mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-12-31 14:28:45 +00:00
fmp4mux: Add support to write edts to handle audio priming
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1434>
This commit is contained in:
Thibault Saunier
GStreamer Marge Bot
parent
54bc7a898e
commit
e630aab769
7 changed files with 516 additions and 138 deletions
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@ -2425,6 +2425,18 @@
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"type": "guint",
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"writable": true
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},
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"write-edts-mode": {
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"blurb": "Mode for writing EDTS, when in auto mode, edts written only for non-live streams.",
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"conditionally-available": false,
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"construct": false,
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"construct-only": false,
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"controllable": false,
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"default": "auto (0)",
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"mutable": "ready",
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"readable": true,
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"type": "GstFMP4MuxWriteEdtsMode",
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"writable": true
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},
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"write-mehd": {
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"blurb": "Write movie extends header box with the duration at the end of the stream (needs a header-update-mode enabled)",
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"conditionally-available": false,
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@ -2516,6 +2528,26 @@
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"writable": true
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}
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}
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},
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"GstFMP4MuxWriteEdtsMode": {
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"kind": "enum",
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"values": [
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{
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"desc": "Auto",
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"name": "auto",
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"value": "0"
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},
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{
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"desc": "Always",
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"name": "always",
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"value": "1"
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},
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{
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"desc": "Never",
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"name": "never",
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"value": "2"
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}
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]
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}
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},
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"package": "gst-plugin-fmp4",
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@ -6,6 +6,7 @@
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//
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// SPDX-License-Identifier: MPL-2.0
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use crate::fmp4mux::imp::CAT;
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use gst::prelude::*;
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use anyhow::{anyhow, bail, Context, Error};
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@ -555,6 +556,35 @@ struct TrackReference {
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track_ids: Vec<u32>,
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}
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fn write_edts(v: &mut Vec<u8>, stream: &super::HeaderStream) -> Result<(), Error> {
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write_full_box(v, b"elst", FULL_BOX_VERSION_1, 0, |v| write_elst(v, stream))?;
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Ok(())
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}
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fn write_elst(v: &mut Vec<u8>, stream: &super::HeaderStream) -> Result<(), Error> {
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// Entry count
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v.extend((stream.elst_infos.len() as u32).to_be_bytes());
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for elst_info in &stream.elst_infos {
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v.extend(
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elst_info
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.duration
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.expect("Should have been set by `get_elst_infos`")
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.to_be_bytes(),
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);
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// Media time
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v.extend(elst_info.start.to_be_bytes());
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// Media rate
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v.extend(1u16.to_be_bytes());
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v.extend(0u16.to_be_bytes());
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}
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Ok(())
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}
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fn write_trak(
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v: &mut Vec<u8>,
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cfg: &super::HeaderConfiguration,
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@ -571,10 +601,13 @@ fn write_trak(
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|v| write_tkhd(v, cfg, idx, stream, creation_time),
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)?;
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// TODO: write edts if necessary: for audio tracks to remove initialization samples
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// TODO: write edts optionally for negative DTS instead of offsetting the DTS
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write_box(v, b"mdia", |v| write_mdia(v, cfg, stream, creation_time))?;
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if !stream.elst_infos.is_empty() {
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if let Err(e) = write_edts(v, stream) {
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gst::warning!(CAT, "Failed to write edts: {e}");
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}
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}
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if !references.is_empty() {
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write_box(v, b"tref", |v| write_tref(v, cfg, references))?;
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@ -12,6 +12,7 @@ use gst::subclass::prelude::*;
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use gst_base::prelude::*;
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use gst_base::subclass::prelude::*;
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use anyhow::Context;
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use std::collections::BTreeSet;
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use std::collections::VecDeque;
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use std::mem;
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@ -90,7 +91,7 @@ fn utc_time_to_running_time(
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.and_then(|res| res.positive())
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}
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static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
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pub static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
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gst::DebugCategory::new(
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"fmp4mux",
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gst::DebugColorFlags::empty(),
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@ -234,6 +235,88 @@ struct Stream {
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running_time_utc_time_mapping: Option<(gst::Signed<gst::ClockTime>, gst::ClockTime)>,
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extra_header_data: Option<Vec<u8>>,
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/// Earliest PTS of the whole stream
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earliest_pts: Option<gst::ClockTime>,
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/// Current end PTS of the whole stream
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end_pts: Option<gst::ClockTime>,
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/// Edit list entries for this stream.
