/* GStreamer * * gstv4lmjpegsrc.h: hardware MJPEG video source element * * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef __GST_V4LMJPEGSRC_H__ #define __GST_V4LMJPEGSRC_H__ #include <gstv4lelement.h> #include <sys/time.h> #include <videodev_mjpeg.h> G_BEGIN_DECLS #define GST_TYPE_V4LMJPEGSRC \ (gst_v4lmjpegsrc_get_type()) #define GST_V4LMJPEGSRC(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSRC,GstV4lMjpegSrc)) #define GST_V4LMJPEGSRC_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSRC,GstV4lMjpegSrcClass)) #define GST_IS_V4LMJPEGSRC(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSRC)) #define GST_IS_V4LMJPEGSRC_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSRC)) typedef struct _GstV4lMjpegSrc GstV4lMjpegSrc; typedef struct _GstV4lMjpegSrcClass GstV4lMjpegSrcClass; struct _GstV4lMjpegSrc { GstV4lElement v4lelement; /* pads */ GstPad *srcpad; /* buffer/capture info */ struct mjpeg_sync bsync; struct mjpeg_requestbuffers breq; /* num of queued frames and some GThread stuff * to wait if there's not enough */ gint8 *frame_queue_state; GMutex *mutex_queue_state; GCond *cond_queue_state; gint num_queued; gint queue_frame; /* True if we want to stop */ gboolean quit, is_capturing; /* A/V sync... frame counter and internal cache */ gulong handled; gint last_frame; gint last_size; gint need_writes; gulong last_seq; /* clock */ GstClock *clock; /* time to substract from clock time to get back to timestamp */ GstClockTime substract_time; /* how often are we going to use each frame? */ gint *use_num_times; /* how are we going to push buffers? */ gboolean use_fixed_fps; /* end size */ gint end_width, end_height; /* caching values */ #if 0 gint x_offset; gint y_offset; gint frame_width; gint frame_height; #endif gint quality; gint numbufs; }; struct _GstV4lMjpegSrcClass { GstV4lElementClass parent_class; void (*frame_capture) (GObject *object); void (*frame_drop) (GObject *object); void (*frame_insert) (GObject *object); void (*frame_lost) (GObject *object, gint num_lost); }; GType gst_v4lmjpegsrc_get_type(void); G_END_DECLS #endif /* __GST_V4LMJPEGSRC_H__ */