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 );
}
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 );
}
void write_run()
{
uint32_t llen;
char* p;
while (1)
{
if (m_close)/*是否被关闭*/
{
m_write_close = true;
return;
}
p = write_start(llen);
if (m_write_fun(p, llen))
{
write_finish(llen);
}
else
{
break;
}
}
}
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 );
}
static void
write_destroy( VipsImage *out, Write *write )
{
write_finish( write );
}