# InActive Standards **URL:** https://community.khronos.org/c/inactive-standards/5.md [Latest](https://community.khronos.org/latest.md) · [Categories](https://community.khronos.org/categories.md) · [Tags](https://community.khronos.org/tags.md) --- ## [About the InActive Standards category](https://community.khronos.org/t/about-the-inactive-standards-category/10)
**Author:** [@system](https://community.khronos.org/u/system)\ **Replies:** 0
--- ## [Opengl ES 3.0 how to use VAO,VBO on QT ](https://community.khronos.org/t/opengl-es-3-0-how-to-use-vao-vbo-on-qt/107916)
**Author:** [@third-hxw](https://community.khronos.org/u/third-hxw)\ **Replies:** 0\ **Last updated:** [October 23, 2021, 1:35pm UTC](https://community.khronos.org/t/opengl-es-3-0-how-to-use-vao-vbo-on-qt/107916 "2021-10-23T13:35:55Z")
I would like to ask about the Qt environment under the use of Opengl ES3.0, I follow the ES programming guide second version of the source code in Qt to draw, graphics can not come, I do not know what the problem, is not… --- ## [XA\_IID\_IMAGECONTROLS issue](https://community.khronos.org/t/xa-iid-imagecontrols-issue/107350)
**Author:** [@kbabu123](https://community.khronos.org/u/kbabu123)\ **Replies:** 0\ **Last updated:** [May 25, 2021, 6:36am UTC](https://community.khronos.org/t/xa-iid-imagecontrols-issue/107350 "2021-05-25T06:36:14Z")
Looking for help to resolve the following issue while using ImageControls interface of OpenMAX AL in Android 9 com.example.nativemedia W/libOpenSLES: Leaving Object::GetInterface (SL\_RESULT\_FEATURE\_UNSUPPORTED) Here’s … --- ## [OPEN SL ES Application crashing when trying to queue someone else's audio (streaming audio)](https://community.khronos.org/t/open-sl-es-application-crashing-when-trying-to-queue-someone-elses-audio-streaming-audio/106477)
**Author:** [@MateusArthur](https://community.khronos.org/u/MateusArthur)\ **Replies:** 0\ **Last updated:** [October 21, 2020, 12:26am UTC](https://community.khronos.org/t/open-sl-es-application-crashing-when-trying-to-queue-someone-elses-audio-streaming-audio/106477 "2020-10-21T00:26:45Z")
I’m trying to record audio and play it in real time using OpenSL ES, I can send the audio packet to the server, and the server is sending the packet to users correctly. However, there is a problem that I don’t know why. … --- ## [opensl es v1.01 to v1.1](https://community.khronos.org/t/opensl-es-v1-01-to-v1-1/6607)
**Author:** [@kanaan](https://community.khronos.org/u/kanaan)\ **Replies:** 2\ **Last updated:** [May 24, 2015, 1:43pm UTC](https://community.khronos.org/t/opensl-es-v1-01-to-v1-1/6607 "2015-05-24T13:43:37Z")
Hi all i am developing a java project for recording call, since there is a problem using MediaRecorder.AudioSource.VOICE\_CALL MediaRecorder.AudioSource.VOICE\_DOWNLINK MediaRecorder.AudioSource.VOICE\_UPLINK i found m… --- ## [Passing sound through the audio jack](https://community.khronos.org/t/passing-sound-through-the-audio-jack/7447)
**Author:** [@FreedCapybara](https://community.khronos.org/u/FreedCapybara)\ **Replies:** 1\ **Last updated:** [March 22, 2018, 8:00am UTC](https://community.khronos.org/t/passing-sound-through-the-audio-jack/7447 "2018-03-22T08:00:00Z")
Hello, I’m trying to write an app that will let my phone act as a mic for my Xbox One using a standard male-to-male 3.5mm cable. I want to pass the Android microphone input through the 3.5mm jack to the controller, and … --- ## [Buffer timestamps](https://community.khronos.org/t/buffer-timestamps/7383)
**Author:** [@robiwan](https://community.khronos.org/u/robiwan)\ **Replies:** 0\ **Last updated:** [December 13, 2017, 5:20am UTC](https://community.khronos.org/t/buffer-timestamps/7383 "2017-12-13T05:20:31Z")
Since most, if not all, native APIs (ALSA, CoreAudio, WASAPI to name the more notable ones) support audio timestamps , f.i. when retrieving a buffer of audio, I’d be able to know the “time” of the first sample in the buf… --- ## [Buffer sizes in OpenSL ES](https://community.khronos.org/t/buffer-sizes-in-opensl-es/7107)
