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Add more specification step comments and update to the latest specification.
This commit is contained in:
Josh Matthews
parent
99f6fb34fc
commit
f16c05423c
2 changed files with 136 additions and 47 deletions
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@ -10,6 +10,7 @@ use dom::bindings::codegen::Bindings::HTMLMediaElementBinding::CanPlayTypeResult
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use dom::bindings::codegen::Bindings::HTMLMediaElementBinding::HTMLMediaElementConstants::*;
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use dom::bindings::codegen::Bindings::HTMLMediaElementBinding::HTMLMediaElementMethods;
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use dom::bindings::codegen::Bindings::MediaErrorBinding::MediaErrorConstants::*;
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use dom::bindings::codegen::Bindings::MediaErrorBinding::MediaErrorMethods;
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use dom::bindings::global::GlobalRef;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::{Root, MutNullableHeap, JS};
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@ -31,8 +32,8 @@ use script_thread::{Runnable, ScriptThread};
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use std::cell::Cell;
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use std::sync::{Arc, Mutex};
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use string_cache::Atom;
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use task_source::dom_manipulation::DOMManipulationTask;
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use task_source::TaskSource;
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use task_source::dom_manipulation::DOMManipulationTask;
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use time::{self, Timespec, Duration};
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use url::Url;
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use util::str::DOMString;
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@ -56,7 +57,6 @@ struct HTMLMediaElementContext {
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ignore_response: bool,
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}
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// https://html.spec.whatwg.org/multipage/#media-data-processing-steps-list
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impl AsyncResponseListener for HTMLMediaElementContext {
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// https://html.spec.whatwg.org/multipage/#media-data-processing-steps-list
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fn headers_available(&mut self, metadata: Result<Metadata, NetworkError>) {
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@ -87,14 +87,20 @@ impl AsyncResponseListener for HTMLMediaElementContext {
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let elem = self.elem.root();
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// https://html.spec.whatwg.org/multipage/#media-data-processing-steps-list
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// => "Once enough of the media data has been fetched to determine the duration..."
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if !self.have_metadata {
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//TODO: actually check if the payload contains the full metadata
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// Step 6
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elem.change_ready_state(HAVE_METADATA);
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self.have_metadata = true;
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} else {
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elem.change_ready_state(HAVE_CURRENT_DATA);
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}
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// https://html.spec.whatwg.org/multipage/#concept-media-load-resource step 4,
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// => "If mode is remote" step 2
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if time::get_time() > self.next_progress_event {
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elem.queue_fire_simple_event("progress");
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self.next_progress_event = time::get_time() + Duration::milliseconds(350);
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@ -105,6 +111,7 @@ impl AsyncResponseListener for HTMLMediaElementContext {
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fn response_complete(&mut self, status: Result<(), NetworkError>) {
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let elem = self.elem.root();
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// => "Once the entire media resource has been fetched..."
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if status.is_ok() {
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elem.change_ready_state(HAVE_ENOUGH_DATA);
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@ -113,16 +120,23 @@ impl AsyncResponseListener for HTMLMediaElementContext {
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elem.network_state.set(NETWORK_IDLE);
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elem.fire_simple_event("suspend");
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} else if elem.ready_state.get() != HAVE_NOTHING {
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}
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// => "If the connection is interrupted after some media data has been received..."
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else if elem.ready_state.get() != HAVE_NOTHING {
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// Step 2
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elem.error.set(Some(&*MediaError::new(&*window_from_node(&*elem),
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MEDIA_ERR_NETWORK)));
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// Step 3
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elem.network_state.set(NETWORK_IDLE);
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// TODO: update delay load flag
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// TODO: Step 4 - update delay load flag
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// Step 5
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elem.fire_simple_event("error");
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} else {
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}
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// => "If the media data cannot be fetched at all..."
