**
* im_vips2jpeg:
* @in: image to save
* @filename: file to write to
*
* Write a VIPS image to a file as JPEG.
*
* You can embed options in the filename. They have the form:
*
* |[
* filename.jpg:<emphasis>compression</emphasis>,<emphasis>profile</emphasis>
* ]|
*
* <itemizedlist>
* <listitem>
* <para>
* <emphasis>compression</emphasis>
* Compress with this quality factor. Default 75.
* </para>
* </listitem>
* <listitem>
* <para>
* <emphasis>profile</emphasis>
* Attach this ICC profile. For example, "fred.jpg:,/home/john/srgb.icc" will
* embed the profile stored in the file "/home/john/srgb.icc" in the JPEG
* image. This does not affect the pixels which are written, just the way
* they are tagged. You can use the special string "none" to mean
* "don't attach a profile".
* </para>
* </listitem>
* </itemizedlist>
*
* If no profile is specified in the save string and the VIPS header
* contains an ICC profile named IM_META_ICC_NAME ("icc-profile-data"), the
* profile from the VIPS header will be attached.
*
* The image is automatically converted to RGB, Monochrome or CMYK before
* saving. Any metadata attached to the image is saved as EXIF, if possible.
*
* Example:
*
* |[
* im_vips2jpeg( in, "fred.jpg:99,none" );
* ]|
*
* Will write "fred.jpg" at high-quality with no ICC profile.
*
* See also: #VipsFormat, im_jpeg2vips().
*
* Returns: 0 on success, -1 on error.
*/
int
im_vips2jpeg( IMAGE *in, const char *filename )
{
Write *write;
int qfac = 75;
char *profile = NULL;
char *p, *q;
char name[FILENAME_MAX];
char mode[FILENAME_MAX];
char buf[FILENAME_MAX];
/* Parse mode from filename.
*/
im_filename_split( filename, name, mode );
strcpy( buf, mode );
p = &buf[0];
if( (q = im_getnextoption( &p )) ) {
if( strcmp( q, "" ) != 0 )
qfac = atoi( mode );
}
if( (q = im_getnextoption( &p )) ) {
if( strcmp( q, "" ) != 0 )
profile = q;
}
if( (q = im_getnextoption( &p )) ) {
im_error( "im_vips2jpeg",
_( "unknown extra options \"%s\"" ), q );
return( -1 );
}
if( !(write = write_new( in )) )
return( -1 );
if( setjmp( write->eman.jmp ) ) {
/* Here for longjmp() from new_error_exit().
*/
write_destroy( write );
return( -1 );
}
/* Can't do this in write_new(), has to be after we've made the
* setjmp().
*/
jpeg_create_compress( &write->cinfo );
/* Make output.
*/
if( !(write->eman.fp = im__file_open_write( name, FALSE )) ) {
write_destroy( write );
return( -1 );
}
jpeg_stdio_dest( &write->cinfo, write->eman.fp );
/* Convert!
*/
if( write_vips( write, qfac, profile ) ) {
write_destroy( write );
return( -1 );
}
write_destroy( write );
return( 0 );
}
