gstreamer-rs/gstreamer-rtp/src/subclass/rtp_header_extension.rs

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// Take a look at the license at the top of the repository in the LICENSE file.
use glib::{prelude::*, subclass::prelude::*, translate::*};
use super::prelude::*;
pub trait RTPHeaderExtensionImpl: RTPHeaderExtensionImplExt + ElementImpl {
const URI: &'static str;
fn supported_flags(&self) -> crate::RTPHeaderExtensionFlags {
self.parent_supported_flags()
}
fn max_size(&self, input: &gst::BufferRef) -> usize {
self.parent_max_size(input)
}
fn write(
&self,
input: &gst::BufferRef,
write_flags: crate::RTPHeaderExtensionFlags,
output: &gst::BufferRef,
output_data: &mut [u8],
) -> Result<usize, gst::LoggableError> {
self.parent_write(input, write_flags, output, output_data)
}
fn read(
&self,
read_flags: crate::RTPHeaderExtensionFlags,
input_data: &[u8],
output: &mut gst::BufferRef,
) -> Result<(), gst::LoggableError> {
self.parent_read(read_flags, input_data, output)
}
fn set_non_rtp_sink_caps(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
self.parent_set_non_rtp_sink_caps(caps)
}
fn update_non_rtp_src_caps(&self, caps: &mut gst::CapsRef) -> Result<(), gst::LoggableError> {
self.parent_update_non_rtp_src_caps(caps)
}
fn set_attributes(
&self,
direction: crate::RTPHeaderExtensionDirection,
attributes: &str,
) -> Result<(), gst::LoggableError> {
self.parent_set_attributes(direction, attributes)
}
fn set_caps_from_attributes(&self, caps: &mut gst::CapsRef) -> Result<(), gst::LoggableError> {
self.parent_set_caps_from_attributes(caps)
}
}
mod sealed {
pub trait Sealed {}
impl<T: super::RTPHeaderExtensionImplExt> Sealed for T {}
}
pub trait RTPHeaderExtensionImplExt: sealed::Sealed + ObjectSubclass {
fn parent_supported_flags(&self) -> crate::RTPHeaderExtensionFlags {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
let f = (*parent_class)
.get_supported_flags
.expect("no parent \"get_supported_flags\" implementation");
from_glib(f(self
.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0))
}
}
fn parent_max_size(&self, input: &gst::BufferRef) -> usize {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
let f = (*parent_class)
.get_max_size
.expect("no parent \"get_max_size\" implementation");
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
input.as_ptr(),
)
}
}
fn parent_write(
&self,
input: &gst::BufferRef,
write_flags: crate::RTPHeaderExtensionFlags,
output: &gst::BufferRef,
output_data: &mut [u8],
) -> Result<usize, gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
let f = (*parent_class)
.write
.expect("no parent \"write\" implementation");
let res = f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
input.as_ptr(),
write_flags.into_glib(),
mut_override(output.as_ptr()),
output_data.as_mut_ptr(),
output_data.len(),
);
if res < 0 {
Err(gst::loggable_error!(
gst::CAT_RUST,
"Failed to write extension data"
))
} else {
Ok(res as usize)
}
}
}
fn parent_read(
&self,
read_flags: crate::RTPHeaderExtensionFlags,
input_data: &[u8],
output: &mut gst::BufferRef,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
let f = (*parent_class)
.read
.expect("no parent \"read\" implementation");
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
read_flags.into_glib(),
input_data.as_ptr(),
input_data.len(),
output.as_mut_ptr(),
),
gst::CAT_RUST,
"Failed to read extension data",
)
}
}
fn parent_set_non_rtp_sink_caps(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
if let Some(f) = (*parent_class).set_non_rtp_sink_caps {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
caps.as_mut_ptr(),
),
gst::CAT_RUST,
"Failed to set non-RTP sink caps",
)
} else {
Ok(())
}
}
}
fn parent_update_non_rtp_src_caps(
&self,
caps: &mut gst::CapsRef,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
if let Some(f) = (*parent_class).update_non_rtp_src_caps {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
caps.as_mut_ptr(),
),
gst::CAT_RUST,
"Failed to update non-RTP source caps",
)
} else {
Ok(())
}
}
}
fn parent_set_attributes(
&self,
direction: crate::RTPHeaderExtensionDirection,
attributes: &str,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
if let Some(f) = (*parent_class).set_attributes {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