**Author:** [@robiwan](https://community.khronos.org/u/robiwan)\ **Replies:** 5\ **Last updated:** [October 12, 2017, 1:47am UTC](https://community.khronos.org/t/buffer-sizes-in-opensl-es/7107 "2017-10-12T01:47:57Z")
Hi all, I’m looking at doing a C++ implementation for OpenSL ES, and need to get hold of possible buffer sizes to use (for the enqueued buffers), i.e. I don’t want to use JNI for accessing properties like “android medi… --- ## [Iptv](https://community.khronos.org/t/iptv/6695)
**Author:** [@JABEZ91](https://community.khronos.org/u/JABEZ91)\ **Replies:** 3\ **Last updated:** [July 10, 2017, 8:02am UTC](https://community.khronos.org/t/iptv/6695 "2017-07-10T08:02:20Z")
Hi guys, I am currently searching for an external codec for my IP-TV project on android device. Is OpenMAX AL suitable for it? Thank you for the advice. --- ## [OpenSL ES for Linux](https://community.khronos.org/t/opensl-es-for-linux/7245)
**Author:** [@SwaminathanG](https://community.khronos.org/u/SwaminathanG)\ **Replies:** 0\ **Last updated:** [May 24, 2017, 12:23am UTC](https://community.khronos.org/t/opensl-es-for-linux/7245 "2017-05-24T00:23:49Z")
Is there an implementation of OpenSL ES 1.1 available for Linux? --- ## [Recording data on device, transfer it over wifi, and play it on receiver](https://community.khronos.org/t/recording-data-on-device-transfer-it-over-wifi-and-play-it-on-receiver/7214)
**Author:** [@looopTools](https://community.khronos.org/u/looopTools)\ **Replies:** 0\ **Last updated:** [April 25, 2017, 1:30pm UTC](https://community.khronos.org/t/recording-data-on-device-transfer-it-over-wifi-and-play-it-on-receiver/7214 "2017-04-25T13:30:27Z")
Okay I am in a really frustrating situation, I have the following problems: I have to record audio in real-time from a server device, in this scenario an Android Phone but later it could be a laptop or another device. T… --- ## [Equializer problem.](https://community.khronos.org/t/equializer-problem/7179)
**Author:** [@igrigar](https://community.khronos.org/u/igrigar)\ **Replies:** 0\ **Last updated:** [March 27, 2017, 6:42am UTC](https://community.khronos.org/t/equializer-problem/7179 "2017-03-27T06:42:28Z")
Hi everyone, I have been playing around with google’s NDK project audio-echo (ndk-samples/audio-echo at master · android/ndk-samples · GitHub). It basically echoes the input from the microphone of an android device. Wel… --- ## [Latency varies on start/stop of Player and Recorder](https://community.khronos.org/t/latency-varies-on-start-stop-of-player-and-recorder/7126)
**Author:** [@saul01](https://community.khronos.org/u/saul01)\ **Replies:** 1\ **Last updated:** [February 2, 2017, 2:29pm UTC](https://community.khronos.org/t/latency-varies-on-start-stop-of-player-and-recorder/7126 "2017-02-02T14:29:47Z")
Dear all, I am modifying the echo example given by Android/Google people. What I am doing is: (1) Start Play (2) Start Record (3) Stop Play when my data/tone has played (few thousand samples) (4) Stop Record when all m… --- ## [\[Android\] How to record audio from a connected Bluetooth headset's mic?](https://community.khronos.org/t/android-how-to-record-audio-from-a-connected-bluetooth-headsets-mic/7084)
**Author:** [@kstn\_hut\_hat](https://community.khronos.org/u/kstn_hut_hat)\ **Replies:** 0\ **Last updated:** [December 9, 2016, 12:45am UTC](https://community.khronos.org/t/android-how-to-record-audio-from-a-connected-bluetooth-headsets-mic/7084 "2016-12-09T00:45:46Z")
I’m working an Android project about record and play from a connected Bluetooth headset’s microphone. I need to use native code (Open SL ES). I referred the answer of Hoan Nguyen. My results: If I record and play = Java… --- ## [How to create a MetadataExtract object?](https://community.khronos.org/t/how-to-create-a-metadataextract-object/7072)
**Author:** [@chaq686](https://community.khronos.org/u/chaq686)\ **Replies:** 1\ **Last updated:** [December 2, 2016, 12:17am UTC](https://community.khronos.org/t/how-to-create-a-metadataextract-object/7072 "2016-12-02T00:17:14Z")
Hi, In Android, I’ve been trying to extract metadata from an MP3 audio file using a Metadata Extractor object. But I’ve been failing on create the metadataExtractorObj. This is my following code: SLresult result… --- ## [Noise when starting to play new buffer](https://community.khronos.org/t/noise-when-starting-to-play-new-buffer/7011)