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elst_infos: Vec<super::ElstInfo>,
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}
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impl Stream {
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fn get_elst_infos(&self) -> Result<Vec<super::ElstInfo>, anyhow::Error> {
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let mut elst_infos = self.elst_infos.clone();
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let timescale = self.timescale();
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let earliest_pts = self.earliest_pts.unwrap_or(gst::ClockTime::ZERO);
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let end_pts = self
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.end_pts
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.unwrap_or(gst::ClockTime::from_nseconds(u64::MAX - 1));
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let mut iter = elst_infos.iter_mut().peekable();
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while let Some(&mut ref mut elst_info) = iter.next() {
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if elst_info.duration.unwrap_or(0) == 0 {
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elst_info.duration = if let Some(next) = iter.peek_mut() {
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let duration = next.start - elst_info.start;
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if duration < 0 {
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anyhow::bail!("Invalid edit list entry, negative duration");
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}
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Some(duration as u64)
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} else {
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Some(
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(end_pts.checked_sub(earliest_pts))
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.expect("stream end < stream start?")
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.nseconds()
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.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
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.context("too big track duration")?,
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)
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}
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}
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}
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Ok(elst_infos)
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}
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fn timescale(&self) -> u32 {
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let trak_timescale = { self.sinkpad.imp().state.lock().unwrap().trak_timescale };
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if trak_timescale > 0 {
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return trak_timescale;
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}
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let s = self.caps.structure(0).unwrap();
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if let Ok(fps) = s.get::<gst::Fraction>("framerate") {
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if fps.numer() == 0 {
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return 10_000;
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}
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if fps.denom() != 1 && fps.denom() != 1001 {
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if let Some(fps) = (fps.denom() as u64)
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.nseconds()
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.mul_div_round(1_000_000_000, fps.numer() as u64)
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.and_then(gst_video::guess_framerate)
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{
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return (fps.numer() as u32)
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.mul_div_round(100, fps.denom() as u32)
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.unwrap_or(10_000);
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}
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}
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if fps.denom() == 1001 {
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fps.numer() as u32
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} else {
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(fps.numer() as u32)
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.mul_div_round(100, fps.denom() as u32)
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.unwrap_or(10_000)
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}
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} else if let Ok(rate) = s.get::<i32>("rate") {
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rate as u32
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} else {
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10_000
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}
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}
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}
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#[derive(Default)]
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@ -295,6 +378,68 @@ pub(crate) struct FMP4Mux {
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}
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impl FMP4Mux {
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fn add_elst_info(
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&self,
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buffer: &PreQueuedBuffer,
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stream: &mut Stream,
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) -> Result<(), anyhow::Error> {
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if let Some(cmeta) = buffer.buffer.meta::<gst_audio::AudioClippingMeta>() {
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let timescale = stream
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.caps
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.structure(0)
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.unwrap()
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.get::<i32>("rate")
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.unwrap_or_else(|_| stream.timescale() as i32);
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let gstclocktime_to_samples = move |v: gst::ClockTime| {
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v.nseconds()
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.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
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.context("Invalid start in the AudioClipMeta")
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};
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let generic_to_samples = move |t| -> Result<Option<u64>, anyhow::Error> {
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if let gst::GenericFormattedValue::Default(Some(v)) = t {
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let v = v.into();
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Ok(Some(v).filter(|x| x != &0u64))
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} else if let gst::GenericFormattedValue::Time(Some(v)) = t {
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Ok(Some(gstclocktime_to_samples(v)?))
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} else {
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Ok(None)
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}
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};
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let start = generic_to_samples(cmeta.start())?;
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let end = generic_to_samples(cmeta.end())?;
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if end.is_none() && start.is_none() {
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return Err(anyhow::anyhow!(
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"No start or end time in `default` format in the AudioClipingMeta"
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));
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}
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let start = if let Some(start) = generic_to_samples(cmeta.start())? {
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start + gstclocktime_to_samples(buffer.pts)?