direction.into_glib(),
attributes.to_glib_none().0,
),
gst::CAT_RUST,
"Failed to set attributes",
)
} else {
Ok(())
}
}
}
fn parent_set_caps_from_attributes(
&self,
caps: &mut gst::CapsRef,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstRTPHeaderExtensionClass;
let f = (*parent_class)
.set_caps_from_attributes
.expect("no parent \"set_caps_from_attributes\" implementation");
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<crate::RTPHeaderExtension>()
.to_glib_none()
.0,
caps.as_mut_ptr(),
),
gst::CAT_RUST,
"Failed to set caps from attributes",
)
}
}
}
impl<T: RTPHeaderExtensionImpl> RTPHeaderExtensionImplExt for T {}
unsafe impl<T: RTPHeaderExtensionImpl> IsSubclassable<T> for crate::RTPHeaderExtension {
fn class_init(klass: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(klass);
let klass = klass.as_mut();
klass.get_supported_flags = Some(get_supported_flags::<T>);
klass.get_max_size = Some(get_max_size::<T>);
klass.write = Some(write::<T>);
klass.read = Some(read::<T>);
klass.set_non_rtp_sink_caps = Some(set_non_rtp_sink_caps::<T>);
klass.update_non_rtp_src_caps = Some(update_non_rtp_src_caps::<T>);
klass.set_attributes = Some(set_attributes::<T>);
klass.set_caps_from_attributes = Some(set_caps_from_attributes::<T>);
unsafe {
ffi::gst_rtp_header_extension_class_set_uri(&mut *klass, T::URI.to_glib_none().0);
}
}
}
unsafe extern "C" fn get_supported_flags<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
) -> ffi::GstRTPHeaderExtensionFlags {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, crate::RTPHeaderExtensionFlags::empty(), {
imp.supported_flags()
})
.into_glib()
}
unsafe extern "C" fn get_max_size<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
input: *const gst::ffi::GstBuffer,
) -> usize {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, 0, { imp.max_size(gst::BufferRef::from_ptr(input)) })
}
unsafe extern "C" fn write<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
input: *const gst::ffi::GstBuffer,
write_flags: ffi::GstRTPHeaderExtensionFlags,
output: *mut gst::ffi::GstBuffer,
output_data: *mut u8,
output_data_len: usize,
) -> isize {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, -1, {
match imp.write(
gst::BufferRef::from_ptr(input),
from_glib(write_flags),
gst::BufferRef::from_ptr(output),
if output_data_len == 0 {
&mut []
} else {
std::slice::from_raw_parts_mut(output_data, output_data_len)
},
) {
Ok(len) => len as isize,
Err(err) => {
err.log_with_imp(imp);
-1
}
}
})
}
unsafe extern "C" fn read<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
read_flags: ffi::GstRTPHeaderExtensionFlags,
input_data: *const u8,
input_data_len: usize,
output: *mut gst::ffi::GstBuffer,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.read(
from_glib(read_flags),
if input_data_len == 0 {
&[]
} else {
std::slice::from_raw_parts(input_data, input_data_len)
},
gst::BufferRef::from_mut_ptr(output),
) {
Ok(_) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn set_non_rtp_sink_caps<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
caps: *mut gst::ffi::GstCaps,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.set_non_rtp_sink_caps(&from_glib_borrow(caps)) {
Ok(_) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn update_non_rtp_src_caps<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
caps: *mut gst::ffi::GstCaps,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.update_non_rtp_src_caps(gst::CapsRef::from_mut_ptr(caps)) {
Ok(_) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn set_attributes<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
direction: ffi::GstRTPHeaderExtensionDirection,
attributes: *const libc::c_char,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.set_attributes(
from_glib(direction),
&glib::GString::from_glib_borrow(attributes),
) {
Ok(_) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn set_caps_from_attributes<T: RTPHeaderExtensionImpl>(
ptr: *mut ffi::GstRTPHeaderExtension,
caps: *mut gst::ffi::GstCaps,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.set_caps_from_attributes(gst::CapsRef::from_mut_ptr(caps)) {
Ok(_) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}