GstGLColorConvert

GstGLColorConvert — convert between video color spaces and formats

Functions

Types and Values

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstGLColorConvert

Description

GstGLColorConvert is an object that converts between color spaces and/or formats using OpenGL Shaders.

A GstGLColorConvert can be created with gst_gl_color_convert_new(), the configuration negotiated with gst_gl_color_convert_transform_caps() and the conversion performed with gst_gl_color_convert_perform().

The glcolorconvertelement provides a GStreamer element that uses GstGLColorConvert to convert between video formats and color spaces.

Functions

gst_gl_color_convert_new ()

GstGLColorConvert *
gst_gl_color_convert_new (GstGLContext *context);

Parameters

context

a GstGLContext

 

Returns

a new GstGLColorConvert object

Since: 1.4


gst_gl_color_convert_set_caps ()

gboolean
gst_gl_color_convert_set_caps (GstGLColorConvert *convert,
                               GstCaps *in_caps,
                               GstCaps *out_caps);

Initializes convert with the information required for conversion.

Parameters

convert

a GstGLColorConvert

 

in_caps

input GstCaps

 

out_caps

output GstCaps

 

Since: 1.6


gst_gl_color_convert_transform_caps ()

GstCaps *
gst_gl_color_convert_transform_caps (GstGLContext *context,
                                     GstPadDirection direction,
                                     GstCaps *caps,
                                     GstCaps *filter);

Provides an implementation of GstBaseTransformClass::transform_caps()

Parameters

context

a GstGLContext to use for transforming caps

 

direction

a GstPadDirection

 

caps

the GstCaps to transform.

[transfer none]

filter

a set of filter GstCaps.

[transfer none]

Returns

the converted GstCaps.

[transfer full]

Since: 1.6


gst_gl_color_convert_fixate_caps ()

GstCaps *
gst_gl_color_convert_fixate_caps (GstGLContext *context,
                                  GstPadDirection direction,
                                  GstCaps *caps,
                                  GstCaps *other);

Provides an implementation of GstBaseTransformClass::fixate_caps()

Parameters

context

a GstGLContext to use for transforming caps

 

direction

a GstPadDirection

 

caps

the GstCaps of direction .

[transfer none]

other

the GstCaps to fixate.

[transfer full]

Returns

the fixated GstCaps.

[transfer full]

Since: 1.8


gst_gl_color_convert_decide_allocation ()

gboolean
gst_gl_color_convert_decide_allocation
                               (GstGLColorConvert *convert,
                                GstQuery *query);

Provides an implementation of GstBaseTransfromClass::decide_allocation()

Parameters

convert

a GstGLColorConvert

 

query

a completed ALLOCATION GstQuery

 

Returns

whether the allocation parameters were successfully chosen

Since: 1.8


gst_gl_color_convert_perform ()

GstBuffer *
gst_gl_color_convert_perform (GstGLColorConvert *convert,
                              GstBuffer *inbuf);

Converts the data contained by inbuf using the formats specified by the GstCaps passed to gst_gl_color_convert_set_caps()

Parameters

convert

a GstGLColorConvert

 

inbuf

the GstGLMemory filled GstBuffer to convert.

[transfer none]

Returns

a converted GstBuffer or NULL.

[transfer full]

Since: 1.4

Types and Values

GST_GL_COLOR_CONVERT_FORMATS

#define             GST_GL_COLOR_CONVERT_FORMATS

The currently supported formats that can be converted


GST_GL_COLOR_CONVERT_VIDEO_CAPS

#define             GST_GL_COLOR_CONVERT_VIDEO_CAPS

The currently supported GstCaps that can be converted


GstGLColorConvert

typedef struct _GstGLColorConvert GstGLColorConvert;

Opaque GstGLColorConvert object


GstGLColorConvertClass

typedef struct {
} GstGLColorConvertClass;

The GstGLColorConvertClass struct only contains private data

See Also

GstGLUpload, GstGLMemory, GstGLBaseMemory