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gstreamer/pad: Add get_range_fill() and pull_range_fill() functions

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These allow providing an already allocated, writable buffer.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/issues/242
This commit is contained in:
Sebastian Dröge 2020-03-28 19:57:49 +02:00
parent 0ca6be25c5
commit 7c2f3bafa0
1 changed files with 72 additions and 0 deletions
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72
gstreamer/src/pad.rs
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@ -128,7 +128,19 @@ pub trait PadExtManual: 'static {
fn push_list(&self, list: BufferList) -> Result<FlowSuccess, FlowError>;
fn pull_range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError>;
fn pull_range_fill(
&self,
offset: u64,
buffer: &mut ::BufferRef,
size: u32,
) -> Result<(), FlowError>;
fn get_range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError>;
fn get_range_fill(
&self,
offset: u64,
buffer: &mut ::BufferRef,
size: u32,
) -> Result<(), FlowError>;
fn peer_query(&self, query: &mut QueryRef) -> bool;
fn query(&self, query: &mut QueryRef) -> bool;
@ -351,6 +363,36 @@ impl<O: IsA<Pad>> PadExtManual for O {
}
}
fn get_range_fill(
&self,
offset: u64,
buffer: &mut ::BufferRef,
size: u32,
) -> Result<(), FlowError> {
assert!(buffer.get_size() >= size as usize);
unsafe {
let mut buffer_ref = buffer.as_mut_ptr();
let ret: FlowReturn = from_glib(gst_sys::gst_pad_get_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer_ref,
));
match ret.into_result_value(|| ()) {
Ok(_) => {
if buffer.as_mut_ptr() != buffer_ref {
gst_sys::gst_mini_object_unref(buffer_ref as *mut _);
Err(::FlowError::Error)
} else {
Ok(())
}
}
Err(err) => Err(err),
}
}
}
fn pull_range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError> {
unsafe {
let mut buffer = ptr::null_mut();
@ -364,6 +406,36 @@ impl<O: IsA<Pad>> PadExtManual for O {
}
}
fn pull_range_fill(
&self,
offset: u64,
buffer: &mut ::BufferRef,
size: u32,
) -> Result<(), FlowError> {
assert!(buffer.get_size() >= size as usize);
unsafe {
let mut buffer_ref = buffer.as_mut_ptr();
let ret: FlowReturn = from_glib(gst_sys::gst_pad_pull_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer_ref,
));
match ret.into_result_value(|| ()) {
Ok(_) => {
if buffer.as_mut_ptr() != buffer_ref {
gst_sys::gst_mini_object_unref(buffer_ref as *mut _);
Err(::FlowError::Error)
} else {
Ok(())
}
}
Err(err) => Err(err),
}
}
}
fn query(&self, query: &mut QueryRef) -> bool {
unsafe {
from_glib(gst_sys::gst_pad_query(