use std::cmp::Ordering;
use std::ffi::CStr;
use std::fmt;
use std::str;
use glib::translate::{from_glib, from_glib_none, FromGlib, IntoGlib, ToGlibPtr, ToGlibPtrMut};
use glib::StaticType;
#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
pub enum AudioEndianness {
Unknown,
LittleEndian = 1234,
BigEndian = 4321,
}
impl FromGlib<i32> for AudioEndianness {
#[allow(unused_unsafe)]
unsafe fn from_glib(value: i32) -> Self {
assert_initialized_main_thread!();
match value {
1234 => Self::LittleEndian,
4321 => Self::BigEndian,
_ => Self::Unknown,
}
}
}
impl IntoGlib for AudioEndianness {
type GlibType = i32;
fn into_glib(self) -> i32 {
match self {
Self::LittleEndian => 1234,
Self::BigEndian => 4321,
_ => 0,
}
}
}
#[doc(alias = "GstAudioFormatInfo")]
pub struct AudioFormatInfo(&'static ffi::GstAudioFormatInfo);
impl AudioFormatInfo {
pub fn from_format(format: crate::AudioFormat) -> Self {
assert_initialized_main_thread!();
unsafe {
let info = ffi::gst_audio_format_get_info(format.into_glib());
assert!(!info.is_null());
Self(&*info)
}
}
pub fn format(&self) -> crate::AudioFormat {
unsafe { from_glib(self.0.format) }
}
pub fn name<'a>(&self) -> &'a str {
unsafe { CStr::from_ptr(self.0.name).to_str().unwrap() }
}
pub fn description<'a>(&self) -> &'a str {
unsafe { CStr::from_ptr(self.0.description).to_str().unwrap() }
}
pub fn flags(&self) -> crate::AudioFormatFlags {
unsafe { from_glib(self.0.flags) }
}
pub fn endianness(&self) -> AudioEndianness {
unsafe { from_glib(self.0.endianness) }
}
pub fn width(&self) -> u32 {
self.0.width as u32
}
pub fn depth(&self) -> u32 {
self.0.depth as u32
}
pub fn unpack_format(&self) -> crate::AudioFormat {
unsafe { from_glib(self.0.unpack_format) }
}
pub fn silence<'a>(&self) -> &'a [u8] {
&self.0.silence
}
pub fn unpack(&self, flags: crate::AudioPackFlags, dest: &mut [u8], src: &[u8]) {
let unpack_format = Self::from_format(self.unpack_format());
let unpack_width = unpack_format.width() as usize;
if unpack_width == 0 || self.0.unpack_func.is_none() {
panic!("No unpack format for {:?}", self);
}
let self_width = self.width() as usize;
if self_width == 0 {
panic!("No width for {:?}", self);
}
if src.len() % (self_width / 8) != 0 {
panic!("Incomplete number of samples in src");
}
let nsamples = src.len() / (self_width / 8);
if dest.len() != nsamples * (unpack_width / 8) {
panic!("Invalid dest length");
}
unsafe {
(self.0.unpack_func.as_ref().unwrap())(
self.0,
flags.into_glib(),
dest.as_mut_ptr() as *mut _,
src.as_ptr() as *const _,
nsamples as i32,
);
}
}
pub fn pack(&self, flags: crate::AudioPackFlags, dest: &mut [u8], src: &[u8]) {
let unpack_format = Self::from_format(self.unpack_format());
let unpack_width = unpack_format.width() as usize;
if unpack_width == 0 || self.0.pack_func.is_none() {
panic!("No unpack format for {:?}", self);
}
let self_width = self.width() as usize;
if self_width == 0 {
panic!("No width for {:?}", self);
}
if src.len() % (unpack_width / 8) != 0 {
panic!("Incomplete number of samples in src");
}
let nsamples = src.len() / (unpack_width / 8);
if dest.len() != nsamples * (self_width / 8) {
panic!("Invalid dest length");
}
unsafe {
