Add support for logging via slog

gst-plugin-file/Cargo.toml

@@ -8,6 +8,7 @@ license = "LGPL-2.1+"
 [dependencies]
 url = "1.1"
 gst-plugin = { path="../gst-plugin" }
+slog = "1.3"
 
 [lib]
 name = "gstrsfile"

gst-plugin-file/src/filesink.rs

@@ -25,6 +25,10 @@ use std::convert::From;
 use gst_plugin::error::*;
 use gst_plugin::sink::*;
 use gst_plugin::buffer::*;
+use gst_plugin::utils::*;
+use gst_plugin::log::*;
+
+use slog::*;
 
 #[derive(Debug)]
 enum StreamingState {
@@ -35,15 +39,23 @@ enum StreamingState {
 #[derive(Debug)]
 pub struct FileSink {
     streaming_state: StreamingState,
+    logger: Logger,
 }
 
 impl FileSink {
-    pub fn new() -> FileSink {
-        FileSink { streaming_state: StreamingState::Stopped }
+    pub fn new(element: Element) -> FileSink {
+        FileSink {
+            streaming_state: StreamingState::Stopped,
+            logger: Logger::root(GstDebugDrain::new(Some(&element),
+                                                    "rsfilesink",
+                                                    0,
+                                                    "Rust file sink"),
+                                 None),
+        }
     }
 
-    pub fn new_boxed() -> Box<Sink> {
-        Box::new(FileSink::new())
+    pub fn new_boxed(element: Element) -> Box<Sink> {
+        Box::new(FileSink::new(element))
     }
 }
 

gst-plugin-file/src/filesrc.rs

@@ -23,6 +23,10 @@ use url::Url;
 use gst_plugin::error::*;
 use gst_plugin::source::*;
 use gst_plugin::buffer::*;
+use gst_plugin::log::*;
+use gst_plugin::utils::*;
+
+use slog::*;
 
 #[derive(Debug)]
 enum StreamingState {
@@ -33,15 +37,23 @@ enum StreamingState {
 #[derive(Debug)]
 pub struct FileSrc {
     streaming_state: StreamingState,
+    logger: Logger,
 }
 
 impl FileSrc {
-    pub fn new() -> FileSrc {
-        FileSrc { streaming_state: StreamingState::Stopped }
+    pub fn new(element: Element) -> FileSrc {
+        FileSrc {
+            streaming_state: StreamingState::Stopped,
+            logger: Logger::root(GstDebugDrain::new(Some(&element),
+                                                    "rsfilesrc",
+                                                    0,
+                                                    "Rust file source"),
+                                 None),
+        }
     }
 
-    pub fn new_boxed() -> Box<Source> {
-        Box::new(FileSrc::new())
+    pub fn new_boxed(element: Element) -> Box<Source> {
+        Box::new(FileSrc::new(element))
     }
 }
 

gst-plugin-file/src/lib.rs

@@ -19,6 +19,8 @@
 
 extern crate url;
 #[macro_use]
+extern crate slog;
+#[macro_use]
 extern crate gst_plugin;
 
 use gst_plugin::plugin::*;

gst-plugin-file/src/lib.rs.bk

-//  Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
-//
-//  This library is free software; you can redistribute it and/or
-//  modify it under the terms of the GNU Library General Public
-//  License as published by the Free Software Foundation; either
-//  version 2 of the License, or (at your option) any later version.
-//
-//  This library 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
-//  Library General Public License for more details.
-//
-//  You should have received a copy of the GNU Library General Public
-//  License along with this library; if not, write to the
-//  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
-//  Boston, MA 02110-1301, USA.
-
-#![crate_type="cdylib"]
-
-extern crate url;
-#[macro_use]
-extern crate gst_plugin;
-
-use gst_plugin::plugin::*;
-use gst_plugin::source::*;
-use gst_plugin::sink::*;
-
-mod filesrc;
-mod filesink;
-
-use filesrc::FileSrc;
-use filesink::FileSink;
-
-fn plugin_init(plugin: &Plugin) -> bool {
-    source_register(plugin,
-                    &SourceInfo {
-                        name: "rsfilesrc",
-                        long_name: "File Source",
-                        description: "Reads local files",
-                        classification: "Source/File",
-                        author: "Sebastian Dröge <sebastian@centricular.com>",
-                        rank: 256 + 100,
-                        create_instance: FileSrc::new_boxed,
-                        protocols: "file",
-                        push_only: false,
-    });
-
-    sink_register(plugin,
-                  &SinkInfo {
-                      name: "rsfilesink",
-                      long_name: "File Sink",
-                      description: "Writes to local files",
-                      classification: "Sink/File",
-                      author: "Luis de Bethencourt <luisbg@osg.samsung.com>",
-                      rank: 256 + 100,
-                      create_instance: FileSink::new_boxed,
-                      protocols: "file",
-                  });
-
-    true
-}
-
-plugin_define!(b"rsfile\0",
-               b"Rust File Plugin\0",
-               plugin_init,
-               b"1.0\0",
-               b"LGPL\0",
-               b"rsfile\0",
-               b"rsfile\0",
-               b"https://github.com/sdroege/rsplugin\0",
-               b"2016-12-08\0");

