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#![deny(unsafe_code)]
#![cfg_attr(test, deny(warnings))]
#![allow(unused_parens)]
extern crate byteorder;
use std::result;
use std::io;
use std::rc::Rc;
use std::io::{Cursor, Write, Seek, SeekFrom, Error};
use byteorder::{WriteBytesExt, ReadBytesExt, LittleEndian};
use std::collections::HashMap;
use std::collections::hash_map::Entry;
use std::mem::replace;
static CRC_LOOKUP_ARRAY : &'static[u32] = &[
0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4];
#[allow(dead_code)]
fn vorbis_crc32(array :&[u8]) -> u32 {
return vorbis_crc32_update(0, array);
}
fn vorbis_crc32_update(cur :u32, array :&[u8]) -> u32 {
let mut ret :u32 = cur;
for av in array {
ret = (ret << 8) ^ CRC_LOOKUP_ARRAY[(*av as u32 ^ (ret >> 24)) as usize];
}
return ret;
}
#[test]
fn test_crc32() {
let test_arr = &[
0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0xa3,
0x90, 0x5b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x01, 0x1e, 0x01, 0x76, 0x6f, 0x72,
0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02,
0x44, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80, 0xb5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0xb8, 0x01];
println!("");
println!("CRC of \"==!\" calculated as 0x{:08x} (expected 0x9f858776)", vorbis_crc32(&[61,61,33]));
println!("Test page CRC calculated as 0x{:08x} (expected 0x3d4e946d)", vorbis_crc32(test_arr));
assert!(vorbis_crc32(&[61,61,33]) == 0x9f858776);
assert!(vorbis_crc32(test_arr) == 0x3d4e946d);
assert!(vorbis_crc32(&test_arr[0 .. 27]) == 0x7b374db8);
}
#[derive(Debug)]
pub enum OggReadError {
NoCapturePatternFound,
InvalidStreamStructVer(u8),
HashMismatch(u32, u32),
ReadError(std::io::Error),
InvalidData,
}
impl std::error::Error for OggReadError {
fn description(&self) -> &str {
match self {
&OggReadError::NoCapturePatternFound => "No Ogg capture pattern found",
&OggReadError::InvalidStreamStructVer(_) =>
"A non zero stream structure version was passed",
&OggReadError::HashMismatch(_, _) => "CRC32 hash mismatch",
&OggReadError::ReadError(_) => "I/O error",
&OggReadError::InvalidData => "Constraint violated",
}
}
fn cause(&self) -> Option<&std::error::Error> {
match self {
&OggReadError::ReadError(ref err) => Some(err as &std::error::Error),
_ => None
}
}
}
impl std::fmt::Display for OggReadError {
fn fmt(&self, fmt :&mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
write!(fmt, "{}", std::error::Error::description(self))
}
}
impl From<std::io::Error> for OggReadError {
fn from(err :std::io::Error) -> OggReadError {
return OggReadError::ReadError(err);
}
}
pub type IoResult<T> = result::Result<T, std::io::Error>;
pub struct Packet {
pub data :Vec<u8>,
pub last_packet :bool,
pub absgp_page :u64,
pub stream_serial :u32,
}
struct PageInfo {
starts_with_continued :bool,
first_page :bool,
last_page :bool,
last_absgp :u64,
sequence_num :u32,
packet_positions :Vec<(u16,u16)>,
ends_with_continued :bool,
packet_idx :u8,
page_body :Vec<u8>,
last_overlap_pck :Vec<Vec<u8>>,
}
impl PageInfo {
fn is_last_pck_in_pg(self :&PageInfo) -> bool {
