[FFmpeg-user] Reporting GCC 7.3.0 compiler-warnings on FFmpeg git (955fa23)

Reino Wijnsma rwijnsma at xs4all.nl
Thu Apr 19 14:22:38 EEST 2018

On 19-4-2018 12:13, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>> libavformat/hlsenc.c: In function 'get_default_pattern_localtime_fmt':
>> libavformat/hlsenc.c:1676:63: warning: unknown conversion type character 's' in format
>>         return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p)
> What does "grep HAVE_LIBC_MSVCRT config.h" show for you?

>> libavutil/hwcontext_d3d11va.c: In function 'd3d11va_transfer_data':
>> libavutil/hwcontext_d3d11va.c:413:49: warning: passing argument 3 of 'av_image_copy' from incompatible pointer type
> Does changing the third argument of av_image_copy() in libavutil/imgutils.h
> into "const uint8_t * const src_data[4]" silence anything?
I take it you meant this one?

diff --git a/libavutil/imgutils.h b/libavutil/imgutils.h
index 5b790ec..9530c6e 100644
--- a/libavutil/imgutils.h
+++ b/libavutil/imgutils.h
@@ -107,7 +107,7 @@ int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
  * @param src_linesize linesize for the image plane in src
 void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
-                         const uint8_t *src, int src_linesize,
+                         const uint8_t *src_data[4], int src_linesize,
                          int bytewidth, int height);

Result: same warning messages as before.

> (Only hwcontext_d3d11va.o testing required, breaks imgutils.o compilation)
I'm still rather new to all of this and normally I would always run make on FFmpeg. Can you tell me how I can compile just this one file?

-- Reino

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