mp4parse_capi 0.17.0

Parser for ISO base media file format (mp4)
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278

use mp4parse::unstable::Indice;
use mp4parse_capi::*;
use std::io::Read;

extern "C" fn buf_read(buf: *mut u8, size: usize, userdata: *mut std::os::raw::c_void) -> isize {
    let input: &mut std::fs::File = unsafe { &mut *(userdata as *mut _) };
    let buf = unsafe { std::slice::from_raw_parts_mut(buf, size) };
    match input.read(buf) {
        Ok(n) => n as isize,
        Err(_) => -1,
    }
}

#[test]
fn parse_sample_table() {
    let mut file =
        std::fs::File::open("tests/bipbop_nonfragment_header.mp4").expect("Unknown file");
    let io = Mp4parseIo {
        read: Some(buf_read),
        userdata: &mut file as *mut _ as *mut std::os::raw::c_void,
    };

    unsafe {
        let mut parser = std::ptr::null_mut();
        let mut rv = mp4parse_new(&io, &mut parser);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert!(!parser.is_null());

        let mut counts: u32 = 0;
        rv = mp4parse_get_track_count(parser, &mut counts);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(counts, 2);

        let mut track_info = Mp4parseTrackInfo::default();
        rv = mp4parse_get_track_info(parser, 1, &mut track_info);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(track_info.track_type, Mp4parseTrackType::Audio);

        // Check audio smaple table
        let mut is_fragmented_file: u8 = 0;
        rv = mp4parse_is_fragmented(parser, track_info.track_id, &mut is_fragmented_file);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(is_fragmented_file, 0);

        let mut indice = Mp4parseByteData::default();
        rv = mp4parse_get_indice_table(parser, track_info.track_id, &mut indice);
        assert_eq!(rv, Mp4parseStatus::Ok);

        // Compare the value from stagefright.
        let audio_indice_0 = Indice {
            start_offset: 27_046.into(),
            end_offset: 27_052.into(),
            start_composition: 0.into(),
            end_composition: 1024.into(),
            start_decode: 0.into(),
            sync: true,
        };
        let audio_indice_215 = Indice {
            start_offset: 283_550.into(),
            end_offset: 283_556.into(),
            start_composition: 220160.into(),
            end_composition: 221184.into(),
            start_decode: 220160.into(),
            sync: true,
        };
        assert_eq!(indice.length, 216);
        assert_eq!(*indice.indices.offset(0), audio_indice_0);
        assert_eq!(*indice.indices.offset(215), audio_indice_215);

        // Check video smaple table
        rv = mp4parse_get_track_info(parser, 0, &mut track_info);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(track_info.track_type, Mp4parseTrackType::Video);

        let mut is_fragmented_file: u8 = 0;
        rv = mp4parse_is_fragmented(parser, track_info.track_id, &mut is_fragmented_file);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(is_fragmented_file, 0);

        let mut indice = Mp4parseByteData::default();
        rv = mp4parse_get_indice_table(parser, track_info.track_id, &mut indice);
        assert_eq!(rv, Mp4parseStatus::Ok);

        // Compare the last few data from stagefright.
        let video_indice_291 = Indice {
            start_offset: 280_226.into(),
            end_offset: 280_855.into(),
            start_composition: 876995.into(),
            end_composition: 879996.into(),
            start_decode: 873900.into(),
            sync: false,
        };
        let video_indice_292 = Indice {
            start_offset: 280_855.into(),
            end_offset: 281_297.into(),
            start_composition: 873996.into(),
            end_composition: 876995.into(),
            start_decode: 873901.into(),
            sync: false,
        };
        // TODO: start_composition time in stagefright is 9905000, but it is 9904999 in parser, it
        //       could be rounding error.
        //let video_indice_293 = Indice { start_offset: 281_297, end_offset: 281_919, start_composition: 9_905_000, end_composition: 9_938_344, start_decode: 9_776_666, sync: false };
        //let video_indice_294 = Indice { start_offset: 281_919, end_offset: 282_391, start_composition: 9_871_677, end_composition: 9_905_000, start_decode: 9_776_677, sync: false };
        let video_indice_295 = Indice {
            start_offset: 282_391.into(),
            end_offset: 283_032.into(),
            start_composition: 888995.into(),
            end_composition: 888996.into(),
            start_decode: 885900.into(),
            sync: false,
        };
        let video_indice_296 = Indice {
            start_offset: 283_092.into(),
            end_offset: 283_526.into(),
            start_composition: 885996.into(),
            end_composition: 888995.into(),
            start_decode: 885901.into(),
            sync: false,
        };

        assert_eq!(indice.length, 297);
        assert_eq!(*indice.indices.offset(291), video_indice_291);
        assert_eq!(*indice.indices.offset(292), video_indice_292);
        //assert_eq!(*indice.indices.offset(293), video_indice_293);
        //assert_eq!(*indice.indices.offset(294), video_indice_294);
        assert_eq!(*indice.indices.offset(295), video_indice_295);
        assert_eq!(*indice.indices.offset(296), video_indice_296);