return ((self.packet_idx + 1 + (self.ends_with_continued as u8)) as usize
== self.packet_positions.len());
}
}
pub struct PacketReader<'a, T :io::Read + io::Seek + 'a> {
rdr :&'a mut T,
page_infos :HashMap<u32, PageInfo>,
stream_with_stuff :Option<u32>,
has_seeked :bool,
}
impl<'a, T :io::Read + io::Seek + 'a> PacketReader <'a, T> {
pub fn new(rdr :&mut T) -> PacketReader<T> {
return PacketReader { rdr: rdr, page_infos: HashMap::new(),
stream_with_stuff: None, has_seeked: false };
}
pub fn read_packet(self :&mut PacketReader <'a, T>) -> Result<Packet, OggReadError> {
while self.stream_with_stuff == None {
try!(self.read_ogg_page());
}
let str_serial :u32 = self.stream_with_stuff.unwrap();
let mut pg_info = self.page_infos.get_mut(&str_serial).unwrap();
let (offs, len) = pg_info.packet_positions[pg_info.packet_idx as usize];
let packet_content :Vec<u8> = if (
pg_info.packet_idx == 0 && pg_info.starts_with_continued
&& !(pg_info.ends_with_continued && pg_info.packet_positions.len() == 1)
) {
let mut siz :usize = 0;
for pck in pg_info.last_overlap_pck.iter() {
siz += pck.len();
}
siz += len as usize;
let mut cont :Vec<u8> = Vec::with_capacity(siz);
for pck in pg_info.last_overlap_pck.iter() {
cont.write_all(pck).unwrap();
}
pg_info.last_overlap_pck = Vec::new();
cont.write_all(&pg_info.page_body[offs as usize .. (offs + len) as usize]).unwrap();
cont
} else {
let mut cont :Vec<u8> = Vec::with_capacity(len as usize);
let cont_slice :&[u8] = &pg_info.page_body[offs as usize .. (offs + len) as usize];
cont.write_all(cont_slice).unwrap();
cont
};
let last_pck_in_pg = pg_info.is_last_pck_in_pg();
let last_pck_overall = pg_info.last_page && last_pck_in_pg;
pg_info.packet_idx += 1;
if last_pck_in_pg {
self.stream_with_stuff = None;
}
return Ok(Packet {
data: packet_content,
last_packet: last_pck_overall,
absgp_page: pg_info.last_absgp,
stream_serial: str_serial,
});
}
fn read_until_pg_header(self :&mut PacketReader <'a, T>) -> Result<[u8; 27], OggReadError> {
let mut cpat_offs = 0;
let mut check_arr = |arr :&[u8]| {
for (i, ch) in arr.iter().enumerate() {
match *ch {
0x4f if cpat_offs == 0 => cpat_offs = 1,
0x67 if cpat_offs == 1 || cpat_offs == 2 => cpat_offs += 1,
0x53 if cpat_offs == 3 => return Some(i),
_ => cpat_offs = 0,
}
}
return None;
};
let mut header_buf :[u8; 27] = [0; 27];
try!(self.rdr.read_exact(&mut header_buf));
match check_arr(&header_buf) {
Some(idx) => if idx == 3 {
return Ok(header_buf);
} else {
let mut ret_buf :[u8; 27] = [0; 27];
let tocopy_len = header_buf.len() - idx;
(&mut ret_buf[0..tocopy_len]).copy_from_slice(&header_buf[idx..]);
try!(self.rdr.read_exact(&mut ret_buf[tocopy_len..]));
return Ok(ret_buf);
},
None => (),
}
let mut read_amount = 27;
let read_amount_max = 150 * 1024;
let mut rdr_buf :[u8; 1024] = [0; 1024];
loop {
let rd_len = try!(self.rdr.read(&mut rdr_buf));
read_amount += rd_len;
if rd_len == 0 {
try!(Err(OggReadError::NoCapturePatternFound));
}
match check_arr(&rdr_buf[0..rd_len]) {
Some(off) => {
let mut ret_buf :[u8; 27] = [0; 27];
ret_buf[0] = 0x4f;
ret_buf[1] = 0x67;
ret_buf[2] = 0x67;
ret_buf[3] = 0x53;
