+++ /dev/null
-use std::io::SeekFrom;
-use nihav_core::codecs::*;
-use nihav_core::demuxers::*;
-use nihav_core::muxers::*;
-use nihav_registry::detect;
-use nihav_core::io::byteio::ByteIO;
-use nihav_core::sbbox::*;
-use nihav_allstuff::*;
-use crate::null::*;
-use crate::imgseq::*;
-
-pub struct FullRegister {
- pub dmx_reg: RegisteredDemuxers,
- pub rdmx_reg: RegisteredRawDemuxers,
- pub pkt_reg: RegisteredPacketisers,
- pub dec_reg: RegisteredDecoders,
- pub enc_reg: RegisteredEncoders,
- pub mux_reg: RegisteredMuxers,
-}
-
-impl FullRegister {
- pub fn new() -> Self {
- let mut dmx_reg = RegisteredDemuxers::new();
- nihav_register_all_demuxers(&mut dmx_reg);
- let mut rdmx_reg = RegisteredRawDemuxers::new();
- nihav_register_all_raw_demuxers(&mut rdmx_reg);
- let mut dec_reg = RegisteredDecoders::new();
- nihav_register_all_decoders(&mut dec_reg);
- let mut pkt_reg = RegisteredPacketisers::new();
- nihav_register_all_packetisers(&mut pkt_reg);
- let mut enc_reg = RegisteredEncoders::new();
- nihav_register_all_encoders(&mut enc_reg);
- enc_reg.add_encoder(NULL_ENCODER);
- let mut mux_reg = RegisteredMuxers::new();
- nihav_register_all_muxers(&mut mux_reg);
- mux_reg.add_muxer(NULL_MUXER);
- Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg, enc_reg, mux_reg }
- }
-}
-
-pub struct RawStreamCtx<'a> {
- stream: NAStreamRef,
- sm: StreamManager,
- packetiser: Box<dyn NAPacketiser + Send>,
- br: &'a mut dyn ByteIO,
- pts: u64,
-}
-
-impl<'a> RawStreamCtx<'a> {
- fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut dyn ByteIO) -> Self {
- let mut sm = StreamManager::new();
- sm.add_stream_ref(stream.clone());
- Self { stream, sm, packetiser, br, pts: 0 }
- }
-}
-
-type ReaderBox = Box<dyn ByteIO>;
-
-pub enum DemuxerObject<'a> {
- None,
- Normal(SBBox<ReaderBox, Demuxer<'a>>),
- Raw(SBBox<ReaderBox, RawDemuxer<'a>>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool),
- RawStream(SBBox<ReaderBox, RawStreamCtx<'a>>),
- ImageSequence(ImgSeqDemuxer),
-}
-
-impl<'a> DemuxerObject<'a> {
- pub fn create(mut br: ReaderBox, reg: &FullRegister, name: &str, ifmt: &Option<String>, is_raw: bool, print_info: bool) -> DemuxerObject<'a> {
- if !is_raw {
- let dmx_name = if let Some(ref dname) = ifmt {
- dname.as_str()
- } else if let Some((dname, score)) = detect::detect_format(name, &mut *br) {
- if print_info {
- println!("detected {} with score {:?}", dname, score);
- }
- dname
- } else {
- ""
- };
- if !dmx_name.is_empty() {
- if print_info {
- println!("trying demuxer {} on {}", dmx_name, name);
- }
- if let Some(dmx_fact) = reg.dmx_reg.find_demuxer(dmx_name) {
- br.seek(SeekFrom::Start(0)).unwrap();
-
- let ret = SelfBorrow::try_new(br, |br_| {
- unsafe {
- create_demuxer(dmx_fact, (*br_).as_mut()).ok()
- }
- });
- if let Ok(dmx) = ret {
- return DemuxerObject::Normal(dmx);
- } else {
- println!("demuxer creation failed!");
- return DemuxerObject::None;
- }
- }
- }
- if ifmt.is_some() {
- return DemuxerObject::None;
- }
- if !dmx_name.is_empty() {
- if print_info {
- println!("trying raw demuxer {} on {}", dmx_name, name);
- }
- if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) {
- br.seek(SeekFrom::Start(0)).unwrap();
- let ret = SelfBorrow::try_new(br, |br_| {
- unsafe {
- create_raw_demuxer(rdmx_fact, (*br_).as_mut()).ok()
- }
- });
- if let Ok(dmx) = ret {
- let mut pkts = Vec::new();
- for stream in dmx.get_object().get_streams() {
- if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
- let mut packetiser = (pcreate)();
