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1 // WavWriter.cpp: implementation of the WavWriter class.
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2 //
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3 //////////////////////////////////////////////////////////////////////
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4
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5 #include "stdafx.h"
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6 #include "WavWriter.h"
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7
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8 #include "../common/Util.h"
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9
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10 //////////////////////////////////////////////////////////////////////
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11 // Construction/Destruction
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12 //////////////////////////////////////////////////////////////////////
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13
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14 WavWriter::WavWriter()
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15 {
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16 m_file = NULL;
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17 m_len = 0;
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18 m_posSize = 0;
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19 }
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20
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21 WavWriter::~WavWriter()
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22 {
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23 if (m_file)
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24 Close();
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25 }
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26
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27 void WavWriter::Close()
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28 {
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29 // calculate the total file length
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30 u32 len = ftell(m_file)-8;
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31 fseek(m_file, 4, SEEK_SET);
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32 u8 data[4];
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33 utilPutDword(data, len);
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34 fwrite(data, 1, 4, m_file);
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35 // write out the size of the data section
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36 fseek(m_file, m_posSize, SEEK_SET);
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37 utilPutDword(data, m_len);
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38 fwrite(data, 1, 4, m_file);
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39 fclose(m_file);
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40 m_file = NULL;
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41 }
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42
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43 bool WavWriter::Open(const char *name)
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44 {
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45 if (m_file)
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46 Close();
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47 m_file = fopen(name, "wb");
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48
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49 if (!m_file)
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50 return false;
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51 // RIFF header
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52 u8 data[4] = { 'R', 'I', 'F', 'F' };
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53 fwrite(data, 1, 4, m_file);
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54 utilPutDword(data, 0);
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55 // write 0 for now. Will get filled during close
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56 fwrite(data, 1, 4, m_file);
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57 // write WAVE header
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58 u8 data2[4] = { 'W', 'A', 'V', 'E' };
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59 fwrite(data2, 1, 4, m_file);
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60 return true;
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61 }
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62
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63 void WavWriter::SetFormat(const WAVEFORMATEX *format)
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64 {
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65 if (m_file == NULL)
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66 return;
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67 // write fmt header
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68 u8 data[4] = { 'f', 'm', 't', ' ' };
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69 fwrite(data, 1, 4, m_file);
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70 u32 value = sizeof(WAVEFORMATEX);
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71 utilPutDword(data, value);
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72 fwrite(data, 1, 4, m_file);
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73 fwrite(format, 1, sizeof(WAVEFORMATEX), m_file);
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74 // start data header
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75 u8 data2[4] = { 'd', 'a', 't', 'a' };
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76 fwrite(data2, 1, 4, m_file);
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77
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78 m_posSize = ftell(m_file);
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79 // write 0 for data chunk size. Filled out during Close()
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80 utilPutDword(data, 0);
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81 fwrite(data, 1, 4, m_file);
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82 }
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83
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84 void WavWriter::AddSound(const u8 *data, int len)
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85 {
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86 if (m_file == NULL)
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87 return;
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88 // write a block of sound data
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89 fwrite(data, 1, len, m_file);
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90 m_len += len;
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91 }
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92
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