gst-plugin-flv/Cargo.toml

@@ -8,6 +8,7 @@ license = "LGPL-2.1+"
 [dependencies]
 url = "1.1"
 gst-plugin = { path="../gst-plugin" }
+slog = "1.3"
 nom = "2.0"
 flavors = {git = "https://github.com/sdroege/flavors.git"}
 

gst-plugin-flv/src/flvdemux.rs

@@ -27,6 +27,10 @@ use gst_plugin::demuxer::*;
 use gst_plugin::buffer::*;
 use gst_plugin::adapter::*;
 use gst_plugin::utils;
+use gst_plugin::utils::Element;
+use gst_plugin::log::*;
+
+use slog::*;
 
 const AUDIO_STREAM_ID: u32 = 0;
 const VIDEO_STREAM_ID: u32 = 1;
@@ -383,6 +387,7 @@ impl Metadata {
 
 #[derive(Debug)]
 pub struct FlvDemux {
+    logger: Logger,
     state: State,
     adapter: Adapter,
     // Only in >= State::Streaming
@@ -390,16 +395,21 @@ pub struct FlvDemux {
 }
 
 impl FlvDemux {
-    pub fn new() -> FlvDemux {
+    pub fn new(element: Element) -> FlvDemux {
         FlvDemux {
+            logger: Logger::root(GstDebugDrain::new(Some(&element),
+                                                    "rsflvdemux",
+                                                    0,
+                                                    "Rust FLV demuxer"),
+                                 None),
             state: State::Stopped,
             adapter: Adapter::new(),
             streaming_state: None,
         }
     }
 
-    pub fn new_boxed() -> Box<Demuxer> {
-        Box::new(FlvDemux::new())
+    pub fn new_boxed(element: Element) -> Box<Demuxer> {
+        Box::new(FlvDemux::new(element))
     }
 
     fn handle_script_tag(&mut self,

gst-plugin-flv/src/lib.rs

@@ -21,6 +21,8 @@ extern crate url;
 #[macro_use]
 extern crate gst_plugin;
 #[macro_use]
+extern crate slog;
+#[macro_use]
 extern crate nom;
 extern crate flavors;
 

gst-plugin-http/Cargo.toml

@@ -9,6 +9,7 @@ license = "LGPL-2.1+"
 url = "1.1"
 gst-plugin = { path="../gst-plugin" }
 reqwest = "0.2"
+slog = "1.3"
 
 [lib]
 name = "gstrshttp"

gst-plugin-http/src/httpsrc.rs

@@ -25,6 +25,10 @@ use reqwest::header::{ContentLength, ContentRange, ContentRangeSpec, Range, Byte
 use gst_plugin::error::*;
 use gst_plugin::source::*;
 use gst_plugin::buffer::*;
+use gst_plugin::utils::*;
+use gst_plugin::log::*;
+
+use slog::*;
 
 #[derive(Debug)]
 enum StreamingState {
@@ -43,19 +47,25 @@ enum StreamingState {
 #[derive(Debug)]
 pub struct HttpSrc {
     streaming_state: StreamingState,
+    logger: Logger,
     client: Client,
 }
 
 impl HttpSrc {
-    pub fn new() -> HttpSrc {
+    pub fn new(element: Element) -> HttpSrc {
         HttpSrc {
             streaming_state: StreamingState::Stopped,
+            logger: Logger::root(GstDebugDrain::new(Some(&element),
+                                                    "rshttpsink",
+                                                    0,
+                                                    "Rust http sink"),
+                                 None),
             client: Client::new().unwrap(),
         }
     }
 
-    pub fn new_boxed() -> Box<Source> {
-        Box::new(HttpSrc::new())
+    pub fn new_boxed(element: Element) -> Box<Source> {
+        Box::new(HttpSrc::new(element))
     }
 
     fn do_request(&self,

gst-plugin-http/src/lib.rs

@@ -21,6 +21,8 @@ extern crate url;
 #[macro_use]
 extern crate gst_plugin;
 extern crate reqwest;
+#[macro_use]
+extern crate slog;
 
 use gst_plugin::plugin::*;
 use gst_plugin::source::*;

gst-plugin/Cargo.toml

@@ -10,6 +10,7 @@ license = "LGPL-2.1+"
 libc = "0.2"
 url = "1.1"
 bitflags = "0.7"
+slog = "1.3"
 
