Struct ffmpeg_next::util::channel_layout::ChannelLayout
source · pub struct ChannelLayout(/* private fields */);
Implementations§
source§impl ChannelLayout
impl ChannelLayout
pub const FRONT_LEFT: Self = _
pub const FRONT_RIGHT: Self = _
pub const FRONT_CENTER: Self = _
pub const LOW_FREQUENCY: Self = _
pub const BACK_LEFT: Self = _
pub const BACK_RIGHT: Self = _
pub const FRONT_LEFT_OF_CENTER: Self = _
pub const FRONT_RIGHT_OF_CENTER: Self = _
pub const BACK_CENTER: Self = _
pub const SIDE_LEFT: Self = _
pub const SIDE_RIGHT: Self = _
pub const TOP_CENTER: Self = _
pub const TOP_FRONT_LEFT: Self = _
pub const TOP_FRONT_CENTER: Self = _
pub const TOP_FRONT_RIGHT: Self = _
pub const TOP_BACK_LEFT: Self = _
pub const TOP_BACK_CENTER: Self = _
pub const TOP_BACK_RIGHT: Self = _
pub const STEREO_LEFT: Self = _
pub const STEREO_RIGHT: Self = _
pub const WIDE_LEFT: Self = _
pub const WIDE_RIGHT: Self = _
pub const SURROUND_DIRECT_LEFT: Self = _
pub const SURROUND_DIRECT_RIGHT: Self = _
pub const LOW_FREQUENCY_2: Self = _
pub const MONO: Self = _
pub const STEREO: Self = _
pub const _2POINT1: Self = _
pub const _2_1: Self = _
pub const SURROUND: Self = _
pub const _3POINT1: Self = _
pub const _4POINT0: Self = _
pub const _4POINT1: Self = _
pub const _2_2: Self = _
pub const QUAD: Self = _
pub const _5POINT0: Self = _
pub const _5POINT1: Self = _
pub const _5POINT0_BACK: Self = _
pub const _5POINT1_BACK: Self = _
pub const _6POINT0: Self = _
pub const _6POINT0_FRONT: Self = _
pub const HEXAGONAL: Self = _
pub const _6POINT1: Self = _
pub const _6POINT1_BACK: Self = _
pub const _6POINT1_FRONT: Self = _
pub const _7POINT0: Self = _
pub const _7POINT0_FRONT: Self = _
pub const _7POINT1: Self = _
pub const _7POINT1_WIDE: Self = _
pub const _7POINT1_WIDE_BACK: Self = _
pub const OCTAGONAL: Self = _
pub const HEXADECAGONAL: Self = _
pub const STEREO_DOWNMIX: Self = _
source§impl ChannelLayout
impl ChannelLayout
sourcepub const fn bits(&self) -> c_ulonglong
pub const fn bits(&self) -> c_ulonglong
Get the underlying bits value.
The returned value is exactly the bits set in this flags value.
Examples found in repository?
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fn filter(
spec: &str,
decoder: &codec::decoder::Audio,
encoder: &codec::encoder::Audio,
) -> Result<filter::Graph, ffmpeg::Error> {
let mut filter = filter::Graph::new();
let args = format!(
"time_base={}:sample_rate={}:sample_fmt={}:channel_layout=0x{:x}",
decoder.time_base(),
decoder.rate(),
decoder.format().name(),
decoder.channel_layout().bits()
);
filter.add(&filter::find("abuffer").unwrap(), "in", &args)?;
filter.add(&filter::find("abuffersink").unwrap(), "out", "")?;
{
let mut out = filter.get("out").unwrap();
out.set_sample_format(encoder.format());
out.set_channel_layout(encoder.channel_layout());
out.set_sample_rate(encoder.rate());
}
filter.output("in", 0)?.input("out", 0)?.parse(spec)?;
filter.validate()?;
println!("{}", filter.dump());
if let Some(codec) = encoder.codec() {
if !codec
.capabilities()
.contains(ffmpeg::codec::capabilities::Capabilities::VARIABLE_FRAME_SIZE)
{
filter
.get("out")
.unwrap()
.sink()
.set_frame_size(encoder.frame_size());
}
}
Ok(filter)
}
sourcepub const fn from_bits(bits: c_ulonglong) -> Option<Self>
pub const fn from_bits(bits: c_ulonglong) -> Option<Self>
Convert from a bits value.
This method will return None
if any unknown bits are set.
sourcepub const fn from_bits_truncate(bits: c_ulonglong) -> Self
pub const fn from_bits_truncate(bits: c_ulonglong) -> Self
Convert from a bits value, unsetting any unknown bits.
sourcepub const fn from_bits_retain(bits: c_ulonglong) -> Self
pub const fn from_bits_retain(bits: c_ulonglong) -> Self
Convert from a bits value exactly.
sourcepub fn from_name(name: &str) -> Option<Self>
pub fn from_name(name: &str) -> Option<Self>
Get a flags value with the bits of a flag with the given name set.
