mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-12-23 00:26:31 +00:00
Add bindings for gst::tags::register()
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parent
bd0cbe99b3
commit
598e012568
5 changed files with 172 additions and 3 deletions
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@ -40,6 +40,7 @@ generate = [
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"Gst.StreamFlags",
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"Gst.ProgressType",
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"Gst.BusSyncReply",
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"Gst.TagFlag",
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"Gst.TagMergeMode",
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"Gst.PadProbeType",
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"Gst.PadProbeReturn",
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@ -2387,6 +2387,73 @@ impl SetValue for StructureChangeType {
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}
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}
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#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
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#[derive(Clone, Copy)]
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pub enum TagFlag {
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Undefined,
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Meta,
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Encoded,
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Decoded,
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Count,
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#[doc(hidden)]
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__Unknown(i32),
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}
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#[doc(hidden)]
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impl ToGlib for TagFlag {
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type GlibType = ffi::GstTagFlag;
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fn to_glib(&self) -> ffi::GstTagFlag {
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match *self {
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TagFlag::Undefined => ffi::GST_TAG_FLAG_UNDEFINED,
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TagFlag::Meta => ffi::GST_TAG_FLAG_META,
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TagFlag::Encoded => ffi::GST_TAG_FLAG_ENCODED,
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TagFlag::Decoded => ffi::GST_TAG_FLAG_DECODED,
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TagFlag::Count => ffi::GST_TAG_FLAG_COUNT,
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TagFlag::__Unknown(value) => value
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}
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}
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}
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#[doc(hidden)]
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impl FromGlib<ffi::GstTagFlag> for TagFlag {
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fn from_glib(value: ffi::GstTagFlag) -> Self {
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skip_assert_initialized!();
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match value {
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0 => TagFlag::Undefined,
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1 => TagFlag::Meta,
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2 => TagFlag::Encoded,
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3 => TagFlag::Decoded,
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4 => TagFlag::Count,
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value => TagFlag::__Unknown(value),
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}
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}
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}
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impl StaticType for TagFlag {
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fn static_type() -> Type {
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unsafe { from_glib(ffi::gst_tag_flag_get_type()) }
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}
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}
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impl<'a> FromValueOptional<'a> for TagFlag {
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unsafe fn from_value_optional(value: &Value) -> Option<Self> {
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Some(FromValue::from_value(value))
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}
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}
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impl<'a> FromValue<'a> for TagFlag {
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unsafe fn from_value(value: &Value) -> Self {
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from_glib(gobject_ffi::g_value_get_enum(value.to_glib_none().0))
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}
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}
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impl SetValue for TagFlag {
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unsafe fn set_value(value: &mut Value, this: &Self) {
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gobject_ffi::g_value_set_enum(value.to_glib_none_mut().0, this.to_glib())
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}
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}
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#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
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#[derive(Clone, Copy)]
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pub enum TagMergeMode {
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@ -144,6 +144,7 @@ pub use self::enums::StateChangeReturn;
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pub use self::enums::StreamError;
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pub use self::enums::StreamStatusType;
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pub use self::enums::StructureChangeType;
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pub use self::enums::TagFlag;
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pub use self::enums::TagMergeMode;
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pub use self::enums::TaskState;
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pub use self::enums::TocEntryType;
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@ -335,7 +335,7 @@ pub mod prelude {
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pub use value::GstValueExt;
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pub use miniobject::MiniObject;
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pub use tags::Tag;
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pub use tags::{CustomTag, Tag};
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pub use muldiv::MulDiv;
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@ -1,4 +1,4 @@
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// Copyright (C) 2016-2017 Sebastian Dröge <sebastian@centricular.com>
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// Copyright (C) 2016-2018 Sebastian Dröge <sebastian@centricular.com>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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@ -14,7 +14,9 @@ use std::mem;
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use ffi;
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use glib;
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use glib::translate::{from_glib, from_glib_full, ToGlib, ToGlibPtr, ToGlibPtrMut};
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use glib::value::{FromValueOptional, SendValue, SetValue, ToSendValue, TypedValue};
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use glib::value::{FromValueOptional, SendValue, SetValue, ToSendValue, TypedValue, Value};
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use glib::StaticType;
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use gobject_ffi;
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use miniobject::*;
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@ -765,6 +767,60 @@ impl<'a> DoubleEndedIterator for Iter<'a> {
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impl<'a> ExactSizeIterator for Iter<'a> {}
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pub trait CustomTag<'a>: Tag<'a> {
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const FLAG: ::TagFlag;
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const NICK: &'static str;
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const DESCRIPTION: &'static str;
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fn merge_func(src: &Value) -> Value {
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merge_use_first(src)
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}
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}
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pub fn register<T: for<'a> CustomTag<'a>>() {
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unsafe extern "C" fn merge_func_trampoline<T: for<'a> CustomTag<'a>>(
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dest: *mut gobject_ffi::GValue,
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src: *const gobject_ffi::GValue,
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) {
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*dest = T::merge_func(&*(src as *const Value)).into_raw();
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}
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unsafe {
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ffi::gst_tag_register(
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T::tag_name().to_glib_none().0,
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T::FLAG.to_glib(),
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T::TagType::static_type().to_glib(),
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T::NICK.to_glib_none().0,
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T::DESCRIPTION.to_glib_none().0,
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Some(merge_func_trampoline::<T>),
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)
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}
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}
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pub fn merge_use_first(src: &Value) -> Value {
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assert_eq!(src.type_(), ::List::static_type());
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unsafe {
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use glib::translate::Uninitialized;
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let mut res = Value::uninitialized();
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ffi::gst_tag_merge_use_first(res.to_glib_none_mut().0, src.to_glib_none().0);
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res
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}
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}
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pub fn merge_strings_with_comma(src: &Value) -> Value {
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assert_eq!(src.type_(), ::List::static_type());
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unsafe {
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use glib::translate::Uninitialized;
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let mut res = Value::uninitialized();
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ffi::gst_tag_merge_strings_with_comma(res.to_glib_none_mut().0, src.to_glib_none().0);
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res
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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@ -915,4 +971,48 @@ mod tests {
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assert_eq!(tag_value.get(), Some(::SECOND * 120));
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assert!(tag_iter.next().is_none());
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}
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#[test]
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fn test_custom_tags() {
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::init().unwrap();
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struct MyCustomTag;
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impl<'a> Tag<'a> for MyCustomTag {
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type TagType = &'a str;
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fn tag_name<'b>() -> &'b str {
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"my-custom-tag"
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}
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}
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impl<'a> CustomTag<'a> for MyCustomTag {
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const FLAG: ::TagFlag = ::TagFlag::Meta;
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const NICK: &'static str = "my custom tag";
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const DESCRIPTION: &'static str = "My own custom tag type for testing";
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fn merge_func(src: &Value) -> Value {
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merge_strings_with_comma(src)
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}
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}
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register::<MyCustomTag>();
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let mut tags = TagList::new();
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{
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let tags = tags.get_mut().unwrap();
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tags.add::<MyCustomTag>(&"first one", TagMergeMode::Append);
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}
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assert_eq!(tags.get::<MyCustomTag>().unwrap().get(), Some("first one"));
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{
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let tags = tags.get_mut().unwrap();
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tags.add::<MyCustomTag>(&"second one", TagMergeMode::Append);
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}
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assert_eq!(
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tags.get::<MyCustomTag>().unwrap().get(),
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Some("first one, second one")
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);
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}
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}
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