**Author:** [@andresTr](https://community.khronos.org/u/andresTr)\ **Replies:** 0\ **Last updated:** [October 8, 2016, 1:09pm UTC](https://community.khronos.org/t/noise-when-starting-to-play-new-buffer/7011 "2016-10-08T13:09:47Z")
Hello! I am using OpenSL ES to play audio on Android. I am experiencing an issue when one buffer in the playback queue ends and another starts, there is often a slight cracking sound between them. Is it a known issue? … --- ## [Does OpenSL work on iOS too?](https://community.khronos.org/t/does-opensl-work-on-ios-too/6947)
**Author:** [@CttPla](https://community.khronos.org/u/CttPla)\ **Replies:** 1\ **Last updated:** [August 15, 2016, 8:25am UTC](https://community.khronos.org/t/does-opensl-work-on-ios-too/6947 "2016-08-15T08:25:16Z")
I wrote an app for android using openSL and it worked great. My guess is if i can compile the same exact code (which is entirely native C++) for iOS too. Thanks! --- ## [get voice PCM data from opensl es is all zero data](https://community.khronos.org/t/get-voice-pcm-data-from-opensl-es-is-all-zero-data/6934)
**Author:** [@david\_tian](https://community.khronos.org/u/david_tian)\ **Replies:** 1\ **Last updated:** [August 4, 2016, 4:13am UTC](https://community.khronos.org/t/get-voice-pcm-data-from-opensl-es-is-all-zero-data/6934 "2016-08-04T04:13:22Z")
Hi, we use PJSIP to develop a voip application in android OS. PJSIP use opensl to capture voice pcm data when recording. Now I meet a problem: opensl works well(there is no error report when call opensl API), but captur… --- ## [opensl es fatal problem on Android jni](https://community.khronos.org/t/opensl-es-fatal-problem-on-android-jni/6783)
**Author:** [@amoonsky1234](https://community.khronos.org/u/amoonsky1234)\ **Replies:** 1\ **Last updated:** [May 14, 2016, 6:42am UTC](https://community.khronos.org/t/opensl-es-fatal-problem-on-android-jni/6783 "2016-05-14T06:42:03Z")
Hi, when I use android jni to call opensl es in android app, I get a fatal error when I destroy the player. The error is 03-04 16:40:59.977 W/art ( 3315): Native thread exiting without having called DetachCurrentThread… --- ## [Android 6 Upgrade Issues](https://community.khronos.org/t/android-6-upgrade-issues/6836)
**Author:** [@Obsidian](https://community.khronos.org/u/Obsidian)\ **Replies:** 0\ **Last updated:** [April 18, 2016, 1:52pm UTC](https://community.khronos.org/t/android-6-upgrade-issues/6836 "2016-04-18T13:52:57Z")
Hello, I’ve been testing out OpenSL with the new android 6.0 OS. It seems like there are some compatability issues with the upgrade on older phones. My specific example is Upgrading a Galaxy S6 to 6.0.1. Pre-upgrade I ha… --- ## [Making audio synthesis with OpenSL](https://community.khronos.org/t/making-audio-synthesis-with-opensl/6749)
**Author:** [@Syntey](https://community.khronos.org/u/Syntey)\ **Replies:** 1\ **Last updated:** [February 23, 2016, 8:04am UTC](https://community.khronos.org/t/making-audio-synthesis-with-opensl/6749 "2016-02-23T08:04:16Z")
Hello, I’m making audio app on Android with use of some synthesis, FM or AM. I started with Native Audio project. Little bit of sound generation is there, but I don’t know how I can continue with it. Here is code for sa… --- ## [OpenMax IL Latency consideration](https://community.khronos.org/t/openmax-il-latency-consideration/6739)
**Author:** [@Leo102](https://community.khronos.org/u/Leo102)\ **Replies:** 0\ **Last updated:** [January 25, 2016, 1:12am UTC](https://community.khronos.org/t/openmax-il-latency-consideration/6739 "2016-01-25T01:12:01Z")
If there any amendment for OpenMAX latency will be included in feature? I found that current OpenMAX IL specification only define the threshold time of API return, but didn’t specify the maximum latency of OpenMAX IL co… --- ## [h264 ROI encoding](https://community.khronos.org/t/h264-roi-encoding/6676)
