Add support for OpenSL backend

[tmatth]

This would allow RtAudio to be usable for realtime audio on Android, see:
https://developer.android.com/ndk/guides/audio/opensl/opensl-for-android

@radarsat1 @garyscavone any thoughts on this?

[garyscavone]

It would be nice to have Android support in RtAudio. I don’t have much time to look into the details of how this might work. But if you want to take a shot at it and submit a PR, I’d be happy to consider it.

…

On Sep 9, 2018, at 2:26 PM, Tristan Matthews ***@***.***> wrote: This would allow RtAudio to be usable for realtime audio on Android, see: https://developer.android.com/ndk/guides/audio/opensl/opensl-for-android <https://developer.android.com/ndk/guides/audio/opensl/opensl-for-android> @radarsat1 <https://github.com/radarsat1> @garyscavone <https://github.com/garyscavone> any thoughts on this? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#158>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFOBpdYWmWKr012DGHdQWC0NXoLHuKN_ks5uZV1qgaJpZM4WgZBu>. {"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/thestk/rtaudio","title":"thestk/rtaudio","subtitle":"GitHub repository","main_image_url":"https://assets-cdn.github.com/images/email/message_cards/header.png","avatar_image_url":"https://assets-cdn.github.com/images/email/message_cards/avatar.png","action":{"name":"Open in GitHub","url":"https://github.com/thestk/rtaudio"}},"updates":{"snippets":[{"icon":"DESCRIPTION","message":"Add support for OpenSL backend (#158)"}],"action":{"name":"View Issue","url":"#158"}}} [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage", "potentialAction": { ***@***.***": "ViewAction", "target": "#158", "url": "#158", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "https://github.com" } }, { ***@***.***": "MessageCard", ***@***.***": "http://schema.org/extensions", "hideOriginalBody": "false", "originator": "AF6C5A86-E920-430C-9C59-A73278B5EFEB", "title": "Add support for OpenSL backend (#158)", "sections": [ { "text": "", "activityTitle": "**Tristan Matthews**", "activityImage": "https://assets-cdn.github.com/images/email/message_cards/avatar.png", "activitySubtitle": ***@***.***", "facts": [ { "name": "Repository: ", "value": "thestk/rtaudio" }, { "name": "Issue #: ", "value": 158 } ] } ], "potentialAction": [ { "name": "Add a comment", ***@***.***": "ActionCard", "inputs": [ { "isMultiLine": true, ***@***.***": "TextInput", "id": "IssueComment", "isRequired": false } ], "actions": [ { "name": "Comment", ***@***.***": "HttpPOST", "target": "https://api.github.com", "body": "{\n\"commandName\": \"IssueComment\",\n\"repositoryFullName\": \"thestk/rtaudio\",\n\"issueId\": 158,\n\"IssueComment\": \"{{IssueComment.value}}\"\n}" } ] }, { "name": "Close issue", ***@***.***": "HttpPOST", "target": "https://api.github.com", "body": "{\n\"commandName\": \"IssueClose\",\n\"repositoryFullName\": \"thestk/rtaudio\",\n\"issueId\": 158\n}" }, { "targets": [ { "os": "default", "uri": "#158" } ], ***@***.***": "OpenUri", "name": "View on GitHub" }, { "name": "Unsubscribe", ***@***.***": "HttpPOST", "target": "https://api.github.com", "body": "{\n\"commandName\": \"MuteNotification\",\n\"threadId\": 377589870\n}" } ], "themeColor": "26292E" } ]

[Serg77m]

I have a patch with limited OpenSLES support. Only 48000 Hz, only 16 and 32 bits (signed int), only default device. Playback, recording and duplex mode should works. Unfortunately, I have no time to finalize it, but maybe it will be useful to someone.

Compilation flags: -D__ANDROID_OPENSLES__
Linking flags: -lOpenSLES

rtaudio-opensles.zip