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wasapi2: Fix choppy rendering

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This reverts questionable commit 009bc15f33
which looks completely wrong.

The GstWasapi2RingBuffer:buffer_size variable is used to
calculate available buffer size we can write
(i.e., available size = buffer_size - padding_size).
But the commit makes the size to be exactly same as buffer period.
Then, it can confuse this element as if the endpoint buffer is full on
I/O event callback (if padding size is equal to buffer period)
but it's not true.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2870
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6132>
This commit is contained in:
Seungha Yang 2024-02-17 00:11:32 +09:00 committed by GStreamer Marge Bot
parent fb02516b75
commit 93f0135798
1 changed files with 5 additions and 9 deletions
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14
subprojects/gst-plugins-bad/sys/wasapi2/gstwasapi2ringbuffer.cpp
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@ -1045,6 +1045,7 @@ gst_wasapi2_ring_buffer_acquire (GstAudioRingBuffer * buf,
ComPtr < IAudioStreamVolume > audio_volume;
GstAudioChannelPosition *position = nullptr;
guint period = 0;
gint segtotal = 2;
GST_DEBUG_OBJECT (buf, "Acquire");
@ -1139,18 +1140,13 @@ gst_wasapi2_ring_buffer_acquire (GstAudioRingBuffer * buf,
g_assert (period > 0);
if (self->buffer_size > period) {
GST_INFO_OBJECT (self, "Updating buffer size %d -> %d", self->buffer_size,
period);
self->buffer_size = period;
}
spec->segsize = period * GST_AUDIO_INFO_BPF (&buf->spec.info);
spec->segtotal = 2;
segtotal = (self->buffer_size / period);
spec->segtotal = MAX (segtotal, 2);
GST_INFO_OBJECT (self,
"Buffer size: %d frames, period: %d frames, segsize: %d bytes",
self->buffer_size, period, spec->segsize);
"Buffer size: %d frames, period: %d frames, segsize: %d bytes, "
"segtotal: %d", self->buffer_size, period, spec->segsize, spec->segtotal);
if (self->device_class == GST_WASAPI2_CLIENT_DEVICE_CLASS_RENDER) {
ComPtr < IAudioRenderClient > render_client;