mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-09-27 06:20:05 +00:00
62c0f5ef42
It makes the intentions clearer and potentially results in simpler assembly, at least in debug builds.
730 lines
20 KiB
Rust
730 lines
20 KiB
Rust
// Copyright (C) 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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// // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// // option. This file may not be copied, modified, or distributed
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// // except according to those terms.
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use std::borrow::{Borrow, BorrowMut, ToOwned};
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use std::ffi::CStr;
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use std::fmt;
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use std::mem;
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use std::ops;
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use std::ptr;
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use glib::translate::*;
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use gst;
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use gst::prelude::*;
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use gst_sdp_sys;
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use sdp_attribute::SDPAttribute;
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use sdp_bandwidth::SDPBandwidth;
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use sdp_connection::SDPConnection;
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use sdp_key::SDPKey;
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glib_wrapper! {
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#[derive(PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct SDPMedia(Boxed<gst_sdp_sys::GstSDPMedia>);
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match fn {
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copy => |ptr| {
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let mut copy = ptr::null_mut();
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gst_sdp_sys::gst_sdp_media_copy(ptr as *const gst_sdp_sys::GstSDPMedia, &mut copy);
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copy
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},
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free => |ptr| {
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gst_sdp_sys::gst_sdp_media_free(ptr);
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},
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}
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}
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impl SDPMedia {
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pub fn new() -> Self {
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assert_initialized_main_thread!();
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unsafe {
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let mut media = ptr::null_mut();
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gst_sdp_sys::gst_sdp_media_new(&mut media);
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from_glib_full(media)
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}
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}
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}
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impl Default for SDPMedia {
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fn default() -> Self {
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Self::new()
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}
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}
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unsafe impl Send for SDPMedia {}
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unsafe impl Sync for SDPMedia {}
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impl ops::Deref for SDPMedia {
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type Target = SDPMediaRef;
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fn deref(&self) -> &SDPMediaRef {
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unsafe { &*(self.to_glib_none().0 as *const SDPMediaRef) }
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}
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}
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impl ops::DerefMut for SDPMedia {
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fn deref_mut(&mut self) -> &mut SDPMediaRef {
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unsafe { &mut *(self.to_glib_none_mut().0 as *mut SDPMediaRef) }
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}
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}
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impl fmt::Debug for SDPMedia {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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<SDPMediaRef as fmt::Debug>::fmt(&*self, f)
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}
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}
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impl fmt::Display for SDPMedia {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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<SDPMediaRef as fmt::Display>::fmt(&*self, f)
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}
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}
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#[repr(C)]
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pub struct SDPMediaRef(gst_sdp_sys::GstSDPMedia);
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impl fmt::Debug for SDPMediaRef {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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use std::cell::RefCell;
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struct DebugIter<I>(RefCell<I>);
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impl<I: Iterator> fmt::Debug for DebugIter<I>
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where
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I::Item: fmt::Debug,
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{
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_list().entries(&mut *self.0.borrow_mut()).finish()
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}
