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https://github.com/RGBCube/serenity
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4c8341d080
When playing an ABuffer, the count of samples were determined by the size of the SharedBuffer. This caused small pauses of up to 512 samples during the playback, when the size of the shared buffer was rounded up to a multiple of 4096. This problem was amplified by the fact that the AResampleHelper was created every time a new chunk of audio was to be processed, causing inconsistencies in the playback of wav files.
43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
#pragma once
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#include <AK/String.h>
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#include <AK/RefPtr.h>
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#include <AK/StringView.h>
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#include <LibCore/CFile.h>
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#include <LibAudio/ABuffer.h>
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class ABuffer;
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namespace AK {
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class ByteBuffer;
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}
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// Parses a WAV file and produces an ABuffer instance from it
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class AWavLoader {
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public:
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explicit AWavLoader(const StringView& path);
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bool has_error() const { return !m_error_string.is_null(); }
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const char* error_string() { return m_error_string.characters(); }
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RefPtr<ABuffer> get_more_samples(size_t max_bytes_to_read_from_input = 128 * KB);
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int loaded_samples() const { return m_loaded_samples; }
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int total_samples() const { return m_total_samples; }
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u32 sample_rate() const { return m_sample_rate; }
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u16 num_channels() const { return m_num_channels; }
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u16 bits_per_sample() const { return m_bits_per_sample; }
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private:
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bool parse_header();
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RefPtr<CFile> m_file;
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String m_error_string;
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OwnPtr<AResampleHelper> m_resampler;
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u32 m_sample_rate { 0 };
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u16 m_num_channels { 0 };
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u16 m_bits_per_sample { 0 };
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int m_loaded_samples { 0 };
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int m_total_samples { 0 };
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};
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