From f1ad7e2486d5605acca7f4c211f06a6935f23276 Mon Sep 17 00:00:00 2001
From: columbarius <co1umbarius@protonmail.com>
Date: Mon, 7 Dec 2020 14:57:33 +0100
Subject: [PATCH] filter: Add mappable dataTypes to SPA_PARAM_BUFFERS_dataType
 if PW_FILTER_PORT_MAP_BUFFERS is set for inputs

This lets consumer just set SPA_DATA_MemPtr as their supported dataType and will add all by PW_STREAM_MAP_BUFFERS supported dataTypes, which are made available with the MemPtr API to the param
---
 src/pipewire/filter.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/pipewire/filter.c b/src/pipewire/filter.c
index ca5e25cdf..91879ff25 100644
--- a/src/pipewire/filter.c
+++ b/src/pipewire/filter.c
@@ -188,6 +188,28 @@ static struct param *add_param(struct filter *impl, struct port *port,
 	if (p == NULL)
 		return NULL;
 
+	if (id == SPA_PARAM_Buffers && SPA_FLAG_IS_SET(port->flags, PW_FILTER_PORT_FLAG_MAP_BUFFERS) &&
+		port->direction == SPA_DIRECTION_INPUT)
+	{
+		const struct spa_pod_prop *pod_param;
+		uint32_t dataType = 0;
+
+		pod_param = spa_pod_find_prop(param, NULL, SPA_PARAM_BUFFERS_dataType);
+		if (pod_param != NULL)
+		{
+			spa_pod_get_int(&pod_param->value, (int32_t*)&dataType);
+			pw_log_debug(NAME" dataType: %d", dataType);
+			if ((dataType & (1<<SPA_DATA_MemPtr)) > 0)
+			{
+				pw_log_debug(NAME" Change dataType");
+				struct spa_pod_int *int_pod = (struct spa_pod_int*)&pod_param->value;
+				dataType = dataType | mappable_dataTypes;
+				pw_log_debug(NAME" dataType: %d", dataType);
+				int_pod->value = dataType;
+			}
+		}
+	}
+
 	p->id = id;
 	p->flags = flags;
 	p->param = SPA_MEMBER(p, sizeof(struct param), struct spa_pod);