mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-02 14:36:41 +00:00
469 lines
12 KiB
C#
469 lines
12 KiB
C#
// glib/IOChannel.cs : IOChannel API wrapper
|
|
//
|
|
// Author: Mike Kestner <mkestner@novell.com>
|
|
//
|
|
// Copyright (c) 2007 Novell, Inc.
|
|
//
|
|
// This program is free software; you can redistribute it and/or
|
|
// modify it under the terms of version 2 of the Lesser GNU General
|
|
// Public License as published by the Free Software Foundation.
|
|
//
|
|
// 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., 59 Temple Place - Suite 330,
|
|
// Boston, MA 02111-1307, USA.
|
|
|
|
|
|
namespace Gst.GLibSharp {
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
using GLib;
|
|
|
|
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
|
|
internal delegate bool IOFuncNative(IntPtr source, int condition, IntPtr data);
|
|
|
|
internal class IOFuncWrapper {
|
|
|
|
IOFunc managed;
|
|
|
|
public IOFuncNative NativeDelegate;
|
|
|
|
public IOFuncWrapper (IOFunc managed)
|
|
{
|
|
this.managed = managed;
|
|
NativeDelegate = new IOFuncNative (NativeCallback);
|
|
}
|
|
bool NativeCallback (IntPtr source, int condition, IntPtr data)
|
|
{
|
|
try {
|
|
return managed (IOChannel.FromHandle (source), (IOCondition) condition);
|
|
} catch (Exception e) {
|
|
ExceptionManager.RaiseUnhandledException (e, false);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace Gst.GLib {
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
using GLibSharp;
|
|
|
|
public class IOChannel : IDisposable, IWrapper {
|
|
|
|
IntPtr handle;
|
|
|
|
private IOChannel(IntPtr handle)
|
|
{
|
|
this.handle = handle;
|
|
}
|
|
|
|
public IOChannel (int fd) : this (g_io_channel_unix_new (fd)) {}
|
|
|
|
public IOChannel (string filename, string mode)
|
|
{
|
|
IntPtr native_filename = Marshaller.StringToPtrGStrdup (filename);
|
|
IntPtr native_mode = Marshaller.StringToPtrGStrdup (mode);
|
|
IntPtr error;
|
|
handle = g_io_channel_new_file(native_filename, native_mode, out error);
|
|
Marshaller.Free (native_filename);
|
|
Marshaller.Free (native_mode);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
}
|
|
|
|
public IOCondition BufferCondition
|
|
{
|
|
get {
|
|
return (IOCondition) g_io_channel_get_buffer_condition (Handle);
|
|
}
|
|
}
|
|
|
|
public bool Buffered
|
|
{
|
|
get {
|
|
return g_io_channel_get_buffered (Handle);
|
|
}
|
|
set {
|
|
g_io_channel_set_buffered (Handle, value);
|
|
}
|
|
}
|
|
|
|
public ulong BufferSize
|
|
{
|
|
get {
|
|
return (ulong) g_io_channel_get_buffer_size (Handle);
|
|
}
|
|
set {
|
|
g_io_channel_set_buffer_size (Handle, new UIntPtr (value));
|
|
}
|
|
}
|
|
|
|
public bool CloseOnUnref
|
|
{
|
|
get {
|
|
return g_io_channel_get_close_on_unref (Handle);
|
|
}
|
|
set {
|
|
g_io_channel_set_close_on_unref (Handle, value);
|
|
}
|
|
}
|
|
|
|
public string Encoding
|
|
{
|
|
get {
|
|
return Marshaller.Utf8PtrToString (g_io_channel_get_encoding (Handle));
|
|
}
|
|
set {
|
|
IntPtr native_encoding = Marshaller.StringToPtrGStrdup (value);
|
|
IntPtr error;
|
|
g_io_channel_set_encoding (Handle, native_encoding, out error);
|
|
Marshaller.Free (native_encoding);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
}
|
|
}
|
|
|
|
public IOFlags Flags
|
|
{
|
|
get {
|
|
return (IOFlags) g_io_channel_get_flags(Handle);
|
|
}
|
|
set {
|
|
IntPtr error;
|
|
g_io_channel_set_flags(Handle, (int) value, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
}
|
|
}
|
|
|
|
public char[] LineTerminator {
|
|
get {
|
|
int length;
|
|
IntPtr raw = g_io_channel_get_line_term (Handle, out length);
|
|
if (length == -1)
|
|
return Marshaller.Utf8PtrToString (raw).ToCharArray ();
|
|
byte[] buffer = new byte [length];
|
|
return System.Text.Encoding.UTF8.GetChars (buffer);
|
|
}
|
|
set {
|
|
byte[] buffer = System.Text.Encoding.UTF8.GetBytes (value);
|
|
g_io_channel_set_line_term (Handle, buffer, buffer.Length);
|
|
}
|
|
}
|
|
|
|
public IntPtr Handle {
|
|
get {
|
|
return handle;
|
|
}
|
|
}
|
|
|
|
public int UnixFd {
|
|
get {
|
|
return g_io_channel_unix_get_fd (Handle);
|
|
}
|
|
}
|
|
|
|
