gstreamer/gstreamer-sharp/ControlSource.custom
Sebastian Dröge aa7bb8fa1c Use internal glib-sharp copy everywhere and make it work side-by-side with real glib-sharp
glib-sharp will only get a new release with the new API that we need for
3.0 in a year or something. Instead of waiting a year before we can release
something we now have our own internal copy of glib-sharp trunk that will
be dropped once glib-sharp 3.0 is released.

Everything is now compilable and working without any additional patches.
2009-08-05 16:57:20 +02:00

338 lines
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[DllImport ("gstreamersharpglue-0.10.dll") ]
static extern uint gst__controllersharp_gst__controller_controlsource_get_get_value_offset ();
static uint get_value_offset = gst__controllersharp_gst__controller_controlsource_get_get_value_offset ();
[StructLayout (LayoutKind.Sequential) ]
struct GstValueArray {
public IntPtr property_name;
public int nbsamples;
public ulong sample_interval;
public IntPtr values;
}
[StructLayout (LayoutKind.Sequential) ]
struct GstControlSourceCallbacks {
public GetValueCallbackNative get_value;
public GetValueArrayCallbackNative get_value_array;
}
delegate bool GetValueCallbackNative (IntPtr raw, ulong timestamp, ref Gst.GLib.Value val);
delegate bool GetValueArrayCallbackNative (IntPtr raw, ulong timestamp, ref GstValueArray va);
public delegate bool GetValueCallback (ulong timestamp, ref Gst.GLib.Value value);
public delegate System.Array GetValueArrayCallback (ulong timestamp, int nsamples, ulong interval);
private GetValueCallbackWrapper GetValue_cb_wrapper;
private GetValueArrayCallbackWrapper GetValueArray_cb_wrapper;
private class GetValueCallbackWrapper {
public bool NativeCallback (IntPtr raw, ulong timestamp, ref Gst.GLib.Value val) {
try {
bool __ret = managed (timestamp, ref val);
return __ret;
} catch (Exception e) {
Gst.GLib.ExceptionManager.RaiseUnhandledException (e, true);
// NOTREACHED: Above call does not return.
throw e;
}
}
internal GetValueCallbackNative NativeDelegate;
GetValueCallback managed;
public GetValueCallbackWrapper (GetValueCallback managed) {
this.managed = managed;
if (managed != null)
NativeDelegate = new GetValueCallbackNative (NativeCallback);
}
public static GetValueCallback GetManagedDelegate (GetValueCallbackNative native) {
if (native == null)
return null;
GetValueCallbackWrapper wrapper = (GetValueCallbackWrapper) native.Target;
if (wrapper == null)
return null;
return wrapper.managed;
}
}
private class GetValueArrayCallbackWrapper {
public bool NativeCallback (IntPtr raw, ulong timestamp, ref GstValueArray va) {
try {
System.Array values = managed (timestamp, va.nbsamples, va.sample_interval);
if (values == null)
return false;
System.Type t = values.GetType ();
if (t == typeof (string[])) {
string[] ret = (string[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteIntPtr (va.values, i * IntPtr.Size, Gst.GLib.Marshaller.StringToPtrGStrdup (ret[i]));
}
} else if (t == typeof (short[])) {
short[] ret = (short[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt16 (va.values, i * 2, ret[i]);
}
} else if (t == typeof (ushort[])) {
ushort[] ret = (ushort[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt16 (va.values, i * 2, (short) ret[i]);
}
} else if (t == typeof (int[])) {
int[] ret = (int[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt32 (va.values, i * 4, ret[i]);
}
} else if (t == typeof (uint[])) {
uint[] ret = (uint[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt32 (va.values, i * 4, (int) ret[i]);
}
} else if (t == typeof (long[])) {
long[] ret = (long[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt64 (va.values, i * 8, ret[i]);
}
} else if (t == typeof (ulong[])) {
ulong[] ret = (ulong[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt64 (va.values, i * 8, (long) ret[i]);
}
} else if (t == typeof (float[])) {
float[] ret = (float[]) values;
Marshal.Copy (ret, 0, va.values, va.nbsamples);
} else if (t == typeof (double[])) {
double[] ret = (double[]) values;
Marshal.Copy (ret, 0, va.values, va.nbsamples);
} else if (t == typeof (bool[])) {
bool[] ret = (bool[]) values;
for (int i = 0; i < va.nbsamples; i++) {
Marshal.WriteInt32 (va.values, i * 4, ret[i] == false ? 0 : 1);
}
}
return true;
} catch (Exception e) {
Gst.GLib.ExceptionManager.RaiseUnhandledException (e, true);
// NOTREACHED: Above call does not return.
