openh264-sys 1.0.3

Bindings to OpenH264
Documentation 
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

use super::*;
use std::os::raw::{c_int, c_void};
use std::ptr::null_mut;
use std::slice::from_raw_parts;

#[test]
fn encode() {
    let mut encoder = null_mut();
    let width = 32;
    let height = 32;
    unsafe {
        assert_eq!(WelsCreateSVCEncoder(&mut encoder), 0);
        assert!(!encoder.is_null());

        let mut param = SEncParamExt::default();
        assert_eq!(
            (**encoder).GetDefaultParams.unwrap()(encoder, &mut param),
            0
        );

        let fps = 60.0;
        let bitrate = 1000_000;
        param.iUsageType = CAMERA_VIDEO_REAL_TIME;
        param.fMaxFrameRate = fps;
        param.iMaxBitrate = UNSPECIFIED_BIT_RATE as i32;
        param.iSpatialLayerNum = 1;
        param.sSpatialLayers[0].uiProfileIdc = PRO_BASELINE;
        param.sSpatialLayers[0].iVideoWidth = width as i32;
        param.sSpatialLayers[0].iVideoHeight = height as i32;
        param.sSpatialLayers[0].fFrameRate = fps;
        param.sSpatialLayers[0].iSpatialBitrate = bitrate;
        param.sSpatialLayers[0].iMaxSpatialBitrate = UNSPECIFIED_BIT_RATE as i32;
        param.sSpatialLayers[0].sSliceArgument.uiSliceMode = SM_FIXEDSLCNUM_SLICE;
        param.sSpatialLayers[0].sSliceArgument.uiSliceNum = 4;
        param.iPicWidth = width as i32;
        param.iPicHeight = height as i32;
        param.iTargetBitrate = bitrate;

        assert_eq!((**encoder).InitializeExt.unwrap()(encoder, &mut param), 0);

        let mut video_format = videoFormatI420 as c_int;
        assert_eq!(
            (**encoder).SetOption.unwrap()(
                encoder,
                ENCODER_OPTION_DATAFORMAT,
                &mut video_format as *mut c_int as *mut c_void,
            ),
            0
        );

        let mut rc_frame_skip = 0 as c_int;
        assert_eq!(
            (**encoder).SetOption.unwrap()(
                encoder,
                ENCODER_OPTION_RC_FRAME_SKIP,
                &mut rc_frame_skip as *mut c_int as *mut c_void,
            ),
            0
        );

        let mut out = Vec::new();
        let mut y_input = Vec::new();
        y_input.resize(width * height, 0);
        let mut u_input = Vec::new();
        u_input.resize((width / 2) * (height / 2), 0);
        let mut v_input = Vec::new();
        v_input.resize((width / 2) * (height / 2), 0);

        let mut info = SFrameBSInfo::default();
        let mut pic = SSourcePicture::default();
        pic.iPicWidth = width as i32;
        pic.iPicHeight = height as i32;
        pic.iColorFormat = videoFormatI420 as i32;
        pic.iStride[0] = pic.iPicWidth;
        pic.iStride[1] = pic.iPicWidth / 2;
        pic.iStride[2] = pic.iPicWidth / 2;
        pic.pData[0] = y_input.as_mut_ptr();
        pic.pData[1] = u_input.as_mut_ptr();
        pic.pData[2] = v_input.as_mut_ptr();

        if true {
            assert_eq!((**encoder).ForceIntraFrame.unwrap()(encoder, true), 0);
        }

        assert_eq!(
            (**encoder).EncodeFrame.unwrap()(encoder, &mut pic, &mut info),
            0
        );

        if info.eFrameType == videoFrameTypeSkip {
            panic!("Unexpected videoFrameTypeSkip")
        } else if info.eFrameType == videoFrameTypeInvalid {
            panic!("Unexpected videoFrameTypeInvalid")
        } else if info.eFrameType == videoFrameTypeIDR || info.eFrameType == videoFrameTypeI
            || info.eFrameType == videoFrameTypeP
            || info.eFrameType == videoFrameTypeIPMixed
        {
        } else {
            panic!("Unexpected frame: {:?}", info.eFrameType)
        }

        for spatial_id in 0..1 {
            for layer in 0..info.iLayerNum {
                if info.sLayerInfo[layer as usize].uiSpatialId != spatial_id {
                    continue;
                }

                let mut size = 0;
                for i in 0..info.sLayerInfo[layer as usize].iNalCount {
                    size += *info.sLayerInfo[layer as usize]
                        .pNalLengthInByte
                        .offset(i as isize)
                }
                if size > 0 {
                    out.extend_from_slice(from_raw_parts(
                        info.sLayerInfo[layer as usize].pBsBuf,
                        size as usize,
                    ))
                }
            }
        }

        assert!(out.len() > 0);

        WelsDestroySVCEncoder(encoder);
    }
}

#[test]
fn decode() {
    let mut decoder = null_mut();
    unsafe {
        assert_eq!(WelsCreateDecoder(&mut decoder), 0);
        assert!(!decoder.is_null());
        let param = SDecodingParam::default();
        assert_eq!((**decoder).Initialize.unwrap()(decoder, &param), 0);
        assert_eq!((**decoder).Uninitialize.unwrap()(decoder), 0);
        WelsDestroyDecoder(decoder);
    }
}