- packetiser.attach_stream(stream);
- pkts.push(Some(packetiser));
- } else {
- pkts.push(None);
- }
- }
- return DemuxerObject::Raw(dmx, pkts, false);
- } else {
- println!("raw demuxer creation failed!");
- return DemuxerObject::None;
- }
- }
- }
- for rdmx in reg.rdmx_reg.iter() {
- if rdmx.check_format(&mut *br) {
- if print_info {
- println!("detected {} as {}", name, rdmx.get_name());
- }
- br.seek(SeekFrom::Start(0)).unwrap();
- let ret = SelfBorrow::try_new(br, |br_| {
- unsafe {
- create_raw_demuxer(*rdmx, (*br_).as_mut()).ok()
- }
- });
- if let Ok(dmx) = ret {
- let mut pkts = Vec::new();
- for stream in dmx.get_object().get_streams() {
- if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
- let packetiser = (pcreate)();
- pkts.push(Some(packetiser));
- } else {
- pkts.push(None);
- }
- }
- return DemuxerObject::Raw(dmx, pkts, false);
- } else {
- println!("raw demuxer creation failed!");
- return DemuxerObject::None;
- }
- }
- }
- }
- br.seek(SeekFrom::Start(0)).unwrap();
- let mut buf = vec![0; 1048576];
- let size = if let Ok(val) = br.peek_buf(&mut buf) { val } else {
- println!("cannot read any data");
- return DemuxerObject::None;
- };
- let mut pname = "";
-
- for pinfo in reg.pkt_reg.iter() {
- let mut packetiser = (pinfo.get_packetiser)();
- packetiser.add_data(&buf[..size]);
- if packetiser.parse_stream(0).is_ok() {
- pname = pinfo.name;
- break;
- }
- }
- if !pname.is_empty() {
- if print_info {
- println!("found raw stream of type {} for {}", pname, name);
- }
- let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
- let rctx = SelfBorrow::new(br, |br_| {
- unsafe {
- let mut packetiser = (pcreate)();
- packetiser.add_data(&buf[..size]);
- let stream = packetiser.parse_stream(0).unwrap();
- packetiser.reset();
- RawStreamCtx::new(stream, packetiser, (*br_).as_mut())
- }
- });
- DemuxerObject::RawStream(rctx)
- } else {
- DemuxerObject::None
- }
- }
- pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
- DemuxerObject::ImageSequence(isd)
- }
- pub fn is_none(&self) -> bool {
- matches!(*self, DemuxerObject::None)
- }
- pub fn get_duration(&self) -> u64 {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_duration(),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_duration(),
- DemuxerObject::RawStream(ref ctx) => {
- NATimeInfo::rescale_ts(ctx.get_object().stream.duration, ctx.get_object().stream.tb_num, ctx.get_object().stream.tb_den, 1, 1000)
- },
- _ => 0,
- }
- }
- pub fn get_num_streams(&self) -> usize {
- match *self {
- DemuxerObject::None => 0,
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_num_streams(),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_num_streams(),
- DemuxerObject::RawStream(_) => 1,
- DemuxerObject::ImageSequence(_) => 1,
- }
- }
- pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream(idx),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream(idx),
- DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.get_object().stream.clone()),
- DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
- _ => None,
- }
- }
- /*pub fn get_streams(&self) -> StreamIter {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_streams(),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_streams(),
- DemuxerObject::RawStream(ref ctx) => ctx.get_object().sm.iter(),
- DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
- _ => unreachable!(),
- }
- }*/
- pub fn get_stream_manager(&self) -> &StreamManager {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream_manager(),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream_manager(),
