mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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c5b5ef16d3
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
421 lines
14 KiB
C
421 lines
14 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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/**
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* GST_GL_BASE_MEMORY_ERROR:
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*
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* Error domain for GStreamer's GL memory module. Errors in this domain will be
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* from the #GstGLBaseMemoryError enumeration
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*/
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#define GST_TYPE_GL_BASE_MEMORY (gst_gl_base_memory_get_type())
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GST_GL_API
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GType gst_gl_base_memory_get_type(void);
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#define GST_TYPE_GL_BASE_MEMORY_ALLOCATOR (gst_gl_base_memory_allocator_get_type())
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GST_GL_API
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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_BASE_MEMORY_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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GST_GL_API
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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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/**
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* GstGLBaseMemoryError:
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* @GST_GL_BASE_MEMORY_ERROR_FAILED: generic faliure
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* @GST_GL_BASE_MEMORY_ERROR_OLD_LIBS: the implementation is too old and doesn't
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* implement enough features
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* @GST_GL_BASE_MEMORY_ERROR_RESOURCE_UNAVAILABLE: a resource could not be found
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*/
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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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/**
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* GstGLBaseMemoryTransfer:
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* @GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD: the texture needs downloading
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* to the data pointer
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* @GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD: the data pointer needs uploading
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* to the texture
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*/
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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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GstGLQuery *query;
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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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gpointer _padding[GST_PADDING];
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};
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typedef struct _GstGLAllocationParams GstGLAllocationParams;
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/**
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* GstGLAllocationParamsCopyFunc:
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* @src: the source #GstGLAllocationParams to copy from
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* @dest: the source #GstGLAllocationParams to copy
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*
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* Copies the parameters from @src into @dest. The subclass must compose copy
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* functions from the superclass.
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*/
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typedef void (*GstGLAllocationParamsCopyFunc) (GstGLAllocationParams * src, GstGLAllocationParams * dest);
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/**
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* GstGLAllocationParamsFreeFunc:
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* @params: a #GstGLAllocationParams
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*
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* Free any dynamically allocated data. The subclass must call the superclass'
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* free.
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*/
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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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GST_GL_API
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GType gst_gl_allocation_params_get_type (void);
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/**
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* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC:
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*
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* GL Allocation flag indicating that the implementation should allocate the
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* necessary resources.
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*/
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC (1 << 0)
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/**
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* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM:
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*
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* GL Allocation flag for using the provided system memory data as storage.
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*/
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM (1 << 1)
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/**
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* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE:
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*
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* GL Allocation flag for using the provided GPU handle as storage.
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*/
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE (1 << 2)
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/**
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* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER:
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*
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* Values >= than #GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER can be used for
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* user-defined purposes.
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*/
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER (1 << 16)
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/**
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* GstGLAllocationParams:
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* @struct_size: the size of the struct (including and subclass data)
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* @copy: a #GstGLAllocationParamsCopyFunc
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* @free: a #GstGLAllocationParamsFreeFunc
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* @alloc_flags: allocation flags
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* @alloc_size: the allocation size
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* @alloc_params: the #GstAllocationParams
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* @context: a #GstGLContext
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* @notify: a #GDestroyNotify
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* @user_data: argument to call @notify with
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* @wrapped_data: the wrapped data pointer
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* @gl_handle: the wrapped OpenGL handle
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*/
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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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gpointer gl_handle;
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/* <private> */
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gpointer _padding[GST_PADDING];
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};
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GST_GL_API
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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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gpointer 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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GST_GL_API
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GstGLAllocationParams * gst_gl_allocation_params_copy (GstGLAllocationParams * src);
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GST_GL_API
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void gst_gl_allocation_params_free (GstGLAllocationParams * params);
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/* subclass usage */
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GST_GL_API
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void gst_gl_allocation_params_free_data (GstGLAllocationParams * params);
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/* subclass usage */
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GST_GL_API
