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move streamiw inside svgload

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since that's the only place it is used
This commit is contained in:
John Cupitt 2019-11-18 15:07:37 +00:00
parent 09325600ee
commit 73dd7eebe5
5 changed files with 310 additions and 369 deletions
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309
libvips/foreign/svgload.c
View File

@ -64,11 +64,318 @@
#include <ctype.h>
#include <vips/vips.h>
#include <vips/buf.h>
#include <vips/internal.h>
#include <vips/debug.h>
#ifdef HAVE_RSVG
/* A GInputStream that's actually a VipsStreami under the hood. This lets us
* hook librsvg up to libvips using the GInputStream interface.
*/
#define VIPS_TYPE_G_INPUT_STREAM (vips_g_input_stream_get_type())
#define VIPS_G_INPUT_STREAM( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
VIPS_TYPE_G_INPUT_STREAM, VipsGInputStream ))
#define VIPS_G_INPUT_STREAM_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_CAST( (klass), \
VIPS_TYPE_G_INPUT_STREAM, VipsGInputStreamClass))
#define VIPS_IS_G_INPUT_STREAM( obj ) \
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_G_INPUT_STREAM ))
#define VIPS_IS_G_INPUT_STREAM_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_G_INPUT_STREAM ))
#define VIPS_G_INPUT_STREAM_GET_CLASS( obj ) \
(G_TYPE_INSTANCE_GET_CLASS( (obj), \
VIPS_TYPE_G_INPUT_STREAM, VipsGInputStreamClass ))
/* GInputStream <--> VipsStreami
*/
typedef struct _VipsGInputStream {
GInputStream parent_instance;
/*< private >*/
/* The VipsStreami we wrap.
*/
VipsStreami *streami;
} VipsGInputStream;
typedef struct _VipsGInputStreamClass {
GInputStreamClass parent_class;
} VipsGInputStreamClass;
static void vips_g_input_stream_seekable_iface_init( GSeekableIface *iface );
G_DEFINE_TYPE_WITH_CODE( VipsGInputStream, vips_g_input_stream,
G_TYPE_INPUT_STREAM, G_IMPLEMENT_INTERFACE( G_TYPE_SEEKABLE,
vips_g_input_stream_seekable_iface_init ) )
enum {
PROP_0,
PROP_STREAM
};
static void
vips_g_input_stream_get_property( GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec )
{
VipsGInputStream *gstream = VIPS_G_INPUT_STREAM( object );
switch( prop_id ) {
case PROP_STREAM:
g_value_set_object( value, gstream->streami );
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
}
}
static void
vips_g_input_stream_set_property( GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec )
{
VipsGInputStream *gstream = VIPS_G_INPUT_STREAM( object );
switch( prop_id ) {
case PROP_STREAM:
gstream->streami = g_value_dup_object( value );
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
}
}
static void
vips_g_input_stream_finalize( GObject *object )
{
VipsGInputStream *gstream = VIPS_G_INPUT_STREAM( object );
VIPS_FREEF( g_object_unref, gstream->streami );
G_OBJECT_CLASS( vips_g_input_stream_parent_class )->finalize( object );
}
static goffset
vips_g_input_stream_tell( GSeekable *seekable )
{
VipsStreami *streami = VIPS_G_INPUT_STREAM( seekable )->streami;
goffset pos;
VIPS_DEBUG_MSG( "vips_g_input_stream_tell:\n" );
pos = vips_streami_seek( streami, 0, SEEK_CUR );
if( pos == -1 )
return( 0 );
return( pos );
}
static gboolean
vips_g_input_stream_can_seek( GSeekable *seekable )
{
VipsStreami *streami = VIPS_G_INPUT_STREAM( seekable )->streami;
VIPS_DEBUG_MSG( "vips_g_input_stream_can_seek: %d\n",
!streami->is_pipe );
return( !streami->is_pipe );
}
static int
seek_type_to_lseek( GSeekType type )
{
switch( type ) {
default:
case G_SEEK_CUR:
return( SEEK_CUR );
case G_SEEK_SET:
return( SEEK_SET );
case G_SEEK_END:
return( SEEK_END );
}
}
static gboolean
vips_g_input_stream_seek( GSeekable *seekable, goffset offset,
GSeekType type, GCancellable *cancellable, GError **error )
{
