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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-19 08:11:16 +00:00
af023d7c95
Anytime else, we have no idea how to match up map and unmaps. We also don't know exactly how the calling code is using us. Also fixes the case where we're trying to transfer while someone else is accessing our data pointer or texture resulting in mismatched video frames. https://bugzilla.gnome.org/show_bug.cgi?id=744839
207 lines
6.8 KiB
C
207 lines
6.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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/gl.h>
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G_BEGIN_DECLS
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#define GST_TYPE_GL_ALLOCATOR (gst_gl_allocator_get_type())
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GType gst_gl_allocator_get_type(void);
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#define GST_IS_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
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#define GST_IS_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_ALLOCATOR))
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#define GST_GL_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocator))
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#define GST_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR_CAST(obj) ((GstGLAllocator *)(obj))
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/**
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* GstGLMemoryFlags:
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*
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* Flags indicating the current state of a #GstGLMemory
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*/
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typedef enum
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{
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GST_GL_MEMORY_FLAG_DOWNLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 0),
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GST_GL_MEMORY_FLAG_UPLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 1),
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GST_GL_MEMORY_FLAG_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 2),
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GST_GL_MEMORY_FLAG_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 3)
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} GstGLMemoryFlags;
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/**
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* GST_MAP_GL:
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*
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* Flag indicating that we should map the GL object instead of to system memory.
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*
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* Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
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* you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
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* #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
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*/
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#define GST_MAP_GL GST_MAP_FLAG_LAST << 1
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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 texture id for this memory
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* @v_format: the video format of this texture
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* @gl_format: the format of the texture
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* @width: width of the texture
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* @height: height of the texture
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* @download: the object used to download this texture into @v_format
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* @upload: the object used to upload this texture from @v_format
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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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GstMemory mem;
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GstGLContext *context;
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guint tex_id;
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guint 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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/* <private> */
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gpointer data;
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gboolean data_wrapped;
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gboolean texture_wrapped;
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GDestroyNotify notify;
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gpointer user_data;
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guint pbo;
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guint unpack_length;
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guint tex_width;
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guint transfer_pbo;
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GstMapFlags map_flags;
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guint map_count;
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GMutex lock;
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};
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#define GST_CAPS_FEATURE_MEMORY_GL_MEMORY "memory:GLMemory"
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/**
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* GST_GL_MEMORY_ALLOCATOR:
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*
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* The name of the GL memore allocator
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*/
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#define GST_GL_MEMORY_ALLOCATOR "GLMemory"
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/**
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* GST_GL_MEMORY_FLAGS:
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* @mem: a #GstGLMemory
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*
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* Get the currently set flags on @mem
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*/
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#define GST_GL_MEMORY_FLAGS(mem) GST_MEMORY_FLAGS(mem)
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/**
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* GST_GL_MEMORY_FLAG_IS_SET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Whether @flag is set on @mem
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*/
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#define GST_GL_MEMORY_FLAG_IS_SET(mem,flag) GST_MEMORY_FLAG_IS_SET(mem,flag)
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/**
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* GST_GL_MEMORY_FLAG_SET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Set @flag on @mem
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*/
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#define GST_GL_MEMORY_FLAG_SET(mem,flag) GST_MINI_OBJECT_FLAG_SET(mem,flag)
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/**
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* GST_GL_MEMORY_FLAG_UNSET:
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* @mem: a #GstGLMemory
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* @flag: a flag
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*
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* Unset @flag on @mem
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*/
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#define GST_GL_MEMORY_FLAG_UNSET(mem,flag) GST_MEMORY_FLAG_UNSET(mem,flag)
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void gst_gl_memory_init (void);
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gboolean gst_is_gl_memory (GstMemory * mem);
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GstMemory * gst_gl_memory_alloc (GstGLContext * context, GstVideoInfo * info, guint plane,
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GstVideoAlignment *valign);
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GstGLMemory * gst_gl_memory_wrapped (GstGLContext * context, GstVideoInfo * info, guint plane,
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GstVideoAlignment *valign, gpointer data,
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gpointer user_data, GDestroyNotify notify);
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GstGLMemory * gst_gl_memory_wrapped_texture (GstGLContext * context, guint texture_id, guint texture_target,
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GstVideoInfo * info, guint plane, GstVideoAlignment *valign,
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gpointer user_data, GDestroyNotify notify);
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gboolean gst_gl_memory_copy_into_texture (GstGLMemory *gl_mem, guint tex_id,
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GstVideoGLTextureType tex_type,
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gint width, gint height, gint stride,
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gboolean respecify);
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gboolean gst_gl_memory_setup_buffer (GstGLContext * context, GstVideoInfo * info, GstVideoAlignment *valign,
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GstBuffer * buffer);
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gboolean gst_gl_memory_setup_wrapped (GstGLContext * context, GstVideoInfo * info, GstVideoAlignment *valign,
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gpointer data[GST_VIDEO_MAX_PLANES],
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GstGLMemory *textures[GST_VIDEO_MAX_PLANES]);
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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_texture_type_from_format (GstGLContext *context, GstVideoFormat v_format, guint plane);
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void gst_gl_memory_download_transfer (GstGLMemory * gl_mem);
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/**
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* GstGLAllocator
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*
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* Opaque #GstGLAllocator struct
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*/
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struct _GstGLAllocator
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{
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GstAllocator parent;
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};
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/**
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* GstGLAllocatorClass:
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*
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* The #GstGLAllocatorClass only contains private data
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*/
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struct _GstGLAllocatorClass
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{
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GstAllocatorClass parent_class;
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};
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G_END_DECLS
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#endif /* _GST_GL_MEMORY_H_ */
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