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void gst_gl_allocation_params_copy_data (GstGLAllocationParams * src,
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GstGLAllocationParams * dest);
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/**
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* GstGLBaseMemoryAllocatorAllocFunction:
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* @allocator: a #GstGLBaseMemoryAllocator
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* @params: the #GstGLAllocationParams to allocate the memory with
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*
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* Note: not called with a GL context current
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*
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* Returns: a newly allocated #GstGLBaseMemory from @allocator and @params
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*
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* Since: 1.8
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*/
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorAllocFunction) (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params);
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/**
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* GstGLBaseMemoryAllocatorCreateFunction:
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* @mem: a #GstGLBaseMemory
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* @error: a #GError to use on failure
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*
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* As this virtual method is called with an OpenGL context current, use this
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* function to allocate and OpenGL resources needed for your application
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*
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* Returns: whether the creation succeeded
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*
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* Since: 1.8
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*/
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typedef gboolean (*GstGLBaseMemoryAllocatorCreateFunction) (GstGLBaseMemory * mem,
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GError ** error);
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/**
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* GstGLBaseMemoryAllocatorMapFunction:
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* @mem: a #GstGLBaseMemory
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* @info: a #GstMapInfo to map with
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* @maxsize: the size to map
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*
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* Also see gst_memory_map();
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*
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* Returns: the mapped pointer
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*
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* Since: 1.8
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*/
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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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/**
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* GstGLBaseMemoryAllocatorUnmapFunction:
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* @mem: a #GstGLBaseMemory
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* @info: a #GstMapInfo to map with
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*
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* Also see gst_memory_unmap();
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*
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* Since: 1.8
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*/
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typedef void (*GstGLBaseMemoryAllocatorUnmapFunction) (GstGLBaseMemory * mem,
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GstMapInfo * info);
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/**
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* GstGLBaseMemoryAllocatorCopyFunction:
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* @mem: a #GstGLBaseMemory
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* @offset: the offset to copy from
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* @size: the number of bytes to copy
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*
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* Also see gst_memory_copy();
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*
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* Returns: the newly copied #GstGLMemory or %NULL
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*
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* Since: 1.8
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*/
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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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/**
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* GstGLBaseMemoryAllocatorDestroyFunction:
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* @mem: a #GstGLBaseMemory
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*
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* Destroy any resources allocated throughout the lifetime of @mem
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*
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* Since: 1.8
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*/
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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 #GstGLBaseMemoryAllocator struct
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*
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* Since: 1.8
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*/
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struct _GstGLBaseMemoryAllocator
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{
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/*< private >*/
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GstAllocator parent;
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GstMemoryCopyFunction fallback_mem_copy;
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gpointer _padding[GST_PADDING];
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};
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/**
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* GstGLBaseMemoryAllocatorClass:
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* @parent_class: the parent class
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* @alloc: a #GstGLBaseMemoryAllocatorAllocFunction
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* @create: a #GstGLBaseMemoryAllocatorCreateFunction
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* @map: a #GstGLBaseMemoryAllocatorMapFunction
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* @unmap: a #GstGLBaseMemoryAllocatorUnmapFunction
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* @copy: a #GstGLBaseMemoryAllocatorCopyFunction
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* @destroy: a #GstGLBaseMemoryAllocatorDestroyFunction
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*
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* Since: 1.8
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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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GstGLBaseMemoryAllocatorUnmapFunction unmap;
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GstGLBaseMemoryAllocatorCopyFunction copy;
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GstGLBaseMemoryAllocatorDestroyFunction destroy;
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/* <private> */
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gpointer _padding[GST_PADDING];
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};
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#include <gst/gl/gstglconfig.h>
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#include <gst/gl/gstglformat.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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* Since: 1.8
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*/
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#define GST_GL_BASE_MEMORY_ALLOCATOR_NAME "GLBaseMemory"
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GST_GL_API
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void gst_gl_base_memory_init_once (void);
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GST_GL_API
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gboolean gst_is_gl_base_memory (GstMemory * mem);
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GST_GL_API
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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 size,
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gpointer user_data,
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GDestroyNotify notify);
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GST_GL_API
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gboolean gst_gl_base_memory_alloc_data (GstGLBaseMemory * gl_mem);
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GST_GL_API
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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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GST_GL_API
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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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