 [build-dependencies]
 gcc = "0.3"

gst-plugin/build.rs

@@ -23,7 +23,7 @@ fn main() {
     let gstbase = pkg_config::probe_library("gstreamer-base-1.0").unwrap();
     let includes = [gstreamer.include_paths, gstbase.include_paths];
 
-    let files = ["src/error.c", "src/buffer.c", "src/source.c", "src/sink.c", "src/demuxer.c"];
+    let files = ["src/error.c", "src/buffer.c", "src/log.c", "src/source.c", "src/sink.c", "src/demuxer.c"];
 
     let mut config = gcc::Config::new();
     config.include("src");

gst-plugin/src/demuxer.rs

@@ -343,9 +343,10 @@ impl DemuxerWrapper {
 
 #[no_mangle]
 pub extern "C" fn demuxer_new(demuxer: *mut c_void,
-                              create_instance: fn() -> Box<Demuxer>)
+                              create_instance: fn(Element) -> Box<Demuxer>)
                               -> *mut DemuxerWrapper {
-    Box::into_raw(Box::new(DemuxerWrapper::new(demuxer, create_instance())))
+    let instance = create_instance(unsafe { Element::new(demuxer) });
+    Box::into_raw(Box::new(DemuxerWrapper::new(demuxer, instance)))
 }
 
 #[no_mangle]
@@ -451,7 +452,7 @@ pub struct DemuxerInfo<'a> {
     pub classification: &'a str,
     pub author: &'a str,
     pub rank: i32,
-    pub create_instance: fn() -> Box<Demuxer>,
+    pub create_instance: fn(Element) -> Box<Demuxer>,
     pub input_formats: &'a str,
     pub output_formats: &'a str,
 }
@@ -480,7 +481,7 @@ pub fn demuxer_register(plugin: &Plugin, demuxer_info: &DemuxerInfo) {
     let coutput_formats = CString::new(demuxer_info.output_formats).unwrap();
 
     unsafe {
-        gst_rs_demuxer_register(plugin.to_raw(),
+        gst_rs_demuxer_register(plugin.as_ptr(),
                                 cname.as_ptr(),
                                 clong_name.as_ptr(),
                                 cdescription.as_ptr(),

gst-plugin/src/error.c

@@ -26,4 +26,3 @@ gst_rs_element_error (GstElement * element, GQuark error_domain,
   gst_element_message_full (element, GST_MESSAGE_ERROR, error_domain,
       error_code, g_strdup (message), g_strdup (debug), file, function, line);
 }
-

gst-plugin/src/lib.rs

@@ -20,6 +20,8 @@ extern crate libc;
 extern crate url;
 #[macro_use]
 extern crate bitflags;
+#[macro_use]
+extern crate slog;
 
 #[macro_use]
 pub mod utils;
@@ -32,4 +34,4 @@ pub mod plugin;
 pub mod source;
 pub mod sink;
 pub mod demuxer;
-
+pub mod log;

gst-plugin/src/log.c

+/* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <gst/gst.h>
+
+void
+gst_rs_debug_log (GstDebugCategory * category,
+    GstDebugLevel level,
+    const gchar * file,
+    const gchar * function, gint line, GObject * object, const gchar * message)
+{
+  gst_debug_log (category, level, file, function, line, object, "%s", message);
+}

