## glupload

glupload — A from video to GL flow filter

## Synopsis

    struct              GstGLUpload;

## Object Hierarchy

      GObject
       +----GstObject
             +----GstElement
                   +----GstBaseTransform
                         +----GstGLUpload

## Properties

      "external-opengl-context"  gulong                : Write

## Description

upload video frames video frames into opengl textures.

### Color space conversion

Depends on the driver and when needed, the color space conversion is made in a fragment shader using one frame buffer object instance, or using mesa ycbcr .

### Examples

    1

    gst-launch -v videotestsrc ! "video/x-raw-rgb" ! glupload ! glimagesink

A pipeline to test hardware scaling. No special opengl extension is used in this pipeline, that's why it should work with OpenGL >= 1.1. That's the case if you are using the MESA3D driver v1.3.

    1

    gst-launch -v videotestsrc ! "video/x-raw-yuv, format=(fourcc)I420" ! glupload ! glimagesink

A pipeline to test hardware scaling and hardware colorspace conversion. When your driver supports GLSL (OpenGL Shading Language needs OpenGL >= 2.1), the 4 following format YUY2, UYVY, I420, YV12 and AYUV are converted to RGB32 through some fragment shaders and using one framebuffer (FBO extension OpenGL >= 1.4). If your driver does not support GLSL but supports MESA_YCbCr extension then the you can use YUY2 and UYVY. In this case the colorspace conversion is automatically made when loading the texture and therefore no framebuffer is used.

    1
    2

    gst-launch -v videotestsrc ! "video/x-raw-rgb, width=320, height=240" ! glupload ! \
       "video/x-raw-gl, width=640, height=480" ! glimagesink

A pipeline to test hardware scaling. Frame buffer extension is required. Inded one FBO is used bettween glupload and glimagesink, because the texture needs to be resized.

    1
    2

    gst-launch -v videotestsrc ! "video/x-raw-yuv, width=320, height=240" ! glupload ! \
       "video/x-raw-gl, width=640, height=480" ! glimagesink

A pipeline to test hardware scaling. Frame buffer extension is required. Inded one FBO is used bettween glupload and glimagesink, because the texture needs to be resized. Depends on your driver the color space conversion is made in a fragment shader using one frame buffer object instance, or using mesa ycbcr .

## Synopsis

### Element Information

plugin | opengl
author | Julien Isorce <julien.isorce@gmail.com>
class | Filter/Effect

### Element Pads

name | sink
direction | sink
presence | always
details | video/x-raw-rgb, bpp=(int)24, depth=(int)24, endianness=(int)4321, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)24, endianness=(int)4321, red_mask=(int)-16777216, green_mask=(int)16711680, blue_mask=(int)65280, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)32, endianness=(int)4321, red_mask=(int)-16777216, green_mask=(int)16711680, blue_mask=(int)65280, alpha_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)24, depth=(int)24, endianness=(int)4321, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)24, endianness=(int)4321, red_mask=(int)65280, green_mask=(int)16711680, blue_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)32, endianness=(int)4321, red_mask=(int)65280, green_mask=(int)16711680, blue_mask=(int)-16777216, alpha_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)24, endianness=(int)4321, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)24, endianness=(int)4321, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)32, endianness=(int)4321, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, alpha_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-rgb, bpp=(int)32, depth=(int)32, endianness=(int)4321, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, alpha_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]
| video/x-raw-yuv, format=(fourcc){ I420, YV12, YUY2, UYVY, AYUV }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

name | src
direction | source
presence | always
details | video/x-raw-gl, width=(int)[ 1, 8000 ], height=(int)[ 1, 6000 ], pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)[ 0/1, 100/1 ]

## Details

### struct GstGLUpload

    struct GstGLUpload;

## Property Details

### The `"external-opengl-context"` property

      "external-opengl-context"  gulong                : Write

Give an external OpenGL context with which to share textures.