[PATCH 2/3] evr/presenter: Place early samples back to the front of the queue.
Nikolay Sivov
nsivov at codeweavers.com
Wed Apr 6 09:41:58 CDT 2022
From: Andrew Eikum <aeikum at codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
dlls/evr/presenter.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/dlls/evr/presenter.c b/dlls/evr/presenter.c
index 1b119ce9cab..e70e25a19a7 100644
--- a/dlls/evr/presenter.c
+++ b/dlls/evr/presenter.c
@@ -429,15 +429,20 @@ static HRESULT video_presenter_sample_queue_init(struct video_presenter *present
return S_OK;
}
-static void video_presenter_sample_queue_push(struct video_presenter *presenter, IMFSample *sample)
+static void video_presenter_sample_queue_push(struct video_presenter *presenter, IMFSample *sample,
+ BOOL at_front)
{
struct sample_queue *queue = &presenter->thread.queue;
+ unsigned int idx;
EnterCriticalSection(&presenter->cs);
if (queue->used != queue->size)
{
- queue->back = (queue->back + 1) % queue->size;
- queue->samples[queue->back] = sample;
+ if (at_front)
+ idx = queue->front = (queue->size + queue->front - 1) % queue->size;
+ else
+ idx = queue->back = (queue->back + 1) % queue->size;
+ queue->samples[idx] = sample;
queue->used++;
IMFSample_AddRef(sample);
}
@@ -556,7 +561,7 @@ static void video_presenter_check_queue(struct video_presenter *presenter,
if (present)
video_presenter_sample_present(presenter, sample);
else
- video_presenter_sample_queue_push(presenter, sample);
+ video_presenter_sample_queue_push(presenter, sample, TRUE);
IMFSample_Release(sample);
@@ -580,7 +585,7 @@ static void video_presenter_schedule_sample(struct video_presenter *presenter, I
if (presenter->clock)
{
- video_presenter_sample_queue_push(presenter, sample);
+ video_presenter_sample_queue_push(presenter, sample, FALSE);
PostThreadMessageW(presenter->thread.tid, EVRM_PRESENT, 0, 0);
}
else
--
2.35.1
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