//! Packets and decoded frames functionality.
use std::cmp::max;
//use std::collections::HashMap;
use std::fmt;
pub use std::sync::Arc;
pub use crate::formats::*;
pub use crate::refs::*;
use std::str::FromStr;
/// Audio stream information.
#[allow(dead_code)]
#[derive(Clone,Copy,PartialEq)]
pub struct NAAudioInfo {
/// Sample rate.
pub sample_rate: u32,
/// Number of channels.
pub channels: u8,
/// Audio sample format.
pub format: NASoniton,
/// Length of one audio block in samples.
pub block_len: usize,
}
impl NAAudioInfo {
/// Constructs a new `NAAudioInfo` instance.
pub fn new(sr: u32, ch: u8, fmt: NASoniton, bl: usize) -> Self {
NAAudioInfo { sample_rate: sr, channels: ch, format: fmt, block_len: bl }
}
/// Returns audio sample rate.
pub fn get_sample_rate(&self) -> u32 { self.sample_rate }
/// Returns the number of channels.
pub fn get_channels(&self) -> u8 { self.channels }
/// Returns sample format.
pub fn get_format(&self) -> NASoniton { self.format }
/// Returns one audio block duration in samples.
pub fn get_block_len(&self) -> usize { self.block_len }
}
impl fmt::Display for NAAudioInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{} Hz, {} ch", self.sample_rate, self.channels)
}
}
/// Video stream information.
#[allow(dead_code)]
#[derive(Clone,Copy,PartialEq)]
pub struct NAVideoInfo {
/// Picture width.
pub width: usize,
/// Picture height.
pub height: usize,
/// Picture is stored downside up.
pub flipped: bool,
/// Picture pixel format.
pub format: NAPixelFormaton,
/// Declared bits per sample.
pub bits: u8,
}
impl NAVideoInfo {
/// Constructs a new `NAVideoInfo` instance.
pub fn new(w: usize, h: usize, flip: bool, fmt: NAPixelFormaton) -> Self {
let bits = fmt.get_total_depth();
NAVideoInfo { width: w, height: h, flipped: flip, format: fmt, bits }
}
/// Returns picture width.
pub fn get_width(&self) -> usize { self.width as usize }
/// Returns picture height.
pub fn get_height(&self) -> usize { self.height as usize }
/// Returns picture orientation.
pub fn is_flipped(&self) -> bool { self.flipped }
/// Returns picture pixel format.
pub fn get_format(&self) -> NAPixelFormaton { self.format }
/// Sets new picture width.
pub fn set_width(&mut self, w: usize) { self.width = w; }
/// Sets new picture height.
pub fn set_height(&mut self, h: usize) { self.height = h; }
}
impl fmt::Display for NAVideoInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}x{}", self.width, self.height)
}
}
/// A list of possible stream information types.
#[derive(Clone,Copy,PartialEq)]
pub enum NACodecTypeInfo {
/// No codec present.
None,
/// Audio codec information.
Audio(NAAudioInfo),
/// Video codec information.
Video(NAVideoInfo),
}
impl NACodecTypeInfo {
/// Returns video stream information.
pub fn get_video_info(&self) -> Option<NAVideoInfo> {
match *self {
NACodecTypeInfo::Video(vinfo) => Some(vinfo),
_ => None,
}
}
/// Returns audio stream information.
pub fn get_audio_info(&self) -> Option<NAAudioInfo> {
match *self {
NACodecTypeInfo::Audio(ainfo) => Some(ainfo),
_ => None,
}
}
/// Reports whether the current stream is video stream.
pub fn is_video(&self) -> bool {
match *self {
NACodecTypeInfo::Video(_) => true,
_ => false,
}
}
/// Reports whether the current stream is audio stream.
pub fn is_audio(&self) -> bool {
match *self {
NACodecTypeInfo::Audio(_) => true,
_ => false,
}
}
}
impl fmt::Display for NACodecTypeInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let ret = match *self {
NACodecTypeInfo::None => "".to_string(),
NACodecTypeInfo::Audio(fmt) => format!("{}", fmt),
NACodecTypeInfo::Video(fmt) => format!("{}", fmt),
};
write!(f, "{}", ret)
}
}
/// Decoded video frame.
///
/// NihAV frames are stored in native type (8/16/32-bit elements) inside a single buffer.
/// In case of image with several components those components are stored sequentially and can be accessed in the buffer starting at corresponding component offset.
#[derive(Clone)]
pub struct NAVideoBuffer<T> {
info: NAVideoInfo,
data: NABufferRef<Vec<T>>,
offs: Vec<usize>,
strides: Vec<usize>,
}
impl<T: Clone> NAVideoBuffer<T> {
/// Returns the component offset (0 for all unavailable offsets).
pub fn get_offset(&self, idx: usize) -> usize {
if idx >= self.offs.len() { 0 }
else { self.offs[idx] }
}
/// Returns picture info.
pub fn get_info(&self) -> NAVideoInfo { self.info }
/// Returns an immutable reference to the data.
pub fn get_data(&self) -> &Vec<T> { self.data.as_ref() }
/// Returns a mutable reference to the data.
pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
/// Returns the number of components in picture format.
pub fn get_num_components(&self) -> usize { self.offs.len() }
/// Creates a copy of current `NAVideoBuffer`.
pub fn copy_buffer(&mut self) -> Self {
let mut data: Vec<T> = Vec::with_capacity(self.data.len());
data.clone_from(self.data.as_ref());
let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len());
offs.clone_from(&self.offs);
let mut strides: Vec<usize> = Vec::with_capacity(self.strides.len());
strides.clone_from(&self.strides);
NAVideoBuffer { info: self.info, data: NABufferRef::new(data), offs, strides }
}
/// Returns stride (distance between subsequent lines) for the requested component.
pub fn get_stride(&self, idx: usize) -> usize {
if idx >= self.strides.len() { return 0; }
self.strides[idx]
}
/// Returns requested component dimensions.
pub fn get_dimensions(&self, idx: usize) -> (usize, usize) {
get_plane_size(&self.info, idx)
}
/// Converts current instance into buffer reference.
pub fn into_ref(self) -> NABufferRef<Self> {
NABufferRef::new(self)
}
fn print_contents(&self, datatype: &str) {
println!("{} video buffer size {}", datatype, self.data.len());
println!(" format {}", self.info);
print!(" offsets:");
for off in self.offs.iter() {
print!(" {}", *off);
}
println!();
print!(" strides:");
for stride in self.strides.iter() {
print!(" {}", *stride);
}
println!();
}
}
/// A specialised type for reference-counted `NAVideoBuffer`.
pub type NAVideoBufferRef<T> = NABufferRef<NAVideoBuffer<T>>;
/// Decoded audio frame.
