Libraries: Move to Userland/Libraries/

Userland/Libraries/LibAudio/WavWriter.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2020, William McPherson <willmcpherson2@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/StringView.h>
+#include <LibCore/File.h>
+
+namespace Audio {
+
+class WavWriter {
+public:
+    WavWriter(const StringView& path, int sample_rate = 44100, int num_channels = 2, int bits_per_sample = 16);
+    WavWriter(int sample_rate = 44100, int num_channels = 2, int bits_per_sample = 16);
+    ~WavWriter();
+
+    bool has_error() const { return !m_error_string.is_null(); }
+    const char* error_string() const { return m_error_string.characters(); }
+
+    void write_samples(const u8* samples, size_t size);
+    void finalize(); // You can finalize manually or let the destructor do it.
+
+    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; }
+    RefPtr<Core::File> file() const { return m_file; }
+
+    void set_file(const StringView& path);
+    void set_num_channels(int num_channels) { m_num_channels = num_channels; }
+    void set_sample_rate(int sample_rate) { m_sample_rate = sample_rate; }
+    void set_bits_per_sample(int bits_per_sample) { m_bits_per_sample = bits_per_sample; }
+
+    void clear_error() { m_error_string = String(); }
+
+private:
+    void write_header();
+    RefPtr<Core::File> m_file;
+    String m_error_string;
+    bool m_finalized { false };
+
+    u32 m_sample_rate;
+    u16 m_num_channels;
+    u16 m_bits_per_sample;
+    u32 m_data_sz { 0 };
+};
+
+}