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 NATIVE: 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 = _
sourcepub const fn bits(&self) -> c_ulonglong
pub const fn bits(&self) -> c_ulonglong
Returns the raw value of the flags currently stored.
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 underlying bit representation, unless that representation contains bits that do not correspond to a flag.
sourcepub const fn from_bits_truncate(bits: c_ulonglong) -> Self
pub const fn from_bits_truncate(bits: c_ulonglong) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: c_ulonglong) -> Self
pub const unsafe fn from_bits_unchecked(bits: c_ulonglong) -> Self
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
Safety
The caller of the bitflags!
macro can chose to allow or
disallow extra bits for their bitflags type.
The caller of from_bits_unchecked()
has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
sourcepub const fn intersects(&self, other: Self) -> bool
pub const fn intersects(&self, other: Self) -> bool
Returns true
if there are flags common to both self
and other
.
sourcepub const fn contains(&self, other: Self) -> bool
pub const fn contains(&self, other: Self) -> bool
Returns true
if all of the flags in other
are contained within self
.
sourcepub fn set(&mut self, other: Self, value: bool)
pub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
sourcepub const fn intersection(self, other: Self) -> Self
pub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self
and
other
.
Specifically, the returned set contains only the flags which are
present in both self
and other
.
This is equivalent to using the &
operator (e.g.
ops::BitAnd
), as in flags & other
.
sourcepub const fn union(self, other: Self) -> Self
pub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self
and other
.
Specifically, the returned set contains all flags which are
present in either self
or other
, including any which are
present in both (see Self::symmetric_difference
if that
is undesirable).
This is equivalent to using the |
operator (e.g.
ops::BitOr
), as in flags | other
.
sourcepub const fn difference(self, other: Self) -> Self
pub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self
and other
.
Specifically, the returned set contains all flags present in
self
, except for the ones present in other
.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other
(and this syntax is also supported).
This is equivalent to using the -
operator (e.g.
ops::Sub
), as in flags - other
.
sourcepub const fn symmetric_difference(self, other: Self) -> Self
pub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
in self
and other
.
Specifically, the returned set contains the flags present which
are present in self
or other
, but that are not present in
both. Equivalently, it contains the flags present in exactly
one of the sets self
and other
.
This is equivalent to using the ^
operator (e.g.
ops::BitXor
), as in flags ^ other
.
sourcepub const fn complement(self) -> Self
pub const fn complement(self) -> Self
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self
, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all()
and self
(e.g. Self::all() - self
)
This is equivalent to using the !
operator (e.g.
ops::Not
), as in !flags
.
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>>(
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);
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)
Disables all flags disabled in the set.
source§impl BitOr for ChannelLayout
impl BitOr for ChannelLayout
source§fn bitor(self, other: ChannelLayout) -> Self
fn bitor(self, other: ChannelLayout) -> Self
Returns the union of the two sets of flags.
§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)
Adds the set of flags.
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)
Toggles the set of flags.
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)
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 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
source§impl Hash for ChannelLayout
impl Hash 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 Ord for ChannelLayout
impl Ord for ChannelLayout
source§fn cmp(&self, other: &ChannelLayout) -> Ordering
fn cmp(&self, other: &ChannelLayout) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
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 PartialOrd for ChannelLayout
impl PartialOrd for ChannelLayout
source§fn partial_cmp(&self, other: &ChannelLayout) -> Option<Ordering>
fn partial_cmp(&self, other: &ChannelLayout) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl Sub for ChannelLayout
impl Sub for ChannelLayout
source§impl SubAssign for ChannelLayout
impl SubAssign for ChannelLayout
source§fn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.