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https://github.com/RGBCube/serenity
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430b265cd4
The SI prefixes "k", "M", "G" mean "10^3", "10^6", "10^9". The IEC prefixes "Ki", "Mi", "Gi" mean "2^10", "2^20", "2^30". Let's use the correct name, at least in code. Only changes the name of the constants, no other behavior change.
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/StringView.h>
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#include <LibAudio/Buffer.h>
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#include <LibCore/File.h>
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namespace Audio {
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class Buffer;
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// Parses a WAV file and produces an Audio::Buffer.
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class WavLoader {
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public:
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explicit WavLoader(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<Buffer> get_more_samples(size_t max_bytes_to_read_from_input = 128 * KiB);
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void reset();
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void seek(const int position);
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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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RefPtr<Core::File> file() const { return m_file; }
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private:
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bool parse_header();
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RefPtr<Core::File> m_file;
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String m_error_string;
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OwnPtr<ResampleHelper> 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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}
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