AgsFile: Advanced Gtk+ Sequencer Reference Manual

Functions

pthread_mutex_t *	ags_file_get_class_mutex ()
gchar *	ags_file_str2md5 ()
void	ags_file_add_id_ref ()
GObject *	ags_file_find_id_ref_by_node ()
GObject *	ags_file_find_id_ref_by_xpath ()
GObject *	ags_file_find_id_ref_by_reference ()
void	ags_file_add_lookup ()
void	ags_file_add_launch ()
void	ags_file_open ()
void	ags_file_open_from_data ()
void	ags_file_rw_open ()
void	ags_file_open_filename ()
void	ags_file_close ()
void	ags_file_write ()
void	ags_file_write_concurrent ()
void	ags_file_write_resolve ()
void	ags_file_read ()
void	ags_file_read_resolve ()
void	ags_file_read_start ()
void	ags_file_read_config ()
void	ags_file_write_config ()
void	ags_file_read_application_context ()
void	ags_file_write_application_context ()
AgsFile *	ags_file_new ()
#define	AGS_FILE()
#define	AGS_FILE_CLASS()
#define	AGS_FILE_GET_CLASS()
#define	AGS_IS_FILE()
GType	ags_file_get_type ()

Properties

AgsApplicationContext *	application-context	Read / Write
gchar *	audio-encoding	Read / Write
gchar *	audio-format	Read / Write
gchar *	encoding	Read / Write
gchar *	filename	Read / Write
gpointer	xml-doc	Read / Write

Signals

void	open	Run Last
void	open-from-data	Run Last
void	read	Run Last
void	read-resolve	Run Last
void	read-start	Run Last
void	rw-open	Run Last
void	write	Run Last
void	write-concurrent	Run Last
void	write-resolve	Run Last

Types and Values

#define	AGS_FILE_DEFAULT_ENCODING
#define	AGS_FILE_DEFAULT_DTD
#define	AGS_FILE_CHECKSUM_LENGTH
#define	AGS_FILE_DEFAULT_AUDIO_FORMAT
#define	AGS_FILE_DEFAULT_AUDIO_ENCODING
enum	AgsFileFlags
#define	AGS_FILE_ERROR
enum	AgsFileError
#define	AGS_TYPE_FILE
struct	AgsFile
struct	AgsFileClass

Object Hierarchy

    GObject
    ╰── AgsFile

Includes

#include <ags/file/ags_file.h>

Description

The AgsFile is an object to read or write files using XML. It is the persisting layer of Advanced Gtk+ Sequencer.

Functions

ags_file_get_class_mutex ()

pthread_mutex_t *
ags_file_get_class_mutex ();

Use this function's returned mutex to access mutex fields.

Returns

the class mutex

Since: 2.0.0

ags_file_str2md5 ()

gchar *
ags_file_str2md5 (gchar *content,
                  guint content_length);

Compute MD5 sums of a buffer.

Parameters

content	the string buffer
content_length	the length of the string

Returns

the md5 checksum

Since: 2.0.0

ags_file_add_id_ref ()

void
ags_file_add_id_ref (AgsFile *file,
                     GObject *id_ref);

Adds id_ref to file .

Parameters

file	the `AgsFile`
id_ref	a reference

Since: 2.0.0

ags_file_find_id_ref_by_node ()

GObject *
ags_file_find_id_ref_by_node (AgsFile *file,
                              xmlNode *node);

ags_file_find_id_ref_by_xpath ()

GObject *
ags_file_find_id_ref_by_xpath (AgsFile *file,
                               gchar *xpath);

Lookup a reference by xpath .

Parameters

file	the AgsFile
xpath	a XPath expression

Returns

the matching GObject

Since: 2.0.0

ags_file_find_id_ref_by_reference ()

GObject *
ags_file_find_id_ref_by_reference (AgsFile *file,
                                   gpointer ref);

Find a reference matching ref .

Parameters

file	the AgsFile
ref	a `gpointer`

Returns

the matching GObject

Since: 2.0.0

ags_file_add_lookup ()

void
ags_file_add_lookup (AgsFile *file,
                     GObject *file_lookup);

Add file_lookup for later invoking.

Parameters

file	the AgsFile
file_lookup	a AgsFileLookup

Since: 2.0.0

ags_file_add_launch ()

void
ags_file_add_launch (AgsFile *file,
                     GObject *file_launch);

Add file_launch for later invoking.

Parameters

file	the AgsFile
file_launch	a AgsFileLaunch

Since: 2.0.0

ags_file_open ()

void
ags_file_open (AgsFile *file,
               GError **error);

Opens the file specified by :filename property.

Parameters

file	the AgsFile
error	the return location for errors

Since: 2.0.0

ags_file_open_from_data ()

void
ags_file_open_from_data (AgsFile *file,
                         gchar *data,
                         guint length,
                         GError **error);

Opens the file provided by data .

Parameters

file	the AgsFile
data	a buffer containing the XML document
length	the buffer length
error	the return location for errors

Since: 2.0.0

ags_file_rw_open ()

void
ags_file_rw_open (AgsFile *file,
                  gboolean create,
                  GError **error);

Opens the file specified by :filename property in read-write mode.

