1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145

// Copyright (C) 2019 Guillaume Desmottes <guillaume.desmottes@collabora.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;
use gst::FormattedValue;
use gst_base_sys;
use std::convert::TryFrom;
use std::mem;
use BaseParse;
use BaseParseFrame;

pub trait BaseParseExtManual: 'static {
    fn get_sink_pad(&self) -> gst::Pad;
    fn get_src_pad(&self) -> gst::Pad;

    fn set_duration<V: Into<gst::GenericFormattedValue>>(&self, duration: V, interval: u32);
    fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32);

    fn convert_default<V: Into<gst::GenericFormattedValue>, U: gst::SpecificFormattedValue>(
        &self,
        src_val: V,
    ) -> Option<U>;
    fn convert_default_generic<V: Into<gst::GenericFormattedValue>>(
        &self,
        src_val: V,
        dest_format: gst::Format,
    ) -> Option<gst::GenericFormattedValue>;

    fn finish_frame(
        &self,
        frame: BaseParseFrame,
        size: u32,
    ) -> Result<gst::FlowSuccess, gst::FlowError>;
}

impl<O: IsA<BaseParse>> BaseParseExtManual for O {
    fn get_sink_pad(&self) -> gst::Pad {
        unsafe {
            let elt: &gst_base_sys::GstBaseParse = &*(self.as_ptr() as *const _);
            from_glib_none(elt.sinkpad)
        }
    }

    fn get_src_pad(&self) -> gst::Pad {
        unsafe {
            let elt: &gst_base_sys::GstBaseParse = &*(self.as_ptr() as *const _);
            from_glib_none(elt.srcpad)
        }
    }

    fn set_duration<V: Into<gst::GenericFormattedValue>>(&self, duration: V, interval: u32) {
        let duration = duration.into();
        unsafe {
            gst_base_sys::gst_base_parse_set_duration(
                self.as_ref().to_glib_none().0,
                duration.get_format().to_glib(),
                duration.get_value(),
                interval as i32,
            );
        }
    }

    fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32) {
        let (fps_num, fps_den) = fps.into();
        unsafe {
            gst_base_sys::gst_base_parse_set_frame_rate(
                self.as_ref().to_glib_none().0,
                fps_num as u32,
                fps_den as u32,
                lead_in,
                lead_out,
            );
        }
    }

    fn convert_default<V: Into<gst::GenericFormattedValue>, U: gst::SpecificFormattedValue>(
        &self,
        src_val: V,
    ) -> Option<U> {
        let src_val = src_val.into();
        unsafe {
            let mut dest_val = mem::MaybeUninit::uninit();
            let ret = from_glib(gst_base_sys::gst_base_parse_convert_default(
                self.as_ref().to_glib_none().0,
                src_val.get_format().to_glib(),
                src_val.to_raw_value(),
                U::get_default_format().to_glib(),
                dest_val.as_mut_ptr(),
            ));
            if ret {
                Some(U::from_raw(U::get_default_format(), dest_val.assume_init()))
            } else {
                None
            }
        }
    }

    fn convert_default_generic<V: Into<gst::GenericFormattedValue>>(
        &self,
        src_val: V,
        dest_format: gst::Format,
    ) -> Option<gst::GenericFormattedValue> {
        let src_val = src_val.into();
        unsafe {
            let mut dest_val = mem::MaybeUninit::uninit();
            let ret = from_glib(gst_base_sys::gst_base_parse_convert_default(
                self.as_ref().to_glib_none().0,
                src_val.get_format().to_glib(),
                src_val.to_raw_value(),
                dest_format.to_glib(),
                dest_val.as_mut_ptr(),
            ));
            if ret {
                Some(gst::GenericFormattedValue::new(
                    dest_format,
                    dest_val.assume_init(),
                ))
            } else {
                None
            }
        }
    }

    fn finish_frame(
        &self,
        frame: BaseParseFrame,
        size: u32,
    ) -> Result<gst::FlowSuccess, gst::FlowError> {
        unsafe {
            gst::FlowReturn::from_glib(gst_base_sys::gst_base_parse_finish_frame(
                self.as_ref().to_glib_none().0,
                frame.to_glib_none().0,
                i32::try_from(size).expect("size higher than i32::MAX"),
            ))
            .into_result()
        }
    }
}