From 2ec634bbfacb1f90850bb845e88559ae2958cbed Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Tue, 27 Aug 2024 10:31:04 +0200
Subject: [PATCH] added magic to change_pixfmt and cf/vo_pp wrap.

---
 src/capture_filter/change_pixfmt.c          | 6 ++++++
 src/vo_postprocess/capture_filter_wrapper.h | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/src/capture_filter/change_pixfmt.c b/src/capture_filter/change_pixfmt.c
index 3f2862375..3d262427c 100644
--- a/src/capture_filter/change_pixfmt.c
+++ b/src/capture_filter/change_pixfmt.c
@@ -41,17 +41,22 @@
 #include "config_win32.h"
 #endif /* HAVE_CONFIG_H */
 
+#include <stdint.h>
+
 #include "capture_filter.h"
 #include "debug.h"
 #include "lib_common.h"
 #include "utils/color_out.h"
 #include "video.h"
 #include "video_codec.h"
+#include "utils/macros.h"
 #include "vo_postprocess/capture_filter_wrapper.h"
 
+#define MAGIC to_fourcc('C', 'F', 'C', 'P')
 #define MOD_NAME "[change pixfmt cap. f.] "
 
 struct state_capture_filter_change_pixfmt {
+        uint32_t magic;
         codec_t to_codec;
         void *vo_pp_out_buffer; ///< buffer to write to if we use vo_pp wrapper (otherwise unused)
 };
@@ -68,6 +73,7 @@ static int init(struct module *parent, const char *cfg, void **state)
         }
 
         struct state_capture_filter_change_pixfmt *s = calloc(1, sizeof(struct state_capture_filter_change_pixfmt));
+        s->magic = MAGIC;
         s->to_codec = get_codec_from_name(cfg);
         if (!s->to_codec) {
                 log_msg(LOG_LEVEL_ERROR, MOD_NAME "Wrong codec: %s\n", cfg);
diff --git a/src/vo_postprocess/capture_filter_wrapper.h b/src/vo_postprocess/capture_filter_wrapper.h
index d27039f42..e0a738594 100644
--- a/src/vo_postprocess/capture_filter_wrapper.h
+++ b/src/vo_postprocess/capture_filter_wrapper.h
@@ -44,12 +44,17 @@
 #define CAPTURE_FILTER_WRAPPER_H_4106D5BE_4B1D_4367_B506_67B358514C50
 
 #include <assert.h>
+#include <stdint.h>
 
 #include "capture_filter.h"
+#include "utils/macros.h"
 #include "video_display.h"
 #include "vo_postprocess.h"
 
+#define CFW_MAGIC to_fourcc('V', 'P', 'C', 'F')
+
 struct vo_pp_capture_filter_wrapper {
+        uint32_t magic;
         void *state;           ///< capture filter state
         vo_postprocess_get_property_t get_property;
         struct video_frame *f;
@@ -65,6 +70,7 @@ static void *CF_WRAPPER_MERGE(vo_pp_init_, name)(const char *cfg) {\
         }\
         struct vo_pp_capture_filter_wrapper *s = (struct vo_pp_capture_filter_wrapper *) \
                         calloc(1, sizeof(struct vo_pp_capture_filter_wrapper));\
+        s->magic = CFW_MAGIC;\
         s->state = state;\
         s->get_property = get_prop_callb;\
         return s;\