Merge branch 'add-stream-object' of github.com:libvips/libvips into add-stream-object

This commit is contained in:
John Cupitt 2019-11-22 13:43:32 +00:00
commit c91cfc4050
11 changed files with 659 additions and 55 deletions

View File

@ -3,7 +3,7 @@
#set -x #set -x
set -e set -e
# Glib is build without -fno-omit-frame-pointer. We need # Glib is built without -fno-omit-frame-pointer. We need
# to disable the fast unwinder to get full stacktraces. # to disable the fast unwinder to get full stacktraces.
export ASAN_OPTIONS="fast_unwind_on_malloc=0:allocator_may_return_null=1" export ASAN_OPTIONS="fast_unwind_on_malloc=0:allocator_may_return_null=1"
export UBSAN_OPTIONS="print_stacktrace=1" export UBSAN_OPTIONS="print_stacktrace=1"

View File

@ -191,8 +191,11 @@ typedef struct _VipsStreamiClass {
* *
* Unseekable streams should always return -1. VipsStreami will then * Unseekable streams should always return -1. VipsStreami will then
* seek by _read()ing bytes into memory as required. * seek by _read()ing bytes into memory as required.
*
* We have to use int64 rather than off_t, since we must work on
* Windows, where off_t can be 32-bits.
*/ */
gint64 (*seek)( VipsStreami *, gint64 offset, int ); gint64 (*seek)( VipsStreami *, gint64, int );
} VipsStreamiClass; } VipsStreamiClass;
@ -217,6 +220,44 @@ size_t vips_streami_sniff_at_most( VipsStreami *streami,
unsigned char *vips_streami_sniff( VipsStreami *streami, size_t length ); unsigned char *vips_streami_sniff( VipsStreami *streami, size_t length );
gint64 vips_streami_size( VipsStreami *streami ); gint64 vips_streami_size( VipsStreami *streami );
#define VIPS_TYPE_STREAMIU (vips_streamiu_get_type())
#define VIPS_STREAMIU( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
VIPS_TYPE_STREAMIU, VipsStreamiu ))
#define VIPS_STREAMIU_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_CAST( (klass), \
VIPS_TYPE_STREAMIU, VipsStreamiuClass))
#define VIPS_IS_STREAMIU( obj ) \
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_STREAMIU ))
#define VIPS_IS_STREAMIU_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_STREAMIU ))
#define VIPS_STREAMIU_GET_CLASS( obj ) \
(G_TYPE_INSTANCE_GET_CLASS( (obj), \
VIPS_TYPE_STREAMIU, VipsStreamiuClass ))
/* Subclass of streamiu with signals for handlers. This is supposed to be
* useful for language bindings.
*/
typedef struct _VipsStreamiu {
VipsStreami parent_object;
} VipsStreamiu;
typedef struct _VipsStreamiuClass {
VipsStreamiClass parent_class;
/* The action signals clients can use to implement read and seek.
* We must use gint64 everywhere since there's no G_TYPE_SIZE.
*/
gint64 (*read)( VipsStreamiu *, void *, gint64 );
gint64 (*seek)( VipsStreamiu *, gint64, int );
} VipsStreamiuClass;
GType vips_streamiu_get_type( void );
VipsStreamiu *vips_streamiu_new( void );