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else {
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elem.queue_dedicated_media_source_failure_steps();
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}
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@ -189,7 +203,7 @@ impl HTMLMediaElement {
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&self.htmlelement
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}
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// https://html.spec.whatwg.org/multipage/#playing-the-media-resource:internal-pause-steps
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// https://html.spec.whatwg.org/multipage/#internal-pause-steps
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fn internal_pause_steps(&self) {
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// Step 1
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self.autoplaying.set(false);
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@ -200,17 +214,63 @@ impl HTMLMediaElement {
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self.paused.set(true);
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// 2.2
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self.queue_fire_simple_event("timeupdate");
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self.queue_internal_pause_steps_task();
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// 2.3
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self.queue_fire_simple_event("pause");
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// TODO 2.4 (official playback position)
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// TODO 2.3 (official playback position)
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}
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// TODO step 3 (media controller)
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}
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// https://html.spec.whatwg.org/multipage/#notify-about-playing
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fn notify_about_playing(&self) {
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// Step 1
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self.fire_simple_event("playing");
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// TODO Step 2
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}
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fn queue_notify_about_playing(&self) {
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struct Task {
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elem: Trusted<HTMLMediaElement>,
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}
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impl Runnable for Task {
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fn handler(self: Box<Task>) {
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self.elem.root().notify_about_playing();
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}
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}
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let task = Task {
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elem: Trusted::new(self),
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};
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let win = window_from_node(self);
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let _ = win.dom_manipulation_task_source().queue(DOMManipulationTask::MediaTask(box task));
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}
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// https://html.spec.whatwg.org/multipage/#internal-pause-steps step 2.2
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fn queue_internal_pause_steps_task(&self) {
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struct Task {
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elem: Trusted<HTMLMediaElement>,
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}
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impl Runnable for Task {
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fn handler(self: Box<Task>) {
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let elem = self.elem.root();
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// 2.2.1
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elem.fire_simple_event("timeupdate");
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// 2.2.2
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elem.fire_simple_event("pause");
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// TODO 2.2.3
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}
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}
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let task = Task {
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elem: Trusted::new(self),
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};
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let win = window_from_node(self);
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let _ = win.dom_manipulation_task_source().queue(DOMManipulationTask::MediaTask(box task));
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}
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fn queue_fire_simple_event(&self, type_: &'static str) {
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let win = window_from_node(self);
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let task = FireSimpleEventTask::new(self, type_);
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@ -235,6 +295,7 @@ impl HTMLMediaElement {
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return;
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}
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// Step 1
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match (old_ready_state, ready_state) {
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// previous ready state was HAVE_NOTHING, and the new ready state is
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// HAVE_METADATA
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@ -267,6 +328,7 @@ impl HTMLMediaElement {
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_ => (),
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}
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// Step 1
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// If the new ready state is HAVE_FUTURE_DATA or HAVE_ENOUGH_DATA,
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// then the relevant steps below must then be run also.
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match (old_ready_state, ready_state) {
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@ -277,8 +339,9 @@ impl HTMLMediaElement {
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(HAVE_NOTHING, HAVE_FUTURE_DATA) => {
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self.queue_fire_simple_event("canplay");
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// TODO: check paused state
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self.queue_fire_simple_event("playing");
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if !self.Paused() {
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self.queue_notify_about_playing();
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}
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}
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// new ready state is HAVE_ENOUGH_DATA
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@ -287,17 +350,23 @@ impl HTMLMediaElement {
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self.queue_fire_simple_event("canplay");
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if !self.Paused() {
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self.queue_fire_simple_event("playing");
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self.queue_notify_about_playing();
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}
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}
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//TODO: check sandboxed automatic features browsing context flag
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if self.autoplaying.get() &&
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self.Paused() &&
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self.Autoplay() {
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// Step 1
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self.paused.set(false);
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// TODO: show poster
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// TODO step 2: show poster
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// Step 3
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self.queue_fire_simple_event("play");
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self.queue_fire_simple_event("playing");
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// Step 4
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self.queue_notify_about_playing();
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// Step 5
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self.autoplaying.set(false);
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}
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self.queue_fire_simple_event("canplaythrough");
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@ -305,6 +374,8 @@ impl HTMLMediaElement {
