latest SDK

foobar2000/helpers/fb2k_wfx.h

@@ -0,0 +1,38 @@
+#pragma once
+
+struct fb2k_wfx {
+	audio_chunk::spec_t spec;
+	bool bFloat;
+	unsigned bps;
+	void parse( const WAVEFORMATEX * wfx ) {
+		spec.sampleRate = wfx->nSamplesPerSec;
+		spec.chanCount = wfx->nChannels;
+		spec.chanMask = audio_chunk::g_guess_channel_config( spec.chanCount );
+		bps = wfx->wBitsPerSample;
+		switch( wfx->wFormatTag ) {
+		case WAVE_FORMAT_PCM:
+			bFloat = false; break;
+		case WAVE_FORMAT_IEEE_FLOAT:
+			bFloat = true; break;
+		case WAVE_FORMAT_EXTENSIBLE:
+		{
+			auto wfxe = (const WAVEFORMATEXTENSIBLE*) wfx;
+			auto newMask = audio_chunk::g_channel_config_from_wfx( wfxe->dwChannelMask );
+			if ( audio_chunk::g_count_channels(newMask) == spec.chanCount ) {
+				spec.chanMask = newMask;
+			}
+			if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT ) {
+				bFloat = true;
+			} else if ( wfxe->SubFormat == KSDATAFORMAT_SUBTYPE_PCM ) {
+				bFloat = false;
+			} else {
+				throw exception_io_data();
+			}
+		}
+		break;
+		default:
+			throw exception_io_data();
+		}
+
+	}
+};