#define VIPS_TYPE_STREAMO (vips_streamo_get_type()) #define VIPS_TYPE_STREAMO (vips_streamo_get_type())
#define VIPS_STREAMO( obj ) \ #define VIPS_STREAMO( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \ (G_TYPE_CHECK_INSTANCE_CAST( (obj), \
@ -232,7 +273,9 @@ gint64 vips_streami_size( VipsStreami *streami );
(G_TYPE_INSTANCE_GET_CLASS( (obj), \ (G_TYPE_INSTANCE_GET_CLASS( (obj), \
VIPS_TYPE_STREAMO, VipsStreamoClass )) VIPS_TYPE_STREAMO, VipsStreamoClass ))
#define VIPS_STREAMO_BUFFER_SIZE (4096) /* PNG writes in 8kb chunks, so we need to be a little larger than that.
*/
#define VIPS_STREAMO_BUFFER_SIZE (8500)
/* Output to something like a socket, pipe or memory area. /* Output to something like a socket, pipe or memory area.
*/ */
@ -241,13 +284,17 @@ typedef struct _VipsStreamo {
/*< private >*/ /*< private >*/
/* This stream should write to memory.
*/
gboolean memory;
/* The stream has been finished and can no longer be written. /* The stream has been finished and can no longer be written.
*/ */
gboolean finished; gboolean finished;
/* Write memory output here. /* Write memory output here.
*/ */
GByteArray *memory; GByteArray *memory_buffer;
/* And return memory via this blob. /* And return memory via this blob.
*/ */
@ -296,6 +343,45 @@ int vips_streamo_writef( VipsStreamo *streamo, const char *fmt, ... )
__attribute__((format(printf, 2, 3))); __attribute__((format(printf, 2, 3)));
int vips_streamo_write_amp( VipsStreamo *streamo, const char *str ); int vips_streamo_write_amp( VipsStreamo *streamo, const char *str );
#define VIPS_TYPE_STREAMOU (vips_streamou_get_type())
#define VIPS_STREAMOU( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
VIPS_TYPE_STREAMOU, VipsStreamou ))
#define VIPS_STREAMOU_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_CAST( (klass), \
VIPS_TYPE_STREAMOU, VipsStreamouClass))
#define VIPS_IS_STREAMOU( obj ) \
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_STREAMOU ))
#define VIPS_IS_STREAMOU_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_STREAMOU ))
#define VIPS_STREAMOU_GET_CLASS( obj ) \
(G_TYPE_INSTANCE_GET_CLASS( (obj), \
VIPS_TYPE_STREAMOU, VipsStreamouClass ))
#define VIPS_STREAMOU_BUFFER_SIZE (4096)
/* Output to something like a socket, pipe or memory area.
*/
typedef struct _VipsStreamou {
VipsStreamo parent_object;
} VipsStreamou;
typedef struct _VipsStreamouClass {
VipsStreamoClass parent_class;
/* The action signals clients can use to implement write and finish.
* We must use gint64 everywhere since there's no G_TYPE_SIZE.
*/
gint64 (*write)( VipsStreamou *, const void *, gint64 );
void (*finish)( VipsStreamou * );
} VipsStreamouClass;
GType vips_streamou_get_type( void );
VipsStreamou *vips_streamou_new( void );
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif /*__cplusplus*/ #endif /*__cplusplus*/