This method will return None
if name
is empty or doesn’t
correspond to any named flag.
sourcepub const fn intersects(&self, other: Self) -> bool
pub const fn intersects(&self, other: Self) -> bool
Whether any set bits in a source flags value are also set in a target flags value.
sourcepub const fn contains(&self, other: Self) -> bool
pub const fn contains(&self, other: Self) -> bool
Whether all set bits in a source flags value are also set in a target flags value.
sourcepub fn remove(&mut self, other: Self)
pub fn remove(&mut self, other: Self)
The intersection of a source flags value with the complement of a target flags value (&!
).
This method is not equivalent to self & !other
when other
has unknown bits set.
remove
won’t truncate other
, but the !
operator will.
sourcepub fn toggle(&mut self, other: Self)
pub fn toggle(&mut self, other: Self)
The bitwise exclusive-or (^
) of the bits in two flags values.
sourcepub fn set(&mut self, other: Self, value: bool)
pub fn set(&mut self, other: Self, value: bool)
Call insert
when value
is true
or remove
when value
is false
.
sourcepub const fn intersection(self, other: Self) -> Self
pub const fn intersection(self, other: Self) -> Self
The bitwise and (&
) of the bits in two flags values.
sourcepub const fn union(self, other: Self) -> Self
pub const fn union(self, other: Self) -> Self
The bitwise or (|
) of the bits in two flags values.
sourcepub const fn difference(self, other: Self) -> Self
pub const fn difference(self, other: Self) -> Self
The intersection of a source flags value with the complement of a target flags value (&!
).
This method is not equivalent to self & !other
when other
has unknown bits set.
difference
won’t truncate other
, but the !
operator will.
sourcepub const fn symmetric_difference(self, other: Self) -> Self
pub const fn symmetric_difference(self, other: Self) -> Self
The bitwise exclusive-or (^
) of the bits in two flags values.
sourcepub const fn complement(self) -> Self
pub const fn complement(self) -> Self
The bitwise negation (!
) of the bits in a flags value, truncating the result.
source§impl ChannelLayout
impl ChannelLayout
sourcepub const fn iter(&self) -> Iter<ChannelLayout>
pub const fn iter(&self) -> Iter<ChannelLayout>
Yield a set of contained flags values.
Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.
sourcepub const fn iter_names(&self) -> IterNames<ChannelLayout>
pub const fn iter_names(&self) -> IterNames<ChannelLayout>
Yield a set of contained named flags values.
This method is like iter
, except only yields bits in contained named flags.
Any unknown bits, or bits not corresponding to a contained flag will not be yielded.
source§impl ChannelLayout
impl ChannelLayout
sourcepub fn channels(&self) -> i32
pub fn channels(&self) -> i32
Examples found in repository?
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fn transcoder<P: AsRef<Path> + ?Sized>(
ictx: &mut format::context::Input,
octx: &mut format::context::Output,
path: &P,
filter_spec: &str,
) -> Result<Transcoder, ffmpeg::Error> {
let input = ictx
.streams()
.best(media::Type::Audio)
.expect("could not find best audio stream");
let context = ffmpeg::codec::context::Context::from_parameters(input.parameters())?;
let mut decoder = context.decoder().audio()?;
let codec = ffmpeg::encoder::find(octx.format().codec(path, media::Type::Audio))
.expect("failed to find encoder")
.audio()?;
let global = octx
.format()
.flags()
.contains(ffmpeg::format::flag::Flags::GLOBAL_HEADER);
decoder.set_parameters(input.parameters())?;
let mut output = octx.add_stream(codec)?;
let context = ffmpeg::codec::context::Context::from_parameters(output.parameters())?;
let mut encoder = context.encoder().audio()?;
let channel_layout = codec
.channel_layouts()
.map(|cls| cls.best(decoder.channel_layout().channels()))
.unwrap_or(ffmpeg::channel_layout::ChannelLayout::STEREO);
if global {
encoder.set_flags(ffmpeg::codec::flag::Flags::GLOBAL_HEADER);
}
encoder.set_rate(decoder.rate() as i32);
encoder.set_channel_layout(channel_layout);
#[cfg(not(feature = "ffmpeg_7_0"))]
{
encoder.set_channels(channel_layout.channels());
}
encoder.set_format(
codec
.formats()
.expect("unknown supported formats")
.next()
.unwrap(),
);
encoder.set_bit_rate(decoder.bit_rate());
encoder.set_max_bit_rate(decoder.max_bit_rate());
encoder.set_time_base((1, decoder.rate() as i32));
output.set_time_base((1, decoder.rate() as i32));
let encoder = encoder.open_as(codec)?;
output.set_parameters(&encoder);
let filter = filter(filter_spec, &decoder, &encoder)?;
let in_time_base = decoder.time_base();
let out_time_base = output.time_base();
Ok(Transcoder {
stream: input.index(),
filter,
decoder,
encoder,
in_time_base,
out_time_base,
})
}
pub fn default(number: i32) -> ChannelLayout
Trait Implementations§
source§impl Binary for ChannelLayout
impl Binary for ChannelLayout
source§impl BitAnd for ChannelLayout
impl BitAnd for ChannelLayout
source§impl BitAndAssign for ChannelLayout
impl BitAndAssign for ChannelLayout
source§fn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
The bitwise and (&
) of the bits in two flags values.
source§impl BitOr for ChannelLayout
impl BitOr for ChannelLayout
source§fn bitor(self, other: ChannelLayout) -> Self
fn bitor(self, other: ChannelLayout) -> Self
The bitwise or (|
) of the bits in two flags values.
