Add bindings for pad probes

Missing for this to be actually useful: Buffer, BufferList, Event, Query bindings

Gir_Gst.toml

@@ -49,6 +49,8 @@ generate = [
     "Gst.ProgressType",
     "Gst.BusSyncReply",
     "Gst.TagMergeMode",
+    "Gst.PadProbeType",
+    "Gst.PadProbeReturn",
 ]
 
 manual = [
@@ -259,6 +261,11 @@ status = "generate"
     # Caps is not a GObject
     ignore = true
 
+    [[object.function]]
+    name = "remove_probe"
+    # Don't use a ulong
+    ignore = true
+
 [[object]]
 name = "Gst.Stream"
 status = "generate"

gstreamer/src/auto/enums.rs

@@ -711,6 +711,72 @@ impl SetValue for PadPresence {
     }
 }
 
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
+pub enum PadProbeReturn {
+    Drop,
+    Ok,
+    Remove,
+    Pass,
+    Handled,
+    #[doc(hidden)]
+    __Unknown(i32),
+}
+
+#[doc(hidden)]
+impl ToGlib for PadProbeReturn {
+    type GlibType = ffi::GstPadProbeReturn;
+
+    fn to_glib(&self) -> ffi::GstPadProbeReturn {
+        match *self {
+            PadProbeReturn::Drop => ffi::GST_PAD_PROBE_DROP,
+            PadProbeReturn::Ok => ffi::GST_PAD_PROBE_OK,
+            PadProbeReturn::Remove => ffi::GST_PAD_PROBE_REMOVE,
+            PadProbeReturn::Pass => ffi::GST_PAD_PROBE_PASS,
+            PadProbeReturn::Handled => ffi::GST_PAD_PROBE_HANDLED,
+            PadProbeReturn::__Unknown(value) => unsafe{std::mem::transmute(value)}
+        }
+    }
+}
+
+#[doc(hidden)]
+impl FromGlib<ffi::GstPadProbeReturn> for PadProbeReturn {
+    fn from_glib(value: ffi::GstPadProbeReturn) -> Self {
+        skip_assert_initialized!();
+        match value as i32 {
+            0 => PadProbeReturn::Drop,
+            1 => PadProbeReturn::Ok,
+            2 => PadProbeReturn::Remove,
+            3 => PadProbeReturn::Pass,
+            4 => PadProbeReturn::Handled,
+            value => PadProbeReturn::__Unknown(value),
+        }
+    }
+}
+
+impl StaticType for PadProbeReturn {
+    fn static_type() -> Type {
+        unsafe { from_glib(ffi::gst_pad_probe_return_get_type()) }
+    }
+}
+
+impl<'a> FromValueOptional<'a> for PadProbeReturn {
+    unsafe fn from_value_optional(value: &Value) -> Option<Self> {
+        Some(FromValue::from_value(value))
+    }
+}
+
+impl<'a> FromValue<'a> for PadProbeReturn {
+    unsafe fn from_value(value: &Value) -> Self {
+        from_glib(std::mem::transmute::<i32, ffi::GstPadProbeReturn>(gobject_ffi::g_value_get_enum(value.to_glib_none().0)))
+    }
+}
+
+impl SetValue for PadProbeReturn {
+    unsafe fn set_value(value: &mut Value, this: &Self) {
+        gobject_ffi::g_value_set_enum(value.to_glib_none_mut().0, this.to_glib() as i32)
+    }
+}
+
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
 pub enum ParseError {
     Syntax,

gstreamer/src/auto/flags.rs

@@ -8,6 +8,74 @@ use glib::value::{Value, SetValue, FromValue, FromValueOptional};
 use gobject_ffi;
 use glib::translate::*;
 
