gstreamer-rs/gstreamer/src/sample.rs

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// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
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use std::fmt;
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use std::ptr;
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use gst_sys;
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use glib;
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use glib::translate::{from_glib_full, from_glib_none, mut_override, ToGlibPtr};
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use miniobject::*;
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use Buffer;
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use BufferList;
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use Caps;
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use FormattedSegment;
use FormattedValue;
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use Segment;
use Structure;
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use StructureRef;
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gst_define_mini_object_wrapper!(Sample, SampleRef, gst_sys::GstSample, [Debug,], || {
gst_sys::gst_sample_get_type()
});
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impl Sample {
pub fn new<F: FormattedValue>(
buffer: Option<&Buffer>,
caps: Option<&Caps>,
segment: Option<&FormattedSegment<F>>,
info: Option<Structure>,
) -> Self {
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assert_initialized_main_thread!();
unsafe {
let info = info.map(|i| i.into_ptr()).unwrap_or(ptr::null_mut());
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from_glib_full(gst_sys::gst_sample_new(
buffer.to_glib_none().0,
caps.to_glib_none().0,
segment.to_glib_none().0,
mut_override(info),
))
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}
}
pub fn with_buffer_list<F: FormattedValue>(
buffer_list: Option<&BufferList>,
caps: Option<&Caps>,
segment: Option<&FormattedSegment<F>>,
info: Option<Structure>,
) -> Self {
assert_initialized_main_thread!();
let sample = Self::new(None, caps, segment, info);
unsafe {
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gst_sys::gst_sample_set_buffer_list(
sample.to_glib_none().0,
buffer_list.to_glib_none().0,
);
}
sample
}
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}
impl SampleRef {
pub fn get_buffer(&self) -> Option<Buffer> {
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unsafe { from_glib_none(gst_sys::gst_sample_get_buffer(self.as_mut_ptr())) }
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}
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pub fn get_buffer_list(&self) -> Option<BufferList> {
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unsafe { from_glib_none(gst_sys::gst_sample_get_buffer_list(self.as_mut_ptr())) }
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}
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pub fn get_caps(&self) -> Option<Caps> {
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unsafe { from_glib_none(gst_sys::gst_sample_get_caps(self.as_mut_ptr())) }
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}
pub fn get_segment(&self) -> Option<Segment> {
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unsafe { from_glib_none(gst_sys::gst_sample_get_segment(self.as_mut_ptr())) }
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}
pub fn get_info(&self) -> Option<&StructureRef> {
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unsafe {
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let ptr = gst_sys::gst_sample_get_info(self.as_mut_ptr());
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if ptr.is_null() {
None
} else {
Some(StructureRef::from_glib_borrow(ptr))
}
}
}
}
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impl fmt::Debug for SampleRef {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Sample")
.field("buffer", &self.get_buffer())
.field("caps", &self.get_caps())
.field("segment", &self.get_segment())
.field("info", &self.get_info())
.finish()
}
}
#[cfg(test)]
mod tests {
#[test]
fn test_sample_new_with_info() {
use GenericFormattedValue;
use Sample;
use Structure;
::init().unwrap();
let info = Structure::builder("sample.info")
.field("f3", &123i32)
.build();
let sample = Sample::new::<GenericFormattedValue>(None, None, None, Some(info));
assert!(sample.get_info().is_some());
}
}