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}
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f.debug_struct("SDPMedia")
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.field("formats", &DebugIter(RefCell::new(self.formats())))
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.field("connections", &DebugIter(RefCell::new(self.connections())))
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.field("bandwidths", &DebugIter(RefCell::new(self.bandwidths())))
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.field("attributes", &DebugIter(RefCell::new(self.attributes())))
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.field("information", &self.get_information())
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.field("key", &self.get_key())
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.field("media", &self.get_media())
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.field("port", &self.get_port())
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.field("num-ports", &self.get_num_ports())
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.field("proto", &self.get_proto())
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.finish()
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}
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}
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impl fmt::Display for SDPMediaRef {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match self.as_text() {
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Ok(text) => f.write_str(text.as_str()),
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Err(_) => Err(fmt::Error),
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}
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}
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}
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unsafe impl Send for SDPMediaRef {}
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unsafe impl Sync for SDPMediaRef {}
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impl SDPMediaRef {
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pub fn add_attribute(&mut self, key: &str, value: Option<&str>) {
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let value = value.to_glib_none();
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unsafe {
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gst_sdp_sys::gst_sdp_media_add_attribute(&mut self.0, key.to_glib_none().0, value.0)
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};
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}
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pub fn add_bandwidth(&mut self, bwtype: &str, bandwidth: u32) {
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unsafe {
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gst_sdp_sys::gst_sdp_media_add_bandwidth(
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&mut self.0,
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bwtype.to_glib_none().0,
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bandwidth,
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)
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};
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}
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pub fn add_connection(
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&mut self,
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nettype: &str,
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addrtype: &str,
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address: &str,
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ttl: u32,
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addr_number: u32,
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) {
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unsafe {
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gst_sdp_sys::gst_sdp_media_add_connection(
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&mut self.0,
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nettype.to_glib_none().0,
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addrtype.to_glib_none().0,
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address.to_glib_none().0,
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ttl,
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addr_number,
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)
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};
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}
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pub fn add_format(&mut self, format: &str) {
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unsafe { gst_sdp_sys::gst_sdp_media_add_format(&mut self.0, format.to_glib_none().0) };
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}
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pub fn as_text(&self) -> Result<String, glib::error::BoolError> {
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unsafe {
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match from_glib_full(gst_sdp_sys::gst_sdp_media_as_text(&self.0)) {
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Some(s) => Ok(s),
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None => Err(glib_bool_error!(
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"Failed to convert the contents of media to a text string"
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)),
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}
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}
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}
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pub fn attributes(&self) -> AttributesIter {
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AttributesIter::new(self)
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}
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pub fn formats(&self) -> FormatsIter {
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FormatsIter::new(self)
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}
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pub fn bandwidths(&self) -> BandwidthsIter {
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BandwidthsIter::new(self)
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}
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pub fn connections(&self) -> ConnectionsIter {
