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