View File

@ -3,7 +3,9 @@ noinst_LTLIBRARIES = libiofuncs.la
libiofuncs_la_SOURCES = \ libiofuncs_la_SOURCES = \
stream.c \ stream.c \
streami.c \ streami.c \
streamiu.c \
streamo.c \ streamo.c \
streamou.c \
bufis.c \ bufis.c \
dbuf.c \ dbuf.c \
reorder.c \ reorder.c \
@ -40,9 +42,9 @@ libiofuncs_la_SOURCES = \
system.c \ system.c \
buffer.c buffer.c
vipsmarshal.h: vipsmarshal.h: vipsmarshal.list
glib-genmarshal --prefix=vips --header vipsmarshal.list > vipsmarshal.h glib-genmarshal --prefix=vips --header vipsmarshal.list > vipsmarshal.h
vipsmarshal.c: vipsmarshal.c: vipsmarshal.list
echo "#include \"vipsmarshal.h\"" > vipsmarshal.c echo "#include \"vipsmarshal.h\"" > vipsmarshal.c
glib-genmarshal --prefix=vips --body vipsmarshal.list >> vipsmarshal.c glib-genmarshal --prefix=vips --body vipsmarshal.list >> vipsmarshal.c

View File

@ -331,7 +331,9 @@ vips_init( const char *argv0 )
extern GType sink_memory_thread_state_get_type( void ); extern GType sink_memory_thread_state_get_type( void );
extern GType render_thread_state_get_type( void ); extern GType render_thread_state_get_type( void );
extern GType vips_streami_get_type( void ); extern GType vips_streami_get_type( void );
extern GType vips_streamiu_get_type( void );
extern GType vips_streamo_get_type( void ); extern GType vips_streamo_get_type( void );
extern GType vips_streamou_get_type( void );
static gboolean started = FALSE; static gboolean started = FALSE;
static gboolean done = FALSE; static gboolean done = FALSE;
@ -447,7 +449,9 @@ vips_init( const char *argv0 )
(void) sink_memory_thread_state_get_type(); (void) sink_memory_thread_state_get_type();
(void) render_thread_state_get_type(); (void) render_thread_state_get_type();
(void) vips_streami_get_type(); (void) vips_streami_get_type();
(void) vips_streamiu_get_type();
(void) vips_streamo_get_type(); (void) vips_streamo_get_type();
(void) vips_streamou_get_type();
vips__meta_init_types(); vips__meta_init_types();
vips__interpolate_init(); vips__interpolate_init();
im__format_init(); im__format_init();

View File

@ -33,10 +33,7 @@
/* TODO /* TODO
* *
* - gaussblur is missing the vector path again argh
* - can we map and then close the fd? how about on Windows? * - can we map and then close the fd? how about on Windows?
* - make a subclass that lets you set vfuncs as params, inc. close(),
* is_pipe etc.
*/ */
/* /*
@ -280,7 +277,6 @@ vips_streami_read_real( VipsStreami *streami, void *data, size_t length )
} while( bytes_read < 0 && errno == EINTR ); } while( bytes_read < 0 && errno == EINTR );
return( bytes_read ); return( bytes_read );
} }
static gint64 static gint64

