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fd13e9e96d
This goal of this allocator is mainly to allow tracking the memory. Currently, when a buffer memory has been modified, the buffer and it's memory is disposed and lost until the stream is restarted.
137 lines
4.9 KiB
C
137 lines
4.9 KiB
C
/*
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* Copyright (C) 2014 Collabora Ltd.
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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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*/
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#ifndef __GST_V4L2_ALLOCATOR_H__
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#define __GST_V4L2_ALLOCATOR_H__
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#include "ext/videodev2.h"
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#include <gst/gst.h>
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#include <gst/gstatomicqueue.h>
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_ALLOCATOR (gst_v4l2_allocator_get_type())
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#define GST_IS_V4L2_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_ALLOCATOR))
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#define GST_IS_V4L2_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_ALLOCATOR))
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#define GST_V4L2_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_V4L2_ALLOCATOR, GstV4l2AllocatorClass))
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#define GST_V4L2_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_ALLOCATOR, GstV4l2Allocator))
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#define GST_V4L2_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_ALLOCATOR, GstV4l2AllocatorClass))
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#define GST_V4L2_ALLOCATOR_CAST(obj) ((GstV4l2Allocator *)(obj))
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#define GST_V4L2_ALLOCATOR_CAN_REQUEST(obj,type) \
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(GST_OBJECT_FLAG_IS_SET (obj, GST_V4L2_ALLOCATOR_FLAG_ ## type ## _REQBUFS))
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#define GST_V4L2_ALLOCATOR_CAN_ALLOCATE(obj,type) \
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(GST_OBJECT_FLAG_IS_SET (obj, GST_V4L2_ALLOCATOR_FLAG_ ## type ## _CREATE_BUF))
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typedef struct _GstV4l2Allocator GstV4l2Allocator;
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typedef struct _GstV4l2AllocatorClass GstV4l2AllocatorClass;
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typedef struct _GstV4l2MemoryGroup GstV4l2MemoryGroup;
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typedef struct _GstV4l2Memory GstV4l2Memory;
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typedef enum _GstV4l2Capabilities GstV4l2Capabilities;
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typedef enum _GstV4l2Return GstV4l2Return;
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enum _GstV4l2AllocatorFlags
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{
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GST_V4L2_ALLOCATOR_FLAG_MMAP_REQBUF = (GST_ALLOCATOR_FLAG_LAST << 0),
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GST_V4L2_ALLOCATOR_FLAG_MMAP_CREATE_BUF = (GST_ALLOCATOR_FLAG_LAST << 1),
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GST_V4L2_ALLOCATOR_FLAG_USERPTR_REQBUF = (GST_ALLOCATOR_FLAG_LAST << 2),
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GST_V4L2_ALLOCATOR_FLAG_USERPTR_CREATE_BUF = (GST_ALLOCATOR_FLAG_LAST << 3),
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GST_V4L2_ALLOCATOR_FLAG_DMABUF_REQBUF = (GST_ALLOCATOR_FLAG_LAST << 4),
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GST_V4L2_ALLOCATOR_FLAG_DMABUF_CREATE_BUF = (GST_ALLOCATOR_FLAG_LAST << 5),
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};
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enum _GstV4l2Return
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{
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GST_V4L2_OK = 0,
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GST_V4L2_ERROR = -1,
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GST_V4L2_BUSY = -2
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};
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struct _GstV4l2Memory
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{
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GstMemory mem;
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gint plane;
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GstV4l2MemoryGroup *group;
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gpointer data;
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};
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struct _GstV4l2MemoryGroup
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{
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gint n_mem;
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GstMemory * mem[VIDEO_MAX_PLANES];
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gint mems_allocated;
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struct v4l2_buffer buffer;
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struct v4l2_plane planes[VIDEO_MAX_PLANES];
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};
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struct _GstV4l2Allocator
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{
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GstAllocator parent;
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gint video_fd;
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guint32 count;
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guint32 type;
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guint32 memory;
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struct v4l2_format format;
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gboolean can_allocate;
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gboolean active;
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GstV4l2MemoryGroup * groups[VIDEO_MAX_FRAME];
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GstAtomicQueue *free_queue;
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GstAtomicQueue *pending_queue;
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};
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struct _GstV4l2AllocatorClass {
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GstAllocatorClass parent_class;
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};
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GType gst_v4l2_allocator_get_type(void);
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gboolean gst_is_v4l2_memory (GstMemory * mem);
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gboolean gst_v4l2_allocator_is_active (GstV4l2Allocator * allocator);
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guint gst_v4l2_allocator_get_size (GstV4l2Allocator * allocator);
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GstV4l2Allocator* gst_v4l2_allocator_new (GstObject *parent, gint video_fd,
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struct v4l2_format * format);
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guint gst_v4l2_allocator_start (GstV4l2Allocator * allocator,
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guint32 count, guint32 memory);
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gboolean gst_v4l2_allocator_stop (GstV4l2Allocator * allocator);
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GstV4l2MemoryGroup* gst_v4l2_allocator_alloc_mmap (GstV4l2Allocator * allocator);
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void gst_v4l2_allocator_flush (GstV4l2Allocator * allocator);
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gboolean gst_v4l2_allocator_qbuf (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group);
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GstV4l2MemoryGroup* gst_v4l2_allocator_dqbuf (GstV4l2Allocator * allocator);
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void gst_v4l2_allocator_reset_size (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group);
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G_END_DECLS
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#endif /* __GST_V4L2_ALLOCATOR_H__ */
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