Parameters

file	the AgsFile
create	if `TRUE` create the file as needed
error	the return location for errors

Since: 2.0.0

ags_file_open_filename ()

void
ags_file_open_filename (AgsFile *file,
                        gchar *filename);

Opens the file specified by filename property.

Parameters

file	the AgsFile
filename	a path

Since: 2.0.0

ags_file_close ()

void
ags_file_close (AgsFile *file);

Closes file .

Parameters

file

the AgsFile

Since: 2.0.0

ags_file_write ()

void
ags_file_write (AgsFile *file);

Write the XML document to disk.

Parameters

file

the AgsFile

Since: 2.0.0

ags_file_write_concurrent ()

void
ags_file_write_concurrent (AgsFile *file);

ags_file_write_resolve ()

void
ags_file_write_resolve (AgsFile *file);

Resolve references to XPath expressions.

Parameters

file

the AgsFile

Since: 2.0.0

ags_file_read ()

void
ags_file_read (AgsFile *file);

Read XML document from disk.

Parameters

file

the AgsFile

Since: 2.0.0

ags_file_read_resolve ()

void
ags_file_read_resolve (AgsFile *file);

ags_file_read_start ()

void
ags_file_read_start (AgsFile *file);

Update or start the application.

Parameters

file

the AgsFile

Since: 2.0.0

ags_file_read_config ()

void
ags_file_read_config (AgsFile *file,
                      xmlNode *node,
                      GObject **ags_config);

ags_file_write_config ()

void
ags_file_write_config (AgsFile *file,
                       xmlNode *parent,
                       GObject *ags_config);

ags_file_read_application_context ()

void
ags_file_read_application_context (AgsFile *file,
                                   xmlNode *node,
                                   GObject **application_context);

ags_file_write_application_context ()

void
ags_file_write_application_context (AgsFile *file,
                                    xmlNode *parent,
                                    GObject *application_context);

ags_file_new ()

AgsFile *
ags_file_new ();

Creates an AgsFile

Returns

a new AgsFile

Since: 2.0.0

AGS_FILE()

#define AGS_FILE(obj)                (G_TYPE_CHECK_INSTANCE_CAST((obj), AGS_TYPE_FILE, AgsFile))

AGS_FILE_CLASS()

#define AGS_FILE_CLASS(class)        (G_TYPE_CHECK_CLASS_CAST((class), AGS_TYPE_FILE, AgsFileClass))

AGS_FILE_GET_CLASS()

#define AGS_FILE_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), AGS_TYPE_FILE, AgsFileClass))

AGS_IS_FILE()

#define AGS_IS_FILE(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), AGS_TYPE_FILE))

ags_file_get_type ()

GType
ags_file_get_type (void);

Types and Values

AGS_FILE_DEFAULT_ENCODING

#define AGS_FILE_DEFAULT_ENCODING "UTF-8"

AGS_FILE_DEFAULT_DTD

#define AGS_FILE_DEFAULT_DTD "ags_file.dtd"

AGS_FILE_CHECKSUM_LENGTH

#define AGS_FILE_CHECKSUM_LENGTH (32)

AGS_FILE_DEFAULT_AUDIO_FORMAT

#define AGS_FILE_DEFAULT_AUDIO_FORMAT "raw"

AGS_FILE_DEFAULT_AUDIO_ENCODING

#define AGS_FILE_DEFAULT_AUDIO_ENCODING "base64"

enum AgsFileFlags

Enum values to control the behavior or indicate internal state of AgsFile by enable/disable as flags.

Members

AGS_FILE_READ	opened file for reading
AGS_FILE_READ_AUDIO_SIGNAL	read audio signal
AGS_FILE_READ_EMBEDDED_AUDIO	read embedded audio data
AGS_FILE_WRITE	opened file for writing
AGS_FILE_WRITE_AUDIO_SIGNAL	write audio signal
AGS_FILE_WRITE_EMBEDDED_AUDIO	write embedded audio data

AGS_FILE_ERROR

#define AGS_FILE_ERROR (ags_file_error_quark())

enum AgsFileError

Enum values to indicated failures to used with GError.

Members

AGS_FILE_ERROR_PARSER_FAILURE

the parser failed

AGS_TYPE_FILE

#define AGS_TYPE_FILE                (ags_file_get_type())

struct AgsFile

struct AgsFile;

struct AgsFileClass

struct AgsFileClass {
  GObjectClass object;

  void (*open)(AgsFile *file,
	       GError **error);
  void (*open_from_data)(AgsFile *file,
			 gchar *data, guint length,
			 GError **error);
  void (*rw_open)(AgsFile *file,
		  gboolean create,
		  GError **error);

  void (*write)(AgsFile *file);
  void (*write_concurrent)(AgsFile *file);
  void (*write_resolve)(AgsFile *file);

  void (*read)(AgsFile *file);
  void (*read_resolve)(AgsFile *file);
  void (*read_start)(AgsFile *file);
};

Property Details

The `“application-context”` property

  “application-context”      AgsApplicationContext *

The application context assigned with.

