mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
gl: new glbasebuffer GstMemory object
Provides generic handling of GL buffer objects accessible using the GL bind points (GL_ARRAY_BUFFER, GL_PIXEL_*_BUFFER). Implementation based off the current GstGLMemory.
This commit is contained in:
Matthew Waters
Tim-Philipp Müller
parent
c9d99be28c
commit
1e87053475
5 changed files with 835 additions and 0 deletions
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@ -11,6 +11,7 @@ built_sys_header_configure = gstglconfig.h
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libgstgl_@GST_API_VERSION@_la_SOURCES = \
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gstgldisplay.c \
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gstglcontext.c \
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gstglbasebuffer.c \
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gstglmemory.c \
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gstglbufferpool.c \
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gstglfilter.c \
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@ -33,6 +34,7 @@ libgstgl_@GST_API_VERSION@include_HEADERS = \
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gstglwindow.h \
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gstgldisplay.h \
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gstglcontext.h \
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gstglbasebuffer.h \
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gstglmemory.h \
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gstglbufferpool.h \
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gstglfilter.h \
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@ -39,6 +39,7 @@
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#include <gst/gl/gstglupload.h>
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#include <gst/gl/gstgluploadmeta.h>
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#include <gst/gl/gstgldownload.h>
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#include <gst/gl/gstglbasebuffer.h>
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#include <gst/gl/gstglmemory.h>
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#include <gst/gl/gstglbufferpool.h>
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#include <gst/gl/gstglframebuffer.h>
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@ -39,6 +39,10 @@ typedef struct _GstGLWindow GstGLWindow;
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typedef struct _GstGLWindowPrivate GstGLWindowPrivate;
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typedef struct _GstGLWindowClass GstGLWindowClass;
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typedef struct _GstGLBaseBuffer GstGLBaseBuffer;
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typedef struct _GstGLBaseBufferAllocator GstGLBaseBufferAllocator;
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typedef struct _GstGLBaseBufferAllocatorClass GstGLBaseBufferAllocatorClass;
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typedef struct _GstGLMemory GstGLMemory;
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typedef struct _GstGLAllocator GstGLAllocator;
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typedef struct _GstGLAllocatorClass GstGLAllocatorClass;
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658
gst-libs/gst/gl/gstglbasebuffer.c
Normal file
658
gst-libs/gst/gl/gstglbasebuffer.c
Normal file
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@ -0,0 +1,658 @@
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/*
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstglbasebuffer.h"
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#include "gstglutils.h"
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/**
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* SECTION:gstglbuffer
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* @short_description: memory subclass for GL buffers
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* @see_also: #GstMemory, #GstAllocator
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*
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* GstGLBaseBuffer is a #GstMemory subclass providing support for the mapping of
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* GL buffers.
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*
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* Data is uploaded or downloaded from the GPU as is necessary.
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*/
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/* Implementation notes:
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*
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* Currently does not take into account GLES2 differences (no mapbuffer)
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*/
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#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
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#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
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#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
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#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
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#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
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/* compatibility definitions... */
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#ifndef GL_MAP_READ_BIT
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#define GL_MAP_READ_BIT 0x0001
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#endif
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#ifndef GL_MAP_WRITE_BIT
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#define GL_MAP_WRITE_BIT 0x0002
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#endif
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#ifndef GL_COPY_READ_BUFFER
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#define GL_COPY_READ_BUFFER 0x8F36
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#endif
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#ifndef GL_COPY_WRITE_BUFFER
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#define GL_COPY_WRITE_BUFFER 0x8F37
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#endif
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_BASE_BUFFER);
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#define GST_CAT_DEFUALT GST_CAT_GL_BASE_BUFFER
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static GstAllocator *_gl_base_buffer_allocator;
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GQuark
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gst_gl_base_buffer_error_quark (void)
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{
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return g_quark_from_static_string ("gst-gl-base-buffer-error-quark");
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}
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static gboolean
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_default_create (GstGLBaseBuffer * mem, GError ** error)