216
libvips/iofuncs/streamiu.c Normal file
View File

@ -0,0 +1,216 @@
/* A Streami subclass with signals you can easily hook up to other input
* sources.
*
* J.Cupitt, 21/11/19
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /*HAVE_UNISTD_H*/
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/debug.h>
#include "vipsmarshal.h"
G_DEFINE_TYPE( VipsStreamiu, vips_streamiu, VIPS_TYPE_STREAMI );
/* Our signals.
*/
enum {
SIG_SEEK,
SIG_READ,
SIG_LAST
};
static guint vips_streamiu_signals[SIG_LAST] = { 0 };
static ssize_t
vips_streamiu_read_real( VipsStreami *streami,
void *buffer, size_t length )
{
gint64 bytes_read;
VIPS_DEBUG_MSG( "vips_streamiu_read_real:\n" );
/* Return value if no attached handler.
*/
bytes_read = 0;
g_signal_emit( streami, vips_streamiu_signals[SIG_READ], 0,
buffer, length, &bytes_read );
VIPS_DEBUG_MSG( " %zd\n", bytes_read );
return( bytes_read );
}
static gint64
vips_streamiu_seek_real( VipsStreami *streami,
gint64 offset, int whence )
{
gint64 new_position;
VIPS_DEBUG_MSG( "vips_streamiu_seek_real:\n" );
/* If there's no user action attached, we fail.
*/
new_position = -1;
g_signal_emit( streami, vips_streamiu_signals[SIG_SEEK], 0,
offset, whence, &new_position );
VIPS_DEBUG_MSG( " %zd\n", new_position );
return( new_position );
}
static gint64
vips_streamiu_read_signal_real( VipsStreamiu *streamiu,
void *data, gint64 length )
{
VIPS_DEBUG_MSG( "vips_streamiu_read_signal_real:\n" );
return( 0 );
}
static gint64
vips_streamiu_seek_signal_real( VipsStreamiu *streamiu,
gint64 offset, int whence )
{
VIPS_DEBUG_MSG( "vips_streamiu_seek_signal_real:\n" );
return( -1 );
}
static void
vips_streamiu_class_init( VipsStreamiuClass *class )
{
VipsObjectClass *object_class = VIPS_OBJECT_CLASS( class );
VipsStreamiClass *streami_class = VIPS_STREAMI_CLASS( class );
object_class->nickname = "streamiu";
object_class->description = _( "input stream" );
streami_class->read = vips_streamiu_read_real;
streami_class->seek = vips_streamiu_seek_real;
class->read = vips_streamiu_read_signal_real;
class->seek = vips_streamiu_seek_signal_real;
/**
* VipsStreamiu::read:
* @streamiu: the stream being operated on
* @buffer: %gpointer, buffer to fill
* @size: %gint64, size of buffer
*
* This signal is emitted to read bytes from the source into @buffer.
*
* Returns: the number of bytes read.
*/
vips_streamiu_signals[SIG_READ] = g_signal_new( "read",
G_TYPE_FROM_CLASS( class ),
G_SIGNAL_ACTION,
G_STRUCT_OFFSET( VipsStreamiuClass, read ),
NULL, NULL,
vips_INT64__INT64_INT,
G_TYPE_INT64, 2,
G_TYPE_INT64, G_TYPE_INT );
/**
* VipsStreamiu::seek:
* @streamiu: the stream being operated on
* @offset: %gint64, seek offset
* @whence: %gint, seek origin
*
* This signal is emitted to seek the stream. The handler should
* change the stream position appropriately.
*
* The handler on an unseekable stream should always return -1.
*
* Returns: the new seek position.
*/
vips_streamiu_signals[SIG_SEEK] = g_signal_new( "seek",
G_TYPE_FROM_CLASS( class ),
G_SIGNAL_ACTION,
G_STRUCT_OFFSET( VipsStreamiuClass, seek ),
NULL, NULL,
vips_INT64__POINTER_INT64,
G_TYPE_INT64, 2,
G_TYPE_POINTER, G_TYPE_INT64 );
}
static void
vips_streamiu_init( VipsStreamiu *streamiu )
{
}
/**
* vips_streamiu_new:
*
* Create a #VipsStreamiu. Attach signals to implement read and seek.
*
* Returns: a new #VipsStreamiu
*/
VipsStreamiu *
vips_streamiu_new( void )
{
VipsStreamiu *streamiu;
VIPS_DEBUG_MSG( "vips_streamiu_new:\n" );
streamiu = VIPS_STREAMIU( g_object_new( VIPS_TYPE_STREAMIU, NULL ) );
if( vips_object_build( VIPS_OBJECT( streamiu ) ) ) {
VIPS_UNREF( streamiu );
return( NULL );
}
return( streamiu );
}

