[FFmpeg-devel] [PATCH] gdigrab: Allow capturing a window by its handle

[Lena]

I'm so sorry, will resend immediately.


Andreas Rheinhardt via ffmpeg-devel:

> Lena via ffmpeg-devel:
>> x11grab can capture windows by their ID, but gdigrab can only capture
>> windows by their names, internally calling FindWindowW to lookup its
>> handle.
>>
>> This patch simply allows the user to specify a window handle directly.
>> Signed-off-by: Lena <lena at nihil.gay>
>> ---
>>   libavdevice/gdigrab.c | 6 +++++-
>>   1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/libavdevice/gdigrab.c b/libavdevice/gdigrab.c
>> index c069232472..05d3c0c929 100644
>> --- a/libavdevice/gdigrab.c
>> +++ b/libavdevice/gdigrab.c
>> @@ -273,9 +273,13 @@ gdigrab_read_header(AVFormatContext *s1)
>>           }
>>       } else if (!strcmp(filename, "desktop")) {
>>           hwnd = NULL;
>> +    } else if (!strncmp(filename, "hwnd=", 5)) {
>> +        name = filename + 5;
>> +        +        hwnd = strtol(name, NULL, 0);
> This won't even compile due to the extra '+'.
>
>>       } else {
>>           av_log(s1, AV_LOG_ERROR,
>> -               "Please use \"desktop\" or \"title=<windowname>\" to
>> specify your target.\n");
>> +               "Please use \"desktop\", \"title=<windowname>\" or
>> \"hwnd=<hwnd>\" to specify your target.\n");
>>           ret = AVERROR(EIO);
>>           goto error;
>>       }
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