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Keep track of the currently configured format and setting in the v4l2object. Pass the v4l2object to the bufferpool constructor so that the bufferpool can know everything about the currently configured settings. This also allows us to remove some awkward code.
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/* GStreamer
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* 2006 Edgard Lima <edgard.lima@indt.org.br>
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* 2009 Texas Instruments, Inc - http://www.ti.com/
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*
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* gstv4l2bufferpool.h V4L2 buffer pool class
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GSTV4L2BUFFER_H__
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#define __GSTV4L2BUFFER_H__
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#include <gst/gst.h>
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#include "v4l2_calls.h"
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GST_DEBUG_CATEGORY_EXTERN (v4l2buffer_debug);
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G_BEGIN_DECLS
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GType gst_v4l2_buffer_pool_get_type (void);
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#define GST_TYPE_V4L2_BUFFER_POOL (gst_v4l2_buffer_pool_get_type())
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#define GST_IS_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_BUFFER_POOL))
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#define GST_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_BUFFER_POOL, GstV4l2BufferPool))
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typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
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typedef struct _GstV4l2BufferPoolClass GstV4l2BufferPoolClass;
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typedef struct _GstMetaV4l2 GstMetaV4l2;
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struct _GstV4l2BufferPool
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{
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GObject parent;
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GstV4l2Object *obj; /* the v4l2 object */
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gboolean requeuebuf; /* if true, unusued buffers are automatically re-QBUF'd */
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enum v4l2_buf_type type; /* V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_BUF_TYPE_VIDEO_OUTPUT */
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GMutex *lock;
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gboolean running; /* with lock */
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gint num_live_buffers; /* number of buffers not with driver */
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GAsyncQueue* avail_buffers;/* pool of available buffers, not with the driver and which aren't held outside the bufferpool */
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gint video_fd; /* a dup(2) of the v4l2object's video_fd */
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guint buffer_count;
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GstBuffer **buffers;
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};
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struct _GstV4l2BufferPoolClass
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{
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GObjectClass parent_class;
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};
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struct _GstMetaV4l2 {
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GstMeta meta;
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gpointer mem;
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struct v4l2_buffer vbuffer;
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/* FIXME: have GstV4l2Src* instead, as this has GstV4l2BufferPool* */
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/* FIXME: do we really want to fix this if GstV4l2Buffer/Pool is shared
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* between v4l2src and v4l2sink??
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*/
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GstV4l2BufferPool *pool;
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};
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const GstMetaInfo * gst_meta_v4l2_get_info (void);
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#define GST_META_V4L2_GET(buf) ((GstMetaV4l2 *)gst_buffer_get_meta(buf,gst_meta_v4l2_get_info()))
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#define GST_META_V4L2_ADD(buf) ((GstMetaV4l2 *)gst_buffer_add_meta(buf,gst_meta_v4l2_get_info(),NULL))
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void gst_v4l2_buffer_pool_destroy (GstV4l2BufferPool * pool);
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GstV4l2BufferPool *gst_v4l2_buffer_pool_new (GstV4l2Object *obj, gint num_buffers, gboolean requeuebuf);
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GstBuffer *gst_v4l2_buffer_pool_get (GstV4l2BufferPool *pool, gboolean blocking);
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gboolean gst_v4l2_buffer_pool_qbuf (GstV4l2BufferPool *pool, GstBuffer *buf);
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GstBuffer *gst_v4l2_buffer_pool_dqbuf (GstV4l2BufferPool *pool);
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gint gst_v4l2_buffer_pool_available_buffers (GstV4l2BufferPool *pool);
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#define GST_V4L2_BUFFER_POOL_LOCK(pool) g_mutex_lock ((pool)->lock)
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#define GST_V4L2_BUFFER_POOL_UNLOCK(pool) g_mutex_unlock ((pool)->lock)
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G_END_DECLS
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#endif /* __GSTV4L2BUFFER_H__ */
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