View File

@ -31,12 +31,6 @@
*/ */
/* TODO
*
* - test we can really change all behaviour in the subclass ... add callbacks
* as well to make it simpler for language bindings
*/
/* /*
#define VIPS_DEBUG #define VIPS_DEBUG
*/ */
@ -93,7 +87,7 @@ vips_streamo_finalize( GObject *gobject )
VIPS_DEBUG_MSG( "vips_streamo_finalize:\n" ); VIPS_DEBUG_MSG( "vips_streamo_finalize:\n" );
VIPS_FREEF( g_byte_array_unref, streamo->memory ); VIPS_FREEF( g_byte_array_unref, streamo->memory_buffer );
if( streamo->blob ) { if( streamo->blob ) {
vips_area_unref( VIPS_AREA( streamo->blob ) ); vips_area_unref( VIPS_AREA( streamo->blob ) );
streamo->blob = NULL; streamo->blob = NULL;
@ -120,7 +114,7 @@ vips_streamo_build( VipsObject *object )
return( -1 ); return( -1 );
} }
if( vips_object_argument_isset( object, "filename" ) ) { if( stream->filename ) {
const char *filename = stream->filename; const char *filename = stream->filename;
int fd; int fd;
@ -141,8 +135,8 @@ vips_streamo_build( VipsObject *object )
stream->descriptor = dup( stream->descriptor ); stream->descriptor = dup( stream->descriptor );
stream->close_descriptor = stream->descriptor; stream->close_descriptor = stream->descriptor;
} }
else { else if( streamo->memory ) {
streamo->memory = g_byte_array_new(); streamo->memory_buffer = g_byte_array_new();
} }
return( 0 ); return( 0 );
@ -182,10 +176,17 @@ vips_streamo_class_init( VipsStreamoClass *class )
class->write = vips_streamo_write_real; class->write = vips_streamo_write_real;
class->finish = vips_streamo_finish_real; class->finish = vips_streamo_finish_real;
VIPS_ARG_BOOL( class, "memory", 3,
_( "Memory" ),
_( "File descriptor should output to memory" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsStreamo, memory ),
FALSE );
/* SET_ALWAYS means that blob is set by C and the obj system is not /* SET_ALWAYS means that blob is set by C and the obj system is not
* involved in creation or destruction. It can be read at any time. * involved in creation or destruction. It can be read at any time.
*/ */
VIPS_ARG_BOXED( class, "blob", 3, VIPS_ARG_BOXED( class, "blob", 4,
_( "Blob" ), _( "Blob" ),
_( "Blob to save to" ), _( "Blob to save to" ),
VIPS_ARGUMENT_SET_ALWAYS, VIPS_ARGUMENT_SET_ALWAYS,
@ -277,7 +278,9 @@ vips_streamo_new_to_memory( void )
VIPS_DEBUG_MSG( "vips_streamo_new_to_memory:\n" ); VIPS_DEBUG_MSG( "vips_streamo_new_to_memory:\n" );
streamo = VIPS_STREAMO( g_object_new( VIPS_TYPE_STREAMO, NULL ) ); streamo = VIPS_STREAMO( g_object_new( VIPS_TYPE_STREAMO,
"memory", TRUE,
NULL ) );
if( vips_object_build( VIPS_OBJECT( streamo ) ) ) { if( vips_object_build( VIPS_OBJECT( streamo ) ) ) {
VIPS_UNREF( streamo ); VIPS_UNREF( streamo );
