1 /* GStreamer 2 * Copyright (C) 2006 Edward Hervey <edward@fluendo.com> 3 * 4 * gstmultiqueue.h: 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 23 #ifndef __GST_MULTI_QUEUE_H__ 24 #define __GST_MULTI_QUEUE_H__ 25 26 #include <gst/gst.h> 27 #include <gst/base/gstdataqueue.h> 28 29 G_BEGIN_DECLS 30 31 #define GST_TYPE_MULTI_QUEUE \ 32 (gst_multi_queue_get_type()) 33 #define GST_MULTI_QUEUE(obj) \ 34 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULTI_QUEUE,GstMultiQueue)) 35 #define GST_MULTI_QUEUE_CLASS(klass) \ 36 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULTI_QUEUE,GstMultiQueueClass)) 37 #define GST_IS_MULTI_QUEUE(obj) \ 38 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULTI_QUEUE)) 39 #define GST_IS_MULTI_QUEUE_CLASS(obj) \ 40 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULTI_QUEUE)) 41 42 typedef struct _GstMultiQueue GstMultiQueue; 43 typedef struct _GstMultiQueueClass GstMultiQueueClass; 44 45 typedef struct _GstMultiQueuePad GstMultiQueuePad; 46 typedef struct _GstMultiQueuePadClass GstMultiQueuePadClass; 47 48 /** 49 * GstMultiQueue: 50 * 51 * Opaque #GstMultiQueue structure. 52 */ 53 struct _GstMultiQueue { 54 GstElement element; 55 56 gboolean sync_by_running_time; 57 gboolean use_interleave; 58 GstClockTime min_interleave_time; 59 60 /* number of queues */ 61 guint nbqueues; 62 63 /* The list of individual queues */ 64 GList *queues; 65 guint32 queues_cookie; 66 67 GstDataQueueSize max_size, extra_size; 68 gboolean use_buffering; 69 gint low_watermark, high_watermark; 70 gboolean buffering; 71 gint buffering_percent; 72 73 guint counter; /* incoming object counter, use atomic accesses */ 74 guint32 highid; /* contains highest id of last outputted object */ 75 GstClockTimeDiff high_time; /* highest start running time */ 76 77 GMutex qlock; /* Global queue lock (vs object lock or individual */ 78 /* queues lock). Protects nbqueues, queues, global */ 79 /* GstMultiQueueSize, counter and highid */ 80 81 gint numwaiting; /* number of not-linked pads waiting */ 82 83 gboolean buffering_percent_changed; 84 GMutex buffering_post_lock; /* assures only one posted at a time */ 85 86 GstClockTime interleave; /* Input interleave */ 87 GstClockTimeDiff last_interleave_update; 88 89 GstClockTime unlinked_cache_time; 90 }; 91 92 struct _GstMultiQueueClass { 93 GstElementClass parent_class; 94 95 /* signals emitted when ALL queues are either full or empty */ 96 void (*underrun) (GstMultiQueue *queue); 97 void (*overrun) (GstMultiQueue *queue); 98 }; 99 100 G_GNUC_INTERNAL GType gst_multi_queue_get_type (void); 101 102 G_END_DECLS 103 104 105 #endif /* __GST_MULTI_QUEUE_H__ */ 106