Rémi Bernon : winegstreamer: Reply with a video buffer pool to ALLOCATION queries.
Alexandre Julliard
julliard at winehq.org
Thu Jun 2 16:26:10 CDT 2022
Module: wine
Branch: master
Commit: f7ca5cfa27e433530f2725d44045ea5284fd332a
URL: https://source.winehq.org/git/wine.git/?a=commit;h=f7ca5cfa27e433530f2725d44045ea5284fd332a
Author: Rémi Bernon <rbernon at codeweavers.com>
Date: Thu May 12 23:59:38 2022 +0200
winegstreamer: Reply with a video buffer pool to ALLOCATION queries.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45988
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47084
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49715
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52183
Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
dlls/winegstreamer/wg_transform.c | 62 +++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/dlls/winegstreamer/wg_transform.c b/dlls/winegstreamer/wg_transform.c
index 93fe0039a63..0c1654567e5 100644
--- a/dlls/winegstreamer/wg_transform.c
+++ b/dlls/winegstreamer/wg_transform.c
@@ -58,6 +58,17 @@ struct wg_transform
GstCaps *output_caps;
};
+static bool is_caps_video(GstCaps *caps)
+{
+ const gchar *media_type;
+
+ if (!caps || !gst_caps_get_size(caps))
+ return false;
+
+ media_type = gst_structure_get_name(gst_caps_get_structure(caps, 0));
+ return g_str_has_prefix(media_type, "video/");
+}
+
static GstFlowReturn transform_sink_chain_cb(GstPad *pad, GstObject *parent, GstBuffer *buffer)
{
struct wg_transform *transform = gst_pad_get_element_private(pad);
@@ -81,6 +92,56 @@ static GstFlowReturn transform_sink_chain_cb(GstPad *pad, GstObject *parent, Gst
return GST_FLOW_OK;
}
+static gboolean transform_sink_query_cb(GstPad *pad, GstObject *parent, GstQuery *query)
+{
+ struct wg_transform *transform = gst_pad_get_element_private(pad);
+
+ GST_LOG("transform %p, type \"%s\".", transform, gst_query_type_get_name(query->type));
+
+ switch (query->type)
+ {
+ case GST_QUERY_ALLOCATION:
+ {
+ GstStructure *config;
+ gboolean needs_pool;
+ GstBufferPool *pool;
+ GstVideoInfo info;
+ GstCaps *caps;
+
+ gst_query_parse_allocation(query, &caps, &needs_pool);
+ if (!is_caps_video(caps) || !needs_pool)
+ break;
+
+ if (!gst_video_info_from_caps(&info, caps)
+ || !(pool = gst_video_buffer_pool_new()))
+ break;
+
+ if (!(config = gst_buffer_pool_get_config(pool)))
+ GST_ERROR("Failed to get pool %p config.", pool);
+ else
+ {
+ gst_buffer_pool_config_set_params(config, caps,
+ info.size, 0, 0);
+ if (!gst_buffer_pool_set_config(pool, config))
+ GST_ERROR("Failed to set pool %p config.", pool);
+ }
+
+ gst_query_add_allocation_pool(query, pool, info.size, 0, 0);
+
+ GST_INFO("Proposing pool %p, buffer size %#zx, for query %p.",
+ pool, info.size, query);
+
+ g_object_unref(pool);
+ return true;
+ }
+ default:
+ GST_WARNING("Ignoring \"%s\" query.", gst_query_type_get_name(query->type));
+ break;
+ }
+
+ return gst_pad_query_default(pad, parent, query);
+}
+
static gboolean transform_sink_event_cb(GstPad *pad, GstObject *parent, GstEvent *event)
{
struct wg_transform *transform = gst_pad_get_element_private(pad);
@@ -252,6 +313,7 @@ NTSTATUS wg_transform_create(void *args)
gst_pad_set_element_private(transform->my_sink, transform);
gst_pad_set_event_function(transform->my_sink, transform_sink_event_cb);
+ gst_pad_set_query_function(transform->my_sink, transform_sink_query_cb);
gst_pad_set_chain_function(transform->my_sink, transform_sink_chain_cb);
/* Since we append conversion elements, we don't want to filter decoders
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