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glstereomix

glstereomix

Properties

Types and Values

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstAggregator
                    ╰── GstVideoAggregator
                        ╰── GstGLBaseMixer
                            ╰── GstGLMixer
                                ╰── GstGLStereoMix

Implemented Interfaces

GstGLStereoMix implements GstChildProxy.

Description

Combine 2 input streams to produce a stereoscopic output stream. Input views are taken from the left pad and right pad respectively, and mixed according to their timelines.

If either input stream is stereoscopic, the approproriate view (left or right) is taken from each stream and placed into the output.

The multiview representation on the output is chosen according to the downstream caps.

Examples

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gst-launch-1.0 -v videotestsrc pattern=ball name=left \
    videotestsrc name=right glstereomix name=mix \
    left. ! vid/x-raw,width=640,height=480! glupload ! mix.  \
    right. ! video/x-raw,width=640,height=480! glupload ! mix.  \
    mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=side-by-side ! \
    queue ! glimagesink output-multiview-mode=side-by-side

Mix 2 different videotestsrc patterns into a side-by-side stereo image and display it.

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gst-launch-1.0 -ev v4l2src name=left \
    videotestsrc name=right \
    glstereomix name=mix \
    left. ! video/x-raw,width=640,height=480 ! glupload ! glcolorconvert ! mix.  \
    right. ! video/x-raw,width=640,height=480 ! glupload ! mix.  \
    mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=top-bottom ! \
    glcolorconvert ! gldownload ! queue ! x264enc ! h264parse ! \
    mp4mux ! progressreport ! filesink location=output.mp4

Mix the input from a camera to the left view, and videotestsrc to the right view, and encode as a top-bottom frame packed H.264 video.

Synopsis

Element Information

plugin

opengl

author

Jan Schmidt <jan@centricular.com>

class

Filter/Effect/Video

Element Pads

name

sink_%u

direction

sink

presence

request

details

video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

video/x-raw(meta:GstVideoGLTextureUploadMeta), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

video/x-raw, format=(string){ RGBA, RGB, RGBx, BGR, BGRx, BGRA, xRGB, xBGR, ARGB, ABGR, Y444, I420, YV12, Y42B, Y41B, NV12, NV21, YUY2, UYVY, AYUV, GRAY8, GRAY16_LE, GRAY16_BE, RGB16, BGR16 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

name

src

direction

source

presence

always

details

video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

video/x-raw(meta:GstVideoGLTextureUploadMeta), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

video/x-raw, format=(string){ RGBA, RGB, RGBx, BGR, BGRx, BGRA, xRGB, xBGR, ARGB, ABGR, Y444, I420, YV12, Y42B, Y41B, NV12, NV21, YUY2, UYVY, AYUV, GRAY8, GRAY16_LE, GRAY16_BE, RGB16, BGR16 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

Functions

Types and Values

struct GstGLStereoMix

struct GstGLStereoMix;

Property Details

The “downmix-mode” property

  “downmix-mode”             GstGLStereoDownmix

Output anaglyph type to generate when downmixing to mono.

Flags: Read / Write

Default value: Dubois optimised Green-Magenta anaglyph

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