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/* GStreamer
*
* Copyright © 2018 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <gst/gst.h>
#include "gstpipewireclock.h"
GST_DEBUG_CATEGORY_STATIC (gst_pipewire_clock_debug_category);
#define GST_CAT_DEFAULT gst_pipewire_clock_debug_category
G_DEFINE_TYPE (GstPipeWireClock, gst_pipewire_clock, GST_TYPE_SYSTEM_CLOCK);
GstClock *
gst_pipewire_clock_new (struct pw_stream *stream, GstClockTime last_time)
{
GstPipeWireClock *clock;
clock = g_object_new (GST_TYPE_PIPEWIRE_CLOCK, NULL);
clock->stream = stream;
clock->last_time = last_time;
clock->time_offset = last_time;
return GST_CLOCK_CAST (clock);
}
static GstClockTime
gst_pipewire_clock_get_internal_time (GstClock * clock)
{
GstPipeWireClock *pclock = (GstPipeWireClock *) clock;
GstClockTime result;
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
#if 0
struct pw_time t;
if (pclock->stream == NULL ||
pw_stream_get_time (pclock->stream, &t) < 0 ||
t.rate.denom == 0)
return pclock->last_time;
result = gst_util_uint64_scale_int (t.ticks, GST_SECOND * t.rate.num, t.rate.denom);
result += SPA_TIMESPEC_TO_NSEC(&ts) - t.now;
result += pclock->time_offset;
pclock->last_time = result;
GST_DEBUG ("%"PRId64", %d/%d %"PRId64" %"PRId64,
t.ticks, t.rate.num, t.rate.denom, t.now, result);
#else
result = SPA_TIMESPEC_TO_NSEC(&ts);
result += pclock->time_offset;
pclock->last_time = result;
#endif
return result;
}
static void
gst_pipewire_clock_finalize (GObject * object)
{
GstPipeWireClock *clock = GST_PIPEWIRE_CLOCK (object);
GST_DEBUG_OBJECT (clock, "finalize");
G_OBJECT_CLASS (gst_pipewire_clock_parent_class)->finalize (object);
}
static void
gst_pipewire_clock_class_init (GstPipeWireClockClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstClockClass *gstclock_class = GST_CLOCK_CLASS (klass);
gobject_class->finalize = gst_pipewire_clock_finalize;
gstclock_class->get_internal_time = gst_pipewire_clock_get_internal_time;
GST_DEBUG_CATEGORY_INIT (gst_pipewire_clock_debug_category, "pipewireclock", 0,
"debug category for pipewireclock object");
}
static void
gst_pipewire_clock_init (GstPipeWireClock * clock)
{
GST_OBJECT_FLAG_SET (clock, GST_CLOCK_FLAG_CAN_SET_MASTER);
}
void
gst_pipewire_clock_reset (GstPipeWireClock * clock, GstClockTime time)
{
GstClockTimeDiff time_offset;
if (clock->last_time >= time)
time_offset = clock->last_time - time;
else
time_offset = -(time - clock->last_time);
clock->time_offset = time_offset;
GST_DEBUG_OBJECT (clock,
"reset clock to %" GST_TIME_FORMAT ", last %" GST_TIME_FORMAT
", offset %" GST_STIME_FORMAT, GST_TIME_ARGS (time),
GST_TIME_ARGS (clock->last_time), GST_STIME_ARGS (time_offset));
}
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