protected void Init ()
|
|
{
|
|
g_io_channel_init (Handle);
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
g_io_channel_unref (Handle);
|
|
}
|
|
|
|
public uint AddWatch (int priority, IOCondition condition, IOFunc func)
|
|
{
|
|
IOFuncWrapper func_wrapper = null;
|
|
IntPtr user_data = IntPtr.Zero;
|
|
DestroyNotify notify = null;
|
|
if (func != null) {
|
|
func_wrapper = new IOFuncWrapper (func);
|
|
user_data = (IntPtr) GCHandle.Alloc (func_wrapper);
|
|
notify = DestroyHelper.NotifyHandler;
|
|
}
|
|
return g_io_add_watch_full (Handle, priority, (int) condition, func_wrapper.NativeDelegate, user_data, notify);
|
|
}
|
|
|
|
public IOStatus Flush ()
|
|
{
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_flush (Handle, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus ReadChars (byte[] buf, out ulong bytes_read)
|
|
{
|
|
UIntPtr native_bytes_read;
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_read_chars (Handle, buf, new UIntPtr ((ulong) buf.Length), out native_bytes_read, out error);
|
|
bytes_read = (ulong) native_bytes_read;
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus ReadLine (out string str_return)
|
|
{
|
|
ulong dump;
|
|
return ReadLine (out str_return, out dump);
|
|
}
|
|
|
|
public IOStatus ReadLine (out string str_return, out ulong terminator_pos)
|
|
{
|
|
IntPtr native_string;
|
|
UIntPtr native_terminator_pos;
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_read_line (Handle, out native_string, IntPtr.Zero, out native_terminator_pos, out error);
|
|
terminator_pos = (ulong) native_terminator_pos;
|
|
str_return = null;
|
|
if (ret == IOStatus.Normal)
|
|
str_return = Marshaller.PtrToStringGFree (native_string);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus ReadToEnd (out string str_return)
|
|
{
|
|
IntPtr native_str;
|
|
UIntPtr native_length;
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_read_to_end (Handle, out native_str, out native_length, out error);
|
|
str_return = null;
|
|
if (ret == IOStatus.Normal) {
|
|
byte[] buffer = new byte [(ulong) native_length];
|
|
Marshal.Copy (native_str, buffer, 0, (int)(ulong) native_length);
|
|
str_return = System.Text.Encoding.UTF8.GetString (buffer);
|
|
}
|
|
Marshaller.Free (native_str);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus ReadUnichar (out uint thechar)
|
|
{
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_read_unichar (Handle, out thechar, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus SeekPosition (long offset, SeekType type)
|
|
{
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_seek_position (Handle, offset, (int) type, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus Shutdown (bool flush)
|
|
{
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_shutdown (Handle, flush, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus WriteChars (string str, out string remainder)
|
|
{
|
|
ulong written;
|
|
System.Text.Encoding enc = System.Text.Encoding.UTF8;
|
|
byte[] buffer = enc.GetBytes (str);
|
|
IOStatus ret = WriteChars (buffer, out written);
|
|
remainder = null;
|
|
if ((int) written == buffer.Length)
|
|
return ret;
|
|
int count = buffer.Length - (int) written;
|
|
byte[] rem = new byte [count];
|
|
Array.Copy (buffer, (int) written, rem, 0, count);
|
|
remainder = enc.GetString (rem);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus WriteChars (byte[] buf, out ulong bytes_written)
|
|
{
|
|
UIntPtr native_bytes_written;
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_write_chars (Handle, buf, new IntPtr (buf.Length), out native_bytes_written, out error);
|
|
bytes_written = (ulong) native_bytes_written;
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public IOStatus WriteUnichar (uint thechar)
|
|
{
|
|
IntPtr error;
|
|
IOStatus ret = (IOStatus) g_io_channel_write_unichar (Handle, thechar, out error);
|
|
if (error != IntPtr.Zero) throw new GException (error);
|
|
return ret;
|
|
}
|
|
|
|
public static IOChannel FromHandle (IntPtr handle)
|
|
{
|
|
if (handle == IntPtr.Zero)
|
|
return null;
|
|
|
|
g_io_channel_ref (handle);
|
|