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{
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g_set_error (error, GST_GL_BASE_BUFFER_ERROR, GST_GL_BASE_BUFFER_ERROR_FAILED,
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"subclass should define create() vfunc");
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g_critical ("subclass should override "
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"GstGLBaseBufferAllocatorClass::create() function");
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return FALSE;
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}
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struct create_data
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{
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GstGLBaseBuffer *mem;
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gboolean result;
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};
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static void
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_mem_create_gl (GstGLContext * context, struct create_data *transfer)
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{
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GstGLBaseBufferAllocatorClass *alloc_class;
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GError *error = NULL;
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alloc_class =
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GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
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g_return_if_fail (alloc_class->create != NULL);
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if ((transfer->result = alloc_class->create (transfer->mem, &error)))
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return;
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g_assert (error != NULL);
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GST_CAT_ERROR (GST_CAT_GL_BASE_BUFFER, "Failed to create GL buffer: %s",
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error->message);
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}
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void
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gst_gl_base_buffer_init (GstGLBaseBuffer * mem, GstAllocator * allocator,
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GstMemory * parent, GstGLContext * context, GstAllocationParams * params,
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gsize size)
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{
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gsize align = gst_memory_alignment, offset = 0, maxsize = size;
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GstMemoryFlags flags = 0;
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struct create_data data;
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if (params) {
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flags = params->flags;
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align |= params->align;
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offset = params->prefix;
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maxsize += params->prefix + params->padding + align;
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}
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gst_memory_init (GST_MEMORY_CAST (mem), flags, allocator, parent, maxsize,
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align, offset, size);
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mem->context = gst_object_ref (context);
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g_mutex_init (&mem->lock);
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data.mem = mem;
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gst_gl_context_thread_add (context,
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(GstGLContextThreadFunc) _mem_create_gl, &data);
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if (!data.result) {
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GST_CAT_ERROR (GST_CAT_GL_BASE_BUFFER,
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"Could not create GL buffer with context:%p", context);
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}
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GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER, "new GL buffer memory:%p size:%"
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G_GSIZE_FORMAT, mem, maxsize);
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}
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static gpointer
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_align_data (gpointer data, gsize align, gsize * maxsize)
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{
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guint8 *ret = data;
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gsize aoffset;
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/* do alignment */
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if ((aoffset = ((guintptr) ret & align))) {
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aoffset = (align + 1) - aoffset;
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ret += aoffset;
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*maxsize -= aoffset;
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}
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return ret;
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}
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/* subclass usage only */
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GstGLBaseBuffer *
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gst_gl_base_buffer_alloc_data (GstGLBaseBuffer * gl_mem)
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{
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GstMemory *mem = (GstMemory *) gl_mem;
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if (gl_mem->data)
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return gl_mem;
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gl_mem->alloc_data = g_try_malloc (mem->maxsize);
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if (gl_mem->alloc_data == NULL) {
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gst_memory_unref (mem);
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return NULL;
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}
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gl_mem->data = _align_data (gl_mem->alloc_data, mem->align, &mem->maxsize);
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return gl_mem;
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}
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/* XXX: add as API? */
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static gpointer
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gst_gl_base_buffer_cpu_access (GstGLBaseBuffer * mem,
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GstMapInfo * info, gsize size)
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{
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const GstGLFuncs *gl = mem->context->gl_vtable;
