i.MX ProcessorsのトピックRe: How to use the gst-launch in application

How to use the gst-launch in application

rothwanhuang — Tue, 15 Nov 2016 01:08:35 GMT

Hi , My Bsp is imx6q_L3_14_52.

gst-launch videotestsrc ! 'video/x-raw-rgb, width=(int)640,height=(int)480' ! ximagesink is OK, but i want to create the application,for example Video Record,Video Play , but i don't know how to link the gstreamer lib in my application ? can you support the reference of Using gstreamer lib ? for example in my application have some sub functions from gstreamer,

/* Create gstreamer elements */
pipeline      = gst_pipeline_new ("media-player");
source        = gst_element_factory_make ("filesrc","file-source");
demuxer      = gst_element_factory_make ("mfw_mp4demuxer","avi-demuxer");
decvd        = gst_element_factory_make ("mfw_vpudecoder", "video-decoder");
decad        = gst_element_factory_make ("mad", "mp3-decoder");
vdsink        = gst_element_factory_make ("mfw_v4lsink",    "video-sink");
vdqueue      = gst_element_factory_make ("queue",            "video-queue");
adqueue      = gst_element_factory_make ("queue",            "audio-queue");
adsink        = gst_element_factory_make ("fakesink",        "audio-sink");

g_object_set (decvd, "codec-type", "std_avc", NULL);

and so on, when compile the program, some Errors are show.

Thanks!

Re: How to use the gst-launch in application

Yuri — Tue, 15 Nov 2016 02:07:15 GMT

Hello

it is required to build target system, including multimedia recipes (with GST) of NXP Linux BSP,

and then - build SDK for application design.

https://community.nxp.com/docs/DOC-95254

How to build the yocto SDK?

Have a great day,
Yuri

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Re: How to use the gst-launch in application

rothwanhuang — Tue, 15 Nov 2016 02:20:03 GMT

Hi Yuri,

Yes， i add add the following code to my local.conf:

LICENSE_FLAGS_WHITELIST = "commercial"

COMMERCIAL_AUDIO_PLUGINS ?= " \
gst-plugins-ugly-mad \
gst-plugins-ugly-mpegaudioparse \
"
COMMERCIAL_VIDEO_PLUGINS ?= " \
gst-plugins-ugly-mpeg2dec \
gst-plugins-ugly-mpegstream \
gst-plugins-bad-mpegvideoparse \
"
CORE_IMAGE_EXTRA_INSTALL += " \
packagegroup-fsl-gstreamer \
gst-plugins-base-videotestsrc \
gst-plugins-bad-fbdevsink \
gst-ffmpeg alsa-utils \
gst-plugins-good-isomp4 \
"

and can i use tnem for my application design ?

Thanks!

Re: How to use the gst-launch in application

Yuri — Tue, 15 Nov 2016 03:41:32 GMT

Have You generated the SDK ?

~Yuri.

Re: How to use the gst-launch in application

rothwanhuang — Tue, 15 Nov 2016 03:45:35 GMT

No , I don't know how to generated the SDK ,can you support the steps for generated the SDK? thanks!

Re: How to use the gst-launch in application

Yuri — Tue, 15 Nov 2016 04:36:47 GMT

https://community.nxp.com/thread/385729

Re: How to use the gst-launch in application

rothwanhuang — Wed, 16 Nov 2016 03:57:45 GMT

Hi Yuri,

i read the "How to build the yocto SDK? " ,but i don't know how to build or add the yocto SDK in my linux ? can you tell me the steps ? thanks!

Re: How to use the gst-launch in application

rothwanhuang — Wed, 16 Nov 2016 04:26:20 GMT

Hi Yuri,

I have the bsp of imx6q_L3_14_52.and how to modify the conf file ? and how to bitbake <image> -c populate_sdk ? the toolchain installer will be in tmp/deploy/sdk in the Build Directory." thanks !

Re: How to use the gst-launch in application

Yuri — Thu, 17 Nov 2016 05:35:05 GMT

Hello,

the following may be helpful regarding Yocto approach :

Yocto Project Software Development Kit (SDK) Developer's Guide

Regards,

Yuri.

Re: How to use the gst-launch in application

Yuri — Thu, 17 Nov 2016 05:40:04 GMT

As for NXP BSPs specifics, please use NXP Linux documentation;

in particular "i.MX_Yocto_Project_User's_Guide.pdf" and"i.MX_BSP_Porting_Guide.pdf".

http://www.nxp.com/webapp/Download?colCode=L3.14.52_1.1.0_LINUX_DOCS&Parent_nodeId=1337699481071706174845&Parent_pageTyp…

Summary Page :

i.MX 6 Series Software and Development Tool|NXP

~Yuri.