- DemuxerObject::RawStream(ref ctx) => &ctx.get_object().sm,
- DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
- _ => unreachable!(),
- }
- }
- pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
- match *self {
- DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().get_frame(),
- DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
- let dmx = dmx.get_object_mut();
- loop {
- let mut has_some = false;
- for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
- if let Some(ref mut pkts) = p {
- match pkts.get_packet(stream.clone()) {
- Ok(Some(pkt)) => return Ok(pkt),
- Ok(None) | Err(DecoderError::ShortData) => {
- if *eof {
- *p = None;
- }
- },
- Err(err) => {
- println!("packetisation error {:?}", err);
- return Err(DemuxerError::InvalidData);
- }
- };
- has_some |= p.is_some();
- }
- }
- if !has_some {
- return Err(DemuxerError::EOF);
- }
- if let Ok(data) = dmx.get_data() {
- let id = data.get_stream().get_id();
- for (i, stream) in dmx.get_streams().enumerate() {
- if stream.get_id() == id {
- if let Some(ref mut pkts) = packetisers[i] {
- pkts.add_data(&data.get_buffer());
- }
- break;
- }
- }
- } else {
- *eof = true;
- }
- }
- },
- DemuxerObject::RawStream(ref mut ctx) => {
- let ctx = ctx.get_object_mut();
- let mut buf = [0; 65536];
- loop {
- match ctx.packetiser.get_packet(ctx.stream.clone()) {
- Ok(Some(mut packet)) => {
- if packet.get_pts().is_none() && packet.get_duration().is_some() {
- packet.ts.pts = Some(ctx.pts);
- }
- ctx.pts += packet.get_duration().unwrap_or(0);
- return Ok(packet);
- },
- Ok(None) => {},
- Err(DecoderError::ShortData) => {},
- _ => return Err(DemuxerError::InvalidData),
- };
- match ctx.br.read_buf_some(&mut buf) {
- Ok(size) => {
- ctx.packetiser.add_data(&buf[..size]);
- },
- Err(_) => {
- match ctx.packetiser.get_packet(ctx.stream.clone()) {
- Ok(Some(mut packet)) => {
- if packet.get_pts().is_none() && packet.get_duration().is_some() {
- packet.ts.pts = Some(ctx.pts);
- }
- ctx.pts += packet.get_duration().unwrap_or(0);
- return Ok(packet);
- },
- Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
- _ => return Err(DemuxerError::InvalidData),
- };
- },
- };
- }
- },
- DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
- _ => unreachable!(),
- }
- }
- pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
- match *self {
- DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().seek(seek_time),
- DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().seek(seek_time),
- DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
- _ => Err(DemuxerError::NotImplemented),
- }
- }
-}
-
-impl<'a> NAOptionHandler for DemuxerObject<'a> {
- fn get_supported_options(&self) -> &[NAOptionDefinition] {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().get_supported_options(),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_supported_options(),
- DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
- _ => &[],
- }
- }
- fn set_options(&mut self, options: &[NAOption]) {
- match *self {
- DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().set_options(options),
- DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().set_options(options),
- DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
- _ => {},
- }
- }
- fn query_option_value(&self, name: &str) -> Option<NAValue> {
- match *self {
- DemuxerObject::Normal(ref dmx) => dmx.get_object().query_option_value(name),
- DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().query_option_value(name),
- DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
- _ => None,
- }
- }
-}
-
-pub fn detect_tags(br: &mut dyn ByteIO) -> (bool, u64, Option<u64>) {
- let mut is_raw = false;
- let mut start = 0;
- let mut end = None;
-
- // check for ID3v{2-4}
- let mut buf = [0; 5];
- if br.peek_buf(&mut buf).is_err() {
- return (false, 0, None);
- }
- if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
- br.read_skip(6).unwrap();
- let mut size = 0;
- for _ in 0..4 {
- let b = br.read_byte().unwrap();
- if (b & 0x80) != 0 {
- println!("Invalid ID3 size");
- break;
- }
- size = (size << 7) | u64::from(b);
- }
- start = size + 10;
- is_raw = true;
- }
- // check for ID3v1
- br.seek(SeekFrom::End(-128)).unwrap();
- let off = br.tell();
- br.peek_buf(&mut buf[..3]).unwrap();
- if &buf[0..3] == b"TAG" {
- end = Some(off);
- }
- // check for APETAG
- let mut buf = [0; 8];
- if let Some(off) = end {
- br.seek(SeekFrom::Start(off - 32)).unwrap();
- } else {
- br.seek(SeekFrom::End(-32)).unwrap();
- }
- let off = br.tell();
- br.read_buf(&mut buf).unwrap();
- if &buf == b"APETAGEX" {
- let ver = br.read_u32le().unwrap();
- let size = u64::from(br.read_u32le().unwrap());
- let _items = br.read_u32le().unwrap();
- let flags = br.read_u32le().unwrap();
- if ver == 1000 || (flags & 0x80000000) == 0 {
- end = Some(off - size + 32);
- } else {
- end = Some(off - size);
- }
- }
-
- (is_raw, start, end)
-}
+++ /dev/null
-use nihav_core::frame::*;
-use nihav_core::demuxers::*;
-use std::fs::File;
-use std::io::BufReader;
-use std::io::Read;
-
-struct TemplateName {
- prefix: String,
- pad_size: usize,
- suffix: String,
- single: bool,
-}
-
-trait Deescape {
- fn deescape(&mut self);
-}
-
-impl Deescape for String {
- fn deescape(&mut self) {
- while let Some(idx) = self.find("%%") {
- self.remove(idx + 1);
- }
- }
-}
-
-impl TemplateName {
- fn new(name: &str) -> Self {
- let mut off = 0;
- let mut tmpl_start = 0;
- let mut tmpl_end = 0;
- let mut pad_size = 0;
- 'parse_loop:
- while let Some(idx) = name[off..].find('%') {
- let idx = idx + off;
- if idx + 1 == name.len() {
- break;
- }
- if name[idx + 1..].starts_with('%') { // escape, skip it
- off += 1;
- }
- if name[idx + 1..].starts_with('0') {
- if let Some(end_idx) = name[idx + 2..].find('d') {
- if let Ok(val) = name[idx + 2..][..end_idx].parse::<usize>() {
- if val <= 32 {
- tmpl_start = idx;
- pad_size = val;
- tmpl_end = idx + 2 + end_idx + 1;
- }
- }
- break 'parse_loop;
- }
- }
- if name[idx + 1..].starts_with('d') {
- tmpl_start = idx;
- tmpl_end = idx + 2;
- break;
- }
- off += idx;
- }
-
- if tmpl_end == 0 {
- let mut prefix = name.to_owned();
- prefix.deescape();
- Self {
- prefix,
- pad_size: 0,
- suffix: String::new(),
- single: true,
- }
- } else {
- let mut prefix = name[..tmpl_start].to_string();
- prefix.deescape();
- let mut suffix = name[tmpl_end..].to_string();
- suffix.deescape();
- Self {
- prefix, suffix, pad_size,
- single: false,
- }
- }
- }
- fn format<T: Sized+ToString>(&self, id: T) -> String {
- let mut number = id.to_string();
- while number.len() < self.pad_size {
- number.insert(0, '0');
- }
- let mut fname = String::with_capacity(self.prefix.len() + number.len() + self.suffix.len());
- fname.push_str(&self.prefix);
- fname.push_str(&number);
- fname.push_str(&self.suffix);
- fname
- }
-}
-
-pub struct ImgSeqDemuxer {
- pub stream: NAStreamRef,
- pub sm: StreamManager,
- cur_frame: u64,
- template: TemplateName,
- pgmyuv: bool,
-}
-
-impl ImgSeqDemuxer {