///
/// NihAV frames are stored in native type (8/16/32-bit elements) inside a single buffer.
/// In case of planar audio samples for each channel are stored sequentially and can be accessed in the buffer starting at corresponding channel offset.
#[derive(Clone)]
pub struct NAAudioBuffer<T> {
info: NAAudioInfo,
data: NABufferRef<Vec<T>>,
offs: Vec<usize>,
stride: usize,
step: usize,
chmap: NAChannelMap,
len: usize,
}
impl<T: Clone> NAAudioBuffer<T> {
/// Returns the start position of requested channel data.
pub fn get_offset(&self, idx: usize) -> usize {
if idx >= self.offs.len() { 0 }
else { self.offs[idx] }
}
/// Returns the distance between the start of one channel and the next one.
pub fn get_stride(&self) -> usize { self.stride }
/// Returns the distance between the samples in one channel.
pub fn get_step(&self) -> usize { self.step }
/// Returns audio format information.
pub fn get_info(&self) -> NAAudioInfo { self.info }
/// Returns channel map.
pub fn get_chmap(&self) -> &NAChannelMap { &self.chmap }
/// Returns an immutable reference to the data.
pub fn get_data(&self) -> &Vec<T> { self.data.as_ref() }
/// Returns reference to the data.
pub fn get_data_ref(&self) -> NABufferRef<Vec<T>> { self.data.clone() }
/// Returns a mutable reference to the data.
pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
/// Clones current `NAAudioBuffer` into a new one.
pub fn copy_buffer(&mut self) -> Self {
let mut data: Vec<T> = Vec::with_capacity(self.data.len());
data.clone_from(self.data.as_ref());
let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len());
offs.clone_from(&self.offs);
NAAudioBuffer { info: self.info, data: NABufferRef::new(data), offs, chmap: self.get_chmap().clone(), len: self.len, stride: self.stride, step: self.step }
}
/// Return the length of frame in samples.
pub fn get_length(&self) -> usize { self.len }
/// Truncates buffer length if possible.
///
/// In case when new length is larger than old length nothing is done.
pub fn truncate(&mut self, new_len: usize) {
self.len = self.len.min(new_len);
}
fn print_contents(&self, datatype: &str) {
println!("Audio buffer with {} data, stride {}, step {}", datatype, self.stride, self.step);
println!(" format {}", self.info);
println!(" channel map {}", self.chmap);
print!(" offsets:");
for off in self.offs.iter() {
print!(" {}", *off);
}
println!();
}
}
impl NAAudioBuffer<u8> {
/// Constructs a new `NAAudioBuffer` instance.
pub fn new_from_buf(info: NAAudioInfo, data: NABufferRef<Vec<u8>>, chmap: NAChannelMap) -> Self {
let len = data.len();
NAAudioBuffer { info, data, chmap, offs: Vec::new(), len, stride: 0, step: 0 }
}
}
/// A list of possible decoded frame types.
#[derive(Clone)]
pub enum NABufferType {
/// 8-bit video buffer.
Video (NAVideoBufferRef<u8>),
/// 16-bit video buffer (i.e. every component or packed pixel fits into 16 bits).
Video16 (NAVideoBufferRef<u16>),
/// 32-bit video buffer (i.e. every component or packed pixel fits into 32 bits).
Video32 (NAVideoBufferRef<u32>),
/// Packed video buffer.
VideoPacked(NAVideoBufferRef<u8>),
/// Audio buffer with 8-bit unsigned integer audio.
AudioU8 (NAAudioBuffer<u8>),
/// Audio buffer with 16-bit signed integer audio.
AudioI16 (NAAudioBuffer<i16>),
/// Audio buffer with 32-bit signed integer audio.
AudioI32 (NAAudioBuffer<i32>),
/// Audio buffer with 32-bit floating point audio.
AudioF32 (NAAudioBuffer<f32>),
/// Packed audio buffer.
AudioPacked(NAAudioBuffer<u8>),
/// Buffer with generic data (e.g. subtitles).
Data (NABufferRef<Vec<u8>>),
/// No data present.
None,
}
impl NABufferType {
/// Returns the offset to the requested component or channel.
pub fn get_offset(&self, idx: usize) -> usize {
match *self {
NABufferType::Video(ref vb) => vb.get_offset(idx),
NABufferType::Video16(ref vb) => vb.get_offset(idx),
NABufferType::Video32(ref vb) => vb.get_offset(idx),
NABufferType::VideoPacked(ref vb) => vb.get_offset(idx),
NABufferType::AudioU8(ref ab) => ab.get_offset(idx),
NABufferType::AudioI16(ref ab) => ab.get_offset(idx),
NABufferType::AudioI32(ref ab) => ab.get_offset(idx),
NABufferType::AudioF32(ref ab) => ab.get_offset(idx),
NABufferType::AudioPacked(ref ab) => ab.get_offset(idx),
_ => 0,
}
}
/// Returns information for video frames.
pub fn get_video_info(&self) -> Option<NAVideoInfo> {
match *self {
NABufferType::Video(ref vb) => Some(vb.get_info()),
NABufferType::Video16(ref vb) => Some(vb.get_info()),
NABufferType::Video32(ref vb) => Some(vb.get_info()),
NABufferType::VideoPacked(ref vb) => Some(vb.get_info()),
_ => None,
}
}
/// Returns reference to 8-bit (or packed) video buffer.
pub fn get_vbuf(&self) -> Option<NAVideoBufferRef<u8>> {
match *self {
NABufferType::Video(ref vb) => Some(vb.clone()),
NABufferType::VideoPacked(ref vb) => Some(vb.clone()),
_ => None,
}
}
/// Returns reference to 16-bit video buffer.
pub fn get_vbuf16(&self) -> Option<NAVideoBufferRef<u16>> {
match *self {
NABufferType::Video16(ref vb) => Some(vb.clone()),
_ => None,
}
}
/// Returns reference to 32-bit video buffer.
pub fn get_vbuf32(&self) -> Option<NAVideoBufferRef<u32>> {
match *self {
NABufferType::Video32(ref vb) => Some(vb.clone()),
_ => None,
}
}
/// Returns information for audio frames.
