audio_decoder_test_lib/
cvsd.rs

1// Copyright 2020 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use fidl_fuchsia_media::*;
6use std::path::Path;
7use std::{fs, io};
8use stream_processor_test::*;
9
10/// Represents an CVSD elementary stream.
11pub struct CvsdStream {
12    data: Vec<u8>,
13    chunk_frames: usize,
14}
15
16impl CvsdStream {
17    /// Constructs an CVSD elementary stream from a file with raw elementary stream data.
18    pub fn from_file(filename: impl AsRef<Path>, chunk_frames: usize) -> io::Result<Self> {
19        Ok(CvsdStream { data: fs::read(filename)?, chunk_frames })
20    }
21    /// Constructs an CVSD elementary stream from raw data.
22    pub fn from_data(data: Vec<u8>, chunk_frames: usize) -> Self {
23        CvsdStream { data, chunk_frames }
24    }
25}
26
27impl ElementaryStream for CvsdStream {
28    fn format_details(&self, version_ordinal: u64) -> FormatDetails {
29        FormatDetails {
30            format_details_version_ordinal: Some(version_ordinal),
31            mime_type: Some(String::from("audio/cvsd")),
32            ..Default::default()
33        }
34    }
35
36    fn is_access_units(&self) -> bool {
37        false
38    }
39
40    fn stream<'a>(&'a self) -> Box<dyn Iterator<Item = ElementaryStreamChunk> + 'a> {
41        Box::new(self.data.chunks(self.chunk_frames).map(|frame| ElementaryStreamChunk {
42            start_access_unit: false,
43            known_end_access_unit: false,
44            data: frame.to_vec(),
45            significance: Significance::Audio(AudioSignificance::Encoded),
46            timestamp: None,
47        }))
48    }
49}
audio_decoder_test_lib/cvsd.rs

audio_decoder_test_lib/
cvsd.rs
