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Tags: more and better getters/adder factorizations

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This commit is contained in:
François Laignel 2018-07-11 23:05:58 +02:00 committed by Sebastian Dröge
parent 7ca54cf1c5
commit 02a8e9faa0
1 changed files with 7 additions and 35 deletions
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42
gstreamer/src/tags.rs
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@ -14,7 +14,7 @@ use std::mem;
use ffi;
use glib;
use glib::translate::{from_glib, from_glib_full, ToGlib, ToGlibPtr, ToGlibPtrMut};
use glib::value::{FromValueOptional, SendValue, SetValue, ToSendValue, TypedValue, Value};
use glib::value::{FromValueOptional, SendValue, SetValue, ToSendValue, TypedValue};
use glib::StaticType;
use miniobject::*;
@ -177,16 +177,8 @@ impl TagListRef {
where
T::TagType: ToSendValue,
{
unsafe {
let v = value.to_send_value();
ffi::gst_tag_list_add_value(
self.as_mut_ptr(),
mode.to_glib(),
T::tag_name().to_glib_none().0,
v.to_glib_none().0,
);
}
// result can be safely ignored here as `value`'s type is tied to `T::tag_name()`
let _res = self.add_generic(T::tag_name(), value, mode);
}
pub fn add_generic<T>(
@ -220,21 +212,8 @@ impl TagListRef {
}
pub fn get<'a, T: Tag<'a>>(&self) -> Option<TypedValue<T::TagType>> {
unsafe {
let mut value: Value = mem::zeroed();
let found: bool = from_glib(ffi::gst_tag_list_copy_value(
value.to_glib_none_mut().0,
self.as_ptr(),
T::tag_name().to_glib_none().0,
));
if !found {
return None;
}
value.downcast().ok()
}
self.get_generic(T::tag_name())
.and_then(|value| value.downcast().ok())
}
pub fn get_generic(&self, tag_name: &str) -> Option<SendValue> {
@ -265,14 +244,7 @@ impl TagListRef {
pub fn get_index<'a, T: Tag<'a>>(&'a self, idx: u32) -> Option<&'a TypedValue<T::TagType>> {
self.get_index_generic(T::tag_name(), idx)
.and_then(|value| unsafe {
let value = value.to_glib_none().0;
if (*value).g_type != T::TagType::static_type().to_glib() {
return None;
}
Some(&*(value as *const TypedValue<T::TagType>))
})
.and_then(|value| value.downcast_ref())
}
pub fn get_index_generic<'a>(&'a self, tag_name: &str, idx: u32) -> Option<&'a SendValue> {
@ -292,7 +264,7 @@ impl TagListRef {
}
pub fn get_size<'a, T: Tag<'a>>(&self) -> u32 {
unsafe { ffi::gst_tag_list_get_tag_size(self.as_ptr(), T::tag_name().to_glib_none().0) }
self.get_size_by_name(T::tag_name())
}
pub fn get_size_by_name(&self, tag_name: &str) -> u32 {