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+# It is not intended for manual editing.
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+
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--- /dev/null
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+name = "avif-serialize"
+version = "0.8.1"
+authors = ["Kornel Lesiński <kornel@geekhood.net>"]
+include = [
+ "src/*.rs",
+ "Cargo.toml",
+ "README.md",
+ "LICENSE",
+]
+description = "Minimal writer for AVIF header structure (MPEG/HEIF/MIAF/ISO-BMFF)"
+homepage = "https://lib.rs/avif-serialize"
+readme = "README.md"
+keywords = [
+ "avif",
+ "heif",
+ "bmff",
+ "av1",
+ "mux",
+]
+categories = [
+ "multimedia::images",
+ "encoding",
+]
+license = "BSD-3-Clause"
+repository = "https://github.com/kornelski/avif-serialize"
+
+[dependencies.arrayvec]
+version = "0.7.2"
+
+[dev-dependencies.avif-parse]
+version = "1.0.0"
+
+[badges.maintenance]
+status = "passively-maintained"
--- /dev/null
+[package]
+name = "avif-serialize"
+version = "0.8.1"
+authors = ["Kornel Lesiński <kornel@geekhood.net>"]
+edition = "2021"
+license = "BSD-3-Clause"
+description = "Minimal writer for AVIF header structure (MPEG/HEIF/MIAF/ISO-BMFF)"
+readme = "README.md"
+categories = ["multimedia::images", "encoding"]
+keywords = ["avif", "heif", "bmff", "av1", "mux"]
+repository = "https://github.com/kornelski/avif-serialize"
+homepage = "https://lib.rs/avif-serialize"
+include = ["src/*.rs", "Cargo.toml", "README.md", "LICENSE"]
+
+[dependencies]
+arrayvec = "0.7.2"
+
+[dev-dependencies]
+mp4parse = { git = "https://github.com/mozilla/mp4parse-rust", rev = "c6ba5afd856c158d9cfc1a447165fcfaaf2b797c" }
+avif-parse = "1.0.0"
+
+[badges]
+maintenance = { status = "passively-maintained" }
--- /dev/null
+BSD 3-Clause License
+
+Copyright (c) 2020, Cloudflare, Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--- /dev/null
+# AVIF image serializer (muxer)
+
+Minimal writer for AVIF header structure. This is lean, safe-Rust alternative to [libavif](//lib.rs/libavif).
+It creates the jungle of MPEG/HEIF/MIAF/ISO-BMFF "boxes" as appropriate for AVIF files. Supports alpha channel embedding.
+
+Compatible with decoders in Chrome 85+, libavif v0.8.1, and Firefox 92.
+
+Together with [rav1e](//lib.rs/rav1e) it allows pure-Rust AVIF image encoding.
+
+## Requirements
+
+* [Latest stable](https://rustup.rs) version of Rust.
+
+## Usage
+
+1. Compress pixels using an AV1 encoder, such as [rav1e](//lib.rs/rav1e). [libaom](//lib.rs/libaom-sys) works too.
+
+2. Call `avif_serialize::serialize_to_vec(av1_data, None, width, height, 8)`
+
+See [cavif](https://github.com/kornelski/cavif-rs) for example usage.
+
--- /dev/null
+use crate::constants::ColorPrimaries;
+use crate::constants::MatrixCoefficients;
+use crate::constants::TransferCharacteristics;
+use crate::writer::Writer;
+use crate::writer::WriterBackend;
+use crate::writer::IO;
+use arrayvec::ArrayVec;
+use std::fmt;
+use std::io;
+use std::io::Write;
+
+pub trait MpegBox {
+ fn len(&self) -> usize;
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error>;
+}
+
+#[derive(Copy, Clone)]
+pub struct FourCC(pub [u8; 4]);
+
+impl fmt::Debug for FourCC {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match std::str::from_utf8(&self.0) {
+ Ok(s) => s.fmt(f),
+ Err(_) => self.0.fmt(f),
+ }
+ }
+}
+
+#[derive(Debug, Clone)]
+pub struct AvifFile<'data> {
+ pub ftyp: FtypBox,
+ pub meta: MetaBox,
+ pub mdat: MdatBox<'data>,
+}
+
+impl AvifFile<'_> {
+ /// Where the primary data starts inside the `mdat` box, for `iloc`'s offset
+ fn mdat_payload_start_offset(&self) -> u32 {
+ (self.ftyp.len() + self.meta.len()
+ + BASIC_BOX_SIZE) as u32 // mdat head
+ }
+
+ /// `iloc` is mostly unnecssary, high risk of out-of-buffer accesses in parsers that don't pay attention,
+ /// and also awkward to serialize, because its content depends on its own serialized byte size.