@ -293,11 +296,13 @@ vips_streamo_write_unbuffered( VipsStreamo *streamo,
{ {
VipsStreamoClass *class = VIPS_STREAMO_GET_CLASS( streamo ); VipsStreamoClass *class = VIPS_STREAMO_GET_CLASS( streamo );
VIPS_DEBUG_MSG( "vips_streamo_write_unbuffered:\n" );
if( streamo->finished ) if( streamo->finished )
return( 0 ); return( 0 );
if( streamo->memory ) if( streamo->memory_buffer )
g_byte_array_append( streamo->memory, data, length ); g_byte_array_append( streamo->memory_buffer, data, length );
else else
while( length > 0 ) { while( length > 0 ) {
ssize_t n; ssize_t n;
@ -328,6 +333,8 @@ vips_streamo_flush( VipsStreamo *streamo )
g_assert( streamo->write_point >= 0 ); g_assert( streamo->write_point >= 0 );
g_assert( streamo->write_point <= VIPS_STREAMO_BUFFER_SIZE ); g_assert( streamo->write_point <= VIPS_STREAMO_BUFFER_SIZE );
VIPS_DEBUG_MSG( "vips_streamo_flush:\n" );
if( streamo->write_point > 0 ) { if( streamo->write_point > 0 ) {
if( vips_streamo_write_unbuffered( streamo, if( vips_streamo_write_unbuffered( streamo,
streamo->output_buffer, streamo->write_point ) ) streamo->output_buffer, streamo->write_point ) )
@ -397,13 +404,13 @@ vips_streamo_finish( VipsStreamo *streamo )
/* Move the stream buffer into the blob so it can be read out. /* Move the stream buffer into the blob so it can be read out.
*/ */
if( streamo->memory ) { if( streamo->memory_buffer ) {
unsigned char *data; unsigned char *data;
size_t length; size_t length;
length = streamo->memory->len; length = streamo->memory_buffer->len;
data = g_byte_array_free( streamo->memory, FALSE ); data = g_byte_array_free( streamo->memory_buffer, FALSE );
streamo->memory = NULL; streamo->memory_buffer = NULL;
vips_blob_set( streamo->blob, vips_blob_set( streamo->blob,
(VipsCallbackFn) g_free, data, length ); (VipsCallbackFn) g_free, data, length );
} }
@ -436,22 +443,22 @@ vips_streamo_steal( VipsStreamo *streamo, size_t *length )
(void) vips_streamo_flush( streamo ); (void) vips_streamo_flush( streamo );
if( !streamo->memory || if( !streamo->memory_buffer ||
streamo->finished ) { streamo->finished ) {
if( length ) if( length )
*length = streamo->memory->len; *length = streamo->memory_buffer->len;
return( NULL ); return( NULL );
} }
if( length ) if( length )
*length = streamo->memory->len; *length = streamo->memory_buffer->len;
data = g_byte_array_free( streamo->memory, FALSE ); data = g_byte_array_free( streamo->memory_buffer, FALSE );
streamo->memory = NULL; streamo->memory_buffer = NULL;
/* We must have a valid byte array or finish will fail. /* We must have a valid byte array or finish will fail.
*/ */
streamo->memory = g_byte_array_new(); streamo->memory_buffer = g_byte_array_new();
vips_streamo_finish( streamo ); vips_streamo_finish( streamo );

