gstreamer/sys/nvcodec/gstcudamemory.h

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/* GStreamer
* Copyright (C) <2018-2019> Seungha Yang <seungha.yang@navercorp.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_CUDA_MEMORY_H__
#define __GST_CUDA_MEMORY_H__
#include <gst/gst.h>
#include <gst/gstallocator.h>
#include <gst/video/video.h>
#include "gstcudaloader.h"
#include "gstcudacontext.h"
G_BEGIN_DECLS
#define GST_TYPE_CUDA_ALLOCATOR (gst_cuda_allocator_get_type())
#define GST_CUDA_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CUDA_ALLOCATOR,GstCudaAllocator))
#define GST_CUDA_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_CUDA_ALLOCATOR,GstCudaAllocatorClass))
#define GST_CUDA_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_CUDA_ALLOCATOR,GstCudaAllocatorClass))
#define GST_IS_CUDA_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CUDA_ALLOCATOR))
#define GST_IS_CUDA_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_CUDA_ALLOCATOR))
#define GST_CUDA_ALLOCATOR_CAST(obj) ((GstCudaAllocator *)(obj))
#define GST_CUDA_MEMORY_CAST(mem) ((GstCudaMemory *) (mem))
typedef struct _GstCudaAllocationParams GstCudaAllocationParams;
typedef struct _GstCudaAllocator GstCudaAllocator;
typedef struct _GstCudaAllocatorClass GstCudaAllocatorClass;
typedef struct _GstCudaMemory GstCudaMemory;
/**
* GST_MAP_CUDA:
*
* Flag indicating that we should map the CUDA device memory
* instead of to system memory.
*
* Combining #GST_MAP_CUDA with #GST_MAP_WRITE has the same semantics as though
* you are writing to CUDA device/host memory.
* Conversely, combining #GST_MAP_CUDA with
* #GST_MAP_READ has the same semantics as though you are reading from
* CUDA device/host memory
*/
#define GST_MAP_CUDA (GST_MAP_FLAG_LAST << 1)
#define GST_CUDA_MEMORY_TYPE_NAME "gst.cuda.memory"
/**
* GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY:
*
* Name of the caps feature for indicating the use of #GstCudaMemory
*/
#define GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY "memory:CUDAMemory"
struct _GstCudaAllocationParams
{
GstAllocationParams parent;
GstVideoInfo info;
};
struct _GstCudaAllocator
{
GstAllocator parent;
GstCudaContext *context;
};
struct _GstCudaAllocatorClass
{
GstAllocatorClass parent_class;
};
GType gst_cuda_allocator_get_type (void);
GstAllocator * gst_cuda_allocator_new (GstCudaContext * context);
GstMemory * gst_cuda_allocator_alloc (GstAllocator * allocator,
gsize size,
GstCudaAllocationParams * params);
/**
* GstCudaMemoryTransfer:
* @GST_CUDA_MEMORY_TRANSFER_NEED_DOWNLOAD: the device memory needs downloading
* to the staging memory
* @GST_CUDA_MEMORY_TRANSFER_NEED_UPLOAD: the staging memory needs uploading
* to the device memory
*/
typedef enum
{
GST_CUDA_MEMORY_TRANSFER_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 0),
GST_CUDA_MEMORY_TRANSFER_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 1)
} GstCudaMemoryTransfer;
struct _GstCudaMemory
{
GstMemory mem;
GstCudaContext *context;
CUdeviceptr data;
GstCudaAllocationParams alloc_params;
/* offset and stride of CUDA device memory */
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride;
/* allocated CUDA Host memory */
gpointer map_alloc_data;
/* aligned CUDA Host memory */
guint8 *align_data;
/* pointing align_data if the memory is mapped */
gpointer map_data;
gint map_count;
GMutex lock;
};
gboolean gst_is_cuda_memory (GstMemory * mem);
G_END_DECLS
#endif /* __GST_CUDA_MEMORY_H__ */