- fn new(stream: NAStreamRef, cur_frame: u64, template: TemplateName, pgmyuv: bool) -> Self {
- let mut sm = StreamManager::new();
- sm.add_stream_ref(stream.clone());
- Self {
- stream, sm, cur_frame, template, pgmyuv,
- }
- }
- pub fn seek(&mut self, time: NATimePoint) -> DemuxerResult<()> {
- self.cur_frame = match time {
- NATimePoint::None => return Ok(()),
- NATimePoint::Milliseconds(ms) => NATimeInfo::rescale_ts(ms, 1, 1000, self.stream.tb_num, self.stream.tb_den),
- NATimePoint::PTS(pts) => pts,
- };
- Ok(())
- }
- pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
- if self.cur_frame > 0 && self.template.single {
- return Err(DemuxerError::EOF);
- }
- let fname = self.template.format(self.cur_frame);
- if let Ok(file) = File::open(fname.as_str()) {
- let mut file = BufReader::new(file);
- let vinfo = read_pnm_header(&mut file, self.pgmyuv)?;
- let pkt_size = if vinfo.format.model.is_yuv() && vinfo.format.components == 3 {
- vinfo.width * (vinfo.height * 3 / 2) * if vinfo.format.get_max_depth() > 8 { 2 } else { 1 }
- } else {
- vinfo.width * vinfo.height * usize::from(vinfo.format.components)
- };
- let mut buf = vec![0; pkt_size];
- file.read_exact(&mut buf).map_err(|_| DemuxerError::IOError)?;
- let ts = NATimeInfo::new(Some(self.cur_frame), None, None, self.stream.tb_num, self.stream.tb_den);
- let pkt = NAPacket::new(self.stream.clone(), ts, true, buf);
- self.cur_frame += 1;
- Ok(pkt)
- } else {
- Err(DemuxerError::EOF)
- }
- }
-}
-
-impl NAOptionHandler for ImgSeqDemuxer {
- fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
- fn set_options(&mut self, _options: &[NAOption]) {}
- fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
-}
-
-pub struct ImgSeqDemuxerCreator<'a> {
- name: &'a str,
- start: Option<u64>,
- pgmyuv: bool,
- tb_num: u32,
- tb_den: u32,
-}
-
-impl<'a> ImgSeqDemuxerCreator<'a> {
- pub fn new(name: &'a str) -> Self {
- Self {
- name,
- start: None,
- pgmyuv: false,
- tb_num: 1,
- tb_den: 25,
- }
- }
- pub fn open(&mut self) -> DemuxerResult<ImgSeqDemuxer> {
- let template = TemplateName::new(self.name);
-
- let fname = template.format(self.start.unwrap_or(0));
-
- if let Ok(file) = File::open(fname.as_str()) {
- let mut file = BufReader::new(file);
- let vinfo = read_pnm_header(&mut file, self.pgmyuv)?;
- let cinfo = NACodecInfo::new("rawvideo", NACodecTypeInfo::Video(vinfo), None);
- let stream = NAStream::new(StreamType::Video, 0, cinfo, self.tb_num, self.tb_den, 0).into_ref();
- return Ok(ImgSeqDemuxer::new(stream, self.start.unwrap_or(0), template, self.pgmyuv));
- }
-
- // if start is not given, try also starting from one
- if self.start.is_none() {
- let new_start = 1;
- let fname = template.format(new_start);
- if let Ok(file) = File::open(fname.as_str()) {
- let mut file = BufReader::new(file);
- let vinfo = read_pnm_header(&mut file, self.pgmyuv)?;
- let cinfo = NACodecInfo::new("rawvideo", NACodecTypeInfo::Video(vinfo), None);
- let stream = NAStream::new(StreamType::Video, 0, cinfo, self.tb_num, self.tb_den, 0).into_ref();
- return Ok(ImgSeqDemuxer::new(stream, new_start, template, self.pgmyuv));
- }
- }
-
- Err(DemuxerError::NoSuchInput)
- }
-}
-
-const IMGSEQ_OPTIONS: &[NAOptionDefinition] = &[
- NAOptionDefinition {
- name: "start", description: "start frame number",
- opt_type: NAOptionDefinitionType::Int(Some(0), None) },
- NAOptionDefinition {
- name: "pgmyuv", description: "Input is in PGMYUV format",
- opt_type: NAOptionDefinitionType::Bool },
- NAOptionDefinition {
- name: "tb_num", description: "timebase numerator",