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} else {
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0
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};
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let duration = if let Some(e) = end {
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Some(
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gstclocktime_to_samples(buffer.end_pts)?
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.checked_sub(e)
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.context("Invalid end in the AudioClipMeta")?,
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)
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} else {
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None
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};
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stream.elst_infos.push(super::ElstInfo {
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start: start as i64,
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duration,
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});
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}
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Ok(())
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}
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/// Checks if a buffer is valid according to the stream configuration.
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fn check_buffer(buffer: &gst::BufferRef, stream: &Stream) -> Result<(), gst::FlowError> {
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let Stream {
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@ -400,6 +545,17 @@ impl FMP4Mux {
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gst::ClockTime::ZERO
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});
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if stream
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.earliest_pts
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.map_or(true, |earliest_pts| earliest_pts > pts)
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{
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stream.end_pts = Some(pts);
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}
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if stream.end_pts.opt_lt(end_pts).unwrap_or(true) {
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stream.end_pts = Some(end_pts);
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}
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let (dts, end_dts) = if !stream.delta_frames.requires_dts() {
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(None, None)
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} else {
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@ -665,7 +821,13 @@ impl FMP4Mux {
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assert!(stream.running_time_utc_time_mapping.is_some());
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}
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stream.pre_queue.pop_front().unwrap()
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let buffer = stream.pre_queue.pop_front().unwrap();
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if let Err(err) = self.add_elst_info(&buffer, stream) {
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gst::error!(CAT, "Failed to add elst info: {err:#}");
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}
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buffer
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}
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// Caps/tag changes are allowed only in case that the
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@ -2083,8 +2245,6 @@ impl FMP4Mux {
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);
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for (idx, stream) in state.streams.iter_mut().enumerate() {
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let stream_settings = stream.sinkpad.imp().settings.lock().unwrap().clone();
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let gops = self.drain_buffers_one_stream(
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settings,
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stream,
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@ -2163,6 +2323,7 @@ impl FMP4Mux {
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}
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}
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let trak_timescale = stream.sinkpad.imp().state.lock().unwrap().trak_timescale;
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if gops.is_empty() {
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gst::info!(CAT, obj = stream.sinkpad, "Draining no buffers",);
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@ -2171,7 +2332,7 @@ impl FMP4Mux {
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caps: stream.caps.clone(),
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start_time: None,
