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