gstreamer-rs/gstreamer-base/src/functions.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.
use glib::object::IsA;
use glib::translate::*;
use gst;
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use gst_base_sys;
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use std::mem;
pub fn type_find_helper_for_data<P: IsA<gst::Object>, R: AsRef<[u8]>>(
obj: Option<&P>,
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data: R,
) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
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assert_initialized_main_thread!();
unsafe {
let mut prob = mem::MaybeUninit::uninit();
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let data = data.as_ref();
let (ptr, len) = (data.as_ptr(), data.len());
let ret = gst_base_sys::gst_type_find_helper_for_data(
obj.map(|p| p.as_ref()).to_glib_none().0,
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mut_override(ptr),
len,
prob.as_mut_ptr(),
);
if ret.is_null() {
Err(glib_bool_error!("No type could be found"))
} else {
Ok((from_glib_full(ret), from_glib(prob.assume_init())))
}
}
}
#[cfg(any(feature = "v1_16", feature = "dox"))]
pub fn type_find_helper_for_data_with_extension<P: IsA<gst::Object>, R: AsRef<[u8]>>(
obj: Option<&P>,
data: R,
extension: Option<&str>,
) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
assert_initialized_main_thread!();
unsafe {
let mut prob = mem::MaybeUninit::uninit();
let data = data.as_ref();
let (ptr, len) = (data.as_ptr(), data.len());
let ret = gst_base_sys::gst_type_find_helper_for_data_with_extension(
obj.map(|p| p.as_ref()).to_glib_none().0,
mut_override(ptr),
len,
extension.to_glib_none().0,
prob.as_mut_ptr(),
);
if ret.is_null() {
Err(glib_bool_error!("No type could be found"))
} else {
Ok((from_glib_full(ret), from_glib(prob.assume_init())))
}
}
}
pub fn type_find_helper_for_buffer<P: IsA<gst::Object>>(
obj: Option<&P>,
buf: &gst::Buffer,
) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
assert_initialized_main_thread!();
unsafe {
let mut prob = mem::MaybeUninit::uninit();
let ret = gst_base_sys::gst_type_find_helper_for_buffer(
obj.map(|p| p.as_ref()).to_glib_none().0,
buf.to_glib_none().0,
prob.as_mut_ptr(),
);
if ret.is_null() {
Err(glib_bool_error!("No type could be found"))
} else {
Ok((from_glib_full(ret), from_glib(prob.assume_init())))
}
}
}
#[cfg(any(feature = "v1_16", feature = "dox"))]
pub fn type_find_helper_for_buffer_with_extension<P: IsA<gst::Object>>(
obj: Option<&P>,
buf: &gst::Buffer,
extension: Option<&str>,
) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
assert_initialized_main_thread!();
unsafe {
let mut prob = mem::MaybeUninit::uninit();
let ret = gst_base_sys::gst_type_find_helper_for_buffer_with_extension(
obj.map(|p| p.as_ref()).to_glib_none().0,
buf.to_glib_none().0,
extension.to_glib_none().0,
prob.as_mut_ptr(),
);
if ret.is_null() {
Err(glib_bool_error!("No type could be found"))
} else {
Ok((from_glib_full(ret), from_glib(prob.assume_init())))
}
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}
}