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delta_frames: stream.delta_frames,
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trak_timescale: stream_settings.trak_timescale,
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trak_timescale,
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},
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VecDeque::new(),
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));
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@ -2222,7 +2383,7 @@ impl FMP4Mux {
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caps: stream.caps.clone(),
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start_time: None,
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delta_frames: stream.delta_frames,
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trak_timescale: stream_settings.trak_timescale,
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trak_timescale,
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},
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VecDeque::new(),
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));
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@ -2270,7 +2431,7 @@ impl FMP4Mux {
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caps: stream.caps.clone(),
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start_time: Some(start_time),
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delta_frames: stream.delta_frames,
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trak_timescale: stream_settings.trak_timescale,
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trak_timescale,
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},
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buffers,
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));
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@ -2860,6 +3021,9 @@ impl FMP4Mux {
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current_position: gst::ClockTime::ZERO,
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running_time_utc_time_mapping: None,
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extra_header_data: None,
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earliest_pts: None,
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end_pts: None,
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elst_infos: Vec::new(),
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});
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}
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@ -2923,11 +3087,19 @@ impl FMP4Mux {
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let streams = state
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.streams
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.iter()
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.map(|s| super::HeaderStream {
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trak_timescale: s.sinkpad.imp().settings.lock().unwrap().trak_timescale,
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delta_frames: s.delta_frames,
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caps: s.caps.clone(),
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extra_header_data: s.extra_header_data.clone(),
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.map(|s| {
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let trak_timescale = { s.sinkpad.imp().settings.lock().unwrap().trak_timescale };
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super::HeaderStream {
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trak_timescale,
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delta_frames: s.delta_frames,
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caps: s.caps.clone(),
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extra_header_data: s.extra_header_data.clone(),
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elst_infos: s.get_elst_infos().unwrap_or_else(|e| {
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gst::error!(CAT, "Could not prepare edit lists: {e:?}");
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Vec::new()
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}),
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}
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})
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.collect::<Vec<_>>();
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@ -3598,6 +3770,12 @@ impl AggregatorImpl for FMP4Mux {
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fn start(&self) -> Result<(), gst::ErrorMessage> {
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gst::trace!(CAT, imp = self, "Starting");
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for pad in self.obj().sink_pads() {
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let pad = pad.downcast_ref::<super::FMP4MuxPad>().unwrap().imp();
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pad.state.lock().unwrap().trak_timescale = pad.settings.lock().unwrap().trak_timescale;
