mittwerk/element-x-android - element-x-android - Purple I2P team Git service

Android Matrix messenger application using the Matrix Rust Sdk and Jetpack Compose

2 lines

33 B

Raw Normal View History Unescape Escape

Receive and play a voice message (#1503) ## Type of change - [x] Feature - [ ] Bugfix - [ ] Technical - [ ] Other : ## Content This PR consists of several macro-blocks separated by path/package: - `messages.impl.mediaplayer` : Global (room-wide) media player, now used only for voice messages but could be used for all media within EX in the future. It is backed by media3's exoplayer. Currently not unit-tested because mocking exoplayer is not trivial. - `messages.impl.voicemessages.play` : Business logic of a timeline voice message. This is all the logic that manages the voice message bubble. - `messages.impl.timeline.model` & `messages.impl.timeline.factories`: Timeline code that takes care of creating the `content` object for voice messages. - `messages.impl.timeline.components` : The actual View composable that shows the UI inside a voice message bubble. All the rest is just small related changes that must be done here and there in existing code. From a high level perspective this is how it works: - Voice messages are unlike other message bubbles because they carry state (i.e. playing, downloading...) so they have a Presenter managing this state. - Media content (i.e. the ogg file) of a voice message is downloaded from the rust SDK on first play then stored in a voice messages cache (see the `VoiceMessageCache` class, it is just a subdirectory in the app's cacheDir which is indexed by the matrix content uri). All further play attempts are done from the cache without hitting the rust SDK anymore. - Playback of the ogg file is handled with the `VoiceMessagePlayer` class which is basically a "view" of the global `MediaPlayer` that allow the voice message to only see the media player state belonging to its media content. - Drawing of the waveform is done with an OSS library wrapped in the `WaveformProgressIndicator` composable. Known issues: - The waveform has no position slider. - The waveform (and together with it the whole message bubble) is taller than the actual Figma design. - Swipe to reply for voice messages is disabled to avoid conflict with the audio scrubbing gesture (to reply to a voice message you have to use the long press menu). - The loading indicator is always shown (there is no delay). - Voice messages don't stop playing when redacted. ## Motivation and context https://github.com/vector-im/element-meta/issues/2083 ## Screenshots / GIFs Provided by Screenshot tests in the PR itself.

11 months ago

Receive and play a voice message