pub fn get_audio_info(&self) -> Option<NAAudioInfo> {
match *self {
NABufferType::AudioU8(ref ab) => Some(ab.get_info()),
NABufferType::AudioI16(ref ab) => Some(ab.get_info()),
NABufferType::AudioI32(ref ab) => Some(ab.get_info()),
NABufferType::AudioF32(ref ab) => Some(ab.get_info()),
NABufferType::AudioPacked(ref ab) => Some(ab.get_info()),
_ => None,
}
}
/// Returns audio channel map.
pub fn get_chmap(&self) -> Option<&NAChannelMap> {
match *self {
NABufferType::AudioU8(ref ab) => Some(ab.get_chmap()),
NABufferType::AudioI16(ref ab) => Some(ab.get_chmap()),
NABufferType::AudioI32(ref ab) => Some(ab.get_chmap()),
NABufferType::AudioF32(ref ab) => Some(ab.get_chmap()),
NABufferType::AudioPacked(ref ab) => Some(ab.get_chmap()),
_ => None,
}
}
/// Returns audio frame duration in samples.
pub fn get_audio_length(&self) -> usize {
match *self {
NABufferType::AudioU8(ref ab) => ab.get_length(),
NABufferType::AudioI16(ref ab) => ab.get_length(),
NABufferType::AudioI32(ref ab) => ab.get_length(),
NABufferType::AudioF32(ref ab) => ab.get_length(),
NABufferType::AudioPacked(ref ab) => ab.get_length(),
_ => 0,
}
}
/// Returns the distance between starts of two channels.
pub fn get_audio_stride(&self) -> usize {
match *self {
NABufferType::AudioU8(ref ab) => ab.get_stride(),
NABufferType::AudioI16(ref ab) => ab.get_stride(),
NABufferType::AudioI32(ref ab) => ab.get_stride(),
NABufferType::AudioF32(ref ab) => ab.get_stride(),
NABufferType::AudioPacked(ref ab) => ab.get_stride(),
_ => 0,
}
}
/// Returns the distance between two samples in one channel.
pub fn get_audio_step(&self) -> usize {
match *self {
NABufferType::AudioU8(ref ab) => ab.get_step(),
NABufferType::AudioI16(ref ab) => ab.get_step(),
NABufferType::AudioI32(ref ab) => ab.get_step(),
NABufferType::AudioF32(ref ab) => ab.get_step(),
NABufferType::AudioPacked(ref ab) => ab.get_step(),
_ => 0,
}
}
/// Returns reference to 8-bit (or packed) audio buffer.
pub fn get_abuf_u8(&self) -> Option<NAAudioBuffer<u8>> {
match *self {
NABufferType::AudioU8(ref ab) => Some(ab.clone()),
NABufferType::AudioPacked(ref ab) => Some(ab.clone()),
_ => None,
}
}
/// Returns reference to 16-bit audio buffer.
pub fn get_abuf_i16(&self) -> Option<NAAudioBuffer<i16>> {
match *self {
NABufferType::AudioI16(ref ab) => Some(ab.clone()),
_ => None,
}
}
/// Returns reference to 32-bit integer audio buffer.
pub fn get_abuf_i32(&self) -> Option<NAAudioBuffer<i32>> {
match *self {
NABufferType::AudioI32(ref ab) => Some(ab.clone()),
_ => None,
}
}
/// Returns reference to 32-bit floating point audio buffer.
pub fn get_abuf_f32(&self) -> Option<NAAudioBuffer<f32>> {
match *self {
NABufferType::AudioF32(ref ab) => Some(ab.clone()),
_ => None,
}
}
/// Prints internal buffer layout.
pub fn print_buffer_metadata(&self) {
match *self {
NABufferType::Video(ref buf) => buf.print_contents("8-bit"),
NABufferType::Video16(ref buf) => buf.print_contents("16-bit"),
NABufferType::Video32(ref buf) => buf.print_contents("32-bit"),
NABufferType::VideoPacked(ref buf) => buf.print_contents("packed"),
NABufferType::AudioU8(ref buf) => buf.print_contents("8-bit unsigned integer"),
NABufferType::AudioI16(ref buf) => buf.print_contents("16-bit integer"),
NABufferType::AudioI32(ref buf) => buf.print_contents("32-bit integer"),
NABufferType::AudioF32(ref buf) => buf.print_contents("32-bit float"),
NABufferType::AudioPacked(ref buf) => buf.print_contents("packed"),
NABufferType::Data(ref buf) => { println!("Data buffer, len = {}", buf.len()); },
NABufferType::None => { println!("No buffer"); },
};
}
}
const NA_SIMPLE_VFRAME_COMPONENTS: usize = 4;
/// Simplified decoded frame data.
pub struct NASimpleVideoFrame<'a, T: Copy> {
/// Widths of each picture component.
pub width: [usize; NA_SIMPLE_VFRAME_COMPONENTS],
/// Heights of each picture component.
pub height: [usize; NA_SIMPLE_VFRAME_COMPONENTS],
/// Orientation (upside-down or downside-up) flag.
pub flip: bool,
/// Strides for each component.
pub stride: [usize; NA_SIMPLE_VFRAME_COMPONENTS],
/// Start of each component.
pub offset: [usize; NA_SIMPLE_VFRAME_COMPONENTS],
/// Number of components.
pub components: usize,
/// Pointer to the picture pixel data.
pub data: &'a mut [T],
}
impl<'a, T:Copy> NASimpleVideoFrame<'a, T> {
/// Constructs a new instance of `NASimpleVideoFrame` from `NAVideoBuffer`.
pub fn from_video_buf(vbuf: &'a mut NAVideoBuffer<T>) -> Option<Self> {
let vinfo = vbuf.get_info();
let components = vinfo.format.components as usize;
if components > NA_SIMPLE_VFRAME_COMPONENTS {
return None;
}
let mut w: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
let mut h: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
let mut s: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
let mut o: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
for comp in 0..components {
let (width, height) = vbuf.get_dimensions(comp);
w[comp] = width;
h[comp] = height;
s[comp] = vbuf.get_stride(comp);
o[comp] = vbuf.get_offset(comp);
}
let flip = vinfo.flipped;
Some(NASimpleVideoFrame {
width: w,
height: h,
flip,
stride: s,
offset: o,
components,
data: vbuf.data.as_mut_slice(),
})
}
}
/// A list of possible frame allocator errors.
