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GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstAllocator ╰── GstGLBaseMemoryAllocator ╰── GstGLBufferAllocator
GstGLBuffer is a GstMemory subclass providing support for the mapping of GL buffers.
Data is uploaded or downloaded from the GPU as is necessary.
void
gst_gl_buffer_init_once (void);
Initializes the GL Buffer allocator. It is safe to call this function multiple times. This must be called before any other GstGLBuffer operation.
Since: 1.8
GstGLBuffer * gst_gl_buffer_alloc (GstGLContext *context,guint gl_target,guint gl_usage,GstAllocationParams *params,gsize maxsize);
GstGLBufferAllocationParams * gst_gl_buffer_allocation_params_new (GstGLContext *context,gsize alloc_size,GstAllocationParams *alloc_params,guint gl_target,guint gl_usage);
context |
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alloc_size |
the size in bytes to allocate |
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alloc_params |
the GstAllocationParams for |
[allow-none] |
gl_target |
the OpenGL target to allocate |
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gl_usage |
the OpenGL usage hint to allocate with |
Since: 1.8
typedef struct {
GstGLBaseMemory mem;
guint id;
guint target; /* XXX: put this in the allocator? */
guint usage_hints; /* XXX: put this in the allocator? */
} GstGLBuffer;
Represents information about a GL buffer
GstGLBaseMemory |
the parent object |
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guint |
the buffer id for this memory |
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guint |
the OpenGL target of this texture for binding purposes |
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guint |
the OpenGL usage hints this buffer was created with |
struct GstGLBufferAllocationParams {
GstGLAllocationParams parent;
guint gl_target;
guint gl_usage;
};
GstGLAllocationParams |
parent object |
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guint |
the OpenGL target to bind the buffer to |
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guint |
the OpenGL usage hint to create the buffer with |
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER (1 << 4)
typedef struct _GstGLBufferAllocator GstGLBufferAllocator;
Opaque GstGLAllocator struct
typedef struct {
GstGLBaseMemoryAllocatorClass parent_class;
} GstGLBufferAllocatorClass;
The GstGLBufferAllocatorClass only contains private data
#define GST_GL_BUFFER_ALLOCATOR_NAME "GLBuffer"
The name of the GL buffer allocator