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122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* GStreamer
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*
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* gstv4lsrc.h: BT8x8/V4L video source element
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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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 __GST_V4LSRC_H__
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#define __GST_V4LSRC_H__
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#include <gstv4lelement.h>
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G_BEGIN_DECLS
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#define GST_TYPE_V4LSRC \
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(gst_v4lsrc_get_type())
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#define GST_V4LSRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LSRC,GstV4lSrc))
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#define GST_V4LSRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LSRC,GstV4lSrcClass))
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#define GST_IS_V4LSRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LSRC))
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#define GST_IS_V4LSRC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LSRC))
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typedef struct _GstV4lSrc GstV4lSrc;
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typedef struct _GstV4lSrcClass GstV4lSrcClass;
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enum
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{
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QUEUE_STATE_ERROR = -1,
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QUEUE_STATE_READY_FOR_QUEUE, /* the frame is ready to be queued for capture */
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QUEUE_STATE_QUEUED, /* the frame is queued for capture */
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QUEUE_STATE_SYNCED /* the frame is captured */
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};
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typedef enum
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{
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GST_V4LSRC_SYNC_MODE_CLOCK,
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GST_V4LSRC_SYNC_MODE_PRIVATE_CLOCK,
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GST_V4LSRC_SYNC_MODE_FIXED_FPS,
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GST_V4LSRC_SYNC_MODE_NONE,
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} GstV4lSrcSyncMode;
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struct _GstV4lSrc
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{
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GstV4lElement v4lelement;
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/* pads */
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GstPad *srcpad;
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/* capture/buffer info */
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struct video_mmap mmap;
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struct video_mbuf mbuf;
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guint buffer_size;
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GstClockTime timestamp_sync;
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/* num of queued frames and some GThread stuff
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* to wait if there's not enough */
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gint8 *frame_queue_state;
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GMutex *mutex_queue_state;
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GCond *cond_queue_state;
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gint num_queued;
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gint sync_frame, queue_frame;
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gboolean is_capturing;
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/* True if we want to stop */
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gboolean quit;
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/* A/V sync... frame counter and internal cache */
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gulong handled;
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gint last_frame;
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gint need_writes;
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gboolean need_discont;
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GstClockTime last_discont; /* gst_element_get_time () of last discont send */
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/* clock */
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GstClock *clock;
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/* time to substract from clock time to get back to timestamp */
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GstClockTime substract_time;
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/* how often are we going to use each frame? */
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gint *use_num_times;
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/* list of supported colourspaces (as integers) */
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GList *colourspaces;
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/* how are we going to timestamp buffers? */
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GstV4lSrcSyncMode syncmode;
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gboolean copy_mode;
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gboolean autoprobe; /* probe on startup ? */
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};
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struct _GstV4lSrcClass
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{
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GstV4lElementClass parent_class;
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void (*frame_capture) (GObject * object);
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void (*frame_drop) (GObject * object);
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void (*frame_insert) (GObject * object);
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};
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GType gst_v4lsrc_get_type (void);
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G_END_DECLS
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#endif /* __GST_V4LSRC_H__ */
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