1 /* 2 * GStreamer 3 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef _GST_GL_BUFFER_H_ 22 #define _GST_GL_BUFFER_H_ 23 24 #include <gst/gl/gstglbasememory.h> 25 26 G_BEGIN_DECLS 27 28 #define GST_TYPE_GL_BUFFER_ALLOCATOR (gst_gl_buffer_allocator_get_type()) 29 GST_GL_API 30 GType gst_gl_buffer_allocator_get_type(void); 31 32 #define GST_IS_GL_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR)) 33 #define GST_IS_GL_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_BUFFER_ALLOCATOR)) 34 #define GST_GL_BUFFER_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_BUFFER_ALLOCATOR, GstGLBufferAllocatorClass)) 35 #define GST_GL_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BUFFER_ALLOCATOR, GstGLBufferAllocator)) 36 #define GST_GL_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_BUFFER_ALLOCATOR, GstGLBufferAllocatorClass)) 37 #define GST_GL_BUFFER_ALLOCATOR_CAST(obj) ((GstGLBufferAllocator *)(obj)) 38 39 /** 40 * GstGLBuffer: 41 * @mem: the parent object 42 * @id: the buffer id for this memory 43 * @target: the OpenGL target of this texture for binding purposes 44 * @usage_hints: the OpenGL usage hints this buffer was created with 45 * 46 * Represents information about a GL buffer 47 */ 48 struct _GstGLBuffer 49 { 50 GstGLBaseMemory mem; 51 52 guint id; 53 guint target; /* XXX: put this in the allocator? */ 54 guint usage_hints; /* XXX: put this in the allocator? */ 55 }; 56 57 typedef struct _GstGLBufferAllocationParams GstGLBufferAllocationParams; 58 59 #define GST_TYPE_GL_BUFFER_ALLOCATION_PARAMS (gst_gl_buffer_allocation_params_get_type()) 60 GST_GL_API 61 GType gst_gl_buffer_allocation_params_get_type (void); 62 63 /** 64 * GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER: 65 * 66 * GL allocation flag indicating the allocation of a GL buffer. 67 */ 68 #define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER (1 << 4) 69 70 /** 71 * GstGLBufferAllocationParams: 72 * @parent: parent object 73 * @gl_target: the OpenGL target to bind the buffer to 74 * @gl_usage: the OpenGL usage hint to create the buffer with 75 */ 76 struct _GstGLBufferAllocationParams 77 { 78 GstGLAllocationParams parent; 79 80 guint gl_target; 81 guint gl_usage; 82 83 /*< private >*/ 84 gpointer _padding[GST_PADDING]; 85 }; 86 87 GST_GL_API 88 GstGLBufferAllocationParams * gst_gl_buffer_allocation_params_new (GstGLContext * context, 89 gsize alloc_size, 90 const GstAllocationParams * alloc_params, 91 guint gl_target, 92 guint gl_usage); 93 94 /** 95 * GstGLBufferAllocator: 96 * 97 * Opaque #GstGLBufferAllocator struct 98 */ 99 struct _GstGLBufferAllocator 100 { 101 GstGLBaseMemoryAllocator parent; 102 103 /*< private >*/ 104 gpointer _padding[GST_PADDING]; 105 }; 106 107 /** 108 * GstGLBufferAllocatorClass: 109 * 110 * The #GstGLBufferAllocatorClass only contains private data 111 */ 112 struct _GstGLBufferAllocatorClass 113 { 114 GstGLBaseMemoryAllocatorClass parent_class; 115 116 /*< private >*/ 117 gpointer _padding[GST_PADDING]; 118 }; 119 120 /** 121 * GST_CAPS_FEATURE_MEMORY_GL_BUFFER: 122 * 123 * Name of the caps feature indicating the use of GL buffers 124 */ 125 #define GST_CAPS_FEATURE_MEMORY_GL_BUFFER "memory:GLBuffer" 126 127 /** 128 * GST_GL_BUFFER_ALLOCATOR_NAME: 129 * 130 * The name of the GL buffer allocator 131 */ 132 #define GST_GL_BUFFER_ALLOCATOR_NAME "GLBuffer" 133 134 /** 135 * GST_TYPE_GL_BUFFER: 136 * 137 * Since: 1.20 138 */ 139 #define GST_TYPE_GL_BUFFER (gst_gl_buffer_get_type()) 140 GST_GL_API 141 GType gst_gl_buffer_get_type(void); 142 143 GST_GL_API 144 void gst_gl_buffer_init_once (void); 145 GST_GL_API 146 gboolean gst_is_gl_buffer (GstMemory * mem); 147 148 G_END_DECLS 149 150 #endif /* _GST_GL_BUFFER_H_ */ 151