+ fn fix_iloc_positions(&mut self) {
+ let start_offset = self.mdat_payload_start_offset();
+ for iloc_item in self.meta.iloc.items.iter_mut() {
+ for ex in iloc_item.extents.iter_mut() {
+ let abs = match ex.offset {
+ IlocOffset::Relative(n) => n as u32 + start_offset,
+ IlocOffset::Absolute(_) => continue,
+ };
+ ex.offset = IlocOffset::Absolute(abs);
+ }
+ }
+ }
+
+ pub fn write<W: Write>(&mut self, mut out: W) -> io::Result<()> {
+ self.fix_iloc_positions();
+
+ let mut tmp = Vec::with_capacity(self.ftyp.len() + self.meta.len());
+ let mut w = Writer::new(&mut tmp);
+ let _ = self.ftyp.write(&mut w);
+ let _ = self.meta.write(&mut w);
+ drop(w);
+ out.write_all(&tmp)?;
+ drop(tmp);
+
+ let mut out = IO(out);
+ let mut w = Writer::new(&mut out);
+ self.mdat.write(&mut w)?;
+ Ok(())
+ }
+}
+
+const BASIC_BOX_SIZE: usize = 8;
+const FULL_BOX_SIZE: usize = BASIC_BOX_SIZE + 4;
+
+#[derive(Debug, Clone)]
+pub struct FtypBox {
+ pub major_brand: FourCC,
+ pub minor_version: u32,
+ pub compatible_brands: ArrayVec<FourCC, 2>,
+}
+
+/// File Type box (chunk)
+impl MpegBox for FtypBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE
+ + 4 // brand
+ + 4 // ver
+ + 4 * self.compatible_brands.len()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"ftyp")?;
+ b.push(&self.major_brand.0)?;
+ b.u32(self.minor_version)?;
+ for cb in &self.compatible_brands {
+ b.push(&cb.0)?;
+ }
+ Ok(())
+ }
+}
+
+/// Metadata box
+#[derive(Debug, Clone)]
+pub struct MetaBox {
+ pub hdlr: HdlrBox,
+ pub iloc: IlocBox,
+ pub iinf: IinfBox,
+ pub pitm: PitmBox,
+ pub iprp: IprpBox,
+ pub iref: ArrayVec<IrefBox, 2>,
+}
+
+impl MpegBox for MetaBox {
+ #[inline]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ + self.hdlr.len()
+ + self.pitm.len()
+ + self.iloc.len()
+ + self.iinf.len()
+ + self.iprp.len()
+ + self.iref.iter().map(|b| b.len()).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"meta", 0)?;
+ self.hdlr.write(&mut b)?;
+ self.pitm.write(&mut b)?;
+ self.iloc.write(&mut b)?;
+ self.iinf.write(&mut b)?;
+ for iref in &self.iref {
+ iref.write(&mut b)?;
+ }
+ self.iprp.write(&mut b)
+ }
+}
+
+/// Item Info box
+#[derive(Debug, Clone)]
+pub struct IinfBox {
+ pub items: ArrayVec<InfeBox, 2>,
+}
+
+impl MpegBox for IinfBox {
+ #[inline]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ + 2 // num items u16
+ + self.items.iter().map(|item| item.len()).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"iinf", 0)?;
+ b.u16(self.items.len() as _)?;
+ for infe in self.items.iter() {
+ infe.write(&mut b)?;
+ }
+ Ok(())
+ }
+}
+
+/// Item Info Entry box
+#[derive(Debug, Copy, Clone)]
+pub struct InfeBox {
+ pub id: u16,
+ pub typ: FourCC,
+ pub name: &'static str,
+}
+
+impl MpegBox for InfeBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ + 2 // id
+ + 2 // item_protection_index
+ + 4 // type
+ + self.name.as_bytes().len() + 1 // nul-terminated
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"infe", 2)?;
+ b.u16(self.id)?;
+ b.u16(0)?;
+ b.push(&self.typ.0)?;
+ b.push(self.name.as_bytes())?;
+ b.u8(0)
+ }
+}
+
+#[derive(Debug, Clone)]
+pub struct HdlrBox {
+}
+
+impl MpegBox for HdlrBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE + 4 + 4 + 13
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ // because an image format needs to be told it's an image format,
+ // and it does it the way classic MacOS used to, because Quicktime.
