/*

 * 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/gl/gstglbasememory.h>

#include <gst/gl/gstglformat.h>

G_BEGIN_DECLS

#define GST_TYPE_GL_MEMORY_ALLOCATOR (gst_gl_memory_allocator_get_type())

GST_GL_API

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)

/**

 * GST_CAPS_FEATURE_MEMORY_GL_MEMORY:

 *

 * Name of the caps feature for indicating the use of #GstGLMemory

 */

#define GST_CAPS_FEATURE_MEMORY_GL_MEMORY "memory:GLMemory"

/**

 * GST_GL_MEMORY_VIDEO_FORMATS_STR:

 *

 * List of video formats that are supported by #GstGLMemory

 */

#define GST_GL_MEMORY_VIDEO_FORMATS_STR \

    "{ RGBA, BGRA, RGBx, BGRx, ARGB, ABGR, xRGB, xBGR, RGB, BGR, RGB16, BGR16, " \

    "AYUV, VUYA, I420, YV12, NV12, NV21, YUY2, UYVY, Y41B, Y42B, Y444, " \

    "GRAY8, GRAY16_LE, GRAY16_BE, ARGB64 }"

/**

 * GstGLMemory:

 * @mem: the parent #GstGLBaseMemory object

 * @tex_id: the GL texture id for this memory

 * @tex_target: the GL texture target for this memory

 * @tex_format: 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;

  GstGLFormat               tex_format;

  GstVideoInfo              info;

  GstVideoAlignment         valign;

  guint                     plane;

  gfloat                    tex_scaling[2];

  /* <protected> */

  gboolean                  texture_wrapped;

  guint                     unpack_length;

  guint                     tex_width;

  /* <private> */

  gpointer                  _padding[GST_PADDING];

};

#define GST_TYPE_GL_VIDEO_ALLOCATION_PARAMS (gst_gl_video_allocation_params_get_type())

GST_GL_API

GType gst_gl_video_allocation_params_get_type (void);

typedef struct _GstGLVideoAllocationParams GstGLVideoAllocationParams;

/**

 * GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_VIDEO:

 *

 * GL allocation flag indicating the allocation of 2D video frames

 */

#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_VIDEO (1 << 3)

/**

 * GstGLVideoAllocationParams:

 * @parent: the parent #GstGLAllocationParams structure

 * @v_info: the #GstVideoInfo to allocate

 * @plane: the video plane index to allocate

 * @valign: the #GstVideoAlignment to align the system representation to (may be %NULL for the default)

 * @target: the #GstGLTextureTarget to allocate

 * @tex_format: the #GstGLFormat to allocate

 */

struct _GstGLVideoAllocationParams

{

  GstGLAllocationParams  parent;

  GstVideoInfo          *v_info;

  guint                  plane;

  GstVideoAlignment     *valign;

  GstGLTextureTarget     target;

  GstGLFormat            tex_format;

  /* <private> */

  gpointer               _padding[GST_PADDING];

};

GST_GL_API

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,

                                                                 GstGLFormat tex_format,

                                                                 gpointer wrapped_data,

                                                                 gpointer gl_handle,

                                                                 gpointer user_data,

                                                                 GDestroyNotify notify);

GST_GL_API

GstGLVideoAllocationParams * gst_gl_video_allocation_params_new (GstGLContext * context,

                                                                 GstAllocationParams * alloc_params,

                                                                 GstVideoInfo * v_info,

                                                                 guint plane,

                                                                 GstVideoAlignment * valign,

                                                                 GstGLTextureTarget target,

                                                                 GstGLFormat tex_format);

GST_GL_API

GstGLVideoAllocationParams * gst_gl_video_allocation_params_new_wrapped_data    (GstGLContext * context,

                                                                                 GstAllocationParams * alloc_params,

                                                                                 GstVideoInfo * v_info,

                                                                                 guint plane,

                                                                                 GstVideoAlignment * valign,

                                                                                 GstGLTextureTarget target,

                                                                                 GstGLFormat tex_format,

                                                                                 gpointer wrapped_data,

                                                                                 gpointer user_data,

                                                                                 GDestroyNotify notify);

GST_GL_API

GstGLVideoAllocationParams * gst_gl_video_allocation_params_new_wrapped_texture (GstGLContext * context,

                                                                                 GstAllocationParams * alloc_params,

                                                                                 GstVideoInfo * v_info,

                                                                                 guint plane,

                                                                                 GstVideoAlignment * valign,

                                                                                 GstGLTextureTarget target,

                                                                                 GstGLFormat tex_format,

                                                                                 guint tex_id,

                                                                                 gpointer user_data,

                                                                                 GDestroyNotify notify);

