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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <string>
#include "AudioCommon/WaveFile.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Core/ConfigManager.h"
constexpr size_t WaveFileWriter::BUFFER_SIZE;
WaveFileWriter::WaveFileWriter()
{
}
WaveFileWriter::~WaveFileWriter()
{
Stop();
}
bool WaveFileWriter::Start(const std::string& filename, unsigned int HLESampleRate)
{
// Check if the file is already open
if (file)
{
PanicAlertT("The file %s was already open, the file header will not be written.", filename.c_str());
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.c_str());
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 > BUFFER_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; i++)
{
//Flip the audio channels from RL to LR
conv_buffer[2 * i] = Common::swap16((u16)sample_data[2 * i + 1]);
conv_buffer[2 * i + 1] = Common::swap16((u16)sample_data[2 * i]);
}
file.WriteBytes(conv_buffer.data(), count * 4);
audio_size += count * 4;
}
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