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ConnectionsIter::new(self)
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}
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pub fn attributes_len(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_attributes_len(&self.0) }
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}
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pub fn attributes_to_caps(&self, caps: &mut gst::CapsRef) -> Result<(), ()> {
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let result =
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unsafe { gst_sdp_sys::gst_sdp_media_attributes_to_caps(&self.0, caps.as_mut_ptr()) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn bandwidths_len(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_bandwidths_len(&self.0) }
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}
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pub fn connections_len(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_connections_len(&self.0) }
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}
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pub fn formats_len(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_formats_len(&self.0) }
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}
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pub fn get_attribute(&self, idx: u32) -> Option<&SDPAttribute> {
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if idx >= self.attributes_len() {
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return None;
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}
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_attribute(&self.0, idx);
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if ptr.is_null() {
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None
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} else {
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Some(&*(ptr as *mut SDPAttribute))
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}
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}
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}
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pub fn get_attribute_val(&self, key: &str) -> Option<&str> {
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_attribute_val(&self.0, key.to_glib_none().0);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn get_attribute_val_n(&self, key: &str, nth: u32) -> Option<&str> {
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unsafe {
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let ptr =
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gst_sdp_sys::gst_sdp_media_get_attribute_val_n(&self.0, key.to_glib_none().0, nth);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn get_bandwidth(&self, idx: u32) -> Option<&SDPBandwidth> {
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if idx >= self.bandwidths_len() {
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return None;
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}
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_bandwidth(&self.0, idx);
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if ptr.is_null() {
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None
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} else {
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Some(&*(ptr as *mut SDPBandwidth))
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}
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}
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}
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pub fn get_caps_from_media(&self, pt: i32) -> Option<gst::Caps> {
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unsafe { from_glib_full(gst_sdp_sys::gst_sdp_media_get_caps_from_media(&self.0, pt)) }
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}
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pub fn get_connection(&self, idx: u32) -> Option<&SDPConnection> {
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if idx >= self.connections_len() {
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return None;
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}
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_connection(&self.0, idx);
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if ptr.is_null() {
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None
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} else {
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Some(&*(ptr as *mut SDPConnection))
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}
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}
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}
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pub fn get_format(&self, idx: u32) -> Option<&str> {
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if idx >= self.formats_len() {
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return None;
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}
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_format(&self.0, idx);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn get_information(&self) -> Option<&str> {
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_information(&self.0);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn get_key(&self) -> Option<&SDPKey> {
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_key(&self.0);
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if ptr.is_null() {
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None
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} else {
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Some(&*(ptr as *mut SDPKey))
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}
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}
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}
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pub fn get_media(&self) -> Option<&str> {
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_media(&self.0);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn get_num_ports(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_get_num_ports(&self.0) }
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}
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pub fn get_port(&self) -> u32 {
