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Set media stream as seekable only if the server supports range requests

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This commit is contained in:
Fernando Jiménez Moreno 2018-12-17 23:57:21 +01:00
parent 5112e0435c
commit c8806767a0
1 changed files with 19 additions and 7 deletions
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26
components/script/dom/htmlmediaelement.rs
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@ -710,13 +710,6 @@ impl HTMLMediaElement {
return;
}
// XXX(ferjm) Since we only support Blob for now it is fine to always set
// the stream type to StreamType::Seekable. Once we support MediaStream,
// this should be changed to also consider StreamType::Stream.
if let Err(e) = self.player.set_stream_type(StreamType::Seekable) {
eprintln!("Could not set stream type to Seekable. {:?}", e);
}
// Steps 1-2.
// Unapplicable, the `resource` variable already conveys which mode
// is in use.
@ -729,6 +722,20 @@ impl HTMLMediaElement {
Resource::Url(url) => {
// Step 4.remote.1.
if self.Preload() == "none" && !self.autoplaying.get() {
// We only set the stream type to Seekable in two cases:
//
// - If the url is a file:// url. Our network stack supports range requests for
// file:// urls.
// - If the url is an http(s):// url and we identify that the server supports
// range requests.
//
// In the remaining cases, we use the default Stream type.
if url.scheme() == "file" {
if let Err(e) = self.player.set_stream_type(StreamType::Seekable) {
warn!("Could not set stream type to Seekable. {:?}", e);
}
}
// Step 4.remote.1.1.
self.network_state.set(NetworkState::Idle);
@ -1691,6 +1698,11 @@ impl FetchResponseListener for HTMLMediaElementContext {
// header. Otherwise, we get it from the Content-Length header.
let content_length =
if let Some(content_range) = headers.typed_get::<ContentRange>() {
// The server supports range requests, so we can safely set the
// type of stream to Seekable.
if let Err(e) = elem.player.set_stream_type(StreamType::Seekable) {
warn!("Could not set stream type to Seekable. {:?}", e);
}
content_range.bytes_len()
} else if let Some(content_length) = headers.typed_get::<ContentLength>() {
Some(content_length.0)