/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _GST_GL_BASE_MEMORY_H_
#define _GST_GL_BASE_MEMORY_H_
#include <gst/gst.h>
#include <gst/gstallocator.h>
#include <gst/gstmemory.h>
#include <gst/gl/gstgl_fwd.h>
G_BEGIN_DECLS
#define GST_TYPE_GL_BASE_MEMORY_ALLOCATOR (gst_gl_base_memory_allocator_get_type())
GType gst_gl_base_memory_allocator_get_type(void);
#define GST_IS_GL_BASE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
#define GST_IS_GL_BASE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR))
#define GST_GL_BASE_MEMORY_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocatorClass))
#define GST_GL_BASE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocator))
#define GST_GL_BASE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocatorClass))
#define GST_GL_BASE_MEMORY_ALLOCATOR_CAST(obj) ((GstGLBaseMemoryAllocator *)(obj))
#define GST_GL_BASE_MEMORY_CAST(mem) ((GstGLBaseMemory *)mem)
GQuark gst_gl_base_memory_error_quark (void);
#define GST_GL_BASE_MEMORY_ERROR (gst_gl_base_memory_error_quark ())
typedef enum
{
GST_GL_BASE_MEMORY_ERROR_FAILED,
GST_GL_BASE_MEMORY_ERROR_OLD_LIBS,
GST_GL_BASE_MEMORY_ERROR_RESOURCE_UNAVAILABLE,
} GstGLBaseMemoryError;
typedef enum
{
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 0),
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 1)
} GstGLBaseMemoryTransfer;
/**
* GST_MAP_GL:
*
* Flag indicating that we should map the GL object instead of to system memory.
*
* Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
* you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
* #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
*/
#define GST_MAP_GL (GST_MAP_FLAG_LAST << 1)
/**
* GstGLBaseMemory:
* @mem: the parent object
* @context: the #GstGLContext to use for GL operations
*
* Represents information about a GL memory object
*/
struct _GstGLBaseMemory
{
GstMemory mem;
GstGLContext *context;
/* <protected> */
GMutex lock;
GstMapFlags map_flags; /* cumulative map flags */
gint map_count;
gint gl_map_count;
gpointer data;
/* <private> */
gsize alloc_size; /* because maxsize is used for mapping */
gpointer alloc_data;
GDestroyNotify notify;
gpointer user_data;
};
typedef struct _GstGLAllocationParams GstGLAllocationParams;
/* subclass has to compose with the parent class */
typedef void (*GstGLAllocationParamsCopyFunc) (GstGLAllocationParams * src, GstGLAllocationParams * dest);
/* subclass has to compose with the parent class */
typedef void (*GstGLAllocationParamsFreeFunc) (gpointer params);
#define GST_TYPE_GL_ALLOCATION_PARAMS (gst_gl_allocation_params_get_type())
GType gst_gl_allocation_params_get_type (void);
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC (1 << 0)
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM (1 << 1)
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE (1 << 2)
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER (1 << 16)
/* Because GstAllocationParams is not subclassable, start our own subclass
* chain. FIXME: 2.0 make GstAllocationParams subclassable */
struct _GstGLAllocationParams
{
gsize struct_size;
GstGLAllocationParamsCopyFunc copy;
GstGLAllocationParamsFreeFunc free;
guint alloc_flags;
gsize alloc_size;
GstAllocationParams *alloc_params;
GstGLContext *context;
GDestroyNotify notify;
gpointer user_data;
/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM only */
gpointer wrapped_data;
/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE only */
guint gl_handle;
};
gboolean gst_gl_allocation_params_init (GstGLAllocationParams * params,
gsize struct_size,
guint alloc_flags,
GstGLAllocationParamsCopyFunc copy,
GstGLAllocationParamsFreeFunc free,
GstGLContext * context,
gsize alloc_size,
GstAllocationParams * alloc_params,
gpointer wrapped_data,
guint gl_handle,
gpointer user_data,
GDestroyNotify notify);
/* free with gst_gl_allocation_params_free */
GstGLAllocationParams * gst_gl_allocation_params_copy (GstGLAllocationParams * src);
void gst_gl_allocation_params_free (GstGLAllocationParams * params);
/* subclass usage */
void gst_gl_allocation_params_free_data (GstGLAllocationParams * params);
/* subclass usage */
void gst_gl_allocation_params_copy_data (GstGLAllocationParams * src,
GstGLAllocationParams * dest);
typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorAllocFunction) (GstGLBaseMemoryAllocator * allocator,
GstGLAllocationParams * params);
typedef gboolean (*GstGLBaseMemoryAllocatorCreateFunction) (GstGLBaseMemory * mem,
GError ** error);
typedef gpointer (*GstGLBaseMemoryAllocatorMapFunction) (GstGLBaseMemory * mem,
GstMapInfo * info,
gsize maxsize);
typedef void (*GstGLBaseMemoryAllocatorUnmapFunction) (GstGLBaseMemory * mem,
GstMapInfo * info);
typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorCopyFunction) (GstGLBaseMemory * mem,
gssize offset,
gssize size);
typedef void (*GstGLBaseMemoryAllocatorDestroyFunction) (GstGLBaseMemory * mem);
/**
* GstGLBaseMemoryAllocator
*
* Opaque #GstGLAllocator struct
*/
struct _GstGLBaseMemoryAllocator
{
GstAllocator parent;
GstMemoryCopyFunction fallback_mem_copy;
};
/**
* GstGLBaseMemoryAllocatorClass:
*
* The #GstGLBaseMemoryAllocatorClass only contains private data
*/
struct _GstGLBaseMemoryAllocatorClass
{
GstAllocatorClass parent_class;
GstGLBaseMemoryAllocatorAllocFunction alloc;
GstGLBaseMemoryAllocatorCreateFunction create;
GstGLBaseMemoryAllocatorMapFunction map;
#if 0
GstGLBaseMemoryAllocatorFlushFunction flush; /* make CPU writes visible to the GPU */
GstGLBaseMemoryAllocatorInvalidateFunction invalidate; /* make GPU writes visible to the CPU */
#endif
GstGLBaseMemoryAllocatorUnmapFunction unmap;
GstGLBaseMemoryAllocatorCopyFunction copy;
GstGLBaseMemoryAllocatorDestroyFunction destroy;
};
#include <gst/gl/gl.h>
/**
* GST_GL_BASE_MEMORY_ALLOCATOR_NAME:
*
* The name of the GL buffer allocator
*/
#define GST_GL_BASE_MEMORY_ALLOCATOR_NAME "GLBaseMemory"
void gst_gl_base_memory_init_once (void);
gboolean gst_is_gl_base_memory (GstMemory * mem);
void gst_gl_base_memory_init (GstGLBaseMemory * mem,
GstAllocator * allocator,
GstMemory * parent,
GstGLContext * context,
GstAllocationParams * params,
gsize maxsize,
gpointer user_data,
GDestroyNotify notify);
gboolean gst_gl_base_memory_alloc_data (GstGLBaseMemory * gl_mem);
gboolean gst_gl_base_memory_memcpy (GstGLBaseMemory * src,
GstGLBaseMemory * dest,
gssize offset,
gssize size);
GstGLBaseMemory * gst_gl_base_memory_alloc (GstGLBaseMemoryAllocator * allocator,
GstGLAllocationParams * params);
G_END_DECLS
#endif /* _GST_GL_BUFFER_H_ */