38 lines
990 B
C
38 lines
990 B
C
#pragma once
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struct fb2k_wfx {
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audio_chunk::spec_t spec;
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bool bFloat;
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unsigned bps;
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void parse( const WAVEFORMATEX * wfx ) {
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spec.sampleRate = wfx->nSamplesPerSec;
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spec.chanCount = wfx->nChannels;
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spec.chanMask = audio_chunk::g_guess_channel_config( spec.chanCount );
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bps = wfx->wBitsPerSample;
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switch( wfx->wFormatTag ) {
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case WAVE_FORMAT_PCM:
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bFloat = false; break;
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case WAVE_FORMAT_IEEE_FLOAT:
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bFloat = true; break;
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case WAVE_FORMAT_EXTENSIBLE:
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{
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auto wfxe = (const WAVEFORMATEXTENSIBLE*) wfx;
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auto newMask = audio_chunk::g_channel_config_from_wfx( wfxe->dwChannelMask );
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if ( audio_chunk::g_count_channels(newMask) == spec.chanCount ) {
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spec.chanMask = newMask;
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}
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if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT ) {
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bFloat = true;
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} else if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_PCM ) {
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bFloat = false;
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} else {
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throw exception_io_data();
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}
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}
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break;
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default:
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throw exception_io_data();
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}
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}
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}; |