(self.0.pack_func.as_ref().unwrap())(
self.0,
flags.into_glib(),
src.as_ptr() as *const _,
dest.as_mut_ptr() as *mut _,
nsamples as i32,
);
}
}
#[doc(alias = "gst_audio_format_info_fill_silence")]
#[doc(alias = "gst_audio_format_fill_silence")]
pub fn fill_silence(&self, dest: &mut [u8]) {
let self_width = self.width() as usize;
if self_width == 0 {
panic!("Filling with silence unsupported");
}
if dest.len() % (self_width / 8) != 0 {
panic!("Incomplete number of samples in dest");
}
unsafe {
cfg_if::cfg_if! {
if #[cfg(feature = "v1_20")] {
ffi::gst_audio_format_info_fill_silence(self.0, dest.as_mut_ptr() as *mut _, dest.len())
} else {
ffi::gst_audio_format_fill_silence(self.0, dest.as_mut_ptr() as *mut _, dest.len())
}
}
}
}
pub fn is_float(&self) -> bool {
self.flags().contains(crate::AudioFormatFlags::FLOAT)
}
pub fn is_integer(&self) -> bool {
self.flags().contains(crate::AudioFormatFlags::INTEGER)
}
pub fn is_signed(&self) -> bool {
self.flags().contains(crate::AudioFormatFlags::SIGNED)
}
pub fn is_little_endian(&self) -> bool {
self.endianness() == AudioEndianness::LittleEndian
}
pub fn is_big_endian(&self) -> bool {
self.endianness() == AudioEndianness::BigEndian
}
}
unsafe impl Sync for AudioFormatInfo {}
unsafe impl Send for AudioFormatInfo {}
impl PartialEq for AudioFormatInfo {
fn eq(&self, other: &Self) -> bool {
self.format() == other.format()
}
}
impl Eq for AudioFormatInfo {}
impl PartialOrd for AudioFormatInfo {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for AudioFormatInfo {
fn cmp(&self, other: &Self) -> Ordering {
self.depth()
.cmp(&other.depth())
.then_with(|| self.width().cmp(&other.width()))
.then_with(|| {
match (
self.flags().contains(crate::AudioFormatFlags::FLOAT),
other.flags().contains(crate::AudioFormatFlags::FLOAT),
) {
(true, false) => Ordering::Greater,
(false, true) => Ordering::Less,
_ => Ordering::Equal,
}
})
.then_with(|| {
match (
self.flags().contains(crate::AudioFormatFlags::SIGNED),
other.flags().contains(crate::AudioFormatFlags::SIGNED),
) {
(true, false) => Ordering::Greater,
(false, true) => Ordering::Less,
_ => Ordering::Equal,
}
})
.then_with(|| match (self.endianness(), other.endianness()) {
(crate::AudioEndianness::LittleEndian, crate::AudioEndianness::BigEndian) => {
#[cfg(target_endian = "little")]
{
Ordering::Greater
}
#[cfg(target_endian = "big")]
{
Ordering::Less
}
}
(crate::AudioEndianness::BigEndian, crate::AudioEndianness::LittleEndian) => {
#[cfg(target_endian = "little")]
{
Ordering::Less
}
#[cfg(target_endian = "big")]
{
Ordering::Greater
}
}
_ => Ordering::Equal,
})
}
}
impl fmt::Debug for AudioFormatInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("AudioFormatInfo")
.field("format", &self.format())
.field("name", &self.name())
.field("description", &self.description())
.field("flags", &self.flags())
.field("endianness", &self.endianness())
.field("width", &self.width())
.field("depth", &self.depth())
.field("silence", &self.silence())
.finish()
}
}
impl fmt::Display for AudioFormatInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(self.name())
}
}
impl str::FromStr for crate::AudioFormatInfo {
