1 files changed, 143 insertions, 0 deletions
diff --git a/Source/Core/AudioCommon/WaveFile.cpp b/Source/Core/AudioCommon/WaveFile.cpp
new file mode 100644
index 0000000000..f73b484fe7
--- /dev/null
+++ b/Source/Core/AudioCommon/WaveFile.cpp
@@ -0,0 +1,143 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "Common.h"
+#include "WaveFile.h"
+#include "../Core/ConfigManager.h"
+
+enum {BUF_SIZE = 32*1024};
+
+WaveFileWriter::WaveFileWriter():
+	skip_silence(false),
+	audio_size(0),
+	conv_buffer(NULL)
+{
+}
+
+WaveFileWriter::~WaveFileWriter()
+{
+	delete [] conv_buffer;
+	Stop();
+}
+
+bool WaveFileWriter::Start(const char *filename, unsigned int HLESampleRate)
+{
+	if (!conv_buffer)
+		conv_buffer = new short[BUF_SIZE];
+
+	// Check if the file is already open
+	if (file)
+	{
+		PanicAlertT("The file %s was already open, the file header will not be written.", filename);
+		return false;
+	}
+
+	file.Open(filename, "wb");
+	if (!file)
+	{
+		PanicAlertT("The file %s could not be opened for writing. Please check if it's already opened by another program.", filename);
+		return false;
+	}
+
+	audio_size = 0;
+
+	// -----------------
+	// Write file header
+	// -----------------
+	Write4("RIFF");
+	Write(100 * 1000 * 1000);  // write big value in case the file gets truncated
+	Write4("WAVE");
+	Write4("fmt ");
+
+	Write(16);  // size of fmt block
+	Write(0x00020001); //two channels, uncompressed
+
+	const u32 sample_rate = HLESampleRate;
+	Write(sample_rate);
+	Write(sample_rate * 2 * 2); //two channels, 16bit
+
+	Write(0x00100004);
+	Write4("data");
+	Write(100 * 1000 * 1000 - 32);
+
+	// We are now at offset 44
+	if (file.Tell() != 44)
+		PanicAlert("Wrong offset: %lld", (long long)file.Tell());
+
+	return true;
+}
+
+void WaveFileWriter::Stop()
+{
+	// u32 file_size = (u32)ftello(file);
+	file.Seek(4, SEEK_SET);
+	Write(audio_size + 36);
+
+	file.Seek(40, SEEK_SET);
+	Write(audio_size);
+
+	file.Close();
+}
+
+void WaveFileWriter::Write(u32 value)
+{
+	file.WriteArray(&value, 1);
+}
+
+void WaveFileWriter::Write4(const char *ptr)
+{
+	file.WriteBytes(ptr, 4);
+}
+
+void WaveFileWriter::AddStereoSamples(const short *sample_data, u32 count)
+{
+	if (!file)
+		PanicAlertT("WaveFileWriter - file not open.");
+
+	if (skip_silence)
+	{
+		bool all_zero = true;
+
+		for (u32 i = 0; i < count * 2; i++)
+		{
+			if (sample_data[i])
+				all_zero = false;
+		}
+
+		if (all_zero)
+			return;
+	}
+
+	file.WriteBytes(sample_data, count * 4);
+	audio_size += count * 4;
+}
+
+void WaveFileWriter::AddStereoSamplesBE(const short *sample_data, u32 count)
+{
+	if (!file)
+		PanicAlertT("WaveFileWriter - file not open.");
+
+	if (count > BUF_SIZE * 2)
+		PanicAlert("WaveFileWriter - buffer too small (count = %u).", count);
+
+	if (skip_silence)
+	{
+		bool all_zero = true;
+
+		for (u32 i = 0; i < count * 2; i++)
+		{
+			if (sample_data[i])
+				all_zero = false;
+		}
+
+		if (all_zero)
+			return;
+	}
+
+	for (u32 i = 0; i < count * 2; i++)
+		conv_buffer[i] = Common::swap16((u16)sample_data[i]);
+
+	file.WriteBytes(conv_buffer, count * 4);
+	audio_size += count * 4;
+}