127 lines
4.3 KiB
Rust
127 lines
4.3 KiB
Rust
// This file is part of the NRGrip project.
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//
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// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//! NRG metadata structure, storing the contents of all of the NRG chunks.
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use std::fmt;
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use super::cuex::NrgCuex;
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use super::daox::NrgDaox;
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use super::sinf::NrgSinf;
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use super::mtyp::NrgMtyp;
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#[derive(Debug)]
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pub struct NrgMetadata {
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pub file_size: u64,
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pub nrg_version: u8,
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pub chunk_offset: u64,
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pub cuex_chunk: Option<NrgCuex>,
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pub daox_chunk: Option<NrgDaox>,
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pub sinf_chunk: Option<NrgSinf>,
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pub mtyp_chunk: Option<NrgMtyp>,
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pub skipped_chunks: Vec<String>,
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}
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impl NrgMetadata {
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pub fn new() -> NrgMetadata {
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NrgMetadata {
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file_size: 0,
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nrg_version: 0,
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chunk_offset: 0,
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cuex_chunk: None,
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daox_chunk: None,
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sinf_chunk: None,
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mtyp_chunk: None,
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skipped_chunks: Vec::new(),
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}
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}
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/// Returns the index1 of the first DAOX track in `metadata`, or 0 if there
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/// are no DAOX tracks.
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pub fn first_audio_byte(&self) -> u64 {
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if let Some(daox_chunk) = self.daox_chunk.as_ref() {
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if let Some(first_track) = daox_chunk.tracks.first() {
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return first_track.index1;
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}
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}
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0
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}
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/// Returns the number of the byte past the last audio byte in the image
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/// (i.e. `last audio byte + 1`).
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///
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/// This byte is indicated by the `track_end` of the last DAOX track if at
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/// least one track is present in the DAOX chunk. If not, `chunk_offset` is
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/// returned.
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///
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/// Note that the two values should always be identical anyway, but you
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/// never know.
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pub fn last_audio_byte(&self) -> u64 {
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if let Some(daox_chunk) = self.daox_chunk.as_ref() {
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if let Some(last_track) = daox_chunk.tracks.last() {
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return last_track.track_end;
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}
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}
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self.chunk_offset
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}
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}
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impl fmt::Display for NrgMetadata {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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try!(write!(f, "Image size: {} Bytes\n\
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NRG format version: {}\n\
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First chunk offset: {}",
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self.file_size,
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self.nrg_version,
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self.chunk_offset,
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));
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match self.cuex_chunk {
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None => {},
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Some(ref chunk) => try!(write!(f, "\n\n\
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{}", chunk)),
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}
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match self.daox_chunk {
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None => {},
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Some(ref chunk) => try!(write!(f, "\n\n\
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{}", chunk)),
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}
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match self.sinf_chunk {
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None => {},
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Some(ref chunk) => try!(write!(f, "\n\n\
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{}", chunk)),
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}
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match self.mtyp_chunk {
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None => {},
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Some(ref chunk) => try!(write!(f, "\n\n\
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{}", chunk)),
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}
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if !self.skipped_chunks.is_empty() {
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try!(write!(f, "\n\nUnhandled chunks present in this image:"));
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for chunk_id in &self.skipped_chunks {
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try!(write!(f, " {}", chunk_id));
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}
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}
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Ok(())
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}
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}
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