#[derive(Debug,Clone,Copy,PartialEq)]
pub enum AllocatorError {
/// Requested picture dimensions are too large.
TooLargeDimensions,
/// Invalid input format.
FormatError,
}
/// Constructs a new video buffer with requested format.
///
/// `align` is power of two alignment for image. E.g. the value of 5 means that frame dimensions will be padded to be multiple of 32.
pub fn alloc_video_buffer(vinfo: NAVideoInfo, align: u8) -> Result<NABufferType, AllocatorError> {
let fmt = &vinfo.format;
let mut new_size: usize = 0;
let mut offs: Vec<usize> = Vec::new();
let mut strides: Vec<usize> = Vec::new();
for i in 0..fmt.get_num_comp() {
if fmt.get_chromaton(i) == None { return Err(AllocatorError::FormatError); }
}
let align_mod = ((1 << align) as usize) - 1;
let width = ((vinfo.width as usize) + align_mod) & !align_mod;
let height = ((vinfo.height as usize) + align_mod) & !align_mod;
let mut max_depth = 0;
let mut all_packed = true;
let mut all_bytealigned = true;
for i in 0..fmt.get_num_comp() {
let ochr = fmt.get_chromaton(i);
if ochr.is_none() { continue; }
let chr = ochr.unwrap();
if !chr.is_packed() {
all_packed = false;
} else if ((chr.get_shift() + chr.get_depth()) & 7) != 0 {
all_bytealigned = false;
}
max_depth = max(max_depth, chr.get_depth());
}
let unfit_elem_size = match fmt.get_elem_size() {
2 | 4 => false,
_ => true,
};
//todo semi-packed like NV12
if fmt.is_paletted() {
//todo various-sized palettes?
let stride = vinfo.get_format().get_chromaton(0).unwrap().get_linesize(width);
let pic_sz = stride.checked_mul(height);
if pic_sz == None { return Err(AllocatorError::TooLargeDimensions); }
let pal_size = 256 * (fmt.get_elem_size() as usize);
let new_size = pic_sz.unwrap().checked_add(pal_size);
if new_size == None { return Err(AllocatorError::TooLargeDimensions); }
offs.push(0);
offs.push(stride * height);
strides.push(stride);
let data: Vec<u8> = vec![0; new_size.unwrap()];
let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video(buf.into_ref()))
} else if !all_packed {
for i in 0..fmt.get_num_comp() {
let ochr = fmt.get_chromaton(i);
if ochr.is_none() { continue; }
let chr = ochr.unwrap();
offs.push(new_size as usize);
let stride = chr.get_linesize(width);
let cur_h = chr.get_height(height);
let cur_sz = stride.checked_mul(cur_h);
if cur_sz == None { return Err(AllocatorError::TooLargeDimensions); }
let new_sz = new_size.checked_add(cur_sz.unwrap());
if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
new_size = new_sz.unwrap();
strides.push(stride);
}
if max_depth <= 8 {
let data: Vec<u8> = vec![0; new_size];
let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video(buf.into_ref()))
} else if max_depth <= 16 {
let data: Vec<u16> = vec![0; new_size];
let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video16(buf.into_ref()))
} else {
let data: Vec<u32> = vec![0; new_size];
let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video32(buf.into_ref()))
}
} else if all_bytealigned || unfit_elem_size {
let elem_sz = fmt.get_elem_size();
let line_sz = width.checked_mul(elem_sz as usize);
if line_sz == None { return Err(AllocatorError::TooLargeDimensions); }
let new_sz = line_sz.unwrap().checked_mul(height);
if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
new_size = new_sz.unwrap();
let data: Vec<u8> = vec![0; new_size];
strides.push(line_sz.unwrap());
let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::VideoPacked(buf.into_ref()))
} else {
let elem_sz = fmt.get_elem_size();
let new_sz = width.checked_mul(height);
if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
new_size = new_sz.unwrap();
match elem_sz {
2 => {
let data: Vec<u16> = vec![0; new_size];
strides.push(width);
let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video16(buf.into_ref()))
},
4 => {
let data: Vec<u32> = vec![0; new_size];
strides.push(width);
let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides };
Ok(NABufferType::Video32(buf.into_ref()))
},
_ => unreachable!(),
}
}
}
/// Constructs a new audio buffer for the requested format and length.
#[allow(clippy::collapsible_if)]
pub fn alloc_audio_buffer(ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<NABufferType, AllocatorError> {
let mut offs: Vec<usize> = Vec::new();
if ainfo.format.is_planar() || ((ainfo.format.get_bits() % 8) == 0) {
let len = nsamples.checked_mul(ainfo.channels as usize);
if len == None { return Err(AllocatorError::TooLargeDimensions); }
let length = len.unwrap();
let stride;
let step;
if ainfo.format.is_planar() {
stride = nsamples;
step = 1;
for i in 0..ainfo.channels {
offs.push((i as usize) * stride);
}
} else {
stride = 1;
step = ainfo.channels as usize;
for i in 0..ainfo.channels {
offs.push(i as usize);
}
}
if ainfo.format.is_float() {
if ainfo.format.get_bits() == 32 {
let data: Vec<f32> = vec![0.0; length];
let buf: NAAudioBuffer<f32> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step };
Ok(NABufferType::AudioF32(buf))
} else {
Err(AllocatorError::TooLargeDimensions)
}
} else {
if ainfo.format.get_bits() == 8 && !ainfo.format.is_signed() {
let data: Vec<u8> = vec![0; length];
let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step };
Ok(NABufferType::AudioU8(buf))
} else if ainfo.format.get_bits() == 16 && ainfo.format.is_signed() {
let data: Vec<i16> = vec![0; length];
let buf: NAAudioBuffer<i16> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step };
Ok(NABufferType::AudioI16(buf))
} else if ainfo.format.get_bits() == 32 && ainfo.format.is_signed() {
let data: Vec<i32> = vec![0; length];
let buf: NAAudioBuffer<i32> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step };
Ok(NABufferType::AudioI32(buf))
} else {
Err(AllocatorError::TooLargeDimensions)
}
}
} else {
let len = nsamples.checked_mul(ainfo.channels as usize);
if len == None { return Err(AllocatorError::TooLargeDimensions); }
let length = ainfo.format.get_audio_size(len.unwrap() as u64);
let data: Vec<u8> = vec![0; length];
let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride: 0, step: 0 };
Ok(NABufferType::AudioPacked(buf))
}
}
/// Constructs a new buffer for generic data.
pub fn alloc_data_buffer(size: usize) -> Result<NABufferType, AllocatorError> {
let data: Vec<u8> = vec![0; size];
let buf: NABufferRef<Vec<u8>> = NABufferRef::new(data);
Ok(NABufferType::Data(buf))
}
/// Creates a clone of current buffer.
pub fn copy_buffer(buf: NABufferType) -> NABufferType {
buf.clone()
}
/// Video frame pool.