+ b.full_box(*b"hdlr", 0)?;
+ b.u32(0)?; // old MacOS file type handler
+ b.push(b"pict")?; // MacOS Quicktime subtype
+ b.u32(0)?; // Firefox 92 wants all 0 here
+ b.u32(0)?; // Reserved
+ b.u32(0)?; // Reserved
+ b.u8(0)?; // Pascal string for component name
+ Ok(())
+ }
+}
+
+/// Item properties + associations
+#[derive(Debug, Clone)]
+pub struct IprpBox {
+ pub ipco: IpcoBox,
+ pub ipma: IpmaBox,
+}
+
+impl MpegBox for IprpBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE
+ + self.ipco.len()
+ + self.ipma.len()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"iprp")?;
+ self.ipco.write(&mut b)?;
+ self.ipma.write(&mut b)
+ }
+}
+
+#[derive(Debug, Clone)]
+#[non_exhaustive]
+pub enum IpcoProp {
+ Av1C(Av1CBox),
+ Pixi(PixiBox),
+ Ispe(IspeBox),
+ AuxC(AuxCBox),
+ Colr(ColrBox),
+}
+
+impl IpcoProp {
+ pub fn len(&self) -> usize {
+ match self {
+ Self::Av1C(p) => p.len(),
+ Self::Pixi(p) => p.len(),
+ Self::Ispe(p) => p.len(),
+ Self::AuxC(p) => p.len(),
+ Self::Colr(p) => p.len(),
+ }
+ }
+
+ pub fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ match self {
+ Self::Av1C(p) => p.write(w),
+ Self::Pixi(p) => p.write(w),
+ Self::Ispe(p) => p.write(w),
+ Self::AuxC(p) => p.write(w),
+ Self::Colr(p) => p.write(w),
+ }
+ }
+}
+
+/// Item Property Container box
+#[derive(Debug, Clone)]
+pub struct IpcoBox {
+ props: ArrayVec<IpcoProp, 7>,
+}
+
+impl IpcoBox {
+ pub fn new() -> Self {
+ Self { props: ArrayVec::new() }
+ }
+
+ pub fn push(&mut self, prop: IpcoProp) -> u8 {
+ self.props.push(prop);
+ self.props.len() as u8 // the spec wants them off by one
+ }
+}
+
+impl MpegBox for IpcoBox {
+ #[inline]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE
+ + self.props.iter().map(|a| a.len()).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"ipco")?;
+ for p in self.props.iter() {
+ p.write(&mut b)?;
+ }
+ Ok(())
+ }
+}
+
+#[derive(Debug, Copy, Clone)]
+pub struct AuxCBox {
+ pub urn: &'static str,
+}
+
+impl AuxCBox {
+ pub fn len(&self) -> usize {
+ FULL_BOX_SIZE + self.urn.len() + 1
+ }
+
+ pub fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"auxC", 0)?;
+ b.push(self.urn.as_bytes())?;
+ b.u8(0)
+ }
+}
+
+/// Pixies, I guess.
+#[derive(Debug, Copy, Clone)]
+pub struct PixiBox {
+ pub depth: u8,
+ pub channels: u8,
+}
+
+impl PixiBox {
+ pub fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ + 1 + self.channels as usize
+ }
+
+ pub fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"pixi", 0)?;
+ b.u8(self.channels)?;
+ for _ in 0..self.channels {
+ b.u8(self.depth)?;
+ }
+ Ok(())
+ }
+}
+
+/// This is HEVC-specific and not for AVIF, but Chrome wants it :(
+#[derive(Debug, Copy, Clone)]
+pub struct IspeBox {
+ pub width: u32,
+ pub height: u32,
+}
+
+impl MpegBox for IspeBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE + 4 + 4
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"ispe", 0)?;
+ b.u32(self.width)?;
+ b.u32(self.height)
+ }
+}
+
+/// Property→image associations
+#[derive(Debug, Clone)]
+pub struct IpmaEntry {
+ pub item_id: u16,
+ pub prop_ids: ArrayVec<u8, 5>,
+}
+
+#[derive(Debug, Clone)]
+pub struct IpmaBox {
+ pub entries: ArrayVec<IpmaEntry, 2>,
+}
+
+impl MpegBox for IpmaBox {
+ #[inline]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE + 4 + self.entries.iter().map(|e| 2 + 1 + e.prop_ids.len()).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"ipma", 0)?;
+ b.u32(self.entries.len() as _)?; // entry count
+
+ for e in &self.entries {
+ b.u16(e.item_id)?;
+ b.u8(e.prop_ids.len() as u8)?; // assoc count
+ for &p in e.prop_ids.iter() {
+ b.u8(p)?;
+ }
+ }
+ Ok(())
+ }
+}
+
+/// Item Reference box
+#[derive(Debug, Copy, Clone)]
+pub struct IrefEntryBox {
+ pub from_id: u16,
+ pub to_id: u16,
+ pub typ: FourCC,
+}
+
+impl MpegBox for IrefEntryBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE
+ + 2 // from
+ + 2 // refcount
+ + 2 // to
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(self.typ.0)?;
+ b.u16(self.from_id)?;
+ b.u16(1)?;
+ b.u16(self.to_id)
+ }
+}
+
+#[derive(Debug, Copy, Clone)]
+pub struct IrefBox {
+ pub entry: IrefEntryBox,
+}
+
+impl MpegBox for IrefBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE + self.entry.len()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"iref", 0)?;
+ self.entry.write(&mut b)
+ }
+}
+
+/// Auxiliary item (alpha or depth map)
+#[derive(Debug, Copy, Clone)]
+pub struct AuxlBox {}
+
+impl MpegBox for AuxlBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"auxl", 0)
+ }
+}
+
+/// ColourInformationBox
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub struct ColrBox {
+ pub color_primaries: ColorPrimaries,
+ pub transfer_characteristics: TransferCharacteristics,
+ pub matrix_coefficients: MatrixCoefficients,
+ pub full_range_flag: bool, // u1 + u7
+}
+
+impl Default for ColrBox {