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unsafe { gst_sdp_sys::gst_sdp_media_get_port(&self.0) }
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}
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pub fn get_proto(&self) -> Option<&str> {
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unsafe {
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let ptr = gst_sdp_sys::gst_sdp_media_get_proto(&self.0);
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if ptr.is_null() {
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None
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} else {
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let result = CStr::from_ptr(ptr).to_str();
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match result {
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Ok(attr) => Some(attr),
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Err(_) => None,
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}
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}
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}
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}
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pub fn insert_attribute(&mut self, idx: Option<u32>, attr: SDPAttribute) -> Result<(), ()> {
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if let Some(idx) = idx {
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if idx >= self.attributes_len() {
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return Err(());
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}
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}
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let idx = idx.map(|idx| idx as i32).unwrap_or(-1);
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let mut attr = mem::ManuallyDrop::new(attr);
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let result =
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unsafe { gst_sdp_sys::gst_sdp_media_insert_attribute(&mut self.0, idx, &mut attr.0) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn insert_bandwidth(&mut self, idx: Option<u32>, bw: SDPBandwidth) -> Result<(), ()> {
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if let Some(idx) = idx {
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if idx >= self.bandwidths_len() {
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return Err(());
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}
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}
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let idx = idx.map(|idx| idx as i32).unwrap_or(-1);
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let mut bw = mem::ManuallyDrop::new(bw);
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let result =
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unsafe { gst_sdp_sys::gst_sdp_media_insert_bandwidth(&mut self.0, idx, &mut bw.0) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn insert_connection(&mut self, idx: Option<u32>, conn: SDPConnection) -> Result<(), ()> {
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if let Some(idx) = idx {
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if idx >= self.connections_len() {
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return Err(());
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}
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}
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let idx = idx.map(|idx| idx as i32).unwrap_or(-1);
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let mut conn = mem::ManuallyDrop::new(conn);
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let result =
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unsafe { gst_sdp_sys::gst_sdp_media_insert_connection(&mut self.0, idx, &mut conn.0) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn insert_format(&mut self, idx: Option<u32>, format: &str) -> Result<(), ()> {
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if let Some(idx) = idx {
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if idx >= self.formats_len() {
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return Err(());
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}
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}
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let idx = idx.map(|idx| idx as i32).unwrap_or(-1);
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let result = unsafe {
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gst_sdp_sys::gst_sdp_media_insert_format(&mut self.0, idx, format.to_glib_none().0)
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};
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn remove_attribute(&mut self, idx: u32) -> Result<(), ()> {
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if idx >= self.attributes_len() {
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return Err(());
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}
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let result = unsafe { gst_sdp_sys::gst_sdp_media_remove_attribute(&mut self.0, idx) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn remove_bandwidth(&mut self, idx: u32) -> Result<(), ()> {
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if idx >= self.bandwidths_len() {
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return Err(());
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}
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let result = unsafe { gst_sdp_sys::gst_sdp_media_remove_bandwidth(&mut self.0, idx) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn remove_connection(&mut self, idx: u32) -> Result<(), ()> {
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if idx >= self.connections_len() {
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return Err(());
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}
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let result = unsafe { gst_sdp_sys::gst_sdp_media_remove_connection(&mut self.0, idx) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn remove_format(&mut self, idx: u32) -> Result<(), ()> {
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if idx >= self.formats_len() {
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return Err(());
