[PATCH 1/5] mf: Raise sample request events for sample grabber stream.
Nikolay Sivov
nsivov at codeweavers.com
Fri Jun 7 08:08:58 CDT 2019
Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
dlls/mf/samplegrabber.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/dlls/mf/samplegrabber.c b/dlls/mf/samplegrabber.c
index 3f9644432d..23bfa06fce 100644
--- a/dlls/mf/samplegrabber.c
+++ b/dlls/mf/samplegrabber.c
@@ -613,6 +613,11 @@ static struct scheduled_sample *stream_get_next_sample(struct sample_grabber_str
return sample;
}
+static void sample_grabber_stream_request_sample(struct sample_grabber_stream *stream)
+{
+ IMFStreamSink_QueueEvent(&stream->IMFStreamSink_iface, MEStreamSinkRequestSample, &GUID_NULL, S_OK, NULL);
+}
+
static HRESULT WINAPI sample_grabber_stream_timer_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result)
{
struct sample_grabber_stream *stream = impl_from_IMFAsyncCallback(iface);
@@ -634,6 +639,7 @@ static HRESULT WINAPI sample_grabber_stream_timer_callback_Invoke(IMFAsyncCallba
if (FAILED(hr = stream_schedule_sample(stream, sample)))
WARN("Failed to schedule a sample, hr %#x.\n", hr);
}
+ sample_grabber_stream_request_sample(stream);
}
LeaveCriticalSection(&stream->cs);
@@ -950,6 +956,7 @@ static void sample_grabber_set_state(struct sample_grabber *grabber, enum sink_s
MEStreamSinkStarted, /* SINK_STATE_RUNNING */
};
BOOL set_state = FALSE;
+ unsigned int i;
EnterCriticalSection(&grabber->cs);
@@ -970,6 +977,12 @@ static void sample_grabber_set_state(struct sample_grabber *grabber, enum sink_s
if (set_state)
{
grabber->stream->state = state;
+ if (state == SINK_STATE_RUNNING)
+ {
+ /* Every transition to running state sends a bunch requests to build up initial queue. */
+ for (i = 0; i < 4; ++i)
+ sample_grabber_stream_request_sample(grabber->stream);
+ }
IMFStreamSink_QueueEvent(&grabber->stream->IMFStreamSink_iface, events[state], &GUID_NULL, S_OK, NULL);
}
}
--
2.20.1
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