+ fn default() -> Self {
+ Self {
+ color_primaries: ColorPrimaries::Bt709,
+ transfer_characteristics: TransferCharacteristics::Srgb,
+ matrix_coefficients: MatrixCoefficients::Bt601,
+ full_range_flag: true,
+ }
+ }
+}
+
+impl MpegBox for ColrBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE + 4 + 2 + 2 + 2 + 1
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"colr")?;
+ b.u32(u32::from_be_bytes(*b"nclx"))?;
+ b.u16(self.color_primaries as u16)?;
+ b.u16(self.transfer_characteristics as u16)?;
+ b.u16(self.matrix_coefficients as u16)?;
+ b.u8(if self.full_range_flag { 1 << 7 } else { 0 })
+ }
+}
+#[derive(Debug, Copy, Clone)]
+pub struct Av1CBox {
+ pub seq_profile: u8,
+ pub seq_level_idx_0: u8,
+ pub seq_tier_0: bool,
+ pub high_bitdepth: bool,
+ pub twelve_bit: bool,
+ pub monochrome: bool,
+ pub chroma_subsampling_x: bool,
+ pub chroma_subsampling_y: bool,
+ pub chroma_sample_position: u8,
+}
+
+impl MpegBox for Av1CBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE + 4
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"av1C")?;
+ let flags1 =
+ u8::from(self.seq_tier_0) << 7 |
+ u8::from(self.high_bitdepth) << 6 |
+ u8::from(self.twelve_bit) << 5 |
+ u8::from(self.monochrome) << 4 |
+ u8::from(self.chroma_subsampling_x) << 3 |
+ u8::from(self.chroma_subsampling_y) << 2 |
+ self.chroma_sample_position;
+
+ b.push(&[
+ 0x81, // marker and version
+ (self.seq_profile << 5) | self.seq_level_idx_0, // x2d == 45
+ flags1,
+ 0,
+ ])
+ }
+}
+
+#[derive(Debug, Copy, Clone)]
+pub struct PitmBox(pub u16);
+
+impl MpegBox for PitmBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE + 2
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"pitm", 0)?;
+ b.u16(self.0)
+ }
+}
+
+#[derive(Debug, Clone)]
+pub struct IlocBox {
+ pub items: ArrayVec<IlocItem, 2>,
+}
+
+#[derive(Debug, Clone)]
+pub struct IlocItem {
+ pub id: u16,
+ pub extents: ArrayVec<IlocExtent, 1>,
+}
+
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub enum IlocOffset {
+ Relative(usize),
+ Absolute(u32),
+}
+
+#[derive(Debug, Copy, Clone)]
+pub struct IlocExtent {
+ pub offset: IlocOffset,
+ pub len: usize,
+}
+
+impl MpegBox for IlocBox {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ FULL_BOX_SIZE
+ + 1 // offset_size, length_size
+ + 1 // base_offset_size, reserved
+ + 2 // num items
+ + self.items.iter().map(|i| ( // for each item
+ 2 // id
+ + 2 // dat ref idx
+ + 0 // base_offset_size
+ + 2 // extent count
+ + i.extents.len() * ( // for each extent
+ 4 // extent_offset
+ + 4 // extent_len
+ )
+ )).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.full_box(*b"iloc", 0)?;
+ b.push(&[4 << 4 | 4, 0])?; // offset and length are 4 bytes
+
+ b.u16(self.items.len() as _)?; // num items
+ for item in self.items.iter() {
+ b.u16(item.id)?;
+ b.u16(0)?;
+ b.u16(item.extents.len() as _)?; // num extents
+ for ex in &item.extents {
+ b.u32(match ex.offset {
+ IlocOffset::Absolute(val) => val,
+ IlocOffset::Relative(_) => panic!("absolute offset must be set"),
+ })?;
+ b.u32(ex.len as _)?;
+ }
+ }
+ Ok(())
+ }
+}
+
+#[derive(Debug, Clone)]
+pub struct MdatBox<'data> {
+ pub data_chunks: ArrayVec<&'data [u8], 4>,
+}
+
+impl MpegBox for MdatBox<'_> {
+ #[inline(always)]
+ fn len(&self) -> usize {
+ BASIC_BOX_SIZE + self.data_chunks.iter().map(|c| c.len()).sum::<usize>()
+ }
+
+ fn write<B: WriterBackend>(&self, w: &mut Writer<B>) -> Result<(), B::Error> {
+ let mut b = w.new_box(self.len());
+ b.basic_box(*b"mdat")?;
+ for ch in &self.data_chunks {
+ b.push(ch)?;
+ }
+ Ok(())
+ }
+}
--- /dev/null
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[non_exhaustive]
+pub enum ColorPrimaries {
+ /// ITU-R BT1361
+ Bt709 = 1,
+ Unspecified = 2,
+ /// ITU-R BT601-6 525
+ Bt601 = 6,
+ /// ITU-R BT2020
+ Bt2020 = 9,
+ /// SMPTE ST 431-2
+ DciP3 = 11,
+ /// SMPTE ST 432-1
+ DisplayP3 = 12,
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[non_exhaustive]
+pub enum TransferCharacteristics {
+ /// ITU-R BT1361
+ Bt709 = 1,
+ Unspecified = 2,
+ /// ITU-R BT601-6 525
+ Bt601 = 6,
+ /// "Linear transfer characteristics"
+ Linear = 8,
+ /// "Logarithmic transfer characteristic (100:1 range)"
+ Log = 9,
+ /// "Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range)"
+ LogSqrt = 10,
+ /// sRGB
+ Srgb = 13,
+ /// ITU-R BT2020 for 10-bit system
+ Bt2020_10 = 14,
+ /// ITU-R BT2020 for 12-bit system
+ Bt2020_12 = 15,
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[non_exhaustive]
+pub enum MatrixCoefficients {
+ /// GBR (sRGB)
+ Rgb = 0,
+ /// ITU-R BT1361
+ Bt709 = 1,
+ Unspecified = 2,
+ /// ITU-R BT601-6 525
+ Bt601 = 6,
+ Ycgco = 8,
+ /// ITU-R BT2020 non-constant luminance system
+ Bt2020Ncl = 9,
+ /// ITU-R BT2020 constant luminance system
+ Bt2020Cl = 10,
+}
--- /dev/null
+//! # AVIF image serializer (muxer)
+//!
