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https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
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24a00b9929
It can return `NULL` in some cases. The next release will use an `Option` but to keep backwards compatibility here, `NULL` is mapped to the empty string for now. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1274>
62 lines
1.4 KiB
Rust
62 lines
1.4 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use glib::translate::*;
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use crate::{prelude::*, DiscovererStreamInfo};
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#[derive(Debug)]
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pub struct Iter {
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stream_info: Option<DiscovererStreamInfo>,
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direction_forward: bool,
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}
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impl Iterator for Iter {
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type Item = DiscovererStreamInfo;
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fn next(&mut self) -> Option<DiscovererStreamInfo> {
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let current = self.stream_info.take();
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self.stream_info = match current {
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Some(ref c) => {
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// Decide on the direction
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if self.direction_forward {
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c.next()
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} else {
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c.previous()
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}
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}
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None => None,
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};
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current
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}
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}
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impl DiscovererStreamInfo {
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pub fn next_iter(&self) -> Iter {
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Iter {
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stream_info: self.next(),
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direction_forward: true,
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}
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}
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pub fn previous_iter(&self) -> Iter {
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Iter {
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stream_info: self.previous(),
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direction_forward: false,
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}
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}
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fn stream_id(&self) -> glib::GString {
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unsafe {
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let ptr = ffi::gst_discoverer_stream_info_get_stream_id(self.as_ref().to_glib_none().0);
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if ptr.is_null() {
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glib::GString::new()
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} else {
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from_glib_none(ptr)
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}
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}
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}
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}
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impl std::iter::FusedIterator for Iter {}
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