GstGLMemory: GStreamer Bad Plugins 1.0 Library Reference Manual

GstGLMemory

GstGLMemory — memory subclass for GL textures

Functions

#define	GST_GL_MEMORY_ALLOCATOR()
void	gst_gl_memory_init ()
gboolean	gst_gl_memory_setup_buffer ()
GstVideoGLTextureType	gst_gl_texture_type_from_format ()
gboolean	gst_is_gl_memory ()

Types and Values

GstGLMemory

Description

GstGLMemory is a GstGLBaseBuffer subclass providing support for the mapping of GL textures.

GstGLMemory is created through gst_gl_memory_alloc() or system memory can be wrapped through gst_gl_memory_wrapped().

Data is uploaded or downloaded from the GPU as is necessary.

Functions

GST_GL_MEMORY_ALLOCATOR()

#define GST_GL_MEMORY_ALLOCATOR(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_MEMORY_ALLOCATOR, GstGLMemoryAllocator))

gst_gl_memory_init ()

void
gst_gl_memory_init (GstGLMemory *mem,
                    GstAllocator *allocator,
                    GstMemory *parent,
                    GstGLContext *context,
                    GstGLTextureTarget target,
                    GstAllocationParams *params,
                    GstVideoInfo *info,
                    guint plane,
                    GstVideoAlignment *valign,
                    gpointer user_data,
                    GDestroyNotify notify);

Initializes mem with the required parameters

Parameters

mem	the GstGLBaseMemory to initialize
allocator	the GstAllocator to initialize with
parent	the parent GstMemory to initialize with.	[allow-none]
context	the GstGLContext to initialize with
params	the `GstAllocationParams` to initialize with.	[allow-none]
size	the number of bytes to be allocated
notify	a GDestroyNotify.	[allow-none]
user_data	user data to call `notify` with.	[allow-none]

gst_gl_memory_setup_buffer ()

gboolean
gst_gl_memory_setup_buffer (GstGLMemoryAllocator *allocator,
                            GstBuffer *buffer,
                            GstGLVideoAllocationParams *params);

Parameters

allocator	the `GstGLMemoryAllocator` to allocate from
buffer	a GstBuffer to setup
params	the GstGLVideoAllocationParams to allocate with

Returns

whether the buffer was correctly setup

gst_gl_texture_type_from_format ()

GstVideoGLTextureType
gst_gl_texture_type_from_format (GstGLContext *context,
                                 GstVideoFormat v_format,
                                 guint plane);

gst_is_gl_memory ()

gboolean
gst_is_gl_memory (GstMemory *mem);

Parameters

mem

a GstMemory

Returns

whether the memory at mem is a GstGLMemoryPBO

Types and Values

GstGLMemory

typedef struct {
  GstGLBaseMemory           mem;

  guint                     tex_id;
  GstGLTextureTarget        tex_target;
  GstVideoGLTextureType     tex_type;
  GstVideoInfo              info;
  GstVideoAlignment         valign;
  guint                     plane;
  gfloat                    tex_scaling[2];
} GstGLMemory;

Represents information about a GL texture

Members

GstGLBaseMemory `mem`;	the parent object
guint `tex_id`;	the GL texture id for this memory
GstGLTextureTarget `tex_target`;	the GL texture target for this memory
GstVideoGLTextureType `tex_type`;	the texture type
GstVideoInfo `info`;	the texture's GstVideoInfo
GstVideoAlignment `valign`;	data alignment for system memory mapping
guint `plane`;	data plane in `info`
gfloat `tex_scaling`[2];	GL shader scaling parameters for `valign` and/or width/height

GstGLMemory

Functions

Types and Values

Description

Functions

GST_GL_MEMORY_ALLOCATOR()

gst_gl_memory_init ()

Parameters

gst_gl_memory_setup_buffer ()

Parameters

Returns

gst_gl_texture_type_from_format ()

gst_is_gl_memory ()

Parameters

Returns

Types and Values

GstGLMemory

Members

See Also