+//! ## Usage
+//!
+//! 1. Compress pixels using an AV1 encoder, such as [rav1e](//lib.rs/rav1e). [libaom](//lib.rs/libaom-sys) works too.
+//!
+//! 2. Call `avif_serialize::serialize_to_vec(av1_data, None, width, height, 8)`
+//!
+//! See [cavif](https://github.com/kornelski/cavif-rs) for a complete implementation.
+
+mod boxes;
+pub mod constants;
+mod writer;
+
+use crate::boxes::*;
+use arrayvec::ArrayVec;
+use std::io;
+
+/// Config for the serialization (allows setting advanced image properties).
+///
+/// See [`Aviffy::new`].
+pub struct Aviffy {
+ premultiplied_alpha: bool,
+ colr: ColrBox,
+}
+
+/// Makes an AVIF file given encoded AV1 data (create the data with [`rav1e`](//lib.rs/rav1e))
+///
+/// `color_av1_data` is already-encoded AV1 image data for the color channels (YUV, RGB, etc.).
+/// The color image MUST have been encoded without chroma subsampling AKA YUV444 (`Cs444` in `rav1e`)
+/// AV1 handles full-res color so effortlessly, you should never need chroma subsampling ever again.
+///
+/// Optional `alpha_av1_data` is a monochrome image (`rav1e` calls it "YUV400"/`Cs400`) representing transparency.
+/// Alpha adds a lot of header bloat, so don't specify it unless it's necessary.
+///
+/// `width`/`height` is image size in pixels. It must of course match the size of encoded image data.
+/// `depth_bits` should be 8, 10 or 12, depending on how the image was encoded (typically 8).
+///
+/// Color and alpha must have the same dimensions and depth.
+///
+/// Data is written (streamed) to `into_output`.
+pub fn serialize<W: io::Write>(into_output: W, color_av1_data: &[u8], alpha_av1_data: Option<&[u8]>, width: u32, height: u32, depth_bits: u8) -> io::Result<()> {
+ Aviffy::new().write(into_output, color_av1_data, alpha_av1_data, width, height, depth_bits)
+}
+
+impl Aviffy {
+ #[must_use]
+ pub fn new() -> Self {
+ Self {
+ premultiplied_alpha: false,
+ colr: Default::default(),
+ }
+ }
+
+ /// Set whether image's colorspace uses premultiplied alpha, i.e. RGB channels were multiplied by their alpha value,
+ /// so that transparent areas are all black. Image decoders will be instructed to undo the premultiplication.
+ ///
+ /// Premultiplied alpha images usually compress better and tolerate heavier compression, but
+ /// may not be supported correctly by less capable AVIF decoders.
+ ///
+ /// This just sets the configuration property. The pixel data must have already been processed before compression.
+ pub fn premultiplied_alpha(&mut self, is_premultiplied: bool) -> &mut Self {
+ self.premultiplied_alpha = is_premultiplied;
+ self
+ }
+
+ /// If set, must match the AV1 color payload, and will result in `colr` box added to AVIF.
+ /// Defaults to BT.601, because that's what Safari assumes when `colr` is missing.
+ /// Other browsers are smart enough to read this from the AV1 payload instead.
+ pub fn matrix_coefficients(&mut self, matrix_coefficients: constants::MatrixCoefficients) -> &mut Self {
+ self.colr.matrix_coefficients = matrix_coefficients;
+ self
+ }
+
+ /// If set, must match the AV1 color payload, and will result in `colr` box added to AVIF.
+ /// Defaults to sRGB.
+ pub fn transfer_characteristics(&mut self, transfer_characteristics: constants::TransferCharacteristics) -> &mut Self {
+ self.colr.transfer_characteristics = transfer_characteristics;
+ self
+ }
+
+ /// If set, must match the AV1 color payload, and will result in `colr` box added to AVIF.
+ /// Defaults to sRGB/Rec.709.
+ pub fn color_primaries(&mut self, color_primaries: constants::ColorPrimaries) -> &mut Self {
+ self.colr.color_primaries = color_primaries;
+ self
+ }
+
+ /// If set, must match the AV1 color payload, and will result in `colr` box added to AVIF.