///
/// This structure allows codec to effectively reuse old frames instead of allocating and de-allocating frames every time.
/// Caller can also reserve some frames for its own purposes e.g. display queue.
pub struct NAVideoBufferPool<T:Copy> {
pool: Vec<NAVideoBufferRef<T>>,
max_len: usize,
add_len: usize,
}
impl<T:Copy> NAVideoBufferPool<T> {
/// Constructs a new `NAVideoBufferPool` instance.
pub fn new(max_len: usize) -> Self {
Self {
pool: Vec::with_capacity(max_len),
max_len,
add_len: 0,
}
}
/// Sets the number of buffers reserved for the user.
pub fn set_dec_bufs(&mut self, add_len: usize) {
self.add_len = add_len;
}
/// Returns an unused buffer from the pool.
pub fn get_free(&mut self) -> Option<NAVideoBufferRef<T>> {
for e in self.pool.iter() {
if e.get_num_refs() == 1 {
return Some(e.clone());
}
}
None
}
/// Clones provided frame data into a free pool frame.
pub fn get_copy(&mut self, rbuf: &NAVideoBufferRef<T>) -> Option<NAVideoBufferRef<T>> {
let mut dbuf = self.get_free()?;
dbuf.data.copy_from_slice(&rbuf.data);
Some(dbuf)
}
/// Clears the pool from all frames.
pub fn reset(&mut self) {
self.pool.truncate(0);
}
}
impl NAVideoBufferPool<u8> {
/// Allocates the target amount of video frames using [`alloc_video_buffer`].
///
/// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html
pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> {
let nbufs = self.max_len + self.add_len - self.pool.len();
for _ in 0..nbufs {
let vbuf = alloc_video_buffer(vinfo, align)?;
if let NABufferType::Video(buf) = vbuf {
self.pool.push(buf);
} else if let NABufferType::VideoPacked(buf) = vbuf {
self.pool.push(buf);
} else {
return Err(AllocatorError::FormatError);
}
}
Ok(())
}
}
impl NAVideoBufferPool<u16> {
/// Allocates the target amount of video frames using [`alloc_video_buffer`].
///
/// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html
pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> {
let nbufs = self.max_len + self.add_len - self.pool.len();
for _ in 0..nbufs {
let vbuf = alloc_video_buffer(vinfo, align)?;
if let NABufferType::Video16(buf) = vbuf {
self.pool.push(buf);
} else {
return Err(AllocatorError::FormatError);
}
}
Ok(())
}
}
impl NAVideoBufferPool<u32> {
/// Allocates the target amount of video frames using [`alloc_video_buffer`].
///
/// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html
pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> {
let nbufs = self.max_len + self.add_len - self.pool.len();
for _ in 0..nbufs {
let vbuf = alloc_video_buffer(vinfo, align)?;
if let NABufferType::Video32(buf) = vbuf {
self.pool.push(buf);
} else {
return Err(AllocatorError::FormatError);
}
}
Ok(())
}
}
/// Information about codec contained in a stream.
#[allow(dead_code)]
#[derive(Clone)]
pub struct NACodecInfo {
name: &'static str,
properties: NACodecTypeInfo,
extradata: Option<Arc<Vec<u8>>>,
}
/// A specialised type for reference-counted `NACodecInfo`.
pub type NACodecInfoRef = Arc<NACodecInfo>;
impl NACodecInfo {
/// Constructs a new instance of `NACodecInfo`.
pub fn new(name: &'static str, p: NACodecTypeInfo, edata: Option<Vec<u8>>) -> Self {
let extradata = match edata {
None => None,
Some(vec) => Some(Arc::new(vec)),
};
NACodecInfo { name, properties: p, extradata }
}
/// Constructs a new reference-counted instance of `NACodecInfo`.
pub fn new_ref(name: &'static str, p: NACodecTypeInfo, edata: Option<Arc<Vec<u8>>>) -> Self {
NACodecInfo { name, properties: p, extradata: edata }
}
/// Converts current instance into a reference-counted one.
pub fn into_ref(self) -> NACodecInfoRef { Arc::new(self) }
/// Returns codec information.
pub fn get_properties(&self) -> NACodecTypeInfo { self.properties }
/// Returns additional initialisation data required by the codec.
pub fn get_extradata(&self) -> Option<Arc<Vec<u8>>> {
if let Some(ref vec) = self.extradata { return Some(vec.clone()); }
None
}
/// Returns codec name.
pub fn get_name(&self) -> &'static str { self.name }
/// Reports whether it is a video codec.
pub fn is_video(&self) -> bool {
if let NACodecTypeInfo::Video(_) = self.properties { return true; }
false
}
/// Reports whether it is an audio codec.
pub fn is_audio(&self) -> bool {
if let NACodecTypeInfo::Audio(_) = self.properties { return true; }
false
}
/// Constructs a new empty reference-counted instance of `NACodecInfo`.
pub fn new_dummy() -> Arc<Self> {
Arc::new(DUMMY_CODEC_INFO)
}
/// Updates codec infomation.
pub fn replace_info(&self, p: NACodecTypeInfo) -> Arc<Self> {
Arc::new(NACodecInfo { name: self.name, properties: p, extradata: self.extradata.clone() })
}
}
impl Default for NACodecInfo {
fn default() -> Self { DUMMY_CODEC_INFO }
}
impl fmt::Display for NACodecInfo {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let edata = match self.extradata.clone() {
None => "no extradata".to_string(),
Some(v) => format!("{} byte(s) of extradata", v.len()),
};
write!(f, "{}: {} {}", self.name, self.properties, edata)
}
}
/// Default empty codec information.
pub const DUMMY_CODEC_INFO: NACodecInfo = NACodecInfo {
name: "none",
properties: NACodecTypeInfo::None,
extradata: None };
/// A list of recognized frame types.