        mp4parse_free(parser);
    }
}

#[test]
fn parse_sample_table_with_elst() {
    let mut file = std::fs::File::open("tests/short-cenc.mp4").expect("Unknown file");
    let io = Mp4parseIo {
        read: Some(buf_read),
        userdata: &mut file as *mut _ as *mut std::os::raw::c_void,
    };

    unsafe {
        let mut parser = std::ptr::null_mut();
        let mut rv = mp4parse_new(&io, &mut parser);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert!(!parser.is_null());

        let mut counts: u32 = 0;
        rv = mp4parse_get_track_count(parser, &mut counts);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(counts, 2);

        let mut track_info = Mp4parseTrackInfo::default();
        rv = mp4parse_get_track_info(parser, 1, &mut track_info);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(track_info.track_type, Mp4parseTrackType::Audio);

        // Check audio sample table
        let mut is_fragmented_file: u8 = std::u8::MAX;
        rv = mp4parse_is_fragmented(parser, track_info.track_id, &mut is_fragmented_file);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(is_fragmented_file, 0);

        let mut indice = Mp4parseByteData::default();
        rv = mp4parse_get_indice_table(parser, track_info.track_id, &mut indice);
        assert_eq!(rv, Mp4parseStatus::Ok);

        // Compare the value from stagefright.
        // Due to 'elst', the start_composition and end_composition are negative
        // at first two samples.
        let audio_indice_0 = Indice {
            start_offset: 6992.into(),
            end_offset: 7363.into(),
            start_composition: (-1600).into(),
            end_composition: (-576).into(),
            start_decode: 0.into(),
            sync: true,
        };
        let audio_indice_1 = Indice {
            start_offset: 7363.into(),
            end_offset: 7735.into(),
            start_composition: (-576).into(),
            end_composition: 448.into(),
            start_decode: 1024.into(),
            sync: true,
        };
        let audio_indice_2 = Indice {
            start_offset: 7735.into(),
            end_offset: 8106.into(),
            start_composition: 448.into(),
            end_composition: 1472.into(),
            start_decode: 2048.into(),
            sync: true,
        };
        assert_eq!(indice.length, 21);
        assert_eq!(*indice.indices.offset(0), audio_indice_0);
        assert_eq!(*indice.indices.offset(1), audio_indice_1);
        assert_eq!(*indice.indices.offset(2), audio_indice_2);

        mp4parse_free(parser);
    }
}

#[test]
fn parse_sample_table_with_negative_ctts() {
    let mut file = std::fs::File::open("tests/white.mp4").expect("Unknown file");
    let io = Mp4parseIo {
        read: Some(buf_read),
        userdata: &mut file as *mut _ as *mut std::os::raw::c_void,
    };

    unsafe {
        let mut parser = std::ptr::null_mut();
        let mut rv = mp4parse_new(&io, &mut parser);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert!(!parser.is_null());

        let mut counts: u32 = 0;
        rv = mp4parse_get_track_count(parser, &mut counts);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(counts, 1);

        let mut track_info = Mp4parseTrackInfo::default();
        rv = mp4parse_get_track_info(parser, 0, &mut track_info);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(track_info.track_type, Mp4parseTrackType::Video);

        let mut is_fragmented_file: u8 = std::u8::MAX;
        rv = mp4parse_is_fragmented(parser, track_info.track_id, &mut is_fragmented_file);
        assert_eq!(rv, Mp4parseStatus::Ok);
        assert_eq!(is_fragmented_file, 0);

        let mut indice = Mp4parseByteData::default();
        rv = mp4parse_get_indice_table(parser, track_info.track_id, &mut indice);
        assert_eq!(rv, Mp4parseStatus::Ok);

        // There are negative value in 'ctts' table.
        let video_indice_0 = Indice {
            start_offset: 48.into(),
            end_offset: 890.into(),
            start_composition: 0.into(),
            end_composition: 100.into(),
            start_decode: 0.into(),
            sync: true,
        };
        let video_indice_1 = Indice {
            start_offset: 890.into(),
            end_offset: 913.into(),
            start_composition: 400.into(),
            end_composition: 500.into(),
            start_decode: 100.into(),
            sync: false,
        };
        let video_indice_2 = Indice {
            start_offset: 913.into(),
            end_offset: 934.into(),
            start_composition: 200.into(),
            end_composition: 300.into(),
            start_decode: 200.into(),
            sync: false,
        };
        let video_indice_3 = Indice {
            start_offset: 934.into(),
            end_offset: 955.into(),
            start_composition: 100.into(),
            end_composition: 200.into(),
            start_decode: 300.into(),
            sync: false,
        };
        assert_eq!(indice.length, 300);
        assert_eq!(*indice.indices.offset(0), video_indice_0);
        assert_eq!(*indice.indices.offset(1), video_indice_1);
        assert_eq!(*indice.indices.offset(2), video_indice_2);
        assert_eq!(*indice.indices.offset(3), video_indice_3);

        mp4parse_free(parser);
    }
}