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15d0c04933
This patch provides the basic infrastructure required for this. Upload and Download has been ported to this. Has the nice effect of allowing GstGLMemory to be our refcounted texture object for any texture type (not just RGBA). Should not lose any features/video formats.
194 lines
6.2 KiB
C
194 lines
6.2 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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_MEMORY_H_
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#define _GST_GL_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/video/video.h>
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#include <gst/gl/gl.h>
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G_BEGIN_DECLS
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#define GST_TYPE_GL_ALLOCATOR (gst_gl_allocator_get_type())
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GType gst_gl_allocator_get_type(void);
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#define GST_IS_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
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#define GST_IS_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_ALLOCATOR))
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#define GST_GL_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocator))
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#define GST_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR_CAST(obj) ((GstGLAllocator *)(obj))
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/**
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* GstGLMemoryFlags:
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*
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* Flags indicating the current state of a #GstGLMemory
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*/
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typedef enum
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{
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GST_GL_MEMORY_FLAG_DOWNLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 0),
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GST_GL_MEMORY_FLAG_UPLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 1),
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GST_GL_MEMORY_FLAG_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 2),
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GST_GL_MEMORY_FLAG_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 3)
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} GstGLMemoryFlags;
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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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* GstGLMemory:
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* @mem: the parent object
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* @context: the #GstGLContext to use for GL operations
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* @tex_id: the texture id for this memory
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* @v_format: the video format of this texture
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* @gl_format: the format of the texture
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* @width: width of the texture
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* @height: height of the texture
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* @download: the object used to download this texture into @v_format
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* @upload: the object used to upload this texture from @v_format
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*
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* Represents information about a GL texture
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*/
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struct _GstGLMemory
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{
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GstMemory mem;
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GstGLContext *context;
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guint tex_id;
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GstVideoGLTextureType tex_type;
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gint width;
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gint height;
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gint stride;
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gfloat tex_scaling[2];
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/* <private> */
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GstMapFlags map_flags;
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gpointer data;
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gboolean data_wrapped;
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gboolean texture_wrapped;
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GDestroyNotify notify;
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gpointer user_data;
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guint pbo;
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};
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/**
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* GST_GL_MEMORY_ALLOCATOR:
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*
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* The name of the GL memore allocator
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*/
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#define GST_GL_MEMORY_ALLOCATOR "GLMemory"
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/**
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* GST_GL_MEMORY_FLAGS:
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* @mem: a #GstGLMemory
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*
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* Get the currently set flags on @mem
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*/
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#define GST_GL_MEMORY_FLAGS(mem) GST_MEMORY_FLAGS(mem)
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/**
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* GST_GL_MEMORY_FLAG_IS_SET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Whether @flag is set on @mem
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*/
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#define GST_GL_MEMORY_FLAG_IS_SET(mem,flag) GST_MEMORY_FLAG_IS_SET(mem,flag)
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/**
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* GST_GL_MEMORY_FLAG_SET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Set @flag on @mem
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*/
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#define GST_GL_MEMORY_FLAG_SET(mem,flag) GST_MINI_OBJECT_FLAG_SET(mem,flag)
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/**
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* GST_GL_MEMORY_FLAG_UNSET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Unset @flag on @mem
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*/
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#define GST_GL_MEMORY_FLAG_UNSET(mem,flag) GST_MEMORY_FLAG_UNSET(mem,flag)
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void gst_gl_memory_init (void);
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gboolean gst_is_gl_memory (GstMemory * mem);
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GstMemory * gst_gl_memory_alloc (GstGLContext * context, GstVideoGLTextureType tex_type,
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gint width, gint height, gint stride);
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GstGLMemory * gst_gl_memory_wrapped (GstGLContext * context, GstVideoGLTextureType tex_type,
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gint width, gint height, gint stride,
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gpointer data, gpointer user_data,
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GDestroyNotify notify);
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GstGLMemory * gst_gl_memory_wrapped_texture (GstGLContext * context, guint texture_id,
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GstVideoGLTextureType tex_type,
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gint width, gint height,
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gpointer user_data, GDestroyNotify notify);
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gboolean gst_gl_memory_copy_into_texture (GstGLMemory *gl_mem, guint tex_id,
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GstVideoGLTextureType tex_type,
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gint width, gint height, gboolean respecify);
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gboolean gst_gl_memory_setup_buffer (GstGLContext * context, GstVideoInfo * info,
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GstBuffer * buffer);
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gboolean gst_gl_memory_setup_wrapped (GstGLContext * context, GstVideoInfo * info,
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gpointer data[GST_VIDEO_MAX_PLANES],
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GstGLMemory *textures[GST_VIDEO_MAX_PLANES]);
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GstVideoGLTextureType gst_gl_texture_type_from_format (GstVideoFormat v_format, guint plane);
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/**
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* GstGLAllocator
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*
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* Opaque #GstGLAllocator struct
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*/
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struct _GstGLAllocator
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{
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GstAllocator parent;
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};
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/**
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* GstGLAllocatorClass:
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*
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* The #GstGLAllocatorClass only contains private data
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*/
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struct _GstGLAllocatorClass
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{
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GstAllocatorClass parent_class;
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};
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G_END_DECLS
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#endif /* _GST_GL_MEMORY_H_ */
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