gst-plugins-base-1.19.1.patch

From 638a01381ea5ba8348138476bc88b338234cd858 Mon Sep 17 00:00:00 2001
From: osy <osy@turing.llc>
Date: Mon, 1 Aug 2022 13:20:20 -0700
Subject: [PATCH] gstaudiobasesrc: reset clock when caps change

This follows similar code from gstaudiobasesink. When the caps change, we
need to reset the clock, otherwise a long period of silence will be
recorded.
---
 gst-libs/gst/audio/gstaudiobasesrc.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/gst-libs/gst/audio/gstaudiobasesrc.c b/gst-libs/gst/audio/gstaudiobasesrc.c
index a384e8eb3..6977f11e4 100644
--- a/gst-libs/gst/audio/gstaudiobasesrc.c
+++ b/gst-libs/gst/audio/gstaudiobasesrc.c
@@ -299,6 +299,14 @@ clock_disabled:
   }
 }
 
+static gboolean
+gst_audio_base_src_is_self_provided_clock (GstAudioBaseSrc * sink)
+{
+  return (sink->clock && GST_IS_AUDIO_CLOCK (sink->clock) &&
+      GST_AUDIO_CLOCK_CAST (sink->clock)->func ==
+      (GstAudioClockGetTimeFunc) gst_audio_base_src_get_time);
+}
+
 static GstClockTime
 gst_audio_base_src_get_time (GstClock * clock, GstAudioBaseSrc * src)
 {
@@ -555,6 +563,11 @@ gst_audio_base_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
   if (!gst_audio_ring_buffer_acquire (src->ringbuffer, spec))
     goto acquire_error;
 
+  /* If we use our own clock, we need to adjust the offset since it will now
+   * restart from zero */
+  if (gst_audio_base_src_is_self_provided_clock (src))
+    gst_audio_clock_reset (GST_AUDIO_CLOCK (src->clock), 0);
+
   /* calculate actual latency and buffer times */
   spec->latency_time = spec->segsize * GST_MSECOND / (rate * bpf);
   spec->buffer_time =
@@ -1142,9 +1155,7 @@ gst_audio_base_src_change_state (GstElement * element,
       /* Only post clock-provide messages if this is the clock that
        * we've created. If the subclass has overridden it the subclass
        * should post this messages whenever necessary */
-      if (src->clock && GST_IS_AUDIO_CLOCK (src->clock) &&
-          GST_AUDIO_CLOCK_CAST (src->clock)->func ==
-          (GstAudioClockGetTimeFunc) gst_audio_base_src_get_time)
+      if (gst_audio_base_src_is_self_provided_clock (src))
         gst_element_post_message (element,
             gst_message_new_clock_provide (GST_OBJECT_CAST (element),
                 src->clock, TRUE));
@@ -1163,9 +1174,7 @@ gst_audio_base_src_change_state (GstElement * element,
       /* Only post clock-lost messages if this is the clock that
        * we've created. If the subclass has overridden it the subclass
        * should post this messages whenever necessary */
-      if (src->clock && GST_IS_AUDIO_CLOCK (src->clock) &&
-          GST_AUDIO_CLOCK_CAST (src->clock)->func ==
-          (GstAudioClockGetTimeFunc) gst_audio_base_src_get_time)
+      if (gst_audio_base_src_is_self_provided_clock (src))
         gst_element_post_message (element,
             gst_message_new_clock_lost (GST_OBJECT_CAST (element), src->clock));
       gst_audio_ring_buffer_set_flushing (src->ringbuffer, TRUE);
-- 
2.28.0