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}
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self.parent_start()?;
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// For non-single-stream variants configure a default segment that allows for negative
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@ -4239,9 +4417,16 @@ struct PadSettings {
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trak_timescale: u32,
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}
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#[derive(Default, Clone)]
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struct PadState {
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// the selected trak_timescale
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trak_timescale: u32,
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}
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#[derive(Default)]
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pub(crate) struct FMP4MuxPad {
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settings: Mutex<PadSettings>,
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state: Mutex<PadState>,
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}
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#[glib::object_subclass]
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|
|
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@ -169,6 +169,12 @@ pub(crate) struct HeaderConfiguration {
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start_utc_time: Option<u64>,
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}
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#[derive(Debug, Clone)]
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pub(crate) struct ElstInfo {
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start: i64,
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duration: Option<u64>,
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}
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#[derive(Debug)]
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pub(crate) struct HeaderStream {
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/// Caps of this stream
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@ -182,6 +188,9 @@ pub(crate) struct HeaderStream {
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// More data to be included in the fragmented stream header
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extra_header_data: Option<Vec<u8>>,
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/// Edit list clipping information
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elst_infos: Vec<ElstInfo>,
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}
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#[derive(Debug)]
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|
|
|
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|
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@ -225,50 +225,12 @@ fn write_moov(v: &mut Vec<u8>, header: &super::Header) -> Result<(), Error> {
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Ok(())
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}
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fn stream_to_timescale(stream: &super::Stream) -> u32 {
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if stream.trak_timescale > 0 {
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stream.trak_timescale
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} else {
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let s = stream.caps.structure(0).unwrap();
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if let Ok(fps) = s.get::<gst::Fraction>("framerate") {
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if fps.numer() == 0 {
|
||||
return 10_000;
|
||||
}
|
||||
|
||||
if fps.denom() != 1 && fps.denom() != 1001 {
|
||||
if let Some(fps) = (fps.denom() as u64)
|
||||
.nseconds()
|
||||
.mul_div_round(1_000_000_000, fps.numer() as u64)
|
||||
.and_then(gst_video::guess_framerate)
|
||||
{
|
||||
return (fps.numer() as u32)
|
||||
.mul_div_round(100, fps.denom() as u32)
|
||||
.unwrap_or(10_000);
|
||||
}
|
||||
}
|
||||
|
||||
if fps.denom() == 1001 {
|
||||
fps.numer() as u32
|
||||
} else {
|
||||
(fps.numer() as u32)
|
||||
.mul_div_round(100, fps.denom() as u32)
|
||||
.unwrap_or(10_000)
|
||||
}
|
||||
} else if let Ok(rate) = s.get::<i32>("rate") {
|
||||
rate as u32
|
||||
} else {
|
||||
10_000
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn header_to_timescale(header: &super::Header) -> u32 {
|
||||
if header.movie_timescale > 0 {
|
||||
header.movie_timescale
|
||||
} else {
|
||||
// Use the reference track timescale
|
||||
stream_to_timescale(&header.streams[0])
|
||||
header.streams[0].timescale
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -352,7 +314,7 @@ fn write_trak(
|
|||
if !references.is_empty() {
|
||||
write_box(v, b"tref", |v| write_tref(v, header, references))?;
