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/*
* 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_MEMORY_H_
#define _GST_GL_MEMORY_H_
#include <gst/gst.h>
#include <gst/gstallocator.h>
#include <gst/gstmemory.h>
#include <gst/video/video.h>
#include <gst/gl/gstglbasememory.h>
G_BEGIN_DECLS
#define GST_TYPE_GL_MEMORY_ALLOCATOR (gst_gl_memory_allocator_get_type())
GType gst_gl_memory_allocator_get_type(void);
#define GST_IS_GL_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_MEMORY_ALLOCATOR))
#define GST_IS_GL_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_MEMORY_ALLOCATOR))
#define GST_GL_MEMORY_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_MEMORY_ALLOCATOR, GstGLMemoryAllocatorClass))
#define GST_GL_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_MEMORY_ALLOCATOR, GstGLMemoryAllocator))
#define GST_GL_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_MEMORY_ALLOCATOR, GstGLMemoryAllocatorClass))
#define GST_GL_MEMORY_ALLOCATOR_CAST(obj) ((GstGLMemoryAllocator *)(obj))
#define GST_GL_MEMORY_CAST(obj) ((GstGLMemory *) obj)
#define GST_CAPS_FEATURE_MEMORY_GL_MEMORY "memory:GLMemory"
#define GST_GL_MEMORY_VIDEO_FORMATS_STR \
"{ RGBA, BGRA, RGBx, BGRx, ARGB, ABGR, xRGB, xBGR, RGB, BGR, RGB16, BGR16, " \
"AYUV, I420, YV12, NV12, NV21, YUY2, UYVY, Y41B, Y42B, Y444, " \
"GRAY8, GRAY16_LE, GRAY16_BE }"
/**
* GstGLMemory:
* @mem: the parent object
* @context: the #GstGLContext to use for GL operations
* @tex_id: the GL texture id for this memory
* @tex_target: the GL texture target for this memory
* @tex_type: the texture type
* @info: the texture's #GstVideoInfo
* @valign: data alignment for system memory mapping
* @plane: data plane in @info
* @tex_scaling: GL shader scaling parameters for @valign and/or width/height
*
* Represents information about a GL texture
*/
struct _GstGLMemory
{
GstGLBaseMemory mem;
guint tex_id;
GstGLTextureTarget tex_target;
GstVideoGLTextureType tex_type;
GstVideoInfo info;
GstVideoAlignment valign;
guint plane;
gfloat tex_scaling[2];
/* <protected> */
gboolean texture_wrapped;
guint unpack_length;
guint tex_width;
};
typedef struct _GstGLVideoAllocationParams GstGLVideoAllocationParams;
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_VIDEO (1 << 3)
struct _GstGLVideoAllocationParams
{
GstGLAllocationParams parent;
GstVideoInfo *v_info;
guint plane;
GstVideoAlignment *valign;
GstGLTextureTarget target;
};
gboolean gst_gl_video_allocation_params_init_full (GstGLVideoAllocationParams * params,
gsize struct_size,
guint alloc_flags,
GstGLAllocationParamsCopyFunc copy,
GstGLAllocationParamsFreeFunc free,
GstGLContext * context,
GstAllocationParams * alloc_params,
GstVideoInfo * v_info,
guint plane,
GstVideoAlignment * valign,
GstGLTextureTarget target,
gpointer wrapped_data,
guint gl_handle,
gpointer user_data,
GDestroyNotify notify);
GstGLVideoAllocationParams * gst_gl_video_allocation_params_new (GstGLContext * context,
GstAllocationParams * alloc_params,
GstVideoInfo * v_info,
guint plane,
GstVideoAlignment * valign,
GstGLTextureTarget target);
GstGLVideoAllocationParams * gst_gl_video_allocation_params_new_wrapped_data (GstGLContext * context,
GstAllocationParams * alloc_params,
GstVideoInfo * v_info,
guint plane,
GstVideoAlignment * valign,
GstGLTextureTarget target,
gpointer wrapped_data,
gpointer user_data,
GDestroyNotify notify);
GstGLVideoAllocationParams * gst_gl_video_allocation_params_new_wrapped_texture (GstGLContext * context,
GstAllocationParams * alloc_params,
GstVideoInfo * v_info,
guint plane,
GstVideoAlignment * valign,
GstGLTextureTarget target,
guint tex_id,
gpointer user_data,
GDestroyNotify notify);
/* subclass usage */
void gst_gl_video_allocation_params_free_data (GstGLVideoAllocationParams * params);
/* subclass usage */
void gst_gl_video_allocation_params_copy_data (GstGLVideoAllocationParams * src_vid,
GstGLVideoAllocationParams * dest_vid);
/**
* GstGLMemoryAllocator
*
* Opaque #GstGLMemoryAllocator struct
*/
struct _GstGLMemoryAllocator
{
GstGLBaseMemoryAllocator parent;
};
/**
* GstGLMemoryAllocatorClass:
*
* The #GstGLMemoryAllocatorClass only contains private data
*/
struct _GstGLMemoryAllocatorClass
{
GstGLBaseMemoryAllocatorClass parent_class;
GstGLBaseMemoryAllocatorMapFunction map;
GstGLBaseMemoryAllocatorCopyFunction copy;
GstGLBaseMemoryAllocatorUnmapFunction unmap;
};
#include <gst/gl/gstglbasememory.h>
/**
* GST_GL_MEMORY_ALLOCATOR_NAME:
*
* The name of the GL memory allocator
*/
#define GST_GL_MEMORY_ALLOCATOR_NAME "GLMemory"
void gst_gl_memory_init_once (void);
gboolean gst_is_gl_memory (GstMemory * mem);
void gst_gl_memory_init (GstGLMemory * mem,
GstAllocator * allocator,
GstMemory * parent,
GstGLContext * context,
GstGLTextureTarget target,
GstAllocationParams *params,
GstVideoInfo * info,
guint plane,
GstVideoAlignment *valign,
gpointer user_data,
GDestroyNotify notify);
gboolean gst_gl_memory_copy_into (GstGLMemory *gl_mem,
guint tex_id,
GstGLTextureTarget target,
GstVideoGLTextureType tex_type,
gint width,
gint height);
gboolean gst_gl_memory_copy_teximage (GstGLMemory * src,
guint tex_id,
GstGLTextureTarget out_target,
GstVideoGLTextureType out_tex_type,
gint width,
gint height);
gboolean gst_gl_memory_read_pixels (GstGLMemory * gl_mem,
gpointer read_pointer);
void gst_gl_memory_texsubimage (GstGLMemory * gl_mem,
gpointer read_pointer);
/* accessors */
gint gst_gl_memory_get_texture_width (GstGLMemory * gl_mem);
gint gst_gl_memory_get_texture_height (GstGLMemory * gl_mem);
GstVideoGLTextureType gst_gl_memory_get_texture_type (GstGLMemory * gl_mem);
GstGLTextureTarget gst_gl_memory_get_texture_target (GstGLMemory * gl_mem);
guint gst_gl_memory_get_texture_id (GstGLMemory * gl_mem);
gboolean gst_gl_memory_setup_buffer (GstGLMemoryAllocator * allocator,
GstBuffer * buffer,
GstGLVideoAllocationParams * params);
GstGLMemoryAllocator * gst_gl_memory_allocator_get_default (GstGLContext *context);
G_END_DECLS
#endif /* _GST_GL_MEMORY_H_ */
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