throw e;
}
}
internal GetValueArrayCallbackNative NativeDelegate;
GetValueArrayCallback managed;
public GetValueArrayCallbackWrapper (GetValueArrayCallback managed) {
this.managed = managed;
if (managed != null)
NativeDelegate = new GetValueArrayCallbackNative (NativeCallback);
}
public static GetValueArrayCallback GetManagedDelegate (GetValueArrayCallbackNative native) {
if (native == null)
return null;
GetValueArrayCallbackWrapper wrapper = (GetValueArrayCallbackWrapper) native.Target;
if (wrapper == null)
return null;
return wrapper.managed;
}
}
public void SetCallbacks (GetValueCallback get_value, GetValueArrayCallback get_value_array) {
IntPtr off = new IntPtr (Handle.ToInt64 () + get_value_offset);
GstControlSourceCallbacks cbs = (GstControlSourceCallbacks) Marshal.PtrToStructure (new IntPtr (Handle.ToInt64 () + get_value_offset), typeof (GstControlSourceCallbacks));
GetValueCallbackWrapper gv_wr = new GetValueCallbackWrapper (get_value);
GetValueArrayCallbackWrapper gva_wr = new GetValueArrayCallbackWrapper (get_value_array);
GetValue_cb_wrapper = gv_wr;
GetValueArray_cb_wrapper = gva_wr;
cbs.get_value = gv_wr.NativeCallback;
cbs.get_value_array = gva_wr.NativeCallback;
Marshal.StructureToPtr (cbs, off, false);
}
[DllImport ("gstreamersharpglue-0.10.dll") ]
static extern bool gst__controllersharp_gst__controller_controlsource_base_bind (IntPtr handle, IntPtr pspec);
[DllImport ("gstreamersharpglue-0.10.dll") ]
static extern void gst__controllersharp_gst__controller_controlsource_override_bind (IntPtr gtype, BindNativeDelegate cb);
[Gst.GLib.CDeclCallback]
delegate bool BindNativeDelegate (IntPtr handler, IntPtr pspec);
static BindNativeDelegate Bind_cb_delegate;
static BindNativeDelegate BindVMCallback {
get {
if (Bind_cb_delegate == null)
Bind_cb_delegate = new BindNativeDelegate (Bind_cb);
return Bind_cb_delegate;
}
}
static void OverrideBind (Gst.GLib.GType gtype) {
OverrideBind (gtype, BindVMCallback);
}
static void OverrideBind (Gst.GLib.GType gtype, BindNativeDelegate callback) {
gst__controllersharp_gst__controller_controlsource_override_bind (gtype.Val, callback);
}
static bool Bind_cb (IntPtr inst, IntPtr pspec) {
try {
ControlSource __obj = Gst.GLib.Object.GetObject (inst, false) as ControlSource;
Gst.PropertyInfo pinfo = new Gst.PropertyInfo (pspec);
return __obj.OnBind (pinfo);
} catch (Exception e) {
Gst.GLib.ExceptionManager.RaiseUnhandledException (e, false);
return false;
}
}
[DllImport ("libgobject-2.0-0.dll") ]
static extern IntPtr g_object_class_find_property (IntPtr klass, IntPtr property);
[Gst.GLib.DefaultSignalHandler (Type=typeof (Gst.Controller.ControlSource), ConnectionMethod="OverrideBind") ]
protected virtual bool OnBind (Gst.PropertyInfo pinfo) {
IntPtr klass = Marshal.ReadIntPtr (Handle);
IntPtr native_property = Gst.GLib.Marshaller.StringToPtrGStrdup (pinfo.Name);
IntPtr pspec = g_object_class_find_property (klass, native_property);
Gst.GLib.Marshaller.Free (native_property);
