[FFmpeg-devel] [PATCH v11 2/6] libavformat/avisynth.c: Remove MAX_PATH limit

[Soft Works]

> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of Nil
> Admirari
> Sent: Saturday, April 23, 2022 10:56 PM
> To: ffmpeg-devel at ffmpeg.org
> Subject: [FFmpeg-devel] [PATCH v11 2/6] libavformat/avisynth.c: Remove
> MAX_PATH limit
> 
> ---
>  libavformat/avisynth.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/libavformat/avisynth.c b/libavformat/avisynth.c
> index 8ba2bdea..f7bea8c3 100644
> --- a/libavformat/avisynth.c
> +++ b/libavformat/avisynth.c
> @@ -34,6 +34,7 @@
>  /* Platform-specific directives. */
>  #ifdef _WIN32
>    #include "compat/w32dlfcn.h"
> +  #include "libavutil/wchar_filename.h"
>    #undef EXTERN_C
>    #define AVISYNTH_LIB "avisynth"
>  #else
> @@ -810,8 +811,7 @@ static int avisynth_open_file(AVFormatContext *s)
>      AVS_Value arg, val;
>      int ret;
>  #ifdef _WIN32
> -    char filename_ansi[MAX_PATH * 4];
> -    wchar_t filename_wc[MAX_PATH * 4];
> +    char *filename_ansi = NULL;
>  #endif
> 
>      if (ret = avisynth_context_create(s))
> @@ -819,10 +819,12 @@ static int avisynth_open_file(AVFormatContext
> *s)
> 
>  #ifdef _WIN32
>      /* Convert UTF-8 to ANSI code page */
> -    MultiByteToWideChar(CP_UTF8, 0, s->url, -1, filename_wc, MAX_PATH
> * 4);
> -    WideCharToMultiByte(CP_THREAD_ACP, 0, filename_wc, -1,
> filename_ansi,
> -                        MAX_PATH * 4, NULL, NULL);
> +    if (utf8toansi(s->url, &filename_ansi)) {
> +        ret = AVERROR_UNKNOWN;
> +        goto fail;
> +    }
>      arg = avs_new_value_string(filename_ansi);
> +    av_free(filename_ansi);
>  #else
>      arg = avs_new_value_string(s->url);
>  #endif
> --
> 2.32.0
> 

LGTM. I had assumed it would depend on 6/6