let cnt_from_rdr_buf = rdr_buf.len() - off;
use std::cmp::min;
let copy_amount = min(24, cnt_from_rdr_buf);
(&mut ret_buf[3..copy_amount + 3])
.copy_from_slice(&rdr_buf[off..copy_amount + off]);
if cnt_from_rdr_buf > 24 {
try!(self.rdr.seek(SeekFrom::Current(24 - (cnt_from_rdr_buf as i64))));
} else if cnt_from_rdr_buf == 24 {
} else {
try!(self.rdr.read_exact(
&mut ret_buf[cnt_from_rdr_buf + 3..]));
}
return Ok(ret_buf);
},
None => (),
}
if read_amount > read_amount_max {
try!(Err(OggReadError::NoCapturePatternFound));
}
}
}
fn read_ogg_page(self :&mut PacketReader <'a, T>) -> Result<(), OggReadError> {
let mut header_buf :[u8; 27] = try!(self.read_until_pg_header());
let mut header_rdr = Cursor::new(header_buf);
header_rdr.set_position(4);
let stream_structure_version = try!(header_rdr.read_u8());
if stream_structure_version != 0 {
try!(Err(OggReadError::InvalidStreamStructVer(stream_structure_version)));
}
let header_type_flag = try!(header_rdr.read_u8());
let absgp = try!(header_rdr.read_u64::<LittleEndian>());
let stream_serial = try!(header_rdr.read_u32::<LittleEndian>());
let sequence_num = try!(header_rdr.read_u32::<LittleEndian>());
let checksum = try!(header_rdr.read_u32::<LittleEndian>());
let page_segments :usize = try!(header_rdr.read_u8()) as usize;
let continued_packet :bool = header_type_flag & 0x01u8 != 0;
let first_page :bool = header_type_flag & 0x02u8 != 0;
let last_page :bool = header_type_flag & 0x04u8 != 0;
let mut segments_buf = vec![0; page_segments];
try!(self.rdr.read_exact(&mut segments_buf));
let mut page_siz :u16 = 0;
let mut packet_count :u16 = 0;
let mut ends_with_continued :bool = continued_packet;
for val in &segments_buf {
page_siz += *val as u16;
packet_count += (*val < 255) as u16;
ends_with_continued = !(*val < 255);
}
let mut packets = Vec::with_capacity(packet_count as usize
+ ends_with_continued as usize);
let mut cur_packet_siz :u16 = 0;
let mut cur_packet_offs :u16 = 0;
for val in &segments_buf {
cur_packet_siz += *val as u16;
if *val < 255 {
packets.push((cur_packet_offs, cur_packet_siz));
cur_packet_offs += cur_packet_siz;
cur_packet_siz = 0;
}
}
if ends_with_continued {
packets.push((cur_packet_offs, cur_packet_siz));
}
let mut page_data = vec![0; page_siz as usize];
try!(self.rdr.read_exact(&mut page_data));
header_buf[22] = 0;
header_buf[23] = 0;
header_buf[24] = 0;
header_buf[25] = 0;
let mut hash_calculated :u32;
hash_calculated = vorbis_crc32_update(0, &header_buf);
hash_calculated = vorbis_crc32_update(hash_calculated, &segments_buf);
hash_calculated = vorbis_crc32_update(hash_calculated, &page_data);
if checksum != hash_calculated {
try!(Err(OggReadError::HashMismatch(checksum, hash_calculated)));
}
match self.page_infos.entry(stream_serial) {
Entry::Occupied(mut o) => {
let inf = o.get_mut();
if first_page {
try!(Err(OggReadError::InvalidData));
}
if continued_packet != inf.ends_with_continued {
if !self.has_seeked {
try!(Err(OggReadError::InvalidData));
} else {
inf.last_overlap_pck.clear();
if continued_packet {
packets.remove(0);
if packet_count != 0 {
packet_count -= 1;
