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fftools/opt_common: check the return value of av_hwdevice_get_type_name before printing it

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It may be NULL, as is the case for D3D11VA_VLD.

Running "ffmpeg -h decoder=h264" on a Windows build

Before:
Decoder h264 [H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]:
    Supported hardware devices: dxva2 (null) d3d11va cuda

After:
Decoder h264 [H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]:
    Supported hardware devices: dxva2 d3d11va cuda

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2022-09-12 09:57:56 -03:00
parent 9903ba28c2
commit 130483449e
1 changed files with 4 additions and 1 deletions
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5
fftools/opt_common.c
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@ -335,9 +335,12 @@ static void print_codec(const AVCodec *c)
printf(" Supported hardware devices: ");
for (int i = 0;; i++) {
const AVCodecHWConfig *config = avcodec_get_hw_config(c, i);
const char *name;
if (!config)
break;
printf("%s ", av_hwdevice_get_type_name(config->device_type));
name = av_hwdevice_get_type_name(config->device_type);
if (name)
printf("%s ", name);
}
printf("\n");
}