avdevice/pulse_audio_enc: Use av_rescale() to avoid integer overflow
Fixes: CID1503075 Unintentional integer overflow Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -471,10 +471,11 @@ static av_cold int pulse_write_header(AVFormatContext *h)
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s->nonblocking = (h->flags & AVFMT_FLAG_NONBLOCK);
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if (s->buffer_duration) {
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int64_t bytes = s->buffer_duration;
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bytes *= st->codecpar->ch_layout.nb_channels * st->codecpar->sample_rate *
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av_get_bytes_per_sample(st->codecpar->format);
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bytes /= 1000;
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int64_t bytes = av_rescale(s->buffer_duration,
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st->codecpar->ch_layout.nb_channels *
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(int64_t)st->codecpar->sample_rate *
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av_get_bytes_per_sample(st->codecpar->format),
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1000);
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buffer_attributes.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1));
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av_log(s, AV_LOG_DEBUG,
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"Buffer duration: %ums recalculated into %"PRId64" bytes buffer.\n",
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