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1
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1 #pragma once
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2
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3 struct fb2k_wfx {
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4 audio_chunk::spec_t spec;
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5 bool bFloat;
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6 unsigned bps;
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7 void parse( const WAVEFORMATEX * wfx ) {
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8 spec.sampleRate = wfx->nSamplesPerSec;
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9 spec.chanCount = wfx->nChannels;
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10 spec.chanMask = audio_chunk::g_guess_channel_config( spec.chanCount );
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11 bps = wfx->wBitsPerSample;
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12 switch( wfx->wFormatTag ) {
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13 case WAVE_FORMAT_PCM:
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14 bFloat = false; break;
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15 case WAVE_FORMAT_IEEE_FLOAT:
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16 bFloat = true; break;
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17 case WAVE_FORMAT_EXTENSIBLE:
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18 {
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19 auto wfxe = (const WAVEFORMATEXTENSIBLE*) wfx;
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20 auto newMask = audio_chunk::g_channel_config_from_wfx( wfxe->dwChannelMask );
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21 if ( audio_chunk::g_count_channels(newMask) == spec.chanCount ) {
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22 spec.chanMask = newMask;
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23 }
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24 if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT ) {
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25 bFloat = true;
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26 } else if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_PCM ) {
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27 bFloat = false;
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28 } else {
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29 throw exception_io_data();
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30 }
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31 }
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32 break;
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33 default:
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34 throw exception_io_data();
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35 }
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36
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37 }
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38 }; |