§type Output = ChannelLayout
type Output = ChannelLayout
|
operator.source§impl BitOrAssign for ChannelLayout
impl BitOrAssign for ChannelLayout
source§fn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
The bitwise or (|
) of the bits in two flags values.
source§impl BitXor for ChannelLayout
impl BitXor for ChannelLayout
source§impl BitXorAssign for ChannelLayout
impl BitXorAssign for ChannelLayout
source§fn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
The bitwise exclusive-or (^
) of the bits in two flags values.
source§impl Clone for ChannelLayout
impl Clone for ChannelLayout
source§fn clone(&self) -> ChannelLayout
fn clone(&self) -> ChannelLayout
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ChannelLayout
impl Debug for ChannelLayout
source§impl Extend<ChannelLayout> for ChannelLayout
impl Extend<ChannelLayout> for ChannelLayout
source§fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
The bitwise or (|
) of the bits in each flags value.
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)source§impl Flags for ChannelLayout
impl Flags for ChannelLayout
source§const FLAGS: &'static [Flag<ChannelLayout>] = _
const FLAGS: &'static [Flag<ChannelLayout>] = _
source§fn bits(&self) -> c_ulonglong
fn bits(&self) -> c_ulonglong
source§fn from_bits_retain(bits: c_ulonglong) -> ChannelLayout
fn from_bits_retain(bits: c_ulonglong) -> ChannelLayout
source§fn from_bits_truncate(bits: Self::Bits) -> Self
fn from_bits_truncate(bits: Self::Bits) -> Self
source§fn from_name(name: &str) -> Option<Self>
fn from_name(name: &str) -> Option<Self>
source§fn iter_names(&self) -> IterNames<Self>
fn iter_names(&self) -> IterNames<Self>
source§fn intersects(&self, other: Self) -> boolwhere
Self: Sized,
fn intersects(&self, other: Self) -> boolwhere
Self: Sized,
source§fn contains(&self, other: Self) -> boolwhere
Self: Sized,
fn contains(&self, other: Self) -> boolwhere
Self: Sized,
source§fn insert(&mut self, other: Self)where
Self: Sized,
fn insert(&mut self, other: Self)where
Self: Sized,
|
) of the bits in two flags values.source§fn remove(&mut self, other: Self)where
Self: Sized,
fn remove(&mut self, other: Self)where
Self: Sized,
&!
). Read moresource§fn toggle(&mut self, other: Self)where
Self: Sized,
fn toggle(&mut self, other: Self)where
Self: Sized,
^
) of the bits in two flags values.source§fn intersection(self, other: Self) -> Self
fn intersection(self, other: Self) -> Self
&
) of the bits in two flags values.source§fn difference(self, other: Self) -> Self
fn difference(self, other: Self) -> Self
&!
). Read moresource§fn symmetric_difference(self, other: Self) -> Self
fn symmetric_difference(self, other: Self) -> Self
^
) of the bits in two flags values.source§fn complement(self) -> Self
fn complement(self) -> Self
!
) of the bits in a flags value, truncating the result.source§impl FromIterator<ChannelLayout> for ChannelLayout
impl FromIterator<ChannelLayout> for ChannelLayout
source§fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
The bitwise or (|
) of the bits in each flags value.
source§impl IntoIterator for ChannelLayout
impl IntoIterator for ChannelLayout
source§impl LowerHex for ChannelLayout
impl LowerHex for ChannelLayout
source§impl Not for ChannelLayout
impl Not for ChannelLayout
source§impl Octal for ChannelLayout
impl Octal for ChannelLayout
source§impl PartialEq for ChannelLayout
impl PartialEq for ChannelLayout
source§fn eq(&self, other: &ChannelLayout) -> bool
fn eq(&self, other: &ChannelLayout) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PublicFlags for ChannelLayout
impl PublicFlags for ChannelLayout
source§impl Sub for ChannelLayout
impl Sub for ChannelLayout
source§fn sub(self, other: Self) -> Self
fn sub(self, other: Self) -> Self
The intersection of a source flags value with the complement of a target flags value (&!
).
This method is not equivalent to self & !other
when other
has unknown bits set.
difference
won’t truncate other
, but the !
operator will.
§type Output = ChannelLayout
type Output = ChannelLayout
-
operator.source§impl SubAssign for ChannelLayout
impl SubAssign for ChannelLayout
source§fn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
The intersection of a source flags value with the complement of a target flags value (&!
).
This method is not equivalent to self & !other
when other
has unknown bits set.
difference
won’t truncate other
, but the !
operator will.