+bitflags! {
+    pub struct PadProbeType: u32 {
+        const PAD_PROBE_TYPE_INVALID = 0;
+        const PAD_PROBE_TYPE_IDLE = 1;
+        const PAD_PROBE_TYPE_BLOCK = 2;
+        const PAD_PROBE_TYPE_BUFFER = 16;
+        const PAD_PROBE_TYPE_BUFFER_LIST = 32;
+        const PAD_PROBE_TYPE_EVENT_DOWNSTREAM = 64;
+        const PAD_PROBE_TYPE_EVENT_UPSTREAM = 128;
+        const PAD_PROBE_TYPE_EVENT_FLUSH = 256;
+        const PAD_PROBE_TYPE_QUERY_DOWNSTREAM = 512;
+        const PAD_PROBE_TYPE_QUERY_UPSTREAM = 1024;
+        const PAD_PROBE_TYPE_PUSH = 4096;
+        const PAD_PROBE_TYPE_PULL = 8192;
+        const PAD_PROBE_TYPE_BLOCKING = 3;
+        const PAD_PROBE_TYPE_DATA_DOWNSTREAM = 112;
+        const PAD_PROBE_TYPE_DATA_UPSTREAM = 128;
+        const PAD_PROBE_TYPE_DATA_BOTH = 240;
+        const PAD_PROBE_TYPE_BLOCK_DOWNSTREAM = 114;
+        const PAD_PROBE_TYPE_BLOCK_UPSTREAM = 130;
+        const PAD_PROBE_TYPE_EVENT_BOTH = 192;
+        const PAD_PROBE_TYPE_QUERY_BOTH = 1536;
+        const PAD_PROBE_TYPE_ALL_BOTH = 1776;
+        const PAD_PROBE_TYPE_SCHEDULING = 12288;
+    }
+}
+
+#[doc(hidden)]
+impl ToGlib for PadProbeType {
+    type GlibType = ffi::GstPadProbeType;
+
+    fn to_glib(&self) -> ffi::GstPadProbeType {
+        ffi::GstPadProbeType::from_bits_truncate(self.bits())
+    }
+}
+
+#[doc(hidden)]
+impl FromGlib<ffi::GstPadProbeType> for PadProbeType {
+    fn from_glib(value: ffi::GstPadProbeType) -> PadProbeType {
+        skip_assert_initialized!();
+        PadProbeType::from_bits_truncate(value.bits())
+    }
+}
+
+impl StaticType for PadProbeType {
+    fn static_type() -> Type {
+        unsafe { from_glib(ffi::gst_pad_probe_type_get_type()) }
+    }
+}
+
+impl<'a> FromValueOptional<'a> for PadProbeType {
+    unsafe fn from_value_optional(value: &Value) -> Option<Self> {
+        Some(FromValue::from_value(value))
+    }
+}
+
+impl<'a> FromValue<'a> for PadProbeType {
+    unsafe fn from_value(value: &Value) -> Self {
+        from_glib(ffi::GstPadProbeType::from_bits_truncate(gobject_ffi::g_value_get_flags(value.to_glib_none().0)))
+    }
+}
+
+impl SetValue for PadProbeType {
+    unsafe fn set_value(value: &mut Value, this: &Self) {
+        gobject_ffi::g_value_set_flags(value.to_glib_none_mut().0, this.to_glib().bits())
+    }
+}
+
 bitflags! {
     pub struct SeekFlags: u32 {
         const SEEK_FLAG_NONE = 0;

gstreamer/src/auto/mod.rs

@@ -82,6 +82,7 @@ pub use self::enums::LibraryError;
 pub use self::enums::PadDirection;
 pub use self::enums::PadLinkReturn;
 pub use self::enums::PadPresence;
+pub use self::enums::PadProbeReturn;
 pub use self::enums::ParseError;
 pub use self::enums::PluginError;
 pub use self::enums::ProgressType;
@@ -98,6 +99,29 @@ pub use self::enums::URIError;
 pub use self::enums::URIType;
 