Flags: Read / Write

Since: 2.0.0

The `“audio-encoding”` property

  “audio-encoding”           gchar *

The encoding to use for embedding audio data.

Flags: Read / Write

Default value: "base64"

Since: 2.0.0

The `“audio-format”` property

  “audio-format”             gchar *

The format of embedded audio data.

Flags: Read / Write

Default value: "raw"

Since: 2.0.0

The `“encoding”` property

  “encoding”                 gchar *

The charset encoding to use.

Flags: Read / Write

Default value: NULL

Since: 2.0.0

The `“filename”` property

  “filename”                 gchar *

The assigned filename to open and read from.

Flags: Read / Write

Default value: NULL

Since: 2.0.0

The `“xml-doc”` property

  “xml-doc”                  gpointer

The assigned xml-doc.

Flags: Read / Write

Since: 2.0.0

Signal Details

The `“open”` signal

void
user_function (AgsFile *file,
               gpointer error,
               gpointer user_data)

Open file with appropriate filename.

Parameters

file	the AgsFile
error	a GError pointer to return error
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“open-from-data”` signal

void
user_function (AgsFile *file,
               gchar   *create,
               guint    error,
               gpointer arg3,
               gpointer user_data)

Open file in read-write mode.

Parameters

file	the AgsFile
create	if `TRUE` the file will be created if not exists
error	a GError pointer to return error
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“read”` signal

void
user_function (AgsFile *file,
               gpointer user_data)

Read a XML document from disk with specified filename.

Parameters

file	the AgsFile
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“read-resolve”` signal

void
user_function (AgsFile *file,
               gpointer user_data)

Resolve XPath expressions to their counterpart the newly created instances refering to.

Parameters

file	the AgsFile
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“read-start”` signal

void
user_function (AgsFile *file,
               gpointer user_data)

Hook after reading XML document to update or start the application.

Parameters

file	the AgsFile
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“rw-open”` signal

void
user_function (AgsFile *agsfile,
               gboolean arg1,
               gpointer arg2,
               gpointer user_data)

Flags: Run Last

The `“write”` signal

void
user_function (AgsFile *file,
               gpointer user_data)

Write XML Document to disk.

Parameters

file	the AgsFile
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

The `“write-concurrent”` signal

void
user_function (AgsFile *agsfile,
               gpointer user_data)

Flags: Run Last

The `“write-resolve”` signal

void
user_function (AgsFile *file,
               gpointer user_data)

Resolve references and generate thus XPath expressions just before writing to disk.

Parameters

file	the AgsFile
user_data	user data set when the signal handler was connected.

Flags: Run Last

Since: 2.0.0

AgsFile

Functions

Properties

Signals

Types and Values

Object Hierarchy

Includes

Description

Functions

ags_file_get_class_mutex ()

Returns

ags_file_str2md5 ()

Parameters

Returns

ags_file_add_id_ref ()

Parameters

ags_file_find_id_ref_by_node ()

ags_file_find_id_ref_by_xpath ()

Parameters

Returns

ags_file_find_id_ref_by_reference ()

Parameters

Returns

ags_file_add_lookup ()

Parameters

ags_file_add_launch ()

Parameters

ags_file_open ()

Parameters

ags_file_open_from_data ()

Parameters

ags_file_rw_open ()

Parameters

ags_file_open_filename ()

Parameters

ags_file_close ()

Parameters

ags_file_write ()

Parameters

ags_file_write_concurrent ()

ags_file_write_resolve ()

Parameters

ags_file_read ()

Parameters

ags_file_read_resolve ()

ags_file_read_start ()

Parameters

ags_file_read_config ()

ags_file_write_config ()

ags_file_read_application_context ()

ags_file_write_application_context ()

ags_file_new ()

Returns

AGS_FILE()

AGS_FILE_CLASS()

AGS_FILE_GET_CLASS()

AGS_IS_FILE()

ags_file_get_type ()

Types and Values

AGS_FILE_DEFAULT_ENCODING

AGS_FILE_DEFAULT_DTD

AGS_FILE_CHECKSUM_LENGTH

AGS_FILE_DEFAULT_AUDIO_FORMAT

AGS_FILE_DEFAULT_AUDIO_ENCODING

enum AgsFileFlags

Members

AGS_FILE_ERROR

enum AgsFileError

Members

AGS_TYPE_FILE

struct AgsFile

struct AgsFileClass

Property Details

The “application-context” property

The “audio-encoding” property

The “audio-format” property

The “encoding” property

The “filename” property

The “xml-doc” property

Signal Details

The `“application-context”` property

The `“audio-encoding”` property

The `“audio-format”` property

The `“encoding”` property

The `“filename”` property

The `“xml-doc”` property

The `“open”` signal

The `“open-from-data”` signal

The `“read”` signal

The `“read-resolve”` signal

The `“read-start”` signal

The `“rw-open”` signal

The `“write”` signal

The `“write-concurrent”` signal

The `“write-resolve”` signal