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gpointer data, ret;
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gst_gl_base_buffer_alloc_data (mem);
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ret = mem->data;
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GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "mapping id %d size %" G_GSIZE_FORMAT,
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mem->id, size);
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/* The extra data pointer indirection/memcpy is needed for coherent across
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* concurrent map()'s in both GL and CPU */
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if (GST_MEMORY_FLAG_IS_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD)
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&& (info->flags & GST_MAP_GL) == 0 && (info->flags & GST_MAP_READ) != 0) {
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gl->BindBuffer (mem->target, mem->id);
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if (gl->MapBufferRange) {
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/* FIXME: optionally remove this with a flag and return the
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* glMapBufferRange pointer (requires
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* GL_ARB_buffer_storage/GL4/GL_COHERENT_BIT) */
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guint gl_map_flags = GL_MAP_READ_BIT;
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data = gl->MapBufferRange (mem->target, 0, size, gl_map_flags);
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if (data)
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memcpy (data, mem->data, size);
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gl->UnmapBuffer (mem->target);
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ret = mem->data;
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} else if (gl->GetBufferSubData) {
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gl->GetBufferSubData (mem->target, 0, size, mem->data);
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ret = mem->data;
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} else {
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ret = NULL;
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}
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gl->BindBuffer (mem->target, 0);
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}
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return ret;
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}
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/* XXX: add as API? */
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static void
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gst_gl_base_buffer_upload_cpu_write (GstGLBaseBuffer * mem, GstMapInfo * info,
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gsize size)
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{
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const GstGLFuncs *gl = mem->context->gl_vtable;
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gpointer data;
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if (!mem->data)
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/* no data pointer has been written */
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return;
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/* The extra data pointer indirection/memcpy is needed for coherent across
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* concurrent map()'s in both GL and CPU */
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/* FIXME: uploading potentially half-written data for libav pushing READWRITE
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* mapped buffers */
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if (GST_MEMORY_FLAG_IS_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD)
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|| (mem->map_flags & GST_MAP_WRITE) != 0) {
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gl->BindBuffer (mem->target, mem->id);
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if (gl->MapBufferRange) {
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/* FIXME: optionally remove this with a flag and return the
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* glMapBufferRange pointer (requires
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* GL_ARB_buffer_storage/GL4/GL_COHERENT_BIT) */
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guint gl_map_flags = GL_MAP_WRITE_BIT;
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data = gl->MapBufferRange (mem->target, 0, size, gl_map_flags);
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if (data)
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memcpy (data, mem->data, size);
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gl->UnmapBuffer (mem->target);
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} else if (gl->BufferSubData) {
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gl->BufferSubData (mem->target, 0, size, mem->data);
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}
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gl->BindBuffer (mem->target, 0);
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}
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}
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static gpointer
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_default_map_buffer (GstGLBaseBuffer * mem, GstMapInfo * info, gsize size)
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{
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if ((info->flags & GST_MAP_GL) != 0) {
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if (info->flags & GST_MAP_READ) {
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gst_gl_base_buffer_upload_cpu_write (mem, info, size);
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}
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return &mem->id;
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} else {
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return gst_gl_base_buffer_cpu_access (mem, info, size);
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}
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return NULL;
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}
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struct map_data
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{
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GstGLBaseBuffer *mem;
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GstMapInfo *info;
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gsize size;
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gpointer data;
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};
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static void
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_map_data_gl (GstGLContext * context, struct map_data *transfer)
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{
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GstGLBaseBufferAllocatorClass *alloc_class;
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GstGLBaseBuffer *mem = transfer->mem;
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GstMapInfo *info = transfer->info;
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alloc_class =
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GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
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g_return_if_fail (alloc_class->map_buffer != NULL);
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g_mutex_lock (&mem->lock);
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GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "mapping mem %p id %d flags %04x", mem,
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mem->id, info->flags);
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/* FIXME: validate map flags based on the memory domain */
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if (mem->map_count++ == 0)
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mem->map_flags = info->flags;
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else {
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/* assert that the flags are a subset of the first map flags */
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g_assert ((((GST_MAP_GL - 1) & info->flags) & mem->map_flags) != 0);
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GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "multiple map no %d flags %04x "
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"all flags %04x", mem->map_count, info->flags, mem->map_flags);
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}
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if ((info->flags & GST_MAP_GL) != (mem->map_flags & GST_MAP_GL))
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mem->map_flags |= GST_MAP_GL;
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if (info->flags & GST_MAP_GL)
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mem->gl_map_count++;
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transfer->data = alloc_class->map_buffer (transfer->mem, transfer->info,
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transfer->size);
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if (transfer->data) {
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if (info->flags & GST_MAP_GL) {
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if (info->flags & GST_MAP_WRITE)
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GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
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GST_MEMORY_FLAG_UNSET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
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} else {
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if (info->flags & GST_MAP_WRITE)
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GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
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GST_MEMORY_FLAG_UNSET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
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}
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}
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g_mutex_unlock (&mem->lock);
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}
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static gpointer
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_mem_map_full (GstGLBaseBuffer * mem, GstMapInfo * info, gsize size)
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{
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struct map_data transfer;
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transfer.mem = mem;
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transfer.info = info;
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transfer.size = size;
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transfer.data = NULL;
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gst_gl_context_thread_add (mem->context,
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(GstGLContextThreadFunc) _map_data_gl, &transfer);
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return transfer.data;
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}
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static void
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_default_unmap_buffer (GstGLBaseBuffer * mem, GstMapInfo * info)
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{
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/* XXX: optimistically transfer data */
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}
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struct unmap_data
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{
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GstGLBaseBuffer *mem;
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GstMapInfo *info;
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};
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static void
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_unmap_data_gl (GstGLContext * context, struct unmap_data *transfer)
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{
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GstGLBaseBufferAllocatorClass *alloc_class;
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GstGLBaseBuffer *mem = transfer->mem;
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GstMapInfo *info = transfer->info;
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alloc_class =
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GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
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g_return_if_fail (alloc_class->unmap_buffer != NULL);
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g_mutex_lock (&mem->lock);
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GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "unmapping mem %p id %d flags %04x", mem,
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mem->id, info->flags);
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alloc_class->unmap_buffer (transfer->mem, transfer->info);
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if (info->flags & GST_MAP_GL && --mem->gl_map_count)
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/* unset the gl flag */
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mem->map_flags &= ~GST_MAP_GL;
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if (--mem->map_count <= 0) {
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mem->map_flags = 0;
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}
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if (info->flags & GST_MAP_GL) {
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if (info->flags & GST_MAP_WRITE)
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GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
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} else {
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if (info->flags & GST_MAP_WRITE)
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GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
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}
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g_mutex_unlock (&mem->lock);
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}
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static void
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_mem_unmap_full (GstGLBaseBuffer * mem, GstMapInfo * info)
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{
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struct unmap_data transfer;
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transfer.mem = mem;
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transfer.info = info;
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gst_gl_context_thread_add (mem->context,
|
||||
(GstGLContextThreadFunc) _unmap_data_gl, &transfer);
|
||||
}
|
||||
|
||||
gboolean
|
||||
gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
|
||||
GstGLBaseBuffer * dest, gssize offset, gssize size)
|
||||
{
|
||||
const GstGLFuncs *gl = src->context->gl_vtable;
|
||||
GstMapInfo sinfo, dinfo;
|
||||
|
||||
if (!gl->CopyBufferSubData)
|
||||
/* This is GL(ES) 3.0+ only */
|
||||
return FALSE;
|
||||
|
||||
if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ | GST_MAP_GL)) {
|
||||
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
|
||||
"failed to read map source memory %p", src);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE | GST_MAP_GL)) {
|
||||
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
|
||||
"failed to write map destination memory %p", dest);
|
||||
gst_memory_unmap ((GstMemory *) src, &sinfo);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
gl->BindBuffer (GL_COPY_READ_BUFFER, src->id);
|
||||
gl->BindBuffer (GL_COPY_WRITE_BUFFER, dest->id);
|
||||
gl->CopyBufferSubData (GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
|
||||
offset, 0, size);
|
||||
|
||||
gst_memory_unmap ((GstMemory *) src, &sinfo);
|
||||
gst_memory_unmap ((GstMemory *) dest, &dinfo);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
gboolean
|
||||
gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src, GstGLBaseBuffer * dest,
|
||||
gssize offset, gssize size)
|
||||
{
|
||||
GstMapInfo sinfo, dinfo;
|
||||
|
||||
if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
|
||||
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
|
||||
"could not read map source memory %p", src);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
|
||||
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
|
||||
"could not write map dest memory %p", dest);
|
||||
gst_memory_unmap ((GstMemory *) src, &sinfo);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER,
|
||||
"memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
|
||||
memcpy (dinfo.data, sinfo.data + offset, size);
|
||||
gst_memory_unmap ((GstMemory *) dest, &dinfo);
|
||||
gst_memory_unmap ((GstMemory *) src, &sinfo);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstGLBaseBuffer *
|
||||
_default_copy (GstGLBaseBuffer * src, gssize offset, gssize size)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct copy_params
|
||||
{
|
||||
GstGLBaseBuffer *src;
|
||||
GstGLBaseBuffer *dest;
|
||||
gssize offset;
|
||||
gssize size;
|
||||
gboolean result;
|
||||
};
|
||||
|
||||
static void
|
||||
_mem_copy_gl (GstGLContext * context, struct copy_params *transfer)
|
||||
{
|
||||
GstGLBaseBufferAllocatorClass *alloc_class;
|
||||
|
||||
alloc_class =
|
||||
GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->src->mem.allocator);
|
||||
|
||||
g_return_if_fail (alloc_class->copy != NULL);
|
||||
|
||||
transfer->dest =
|
||||
alloc_class->copy (transfer->src, transfer->offset, transfer->size);
|
||||
}
|
||||
|
||||
static GstMemory *
|
||||
_mem_copy (GstGLBaseBuffer * src, gssize offset, gssize size)
|
||||
{
|
||||
struct copy_params transfer;
|
||||
|
||||
transfer.dest = NULL;
|
||||
transfer.src = src;
|
||||
transfer.offset = offset;
|
||||
transfer.size = size;
|
||||
if (size == -1 || size > 0)
|
||||
gst_gl_context_thread_add (src->context,
|
||||
(GstGLContextThreadFunc) _mem_copy_gl, &transfer);
|
||||
|
||||
return (GstMemory *) transfer.dest;
|
||||
}
|
||||
|
||||
static GstMemory *
|
||||
_mem_share (GstGLBaseBuffer * mem, gssize offset, gssize size)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
_mem_is_span (GstGLBaseBuffer * mem1, GstGLBaseBuffer * mem2, gsize * offset)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static GstMemory *
|
||||
_mem_alloc (GstAllocator * allocator, gsize size, GstAllocationParams * params)
|
||||
{
|
||||
g_critical ("Subclass should override GstAllocatorClass::alloc() function");
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
_default_destroy (GstGLBaseBuffer * mem)
|
||||
{
|
||||
}
|
||||
|
||||
static void
|
||||
_destroy_gl_objects (GstGLContext * context, GstGLBaseBuffer * mem)
|
||||
{
|
||||
GstGLBaseBufferAllocatorClass *alloc_class;
|
||||
|
||||
alloc_class = GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (mem->mem.allocator);
|
||||
|
||||
g_return_if_fail (alloc_class->destroy != NULL);
|
||||
|
||||
alloc_class->destroy (mem);
|
||||
}
|
||||
|
||||
static void
|
||||
_mem_free (GstAllocator * allocator, GstMemory * memory)
|
||||
{
|
||||
GstGLBaseBuffer *mem = (GstGLBaseBuffer *) memory;
|
||||
|
||||
GST_CAT_TRACE (GST_CAT_GL_BASE_BUFFER, "freeing buffer memory:%p id:%u", mem,
|
||||
mem->id);
|
||||
|
||||
gst_gl_context_thread_add (mem->context,
|
||||
(GstGLContextThreadFunc) _destroy_gl_objects, mem);
|
||||
|
||||
g_mutex_clear (&mem->lock);
|
||||
|
||||
if (mem->alloc_data) {
|
||||
g_free (mem->alloc_data);
|
||||
mem->alloc_data = NULL;
|
||||
}
|
||||
mem->data = NULL;
|
||||
|
||||
gst_object_unref (mem->context);
|
||||
}
|
||||
|
||||
G_DEFINE_TYPE (GstGLBaseBufferAllocator, gst_gl_base_buffer_allocator,
|
||||
GST_TYPE_ALLOCATOR);
|
||||
|
||||
static void
|
||||
gst_gl_base_buffer_allocator_class_init (GstGLBaseBufferAllocatorClass * klass)
|
||||
{
|
||||
GstAllocatorClass *allocator_class = (GstAllocatorClass *) klass;
|
||||
|
||||
allocator_class->alloc = _mem_alloc;
|
||||
allocator_class->free = _mem_free;
|
||||
|
||||
klass->create = _default_create;
|
||||
klass->map_buffer = _default_map_buffer;
|
||||
klass->unmap_buffer = _default_unmap_buffer;
|
||||
klass->copy = _default_copy;
|
||||
klass->destroy = _default_destroy;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_gl_base_buffer_allocator_init (GstGLBaseBufferAllocator * allocator)
|
||||
{
|
||||
GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
|
||||
|
||||
alloc->mem_type = GST_GL_MEMORY_ALLOCATOR;
|
||||
alloc->mem_map_full = (GstMemoryMapFullFunction) _mem_map_full;
|
||||
alloc->mem_unmap_full = (GstMemoryUnmapFullFunction) _mem_unmap_full;
|
||||
alloc->mem_copy = (GstMemoryCopyFunction) _mem_copy;
|
||||
alloc->mem_share = (GstMemoryShareFunction) _mem_share;
|
||||
alloc->mem_is_span = (GstMemoryIsSpanFunction) _mem_is_span;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_gl_base_buffer_init_once:
|
||||
*
|
||||
* Initializes the GL Buffer allocator. It is safe to call this function
|
||||
* multiple times. This must be called before any other GstGLBaseBuffer operation.
|
||||
*/
|
||||
void
|
||||
gst_gl_base_buffer_init_once (void)
|
||||
{
|
||||
static volatile gsize _init = 0;
|
||||
|
||||
if (g_once_init_enter (&_init)) {
|
||||
GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_BASE_BUFFER, "glbuffer", 0,
|
||||
"OpenGL Buffer");
|
||||
|
||||
_gl_base_buffer_allocator =
|
||||
g_object_new (gst_gl_base_buffer_allocator_get_type (), NULL);
|
||||
|
||||
gst_allocator_register (GST_GL_BASE_BUFFER_ALLOCATOR_NAME,
|
||||
gst_object_ref (_gl_base_buffer_allocator));
|
||||
g_once_init_leave (&_init, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_is_gl_base_buffer:
|
||||
* @mem:a #GstMemory
|
||||
*
|
||||
* Returns: whether the memory at @mem is a #GstGLBaseBuffer
|
||||
*/
|
||||
gboolean
|
||||
gst_is_gl_base_buffer (GstMemory * mem)
|
||||
{
|
||||
return mem != NULL && mem->allocator != NULL &&
|
||||
g_type_is_a (G_OBJECT_TYPE (mem->allocator),
|
||||
GST_TYPE_GL_BASE_BUFFER_ALLOCATOR);
|
||||
}
|
||||
170
gst-libs/gst/gl/gstglbasebuffer.h
Normal file
170
gst-libs/gst/gl/gstglbasebuffer.h
Normal file
|
|
@ -0,0 +1,170 @@
|
|||
/*
|
||||
* 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_BASE_BUFFER_H_
|
||||
#define _GST_GL_BASE_BUFFER_H_
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/gstallocator.h>
|
||||
#include <gst/gstmemory.h>
|
||||
|
||||
#include <gst/gl/gstgl_fwd.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_GL_BASE_BUFFER_ALLOCATOR (gst_gl_base_buffer_allocator_get_type())
|
||||
GType gst_gl_base_buffer_allocator_get_type(void);
|
||||
|
||||
#define GST_IS_GL_BASE_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
|
||||
#define GST_IS_GL_BASE_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR))
|
||||
#define GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocatorClass))
|
||||
#define GST_GL_BASE_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocator))
|
||||
#define GST_GL_BASE_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocatorClass))
|
||||
#define GST_GL_BASE_BUFFER_ALLOCATOR_CAST(obj) ((GstGLBaseBufferAllocator *)(obj))
|
||||
|
||||
GQuark gst_gl_base_buffer_error_quark (void);
|
||||
#define GST_GL_BASE_BUFFER_ERROR (gst_gl_base_buffer_error_quark ())
|
||||
|
||||
typedef enum
|
||||
{
|
||||
GST_GL_BASE_BUFFER_ERROR_FAILED,
|
||||
GST_GL_BASE_BUFFER_ERROR_OLD_LIBS,
|
||||
GST_GL_BASE_BUFFER_ERROR_RESOURCE_UNAVAILABLE,
|
||||
} GstGLBufferError;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 0),
|
||||
GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 1)
|
||||
} GstGLBaseBufferFlags;
|
||||
|
||||
/**
|
||||
* GST_MAP_GL:
|
||||
*
|
||||
* Flag indicating that we should map the GL object instead of to system memory.
|
||||
*
|
||||
* Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
|
||||
* you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
|
||||
* #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
|
||||
*/
|
||||
#define GST_MAP_GL (GST_MAP_FLAG_LAST << 1)
|
||||
|
||||
/**
|
||||
* GstGLBaseBuffer:
|
||||
* @mem: the parent object
|
||||
* @context: the #GstGLContext to use for GL operations
|
||||
* @tex_id: the texture id for this memory
|
||||
* @v_format: the video format of this texture
|
||||
* @gl_format: the format of the texture
|
||||
* @width: width of the texture
|
||||
* @height: height of the texture
|
||||
* @download: the object used to download this texture into @v_format
|
||||
* @upload: the object used to upload this texture from @v_format
|
||||
*
|
||||
* Represents information about a GL buffer
|
||||
*/
|
||||
struct _GstGLBaseBuffer
|
||||
{
|
||||
GstMemory mem;
|
||||
|
||||
GstGLContext *context;
|
||||
guint id;
|
||||
guint target;
|
||||
|
||||
/* <protected> */
|
||||
GstMapFlags map_flags; /* cumulative map flags */
|
||||
|
||||
GMutex lock;
|
||||
gint map_count;
|
||||
gint gl_map_count;
|
||||
|
||||
gpointer data;
|
||||
gpointer alloc_data;
|
||||
|
||||
gpointer impl;
|
||||
};
|
||||
|
||||
typedef gboolean (*GstGLBaseBufferAllocatorCreateFunction) (GstGLBaseBuffer * buffer, GError ** error);
|
||||
typedef gpointer (*GstGLBaseBufferAllocatorMapBufferFunction) (GstGLBaseBuffer * buffer, GstMapInfo * info, gsize maxsize);
|
||||
typedef void (*GstGLBaseBufferAllocatorUnmapBufferFunction) (GstGLBaseBuffer * buffer, GstMapInfo * info);
|
||||
typedef GstGLBaseBuffer * (*GstGLBaseBufferAllocatorCopyFunction) (GstGLBaseBuffer * buffer, gssize offset, gssize size);
|
||||
typedef void (*GstGLBaseBufferAllocatorDestroyFunction) (GstGLBaseBuffer * buffer);
|
||||
|
||||
/**
|
||||
* GstGLBaseBufferAllocator
|
||||
*
|
||||
* Opaque #GstGLAllocator struct
|
||||
*/
|
||||
struct _GstGLBaseBufferAllocator
|
||||
{
|
||||
GstAllocator parent;
|
||||
};
|
||||
|
||||
/**
|
||||
* GstGLBaseBufferAllocatorClass:
|
||||
*
|
||||
* The #GstGLBaseBufferAllocatorClass only contains private data
|
||||
*/
|
||||
struct _GstGLBaseBufferAllocatorClass
|
||||
{
|
||||
GstAllocatorClass parent_class;
|
||||
|
||||
GstGLBaseBufferAllocatorCreateFunction create;
|
||||
GstGLBaseBufferAllocatorMapBufferFunction map_buffer;
|
||||
GstGLBaseBufferAllocatorUnmapBufferFunction unmap_buffer;
|
||||
GstGLBaseBufferAllocatorCopyFunction copy;
|
||||
GstGLBaseBufferAllocatorDestroyFunction destroy;
|
||||
};
|
||||
|
||||
#include <gst/gl/gl.h>
|
||||
|
||||
#define GST_CAPS_FEATURE_MEMORY_GL_BUFFER "memory:GLBuffer"
|
||||
|
||||
/**
|
||||
* GST_GL_BASE_BUFFER_ALLOCATOR_NAME:
|
||||
*
|
||||
* The name of the GL buffer allocator
|
||||
*/
|
||||
#define GST_GL_BASE_BUFFER_ALLOCATOR_NAME "GLBuffer"
|
||||
|
||||
void gst_gl_base_buffer_init_once (void);
|
||||
gboolean gst_is_gl_base_buffer (GstMemory * mem);
|
||||
|
||||
void gst_gl_base_buffer_init (GstGLBaseBuffer * mem,
|
||||
GstAllocator * allocator,
|
||||
GstMemory * parent,
|
||||
GstGLContext * context,
|
||||
GstAllocationParams * params,
|
||||
gsize maxsize);
|
||||
|
||||
GstGLBaseBuffer * gst_gl_base_buffer_alloc_data (GstGLBaseBuffer * gl_mem);
|
||||
|
||||
gboolean gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
|
||||
GstGLBaseBuffer * dest,
|
||||
gssize offset,
|
||||
gssize size);
|
||||
gboolean gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src,
|
||||
GstGLBaseBuffer * dest,
|
||||
gssize offset,
|
||||
gssize size);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* _GST_GL_BUFFER_H_ */
|
||||
Loading…
Reference in a new issue