} else {
ends_with_continued = false;
}
}
}
} else if continued_packet {
let (offs, len) = inf.packet_positions[inf.packet_idx as usize];
if len as usize != inf.page_body.len() {
let mut tmp = Vec::with_capacity(len as usize);
tmp.write_all(&inf.page_body[offs as usize .. (offs + len) as usize]).unwrap();
inf.last_overlap_pck.push(tmp);
} else {
inf.last_overlap_pck.push(replace(&mut inf.page_body, vec![0;0]));
}
}
inf.starts_with_continued = continued_packet;
inf.first_page = first_page;
inf.last_page = last_page;
inf.last_absgp = absgp;
inf.sequence_num = sequence_num;
inf.packet_positions = packets;
inf.ends_with_continued = ends_with_continued;
inf.packet_idx = 0;
inf.page_body = page_data;
},
Entry::Vacant(v) => {
if !self.has_seeked {
if (!first_page || continued_packet) {
try!(Err(OggReadError::InvalidData));
}
} else {
if !first_page {
}
if continued_packet {
packets.remove(0);
if packet_count != 0 {
packet_count -= 1;
} else {
ends_with_continued = false;
}
}
}
v.insert(PageInfo {
starts_with_continued: continued_packet,
first_page: first_page,
last_page: last_page,
last_absgp: absgp,
sequence_num: sequence_num,
packet_positions: packets,
ends_with_continued: ends_with_continued,
packet_idx: 0,
page_body: page_data,
last_overlap_pck: Vec::new(),
});
},
}
let pg_has_stuff :bool = packet_count > 0;
if pg_has_stuff {
self.stream_with_stuff = Some(stream_serial);
} else {
self.stream_with_stuff = None;
}
return Ok(());
}
pub fn seek_bytes(&mut self, pos :SeekFrom) -> Result<u64, Error> {
let r = try!(self.rdr.seek(pos));
self.stream_with_stuff = None;
self.page_infos = HashMap::new();
self.has_seeked = true;
return Ok(r);
}
}
pub struct PacketWriter<'a, T :io::Write + 'a> {
wtr :&'a mut T,
page_vals :HashMap<u32, CurrentPageValues>,
}
struct CurrentPageValues {
first_page :bool,
sequence_num :u32,
segment_cnt :u8,
cur_pg_lacing :[u8; 255],
cur_pg_data :Vec<Rc<[u8]>>,
pck_this_overflow_idx :Option<usize>,
pck_last_overflow_idx :Option<usize>,
}
#[derive(PartialEq)]
#[derive(Clone)]
pub enum PacketWriteEndInfo {
NormalPacket,
EndPage,
EndStream,
}
impl <'a, T :io::Write + 'a> PacketWriter<'a, T> {
pub fn new(wtr :&mut T) -> PacketWriter<T> {
return PacketWriter {
wtr : wtr,
page_vals : HashMap::new(),
};
}
pub fn write_packet(&mut self, pck_cont :Rc<[u8]>, serial :u32,
inf :PacketWriteEndInfo,
absgp :u64) -> IoResult<()> {
let is_end_stream :bool = inf == PacketWriteEndInfo::EndStream;
let mut pg = self.page_vals.entry(serial).or_insert(
CurrentPageValues {
first_page : true,
sequence_num : 0,
segment_cnt : 0,
cur_pg_lacing :[0; 255],
cur_pg_data :Vec::with_capacity(255),
pck_this_overflow_idx : None,
pck_last_overflow_idx : None,
}
);
pg.cur_pg_data.push(pck_cont.clone());
let last_data_segment_size = (pck_cont.len() % 255) as u8;
let needed_segments :usize = (pck_cont.len() / 255) + 1;
let mut segment_in_page_i :u8 = pg.segment_cnt;
let mut at_page_end :bool = false;
for segment_i in 0 .. needed_segments {
at_page_end = false;
if segment_i + 1 < needed_segments {
pg.cur_pg_lacing[segment_in_page_i as usize] = 255;
} else {