+ /// Defaults to full.
+ pub fn full_color_range(&mut self, full_range: bool) -> &mut Self {
+ self.colr.full_range_flag = full_range;
+ self
+ }
+
+ /// Makes an AVIF file given encoded AV1 data (create the data with [`rav1e`](//lib.rs/rav1e))
+ ///
+ /// `color_av1_data` is already-encoded AV1 image data for the color channels (YUV, RGB, etc.).
+ /// The color image MUST have been encoded without chroma subsampling AKA YUV444 (`Cs444` in `rav1e`)
+ /// AV1 handles full-res color so effortlessly, you should never need chroma subsampling ever again.
+ ///
+ /// Optional `alpha_av1_data` is a monochrome image (`rav1e` calls it "YUV400"/`Cs400`) representing transparency.
+ /// Alpha adds a lot of header bloat, so don't specify it unless it's necessary.
+ ///
+ /// `width`/`height` is image size in pixels. It must of course match the size of encoded image data.
+ /// `depth_bits` should be 8, 10 or 12, depending on how the image has been encoded in AV1.
+ ///
+ /// Color and alpha must have the same dimensions and depth.
+ ///
+ /// Data is written (streamed) to `into_output`.
+ pub fn write<W: io::Write>(&self, into_output: W, color_av1_data: &[u8], alpha_av1_data: Option<&[u8]>, width: u32, height: u32, depth_bits: u8) -> io::Result<()> {
+ self.make_boxes(color_av1_data, alpha_av1_data, width, height, depth_bits).write(into_output)
+ }
+
+ fn make_boxes<'data>(&self, color_av1_data: &'data [u8], alpha_av1_data: Option<&'data [u8]>, width: u32, height: u32, depth_bits: u8) -> AvifFile<'data> {
+ let mut image_items = ArrayVec::new();
+ let mut iloc_items = ArrayVec::new();
+ let mut compatible_brands = ArrayVec::new();
+ let mut ipma_entries = ArrayVec::new();
+ let mut data_chunks = ArrayVec::new();
+ let mut irefs = ArrayVec::new();
+ let mut ipco = IpcoBox::new();
+ let color_image_id = 1;
+ let alpha_image_id = 2;
+ const ESSENTIAL_BIT: u8 = 0x80;
+ let color_depth_bits = depth_bits;
+ let alpha_depth_bits = depth_bits; // Sadly, the spec requires these to match.
+
+ image_items.push(InfeBox {
+ id: color_image_id,
+ typ: FourCC(*b"av01"),
+ name: "",
+ });
+ let ispe_prop = ipco.push(IpcoProp::Ispe(IspeBox { width, height }));
+ // This is redundant, but Chrome wants it, and checks that it matches :(
+ let av1c_color_prop = ipco.push(IpcoProp::Av1C(Av1CBox {
+ seq_profile: if color_depth_bits >= 12 { 2 } else { 1 },
+ seq_level_idx_0: 31,
+ seq_tier_0: false,
+ high_bitdepth: color_depth_bits >= 10,
+ twelve_bit: color_depth_bits >= 12,
+ monochrome: false,
+ chroma_subsampling_x: false,
+ chroma_subsampling_y: false,
+ chroma_sample_position: 0,
+ }));
+ // Useless bloat
+ let pixi_3 = ipco.push(IpcoProp::Pixi(PixiBox {
+ channels: 3,
+ depth: color_depth_bits,
+ }));
+ let mut prop_ids: ArrayVec<u8, 5> = [ispe_prop, av1c_color_prop | ESSENTIAL_BIT, pixi_3].into_iter().collect();
+ // Redundant info, already in AV1
+ if self.colr != Default::default() {
+ let colr_color_prop = ipco.push(IpcoProp::Colr(self.colr));
+ prop_ids.push(colr_color_prop);
+ }
+ ipma_entries.push(IpmaEntry {
+ item_id: color_image_id,
+ prop_ids,
+ });
+
+ if let Some(alpha_data) = alpha_av1_data {
+ image_items.push(InfeBox {
+ id: alpha_image_id,
+ typ: FourCC(*b"av01"),
+ name: "",
+ });
+ let av1c_alpha_prop = ipco.push(boxes::IpcoProp::Av1C(Av1CBox {
+ seq_profile: if alpha_depth_bits >= 12 { 2 } else { 0 },
+ seq_level_idx_0: 31,
+ seq_tier_0: false,
+ high_bitdepth: alpha_depth_bits >= 10,
+ twelve_bit: alpha_depth_bits >= 12,
+ monochrome: true,
+ chroma_subsampling_x: true,
+ chroma_subsampling_y: true,
+ chroma_sample_position: 0,
+ }));
+ // So pointless
+ let pixi_1 = ipco.push(IpcoProp::Pixi(PixiBox {
+ channels: 1,
+ depth: alpha_depth_bits,
+ }));
+
+ // that's a silly way to add 1 bit of information, isn't it?
