LibAudio: Tolerate a file sample rate lower than the AudioServer's

Previously, trying to load a wav file in aplay or SoundPlayer with a
sample rate less than 44100 would crash in an assertion failure trying
to unchecked_append to a vector that was not resized properly.

1 files changed, 2 insertions, 1 deletions

diff --git a/Userland/Libraries/LibAudio/Resampler.h b/Userland/Libraries/LibAudio/Resampler.h
index 86799d9197..c4c2e11af2 100644
--- a/Userland/Libraries/LibAudio/Resampler.h
+++ b/Userland/Libraries/LibAudio/Resampler.h
@@ -62,7 +62,8 @@ public:
     template<ArrayLike<SampleType> Samples, size_t vector_inline_capacity = 0>
     ErrorOr<void> try_resample_into_end(Vector<SampleType, vector_inline_capacity>& destination, Samples&& to_resample)
     {
-        TRY(destination.try_ensure_capacity(destination.size() + to_resample.size() * ceil_div(m_source, m_target)));
+        float ratio = (m_source > m_target) ? static_cast<float>(m_source) / m_target : static_cast<float>(m_target) / m_source;
+        TRY(destination.try_ensure_capacity(destination.size() + to_resample.size() * ratio));
         for (auto sample : to_resample) {
             process_sample(sample, sample);