From 4d83eef351cd4b3bfeb766bace3d7cb5b07a2e07 Mon Sep 17 00:00:00 2001
From: Kari Salminen
Date: Wed, 15 Aug 2007 15:55:38 +0000
Subject: Made AGI's 4-channel PCjr sound not need structure packing pragmas
 anymore. Also added more use of little endian reading macros.

svn-id: r28624
---
 engines/agi/sound.h | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

(limited to 'engines/agi/sound.h')

diff --git a/engines/agi/sound.h b/engines/agi/sound.h
index b2201a3f67..6d7e71ef8e 100644
--- a/engines/agi/sound.h
+++ b/engines/agi/sound.h
@@ -177,21 +177,25 @@ struct IIgsSampleHeader {
 	bool finalize(Common::SeekableReadStream &uint8Wave);
 };
 
-#include "common/pack-start.h"
-
 /**
  * AGI sound note structure.
  */
 struct AgiNote {
-	uint8 durLo;		/**< LSB of note duration */
-	uint8 durHi;			/**< MSB of note duration */
-	uint8 frq0;			/**< LSB of note frequency */
-	uint8 frq1;			/**< MSB of note frequency */
-	uint8 vol;			/**< note volume */
+	uint16 duration;    ///< Note duration
+	uint16 freqDiv;     ///< Note frequency divisor (10-bit)
+	uint8  attenuation; ///< Note volume attenuation (4-bit)
+
+	/** Reads an AgiNote through the given pointer. */
+	void read(uint8 *ptr) {
+		duration = READ_LE_UINT16(ptr);
+		uint16 freqByte0 = *(ptr + 2); // Bits 4-9 of the frequency divisor
+		uint16 freqByte1 = *(ptr + 3); // Bits 0-3 of the frequency divisor
+		// Merge the frequency divisor's bits together into a single variable
+		freqDiv = ((freqByte0 & 0x3F) << 4) | (freqByte1 & 0x0F);
+		attenuation = *(ptr + 4) & 0x0F;
+	}
 };
 
-#include "common/pack-end.h"
-
 /**
  * AGI engine sound channel structure.
  */
@@ -200,7 +204,7 @@ struct ChannelInfo {
 #define AGI_SOUND_MIDI		0x0002
 #define AGI_SOUND_4CHN		0x0008
 	uint32 type;
-	struct AgiNote *ptr;
+	uint8 *ptr; // Pointer to the AgiNote data
 	int16 *ins;
 	int32 size;
 	uint32 phase;
-- 
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