+ let auxc_prop = ipco.push(IpcoProp::AuxC(AuxCBox {
+ urn: "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha",
+ }));
+ irefs.push(IrefBox {
+ entry: IrefEntryBox {
+ from_id: alpha_image_id,
+ to_id: color_image_id,
+ typ: FourCC(*b"auxl"),
+ },
+ });
+ if self.premultiplied_alpha {
+ irefs.push(IrefBox {
+ entry: IrefEntryBox {
+ from_id: color_image_id,
+ to_id: alpha_image_id,
+ typ: FourCC(*b"prem"),
+ },
+ });
+ }
+ ipma_entries.push(IpmaEntry {
+ item_id: alpha_image_id,
+ prop_ids: [ispe_prop, av1c_alpha_prop | ESSENTIAL_BIT, auxc_prop, pixi_1].into_iter().collect(),
+ });
+
+ // Use interleaved color and alpha, with alpha first.
+ // Makes it possible to display partial image.
+ iloc_items.push(IlocItem {
+ id: color_image_id,
+ extents: [
+ IlocExtent {
+ offset: IlocOffset::Relative(alpha_data.len()),
+ len: color_av1_data.len(),
+ },
+ ].into(),
+ });
+ iloc_items.push(IlocItem {
+ id: alpha_image_id,
+ extents: [
+ IlocExtent {
+ offset: IlocOffset::Relative(0),
+ len: alpha_data.len(),
+ },
+ ].into(),
+ });
+ data_chunks.push(alpha_data);
+ data_chunks.push(color_av1_data);
+ } else {
+ iloc_items.push(IlocItem {
+ id: color_image_id,
+ extents: [
+ IlocExtent {
+ offset: IlocOffset::Relative(0),
+ len: color_av1_data.len(),
+ },
+ ].into(),
+ });
+ data_chunks.push(color_av1_data);
+ };
+
+ compatible_brands.push(FourCC(*b"mif1"));
+ compatible_brands.push(FourCC(*b"miaf"));
+ AvifFile {
+ ftyp: FtypBox {
+ major_brand: FourCC(*b"avif"),
+ minor_version: 0,
+ compatible_brands,
+ },
+ meta: MetaBox {
+ hdlr: HdlrBox {},
+ iinf: IinfBox { items: image_items },
+ pitm: PitmBox(color_image_id),
+ iloc: IlocBox { items: iloc_items },
+ iprp: IprpBox {
+ ipco,
+ // It's not enough to define these properties,
+ // they must be assigned to the image
+ ipma: IpmaBox {
+ entries: ipma_entries,
+ },
+ },
+ iref: irefs,
+ },
+ // Here's the actual data. If HEIF wasn't such a kitchen sink, this
+ // would have been the only data this file needs.
+ mdat: MdatBox {
+ data_chunks,
+ },
+ }
+ }
+
+ #[must_use] pub fn to_vec(&self, color_av1_data: &[u8], alpha_av1_data: Option<&[u8]>, width: u32, height: u32, depth_bits: u8) -> Vec<u8> {
+ let mut out = Vec::with_capacity(color_av1_data.len() + alpha_av1_data.map_or(0, |a| a.len()) + 410);
+ self.write(&mut out, color_av1_data, alpha_av1_data, width, height, depth_bits).unwrap(); // Vec can't fail
+ out
+ }
+}
+
+/// See [`serialize`] for description. This one makes a `Vec` instead of using `io::Write`.
+#[must_use] pub fn serialize_to_vec(color_av1_data: &[u8], alpha_av1_data: Option<&[u8]>, width: u32, height: u32, depth_bits: u8) -> Vec<u8> {
+ Aviffy::new().to_vec(color_av1_data, alpha_av1_data, width, height, depth_bits)
+}
+
+#[test]
+fn test_roundtrip_parse_mp4() {
+ let test_img = b"av12356abc";
+ let avif = serialize_to_vec(test_img, None, 10, 20, 8);
+
+ let ctx = mp4parse::read_avif(&mut avif.as_slice(), mp4parse::ParseStrictness::Normal).unwrap();
+
+ assert_eq!(&test_img[..], ctx.primary_item_coded_data());
+}
+
+#[test]
+fn test_roundtrip_parse_mp4_alpha() {
+ let test_img = b"av12356abc";
+ let test_a = b"alpha";
+ let avif = serialize_to_vec(test_img, Some(test_a), 10, 20, 8);
+
+ let ctx = mp4parse::read_avif(&mut avif.as_slice(), mp4parse::ParseStrictness::Normal).unwrap();
+
+ assert_eq!(&test_img[..], ctx.primary_item_coded_data());
+ assert_eq!(&test_a[..], ctx.alpha_item_coded_data());
+}
+
+#[test]
+fn test_roundtrip_parse_avif() {
+ let test_img = [1,2,3,4,5,6];
+ let test_alpha = [77,88,99];
+ let avif = serialize_to_vec(&test_img, Some(&test_alpha), 10, 20, 8);
+
+ let ctx = avif_parse::read_avif(&mut avif.as_slice()).unwrap();
+
