gstreamer-rs/gstreamer-pbutils/src/functions.rs

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// Copyright (C) 2018 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;
use glib::translate::*;
use gst;
use gst::MiniObject;
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use gst_pbutils_sys;
use std::ptr;
pub unsafe trait CodecTag<'a>: gst::Tag<'a, TagType = &'a str> {}
unsafe impl<'a> CodecTag<'a> for gst::tags::ContainerFormat {}
unsafe impl<'a> CodecTag<'a> for gst::tags::AudioCodec {}
unsafe impl<'a> CodecTag<'a> for gst::tags::VideoCodec {}
unsafe impl<'a> CodecTag<'a> for gst::tags::SubtitleCodec {}
unsafe impl<'a> CodecTag<'a> for gst::tags::Codec {}
pub fn pb_utils_add_codec_description_to_tag_list_for_tag<'a, T: CodecTag<'a>>(
taglist: &mut gst::TagListRef,
caps: &gst::CapsRef,
) -> Result<(), glib::BoolError> {
assert_initialized_main_thread!();
let codec_tag = T::tag_name();
unsafe {
glib_result_from_gboolean!(
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gst_pbutils_sys::gst_pb_utils_add_codec_description_to_tag_list(
taglist.as_mut_ptr(),
codec_tag.to_glib_none().0,
caps.as_ptr(),
),
"Failed to find codec description",
)
}
}
pub fn pb_utils_add_codec_description_to_tag_list(
taglist: &mut gst::TagListRef,
caps: &gst::CapsRef,
) -> Result<(), glib::BoolError> {
assert_initialized_main_thread!();
unsafe {
glib_result_from_gboolean!(
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gst_pbutils_sys::gst_pb_utils_add_codec_description_to_tag_list(
taglist.as_mut_ptr(),
ptr::null_mut(),
caps.as_ptr(),
),
"Failed to find codec description",
)
}
}
pub fn pb_utils_get_encoder_description(caps: &gst::CapsRef) -> Option<String> {
assert_initialized_main_thread!();
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unsafe {
from_glib_full(gst_pbutils_sys::gst_pb_utils_get_encoder_description(
caps.as_ptr(),
))
}
}
pub fn pb_utils_get_decoder_description(caps: &gst::CapsRef) -> Option<String> {
assert_initialized_main_thread!();
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unsafe {
from_glib_full(gst_pbutils_sys::gst_pb_utils_get_decoder_description(
caps.as_ptr(),
))
}
}
pub fn pb_utils_get_codec_description(caps: &gst::CapsRef) -> Option<String> {
assert_initialized_main_thread!();
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unsafe {
from_glib_full(gst_pbutils_sys::gst_pb_utils_get_codec_description(
caps.as_ptr(),
))
}
}