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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4c4ff33d1f
Original commit message from CVS: Trying to fix the mess that I made with the two previous commits. First commit, doing something wrong (fixing comparisons of signed and unsigned). Second commit, trying to revert the previous, but changing other things and reverting unrelated work of other people. And this third, hopefully fixes it.
233 lines
7.2 KiB
C
233 lines
7.2 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstevent.h: Header for GstEvent subsystem
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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_EVENT_H__
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#define __GST_EVENT_H__
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#include <gst/gsttypes.h>
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#include <gst/gstdata.h>
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#include <gst/gstformat.h>
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#include <gst/gstobject.h>
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#include <gst/gststructure.h>
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G_BEGIN_DECLS
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typedef enum {
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GST_EVENT_UNKNOWN = 0,
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GST_EVENT_EOS = 1,
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GST_EVENT_FLUSH = 2,
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GST_EVENT_EMPTY = 3,
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GST_EVENT_DISCONTINUOUS = 4,
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/*GST_EVENT_NEW_MEDIA = 5, <- removed */
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GST_EVENT_QOS = 6,
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GST_EVENT_SEEK = 7,
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GST_EVENT_SEEK_SEGMENT = 8,
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GST_EVENT_SEGMENT_DONE = 9,
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GST_EVENT_SIZE = 10,
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GST_EVENT_RATE = 11,
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GST_EVENT_FILLER = 12,
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GST_EVENT_TS_OFFSET = 13,
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GST_EVENT_INTERRUPT = 14,
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GST_EVENT_NAVIGATION = 15,
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GST_EVENT_TAG = 16
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} GstEventType;
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extern GType _gst_event_type;
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#define GST_EVENT_TRACE_NAME "GstEvent"
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#define GST_TYPE_EVENT (_gst_event_type)
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#define GST_EVENT(event) ((GstEvent*)(event))
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#define GST_IS_EVENT(event) (GST_DATA_TYPE(event) == GST_TYPE_EVENT)
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#define GST_EVENT_TYPE(event) (GST_EVENT(event)->type)
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#define GST_EVENT_TIMESTAMP(event) (GST_EVENT(event)->timestamp)
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#define GST_EVENT_SRC(event) (GST_EVENT(event)->src)
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#define GST_EVENT_IS_INTERRUPT(event) (GST_EVENT_TYPE (event) == GST_EVENT_INTERRUPT)
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#define GST_SEEK_FORMAT_SHIFT 0
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#define GST_SEEK_METHOD_SHIFT 16
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#define GST_SEEK_FLAGS_SHIFT 20
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#define GST_SEEK_FORMAT_MASK 0x0000ffff
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#define GST_SEEK_METHOD_MASK 0x000f0000
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#define GST_SEEK_FLAGS_MASK 0xfff00000
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typedef enum {
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GST_EVENT_FLAG_NONE = 0,
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/* indicates negative rates are supported */
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GST_RATE_FLAG_NEGATIVE = (1 << 1)
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} GstEventFlag;
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typedef struct
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{
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GstEventType type;
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GstEventFlag flags;
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} GstEventMask;
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#ifndef GST_DISABLE_DEPRECATED
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#ifdef G_HAVE_ISO_VARARGS
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#define GST_EVENT_MASK_FUNCTION(type,functionname, ...) \
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static const GstEventMask* \
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functionname (type pad) \
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{ \
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static const GstEventMask masks[] = { \
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__VA_ARGS__, \
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{ 0, } \
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}; \
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return masks; \
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}
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#elif defined(G_HAVE_GNUC_VARARGS)
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#define GST_EVENT_MASK_FUNCTION(type,functionname, a...) \
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static const GstEventMask* \
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functionname (type pad) \
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{ \
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static const GstEventMask masks[] = { \
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a, \
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{ 0, } \
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}; \
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return masks; \
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}
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#endif
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#endif
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/* seek events, extends GstEventFlag */
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typedef enum {
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/* | with some format */
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/* | with one of these */
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GST_SEEK_METHOD_CUR = (1 << (GST_SEEK_METHOD_SHIFT + 0)),
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GST_SEEK_METHOD_SET = (1 << (GST_SEEK_METHOD_SHIFT + 1)),
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GST_SEEK_METHOD_END = (1 << (GST_SEEK_METHOD_SHIFT + 2)),
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/* | with optional seek flags */
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/* seek flags */
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GST_SEEK_FLAG_FLUSH = (1 << (GST_SEEK_FLAGS_SHIFT + 0)),