if (pspec == IntPtr.Zero)
return false;
return gst__controllersharp_gst__controller_controlsource_base_bind (this.Handle, pspec);
}
[DllImport ("libgstcontroller-0.10.dll") ]
static extern bool gst_control_source_get_value_array (IntPtr raw, ulong timestamp, ref GstValueArray value_array);
[DllImport ("libglib-2.0-0.dll") ]
static extern IntPtr g_try_malloc (int size);
static readonly Type[] supported_types = new Type[] {
typeof (string),
typeof (short),
typeof (ushort),
typeof (int),
typeof (uint),
typeof (long),
typeof (ulong),
typeof (float),
typeof (double),
typeof (bool)
};
public System.Array GetValueArray (ulong timestamp, int nsamples, ulong interval) {
GstValueArray va = new GstValueArray ();
Gst.GLib.Value v = Gst.GLib.Value.Empty;
if (!GetValue (0, ref v))
return null;
System.Type t = v.Val.GetType ();
v.Dispose ();
bool supported = false;
foreach (System.Type tmp in supported_types)
if (tmp == t)
supported = true;
if (!supported)
throw new Exception ("Unsupported type '" + t + "'");
int eltsize = Marshal.SizeOf (t);
va.values = g_try_malloc (eltsize * nsamples);
if (va.values == IntPtr.Zero)
throw new OutOfMemoryException ();
va.nbsamples = nsamples;
va.sample_interval = interval;
bool raw_ret = gst_control_source_get_value_array (Handle, timestamp, ref va);
if (!raw_ret) {
Gst.GLib.Marshaller.Free (va.values);
return null;
}
System.Array values = Array.CreateInstance (t, nsamples);
if (t == typeof (string)) {
string[] ret = (string[]) values;
for (int i = 0; i < nsamples; i++) {
IntPtr str = Marshal.ReadIntPtr (va.values, i * IntPtr.Size);
ret[i] = Gst.GLib.Marshaller.PtrToStringGFree (str);
}
} else if (t == typeof (short)) {
short[] ret = (short[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = Marshal.ReadInt16 (va.values, i * 2);
}
} else if (t == typeof (ushort)) {
ushort[] ret = (ushort[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = (ushort) Marshal.ReadInt16 (va.values, i * 2);
}
} else if (t == typeof (int)) {
int[] ret = (int[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = Marshal.ReadInt32 (va.values, i * 4);
}
} else if (t == typeof (uint)) {
uint[] ret = (uint[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = (uint) Marshal.ReadInt32 (va.values, i * 4);
}
} else if (t == typeof (long)) {
long[] ret = (long[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = Marshal.ReadInt64 (va.values, i * 8);
}
} else if (t == typeof (ulong)) {
ulong[] ret = (ulong[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = (ulong) Marshal.ReadInt64 (va.values, i * 8);
}
} else if (t == typeof (float)) {
float[] ret = (float[]) values;
Marshal.Copy (va.values, ret, 0, nsamples);
} else if (t == typeof (double)) {
double[] ret = (double[]) values;
Marshal.Copy (va.values, ret, 0, nsamples);
} else if (t == typeof (bool)) {
bool[] ret = (bool[]) values;
for (int i = 0; i < nsamples; i++) {
ret[i] = Marshal.ReadInt32 (va.values, i * 4) != 0;
}
}
Gst.GLib.Marshaller.Free (va.values);
return values;
}