return new IOChannel (handle);
|
|
}
|
|
|
|
public static IOChannelError ErrorFromErrno (int en)
|
|
{
|
|
return (IOChannelError) g_io_channel_error_from_errno (en);
|
|
}
|
|
|
|
const string libname = "libglib-2.0-0.dll";
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_channel_unix_new (int fd);
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_channel_new_file (IntPtr filename, IntPtr mode, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_error_quark ();
|
|
|
|
[DllImport(libname)]
|
|
static extern int g_io_channel_error_from_errno (int en);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_flush (IntPtr raw, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_init (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_read_chars (IntPtr raw, byte[] buf, UIntPtr count, out UIntPtr bytes_read, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_read_line (IntPtr raw, out IntPtr str_return, IntPtr length, out UIntPtr terminator_pos, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_read_to_end (IntPtr raw, out IntPtr str_return, out UIntPtr length, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_read_unichar (IntPtr raw, out uint thechar, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_seek_position (IntPtr raw, long offset, int type, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_shutdown (IntPtr raw, bool flush, out IntPtr err);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_write_chars (IntPtr raw, byte[] buf, IntPtr count, out UIntPtr bytes_written, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_write_unichar (IntPtr raw, uint thechar, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_get_buffer_condition (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern bool g_io_channel_get_buffered (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_set_buffered (IntPtr raw, bool buffered);
|
|
|
|
[DllImport (libname)]
|
|
static extern UIntPtr g_io_channel_get_buffer_size (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_set_buffer_size (IntPtr raw, UIntPtr size);
|
|
|
|
[DllImport (libname)]
|
|
static extern bool g_io_channel_get_close_on_unref (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_set_close_on_unref (IntPtr raw, bool do_close);
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_channel_get_encoding (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_set_encoding (IntPtr raw, IntPtr encoding, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_get_flags (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_set_flags (IntPtr raw, int flags, out IntPtr error);
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_channel_get_line_term (IntPtr raw, out int length);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_set_line_term (IntPtr raw, byte[] term, int length);
|
|
|
|
[DllImport (libname)]
|
|
static extern int g_io_channel_unix_get_fd (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_channel_ref (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern void g_io_channel_unref (IntPtr raw);
|
|
|
|
[DllImport (libname)]
|
|
static extern uint g_io_add_watch_full (IntPtr raw, int priority, int condition, IOFuncNative func, IntPtr user_data, DestroyNotify notify);
|
|
|
|
[DllImport (libname)]
|
|
static extern IntPtr g_io_create_watch (IntPtr raw, int condition);
|
|
}
|
|
|
|
public delegate bool IOFunc (IOChannel source, IOCondition condition);
|
|
|
|
public enum IOChannelError {
|
|
FileTooBig,
|
|
Inval,
|
|
IO,
|
|
IsDir,
|
|
NoSpace,
|
|
Nxio,
|
|
Overflow,
|
|
Pipe,
|
|
Failed,
|
|
}
|
|
|
|
[Flags]
|
|
public enum IOCondition {
|
|
In = 1 << 0,
|
|
Out = 1 << 2,
|
|
Pri = 1 << 1,
|
|
Err = 1 << 3,
|
|
Hup = 1 << 4,
|
|
Nval = 1 << 5,
|
|
}
|
|
|
|
[Flags]
|
|
public enum IOFlags {
|
|
Append = 1 << 0,
|
|
Nonblock = 1 << 1,
|
|
IsReadable = 1 << 2,
|
|
IsWriteable = 1 << 3,
|
|
IsSeekable = 1 << 4,
|
|
Mask = 1 << 5- 1,
|
|
GetMask = Mask,
|
|
SetMask = Append | Nonblock,
|
|
}
|
|
|
|
public enum IOStatus {
|
|
Error,
|
|
Normal,
|
|
Eof,
|
|
Again,
|
|
}
|
|
|
|
public enum SeekType {
|
|
Cur,
|
|
Set,
|
|
End,
|
|
}
|
|
}
|