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LibAudio+aplay: Make the aplay output look a little funner.

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Show some information about the file we're playing, and display how many
samples we've played out of how many total.

This might be a bit buggy as I haven't tested it with many different files,
but it's a start. :^)
This commit is contained in:
Andreas Kling 2019-07-28 21:52:30 +02:00
parent b44d3faa1c
commit ae4a9e017a
3 changed files with 31 additions and 13 deletions
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8
Libraries/LibAudio/AWavLoader.cpp
View file

@ -25,7 +25,10 @@ RefPtr<ABuffer> AWavLoader::get_more_samples()
auto raw_samples = m_file.read(128 * KB);
if (raw_samples.is_empty())
return nullptr;
return ABuffer::from_pcm_data(raw_samples, m_num_channels, m_bits_per_sample, m_sample_rate);
auto buffer = ABuffer::from_pcm_data(raw_samples, m_num_channels, m_bits_per_sample, m_sample_rate);
m_loaded_samples += buffer->sample_count();
return buffer;
}
bool AWavLoader::parse_header()
@ -125,6 +128,9 @@ bool AWavLoader::parse_header()
ok = ok && data_sz < INT32_MAX;
CHECK_OK("Data was too large");
int bytes_per_sample = (m_bits_per_sample / 8) * m_num_channels;
m_total_samples = data_sz / bytes_per_sample;
// Just make sure we're good before we read the data...
ASSERT(!stream.handle_read_failure());

9
Libraries/LibAudio/AWavLoader.h
View file

@ -20,6 +20,12 @@ public:
RefPtr<ABuffer> get_more_samples();
int loaded_samples() const { return m_loaded_samples; }
int total_samples() const { return m_total_samples; }
u32 sample_rate() const { return m_sample_rate; }
u16 num_channels() const { return m_num_channels; }
u16 bits_per_sample() const { return m_bits_per_sample; }
private:
bool parse_header();
CFile m_file;
@ -28,4 +34,7 @@ private:
u32 m_sample_rate { 0 };
u16 m_num_channels { 0 };
u16 m_bits_per_sample { 0 };
int m_loaded_samples { 0 };
int m_total_samples { 0 };
};