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GST_SEEK_FLAG_ACCURATE = (1 << (GST_SEEK_FLAGS_SHIFT + 1)),
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GST_SEEK_FLAG_KEY_UNIT = (1 << (GST_SEEK_FLAGS_SHIFT + 2)),
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GST_SEEK_FLAG_SEGMENT_LOOP = (1 << (GST_SEEK_FLAGS_SHIFT + 3))
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} GstSeekType;
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typedef enum {
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GST_SEEK_CERTAIN,
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GST_SEEK_FUZZY
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} GstSeekAccuracy;
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typedef struct
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{
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GstFormat format;
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gint64 value;
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} GstFormatValue;
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#define GST_EVENT_SEEK_TYPE(event) (GST_EVENT(event)->event_data.seek.type)
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#define GST_EVENT_SEEK_FORMAT(event) (GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FORMAT_MASK)
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#define GST_EVENT_SEEK_METHOD(event) (GST_EVENT_SEEK_TYPE(event) & GST_SEEK_METHOD_MASK)
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#define GST_EVENT_SEEK_FLAGS(event) (GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FLAGS_MASK)
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#define GST_EVENT_SEEK_OFFSET(event) (GST_EVENT(event)->event_data.seek.offset)
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#define GST_EVENT_SEEK_ENDOFFSET(event) (GST_EVENT(event)->event_data.seek.endoffset)
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#define GST_EVENT_SEEK_ACCURACY(event) (GST_EVENT(event)->event_data.seek.accuracy)
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#define GST_EVENT_DISCONT_NEW_MEDIA(event) (GST_EVENT(event)->event_data.discont.new_media)
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#define GST_EVENT_DISCONT_OFFSET(event,i) (GST_EVENT(event)->event_data.discont.offsets[i])
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#define GST_EVENT_DISCONT_OFFSET_LEN(event) (GST_EVENT(event)->event_data.discont.noffsets)
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#define GST_EVENT_SIZE_FORMAT(event) (GST_EVENT(event)->event_data.size.format)
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#define GST_EVENT_SIZE_VALUE(event) (GST_EVENT(event)->event_data.size.value)
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#define GST_EVENT_RATE_VALUE(event) (GST_EVENT(event)->event_data.rate.value)
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struct _GstEvent {
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GstData data;
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GstEventType type;
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guint64 timestamp;
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GstObject *src;
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union {
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struct {
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GstSeekType type;
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gint64 offset;
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gint64 endoffset;
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GstSeekAccuracy accuracy;
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} seek;
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struct {
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GstFormatValue offsets[8];
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gint noffsets;
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gboolean new_media;
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} discont;
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struct {
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GstFormat format;
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gint64 value;
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} size;
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struct {
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gdouble value;
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} rate;
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struct {
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GstStructure *structure;
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} structure;
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} event_data;
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gpointer _gst_reserved[GST_PADDING];
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};
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void _gst_event_initialize (void);
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GType gst_event_get_type (void);
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GstEvent* gst_event_new (GstEventType type);
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/* refcounting */
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#define gst_event_ref(ev) GST_EVENT (gst_data_ref (GST_DATA (ev)))
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#define gst_event_ref_by_count(ev,c) GST_EVENT (gst_data_ref_by_count (GST_DATA (ev), c))
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#define gst_event_unref(ev) gst_data_unref (GST_DATA (ev))
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/* copy buffer */
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#define gst_event_copy(ev) GST_EVENT (gst_data_copy (GST_DATA (ev)))
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gboolean gst_event_masks_contains (const GstEventMask *masks, GstEventMask *mask);
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/* seek event */
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GstEvent* gst_event_new_seek (GstSeekType type, gint64 offset);
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GstEvent* gst_event_new_segment_seek (GstSeekType type, gint64 start, gint64 stop);
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/* size events */
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GstEvent* gst_event_new_size (GstFormat format, gint64 value);
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/* discontinous event */
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GstEvent* gst_event_new_discontinuous (gboolean new_media,
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GstFormat format1, ...);
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GstEvent* gst_event_new_discontinuous_valist (gboolean new_media,
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GstFormat format1,
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va_list var_args);
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gboolean gst_event_discont_get_value (GstEvent *event, GstFormat format, gint64 *value);
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#define gst_event_new_filler() gst_event_new(GST_EVENT_FILLER)
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/* flush events */
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#define gst_event_new_flush() gst_event_new(GST_EVENT_FLUSH)
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G_END_DECLS
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#endif /* __GST_EVENT_H__ */
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