 mod flags;
+pub use self::flags::PadProbeType;
+pub use self::flags::PAD_PROBE_TYPE_INVALID;
+pub use self::flags::PAD_PROBE_TYPE_IDLE;
+pub use self::flags::PAD_PROBE_TYPE_BLOCK;
+pub use self::flags::PAD_PROBE_TYPE_BUFFER;
+pub use self::flags::PAD_PROBE_TYPE_BUFFER_LIST;
+pub use self::flags::PAD_PROBE_TYPE_EVENT_DOWNSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_EVENT_UPSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_EVENT_FLUSH;
+pub use self::flags::PAD_PROBE_TYPE_QUERY_DOWNSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_QUERY_UPSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_PUSH;
+pub use self::flags::PAD_PROBE_TYPE_PULL;
+pub use self::flags::PAD_PROBE_TYPE_BLOCKING;
+pub use self::flags::PAD_PROBE_TYPE_DATA_DOWNSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_DATA_UPSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_DATA_BOTH;
+pub use self::flags::PAD_PROBE_TYPE_BLOCK_DOWNSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_BLOCK_UPSTREAM;
+pub use self::flags::PAD_PROBE_TYPE_EVENT_BOTH;
+pub use self::flags::PAD_PROBE_TYPE_QUERY_BOTH;
+pub use self::flags::PAD_PROBE_TYPE_ALL_BOTH;
+pub use self::flags::PAD_PROBE_TYPE_SCHEDULING;
 pub use self::flags::SeekFlags;
 pub use self::flags::SEEK_FLAG_NONE;
 pub use self::flags::SEEK_FLAG_FLUSH;

gstreamer/src/auto/pad.rs

@@ -20,7 +20,6 @@ use glib::signal::connect;
 use glib::translate::*;
 use glib_ffi;
 use gobject_ffi;
-use libc;
 use std::boxed::Box as Box_;
 use std::mem;
 use std::mem::transmute;
@@ -71,7 +70,7 @@ unsafe impl Sync for Pad {}
 pub trait PadExt {
     //fn activate_mode(&self, mode: /*Ignored*/PadMode, active: bool) -> bool;
 
-    //fn add_probe<P: Into<Option</*Unimplemented*/Fundamental: Pointer>>>(&self, mask: /*Ignored*/PadProbeType, callback: /*Unknown conversion*//*Unimplemented*/PadProbeCallback, user_data: P, destroy_data: /*Unknown conversion*//*Unimplemented*/DestroyNotify) -> libc::c_ulong;
+    //fn add_probe<P: Into<Option</*Unimplemented*/Fundamental: Pointer>>>(&self, mask: PadProbeType, callback: /*Unknown conversion*//*Unimplemented*/PadProbeCallback, user_data: P, destroy_data: /*Unknown conversion*//*Unimplemented*/DestroyNotify) -> libc::c_ulong;
 
     fn can_link<P: IsA<Pad>>(&self, sinkpad: &P) -> bool;
 
@@ -191,8 +190,6 @@ pub trait PadExt {
 
     fn query_position(&self, format: Format) -> Option<i64>;
 
-    fn remove_probe(&self, id: libc::c_ulong);
-
     //fn send_event(&self, event: /*Ignored*/&mut Event) -> bool;
 
     //fn set_activate_function_full<P: Into<Option</*Unimplemented*/Fundamental: Pointer>>>(&self, activate: /*Unknown conversion*//*Unimplemented*/PadActivateFunction, user_data: P, notify: /*Unknown conversion*//*Unimplemented*/DestroyNotify);
@@ -249,7 +246,7 @@ impl<O: IsA<Pad> + IsA<glib::object::Object>> PadExt for O {
     //    unsafe { TODO: call ffi::gst_pad_activate_mode() }
     //}
 
-    //fn add_probe<P: Into<Option</*Unimplemented*/Fundamental: Pointer>>>(&self, mask: /*Ignored*/PadProbeType, callback: /*Unknown conversion*//*Unimplemented*/PadProbeCallback, user_data: P, destroy_data: /*Unknown conversion*//*Unimplemented*/DestroyNotify) -> libc::c_ulong {
+    //fn add_probe<P: Into<Option</*Unimplemented*/Fundamental: Pointer>>>(&self, mask: PadProbeType, callback: /*Unknown conversion*//*Unimplemented*/PadProbeCallback, user_data: P, destroy_data: /*Unknown conversion*//*Unimplemented*/DestroyNotify) -> libc::c_ulong {
     //    unsafe { TODO: call ffi::gst_pad_add_probe() }
     //}
 
@@ -571,12 +568,6 @@ impl<O: IsA<Pad> + IsA<glib::object::Object>> PadExt for O {
         }
     }
 
