From ff6c04a6bb5c60ac7187a388092eb615cf98e65e Mon Sep 17 00:00:00 2001
From: "SND\\shalma_cp" <SND\shalma_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97>
Date: Fri, 5 Nov 2010 01:26:34 +0000
Subject: mdec.c - Turn off MDEC1_BUSY idea - experimental: not in use

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@59191 e17a0e51-4ae3-4d35-97c3-1a29b211df97
---
 libpcsxcore/mdec.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

(limited to 'libpcsxcore')

diff --git a/libpcsxcore/mdec.c b/libpcsxcore/mdec.c
index 28a03fb5..2f4c565e 100644
--- a/libpcsxcore/mdec.c
+++ b/libpcsxcore/mdec.c
@@ -607,7 +607,54 @@ void mdec1Interrupt() {
 //		MDECOUTDMA_INT(psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle * 8);
 
 		HW_DMA1_CHCR &= SWAP32(~0x01000000);
-		DMA_INTERRUPT(1);
+		DMA_INTERRUPT(1);
+
+
+#if 0
+		/*
+		Destruction Derby Raw: stall 4+ blocks
+		- Fixes boot movies
+
+		Final Fantasy 9: stall 4+ blocks
+		- Prevent Dali video from infinite stall, corruption
+
+		Rebel Assault 2: stall 8+ blocks
+		- Fixes boot movies, stage 6 play
+		*/
+
+		{
+			int blk[DSIZE2 * 6];
+			int lcv, size;
+			u16 *img;
+
+
+#define PRECACHE_STALL 8
+
+			img = mdec.rl;
+			size = mdec.rlsize * 4;
+			for( lcv = 0; lcv < PRECACHE_STALL; lcv++ ) {
+				u8 *old_img;
+
+				old_img = (u8 *) img;
+				img = rl2blk(blk, img);
+
+				size -= (u8 *) img - old_img;
+				if( size < 0 ) break;
+			}
+
+			// pre-cache input stall - turn off mdec
+			if( size < 0 )
+			{
+	#ifdef CDR_LOG
+			CDR_LOG( "BUSY STALL %X [IN = %X, SIZE = %X]\n",
+				lcv, ((u8 *)img - (u8 *)mdec.rl)/4, mdec.rlsize );
+	#endif
+
+				// drain input + wait before timing out
+				MDECOUTDMA_INT( (PRECACHE_STALL * 1) * (16 * 16 * 3) );
+			}
+		}
+#endif
 	} else {
 		mdec.reg1 &= ~MDEC1_BUSY;
 	}
-- 
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