void
gst_v4l2_allocator_flush (GstV4l2Allocator * allocator)
{
gint i;
GST_OBJECT_LOCK (allocator);
if (!g_atomic_int_get (&allocator->active))
goto done;
for (i = 0; i < allocator->count; i++) {
GstV4l2MemoryGroup *group = allocator->groups[i];
gint n;
if (IS_QUEUED (group->buffer)) {
UNSET_QUEUED (group->buffer);
gst_v4l2_allocator_reset_group (allocator, group);
for (n = 0; n < group->n_mem; n++)
gst_memory_unref (group->mem[n]);
}
}
done:
GST_OBJECT_UNLOCK (allocator);
}
static void
gst_v4l2_buffer_pool_release_buffer (GstBufferPool * bpool, GstBuffer * buffer)
{
GstV4l2BufferPool *pool = GST_V4L2_BUFFER_POOL (bpool);
GstBufferPoolClass *pclass = GST_BUFFER_POOL_CLASS (parent_class);
GstV4l2Object *obj = pool->obj;
GST_DEBUG_OBJECT (pool, "release buffer %p", buffer);
switch (obj->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
/* capture, put the buffer back in the queue so that we can refill it
* later. */
switch (obj->mode) {
case GST_V4L2_IO_RW:
/* release back in the pool */
pclass->release_buffer (bpool, buffer);
break;
case GST_V4L2_IO_DMABUF:
case GST_V4L2_IO_MMAP:
case GST_V4L2_IO_USERPTR:
case GST_V4L2_IO_DMABUF_IMPORT:
{
if (gst_v4l2_is_buffer_valid (buffer, NULL)) {
/* queue back in the device */
if (pool->other_pool)
gst_v4l2_buffer_pool_prepare_buffer (pool, buffer, NULL);
if (gst_v4l2_buffer_pool_qbuf (pool, buffer) != GST_FLOW_OK)
pclass->release_buffer (bpool, buffer);
} else {
/* Simply release invalide/modified buffer, the allocator will
* give it back later */
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
pclass->release_buffer (bpool, buffer);
}
break;
}
default:
g_assert_not_reached ();
break;
}
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
switch (obj->mode) {
case GST_V4L2_IO_RW:
/* release back in the pool */
pclass->release_buffer (bpool, buffer);
break;
case GST_V4L2_IO_MMAP:
case GST_V4L2_IO_DMABUF:
case GST_V4L2_IO_USERPTR:
case GST_V4L2_IO_DMABUF_IMPORT:
{
GstV4l2MemoryGroup *group;
guint index;
if (!gst_v4l2_is_buffer_valid (buffer, &group)) {
/* Simply release invalide/modified buffer, the allocator will
* give it back later */
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
pclass->release_buffer (bpool, buffer);
break;
}
index = group->buffer.index;
if (pool->buffers[index] == NULL) {
GST_LOG_OBJECT (pool, "buffer %u not queued, putting on free list",
index);
/* Remove qdata, this will unmap any map data in userptr */
gst_mini_object_set_qdata (GST_MINI_OBJECT (buffer),
GST_V4L2_IMPORT_QUARK, NULL, NULL);
/* reset to default size */
gst_v4l2_allocator_reset_group (pool->vallocator, group);
/* playback, put the buffer back in the queue to refill later. */
pclass->release_buffer (bpool, buffer);
} else {
/* We keep a ref on queued buffer, so this should never happen */
g_assert_not_reached ();
}
break;
}
default:
g_assert_not_reached ();
break;
}
break;
default:
g_assert_not_reached ();
break;
}
}
