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Deal with Google's HTML5 autoplay policy 

Resume audio context after mouse, touch or key input.
This commit is contained in:
Leon Krause 2019-01-20 14:25:15 +01:00
parent 09e4d7e9eb
commit 8f1669e771
3 changed files with 16 additions and 0 deletions
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9
platform/javascript/audio_driver_javascript.cpp
View File

@ -146,6 +146,15 @@ void AudioDriverJavaScript::start() {
/* clang-format on */
}
void AudioDriverJavaScript::resume() {
/* clang-format off */
EM_ASM({
if (_audioDriver_audioContext.resume)
_audioDriver_audioContext.resume();
});
/* clang-format on */
}
int AudioDriverJavaScript::get_mix_rate() const {
/* clang-format off */

1
platform/javascript/audio_driver_javascript.h
View File

@ -49,6 +49,7 @@ public:
virtual Error init();
virtual void start();
void resume();
virtual int get_mix_rate() const;
virtual SpeakerMode get_speaker_mode() const;
virtual void lock();

6
platform/javascript/os_javascript.cpp
View File

@ -245,6 +245,8 @@ EM_BOOL OS_JavaScript::keydown_callback(int p_event_type, const EmscriptenKeyboa
return false;
}
os->input->parse_input_event(ev);
// Resume audio context after input in case autoplay was denied.
os->audio_driver_javascript.resume();
return true;
}
@ -335,6 +337,8 @@ EM_BOOL OS_JavaScript::mouse_button_callback(int p_event_type, const EmscriptenM
ev->set_button_mask(mask);
os->input->parse_input_event(ev);
// Resume audio context after input in case autoplay was denied.
os->audio_driver_javascript.resume();
// Prevent multi-click text selection and wheel-click scrolling anchor.
// Context menu is prevented through contextmenu event.
return true;
@ -663,6 +667,8 @@ EM_BOOL OS_JavaScript::touch_press_callback(int p_event_type, const EmscriptenTo
os->input->parse_input_event(ev);
}
// Resume audio context after input in case autoplay was denied.
os->audio_driver_javascript.resume();
return true;
}