#[derive(Debug,Clone,Copy,PartialEq)]
#[allow(dead_code)]
pub enum FrameType {
/// Intra frame type.
I,
/// Inter frame type.
P,
/// Bidirectionally predicted frame.
B,
/// Skip frame.
///
/// When such frame is encountered then last frame should be used again if it is needed.
Skip,
/// Some other frame type.
Other,
}
impl fmt::Display for FrameType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
FrameType::I => write!(f, "I"),
FrameType::P => write!(f, "P"),
FrameType::B => write!(f, "B"),
FrameType::Skip => write!(f, "skip"),
FrameType::Other => write!(f, "x"),
}
}
}
/// Timestamp information.
#[derive(Debug,Clone,Copy)]
pub struct NATimeInfo {
/// Presentation timestamp.
pub pts: Option<u64>,
/// Decode timestamp.
pub dts: Option<u64>,
/// Duration (in timebase units).
pub duration: Option<u64>,
/// Timebase numerator.
pub tb_num: u32,
/// Timebase denominator.
pub tb_den: u32,
}
impl NATimeInfo {
/// Constructs a new `NATimeInfo` instance.
pub fn new(pts: Option<u64>, dts: Option<u64>, duration: Option<u64>, tb_num: u32, tb_den: u32) -> Self {
NATimeInfo { pts, dts, duration, tb_num, tb_den }
}
/// Returns presentation timestamp.
pub fn get_pts(&self) -> Option<u64> { self.pts }
/// Returns decoding timestamp.
pub fn get_dts(&self) -> Option<u64> { self.dts }
/// Returns duration.
pub fn get_duration(&self) -> Option<u64> { self.duration }
/// Sets new presentation timestamp.
pub fn set_pts(&mut self, pts: Option<u64>) { self.pts = pts; }
/// Sets new decoding timestamp.
pub fn set_dts(&mut self, dts: Option<u64>) { self.dts = dts; }
/// Sets new duration.
pub fn set_duration(&mut self, dur: Option<u64>) { self.duration = dur; }
/// Converts time in given scale into timestamp in given base.
pub fn time_to_ts(time: u64, base: u64, tb_num: u32, tb_den: u32) -> u64 {
let tb_num = u64::from(tb_num);
let tb_den = u64::from(tb_den);
let tmp = time.checked_mul(tb_den);
if let Some(tmp) = tmp {
tmp / base / tb_num
} else {
if tb_num < base {
let coarse = time / tb_num;
if let Some(tmp) = coarse.checked_mul(tb_den) {
tmp / base
} else {
(coarse / base) * tb_den
}
} else {
let coarse = time / base;
if let Some(tmp) = coarse.checked_mul(tb_den) {
tmp / tb_num
} else {
(coarse / tb_num) * tb_den
}
}
}
}
/// Converts timestamp in given base into time in given scale.
pub fn ts_to_time(ts: u64, base: u64, tb_num: u32, tb_den: u32) -> u64 {
let tb_num = u64::from(tb_num);
let tb_den = u64::from(tb_den);
let tmp = ts.checked_mul(base);
if let Some(tmp) = tmp {
let tmp2 = tmp.checked_mul(tb_num);
if let Some(tmp2) = tmp2 {
tmp2 / tb_den
} else {
(tmp / tb_den) * tb_num
}
} else {
let tmp = ts.checked_mul(tb_num);
if let Some(tmp) = tmp {
(tmp / tb_den) * base
} else {
(ts / tb_den) * base * tb_num
}
}
}
fn get_cur_ts(&self) -> u64 { self.pts.unwrap_or_else(|| self.dts.unwrap_or(0)) }
fn get_cur_millis(&self) -> u64 {
let ts = self.get_cur_ts();
Self::ts_to_time(ts, 1000, self.tb_num, self.tb_den)
}
/// Checks whether the current time information is earler than provided reference time.
pub fn less_than(&self, time: NATimePoint) -> bool {
if self.pts.is_none() && self.dts.is_none() {
return true;
}
match time {
NATimePoint::PTS(rpts) => self.get_cur_ts() < rpts,
NATimePoint::Milliseconds(ms) => self.get_cur_millis() < ms,
NATimePoint::None => false,
}
}
/// Checks whether the current time information is the same as provided reference time.
pub fn equal(&self, time: NATimePoint) -> bool {
if self.pts.is_none() && self.dts.is_none() {
return time == NATimePoint::None;
}
match time {
NATimePoint::PTS(rpts) => self.get_cur_ts() == rpts,
NATimePoint::Milliseconds(ms) => self.get_cur_millis() == ms,
NATimePoint::None => false,
}
}
}
/// Time information for specifying durations or seek positions.
#[derive(Clone,Copy,Debug,PartialEq)]
pub enum NATimePoint {
/// Time in milliseconds.
Milliseconds(u64),
/// Stream timestamp.
PTS(u64),
/// No time information present.
None,
}
impl Default for NATimePoint {
fn default() -> Self {
NATimePoint::None
}
}
impl fmt::Display for NATimePoint {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
NATimePoint::Milliseconds(millis) => {
let tot_s = millis / 1000;
let ms = millis % 1000;
if tot_s < 60 {
if ms != 0 {
return write!(f, "{}.{:03}", tot_s, ms);
} else {
return write!(f, "{}", tot_s);
}
}
let tot_m = tot_s / 60;
let s = tot_s % 60;
if tot_m < 60 {
if ms != 0 {
return write!(f, "{}:{:02}.{:03}", tot_m, s, ms);
} else {
return write!(f, "{}:{:02}", tot_m, s);
}
}
let h = tot_m / 60;
let m = tot_m % 60;
if ms != 0 {
write!(f, "{}:{:02}:{:02}.{:03}", h, m, s, ms)
} else {
write!(f, "{}:{:02}:{:02}", h, m, s)
}
},
NATimePoint::PTS(pts) => {
write!(f, "{}pts", pts)
},
NATimePoint::None => {
write!(f, "none")
},
}
}
}
impl FromStr for NATimePoint {
type Err = FormatParseError;
/// Parses the string into time information.
