/*
[
[DESCRIPTION]
Writes out the contents of a record buffer to a file.
[PARAMETERS]
[RETURN_VALUE]
void
[REMARKS]
]
*/
void WriteWavHeader(FILE *fp, FMOD::Sound *sound, int length)
{
int channels, bits;
float rate;
FMOD_SOUND_FORMAT format;
if (!sound)
{
return;
}
fseek(fp, 0, SEEK_SET);
sound->getFormat (0, &format, &channels, &bits);
sound->getDefaults(&rate, 0, 0, 0);
{
/*
WAV Structures
*/
typedef struct
{
signed char id[4];
int size;
} RiffChunk;
struct
{
RiffChunk chunk __PACKED;
unsigned short wFormatTag __PACKED; /* format type */
unsigned short nChannels __PACKED; /* number of channels (i.e. mono, stereo...) */
unsigned int nSamplesPerSec __PACKED; /* sample rate */
unsigned int nAvgBytesPerSec __PACKED; /* for buffer estimation */
unsigned short nBlockAlign __PACKED; /* block size of data */
unsigned short wBitsPerSample __PACKED; /* number of bits per sample of mono data */
} __PACKED FmtChunk = { {{'f','m','t',' '}, sizeof(FmtChunk) - sizeof(RiffChunk) }, 1, channels, (int)rate, (int)rate * channels * bits / 8, 1 * channels * bits / 8, bits };
if (format == FMOD_SOUND_FORMAT_PCMFLOAT)
{
FmtChunk.wFormatTag = 3;
}
struct
{
RiffChunk chunk;
} DataChunk = { {{'d','a','t','a'}, length } };
struct
{
RiffChunk chunk;
signed char rifftype[4];
} WavHeader = { {{'R','I','F','F'}, sizeof(FmtChunk) + sizeof(RiffChunk) + length }, {'W','A','V','E'} };
#ifdef __BIG_ENDIAN__
/*
Do some endian swapping
*/
FmtChunk.chunk.size = SWAPENDIAN_DWORD(FmtChunk.chunk.size);
FmtChunk.wFormatTag = SWAPENDIAN_WORD(FmtChunk.wFormatTag);
FmtChunk.nChannels = SWAPENDIAN_WORD(FmtChunk.nChannels);
FmtChunk.nSamplesPerSec = SWAPENDIAN_DWORD(FmtChunk.nSamplesPerSec);
FmtChunk.nAvgBytesPerSec = SWAPENDIAN_DWORD(FmtChunk.nAvgBytesPerSec);
FmtChunk.nBlockAlign = SWAPENDIAN_WORD(FmtChunk.nBlockAlign);
FmtChunk.wBitsPerSample = SWAPENDIAN_WORD(FmtChunk.wBitsPerSample);
DataChunk.chunk.size = SWAPENDIAN_DWORD(DataChunk.chunk.size);
WavHeader.chunk.size = SWAPENDIAN_DWORD(WavHeader.chunk.size);
#endif
/*
Write out the WAV header.
*/
fwrite(&WavHeader, sizeof(WavHeader), 1, fp);
fwrite(&FmtChunk, sizeof(FmtChunk), 1, fp);
fwrite(&DataChunk, sizeof(DataChunk), 1, fp);
}
}
/*
[
[DESCRIPTION]
Writes out the contents of a record buffer to a file.