VipsStreami *streami = VIPS_G_INPUT_STREAM( seekable )->streami;
VIPS_DEBUG_MSG( "vips_g_input_stream_seek: offset = %" G_GINT64_FORMAT
", type = %d\n", offset, type );
if( vips_streami_seek( streami, offset,
seek_type_to_lseek( type ) ) == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( FALSE );
}
return( TRUE );
}
static gboolean
vips_g_input_stream_can_truncate( GSeekable *seekable )
{
return( FALSE );
}
static gboolean
vips_g_input_stream_truncate( GSeekable *seekable, goffset offset,
GCancellable *cancellable, GError **error )
{
g_set_error_literal( error,
G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_( "Cannot truncate VipsGInputStream" ) );
return( FALSE );
}
static gssize
vips_g_input_stream_read( GInputStream *stream, void *buffer, gsize count,
GCancellable *cancellable, GError **error )
{
VipsStreami *streami;
gssize res;
streami = VIPS_G_INPUT_STREAM( stream )->streami;
VIPS_DEBUG_MSG( "vips_g_input_stream_read: count: %zd\n", count );
if( g_cancellable_set_error_if_cancelled( cancellable, error ) )
return( -1 );
if( (res = vips_streami_read( streami, buffer, count )) == -1 )
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while reading: %s" ),
vips_error_buffer() );
return( res );
}
static gssize
vips_g_input_stream_skip( GInputStream *stream, gsize count,
GCancellable *cancellable, GError **error )
{
VipsStreami *streami;
goffset start;
goffset end;
streami = VIPS_G_INPUT_STREAM( stream )->streami;
VIPS_DEBUG_MSG( "vips_g_input_stream_skip: count: %zd\n", count );
if( g_cancellable_set_error_if_cancelled( cancellable, error ) )
return( -1 );
start = vips_streami_seek( streami, 0, SEEK_CUR );
if( start == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
end = vips_streami_seek( streami, 0, SEEK_END );
if( end == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
if( end - start > count ) {
end = vips_streami_seek( streami, count - (end - start),
SEEK_CUR );
if( end == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
}
return( end - start );
}
static gboolean
vips_g_input_stream_close( GInputStream *stream,
GCancellable *cancellable, GError **error )
{
VipsGInputStream *gstream = VIPS_G_INPUT_STREAM( stream );
vips_streami_minimise( gstream->streami );
return( TRUE );
}
static void
vips_g_input_stream_seekable_iface_init( GSeekableIface *iface )
{
iface->tell = vips_g_input_stream_tell;
iface->can_seek = vips_g_input_stream_can_seek;
iface->seek = vips_g_input_stream_seek;
iface->can_truncate = vips_g_input_stream_can_truncate;
iface->truncate_fn = vips_g_input_stream_truncate;
}
static void
vips_g_input_stream_class_init( VipsGInputStreamClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
GInputStreamClass *istream_class = G_INPUT_STREAM_CLASS( class );
gobject_class->finalize = vips_g_input_stream_finalize;
gobject_class->get_property = vips_g_input_stream_get_property;
gobject_class->set_property = vips_g_input_stream_set_property;
istream_class->read_fn = vips_g_input_stream_read;
istream_class->skip = vips_g_input_stream_skip;
istream_class->close_fn = vips_g_input_stream_close;
g_object_class_install_property( gobject_class, PROP_STREAM,
g_param_spec_object( "input",
_( "Input" ),
_( "Stream to wrap" ),
VIPS_TYPE_STREAMI, G_PARAM_CONSTRUCT_ONLY |
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS ) );
}
static void
vips_g_input_stream_init( VipsGInputStream *gstream )
{
}
/**
* g_input_stream_new_from_vips:
* @streami: stream to wrap
*
* Create a new #GInputStream wrapping a #VipsStreami.
*
* Returns: a new #GInputStream
*/
static GInputStream *
g_input_stream_new_from_vips( VipsStreami *streami )
{
return( g_object_new( VIPS_TYPE_G_INPUT_STREAM,
"input", streami,
NULL ) );
}
#include <cairo.h>
#include <librsvg/rsvg.h>

