upipe-modules: add interlacing pipe

Add upipe_interlace pipe to preform temporal field interlacing.

Author: quarium

include/upipe-modules/upipe_interlace.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2026 EasyTools
+ *
+ * Authors: Arnaud de Turckheim
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/** @file
+ * @short Upipe interlacing module
+ */
+
+#ifndef _UPIPE_MODULES_UPIPE_INTERLACE_H_
+/** @hidden */
+#define _UPIPE_MODULES_UPIPE_INTERLACE_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "upipe/upipe.h"
+
+#define UPIPE_INTERLACE_SIGNATURE UBASE_FOURCC('i','n','t','l')
+
+/** @This returns the management structure for all interlace pipes.
+ *
+ * @return pointer to manager
+ */
+struct upipe_mgr *upipe_interlace_mgr_alloc(void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

lib/upipe-modules/Build.mk

@@ -35,6 +35,7 @@ libupipe_modules-includes = \
     upipe_htons.h \
     upipe_http_source.h \
     upipe_idem.h \
+    upipe_interlace.h \
     upipe_m3u_reader.h \
     upipe_match_attr.h \
     upipe_multicat_probe.h \
@@ -120,6 +121,7 @@ libupipe_modules-src = \
     upipe_htons.c \
     upipe_http_source.c \
     upipe_idem.c \
+    upipe_interlace.c \
     upipe_m3u_reader.c \
     upipe_match_attr.c \
     upipe_multicat_probe.c \