- opt_type: NAOptionDefinitionType::Int(Some(1), Some(1000000)) },
- NAOptionDefinition {
- name: "tb_den", description: "timebase denominator",
- opt_type: NAOptionDefinitionType::Int(Some(1), Some(1000000)) },
-];
-
-impl<'a> NAOptionHandler for ImgSeqDemuxerCreator<'a> {
- fn get_supported_options(&self) -> &[NAOptionDefinition] { IMGSEQ_OPTIONS }
- fn set_options(&mut self, options: &[NAOption]) {
- for option in options.iter() {
- for opt_def in IMGSEQ_OPTIONS.iter() {
- if opt_def.check(option).is_ok() {
- match (option.name, &option.value) {
- ("start", NAValue::Int(intval)) => {
- self.start = Some(*intval as u64);
- },
- ("pgmyuv", NAValue::Bool(bval)) => {
- self.pgmyuv = *bval;
- },
- ("tb_num", NAValue::Int(intval)) => {
- self.tb_num = *intval as u32;
- },
- ("tb_den", NAValue::Int(intval)) => {
- self.tb_den = *intval as u32;
- },
- _ => {},
- }
- }
- }
- }
- }
- fn query_option_value(&self, name: &str) -> Option<NAValue> {
- match name {
- "start" => Some(NAValue::Int(self.start.unwrap_or(0) as i64)),
- "pgmyuv" => Some(NAValue::Bool(self.pgmyuv)),
- "tb_num" => Some(NAValue::Int(self.tb_num as i64)),
- "tb_den" => Some(NAValue::Int(self.tb_den as i64)),
- _ => None,
- }
- }
-}
-
-fn read_pnm_header(file: &mut BufReader<File>, pgmyuv: bool) -> DemuxerResult<NAVideoInfo> {
- let mut br = FileReader::new_read(file);
-
- let mut magic = [0; 2];
- br.read_buf(&mut magic)?;
- if magic[0] != b'P' { return Err(DemuxerError::InvalidData); }
- match magic[1] {
- b'4' | // PBM, PBM ASCII
- b'1' => return Err(DemuxerError::NotImplemented),
- b'5' => { // PGM
- },
- b'2' => return Err(DemuxerError::NotImplemented), // PGM ASCII
- b'6' => { // PPM
- },
- b'3' => return Err(DemuxerError::NotImplemented), // PPM ASCII
- _ => return Err(DemuxerError::InvalidData),
- };
- if br.read_byte()? != b'\n' { return Err(DemuxerError::InvalidData); }
- let w = read_number(&mut br)?;
- let h = read_number(&mut br)?;
- let maxval = if matches!(magic[1], b'4' | b'1') { 1 } else { read_number(&mut br)? };
- if maxval > 65535 || (maxval & (maxval + 1)) != 0 { return Err(DemuxerError::InvalidData); }
- let bits = maxval.count_ones() as u8;
-
- let mut vinfo = NAVideoInfo::new(w, h, false, RGB24_FORMAT);
- match magic[1] {
- b'5' | b'2' if !pgmyuv => {
- vinfo.format = NAPixelFormaton {
- model: ColorModel::YUV(YUVSubmodel::YUVJ),
- components: 1,
- comp_info: [Some(NAPixelChromaton{h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 0, next_elem: 1}), None, None, None, None],
- elem_size: 1,
- be: true,
- alpha: false,
- palette: false,
- };
- vinfo.bits = bits;
- },
- b'5' | b'2' => {
- if ((w & 1) != 0) || ((h % 3) != 0) { return Err(DemuxerError::InvalidData); }
- vinfo.format = YUV420_FORMAT;
- vinfo.height = h * 2 / 3;
- vinfo.bits = bits * 3 / 2;
- },
- b'6' | b'3' => {
- vinfo.format = RGB24_FORMAT;
- vinfo.bits = bits;
- },
- _ => unreachable!(),
- };
- if bits != 8 {
- for chr in vinfo.format.comp_info.iter_mut().flatten() {
- chr.depth = bits;
- if bits > 8 {
- chr.next_elem = 2;
- }
- }
- if bits > 8 {
- vinfo.format.elem_size <<= 1;
- }
- }
-
- Ok(vinfo)
-}
-
-fn read_number(br: &mut dyn ByteIO) -> DemuxerResult<usize> {
- let mut val = 0;
- loop {
- let c = br.read_byte()?;
- match c {
- b'0'..=b'9' => {
- if val > 1048576 {
- return Err(DemuxerError::InvalidData);
- }
- val = val * 10 + usize::from(c - b'0');
- },
- b' ' | b'\n' => break,
- _ => return Err(DemuxerError::InvalidData),
- };
- }
- Ok(val)
-}
projects / nihav-encoder.git / commitdiff