[PARAMETERS]
[RETURN_VALUE]
void
[REMARKS]
]
*/
void SaveToWav(FMOD_SOUND *sound)
{
FILE *fp;
int channels, bits;
float rate;
void *ptr1, *ptr2;
unsigned int lenbytes, len1, len2;
FMOD_SOUND_FORMAT format;
int count = 0;
if (!sound)
{
return;
}
FMOD_Sound_GetFormat (sound, 0, &format, &channels, &bits);
FMOD_Sound_GetDefaults(sound, &rate, 0, 0, 0);
FMOD_Sound_GetLength (sound, &lenbytes, FMOD_TIMEUNIT_PCMBYTES);
{
/*
WAV Structures
*/
typedef struct
{
signed char id[4];
int size;
} RiffChunk;
struct
{
RiffChunk chunk __PACKED;
unsigned short wFormatTag __PACKED; /* format type */
unsigned short nChannels __PACKED; /* number of channels (i.e. mono, stereo...) */
unsigned int nSamplesPerSec __PACKED; /* sample rate */
unsigned int nAvgBytesPerSec __PACKED; /* for buffer estimation */
unsigned short nBlockAlign __PACKED; /* block size of data */
unsigned short wBitsPerSample __PACKED; /* number of bits per sample of mono data */
} __PACKED FmtChunk = { {{'f','m','t',' '}, sizeof(FmtChunk) - sizeof(RiffChunk) }, 1, channels, (int)rate, (int)rate * channels * bits / 8, 1 * channels * bits / 8, bits };
if (format == FMOD_SOUND_FORMAT_PCMFLOAT)
{
FmtChunk.wFormatTag = 3;
}
struct
{
RiffChunk chunk;
} DataChunk = { {{'d','a','t','a'}, lenbytes } };
struct
{
RiffChunk chunk;
signed char rifftype[4];
} WavHeader = { {{'R','I','F','F'}, sizeof(FmtChunk) + sizeof(RiffChunk) + lenbytes }, {'W','A','V','E'} };
#ifdef __BIG_ENDIAN__
/*
Do some endian swapping
*/
FmtChunk.chunk.size = SWAPENDIAN_DWORD(FmtChunk.chunk.size);
FmtChunk.wFormatTag = SWAPENDIAN_WORD(FmtChunk.wFormatTag);
FmtChunk.nChannels = SWAPENDIAN_WORD(FmtChunk.nChannels);
FmtChunk.nSamplesPerSec = SWAPENDIAN_DWORD(FmtChunk.nSamplesPerSec);
FmtChunk.nAvgBytesPerSec = SWAPENDIAN_DWORD(FmtChunk.nAvgBytesPerSec);
FmtChunk.nBlockAlign = SWAPENDIAN_WORD(FmtChunk.nBlockAlign);
FmtChunk.wBitsPerSample = SWAPENDIAN_WORD(FmtChunk.wBitsPerSample);
DataChunk.chunk.size = SWAPENDIAN_DWORD(DataChunk.chunk.size);
WavHeader.chunk.size = SWAPENDIAN_DWORD(WavHeader.chunk.size);
#endif
fp = fopen("record.wav", "wb");
/*
Write out the WAV header.
*/
fwrite(&WavHeader, sizeof(WavHeader), 1, fp);
fwrite(&FmtChunk, sizeof(FmtChunk), 1, fp);
fwrite(&DataChunk, sizeof(DataChunk), 1, fp);
/*
Lock the sound to get access to the raw data.
*/
FMOD_Sound_Lock(sound, 0, lenbytes, &ptr1, &ptr2, &len1, &len2);
#ifdef __BIG_ENDIAN__
/*
Write it to disk.
*/
if (format == FMOD_SOUND_FORMAT_PCM16)
{
signed short *wptr = (signed short *)ptr1;
for (count = 0; count < len1 >> 1; count++)
{
wptr[count] = SWAPENDIAN_WORD(wptr[count]);
}
}
else if (format == FMOD_SOUND_FORMAT_PCMFLOAT)
{
float *fptr = (float *)ptr1;
for (count = 0; count < len1 >> 2; count++)
{
SWAPENDIAN_FLOAT(fptr[count]);
}
}
#endif
fwrite(ptr1, len1, 1, fp);
/*
Unlock the sound to allow FMOD to use it again.
*/
FMOD_Sound_Unlock(sound, ptr1, ptr2, len1, len2);
fclose(fp);
}
}
