[FFmpeg-devel] [PATCH] Two warnings fixes and one Vulkan. (PR #21074)

["Kacper Michajłow via ffmpeg-devel" <ffmpeg-devel@ffmpeg.org>]

PR #21074 opened by Kacper Michajłow (kasper93)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21074
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21074.patch


From ac05f5aa3f94d7fbcfd0008abe2165c9b6314c14 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Mon, 1 Dec 2025 21:09:34 +0100
Subject: [PATCH 1/3] avdevice/gdigrab: suppress int to pointer cast warning
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fixes: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
 libavdevice/gdigrab.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavdevice/gdigrab.c b/libavdevice/gdigrab.c
index 08a41c304b..fa9ba27db0 100644
--- a/libavdevice/gdigrab.c
+++ b/libavdevice/gdigrab.c
@@ -279,7 +279,7 @@ gdigrab_read_header(AVFormatContext *s1)
         char *p;
         name = filename + 5;
 
-        hwnd = (HWND) strtoull(name, &p, 0);
+        hwnd = (HWND)(intptr_t) strtoull(name, &p, 0);
 
         if (p == NULL || p == name || p[0] != '\0')
         {
-- 
2.49.1


From fd38520e02eea1cb9b43d99cde7357df1c69e9f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Mon, 1 Dec 2025 21:21:25 +0100
Subject: [PATCH 2/3] fftools/cmdutils: use strcpy directly, the length is
 computed already
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

There is no need to scan for NULL, if we inject it ourselves.

Fixes: warning: 'strncat' specified bound 10 equals source length [-Wstringop-overflow=]
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
 fftools/cmdutils.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
index e906d4506d..9a365c228d 100644
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
@@ -962,8 +962,7 @@ FILE *get_preset_file(char *filename, size_t filename_size,
                     datadir, desired_size, sizeof *datadir);
                 if (new_datadir) {
                     datadir = new_datadir;
-                    datadir[datadir_len] = 0;
-                    strncat(datadir, "/ffpresets",  desired_size - 1 - datadir_len);
+                    strcpy(datadir + datadir_len, "/ffpresets");
                     base[2] = datadir;
                 }
             }
-- 
2.49.1


From 37f7f59beaabf6bc56726ffbd465cf69b43f2919 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Mon, 1 Dec 2025 21:30:26 +0100
Subject: [PATCH 3/3] avutil/vulkan: fix device memory size truncation
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

size_t cannot fit VK_WHOLE_SIZE on 32-bit builds.

Fixes: warning: conversion from 'long long unsigned int' to 'size_t' {aka 'unsigned int'} changes value from '18446744073709551615' to '4294967295'

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
 libavutil/vulkan.c | 2 +-
 libavutil/vulkan.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavutil/vulkan.c b/libavutil/vulkan.c
index c3d8c1d0d9..38ae7b296a 100644
--- a/libavutil/vulkan.c
+++ b/libavutil/vulkan.c
@@ -1168,7 +1168,7 @@ int ff_vk_map_buffers(FFVulkanContext *s, FFVkBuffer **buf, uint8_t *mem[],
 }
 
 int ff_vk_flush_buffer(FFVulkanContext *s, FFVkBuffer *buf,
-                       size_t offset, size_t mem_size,
+                       VkDeviceSize offset, VkDeviceSize mem_size,
                        int flush)
 {
     VkResult ret;
diff --git a/libavutil/vulkan.h b/libavutil/vulkan.h
index 868788c2a4..29116bcb2c 100644
--- a/libavutil/vulkan.h
+++ b/libavutil/vulkan.h
@@ -527,7 +527,7 @@ int ff_vk_create_buf(FFVulkanContext *s, FFVkBuffer *buf, size_t size,
  * Flush or invalidate a single buffer, with a given size and offset.
  */
 int ff_vk_flush_buffer(FFVulkanContext *s, FFVkBuffer *buf,
-                       size_t offset, size_t mem_size,
+                       VkDeviceSize offset, VkDeviceSize mem_size,
                        int flush);
 
 /**
-- 
2.49.1

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