type Err = glib::BoolError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
skip_assert_initialized!();
let format = s.parse()?;
Ok(Self::from_format(format))
}
}
impl From<crate::AudioFormat> for AudioFormatInfo {
fn from(f: crate::AudioFormat) -> Self {
skip_assert_initialized!();
Self::from_format(f)
}
}
impl glib::types::StaticType for AudioFormatInfo {
fn static_type() -> glib::types::Type {
unsafe { glib::translate::from_glib(ffi::gst_audio_format_info_get_type()) }
}
}
impl glib::value::ValueType for AudioFormatInfo {
type Type = Self;
}
#[doc(hidden)]
unsafe impl<'a> glib::value::FromValue<'a> for AudioFormatInfo {
type Checker = glib::value::GenericValueTypeOrNoneChecker<Self>;
unsafe fn from_value(value: &'a glib::Value) -> Self {
skip_assert_initialized!();
from_glib_none(glib::gobject_ffi::g_value_get_boxed(value.to_glib_none().0)
as *mut ffi::GstAudioFormatInfo)
}
}
#[doc(hidden)]
impl glib::value::ToValue for AudioFormatInfo {
fn to_value(&self) -> glib::Value {
let mut value = glib::Value::for_value_type::<Self>();
unsafe {
glib::gobject_ffi::g_value_set_boxed(
value.to_glib_none_mut().0,
self.to_glib_none().0 as *mut _,
)
}
value
}
fn value_type(&self) -> glib::Type {
Self::static_type()
}
}
#[doc(hidden)]
impl glib::value::ToValueOptional for AudioFormatInfo {
fn to_value_optional(s: Option<&Self>) -> glib::Value {
skip_assert_initialized!();
let mut value = glib::Value::for_value_type::<Self>();
unsafe {
glib::gobject_ffi::g_value_set_boxed(
value.to_glib_none_mut().0,
s.to_glib_none().0 as *mut _,
)
}
value
}
}
#[doc(hidden)]
impl glib::translate::GlibPtrDefault for AudioFormatInfo {
type GlibType = *mut ffi::GstAudioFormatInfo;
}
#[doc(hidden)]
impl<'a> glib::translate::ToGlibPtr<'a, *const ffi::GstAudioFormatInfo> for AudioFormatInfo {
type Storage = &'a Self;
fn to_glib_none(&'a self) -> glib::translate::Stash<'a, *const ffi::GstAudioFormatInfo, Self> {
glib::translate::Stash(self.0, self)
}
fn to_glib_full(&self) -> *const ffi::GstAudioFormatInfo {
unimplemented!()
}
}
#[doc(hidden)]
impl glib::translate::FromGlibPtrNone<*mut ffi::GstAudioFormatInfo> for AudioFormatInfo {
#[inline]
unsafe fn from_glib_none(ptr: *mut ffi::GstAudioFormatInfo) -> Self {
Self(&*ptr)
}
}
#[doc(hidden)]
impl glib::translate::FromGlibPtrNone<*const ffi::GstAudioFormatInfo> for AudioFormatInfo {
#[inline]
unsafe fn from_glib_none(ptr: *const ffi::GstAudioFormatInfo) -> Self {
Self(&*ptr)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_get() {
gst::init().unwrap();
let info = AudioFormatInfo::from_format(crate::AudioFormat::S16le);
assert_eq!(info.name(), "S16LE");
let other_info = "S16LE".parse().unwrap();
assert_eq!(info, other_info);
}
#[test]
fn pack_unpack() {
gst::init().unwrap();
let info = AudioFormatInfo::from_format(crate::AudioFormat::S16le);
let unpack_info = AudioFormatInfo::from_format(info.unpack_format());
assert!(unpack_info.width() > 0);
let input = [0, 0, 255, 255, 128, 128, 64, 64];
let mut unpacked = [0; 16];
let mut output = [0; 8];
info.unpack(crate::AudioPackFlags::empty(), &mut unpacked, &input);
info.pack(crate::AudioPackFlags::empty(), &mut output, &unpacked);
assert_eq!(input, output);
}
}