|
||||
}
|
||||
write_box(v, b"edts", |v| write_edts(v, header, stream))?;
|
||||
write_box(v, b"edts", |v| write_edts(v, stream))?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -480,7 +442,7 @@ fn write_mdhd(
|
|||
stream: &super::Stream,
|
||||
creation_time: u64,
|
||||
) -> Result<(), Error> {
|
||||
let timescale = stream_to_timescale(stream);
|
||||
let timescale = stream.timescale;
|
||||
|
||||
// Creation time
|
||||
v.extend(creation_time.to_be_bytes());
|
||||
|
|
@ -1454,7 +1416,7 @@ fn write_stts(
|
|||
_header: &super::Header,
|
||||
stream: &super::Stream,
|
||||
) -> Result<(), Error> {
|
||||
let timescale = stream_to_timescale(stream);
|
||||
let timescale = stream.timescale;
|
||||
|
||||
let entry_count_position = v.len();
|
||||
// Entry count, rewritten in the end
|
||||
|
|
@ -1508,7 +1470,7 @@ fn write_ctts(
|
|||
stream: &super::Stream,
|
||||
version: u8,
|
||||
) -> Result<(), Error> {
|
||||
let timescale = stream_to_timescale(stream);
|
||||
let timescale = stream.timescale;
|
||||
|
||||
let entry_count_position = v.len();
|
||||
// Entry count, rewritten in the end
|
||||
|
|
@ -1578,7 +1540,7 @@ fn write_cslg(
|
|||
_header: &super::Header,
|
||||
stream: &super::Stream,
|
||||
) -> Result<(), Error> {
|
||||
let timescale = stream_to_timescale(stream);
|
||||
let timescale = stream.timescale;
|
||||
|
||||
let (min_ctts, max_ctts) = stream
|
||||
.chunks
|
||||
|
|
@ -1794,82 +1756,31 @@ fn write_tref(
|
|||
Ok(())
|
||||
}
|
||||
|
||||
fn write_edts(
|
||||
v: &mut Vec<u8>,
|
||||
header: &super::Header,
|
||||
stream: &super::Stream,
|
||||
) -> Result<(), Error> {
|
||||
write_full_box(v, b"elst", FULL_BOX_VERSION_1, 0, |v| {
|
||||
write_elst(v, header, stream)
|
||||
})?;
|
||||
fn write_edts(v: &mut Vec<u8>, stream: &super::Stream) -> Result<(), Error> {
|
||||
write_full_box(v, b"elst", FULL_BOX_VERSION_1, 0, |v| write_elst(v, stream))?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn write_elst(
|
||||
v: &mut Vec<u8>,
|
||||
header: &super::Header,
|
||||
stream: &super::Stream,
|
||||
) -> Result<(), Error> {
|
||||
// In movie header timescale
|
||||
let timescale = header_to_timescale(header);
|
||||
fn write_elst(v: &mut Vec<u8>, stream: &super::Stream) -> Result<(), Error> {
|
||||
// Entry count
|
||||
v.extend((stream.elst_infos.len() as u32).to_be_bytes());
|
||||
|
||||
let min_earliest_pts = header.streams.iter().map(|s| s.earliest_pts).min().unwrap();
|
||||
for elst_info in &stream.elst_infos {
|
||||
v.extend(
|
||||
elst_info
|
||||
.duration
|
||||
.expect("Should have been set by `get_elst_infos`")
|
||||
.to_be_bytes(),
|
||||
);
|
||||
|
||||
if min_earliest_pts != stream.earliest_pts {
|
||||
let gap = (stream.earliest_pts - min_earliest_pts)
|
||||
.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big gap")?;
|
||||
// Media time
|
||||
v.extend(elst_info.start.to_be_bytes());
|
||||
|
||||
if gap > 0 {
|
||||
// Entry count
|
||||
v.extend(2u32.to_be_bytes());
|
||||
|
||||
// First entry for the gap
|
||||
|
||||
// Edit duration
|
||||
v.extend(gap.to_be_bytes());
|
||||
|
||||
// Media time
|
||||
v.extend((-1i64).to_be_bytes());
|
||||
|
||||
// Media rate
|
||||
v.extend(1u16.to_be_bytes());
|
||||
v.extend(0u16.to_be_bytes());
|
||||
} else {
|
||||
// Entry count
|
||||
v.extend(1u32.to_be_bytes());
|
||||
}
|
||||
} else {
|
||||
// Entry count
|
||||
v.extend(1u32.to_be_bytes());
|
||||
// Media rate
|
||||
v.extend(1u16.to_be_bytes());
|
||||
v.extend(0u16.to_be_bytes());
|
||||
}
|
||||
|
||||
// Edit duration
|
||||
let duration = (stream.end_pts - stream.earliest_pts)
|
||||
.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big track duration")?;
|
||||
v.extend(duration.to_be_bytes());
|
||||
|
||||
// Media time
|
||||
if let Some(start_dts) = stream.start_dts {
|
||||
let shift = (gst::Signed::Positive(stream.earliest_pts) - start_dts)
|
||||
.nseconds()
|
||||
.positive()
|
||||
.unwrap_or(0)
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big track duration")?;
|
||||
|
||||
v.extend(shift.to_be_bytes());
|
||||
} else {
|
||||
v.extend(0u64.to_be_bytes());
|
||||
}
|
||||
|
||||
// Media rate
|
||||
v.extend(1u16.to_be_bytes());
|
||||
v.extend(0u16.to_be_bytes());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
//
|
||||
// SPDX-License-Identifier: MPL-2.0
|
||||
|
||||
use anyhow::{anyhow, Context};
|
||||
use gst::glib;
|
||||
use gst::prelude::*;
|
||||
use gst::subclass::prelude::*;
|
||||
|
|
@ -131,6 +132,10 @@ struct Stream {
|
|||
|
||||
/// Earliest PTS.
|
||||
earliest_pts: Option<gst::ClockTime>,
|
||||
|
||||
/// Edit list entries for this stream.
|
||||
elst_infos: Vec<super::ElstInfo>,
|
||||
|
||||
/// Current end PTS.
|
||||
end_pts: Option<gst::ClockTime>,
|
||||
|
||||
|
|
@ -143,6 +148,122 @@ struct Stream {
|
|||
orientation: Option<ImageOrientation>,
|
||||
}
|
||||
|
||||
impl Stream {
|
||||
fn get_elst_infos(
|
||||
&self,
|
||||
min_earliest_pts: gst::ClockTime,
|
||||