+ assert_eq!(&test_img[..], ctx.primary_item.as_slice());
+ assert_eq!(&test_alpha[..], ctx.alpha_item.as_deref().unwrap());
+}
+
+#[test]
+fn test_roundtrip_parse_avif_colr() {
+ let test_img = [1,2,3,4,5,6];
+ let test_alpha = [77,88,99];
+ let avif = Aviffy::new()
+ .matrix_coefficients(constants::MatrixCoefficients::Bt709)
+ .to_vec(&test_img, Some(&test_alpha), 10, 20, 8);
+
+ let ctx = avif_parse::read_avif(&mut avif.as_slice()).unwrap();
+
+ assert_eq!(&test_img[..], ctx.primary_item.as_slice());
+ assert_eq!(&test_alpha[..], ctx.alpha_item.as_deref().unwrap());
+}
+
+#[test]
+fn premultiplied_flag() {
+ let test_img = [1,2,3,4];
+ let test_alpha = [55,66,77,88,99];
+ let avif = Aviffy::new().premultiplied_alpha(true).to_vec(&test_img, Some(&test_alpha), 5, 5, 8);
+
+ let ctx = avif_parse::read_avif(&mut avif.as_slice()).unwrap();
+
+ assert!(ctx.premultiplied_alpha);
+ assert_eq!(&test_img[..], ctx.primary_item.as_slice());
+ assert_eq!(&test_alpha[..], ctx.alpha_item.as_deref().unwrap());
+}
--- /dev/null
+use std::convert::Infallible;
+use std::convert::TryFrom;
+use std::io;
+
+pub trait WriterBackend {
+ type Error;
+ fn extend_from_slice(&mut self, data: &[u8]) -> Result<(), Self::Error>;
+}
+
+/// `io::Write` generates bloated code (with backtrace for every byte written),
+/// so small boxes are written infallibly.
+impl WriterBackend for Vec<u8> {
+ type Error = Infallible;
+ #[inline(always)]
+ fn extend_from_slice(&mut self, data: &[u8]) -> Result<(), Infallible> {
+ self.extend_from_slice(data);
+ Ok(())
+ }
+}
+
+pub struct IO<W>(pub W);
+
+impl<W: io::Write> WriterBackend for IO<W> {
+ type Error = io::Error;
+ #[inline(always)]
+ fn extend_from_slice(&mut self, data: &[u8]) -> io::Result<()> {
+ self.0.write_all(data)
+ }
+}
+
+pub struct Writer<'p, 'w, B> {
+ parent: Option<&'p mut usize>,
+ left: Option<usize>,
+ out: &'w mut B,
+}
+
+impl<'w, B> Writer<'static, 'w, B> {
+ #[inline]
+ pub fn new(out: &'w mut B) -> Self {
+ Self {
+ parent: None,
+ left: None,
+ out,
+ }
+ }
+}
+
+impl<'p, 'w, B: WriterBackend> Writer<'p, 'w, B> {
+ #[inline]
+ pub fn new_box(&mut self, len: usize) -> Writer<'_, '_, B> {
+ Writer {
+ parent: match &mut self.left {
+ Some(l) => Some(l),
+ None => None,
+ },
+ left: Some(len),
+ out: self.out,
+ }
+ }
+
+ #[inline(always)]
+ pub fn full_box(&mut self, typ: [u8; 4], version: u8) -> Result<(), B::Error> {
+ self.basic_box(typ)?;
+ self.push(&[version, 0, 0, 0])
+ }
+
+ #[inline]
+ pub fn basic_box(&mut self, typ: [u8; 4]) -> Result<(), B::Error> {
+ let len = self.left.unwrap();
+ if let Some(parent) = &mut self.parent {
+ **parent -= len;
+ }
+ match u32::try_from(len) {
+ Ok(len) => self.u32(len)?,
+ Err(_) => {
+ self.u32(1)?;
+ self.u64(len as u64)?;
+ }
+ }
+ self.push(&typ)
+ }
+
+ #[inline(always)]
+ pub fn push(&mut self, data: &[u8]) -> Result<(), B::Error> {
+ *self.left.as_mut().unwrap() -= data.len();
+ self.out.extend_from_slice(data)
+ }
+
+ #[inline(always)]
+ pub fn u8(&mut self, val: u8) -> Result<(), B::Error> {
+ self.push(std::slice::from_ref(&val))
+ }
+
+ #[inline(always)]
+ pub fn u16(&mut self, val: u16) -> Result<(), B::Error> {
+ self.push(&val.to_be_bytes())
+ }
+
+ #[inline(always)]
+ pub fn u32(&mut self, val: u32) -> Result<(), B::Error> {
+ self.push(&val.to_be_bytes())
+ }
+
+ #[inline(always)]
+ pub fn u64(&mut self, val: u64) -> Result<(), B::Error> {
+ self.push(&val.to_be_bytes())
+ }
+}
+
+#[cfg(debug_assertions)]
+impl<B> Drop for Writer<'_, '_, B> {
+ fn drop(&mut self) {
+ if let Some(unwritten_bytes) = self.left {
+ assert_eq!(0, unwritten_bytes);
+ }
+ }
+}
projects / platform / upstream / rust-avif-serialize.git / commitdiff