GST_GL_API

GstGLVideoAllocationParams * gst_gl_video_allocation_params_new_wrapped_gl_handle (GstGLContext * context,

                                                                                 GstAllocationParams * alloc_params,

                                                                                 GstVideoInfo * v_info,

                                                                                 guint plane,

                                                                                 GstVideoAlignment * valign,

                                                                                 GstGLTextureTarget target,

                                                                                 GstGLFormat tex_format,

                                                                                 gpointer gl_handle,

                                                                                 gpointer user_data,

                                                                                 GDestroyNotify notify);

/* subclass usage */

GST_GL_API

void            gst_gl_video_allocation_params_free_data    (GstGLVideoAllocationParams * params);

/* subclass usage */

GST_GL_API

void            gst_gl_video_allocation_params_copy_data    (GstGLVideoAllocationParams * src_vid,

                                                             GstGLVideoAllocationParams * dest_vid);

/**

 * GstGLMemoryAllocator

 *

 * Opaque #GstGLMemoryAllocator struct

 */

struct _GstGLMemoryAllocator

{

  /* <private> */

  GstGLBaseMemoryAllocator parent;

  gpointer _padding[GST_PADDING];

};

/**

 * GstGLMemoryAllocatorClass:

 * @map: provide a custom map implementation

 * @copy: provide a custom copy implementation

 * @unmap: provide a custom unmap implementation

 */

struct _GstGLMemoryAllocatorClass

{

  /* <private> */

  GstGLBaseMemoryAllocatorClass             parent_class;

  /* <public> */

  GstGLBaseMemoryAllocatorMapFunction       map;

  GstGLBaseMemoryAllocatorCopyFunction      copy;

  GstGLBaseMemoryAllocatorUnmapFunction     unmap;

  /* <private> */

  gpointer                                  _padding[GST_PADDING];

};

#include <gst/gl/gstglbasememory.h>

/**

 * GST_GL_MEMORY_ALLOCATOR_NAME:

 *

 * The name of the GL memory allocator

 */

#define GST_GL_MEMORY_ALLOCATOR_NAME   "GLMemory"

GST_GL_API

void            gst_gl_memory_init_once (void);

GST_GL_API

gboolean        gst_is_gl_memory (GstMemory * mem);

GST_GL_API

void            gst_gl_memory_init              (GstGLMemory * mem,

                                                 GstAllocator * allocator,

                                                 GstMemory * parent,

                                                 GstGLContext * context,

                                                 GstGLTextureTarget target,

                                                 GstGLFormat tex_format,

                                                 GstAllocationParams *params,

                                                 GstVideoInfo * info,

                                                 guint plane,

                                                 GstVideoAlignment *valign,

                                                 gpointer user_data,

                                                 GDestroyNotify notify);

GST_GL_API

gboolean        gst_gl_memory_copy_into         (GstGLMemory *gl_mem,

                                                 guint tex_id,

                                                 GstGLTextureTarget target,

                                                 GstGLFormat tex_format,

                                                 gint width,

                                                 gint height);

GST_GL_API

gboolean        gst_gl_memory_copy_teximage     (GstGLMemory * src,

                                                 guint tex_id,

                                                 GstGLTextureTarget out_target,

                                                 GstGLFormat out_tex_format,

                                                 gint out_width,

                                                 gint out_height);

GST_GL_API

gboolean        gst_gl_memory_read_pixels       (GstGLMemory * gl_mem,

                                                 gpointer read_pointer);

GST_GL_API

void            gst_gl_memory_texsubimage       (GstGLMemory * gl_mem,

                                                 gpointer read_pointer);

/* accessors */

GST_GL_API

gint                    gst_gl_memory_get_texture_width     (GstGLMemory * gl_mem);

GST_GL_API

gint                    gst_gl_memory_get_texture_height    (GstGLMemory * gl_mem);

GST_GL_API

GstGLFormat             gst_gl_memory_get_texture_format    (GstGLMemory * gl_mem);

GST_GL_API

GstGLTextureTarget      gst_gl_memory_get_texture_target    (GstGLMemory * gl_mem);

GST_GL_API

guint                   gst_gl_memory_get_texture_id        (GstGLMemory * gl_mem);

GST_GL_API

gboolean                gst_gl_memory_setup_buffer          (GstGLMemoryAllocator * allocator,

                                                             GstBuffer * buffer,

                                                             GstGLVideoAllocationParams * params,

                                                             GstGLFormat *tex_formats,

                                                             gpointer *wrapped_data,

                                                             gsize n_wrapped_pointers);

GST_GL_API

GstGLMemoryAllocator *  gst_gl_memory_allocator_get_default (GstGLContext *context);

G_END_DECLS

#endif /* _GST_GL_MEMORY_H_ */