isomp4: parse Dolby Vision configuration

symphonia-format-isomp4/src/atoms/dvvc.rs

@@ -0,0 +1,43 @@
+// Symphonia
+// Copyright (c) 2019-2022 The Project Symphonia Developers.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+use symphonia_core::codecs::video::well_known::extra_data::VIDEO_EXTRA_DATA_ID_DOLBY_VISION_CONFIG;
+use symphonia_core::codecs::video::VideoExtraData;
+use symphonia_core::errors::{Error, Result};
+use symphonia_core::io::ReadBytes;
+
+use crate::atoms::{Atom, AtomHeader};
+
+use super::stsd::VisualSampleEntry;
+
+#[allow(dead_code)]
+#[derive(Debug)]
+pub struct DvvCAtom {
+    extra_data: VideoExtraData,
+}
+
+impl Atom for DvvCAtom {
+    fn read<B: ReadBytes>(reader: &mut B, header: AtomHeader) -> Result<Self> {
+        // The Dolby Vision Configuration atom payload
+        let len = header
+            .data_len()
+            .ok_or_else(|| Error::DecodeError("isomp4 (dvvC): expected atom size to be known"))?;
+
+        let dv_data = VideoExtraData {
+            id: VIDEO_EXTRA_DATA_ID_DOLBY_VISION_CONFIG,
+            data: reader.read_boxed_slice_exact(len as usize)?,
+        };
+
+        Ok(Self { extra_data: dv_data })
+    }
+}
+
+impl DvvCAtom {
+    pub fn fill_video_sample_entry(&self, entry: &mut VisualSampleEntry) {
+        entry.extra_data.push(self.extra_data.clone());
+    }
+}

symphonia-format-isomp4/src/atoms/mod.rs

@@ -16,6 +16,7 @@ pub(crate) mod co64;
 pub(crate) mod ctts;
 pub(crate) mod dac3;
 pub(crate) mod dec3;
+pub(crate) mod dvvc;
 pub(crate) mod edts;
 pub(crate) mod elst;
 pub(crate) mod esds;
@@ -141,6 +142,7 @@ pub enum AtomType {
     DateTag,
     DescriptionTag,
     DiskNumberTag,
+    DolbyVisionConfiguration,
     Eac3Config,
     Edit,
     EditList,
@@ -252,6 +254,7 @@ impl From<[u8; 4]> for AtomType {
             b"dOps" => AtomType::OpusDsConfig,
             b"dvh1" => AtomType::VisualSampleEntryDvh1,
             b"dvhe" => AtomType::VisualSampleEntryDvhe,
+            b"dvvC" => AtomType::DolbyVisionConfiguration,
             b"edts" => AtomType::Edit,
             b"elst" => AtomType::EditList,
             b"esds" => AtomType::Esds,

symphonia-format-isomp4/src/atoms/stsd.rs

@@ -33,6 +33,7 @@ use crate::atoms::{
 };
 use crate::fp::FpU16;
 
+use super::dvvc::DvvCAtom;
 use super::{AtomIterator, AvcCAtom, HvcCAtom};
 
 /// Sample description atom.
@@ -660,6 +661,10 @@ fn read_visual_sample_entry<B: ReadBytes>(
                 let atom = iter.read_atom::<HvcCAtom>()?;
                 atom.fill_video_sample_entry(&mut entry);
             }
+            AtomType::DolbyVisionConfiguration => {
+                let atom = iter.read_atom::<DvvCAtom>()?;
+                atom.fill_video_sample_entry(&mut entry);
+            }
             _ => {
                 debug!("unknown visual sample entry sub-atom: {:?}.", entry_header.atom_type());
             }