37
libvips/include/vips/stream.h
View File

@ -217,43 +217,6 @@ size_t vips_streami_sniff_at_most( VipsStreami *streami,
unsigned char *vips_streami_sniff( VipsStreami *streami, size_t length );
gint64 vips_streami_size( VipsStreami *streami );
#define VIPS_TYPE_STREAMIW (vips_streamiw_get_type())
#define VIPS_STREAMIW( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
VIPS_TYPE_STREAMIW, VipsStreamiw ))
#define VIPS_STREAMIW_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_CAST( (klass), \
VIPS_TYPE_STREAMIW, VipsStreamiwClass))
#define VIPS_IS_STREAMIW( obj ) \
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_STREAMIW ))
#define VIPS_IS_STREAMIW_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_STREAMIW ))
#define VIPS_STREAMIW_GET_CLASS( obj ) \
(G_TYPE_INSTANCE_GET_CLASS( (obj), \
VIPS_TYPE_STREAMIW, VipsStreamiwClass ))
/* GInputStream <--> VipsStreami
*/
typedef struct _VipsStreamiw {
GInputStream parent_instance;
/*< private >*/
/* The VipsStreami we wrap.
*/
VipsStreami *streami;
} VipsStreamiw;
typedef struct _VipsStreamiwClass {
GInputStreamClass parent_class;
} VipsStreamiwClass;
GType vips_streamiw_get_type( void );
GInputStream *g_input_stream_new_from_vips( VipsStreami *streami );
#define VIPS_TYPE_STREAMO (vips_streamo_get_type())
#define VIPS_STREAMO( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \

1
libvips/iofuncs/Makefile.am
View File

@ -3,7 +3,6 @@ noinst_LTLIBRARIES = libiofuncs.la
libiofuncs_la_SOURCES = \
stream.c \
streami.c \
streamiw.c \
streamo.c \
bufis.c \
dbuf.c \

3
libvips/iofuncs/streami.c
View File

@ -882,7 +882,8 @@ vips_streami_is_mappable( VipsStreami *streami )
*/
return( streami->data ||
VIPS_STREAM( streami )->filename ||
(streami->is_pipe && VIPS_STREAM( streami )->descriptor) );
(streami->is_pipe &&
VIPS_STREAM( streami )->descriptor) );
}
/**

