rustdesk/magnum-opus
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Add support for Max and Auto bitrates through an enum

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Jean-Marc Valin 2016-07-20 16:47:06 -04:00 committed by Tad Hardesty
parent 6c6bec4c0c
commit 09f9d16148
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1 changed files with 28 additions and 4 deletions
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32
src/lib.rs
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@ -36,6 +36,10 @@ const OPUS_GET_INBAND_FEC: c_int = 4013; // out *i32
const OPUS_SET_PACKET_LOSS_PERC: c_int = 4014; // in i32
const OPUS_GET_PACKET_LOSS_PERC: c_int = 4015; // out *i32
// Bitrate
const OPUS_AUTO: c_int = -1000;
const OPUS_BITRATE_MAX: c_int = -1;
/// The possible applications for the codec.
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum Application {
@ -110,6 +114,17 @@ pub enum ErrorCode {
Unknown = -8,
}
/// Possible bitrates.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub enum Bitrate {
/// Explicit bitrate choice (in bits/second).
Bits(i32),
/// Maximum bitrate allowed (up to maximum number of bytes for the packet).
Max,
/// Default bitrate decided by the encoder (not recommended).
Auto,
}
/// Get the libopus version string.
pub fn version() -> &'static str {
// verison string should always be ASCII
@ -205,17 +220,26 @@ impl Encoder {
}
/// Set the encoder's bitrate.
pub fn set_bitrate(&mut self, value: i32) -> Result<()> {
let result = unsafe { ffi::opus_encoder_ctl(self.ptr, OPUS_SET_BITRATE, value) };
pub fn set_bitrate(&mut self, value: Bitrate) -> Result<()> {
let val: i32 = match value {
Bitrate::Auto => OPUS_AUTO,
Bitrate::Max => OPUS_BITRATE_MAX,
Bitrate::Bits(b) => b,
};
let result = unsafe { ffi::opus_encoder_ctl(self.ptr, OPUS_SET_BITRATE, val) };
check("opus_encoder_ctl(OPUS_SET_BITRATE)", result)
}
/// Get the encoder's bitrate.
pub fn get_bitrate(&mut self) -> Result<i32> {
pub fn get_bitrate(&mut self) -> Result<Bitrate> {
let mut value: i32 = 0;
let result = unsafe { ffi::opus_encoder_ctl(self.ptr, OPUS_GET_BITRATE, &mut value) };
try!(check("opus_encoder_ctl(OPUS_GET_BITRATE)", result));
Ok(value)
Ok(match value {
OPUS_AUTO => Bitrate::Auto,
OPUS_BITRATE_MAX => Bitrate::Max,
_ => Bitrate::Bits(value),
})
}
/// Configures the encoder's use of inband forward error correction (FEC).