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f5dfc0ca35
e.g when wrapping a data pointer we don't want to map/unmap off the end of pointer with the alignment bytes. Instead track that information separately as maxsize is used for mapping by GstMemory and thus represents a size without any alignment padding bytes.
238 lines
10 KiB
C
238 lines
10 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GST_GL_BASE_MEMORY_H_
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#define _GST_GL_BASE_MEMORY_H_
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#include <gst/gst.h>
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#include <gst/gstallocator.h>
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#include <gst/gstmemory.h>
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#include <gst/gl/gstgl_fwd.h>
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G_BEGIN_DECLS
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#define GST_TYPE_GL_BASE_MEMORY_ALLOCATOR (gst_gl_base_memory_allocator_get_type())
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GType gst_gl_base_memory_allocator_get_type(void);
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#define GST_IS_GL_BASE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
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#define GST_IS_GL_BASE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR))
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#define GST_GL_BASE_MEMORY_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocatorClass))
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#define GST_GL_BASE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocator))
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#define GST_GL_BASE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_BASE_MEMORY_ALLOCATOR, GstGLBaseMemoryAllocatorClass))
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#define GST_GL_BASE_MEMORY_ALLOCATOR_CAST(obj) ((GstGLBaseMemoryAllocator *)(obj))
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#define GST_GL_BASE_MEMORY_CAST(mem) ((GstGLBaseMemory *)mem)
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GQuark gst_gl_base_memory_error_quark (void);
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#define GST_GL_BASE_MEMORY_ERROR (gst_gl_base_memory_error_quark ())
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typedef enum
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{
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GST_GL_BASE_MEMORY_ERROR_FAILED,
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GST_GL_BASE_MEMORY_ERROR_OLD_LIBS,
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GST_GL_BASE_MEMORY_ERROR_RESOURCE_UNAVAILABLE,
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} GstGLBaseMemoryError;
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typedef enum
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{
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GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 0),
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GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 1)
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} GstGLBaseMemoryTransfer;
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/**
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* GST_MAP_GL:
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*
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* Flag indicating that we should map the GL object instead of to system memory.
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*
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* Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
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* you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
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* #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
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*/
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#define GST_MAP_GL (GST_MAP_FLAG_LAST << 1)
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/**
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* GstGLBaseMemory:
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* @mem: the parent object
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* @context: the #GstGLContext to use for GL operations
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*
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* Represents information about a GL memory object
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*/
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struct _GstGLBaseMemory
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{
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GstMemory mem;
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GstGLContext *context;
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/* <protected> */
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GMutex lock;
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GstMapFlags map_flags; /* cumulative map flags */
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gint map_count;
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gint gl_map_count;
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gpointer data;
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/* <private> */
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gsize alloc_size; /* because maxsize is used for mapping */
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gpointer alloc_data;
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GDestroyNotify notify;
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gpointer user_data;
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};
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typedef struct _GstGLAllocationParams GstGLAllocationParams;
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/* subclass has to compose with the parent class */
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typedef void (*GstGLAllocationParamsCopyFunc) (GstGLAllocationParams * src, GstGLAllocationParams * dest);
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/* subclass has to compose with the parent class */
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typedef void (*GstGLAllocationParamsFreeFunc) (gpointer params);
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#define GST_TYPE_GL_ALLOCATION_PARAMS (gst_gl_allocation_params_get_type())
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GType gst_gl_allocation_params_get_type (void);
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC (1 << 0)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM (1 << 1)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE (1 << 2)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER (1 << 16)
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/* Because GstAllocationParams is not subclassable, start our own subclass
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* chain. FIXME: 2.0 make GstAllocationParams subclassable */
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struct _GstGLAllocationParams
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{
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gsize struct_size;
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GstGLAllocationParamsCopyFunc copy;
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GstGLAllocationParamsFreeFunc free;
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guint alloc_flags;
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gsize alloc_size;
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GstAllocationParams *alloc_params;
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GstGLContext *context;
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GDestroyNotify notify;
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gpointer user_data;