gst-plugin/src/log.rs

+//  Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Library General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library 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
+//  Library General Public License for more details.
+//
+//  You should have received a copy of the GNU Library General Public
+//  License along with this library; if not, write to the
+//  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+//  Boston, MA 02110-1301, USA.
+
+use std::os::raw::c_void;
+use libc::c_char;
+use std::ffi::CString;
+use slog::{Drain, Record, OwnedKeyValueList, Never, Level};
+use std::fmt;
+use std::ptr;
+
+use utils::Element;
+
+#[derive(Debug)]
+pub struct GstDebugDrain {
+    category: *const c_void,
+    element: *const c_void,
+}
+
+impl GstDebugDrain {
+    pub fn new(element: Option<&Element>,
+               name: &str,
+               color: u32,
+               description: &str)
+               -> GstDebugDrain {
+        extern "C" {
+            fn _gst_debug_category_new(name: *const c_char,
+                                       color: u32,
+                                       description: *const c_char)
+                                       -> *const c_void;
+        }
+
+        let name_cstr = CString::new(name.as_bytes()).unwrap();
+        let description_cstr = CString::new(description.as_bytes()).unwrap();
+
+        // Gets the category if it exists already
+        let category = unsafe {
+            _gst_debug_category_new(name_cstr.as_ptr(), color, description_cstr.as_ptr())
+        };
+
+        let element = match element {
+            Some(element) => unsafe { element.as_ptr() },
+            None => ptr::null(),
+        };
+
+        let drain = GstDebugDrain {
+            category: category,
+            element: ptr::null(),
+        };
+
+        extern "C" {
+            fn g_weak_ref_set(weak_ref: &*const c_void, obj: *const c_void);
+        }
+
+        if !element.is_null() {
+            unsafe {
+                g_weak_ref_set(&drain.element, element);
+            }
+        }
+
+        drain
+    }
+}
+
+impl Drop for GstDebugDrain {
+    fn drop(&mut self) {
+        extern "C" {
+            fn g_weak_ref_clear(weak_ref: &*const c_void);
+        }
+
+        if !self.element.is_null() {
+            unsafe {
+                g_weak_ref_clear(&self.element);
+            }
+        }
+    }
+}
+
+impl Drain for GstDebugDrain {
+    type Error = Never;
+
+    fn log(&self, record: &Record, _: &OwnedKeyValueList) -> Result<(), Never> {
+        extern "C" {
+            fn gst_rs_debug_log(category: *const c_void,
+                                level: u32,
+                                file: *const c_char,
+                                function: *const c_char,
+                                line: u32,
+                                object: *const c_void,
+                                message: *const c_char);
+        }
+
+        let file_cstr = CString::new(record.file().as_bytes()).unwrap();
+
+        // TODO: Probably want to include module?
+        let function_cstr = CString::new(record.function().as_bytes()).unwrap();
+
+        let message_cstr = CString::new(fmt::format(record.msg()).as_bytes()).unwrap();
+
+        let level = match record.level() {
+            Level::Critical | Level::Error => 1,
+            Level::Warning => 2,
+            Level::Info => 4,
+            Level::Debug => 5,
+            Level::Trace => 7,
+        };
+
+        extern "C" {
+            fn g_weak_ref_get(weak_ref: &*const c_void) -> *const c_void;
+            fn gst_object_unref(obj: *const c_void);
+        }
+
+        unsafe {
+            let element = if self.element.is_null() {
+                ptr::null()
+            } else {
+                g_weak_ref_get(&self.element)
+            };
+
+            gst_rs_debug_log(self.category,
+                             level,
+                             file_cstr.as_ptr(),
+                             function_cstr.as_ptr(),
+                             record.line(),
+                             element,
+                             message_cstr.as_ptr());
+
+            if !element.is_null() {
+                gst_object_unref(element);
+            }
+        }
+
+        Ok(())
+    }
+}
+
+unsafe impl Sync for GstDebugDrain {}
+unsafe impl Send for GstDebugDrain {}

gst-plugin/src/plugin.rs

@@ -25,7 +25,7 @@ impl Plugin {
         Plugin(plugin)
     }
 
-    pub unsafe fn to_raw(&self) -> *const c_void {
+    pub unsafe fn as_ptr(&self) -> *const c_void {
         self.0
     }
 }

gst-plugin/src/sink.rs

@@ -177,9 +177,10 @@ impl SinkWrapper {
 
 #[no_mangle]
 pub extern "C" fn sink_new(sink: *mut c_void,
-                           create_instance: fn() -> Box<Sink>)
+                           create_instance: fn(Element) -> Box<Sink>)
                            -> *mut SinkWrapper {
-    Box::into_raw(Box::new(SinkWrapper::new(sink, create_instance())))
+    let instance = create_instance(unsafe { Element::new(sink) });
+    Box::into_raw(Box::new(SinkWrapper::new(sink, instance)))
 }
 
 #[no_mangle]
@@ -258,7 +259,7 @@ pub struct SinkInfo<'a> {
     pub classification: &'a str,
     pub author: &'a str,
     pub rank: i32,
-    pub create_instance: fn() -> Box<Sink>,
+    pub create_instance: fn(Element) -> Box<Sink>,
     pub protocols: &'a str,
 }
 
@@ -284,7 +285,7 @@ pub fn sink_register(plugin: &Plugin, sink_info: &SinkInfo) {
     let cprotocols = CString::new(sink_info.protocols).unwrap();
 
     unsafe {
-        gst_rs_sink_register(plugin.to_raw(),
+        gst_rs_sink_register(plugin.as_ptr(),
                              cname.as_ptr(),
                              clong_name.as_ptr(),
                              cdescription.as_ptr(),