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}
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let result = unsafe { gst_sdp_sys::gst_sdp_media_remove_format(&mut self.0, idx) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
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_ => Err(()),
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}
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}
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pub fn replace_attribute(&mut self, idx: u32, attr: SDPAttribute) -> Result<(), ()> {
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if idx >= self.attributes_len() {
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return Err(());
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}
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let mut attr = mem::ManuallyDrop::new(attr);
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let result =
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unsafe { gst_sdp_sys::gst_sdp_media_replace_attribute(&mut self.0, idx, &mut attr.0) };
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match result {
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gst_sdp_sys::GST_SDP_OK => Ok(()),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
|
|
pub fn replace_bandwidth(&mut self, idx: u32, bw: SDPBandwidth) -> Result<(), ()> {
|
|
if idx >= self.bandwidths_len() {
|
|
return Err(());
|
|
}
|
|
|
|
let mut bw = mem::ManuallyDrop::new(bw);
|
|
let result =
|
|
unsafe { gst_sdp_sys::gst_sdp_media_replace_bandwidth(&mut self.0, idx, &mut bw.0) };
|
|
match result {
|
|
gst_sdp_sys::GST_SDP_OK => Ok(()),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
|
|
pub fn replace_connection(&mut self, idx: u32, conn: SDPConnection) -> Result<(), ()> {
|
|
if idx >= self.connections_len() {
|
|
return Err(());
|
|
}
|
|
|
|
let mut conn = mem::ManuallyDrop::new(conn);
|
|
let result =
|
|
unsafe { gst_sdp_sys::gst_sdp_media_replace_connection(&mut self.0, idx, &mut conn.0) };
|
|
match result {
|
|
gst_sdp_sys::GST_SDP_OK => Ok(()),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
|
|
pub fn replace_format(&mut self, idx: u32, format: &str) -> Result<(), ()> {
|
|
if idx >= self.formats_len() {
|
|
return Err(());
|
|
}
|
|
|
|
let result = unsafe {
|
|
gst_sdp_sys::gst_sdp_media_replace_format(&mut self.0, idx, format.to_glib_none().0)
|
|
};
|
|
match result {
|
|
gst_sdp_sys::GST_SDP_OK => Ok(()),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
|
|
pub fn set_information(&mut self, information: &str) {
|
|
unsafe {
|
|
gst_sdp_sys::gst_sdp_media_set_information(&mut self.0, information.to_glib_none().0)
|
|
};
|
|
}
|
|
|
|
pub fn set_key(&mut self, type_: &str, data: &str) {
|
|
unsafe {
|
|
gst_sdp_sys::gst_sdp_media_set_key(
|
|
&mut self.0,
|
|
type_.to_glib_none().0,
|
|
data.to_glib_none().0,
|
|
)
|
|
};
|
|
}
|
|
|
|
pub fn set_media(&mut self, med: &str) {
|
|
unsafe { gst_sdp_sys::gst_sdp_media_set_media(&mut self.0, med.to_glib_none().0) };
|
|
}
|
|
|
|
pub fn set_port_info(&mut self, port: u32, num_ports: u32) {
|
|
unsafe { gst_sdp_sys::gst_sdp_media_set_port_info(&mut self.0, port, num_ports) };
|
|
}
|
|
|
|
pub fn set_proto(&mut self, proto: &str) {
|
|
unsafe { gst_sdp_sys::gst_sdp_media_set_proto(&mut self.0, proto.to_glib_none().0) };
|
|
}
|
|
|
|
pub fn set_media_from_caps(caps: &gst::Caps, media: &mut SDPMedia) -> Result<(), ()> {
|
|
assert_initialized_main_thread!();
|
|
let result = unsafe {
|
|
gst_sdp_sys::gst_sdp_media_set_media_from_caps(
|
|
caps.to_glib_none().0,
|
|
media.to_glib_none_mut().0,
|
|
)
|
|
};
|
|
match result {
|
|
gst_sdp_sys::GST_SDP_OK => Ok(()),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Borrow<SDPMediaRef> for SDPMedia {
|
|
fn borrow(&self) -> &SDPMediaRef {
|
|
&*self
|
|
}
|
|
}
|
|
|
|
impl BorrowMut<SDPMediaRef> for SDPMedia {
|
|
fn borrow_mut(&mut self) -> &mut SDPMediaRef {
|
|
&mut *self
|
|
}
|
|
}
|
|
|
|
impl ToOwned for SDPMediaRef {
|
|
type Owned = SDPMedia;
|
|
|
|
fn to_owned(&self) -> SDPMedia {
|
|
unsafe {
|
|
let mut ptr = ptr::null_mut();
|
|
gst_sdp_sys::gst_sdp_media_copy(&self.0, &mut ptr);
|
|
from_glib_full(ptr)
|
|
}
|
|
}
|
|
}
|
|
|
|
macro_rules! define_iter(
|
|
($name:ident, $typ:ty, $get_item:expr, $get_len:expr) => {
|
|
#[derive(Debug)]
|
|
pub struct $name<'a> {
|
|
media: &'a SDPMediaRef,
|
|
idx: u32,
|
|
len: u32,
|
|
}
|
|
|
|
impl<'a> $name<'a> {
|
|
fn new(media: &'a SDPMediaRef) -> $name<'a> {
|
|
skip_assert_initialized!();
|
|
let len = $get_len(media);
|
|
|
|
$name {
|
|
media,
|
|
idx: 0,
|
|
len,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'a> Iterator for $name<'a> {
|
|
type Item = $typ;
|
|
|
|
fn next(&mut self) -> Option<Self::Item> {
|
|
if self.idx >= self.len {
|
|
return None;
|
|
}
|
|
|
|
let item = $get_item(self.media, self.idx)?;
|
|
self.idx += 1;
|
|
Some(item)
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
if self.idx == self.len {
|
|
return (0, Some(0))
|
|
}
|
|
|
|
let remaining = (self.len - self.idx) as usize;
|
|
|
|
(remaining, Some(remaining))
|
|
}
|
|
}
|
|
|
|
impl<'a> DoubleEndedIterator for $name<'a> {
|
|
fn next_back(&mut self) -> Option<Self::Item> {
|
|
if self.idx == self.len {
|
|
return None;
|
|
}
|
|
|
|
self.len -= 1;
|
|
|
|
$get_item(self.media, self.len)
|
|
}
|
|
}
|
|
|
|
impl<'a> ExactSizeIterator for $name<'a> {}
|
|
}
|
|
);
|
|
|
|
define_iter!(
|
|
BandwidthsIter,
|
|
&'a SDPBandwidth,
|
|
|media: &'a SDPMediaRef, idx| media.get_bandwidth(idx),
|
|
|media: &SDPMediaRef| media.bandwidths_len()
|
|
);
|
|
define_iter!(
|
|
FormatsIter,
|
|
&'a str,
|
|
|media: &'a SDPMediaRef, idx| media.get_format(idx),
|
|
|media: &SDPMediaRef| media.formats_len()
|
|
);
|
|
define_iter!(
|
|
ConnectionsIter,
|
|
&'a SDPConnection,
|
|
|media: &'a SDPMediaRef, idx| media.get_connection(idx),
|
|
|media: &SDPMediaRef| media.connections_len()
|
|
);
|
|
define_iter!(
|
|
AttributesIter,
|
|
&'a SDPAttribute,
|
|
|media: &'a SDPMediaRef, idx| media.get_attribute(idx),
|
|
|media: &SDPMediaRef| media.attributes_len()
|
|
);
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
fn init() {
|
|
gst::init().unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn debug_impl() {
|
|
init();
|
|
|
|
let sdp = SDPMedia::new();
|
|
assert!(!format!("{:?}", sdp).is_empty());
|
|
}
|
|
}
|