This is in preparation of further changes to the way the audio level is computed and to allow recording and sending of the waveform. The main reasoning behind the change is twofold:
1) We don't need the precision of Double in our context (we just need a rough indication of the changes in audio level to successfully draw a level meter or a waveform in our UI).
2) Performance: It is true that on 64 bit CPUs single operations involving Floats or Doubles take the same amount of time (i.e one clock cycle). But there are other aspects here that vouch in favor of Floats:
- A float takes half the space in memory compared to a double, so when storing long lists of them this can add up.
- On Android O and greater the ART runtime can "vectorize" certain operations on lists and make use of the CPU's SIMD registers which are generally 128 bits. So by using floats 4 of them can fit and be computed at the same time whilst with doubles only 2 will fit halving the throughput.
References:
- https://source.android.com/docs/core/runtime/improvements
- https://www.slideshare.net/linaroorg/automatic-vectorization-in-art-android-runtime-sfo17216
- Add full screen mode for the rich text editor (RTE). When text formatting options are enabled, the editor can be dragged to full screen.
- Remove `ConstraintLayout` from `textcomposer` module, now made much simpler now the RTE supports being called in multiple layouts matrix-org/matrix-rich-text-editor#822
- Part of vector-im/element-meta#1973
- Includes design from #1315
- Fixes#1293 (through new layout)
- Fixes#1394 (through inclusion of matrix-org/matrix-rich-text-editor#824)
- Fixes#1259 (through inclusion of matrix-org/matrix-rich-text-editor#820)
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Co-authored-by: ElementBot <benoitm+elementbot@element.io>
* Add link functionality to rich text editor
* Add 'list dialog' component compound design library
* Add 'text field list item' component to compound design library
* Fix composer height and padding
* Update plus and cancel icons with design system icons
* Update border so that it is always visible
* Update placeholder color
* Update send and tick icons
* Update design of formatting buttons
* Update RTE icons
* Reduce bottom padding
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Co-authored-by: ElementBot <benoitm+elementbot@element.io>
David Langley