decoder/pcm: check InputStream::KnownSize()
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@ -43,9 +43,8 @@ pcm_stream_decode(Decoder &decoder, InputStream &is)
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const double time_to_size = audio_format.GetTimeToSize();
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float total_time = -1;
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const auto size = is.GetSize();
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if (size >= 0)
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total_time = size / time_to_size;
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if (is.KnownSize())
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total_time = is.GetSize() / time_to_size;
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decoder_initialized(decoder, audio_format,
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is.IsSeekable(), total_time);
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