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/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM only */
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gpointer wrapped_data;
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/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE only */
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guint gl_handle;
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};
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gboolean gst_gl_allocation_params_init (GstGLAllocationParams * params,
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gsize struct_size,
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guint alloc_flags,
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GstGLAllocationParamsCopyFunc copy,
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GstGLAllocationParamsFreeFunc free,
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GstGLContext * context,
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gsize alloc_size,
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GstAllocationParams * alloc_params,
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gpointer wrapped_data,
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guint gl_handle,
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gpointer user_data,
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GDestroyNotify notify);
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/* free with gst_gl_allocation_params_free */
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GstGLAllocationParams * gst_gl_allocation_params_copy (GstGLAllocationParams * src);
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void gst_gl_allocation_params_free (GstGLAllocationParams * params);
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/* subclass usage */
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void gst_gl_allocation_params_free_data (GstGLAllocationParams * params);
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/* subclass usage */
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void gst_gl_allocation_params_copy_data (GstGLAllocationParams * src,
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GstGLAllocationParams * dest);
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorAllocFunction) (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params);
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typedef gboolean (*GstGLBaseMemoryAllocatorCreateFunction) (GstGLBaseMemory * mem,
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GError ** error);
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typedef gpointer (*GstGLBaseMemoryAllocatorMapFunction) (GstGLBaseMemory * mem,
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GstMapInfo * info,
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gsize maxsize);
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typedef void (*GstGLBaseMemoryAllocatorUnmapFunction) (GstGLBaseMemory * mem,
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GstMapInfo * info);
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorCopyFunction) (GstGLBaseMemory * mem,
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gssize offset,
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gssize size);
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typedef void (*GstGLBaseMemoryAllocatorDestroyFunction) (GstGLBaseMemory * mem);
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/**
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* GstGLBaseMemoryAllocator
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*
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* Opaque #GstGLAllocator struct
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*/
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struct _GstGLBaseMemoryAllocator
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{
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GstAllocator parent;
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GstMemoryCopyFunction fallback_mem_copy;
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};
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/**
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* GstGLBaseMemoryAllocatorClass:
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*
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* The #GstGLBaseMemoryAllocatorClass only contains private data
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*/
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struct _GstGLBaseMemoryAllocatorClass
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{
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GstAllocatorClass parent_class;
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GstGLBaseMemoryAllocatorAllocFunction alloc;
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GstGLBaseMemoryAllocatorCreateFunction create;
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GstGLBaseMemoryAllocatorMapFunction map;
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#if 0
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GstGLBaseMemoryAllocatorFlushFunction flush; /* make CPU writes visible to the GPU */
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GstGLBaseMemoryAllocatorInvalidateFunction invalidate; /* make GPU writes visible to the CPU */
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#endif
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GstGLBaseMemoryAllocatorUnmapFunction unmap;
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GstGLBaseMemoryAllocatorCopyFunction copy;
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GstGLBaseMemoryAllocatorDestroyFunction destroy;
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};
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#include <gst/gl/gl.h>
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/**
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* GST_GL_BASE_MEMORY_ALLOCATOR_NAME:
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*
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* The name of the GL buffer allocator
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*/
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#define GST_GL_BASE_MEMORY_ALLOCATOR_NAME "GLBaseMemory"
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void gst_gl_base_memory_init_once (void);
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gboolean gst_is_gl_base_memory (GstMemory * mem);
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void gst_gl_base_memory_init (GstGLBaseMemory * mem,
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GstAllocator * allocator,
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GstMemory * parent,
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GstGLContext * context,
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GstAllocationParams * params,
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gsize maxsize,
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gpointer user_data,
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GDestroyNotify notify);
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gboolean gst_gl_base_memory_alloc_data (GstGLBaseMemory * gl_mem);
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gboolean gst_gl_base_memory_memcpy (GstGLBaseMemory * src,
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GstGLBaseMemory * dest,
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gssize offset,
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gssize size);
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GstGLBaseMemory * gst_gl_base_memory_alloc (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params);
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G_END_DECLS
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#endif /* _GST_GL_BUFFER_H_ */
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