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/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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/gstglbasebuffer.h>
#include <gst/gl/gl.h>
G_BEGIN_DECLS
#define GST_TYPE_GL_ALLOCATOR (gst_gl_allocator_get_type())
GType gst_gl_allocator_get_type(void);
#define GST_IS_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
#define GST_IS_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_ALLOCATOR))
#define GST_GL_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
#define GST_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocator))
#define GST_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
#define GST_GL_ALLOCATOR_CAST(obj) ((GstGLAllocator *)(obj))
typedef enum _GstGLMemoryTransfer
{
/* force a transfer between the texture and the PBO (if available) */
GST_GL_MEMORY_TRANSFER_NEED_UPLOAD = (1 << 0),
GST_GL_MEMORY_TRANSFER_NEED_DOWNLOAD = (1 << 1),
} GstGLMemoryTransfer;
#define GST_GL_MEMORY_ADD_TRANSFER(mem,state) ((GstGLMemory *)mem)->transfer_state |= state
/**
* 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
{
GstGLBaseBuffer mem;
guint tex_id;
guint tex_target;
GstVideoGLTextureType tex_type;
GstVideoInfo info;
GstVideoAlignment valign;
guint plane;
gfloat tex_scaling[2];
/* <private> */
GstGLMemoryTransfer transfer_state;
gboolean texture_wrapped;
GDestroyNotify notify;
gpointer user_data;
guint unpack_length;
guint tex_width;
};
#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 }"
/**
* GST_GL_MEMORY_ALLOCATOR:
*
* The name of the GL memory allocator
*/
#define GST_GL_MEMORY_ALLOCATOR "GLMemory"
void gst_gl_memory_init (void);
gboolean gst_is_gl_memory (GstMemory * mem);
GstMemory * gst_gl_memory_alloc (GstGLContext * context,
GstAllocationParams *params,
GstVideoInfo * info,
guint plane,
GstVideoAlignment *valign);
GstGLMemory * gst_gl_memory_wrapped (GstGLContext * context,
GstVideoInfo * info,
guint plane,
GstVideoAlignment *valign,
gpointer data,
gpointer user_data,
GDestroyNotify notify);
GstGLMemory * gst_gl_memory_wrapped_texture (GstGLContext * context,
guint texture_id,
guint texture_target,
GstVideoInfo * info,
guint plane,
GstVideoAlignment *valign,
gpointer user_data,
GDestroyNotify notify);
void gst_gl_memory_download_transfer (GstGLMemory * gl_mem);
void gst_gl_memory_upload_transfer (GstGLMemory * gl_mem);
gboolean gst_gl_memory_copy_into_texture (GstGLMemory *gl_mem,
guint tex_id,
GstVideoGLTextureType tex_type,
gint width,
gint height,
gint stride,
gboolean respecify);
gboolean gst_gl_memory_setup_buffer (GstGLContext * context,
GstAllocationParams * params,
GstVideoInfo * info,
GstVideoAlignment *valign,
GstBuffer * buffer);
gboolean gst_gl_memory_setup_wrapped (GstGLContext * context,
GstVideoInfo * info,
GstVideoAlignment *valign,
gpointer data[GST_VIDEO_MAX_PLANES],
GstGLMemory *textures[GST_VIDEO_MAX_PLANES],
gpointer user_data,
GDestroyNotify notify);
gint gst_gl_memory_get_texture_width (GstGLMemory * gl_mem);
gint gst_gl_memory_get_texture_height (GstGLMemory * gl_mem);
/* utility functions */
GstVideoGLTextureType gst_gl_texture_type_from_format (GstGLContext *context,
GstVideoFormat v_format,
guint plane);
guint gst_gl_format_from_gl_texture_type (GstVideoGLTextureType tex_format);
guint gst_gl_sized_gl_format_from_gl_format_type (GstGLContext * context,
guint format,
guint type);
/**
* GstGLAllocator
*
* Opaque #GstGLAllocator struct
*/
struct _GstGLAllocator
{
GstGLBaseBufferAllocator parent;
GstMemoryCopyFunction fallback_mem_copy;
};
/**
* GstGLAllocatorClass:
*
* The #GstGLAllocatorClass only contains private data
*/
struct _GstGLAllocatorClass
{
GstGLBaseBufferAllocatorClass parent_class;
};
G_END_DECLS
#endif /* _GST_GL_MEMORY_H_ */
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