audio_format: DSD_OVER_USB is padded to 32 bit

For simplicity, pad the dCS samples to 32 bit. Packed 24 bit samples are rarely used. This patch does not include a real code change, because there is no user of DSD_OVER_USB yet.

audio_format: DSD_OVER_USB is padded to 32 bit
55708b39 · Max Kellermann · 8c5ebdff · 55708b39
Commit 55708b39 authored Mar 21, 2012 by Max Kellermann
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audio_format.h src/audio_format.h +3 -3

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--- a/src/audio_format.h
+++ b/src/audio_format.h
@@ -57,8 +57,8 @@ enum sample_format {
 	SAMPLE_FORMAT_DSD,

 	/**
-	 * DSD packed in 24 bit samples (no padding), according to the
-	 * dCS suggested standard:
+	 * DSD packed in 24 bit samples (padded to 32 bit), according
+	 * to the dCS suggested standard:
 	 * http://www.dcsltd.co.uk/page/assets/DSDoverUSB.pdf
 	 */
 	SAMPLE_FORMAT_DSD_OVER_USB,
@@ -249,12 +249,12 @@ sample_format_size(enum sample_format format)
 		return 2;

 	case SAMPLE_FORMAT_S24:
-	case SAMPLE_FORMAT_DSD_OVER_USB:
 		return 3;

 	case SAMPLE_FORMAT_S24_P32:
 	case SAMPLE_FORMAT_S32:
 	case SAMPLE_FORMAT_FLOAT:
+	case SAMPLE_FORMAT_DSD_OVER_USB:
 		return 4;

 	case SAMPLE_FORMAT_DSD: