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170 lines
4.9 KiB
C
170 lines
4.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Alessandro Decina <twi@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 "iosglmemory.h"
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_IOS_GL_MEMORY);
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#define GST_CAT_DEFAULT GST_CAT_IOS_GL_MEMORY
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G_DEFINE_TYPE (GstIOSGLMemoryAllocator, gst_ios_gl_memory_allocator,
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GST_TYPE_GL_MEMORY_ALLOCATOR);
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typedef struct
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{
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GstIOSGLMemory *memory;
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} ContextThreadData;
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static GstAllocator *_ios_gl_memory_allocator;
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static void
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_ios_gl_memory_destroy (GstGLBaseMemory * gl_mem)
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{
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GstIOSGLMemory *mem = (GstIOSGLMemory *) gl_mem;
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mem->gl_notify (mem->gl_data);
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gst_memory_unref (GST_MEMORY_CAST (mem->cv_mem));
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GST_GL_BASE_MEMORY_ALLOCATOR_CLASS
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(gst_ios_gl_memory_allocator_parent_class)->destroy (gl_mem);
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}
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static gpointer
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_ios_gl_memory_allocator_map (GstGLBaseMemory * bmem,
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GstMapInfo * info, gsize size)
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{
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GstGLMemory *gl_mem = (GstGLMemory *) bmem;
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GstIOSGLMemory *mem = (GstIOSGLMemory *) gl_mem;
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if (info->flags & GST_MAP_GL)
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return &gl_mem->tex_id;
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return GST_MEMORY_CAST (mem->cv_mem)->allocator->
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mem_map (GST_MEMORY_CAST (mem->cv_mem), size, info->flags);
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}
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static void
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_ios_gl_memory_allocator_unmap (GstGLBaseMemory * bmem, GstMapInfo * info)
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{
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GstIOSGLMemory *mem = (GstIOSGLMemory *) bmem;
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if (!(info->flags & GST_MAP_GL))
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GST_MEMORY_CAST (mem->cv_mem)->allocator->
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mem_unmap (GST_MEMORY_CAST (mem->cv_mem));
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}
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static GstMemory *
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_mem_alloc (GstAllocator * allocator, gsize size, GstAllocationParams * params)
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{
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g_warning ("use gst_ios_gl_memory_new_wrapped () to allocate from this "
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"IOSGL allocator");
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return NULL;
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}
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static void
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gst_ios_gl_memory_allocator_class_init (GstIOSGLMemoryAllocatorClass * klass)
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{
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GstAllocatorClass *allocator_class = (GstAllocatorClass *) klass;
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GstGLBaseMemoryAllocatorClass *gl_base_allocator_class =
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(GstGLBaseMemoryAllocatorClass *) klass;
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allocator_class->alloc = _mem_alloc;
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gl_base_allocator_class->destroy = _ios_gl_memory_destroy;
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gl_base_allocator_class->map = _ios_gl_memory_allocator_map;
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gl_base_allocator_class->unmap = _ios_gl_memory_allocator_unmap;
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}
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static void
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gst_ios_gl_memory_allocator_init (GstIOSGLMemoryAllocator * allocator)
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{
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GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
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alloc->mem_type = GST_IOS_GL_MEMORY_ALLOCATOR_NAME;
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GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
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}
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void
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gst_ios_gl_memory_init (void)
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{
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static volatile gsize _init = 0;
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if (g_once_init_enter (&_init)) {
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GST_DEBUG_CATEGORY_INIT (GST_CAT_IOS_GL_MEMORY, "iosurface", 0,
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"IOSGL Buffer");
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_ios_gl_memory_allocator =
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g_object_new (GST_TYPE_IOS_GL_MEMORY_ALLOCATOR, NULL);
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gst_object_ref_sink (_ios_gl_memory_allocator);
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gst_allocator_register (GST_IOS_GL_MEMORY_ALLOCATOR_NAME,
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gst_object_ref (_ios_gl_memory_allocator));
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g_once_init_leave (&_init, 1);
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}
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}
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gboolean
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gst_is_ios_gl_memory (GstMemory * mem)
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{
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return mem != NULL && mem->allocator != NULL &&
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g_type_is_a (G_OBJECT_TYPE (mem->allocator),
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GST_TYPE_IOS_GL_MEMORY_ALLOCATOR);
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}
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static GstIOSGLMemory *
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_ios_gl_memory_new (GstGLContext * context,
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GstAppleCoreVideoMemory * cv_mem,
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GstGLTextureTarget target,
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GstGLFormat tex_format,
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guint tex_id,
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GstVideoInfo * info,
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guint plane,
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GstVideoAlignment * valign, gpointer gl_data, GDestroyNotify gl_notify)
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{
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GstIOSGLMemory *mem;
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mem = g_new0 (GstIOSGLMemory, 1);
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mem->gl_mem.tex_id = tex_id;
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mem->gl_mem.texture_wrapped = TRUE;
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gst_gl_memory_init (&mem->gl_mem, _ios_gl_memory_allocator, NULL, context,
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target, tex_format, NULL, info, plane, valign, NULL, NULL);
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mem->cv_mem = cv_mem;
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mem->gl_data = gl_data;
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mem->gl_notify = gl_notify;
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GST_MINI_OBJECT_FLAG_SET (mem, GST_MEMORY_FLAG_READONLY);
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return mem;
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}
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GstIOSGLMemory *
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gst_ios_gl_memory_new_wrapped (GstGLContext * context,
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GstAppleCoreVideoMemory * cv_mem,
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GstGLTextureTarget target,
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GstGLFormat tex_format,
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guint tex_id,
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GstVideoInfo * info,
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guint plane,
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GstVideoAlignment * valign, gpointer gl_data, GDestroyNotify gl_notify)
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{
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return _ios_gl_memory_new (context, cv_mem, target, tex_format, tex_id, info,
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plane, valign, gl_data, gl_notify);
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}
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