) -> Result<Vec<super::ElstInfo>, anyhow::Error> {
|
||||
let mut elst_infos = self.elst_infos.clone();
|
||||
let timescale = self.timescale();
|
||||
let earliest_pts = self
|
||||
.earliest_pts
|
||||
.expect("Streams without earliest_pts should have been skipped");
|
||||
let end_pts = self
|
||||
.end_pts
|
||||
.expect("Streams without end_pts should have been skipped");
|
||||
|
||||
// If no elst info were set, use the whole track
|
||||
if self.elst_infos.is_empty() {
|
||||
let start = if let Some(start_dts) = self.start_dts {
|
||||
((gst::Signed::Positive(earliest_pts) - start_dts)
|
||||
.nseconds()
|
||||
.positive()
|
||||
.unwrap_or(0)
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big track duration")?) as i64
|
||||
} else {
|
||||
0i64
|
||||
};
|
||||
|
||||
elst_infos.push(super::ElstInfo {
|
||||
start,
|
||||
duration: Some(
|
||||
(end_pts - earliest_pts)
|
||||
.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big track duration")?,
|
||||
),
|
||||
});
|
||||
}
|
||||
|
||||
// Add a gap at the beginning if needed
|
||||
if min_earliest_pts != earliest_pts {
|
||||
let gap_duration = (earliest_pts - min_earliest_pts)
|
||||
.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big gap")?;
|
||||
|
||||
if gap_duration > 0 {
|
||||
elst_infos.insert(
|
||||
0,
|
||||
super::ElstInfo {
|
||||
start: -1,
|
||||
duration: Some(gap_duration),
|
||||
},
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
let mut iter = elst_infos.iter_mut().peekable();
|
||||
while let Some(&mut ref mut elst_info) = iter.next() {
|
||||
if elst_info.duration.unwrap_or(0u64) == 0u64 {
|
||||
elst_info.duration = if let Some(next) = iter.peek_mut() {
|
||||
Some((next.start - elst_info.start) as u64)
|
||||
} else {
|
||||
Some(
|
||||
(end_pts - earliest_pts)
|
||||
.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("too big track duration")?,
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ok(elst_infos)
|
||||
}
|
||||
|
||||
fn timescale(&self) -> u32 {
|
||||
let trak_timescale = { self.sinkpad.imp().settings.lock().unwrap().trak_timescale };
|
||||
|
||||
if trak_timescale > 0 {
|
||||
return trak_timescale;
|
||||
}
|
||||
|
||||
let s = self.caps.structure(0).unwrap();
|
||||
|
||||
if let Ok(fps) = s.get::<gst::Fraction>("framerate") {
|
||||
if fps.numer() == 0 {
|
||||
return 10_000;
|
||||
}
|
||||
|
||||
if fps.denom() != 1 && fps.denom() != 1001 {
|
||||
if let Some(fps) = (fps.denom() as u64)
|
||||
.nseconds()
|
||||
.mul_div_round(1_000_000_000, fps.numer() as u64)
|
||||
.and_then(gst_video::guess_framerate)
|
||||
{
|
||||
return (fps.numer() as u32)
|
||||
.mul_div_round(100, fps.denom() as u32)
|
||||
.unwrap_or(10_000);
|
||||
}
|
||||
}
|
||||
|
||||
if fps.denom() == 1001 {
|
||||
fps.numer() as u32
|
||||
} else {
|
||||
(fps.numer() as u32)
|
||||
.mul_div_round(100, fps.denom() as u32)
|
||||
.unwrap_or(10_000)
|
||||
}
|
||||
} else if let Ok(rate) = s.get::<i32>("rate") {
|
||||
rate as u32
|
||||
} else {
|
||||
10_000
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
struct State {
|
||||
/// List of streams when the muxer was started.
|
||||
|
|
@ -200,6 +321,77 @@ impl MP4Mux {
|
|||
Ok(())
|
||||
}
|
||||
|
||||
fn add_elst_info(
|
||||
&self,
|
||||
buffer: &PendingBuffer,
|
||||
stream: &mut Stream,
|
||||
) -> Result<(), anyhow::Error> {
|
||||
let cmeta = if let Some(cmeta) = buffer.buffer.meta::<gst_audio::AudioClippingMeta>() {
|
||||
cmeta
|
||||
} else {
|
||||
return Ok(());
|
||||
};
|
||||
|
||||
let timescale = stream
|
||||
.caps
|
||||
.structure(0)
|
||||
.unwrap()
|
||||
.get::<i32>("rate")
|
||||
.unwrap_or_else(|_| stream.timescale() as i32);
|
||||
|
||||
let gstclocktime_to_samples = move |v: gst::ClockTime| {
|
||||
v.nseconds()
|
||||
.mul_div_round(timescale as u64, gst::ClockTime::SECOND.nseconds())
|
||||
.context("Invalid start in the AudioClipMeta")
|
||||
};
|
||||
|
||||
let generic_to_samples = move |t| -> Result<Option<u64>, anyhow::Error> {
|
||||
if let gst::GenericFormattedValue::Default(Some(v)) = t {
|
||||
let v: u64 = v.into();
|
||||
Ok(Some(v).filter(|x| x != &0u64))
|
||||
} else if let gst::GenericFormattedValue::Time(Some(v)) = t {
|
||||
Ok(Some(gstclocktime_to_samples(v)?))
|
||||
} else {
|
||||
Ok(None)
|
||||
}
|
||||
};
|
||||
|
||||
let start: Option<u64> = generic_to_samples(cmeta.start())?;
|
||||
let end: Option<u64> = generic_to_samples(cmeta.end())?;
|
||||
|
||||
if end.is_none() && start.is_none() {
|
||||
return Err(anyhow!(
|
||||
"No start or end time in `default` format in the AudioClipingMeta"
|
||||
));
|
||||
}
|
||||
|
||||
let start = if let Some(start) = generic_to_samples(cmeta.start())? {
|
||||
start + gstclocktime_to_samples(buffer.pts)?
|
||||
} else {
|
||||
0
|
||||
};
|
||||
let duration = if let Some(e) = end {
|
||||
Some(
|
||||
gstclocktime_to_samples(buffer.pts)?
|
||||
+ gstclocktime_to_samples(
|
||||
buffer
|
||||
.duration
|
||||
.context("No duration on buffer, we can't add edit list")?,
|
||||
)?