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_ => (),
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}
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// TODO Step 2: media controller
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}
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// https://html.spec.whatwg.org/multipage/#concept-media-load-algorithm
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@ -447,7 +518,8 @@ impl HTMLMediaElement {
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// Step 5
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self.fire_simple_event("error");
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// TODO step 6 (delay load event)
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// TODO step 6 (resolve pending play promises)
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// TODO step 7 (delay load event)
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}
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// https://html.spec.whatwg.org/multipage/#media-element-load-algorithm
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@ -458,15 +530,12 @@ impl HTMLMediaElement {
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// Step 2
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self.generation_id.set(self.generation_id.get() + 1);
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// TODO reject pending play promises
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// Step 3
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let network_state = self.NetworkState();
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match network_state {
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NETWORK_LOADING |
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NETWORK_IDLE => {
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self.queue_fire_simple_event("abort");
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}
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_ => (),
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if network_state == NETWORK_LOADING || network_state == NETWORK_IDLE {
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self.queue_fire_simple_event("abort");
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}
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// Step 4
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@ -476,18 +545,22 @@ impl HTMLMediaElement {
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// TODO 4.2 (abort in-progress fetch)
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// TODO 4.3 (forget resource tracks)
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// TODO 4.3 (detach media provider object)
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// TODO 4.4 (forget resource tracks)
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// 4.4
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self.change_ready_state(HAVE_NOTHING);
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// 4.5
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if self.ready_state.get() != HAVE_NOTHING {
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self.change_ready_state(HAVE_NOTHING);
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}
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// 4.6
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if !self.Paused() {
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self.paused.set(true);
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}
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// TODO 4.6 (seeking)
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// TODO 4.7 (playback position)
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// TODO 4.8 (timeline offset)
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// TODO 4.9 (duration)
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// TODO 4.7 (seeking)
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// TODO 4.8 (playback position)
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// TODO 4.9 (timeline offset)
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// TODO 4.10 (duration)
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}
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// TODO step 5 (playback rate)
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@ -552,40 +625,57 @@ impl HTMLMediaElementMethods for HTMLMediaElement {
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// https://html.spec.whatwg.org/multipage/#dom-media-play
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fn Play(&self) {
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// Step 1
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// TODO step 1
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// Step 2
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if self.error.get().map_or(false, |e| e.Code() == MEDIA_ERR_SRC_NOT_SUPPORTED) {
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// TODO return rejected promise
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return;
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}
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// TODO step 3
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// Step 4
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if self.network_state.get() == NETWORK_EMPTY {
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self.invoke_resource_selection_algorithm();
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}
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// TODO step 2 (seek backwards)
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// TODO step 5 (seek backwards)
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// TODO step 3 (media controller)
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// TODO step 6 (media controller)
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// Step 4
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let state = self.ready_state.get();
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// Step 7
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if self.Paused() {
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// 4.1
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// 7.1
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self.paused.set(false);
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// TODO 4.2 (show poster)
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// TODO 7.2 (show poster)
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// 4.3
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// 7.3
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self.queue_fire_simple_event("play");
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// 4.4
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let state = self.ready_state.get();
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// 7.4
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if state == HAVE_NOTHING ||
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state == HAVE_METADATA ||
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state == HAVE_CURRENT_DATA {
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self.queue_fire_simple_event("waiting");
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} else {
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self.queue_fire_simple_event("playing");
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self.queue_notify_about_playing();
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}
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// 4.5
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self.autoplaying.set(false);
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// TODO 4.6 (media controller)
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}
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// Step 8
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else if state == HAVE_FUTURE_DATA || state == HAVE_ENOUGH_DATA {
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// TODO resolve pending play promises
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}
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// Step 9
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self.autoplaying.set(false);
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// TODO step 10 (media controller)
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// TODO return promise
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}
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// https://html.spec.whatwg.org/multipage/#dom-media-pause
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@ -623,7 +713,7 @@ impl VirtualMethods for HTMLMediaElement {
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};
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}
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// https://html.spec.whatwg.org/multipage/#playing-the-media-resource:media-element-75
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// https://html.spec.whatwg.org/multipage/#playing-the-media-resource:remove-an-element-from-a-document
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fn unbind_from_tree(&self, context: &UnbindContext) {
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self.super_type().unwrap().unbind_from_tree(context);
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