329
libvips/iofuncs/streamiw.c
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@ -1,329 +0,0 @@
/* GInputStream <--> VipsStreami
*
* Kleis Auke, 9/11/19
*/
/*
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
*/
/* TODO
*
* - should we conditionally exclude this class? It's only needed for librsvg.
* - it pulls in gio.h -- does this change our minimum version for glib?
*/
/*
#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>
static void vips_streamiw_seekable_iface_init( GSeekableIface *iface );
G_DEFINE_TYPE_WITH_CODE( VipsStreamiw, vips_streamiw, G_TYPE_INPUT_STREAM,
G_IMPLEMENT_INTERFACE( G_TYPE_SEEKABLE,
vips_streamiw_seekable_iface_init ) )
enum {
PROP_0,
PROP_STREAM
};
static void
vips_streamiw_get_property( GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec )
{
VipsStreamiw *streamiw = VIPS_STREAMIW( object );
switch( prop_id ) {
case PROP_STREAM:
g_value_set_object( value, streamiw->streami );
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
}
}
static void
vips_streamiw_set_property( GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec )
{
VipsStreamiw *streamiw = VIPS_STREAMIW( object );
switch( prop_id ) {
case PROP_STREAM:
streamiw->streami = g_value_dup_object( value );
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
}
}
static void
vips_streamiw_finalize( GObject *object )
{
VipsStreamiw *streamiw = VIPS_STREAMIW( object );
VIPS_FREEF( g_object_unref, streamiw->streami );
G_OBJECT_CLASS( vips_streamiw_parent_class )->finalize( object );
}
static goffset
vips_streamiw_tell( GSeekable *seekable )
{
VipsStreami *streami = VIPS_STREAMIW( seekable )->streami;
goffset pos;
VIPS_DEBUG_MSG( "vips_streamiw_tell:\n" );
pos = vips_streami_seek( streami, 0, SEEK_CUR );
if( pos == -1 )
return( 0 );
return( pos );
}
static gboolean
vips_streamiw_can_seek( GSeekable *seekable )
{
VipsStreami *streami = VIPS_STREAMIW( seekable )->streami;
VIPS_DEBUG_MSG( "vips_streamiw_can_seek: %d\n", !streami->is_pipe );
return( !streami->is_pipe );
}
static int
seek_type_to_lseek( GSeekType type )
{
switch( type ) {
default:
case G_SEEK_CUR:
return( SEEK_CUR );
case G_SEEK_SET:
return( SEEK_SET );
case G_SEEK_END:
return( SEEK_END );
}
}
static gboolean
vips_streamiw_seek( GSeekable *seekable, goffset offset,
GSeekType type, GCancellable *cancellable, GError **error )
{
VipsStreami *streami = VIPS_STREAMIW( seekable )->streami;
VIPS_DEBUG_MSG( "vips_streamiw_seek: offset = %" G_GINT64_FORMAT
", type = %d\n", offset, type );
if( vips_streami_seek( streami, offset,
seek_type_to_lseek( type ) ) == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( FALSE );
}
return( TRUE );
}
static gboolean
vips_streamiw_can_truncate( GSeekable *seekable )
{
return( FALSE );
}
static gboolean
vips_streamiw_truncate( GSeekable *seekable, goffset offset,
GCancellable *cancellable, GError **error )
{
g_set_error_literal( error,
G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_( "Cannot truncate VipsStreamiw" ) );
return( FALSE );
}
static gssize
vips_streamiw_read( GInputStream *stream, void *buffer, gsize count,
GCancellable *cancellable, GError **error )
{
VipsStreami *streami;
gssize res;
streami = VIPS_STREAMIW( stream )->streami;
VIPS_DEBUG_MSG( "vips_streamiw_read: count: %zd\n", count );
if( g_cancellable_set_error_if_cancelled( cancellable, error ) )
return( -1 );
if( (res = vips_streami_read( streami, buffer, count )) == -1 )
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while reading: %s" ),
vips_error_buffer() );
return( res );
}
static gssize
vips_streamiw_skip( GInputStream *stream, gsize count,
GCancellable *cancellable, GError **error )
{
VipsStreami *streami;
goffset start;
goffset end;
streami = VIPS_STREAMIW( stream )->streami;
VIPS_DEBUG_MSG( "vips_streamiw_skip: count: %zd\n", count );
if( g_cancellable_set_error_if_cancelled( cancellable, error ) )
return( -1 );
start = vips_streami_seek( streami, 0, SEEK_CUR );
if( start == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
end = vips_streami_seek( streami, 0, SEEK_END );
if( end == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
if( end - start > count ) {
end = vips_streami_seek( streami, count - (end - start),
SEEK_CUR );
if( end == -1 ) {
g_set_error( error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_( "Error while seeking: %s" ),
vips_error_buffer() );
return( -1 );
}
}
return( end - start );
}
static gboolean
vips_streamiw_close( GInputStream *stream,
GCancellable *cancellable, GError **error )
{
VipsStreamiw *streamiw = VIPS_STREAMIW( stream );
vips_streami_minimise( streamiw->streami );
return( TRUE );
}
static void
vips_streamiw_seekable_iface_init( GSeekableIface *iface )
{
iface->tell = vips_streamiw_tell;
iface->can_seek = vips_streamiw_can_seek;
iface->seek = vips_streamiw_seek;
iface->can_truncate = vips_streamiw_can_truncate;
iface->truncate_fn = vips_streamiw_truncate;
}
static void
vips_streamiw_class_init( VipsStreamiwClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
GInputStreamClass *istream_class = G_INPUT_STREAM_CLASS( class );
gobject_class->finalize = vips_streamiw_finalize;
gobject_class->get_property = vips_streamiw_get_property;
gobject_class->set_property = vips_streamiw_set_property;
istream_class->read_fn = vips_streamiw_read;
istream_class->skip = vips_streamiw_skip;
istream_class->close_fn = vips_streamiw_close;
g_object_class_install_property( gobject_class, PROP_STREAM,
g_param_spec_object( "input",
_( "Input" ),
_( "Stream to wrap" ),
VIPS_TYPE_STREAMI, G_PARAM_CONSTRUCT_ONLY |
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS ) );
}
static void
vips_streamiw_init( VipsStreamiw *streamiw )
{
}
/**
* g_input_stream_new_from_vips:
* @streami: stream to wrap
*
* Create a new #GInputStream wrapping a #VipsStreami.
*
* Returns: a new #GInputStream
*/
GInputStream *
g_input_stream_new_from_vips( VipsStreami *streami )
{
return( g_object_new( VIPS_TYPE_STREAMIW,
"input", streami,
NULL ) );
}