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LibAudio: Buffer API improvements

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This consists of two changes: First, a utility function create_empty
allows the user to quickly create an empty buffer. Second, most creation
functions now return a NonnullRefPtr, as their failure causes a VERIFY
crash anyways.
This commit is contained in:
kleines Filmröllchen 2021-10-03 16:35:07 +02:00 • committed by Brian Gianforcaro
parent 14d330faba
commit ec8bd8116d
2 changed files with 11 additions and 5 deletions
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4
Userland/Libraries/LibAudio/Buffer.cpp
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@ -122,13 +122,13 @@ static double read_norm_sample_8(InputMemoryStream& stream)
return double(sample) / NumericLimits<u8>::max();
}
RefPtr<Buffer> Buffer::from_pcm_data(ReadonlyBytes data, int num_channels, PcmSampleFormat sample_format)
NonnullRefPtr<Buffer> Buffer::from_pcm_data(ReadonlyBytes data, int num_channels, PcmSampleFormat sample_format)
{
InputMemoryStream stream { data };
return from_pcm_stream(stream, num_channels, sample_format, data.size() / (pcm_bits_per_sample(sample_format) / 8));
}
RefPtr<Buffer> Buffer::from_pcm_stream(InputMemoryStream& stream, int num_channels, PcmSampleFormat sample_format, int num_samples)
NonnullRefPtr<Buffer> Buffer::from_pcm_stream(InputMemoryStream& stream, int num_channels, PcmSampleFormat sample_format, int num_samples)
{
Vector<Sample> fdata;
fdata.ensure_capacity(num_samples);