///
/// Accepted formats are `<u64>pts`, `<u64>ms` or `[hh:][mm:]ss[.ms]`.
fn from_str(s: &str) -> Result<Self, Self::Err> {
if s.is_empty() {
return Err(FormatParseError {});
}
if !s.ends_with("pts") {
if s.ends_with("ms") {
let str_b = s.as_bytes();
let num = std::str::from_utf8(&str_b[..str_b.len() - 2]).unwrap();
let ret = num.parse::<u64>();
if let Ok(val) = ret {
return Ok(NATimePoint::Milliseconds(val));
} else {
return Err(FormatParseError {});
}
}
let mut parts = s.split(':');
let mut hrs = None;
let mut mins = None;
let mut secs = parts.next();
if let Some(part) = parts.next() {
std::mem::swap(&mut mins, &mut secs);
secs = Some(part);
}
if let Some(part) = parts.next() {
std::mem::swap(&mut hrs, &mut mins);
std::mem::swap(&mut mins, &mut secs);
secs = Some(part);
}
if parts.next().is_some() {
return Err(FormatParseError {});
}
let hours = if let Some(val) = hrs {
let ret = val.parse::<u64>();
if ret.is_err() { return Err(FormatParseError {}); }
let val = ret.unwrap();
if val > 1000 { return Err(FormatParseError {}); }
val
} else { 0 };
let minutes = if let Some(val) = mins {
let ret = val.parse::<u64>();
if ret.is_err() { return Err(FormatParseError {}); }
let val = ret.unwrap();
if val >= 60 { return Err(FormatParseError {}); }
val
} else { 0 };
let (seconds, millis) = if let Some(val) = secs {
let mut parts = val.split('.');
let ret = parts.next().unwrap().parse::<u64>();
if ret.is_err() { return Err(FormatParseError {}); }
let seconds = ret.unwrap();
if mins.is_some() && seconds >= 60 { return Err(FormatParseError {}); }
let millis = if let Some(val) = parts.next() {
let mut mval = 0;
let mut base = 0;
for ch in val.chars() {
if ch >= '0' && ch <= '9' {
mval = mval * 10 + u64::from((ch as u8) - b'0');
base += 1;
if base > 3 { break; }
} else {
return Err(FormatParseError {});
}
}
while base < 3 {
mval *= 10;
base += 1;
}
mval
} else { 0 };
(seconds, millis)
} else { unreachable!(); };
let tot_secs = hours * 60 * 60 + minutes * 60 + seconds;
Ok(NATimePoint::Milliseconds(tot_secs * 1000 + millis))
} else {
let str_b = s.as_bytes();
let num = std::str::from_utf8(&str_b[..str_b.len() - 3]).unwrap();
let ret = num.parse::<u64>();
if let Ok(val) = ret {
Ok(NATimePoint::PTS(val))
} else {
Err(FormatParseError {})
}
}
}
}
/// Decoded frame information.
#[allow(dead_code)]
#[derive(Clone)]
pub struct NAFrame {
/// Frame timestamp.
pub ts: NATimeInfo,
/// Frame ID.
pub id: i64,
buffer: NABufferType,
info: NACodecInfoRef,
/// Frame type.
pub frame_type: FrameType,
/// Keyframe flag.
pub key: bool,
// options: HashMap<String, NAValue>,
}
/// A specialised type for reference-counted `NAFrame`.
pub type NAFrameRef = Arc<NAFrame>;
fn get_plane_size(info: &NAVideoInfo, idx: usize) -> (usize, usize) {
let chromaton = info.get_format().get_chromaton(idx);
if chromaton.is_none() { return (0, 0); }
let (hs, vs) = chromaton.unwrap().get_subsampling();
let w = (info.get_width() + ((1 << hs) - 1)) >> hs;
let h = (info.get_height() + ((1 << vs) - 1)) >> vs;
(w, h)
}
impl NAFrame {
/// Constructs a new `NAFrame` instance.
pub fn new(ts: NATimeInfo,
ftype: FrameType,
keyframe: bool,
info: NACodecInfoRef,
/*options: HashMap<String, NAValue>,*/
buffer: NABufferType) -> Self {
NAFrame { ts, id: 0, buffer, info, frame_type: ftype, key: keyframe/*, options*/ }
}
/// Returns frame format information.
pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
/// Returns frame type.
pub fn get_frame_type(&self) -> FrameType { self.frame_type }
/// Reports whether the frame is a keyframe.
pub fn is_keyframe(&self) -> bool { self.key }
/// Sets new frame type.
pub fn set_frame_type(&mut self, ftype: FrameType) { self.frame_type = ftype; }
/// Sets keyframe flag.
pub fn set_keyframe(&mut self, key: bool) { self.key = key; }
/// Returns frame timestamp.
pub fn get_time_information(&self) -> NATimeInfo { self.ts }
/// Returns frame presentation time.
pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
/// Returns frame decoding time.
pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
/// Returns picture ID.
pub fn get_id(&self) -> i64 { self.id }
/// Returns frame display duration.
pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
/// Sets new presentation timestamp.
pub fn set_pts(&mut self, pts: Option<u64>) { self.ts.set_pts(pts); }
/// Sets new decoding timestamp.
pub fn set_dts(&mut self, dts: Option<u64>) { self.ts.set_dts(dts); }
/// Sets new picture ID.
pub fn set_id(&mut self, id: i64) { self.id = id; }
/// Sets new duration.
pub fn set_duration(&mut self, dur: Option<u64>) { self.ts.set_duration(dur); }
/// Returns a reference to the frame data.
pub fn get_buffer(&self) -> NABufferType { self.buffer.clone() }
/// Converts current instance into a reference-counted one.
pub fn into_ref(self) -> NAFrameRef { Arc::new(self) }
/// Creates new frame with metadata from `NAPacket`.
pub fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame {
NAFrame::new(pkt.ts, FrameType::Other, pkt.keyframe, info, /*HashMap::new(),*/ buf)
}
}
impl fmt::Display for NAFrame {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut ostr = format!("frame type {}", self.frame_type);
if let Some(pts) = self.ts.pts { ostr = format!("{} pts {}", ostr, pts); }
if let Some(dts) = self.ts.dts { ostr = format!("{} dts {}", ostr, dts); }
if let Some(dur) = self.ts.duration { ostr = format!("{} duration {}", ostr, dur); }
if self.key { ostr = format!("{} kf", ostr); }
write!(f, "[{}]", ostr)
}
}
/// A list of possible stream types.
#[derive(Debug,Clone,Copy,PartialEq)]
#[allow(dead_code)]
pub enum StreamType {
/// Video stream.
Video,
/// Audio stream.
Audio,
/// Subtitles.
Subtitles,
/// Any data stream (or might be an unrecognized audio/video stream).
Data,
/// Nonexistent stream.
