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va: allocator: broadcast when flushing

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This patch handles when the bufferpool request a new buffer while
flushing.

Also fixes the usage of g_cond_wait(), which demands to be used
inside a loop to avoid spurious wakeups.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1815>
This commit is contained in:
Víctor Manuel Jáquez Leal 2020-11-17 13:18:37 +01:00
parent 72ab56c376
commit 8fc50891b1
2 changed files with 24 additions and 5 deletions
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27
sys/va/gstvaallocator.c
View file

@ -407,6 +407,8 @@ struct _GstVaDmabufAllocator
GstVideoInfo info;
guint usage_hint;
gboolean flushing;
};
#define gst_va_dmabuf_allocator_parent_class dmabuf_parent_class
@ -659,9 +661,14 @@ gst_va_dmabuf_allocator_prepare_buffer (GstAllocator * allocator,
GST_OBJECT_LOCK (self);
/* if available mems, use them */
if (gst_atomic_queue_length (self->available_mems) == 0)
while (gst_atomic_queue_length (self->available_mems) == 0 && !self->flushing)
g_cond_wait (&self->buffer_cond, GST_OBJECT_GET_LOCK (self));
if (self->flushing) {
GST_OBJECT_UNLOCK (self);
return FALSE;
}
mem[0] = gst_atomic_queue_pop (self->available_mems);
surface = gst_va_memory_get_surface (mem[0]);
@ -696,9 +703,11 @@ gst_va_dmabuf_allocator_flush (GstAllocator * allocator)
GstVaDmabufAllocator *self = GST_VA_DMABUF_ALLOCATOR (allocator);
GST_OBJECT_LOCK (self);
self->flushing = TRUE;
_available_mems_flush (self->display, self->available_mems,
&self->surface_count);
g_cond_signal (&self->buffer_cond);
self->flushing = FALSE;
g_cond_broadcast (&self->buffer_cond);
GST_OBJECT_UNLOCK (self);
}
@ -862,6 +871,8 @@ struct _GstVaAllocator
GstVideoInfo info;
guint usage_hint;
gboolean flushing;
};
typedef struct _GstVaMemory GstVaMemory;
@ -1293,8 +1304,14 @@ gst_va_allocator_prepare_buffer (GstAllocator * allocator, GstBuffer * buffer)
VASurfaceID surface;
GST_OBJECT_LOCK (self);
if (self->flushing) {
GST_OBJECT_UNLOCK (self);
return FALSE;
}
/* if available mems, use them */
if (gst_atomic_queue_length (self->available_mems) == 0)
while (gst_atomic_queue_length (self->available_mems) == 0)
g_cond_wait (&self->buffer_cond, GST_OBJECT_GET_LOCK (self));
mem = gst_atomic_queue_pop (self->available_mems);
@ -1315,9 +1332,11 @@ gst_va_allocator_flush (GstAllocator * allocator)
GstVaAllocator *self = GST_VA_ALLOCATOR (allocator);
GST_OBJECT_LOCK (self);
self->flushing = TRUE;
_available_mems_flush (self->display, self->available_mems,
&self->surface_count);
g_cond_signal (&self->buffer_cond);
self->flushing = FALSE;
g_cond_broadcast (&self->buffer_cond);
GST_OBJECT_UNLOCK (self);
}

2
sys/va/gstvapool.c
View file

@ -315,7 +315,7 @@ gst_va_pool_acquire_buffer (GstBufferPool * pool, GstBuffer ** buffer,
}
gst_buffer_replace (buffer, NULL);
return GST_FLOW_ERROR;
return GST_FLOW_FLUSHING;
}
static void