[READ-ONLY] Mirror of https://github.com/probablykasper/redlux. AAC decoder for MPEG-4 and AAC files, with rodio support
aac
audio
decoder
mp4
package
Return Error::UnsupportedObjectType for AAC Main/SSR/LTP
+2
-3
+2
README.md
+2
README.md
···
7
7
8
8
Reads MPEG-4 containers using [rust-mp4](https://crates.io/crates/mp4), and then constructs ADTS headers for it. Decodes AAC to PCM using [fdk-aac c-bindings](https://crates.io/crates/fdk-aac). Check the examples for usage with [rodio](https://crates.io/crates/rodio).
9
9
10
+
Supports AAC-LC, HE-AAC v1 and HE-AAC v2.
11
+
10
12
## Caveats
11
13
1. It only decodes the first AAC track it finds in an MPEG-4 container.
12
14
2. Not sure if MPEG files with CRC are supported.
-3
src/adts.rs
-3
src/adts.rs
···
37
37
// EEFF_FFGH
38
38
let mut byte2 = 0b0000_0000;
39
39
let object_type = match object_type {
40
-
AudioObjectType::AacMain => 1,
41
40
AudioObjectType::AacLowComplexity => 2,
42
-
AudioObjectType::AacScalableSampleRate => 3,
43
-
AudioObjectType::AacLongTermPrediction => 4,
44
41
// Audio object types 5 (SBR) and 29 (PS) are coerced to type 2 (AAC-LC).
45
42
// The decoder will have to detect SBR/PS. This is called "Implicit
46
43
// Signaling" and it's the only option for ADTS.