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https://github.com/dolphin-emu/dolphin.git
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108087bb68
This change was done because with the previous method of dumping audio, the mixer would handle switching the RL being emitted by the DSP to LR, and thus would provide the proper channel orientation. Because we're now dumping directly from PushSamples() and PushStreamingSamples(), it was writing the right channel to the left channel of the wave file and vice versa.
150 lines
2.9 KiB
C++
150 lines
2.9 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <string>
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#include "AudioCommon/WaveFile.h"
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#include "Common/CommonTypes.h"
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#include "Core/ConfigManager.h"
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enum {BUF_SIZE = 32*1024};
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WaveFileWriter::WaveFileWriter():
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skip_silence(false),
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audio_size(0),
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conv_buffer(nullptr)
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{
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}
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WaveFileWriter::~WaveFileWriter()
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{
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delete [] conv_buffer;
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Stop();
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}
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bool WaveFileWriter::Start(const std::string& filename, unsigned int HLESampleRate)
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{
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if (!conv_buffer)
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conv_buffer = new short[BUF_SIZE];
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// Check if the file is already open
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if (file)
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{
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PanicAlertT("The file %s was already open, the file header will not be written.", filename.c_str());
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return false;
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}
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file.Open(filename, "wb");
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if (!file)
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{
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PanicAlertT("The file %s could not be opened for writing. Please check if it's already opened by another program.", filename.c_str());
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return false;
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}
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audio_size = 0;
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// -----------------
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// Write file header
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// -----------------
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Write4("RIFF");
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Write(100 * 1000 * 1000); // write big value in case the file gets truncated
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Write4("WAVE");
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Write4("fmt ");
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Write(16); // size of fmt block
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Write(0x00020001); //two channels, uncompressed
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const u32 sample_rate = HLESampleRate;
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Write(sample_rate);
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Write(sample_rate * 2 * 2); //two channels, 16bit
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Write(0x00100004);
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Write4("data");
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Write(100 * 1000 * 1000 - 32);
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// We are now at offset 44
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if (file.Tell() != 44)
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PanicAlert("Wrong offset: %lld", (long long)file.Tell());
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return true;
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}
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void WaveFileWriter::Stop()
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{
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// u32 file_size = (u32)ftello(file);
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file.Seek(4, SEEK_SET);
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Write(audio_size + 36);
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file.Seek(40, SEEK_SET);
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Write(audio_size);
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file.Close();
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}
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void WaveFileWriter::Write(u32 value)
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{
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file.WriteArray(&value, 1);
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}
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void WaveFileWriter::Write4(const char *ptr)
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{
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file.WriteBytes(ptr, 4);
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}
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void WaveFileWriter::AddStereoSamples(const short *sample_data, u32 count)
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{
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if (!file)
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PanicAlertT("WaveFileWriter - file not open.");
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if (skip_silence)
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{
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bool all_zero = true;
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for (u32 i = 0; i < count * 2; i++)
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{
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if (sample_data[i])
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all_zero = false;
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}
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if (all_zero)
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return;
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}
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file.WriteBytes(sample_data, count * 4);
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audio_size += count * 4;
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}
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void WaveFileWriter::AddStereoSamplesBE(const short *sample_data, u32 count)
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{
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if (!file)
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PanicAlertT("WaveFileWriter - file not open.");
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if (count > BUF_SIZE * 2)
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PanicAlert("WaveFileWriter - buffer too small (count = %u).", count);
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if (skip_silence)
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{
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bool all_zero = true;
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for (u32 i = 0; i < count * 2; i++)
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{
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if (sample_data[i])
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all_zero = false;
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}
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if (all_zero)
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return;
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}
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for (u32 i = 0; i < count; i++)
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{
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//Flip the audio channels from RL to LR
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conv_buffer[2 * i] = Common::swap16((u16)sample_data[2 * i + 1]);
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conv_buffer[2 * i + 1] = Common::swap16((u16)sample_data[2 * i]);
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}
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file.WriteBytes(conv_buffer, count * 4);
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audio_size += count * 4;
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}
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