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Adding browser's webp encoder (#72)

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* Adding WebP (without feature detect in place)

* Adding WebP check

* Remove unused import
This commit is contained in:
Jake Archibald
2018-07-02 15:15:18 +01:00
parent a09ec269b8
commit 68729979e3
5 changed files with 94 additions and 20 deletions
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24
src/codecs/encoders.ts
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@@ -2,12 +2,18 @@ import * as mozJPEG from './mozjpeg/encoder';
import * as identity from './identity/encoder';
import * as browserPNG from './browser-png/encoder';
import * as browserJPEG from './browser-jpeg/encoder';
import * as browserWebP from './browser-webp/encoder';
export interface EncoderSupportMap {
[key: string]: boolean;
}
export type EncoderState =
identity.EncoderState | mozJPEG.EncoderState | browserPNG.EncoderState | browserJPEG.EncoderState;
identity.EncoderState | mozJPEG.EncoderState | browserPNG.EncoderState |
browserJPEG.EncoderState | browserWebP.EncoderState;
export type EncoderOptions =
identity.EncodeOptions | mozJPEG.EncodeOptions | browserPNG.EncodeOptions |
browserJPEG.EncodeOptions;
browserJPEG.EncodeOptions | browserWebP.EncodeOptions;
export type EncoderType = keyof typeof encoderMap;
export const encoderMap = {
@@ -15,6 +21,20 @@ export const encoderMap = {
[mozJPEG.type]: mozJPEG,
[browserPNG.type]: browserPNG,
[browserJPEG.type]: browserJPEG,
[browserWebP.type]: browserWebP,
};
export const encoders = Array.from(Object.values(encoderMap));
/** Does this browser support a given encoder? Indexed by label */
export const encodersSupported = Promise.resolve().then(async () => {
const encodersSupported: EncoderSupportMap = {};
await Promise.all(encoders.map(async (encoder) => {
// If the encoder provides a featureTest, call it, otherwise assume supported.
const isSupported = !('featureTest' in encoder) || await encoder.featureTest();
encodersSupported[encoder.type] = isSupported;
}));
return encodersSupported;
});