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Implement some more traits for AudioFormat and AudioFormatInfo

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This commit is contained in:
Sebastian Dröge 2017-08-10 11:14:08 +03:00
parent 6b11b8b751
commit cff116c3aa
1 changed files with 34 additions and 18 deletions
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52
gstreamer-audio/src/audio_format_info.rs
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@ -62,23 +62,39 @@ impl ::AudioFormat {
)) ))
} }
} }
pub fn from_string(s: &str) -> ::AudioFormat {
unsafe { from_glib(ffi::gst_audio_format_from_string(s.to_glib_none().0)) }
}
pub fn to_string(&self) -> &'static str {
unsafe {
CStr::from_ptr(ffi::gst_audio_format_to_string(self.to_glib()))
.to_str()
.unwrap()
}
}
} }
impl str::FromStr for ::AudioFormat { impl str::FromStr for ::AudioFormat {
type Err = (); type Err = ();
fn from_str(s: &str) -> Result<Self, ()> { fn from_str(s: &str) -> Result<Self, ()> {
unsafe { let format = Self::from_string(s);
let format = ffi::gst_audio_format_from_string(s.to_glib_none().0); if format == ::AudioFormat::Unknown {
if format == ffi::GST_AUDIO_FORMAT_UNKNOWN { Err(())
Err(()) } else {
} else { Ok(format)
Ok(from_glib(format))
}
} }
} }
} }
impl fmt::Display for ::AudioFormat {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
f.write_str(self.to_string())
}
}
#[cfg(target_endian = "big")] #[cfg(target_endian = "big")]
pub const AUDIO_FORMAT_S16: ::AudioFormat = ::AudioFormat::S16be; pub const AUDIO_FORMAT_S16: ::AudioFormat = ::AudioFormat::S16be;
#[cfg(target_endian = "big")] #[cfg(target_endian = "big")]
@ -308,9 +324,9 @@ impl fmt::Debug for AudioFormatInfo {
} }
} }
impl From<::AudioFormat> for AudioFormatInfo { impl fmt::Display for AudioFormatInfo {
fn from(f: ::AudioFormat) -> Self { fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Self::from_format(f) f.write_str(self.name())
} }
} }
@ -318,14 +334,14 @@ impl str::FromStr for ::AudioFormatInfo {
type Err = (); type Err = ();
fn from_str(s: &str) -> Result<Self, ()> { fn from_str(s: &str) -> Result<Self, ()> {
unsafe { let format = s.parse()?;
let format = ffi::gst_audio_format_from_string(s.to_glib_none().0); Ok(AudioFormatInfo::from_format(format))
if format == ffi::GST_AUDIO_FORMAT_UNKNOWN { }
Err(()) }
} else {
Ok(AudioFormatInfo::from_format(from_glib(format))) impl From<::AudioFormat> for AudioFormatInfo {
} fn from(f: ::AudioFormat) -> Self {
} Self::from_format(f)
} }
} }