194
libvips/iofuncs/streamou.c Normal file
View File

@ -0,0 +1,194 @@
/* A Streamo subclass with signals you can easily hook up to other output
* sources.
*
* J.Cupitt, 21/11/19
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /*HAVE_UNISTD_H*/
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/debug.h>
#include "vipsmarshal.h"
G_DEFINE_TYPE( VipsStreamou, vips_streamou, VIPS_TYPE_STREAMO );
/* Our signals.
*/
enum {
SIG_WRITE,
SIG_FINISH,
SIG_LAST
};
static guint vips_streamou_signals[SIG_LAST] = { 0 };
static ssize_t
vips_streamou_write_real( VipsStreamo *streamo,
const void *data, size_t length )
{
gint64 bytes_written;
VIPS_DEBUG_MSG( "vips_streamou_write_real:\n" );
/* Return value if no attached handler.
*/
bytes_written = 0;
g_signal_emit( streamo, vips_streamou_signals[SIG_WRITE], 0,
data, length, &bytes_written );
VIPS_DEBUG_MSG( " %zd\n", bytes_written );
return( bytes_written );
}
static void
vips_streamou_finish_real( VipsStreamo *streamo )
{
VIPS_DEBUG_MSG( "vips_streamou_seek_real:\n" );
g_signal_emit( streamo, vips_streamou_signals[SIG_FINISH], 0 );
}
static gint64
vips_streamou_write_signal_real( VipsStreamou *streamou,
const void *data, gint64 length )
{
VIPS_DEBUG_MSG( "vips_streamou_write_signal_real:\n" );
return( 0 );
}
static void
vips_streamou_finish_signal_real( VipsStreamou *streamou )
{
VIPS_DEBUG_MSG( "vips_streamou_finish_signal_real:\n" );
}
static void
vips_streamou_class_init( VipsStreamouClass *class )
{
VipsObjectClass *object_class = VIPS_OBJECT_CLASS( class );
VipsStreamoClass *streamo_class = VIPS_STREAMO_CLASS( class );
object_class->nickname = "streamou";
object_class->description = _( "input stream" );
streamo_class->write = vips_streamou_write_real;
streamo_class->finish = vips_streamou_finish_real;
class->write = vips_streamou_write_signal_real;
class->finish = vips_streamou_finish_signal_real;
/**
* VipsStreamou::write:
* @streamou: the stream being operated on
* @data: %pointer, bytes to write
* @length: %gint64, number of bytes
*
* This signal is emitted to write bytes to the stream.
*
* Returns: the number of bytes written.
*/
vips_streamou_signals[SIG_WRITE] = g_signal_new( "write",
G_TYPE_FROM_CLASS( class ),
G_SIGNAL_ACTION,
G_STRUCT_OFFSET( VipsStreamouClass, write ),
NULL, NULL,
vips_INT64__POINTER_INT64,
G_TYPE_INT64, 2,
G_TYPE_POINTER, G_TYPE_INT64 );
/**
* VipsStreamou::finish:
* @streamou: the stream being operated on
*
* This signal is emitted at the end of write. The stream should do
* any finishing necessary.
*/
vips_streamou_signals[SIG_FINISH] = g_signal_new( "finish",
G_TYPE_FROM_CLASS( class ),
G_SIGNAL_ACTION,
G_STRUCT_OFFSET( VipsStreamouClass, finish ),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0 );
}
static void
vips_streamou_init( VipsStreamou *streamou )
{
}
/**
* vips_streamou_new:
*
* Create a #VipsStreamou. Attach signals to implement write and finish.
*
* Returns: a new #VipsStreamou
*/
VipsStreamou *
vips_streamou_new( void )
{
VipsStreamou *streamou;
VIPS_DEBUG_MSG( "vips_streamou_new:\n" );
streamou = VIPS_STREAMOU( g_object_new( VIPS_TYPE_STREAMOU, NULL ) );
if( vips_object_build( VIPS_OBJECT( streamou ) ) ) {
VIPS_UNREF( streamou );
return( NULL );
}
return( streamou );
}