None,
}
impl fmt::Display for StreamType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
StreamType::Video => write!(f, "Video"),
StreamType::Audio => write!(f, "Audio"),
StreamType::Subtitles => write!(f, "Subtitles"),
StreamType::Data => write!(f, "Data"),
StreamType::None => write!(f, "-"),
}
}
}
/// Stream data.
#[allow(dead_code)]
#[derive(Clone)]
pub struct NAStream {
media_type: StreamType,
/// Stream ID.
pub id: u32,
num: usize,
info: NACodecInfoRef,
/// Timebase numerator.
pub tb_num: u32,
/// Timebase denominator.
pub tb_den: u32,
/// Duration in timebase units (zero if not available).
pub duration: u64,
}
/// A specialised reference-counted `NAStream` type.
pub type NAStreamRef = Arc<NAStream>;
/// Downscales the timebase by its greatest common denominator.
pub fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) {
if tb_num == 0 { return (tb_num, tb_den); }
if (tb_den % tb_num) == 0 { return (1, tb_den / tb_num); }
let mut a = tb_num;
let mut b = tb_den;
while a != b {
if a > b { a -= b; }
else if b > a { b -= a; }
}
(tb_num / a, tb_den / a)
}
impl NAStream {
/// Constructs a new `NAStream` instance.
pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32, duration: u64) -> Self {
let (n, d) = reduce_timebase(tb_num, tb_den);
NAStream { media_type: mt, id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d, duration }
}
/// Returns stream id.
pub fn get_id(&self) -> u32 { self.id }
/// Returns stream type.
pub fn get_media_type(&self) -> StreamType { self.media_type }
/// Returns stream number assigned by demuxer.
pub fn get_num(&self) -> usize { self.num }
/// Sets stream number.
pub fn set_num(&mut self, num: usize) { self.num = num; }
/// Returns codec information.
pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
/// Returns stream timebase.
pub fn get_timebase(&self) -> (u32, u32) { (self.tb_num, self.tb_den) }
/// Sets new stream timebase.
pub fn set_timebase(&mut self, tb_num: u32, tb_den: u32) {
let (n, d) = reduce_timebase(tb_num, tb_den);
self.tb_num = n;
self.tb_den = d;
}
/// Returns stream duration.
pub fn get_duration(&self) -> usize { self.num }
/// Converts current instance into a reference-counted one.
pub fn into_ref(self) -> NAStreamRef { Arc::new(self) }
}
impl fmt::Display for NAStream {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "({}#{} @ {}/{} - {})", self.media_type, self.id, self.tb_num, self.tb_den, self.info.get_properties())
}
}
/// Side data that may accompany demuxed data.
#[derive(Clone)]
pub enum NASideData {
/// Palette information.
///
/// This side data contains a flag signalling that palette has changed since previous time and a reference to the current palette.
/// Palette is stored in 8-bit RGBA format.
Palette(bool, Arc<[u8; 1024]>),
/// Generic user data.
UserData(Arc<Vec<u8>>),
}
/// Packet with compressed data.
#[allow(dead_code)]
pub struct NAPacket {
stream: NAStreamRef,
/// Packet timestamp.
pub ts: NATimeInfo,
buffer: NABufferRef<Vec<u8>>,
/// Keyframe flag.
pub keyframe: bool,
// options: HashMap<String, NAValue<'a>>,
/// Packet side data (e.g. palette for paletted formats).
pub side_data: Vec<NASideData>,
}
impl NAPacket {
/// Constructs a new `NAPacket` instance.
pub fn new(str: NAStreamRef, ts: NATimeInfo, kf: bool, vec: Vec<u8>) -> Self {
// let mut vec: Vec<u8> = Vec::new();
// vec.resize(size, 0);
NAPacket { stream: str, ts, keyframe: kf, buffer: NABufferRef::new(vec), side_data: Vec::new() }
}
/// Constructs a new `NAPacket` instance reusing a buffer reference.
pub fn new_from_refbuf(str: NAStreamRef, ts: NATimeInfo, kf: bool, buffer: NABufferRef<Vec<u8>>) -> Self {
NAPacket { stream: str, ts, keyframe: kf, buffer, side_data: Vec::new() }
}
/// Returns information about the stream packet belongs to.
pub fn get_stream(&self) -> NAStreamRef { self.stream.clone() }
/// Returns packet timestamp.
pub fn get_time_information(&self) -> NATimeInfo { self.ts }
/// Returns packet presentation timestamp.
pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
/// Returns packet decoding timestamp.
pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
/// Returns packet duration.
pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
/// Reports whether this is a keyframe packet.
pub fn is_keyframe(&self) -> bool { self.keyframe }
/// Returns a reference to packet data.
pub fn get_buffer(&self) -> NABufferRef<Vec<u8>> { self.buffer.clone() }
/// Adds side data for a packet.
pub fn add_side_data(&mut self, side_data: NASideData) { self.side_data.push(side_data); }
/// Assigns packet to a new stream.
pub fn reassign(&mut self, str: NAStreamRef, ts: NATimeInfo) {
self.stream = str;
self.ts = ts;
}
}
impl Drop for NAPacket {
fn drop(&mut self) {}
}
impl fmt::Display for NAPacket {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut ostr = format!("[pkt for {} size {}", self.stream, self.buffer.len());
if let Some(pts) = self.ts.pts { ostr = format!("{} pts {}", ostr, pts); }
if let Some(dts) = self.ts.dts { ostr = format!("{} dts {}", ostr, dts); }
if let Some(dur) = self.ts.duration { ostr = format!("{} duration {}", ostr, dur); }
if self.keyframe { ostr = format!("{} kf", ostr); }
ostr += "]";
write!(f, "{}", ostr)
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_time_parse() {
assert_eq!(NATimePoint::PTS(42).to_string(), "42pts");
assert_eq!(NATimePoint::Milliseconds(4242000).to_string(), "1:10:42");
assert_eq!(NATimePoint::Milliseconds(42424242).to_string(), "11:47:04.242");
let ret = NATimePoint::from_str("42pts");
assert_eq!(ret.unwrap(), NATimePoint::PTS(42));
let ret = NATimePoint::from_str("1:2:3");
assert_eq!(ret.unwrap(), NATimePoint::Milliseconds(3723000));
let ret = NATimePoint::from_str("1:2:3.42");
assert_eq!(ret.unwrap(), NATimePoint::Milliseconds(3723420));
}
}