pg.cur_pg_lacing[segment_in_page_i as usize] = last_data_segment_size;
}
segment_in_page_i = segment_in_page_i.wrapping_add(1);
if segment_in_page_i == 0 {
if segment_i + 1 < needed_segments {
pg.pck_this_overflow_idx = Some((segment_i + 1) * 255);
try!(PacketWriter::write_page(self.wtr, serial, pg, false, absgp));
pg.pck_last_overflow_idx = pg.pck_this_overflow_idx;
pg.pck_this_overflow_idx = None;
} else {
try!(PacketWriter::write_page(self.wtr,
serial, pg, is_end_stream, absgp));
pg.pck_this_overflow_idx = None;
pg.pck_last_overflow_idx = None;
}
pg.sequence_num += 1;
at_page_end = true;
}
pg.segment_cnt = segment_in_page_i;
}
if (inf != PacketWriteEndInfo::NormalPacket) && !at_page_end {
try!(PacketWriter::write_page(self.wtr, serial, pg, is_end_stream, absgp));
}
Ok(())
}
fn write_page(wtr :&'a mut T, serial :u32, pg :&mut CurrentPageValues,
last_page :bool, absgp :u64) -> IoResult<()> {
let mut hdr_cur = Cursor::new(Vec::with_capacity(27));
try!(hdr_cur.write_all(&[0x4f, 0x67, 0x67, 0x53, 0x00]));
let mut flags :u8 = 0;
if pg.pck_last_overflow_idx.is_some() { flags |= 0x01; }
if pg.first_page { flags |= 0x02; }
if last_page { flags |= 0x04; }
try!(hdr_cur.write_u8(flags));
try!(hdr_cur.write_u64::<LittleEndian>(absgp));
try!(hdr_cur.write_u32::<LittleEndian>(serial));
try!(hdr_cur.write_u32::<LittleEndian>(pg.sequence_num));
try!(hdr_cur.seek(SeekFrom::Current(4)));
try!(hdr_cur.write_u8(pg.segment_cnt));
let mut hash_calculated :u32;
let pg_lacing = &pg.cur_pg_lacing[0 .. pg.segment_cnt as usize];
let pck_data = &pg.cur_pg_data;
hash_calculated = vorbis_crc32_update(0, hdr_cur.get_ref());
hash_calculated = vorbis_crc32_update(hash_calculated, pg_lacing);
for (idx, pck) in pck_data.iter().enumerate() {
let mut start :usize = 0;
if idx == 0 { if let Some(idx) = pg.pck_last_overflow_idx {
start = idx;
}}
let mut end :usize = pck.len();
if idx + 1 == pck_data.len() {
if let Some(idx) = pg.pck_this_overflow_idx {
end = idx;
}
}
hash_calculated = vorbis_crc32_update(hash_calculated,
&pck[start .. end]);
}
try!(hdr_cur.seek(SeekFrom::Start(22)));
try!(hdr_cur.write_u32::<LittleEndian>(hash_calculated));
try!(wtr.write_all(hdr_cur.get_ref()));
try!(wtr.write_all(pg_lacing));
for (idx, pck) in pck_data.iter().enumerate() {
let mut start :usize = 0;
if idx == 0 { if let Some(idx) = pg.pck_last_overflow_idx {
start = idx;
}}
let mut end :usize = pck.len();
if idx + 1 == pck_data.len() {
if let Some(idx) = pg.pck_this_overflow_idx {
end = idx;
}
}
try!(wtr.write_all(&pck[start .. end]));
}
return Ok(());
}
}
macro_rules! test_arr_eq {
($a_arr:expr, $b_arr:expr) => {
for i in 0 .. $b_arr.len() {
if $a_arr[i] != $b_arr[i] {
panic!("Mismatch of values at index {}: {} {}", i, $a_arr[i], $b_arr[i]);
}
}
}
}
#[test]
fn test_ogg_packet_write() {
let mut c = Cursor::new(Vec::new());
let test_arr_out = [
0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0xa3,
0x90, 0x5b, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x94,
0x4e, 0x3d, 0x01, 0x1e, 0x01, 0x76, 0x6f, 0x72,
0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02,