|
||||
- e,
|
||||
)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
stream.elst_infos.push(super::ElstInfo {
|
||||
start: start as i64,
|
||||
duration,
|
||||
});
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn peek_buffer(
|
||||
&self,
|
||||
sinkpad: &super::MP4MuxPad,
|
||||
|
|
@ -889,6 +1081,11 @@ impl MP4Mux {
|
|||
|
||||
let duration = buffer.duration.unwrap();
|
||||
let composition_time_offset = buffer.composition_time_offset;
|
||||
|
||||
if let Err(err) = self.add_elst_info(&buffer, stream) {
|
||||
gst::error!(CAT, "Failed to add elst info: {:#}", err);
|
||||
}
|
||||
|
||||
let mut buffer = buffer.buffer;
|
||||
|
||||
stream.queued_chunk_time += duration;
|
||||
|
|
@ -1018,6 +1215,7 @@ impl MP4Mux {
|
|||
queued_chunk_bytes: 0,
|
||||
start_dts: None,
|
||||
earliest_pts: None,
|
||||
elst_infos: Default::default(),
|
||||
end_pts: None,
|
||||
running_time_utc_time_mapping: None,
|
||||
extra_header_data: None,
|
||||
|
|
@ -1468,9 +1666,14 @@ impl AggregatorImpl for MP4Mux {
|
|||
state.mdat_size
|
||||
);
|
||||
|
||||
let min_earliest_pts = state
|
||||
.streams
|
||||
.iter()
|
||||
.filter_map(|s| s.earliest_pts)
|
||||
.min()
|
||||
.unwrap();
|
||||
let mut streams = Vec::with_capacity(state.streams.len());
|
||||
for stream in state.streams.drain(..) {
|
||||
let pad_settings = stream.sinkpad.imp().settings.lock().unwrap().clone();
|
||||
let (earliest_pts, end_pts) = match Option::zip(stream.earliest_pts, stream.end_pts)
|
||||
{
|
||||
Some(res) => res,
|
||||
|
|
@ -1480,10 +1683,14 @@ impl AggregatorImpl for MP4Mux {
|
|||
streams.push(super::Stream {
|
||||
caps: stream.caps.clone(),
|
||||
delta_frames: stream.delta_frames,
|
||||
trak_timescale: pad_settings.trak_timescale,
|
||||
start_dts: stream.start_dts,
|
||||
timescale: stream.timescale(),
|
||||
earliest_pts,
|
||||
end_pts,
|
||||
elst_infos: stream.get_elst_infos(min_earliest_pts).unwrap_or_else(|e| {
|
||||
gst::error!(CAT, "Could not prepare edit lists: {e:?}");
|
||||
|
||||
Vec::new()
|
||||
}),
|
||||
chunks: stream.chunks,
|
||||
extra_header_data: stream.extra_header_data.clone(),
|
||||
orientation: stream.orientation,
|
||||
|
|
|
|||
|
|
@ -172,6 +172,12 @@ pub(crate) struct Chunk {
|
|||
samples: Vec<Sample>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub(crate) struct ElstInfo {
|
||||
start: i64,
|
||||
duration: Option<u64>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub(crate) struct Stream {
|
||||
/// Caps of this stream
|
||||
|
|
@ -181,15 +187,7 @@ pub(crate) struct Stream {
|
|||
delta_frames: DeltaFrames,
|
||||
|
||||
/// Pre-defined trak timescale if not 0.
|
||||
trak_timescale: u32,
|
||||
|
||||
/// Start DTS
|
||||
///
|
||||
/// If this is negative then an edit list entry is needed to
|
||||
/// make all sample times positive.
|
||||
///
|
||||
/// This is `None` for streams that have no concept of DTS.
|
||||
start_dts: Option<gst::Signed<gst::ClockTime>>,
|
||||
timescale: u32,
|
||||
|
||||
/// Earliest PTS
|
||||
///
|
||||
|
|
@ -207,6 +205,9 @@ pub(crate) struct Stream {
|
|||
|
||||
/// Orientation from tags
|
||||
orientation: Option<ImageOrientation>,
|
||||
|
||||
/// Edit list clipping information
|
||||
elst_infos: Vec<ElstInfo>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
|
|
|
|||
Loading…
Reference in a new issue