121 lines
3.0 KiB
C++
121 lines
3.0 KiB
C++
|
// Copyright (C) 2003-2008 Dolphin Project.
|
||
|
|
|
||
|
|
// This program is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU General Public License as published by
|
||
|
|
// the Free Software Foundation, version 2.0.
|
||
|
|
|
||
|
|
// This program is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU General Public License 2.0 for more details.
|
||
|
|
|
||
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
||
|
|
// If not, see http://www.gnu.org/licenses/
|
||
|
|
|
||
|
|
// Official SVN repository and contact information can be found at
|
||
|
|
// http://code.google.com/p/dolphin-emu/
|
||
|
|
|
||
|
|
#include "Common.h"
|
||
|
|
#include "WaveFile.h"
|
||
|
|
|
||
|
|
enum {BUF_SIZE = 32*1024};
|
||
|
|
|
||
|
|
WaveFileWriter::WaveFileWriter()
|
||
|
|
{
|
||
|
|
conv_buffer = 0;
|
||
|
|
skip_silence = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
WaveFileWriter::~WaveFileWriter()
|
||
|
|
{
|
||
|
|
delete [] conv_buffer;
|
||
|
|
Stop();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool WaveFileWriter::Start(const char *filename)
|
||
|
|
{
|
||
|
|
if (!conv_buffer)
|
||
|
|
conv_buffer = new short[BUF_SIZE];
|
||
|
|
|
||
|
|
if (file)
|
||
|
|
return false;
|
||
|
|
file = fopen(filename, "wb");
|
||
|
|
if (!file)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
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 = 32000;
|
||
|
|
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 (ftell(file) != 44)
|
||
|
|
PanicAlert("wrong offset: %i", ftell(file));
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaveFileWriter::Stop()
|
||
|
|
{
|
||
|
|
if (!file)
|
||
|
|
return;
|
||
|
|
u32 file_size = (u32)ftell(file);
|
||
|
|
fseek(file, 4, SEEK_SET);
|
||
|
|
Write(audio_size + 36);
|
||
|
|
fseek(file, 40, SEEK_SET);
|
||
|
|
Write(audio_size);
|
||
|
|
fclose(file);
|
||
|
|
file = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaveFileWriter::Write(u32 value)
|
||
|
|
{
|
||
|
|
fwrite(&value, 4, 1, file);
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaveFileWriter::Write4(const char *ptr)
|
||
|
|
{
|
||
|
|
fwrite(ptr, 4, 1, file);
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaveFileWriter::AddStereoSamples(const short *sample_data, int count)
|
||
|
|
{
|
||
|
|
if (!file)
|
||
|
|
PanicAlert("WaveFileWriter - file not open.");
|
||
|
|
if (skip_silence) {
|
||
|
|
bool all_zero = true;
|
||
|
|
for (int i = 0; i < count * 2; i++)
|
||
|
|
if (sample_data[i])
|
||
|
|
all_zero = false;
|
||
|
|
if (all_zero)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
fwrite(sample_data, count * 4, 1, file);
|
||
|
|
audio_size += count * 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaveFileWriter::AddStereoSamplesBE(const short *sample_data, int count)
|
||
|
|
{
|
||
|
|
if (!file)
|
||
|
|
PanicAlert("WaveFileWriter - file not open.");
|
||
|
|
if (count > BUF_SIZE * 2)
|
||
|
|
PanicAlert("WaveFileWriter - buffer too small (count = %i).", count);
|
||
|
|
if (skip_silence) {
|
||
|
|
bool all_zero = true;
|
||
|
|
for (int i = 0; i < count * 2; i++)
|
||
|
|
if (sample_data[i])
|
||
|
|
all_zero = false;
|
||
|
|
if (all_zero)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
for (int i = 0; i < count * 2; i++) {
|
||
|
|
conv_buffer[i] = Common::swap16((u16)sample_data[i]);
|
||
|
|
}
|
||
|
|
fwrite(conv_buffer, count * 4, 1, file);
|
||
|
|
audio_size += count * 4;
|
||
|
|
}
|