0x44, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80, 0xb5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0xb8, 0x01u8];
let test_arr_in = [0x01, 0x76, 0x6f, 0x72,
0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02,
0x44, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80, 0xb5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0xb8, 0x01u8];
{
let mut w = PacketWriter::new(&mut c);
w.write_packet(Rc::new(test_arr_in), 0x5b90a374,
PacketWriteEndInfo::EndPage, 0).unwrap();
}
assert_eq!(c.get_ref().len(), test_arr_out.len());
let cr = c.get_ref();
test_arr_eq!(cr, test_arr_out);
}
#[test]
fn test_ogg_packet_rw() {
let mut c = Cursor::new(Vec::new());
let test_arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let test_arr_2 = [2, 4, 8, 16, 32, 64, 128, 127, 126, 125, 124];
let test_arr_3 = [3, 5, 9, 17, 33, 65, 129, 129, 127, 126, 125];
{
let mut w = PacketWriter::new(&mut c);
let np = PacketWriteEndInfo::NormalPacket;
w.write_packet(Rc::new(test_arr), 0xdeadb33f, np.clone(), 0).unwrap();
w.write_packet(Rc::new(test_arr_2), 0xdeadb33f, np.clone(), 1).unwrap();
w.write_packet(Rc::new(test_arr_3), 0xdeadb33f,
PacketWriteEndInfo::EndPage, 2).unwrap();
}
assert_eq!(c.seek(SeekFrom::Start(0)).unwrap(), 0);
{
let mut r = PacketReader::new(&mut c);
let p1 = r.read_packet().unwrap();
assert_eq!(test_arr, *p1.data);
let p2 = r.read_packet().unwrap();
assert_eq!(test_arr_2, *p2.data);
let p3 = r.read_packet().unwrap();
assert_eq!(test_arr_3, *p3.data);
}
let mut c = Cursor::new(Vec::new());
let test_arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let mut test_arr_2 = [0; 700];
let test_arr_3 = [3, 5, 9, 17, 33, 65, 129, 129, 127, 126, 125];
for (idx, a) in test_arr_2.iter_mut().enumerate() {
*a = (idx as u8) / 4;
}
{
let mut w = PacketWriter::new(&mut c);
let np = PacketWriteEndInfo::NormalPacket;
w.write_packet(Rc::new(test_arr), 0xdeadb33f, np.clone(), 0).unwrap();
w.write_packet(Rc::new(test_arr_2), 0xdeadb33f, np.clone(), 1).unwrap();
w.write_packet(Rc::new(test_arr_3), 0xdeadb33f,
PacketWriteEndInfo::EndPage, 2).unwrap();
}
assert_eq!(c.seek(SeekFrom::Start(0)).unwrap(), 0);
{
let mut r = PacketReader::new(&mut c);
let p1 = r.read_packet().unwrap();
assert_eq!(test_arr, *p1.data);
let p2 = r.read_packet().unwrap();
test_arr_eq!(test_arr_2, *p2.data);
let p3 = r.read_packet().unwrap();
assert_eq!(test_arr_3, *p3.data);
}
let mut c = Cursor::new(Vec::new());
let mut test_arr_2 = [0; 14_000];
let test_arr_3 = [3, 5, 9, 17, 33, 65, 129, 129, 127, 126, 125];
for (idx, a) in test_arr_2.iter_mut().enumerate() {
*a = (idx as u8) / 4;
}
{
let mut w = PacketWriter::new(&mut c);
let np = PacketWriteEndInfo::NormalPacket;
w.write_packet(Rc::new(test_arr_2), 0xdeadb33f, np.clone(), 1).unwrap();
w.write_packet(Rc::new(test_arr_3), 0xdeadb33f,
PacketWriteEndInfo::EndPage, 2).unwrap();
}
assert_eq!(c.seek(SeekFrom::Start(0)).unwrap(), 0);
{
let mut r = PacketReader::new(&mut c);
let p2 = r.read_packet().unwrap();
test_arr_eq!(test_arr_2, *p2.data);
let p3 = r.read_packet().unwrap();
assert_eq!(test_arr_3, *p3.data);
}
}