forked from mirrors/gstreamer-rs
143 lines
4.4 KiB
Rust
143 lines
4.4 KiB
Rust
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// Copyright (C) 2019 Guillaume Desmottes <guillaume.desmottes@collabora.com>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use glib::object::IsA;
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use glib::translate::*;
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use gst;
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use gst::FormattedValue;
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use gst_base_sys;
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use std::convert::TryFrom;
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use std::mem;
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use BaseParse;
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use BaseParseFrame;
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pub trait BaseParseExtManual: 'static {
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fn get_sink_pad(&self) -> gst::Pad;
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fn get_src_pad(&self) -> gst::Pad;
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fn set_duration<V: Into<gst::GenericFormattedValue>>(&self, duration: V, interval: u32);
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fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32);
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fn convert_default<V: Into<gst::GenericFormattedValue>, U: gst::SpecificFormattedValue>(
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&self,
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src_val: V,
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) -> Option<U>;
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fn convert_default_generic<V: Into<gst::GenericFormattedValue>>(
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&self,
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src_val: V,
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dest_format: gst::Format,
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) -> Option<gst::GenericFormattedValue>;
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fn finish_frame(
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&self,
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frame: BaseParseFrame,
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size: u32,
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) -> Result<gst::FlowSuccess, gst::FlowError>;
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}
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impl<O: IsA<BaseParse>> BaseParseExtManual for O {
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fn get_sink_pad(&self) -> gst::Pad {
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unsafe {
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let elt: &gst_base_sys::GstBaseParse = &*(self.as_ptr() as *const _);
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from_glib_none(elt.sinkpad)
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}
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}
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fn get_src_pad(&self) -> gst::Pad {
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unsafe {
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let elt: &gst_base_sys::GstBaseParse = &*(self.as_ptr() as *const _);
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from_glib_none(elt.srcpad)
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}
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}
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fn set_duration<V: Into<gst::GenericFormattedValue>>(&self, duration: V, interval: u32) {
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let duration = duration.into();
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unsafe {
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gst_base_sys::gst_base_parse_set_duration(
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self.as_ref().to_glib_none().0,
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duration.get_format().to_glib(),
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duration.get_value(),
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interval as i32,
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);
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}
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}
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fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32) {
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let (fps_num, fps_den) = fps.into();
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unsafe {
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gst_base_sys::gst_base_parse_set_frame_rate(
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self.as_ref().to_glib_none().0,
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fps_num as u32,
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fps_den as u32,
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lead_in,
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lead_out,
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);
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}
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}
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fn convert_default<V: Into<gst::GenericFormattedValue>, U: gst::SpecificFormattedValue>(
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&self,
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src_val: V,
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) -> Option<U> {
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let src_val = src_val.into();
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unsafe {
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let mut dest_val = mem::uninitialized();
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let ret = from_glib(gst_base_sys::gst_base_parse_convert_default(
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self.as_ref().to_glib_none().0,
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src_val.get_format().to_glib(),
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src_val.to_raw_value(),
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U::get_default_format().to_glib(),
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&mut dest_val,
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));
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if ret {
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Some(U::from_raw(U::get_default_format(), dest_val))
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} else {
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None
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}
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}
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}
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fn convert_default_generic<V: Into<gst::GenericFormattedValue>>(
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&self,
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src_val: V,
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dest_format: gst::Format,
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) -> Option<gst::GenericFormattedValue> {
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let src_val = src_val.into();
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unsafe {
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let mut dest_val = mem::uninitialized();
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let ret = from_glib(gst_base_sys::gst_base_parse_convert_default(
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self.as_ref().to_glib_none().0,
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src_val.get_format().to_glib(),
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src_val.to_raw_value(),
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dest_format.to_glib(),
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&mut dest_val,
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));
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if ret {
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Some(gst::GenericFormattedValue::new(dest_format, dest_val))
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} else {
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None
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}
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}
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}
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fn finish_frame(
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&self,
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frame: BaseParseFrame,
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size: u32,
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) -> Result<gst::FlowSuccess, gst::FlowError> {
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unsafe {
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gst::FlowReturn::from_glib(gst_base_sys::gst_base_parse_finish_frame(
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self.as_ref().to_glib_none().0,
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frame.to_glib_none().0,
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i32::try_from(size).expect("size higher than i32::MAX"),
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))
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.into_result()
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}
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}
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}
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