3 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@indt.org.br>
5 * 2009 Texas Instruments, Inc - http://www.ti.com/
7 * gstv4l2bufferpool.h V4L2 buffer pool class
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
25 #ifndef __GST_V4L2_BUFFER_POOL_H__
26 #define __GST_V4L2_BUFFER_POOL_H__
30 typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
31 typedef struct _GstV4l2BufferPoolClass GstV4l2BufferPoolClass;
32 typedef struct _GstV4l2Meta GstV4l2Meta;
34 #include "gstv4l2object.h"
35 #include "gstv4l2allocator.h"
37 GST_DEBUG_CATEGORY_EXTERN (v4l2buffer_debug);
42 #define GST_TYPE_V4L2_BUFFER_POOL (gst_v4l2_buffer_pool_get_type())
43 #define GST_IS_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_BUFFER_POOL))
44 #define GST_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_BUFFER_POOL, GstV4l2BufferPool))
45 #define GST_V4L2_BUFFER_POOL_CAST(obj) ((GstV4l2BufferPool*)(obj))
47 #define GST_V4L2_BUFFER_POOL_OPTION_CROP_META "GstV4l2BufferPoolOptionCropMeta"
49 struct _GstV4l2BufferPool
53 GstV4l2Object *obj; /* the v4l2 object */
54 gint video_fd; /* a dup(2) of the v4l2object's video_fd */
56 GstV4l2Allocator *vallocator;
57 GstAllocator *allocator;
58 GstAllocationParams params;
59 GstBufferPool *other_pool;
62 gboolean add_videometa;
63 gboolean add_cropmeta;
65 guint num_buffers; /* number of buffers we use */
66 guint num_allocated; /* number of buffers allocated by the driver */
67 guint num_queued; /* number of buffers queued in the driver */
68 guint copy_threshold; /* when our pool runs lower, start handing out copies */
72 GstBuffer *buffers[VIDEO_MAX_FRAME];
75 gulong group_released_handler;
78 struct _GstV4l2BufferPoolClass
80 GstBufferPoolClass parent_class;
83 GType gst_v4l2_buffer_pool_get_type (void);
85 GstBufferPool * gst_v4l2_buffer_pool_new (GstV4l2Object *obj, GstCaps *caps);
87 GstFlowReturn gst_v4l2_buffer_pool_process (GstV4l2BufferPool * bpool, GstBuffer ** buf);
89 gboolean gst_v4l2_buffer_pool_flush (GstV4l2BufferPool * pool);
91 void gst_v4l2_buffer_pool_set_other_pool (GstV4l2BufferPool * pool,
92 GstBufferPool * other_pool);
96 #endif /*__GST_V4L2_BUFFER_POOL_H__ */