From b699e769728518e58c79937875559a540275a185 Mon Sep 17 00:00:00 2001
From: Eric Rosenbaum <eric.rosenbaum@gmail.com>
Date: Mon, 16 Dec 2019 13:49:39 -0500
Subject: [PATCH] Use backup down sampler when 22kHz not supported
---
src/containers/sound-editor.jsx | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/src/containers/sound-editor.jsx b/src/containers/sound-editor.jsx
index c9826ab4d..c68c30d05 100644
--- a/src/containers/sound-editor.jsx
+++ b/src/containers/sound-editor.jsx
@@ -24,6 +24,7 @@ class SoundEditor extends React.Component {
constructor (props) {
super(props);
bindAll(this, [
+ 'backupDownSampler',
'copy',
'copyCurrentBuffer',
'handleCopyToNew',
@@ -43,7 +44,8 @@ class SoundEditor extends React.Component {
'paste',
'handleKeyPress',
'handleContainerClick',
- 'setRef'
+ 'setRef',
+ 'resampleBufferToRate'
]);
this.state = {
copyBuffer: null,
@@ -332,7 +334,14 @@ class SoundEditor extends React.Component {
if (window.OfflineAudioContext) {
offlineContext = new window.OfflineAudioContext(1, newLength, newRate);
} else if (window.webkitOfflineAudioContext) {
- offlineContext = new window.webkitOfflineAudioContext(1, newLength, newRate);
+ try {
+ offlineContext = new window.webkitOfflineAudioContext(1, newLength, newRate);
+ } catch {
+ if (newRate === (buffer.sampleRate / 2)) {
+ return resolve(this.backupDownSampler(buffer, newRate));
+ }
+ return reject('Could not resample');
+ }
} else {
return reject('No offline audio context');
}
@@ -351,6 +360,16 @@ class SoundEditor extends React.Component {
};
});
}
+ backupDownSampler (buffer, newRate) {
+ log.warn(`Using backup down sampler for conversion from ${buffer.sampleRate} to ${newRate}`);
+ const newSamples = buffer.samples.filter((element, index) =>
+ index % 2 === 0
+ );
+ return {
+ samples: newSamples,
+ sampleRate: newRate
+ };
+ }
paste () {
// If there's no selection, paste at the end of the sound
const {samples} = this.copyCurrentBuffer();
--
GitLab