View File

@ -1,7 +1,6 @@
#include "vipsmarshal.h" #include "vipsmarshal.h"
/* This file is generated by glib-genmarshal, do not modify it. This code is licensed under the same license as the containing project. Note that it links to GLib, so must comply with the LGPL linking clauses. */
#include <glib-object.h> #include <glib-object.h>
#ifdef G_ENABLE_DEBUG #ifdef G_ENABLE_DEBUG
#define g_marshal_value_peek_boolean(v) g_value_get_boolean (v) #define g_marshal_value_peek_boolean(v) g_value_get_boolean (v)
@ -49,21 +48,20 @@
#define g_marshal_value_peek_variant(v) (v)->data[0].v_pointer #define g_marshal_value_peek_variant(v) (v)->data[0].v_pointer
#endif /* !G_ENABLE_DEBUG */ #endif /* !G_ENABLE_DEBUG */
/* INT: VOID (vipsmarshal.list:25) */
/* INT:VOID (vipsmarshal.list:25) */
void void
vips_INT__VOID (GClosure *closure, vips_INT__VOID (GClosure *closure,
GValue *return_value G_GNUC_UNUSED, GValue *return_value,
guint n_param_values, guint n_param_values,
const GValue *param_values, const GValue *param_values,
gpointer invocation_hint G_GNUC_UNUSED, gpointer invocation_hint G_GNUC_UNUSED,
gpointer marshal_data) gpointer marshal_data)
{ {
typedef gint (*GMarshalFunc_INT__VOID) (gpointer data1, typedef gint (*GMarshalFunc_INT__VOID) (gpointer data1,
gpointer data2); gpointer data2);
register GMarshalFunc_INT__VOID callback; GCClosure *cc = (GCClosure *) closure;
register GCClosure *cc = (GCClosure*) closure; gpointer data1, data2;
register gpointer data1, data2; GMarshalFunc_INT__VOID callback;
gint v_return; gint v_return;
g_return_if_fail (return_value != NULL); g_return_if_fail (return_value != NULL);
@ -87,3 +85,85 @@ vips_INT__VOID (GClosure *closure,
g_value_set_int (return_value, v_return); g_value_set_int (return_value, v_return);
} }
/* INT64: INT64, INT (vipsmarshal.list:26) */
void
vips_INT64__INT64_INT (GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint G_GNUC_UNUSED,
gpointer marshal_data)
{
typedef gint64 (*GMarshalFunc_INT64__INT64_INT) (gpointer data1,
gint64 arg1,
gint arg2,
gpointer data2);
GCClosure *cc = (GCClosure *) closure;
gpointer data1, data2;
GMarshalFunc_INT64__INT64_INT callback;
gint64 v_return;
g_return_if_fail (return_value != NULL);
g_return_if_fail (n_param_values == 3);
if (G_CCLOSURE_SWAP_DATA (closure))
{
data1 = closure->data;
data2 = g_value_peek_pointer (param_values + 0);
}
else
{
data1 = g_value_peek_pointer (param_values + 0);
data2 = closure->data;
}
callback = (GMarshalFunc_INT64__INT64_INT) (marshal_data ? marshal_data : cc->callback);
v_return = callback (data1,
g_marshal_value_peek_int64 (param_values + 1),
g_marshal_value_peek_int (param_values + 2),
data2);
g_value_set_int64 (return_value, v_return);
}
/* INT64: POINTER, INT64 (vipsmarshal.list:27) */
void
vips_INT64__POINTER_INT64 (GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint G_GNUC_UNUSED,
gpointer marshal_data)
{
typedef gint64 (*GMarshalFunc_INT64__POINTER_INT64) (gpointer data1,
gpointer arg1,
gint64 arg2,
gpointer data2);
GCClosure *cc = (GCClosure *) closure;
gpointer data1, data2;
GMarshalFunc_INT64__POINTER_INT64 callback;
gint64 v_return;
g_return_if_fail (return_value != NULL);
g_return_if_fail (n_param_values == 3);
if (G_CCLOSURE_SWAP_DATA (closure))
{
data1 = closure->data;
data2 = g_value_peek_pointer (param_values + 0);
}
else
{
data1 = g_value_peek_pointer (param_values + 0);
data2 = closure->data;
}
callback = (GMarshalFunc_INT64__POINTER_INT64) (marshal_data ? marshal_data : cc->callback);
v_return = callback (data1,
g_marshal_value_peek_pointer (param_values + 1),
g_marshal_value_peek_int64 (param_values + 2),
data2);
g_value_set_int64 (return_value, v_return);
}

View File

@ -1,20 +1,39 @@
/* This file is generated by glib-genmarshal, do not modify it. This code is licensed under the same license as the containing project. Note that it links to GLib, so must comply with the LGPL linking clauses. */
#ifndef __VIPS_MARSHAL_H__
#define __VIPS_MARSHAL_H__
#ifndef __vips_MARSHAL_H__ #include <glib-object.h>
#define __vips_MARSHAL_H__
#include <glib-object.h>
G_BEGIN_DECLS G_BEGIN_DECLS
/* INT:VOID (vipsmarshal.list:25) */ /* INT: VOID (vipsmarshal.list:25) */
extern void vips_INT__VOID (GClosure *closure, extern
void vips_INT__VOID (GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
/* INT64: INT64, INT (vipsmarshal.list:26) */
extern
void vips_INT64__INT64_INT (GClosure *closure,
GValue *return_value, GValue *return_value,
guint n_param_values, guint n_param_values,
const GValue *param_values, const GValue *param_values,
gpointer invocation_hint, gpointer invocation_hint,
gpointer marshal_data); gpointer marshal_data);
/* INT64: POINTER, INT64 (vipsmarshal.list:27) */
extern
void vips_INT64__POINTER_INT64 (GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
G_END_DECLS G_END_DECLS
#endif /* __vips_MARSHAL_H__ */ #endif /* __VIPS_MARSHAL_H__ */

View File

@ -23,5 +23,5 @@
# BOOL deprecated alias for BOOLEAN # BOOL deprecated alias for BOOLEAN
INT: VOID INT: VOID
INT64: INT64, INT
INT64: POINTER, INT64