-    fn remove_probe(&self, id: libc::c_ulong) {
-        unsafe {
-            ffi::gst_pad_remove_probe(self.to_glib_none().0, id);
-        }
-    }
-
     //fn send_event(&self, event: /*Ignored*/&mut Event) -> bool {
     //    unsafe { TODO: call ffi::gst_pad_send_event() }
     //}

gstreamer/src/lib.rs

@@ -61,8 +61,10 @@ pub use tags::*;
 mod element;
 mod bin;
 mod bus;
+mod pad;
 mod gobject;
 pub use bin::BinExtManual;
+pub use pad::PadExtManual;
 pub use gobject::GObjectExtManualGst;
 
 mod value;

gstreamer/src/pad.rs

@@ -0,0 +1,118 @@
+// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use Pad;
+use PadProbeType;
+use PadProbeReturn;
+
+use std::cell::RefCell;
+use std::mem::transmute;
+
+use glib::IsA;
+use glib::translate::{ToGlib, from_glib, from_glib_none};
+use glib::source::CallbackGuard;
+use glib_ffi::gpointer;
+
+use libc;
+
+use ffi;
+
+pub struct PadProbeId(libc::c_ulong);
+
+pub struct PadProbeInfo {
+    pub mask: PadProbeType,
+    pub id: PadProbeId,
+    pub offset: u64,
+    pub size: u32,
+    pub data: Option<PadProbeData>,
+}
+
+pub enum PadProbeData {
+    // Buffer(&Buffer),
+    // BufferList(&BufferList),
+    // Query(&Query),
+    // Event(&Event),
+    Unknown,
+}
+
+pub trait PadExtManual {
+    fn add_probe<F>(&self, mask: PadProbeType, func: F) -> PadProbeId
+    where
+        F: FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static;
+    fn remove_probe(&self, id: PadProbeId);
+}
+
+impl<O: IsA<Pad>> PadExtManual for O {
+    fn add_probe<F>(&self, mask: PadProbeType, func: F) -> PadProbeId
+    where
+        F: FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static,
+    {
+        unsafe {
+            let id = ffi::gst_pad_add_probe(
+                self.to_glib_none().0,
+                mask.to_glib(),
+                Some(trampoline_pad_probe),
+                into_raw_pad_probe(func),
+                Some(destroy_closure_pad_probe),
+            );
+
+            PadProbeId(id)
+        }
+    }
+
+    fn remove_probe(&self, id: PadProbeId) {
+        unsafe {
+            ffi::gst_pad_remove_probe(self.to_glib_none().0, id.0 as libc::c_ulong);
+        }
+    }
+}
+
+unsafe extern "C" fn trampoline_pad_probe(
+    pad: *mut ffi::GstPad,
+    info: *mut ffi::GstPadProbeInfo,
+    func: gpointer,
+) -> ffi::GstPadProbeReturn {
+    let _guard = CallbackGuard::new();
+    let func: &RefCell<
+        Box<FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static>,
+    > = transmute(func);
+
+    let mut probe_info = PadProbeInfo {
+        mask: from_glib((*info).type_),
+        id: PadProbeId((*info).id),
+        offset: (*info).offset,
+        size: (*info).size,
+        data: if (*info).data.is_null() {
+            None
+        } else {
+            Some(PadProbeData::Unknown)
+        },
+    };
+
+    let ret = (&mut *func.borrow_mut())(&from_glib_none(pad), &mut probe_info).to_glib();
+
+    // TODO: Possibly replace info.data
+
+    ret
+}
+
+unsafe extern "C" fn destroy_closure_pad_probe(ptr: gpointer) {
+    let _guard = CallbackGuard::new();
+    Box::<RefCell<Box<FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static>>>::from_raw(ptr as *mut _);
+}
+
+fn into_raw_pad_probe<
+    F: FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static,
+>(
+    func: F,
+) -> gpointer {
+    let func: Box<
+        RefCell<Box<FnMut(&Pad, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static>>,
+    > = Box::new(RefCell::new(Box::new(func)));
+    Box::into_raw(func) as gpointer
+}