**Author:** [@Sagiv\_B](https://community.khronos.org/u/Sagiv_B)\ **Replies:** 0\ **Last updated:** [August 31, 2015, 4:58am UTC](https://community.khronos.org/t/h264-roi-encoding/6676 "2015-08-31T04:58:13Z")
Hi All, Is it possible to configure omx\_video and to specify an ROI that the encoder has to focus on such that the quantisation factor for this ROI will be less aggressive and hence the quality of the ROI will be better… --- ## [OpenSL ES Beginner](https://community.khronos.org/t/opensl-es-beginner/6649)
**Author:** [@fekanne](https://community.khronos.org/u/fekanne)\ **Replies:** 0\ **Last updated:** [July 17, 2015, 5:54am UTC](https://community.khronos.org/t/opensl-es-beginner/6649 "2015-07-17T05:54:23Z")
Hi, i am new to OpenSL ES and NDK. I have to hold a small präsentation about OpenSL ES but i cant manage to find a example to play a simple soundclip. I got the book “Android NDK - The Beginners Guide” but having troubl… --- ## [Latency issue with Open SL](https://community.khronos.org/t/latency-issue-with-open-sl/6630)
**Author:** [@Karina](https://community.khronos.org/u/Karina)\ **Replies:** 0\ **Last updated:** [June 20, 2015, 6:02am UTC](https://community.khronos.org/t/latency-issue-with-open-sl/6630 "2015-06-20T06:02:21Z")
Hi, We are developing Android music app that allows to play small samples (like piano as instance). We are using Open SL for playing, recording and adding run-time pitch effect (custom algorithm). On our test devices … --- ## [Register multiple events to one callback](https://community.khronos.org/t/register-multiple-events-to-one-callback/6612)
**Author:** [@stefano.vuerich](https://community.khronos.org/u/stefano.vuerich)\ **Replies:** 1\ **Last updated:** [June 2, 2015, 11:33pm UTC](https://community.khronos.org/t/register-multiple-events-to-one-callback/6612 "2015-06-02T23:33:48Z")
Is it possible to register multiple events to one callback ? In the specific I need to register SL\_PLAYEVENT\_HEADATNEWPOS and SL\_PLAYEVENT\_HEADATEND for PlayItf Is this possible? --- ## [voice\_call recorder using OpenSL ES](https://community.khronos.org/t/voice-call-recorder-using-opensl-es/6605)
**Author:** [@kanaan](https://community.khronos.org/u/kanaan)\ **Replies:** 2\ **Last updated:** [May 24, 2015, 1:49pm UTC](https://community.khronos.org/t/voice-call-recorder-using-opensl-es/6605 "2015-05-24T13:49:16Z")
Hi all can i record call using OpenSL ES in android? if is yes can give me sample if no please explain why not? --- ## [OMX\_U32 definition problem](https://community.khronos.org/t/omx-u32-definition-problem/4979)
**Author:** [@emrainey](https://community.khronos.org/u/emrainey)\ **Replies:** 0\ **Last updated:** [May 3, 2015, 7:54pm UTC](https://community.khronos.org/t/omx-u32-definition-problem/4979 "2015-05-03T19:54:02Z")
I’ve notice that the 1.2 spec still has a problem where OMX\_U32 is defined as; typedef unsigned long OMX\_U32; But on most 64 bit platforms this compiles as a 64 bit value! It should be defined as: typedef unsigned int… --- ## [do you have a plan for updating OMX IL API to support HEVC(H.265) encoding ?](https://community.khronos.org/t/do-you-have-a-plan-for-updating-omx-il-api-to-support-hevc-h-265-encoding/4974)
**Author:** [@Lafley](https://community.khronos.org/u/Lafley)\ **Replies:** 0\ **Last updated:** [April 24, 2015, 4:43am UTC](https://community.khronos.org/t/do-you-have-a-plan-for-updating-omx-il-api-to-support-hevc-h-265-encoding/4974 "2015-04-24T04:43:51Z")
I’m implementing OMX IL to encode HEVC(H.265). but there’ no HEVC(H.265) structure and interface. ex) struct OMX\_VIDEO\_PARAM\_HEVCTYPE. do you have a plan for updating OMX IL interface to support HEVC(H.265) encoding ? --- ## [Too many objects on Android JNI](https://community.khronos.org/t/too-many-objects-on-android-jni/4948)
**Author:** [@dariux881](https://community.khronos.org/u/dariux881)\ **Replies:** 1\ **Last updated:** [March 19, 2015, 12:47pm UTC](https://community.khronos.org/t/too-many-objects-on-android-jni/4948 "2015-03-19T12:47:15Z")
Hello, I’m using OpenSL ES on Android via JNI to play sounds. I use an asset and a source for each sound, but I can’t destroy them. The destroy method works on the source, but not on asset. In this way the engine store… [Next page](https://community.khronos.org/c/inactive-standards/5.md?page=1)