From 25c86c49362d30925bfc0f6cf488cec672b99572 Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Tue, 9 Nov 2021 18:05:25 +1000
Subject: [PATCH] Decompile func00043ef8

---
 src/include/lib/lib_3e8c0.h |   3 +-
 src/include/lib/lib_461c0.h |   2 +-
 src/include/types.h         |  29 ++-
 src/lib/lib_43dd0.c         | 460 +++++++++---------------------------
 4 files changed, 143 insertions(+), 351 deletions(-)

diff --git a/src/include/lib/lib_3e8c0.h b/src/include/lib/lib_3e8c0.h
index 0e15ca9ad..223fd19e4 100644
--- a/src/include/lib/lib_3e8c0.h
+++ b/src/include/lib/lib_3e8c0.h
@@ -38,7 +38,6 @@ extern const u32 var70056ec0[];
 extern const u32 var700576c8[];
 extern const u32 var70057750[];
 
-u32 n_alEnvmixerPull(void);
 u32 func0003f8a0(void);
 u32 func00040164(void);
 u32 func00040dac(void);
@@ -46,5 +45,7 @@ u32 func00041600(void);
 u32 func00042238(void);
 u32 func000427d8(void);
 u32 func00042990(void);
+bool func00042e38(struct asistream *stream);
+bool func0004371c(struct asistream *stream);
 
 #endif
diff --git a/src/include/lib/lib_461c0.h b/src/include/lib/lib_461c0.h
index 789f090f4..4bff53b1d 100644
--- a/src/include/lib/lib_461c0.h
+++ b/src/include/lib/lib_461c0.h
@@ -6,7 +6,7 @@
 
 u32 func000461c0(void);
 u32 func00046290(void);
-u32 func000462c4(void);
+s32 func000462c4(void *arg0, void *arg1, s32 arg2);
 u32 func000462f8(void);
 u32 func000464a8(void);
 
diff --git a/src/include/types.h b/src/include/types.h
index b0be5e084..6a8c45607 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -7372,10 +7372,33 @@ struct asistream {
 	u8 unk1c[0x2000];
 	s32 unk201c;
 	s32 unk2020;
-	u8 unk2024[0x4c];
+	u8 unk2024[0x40];
+	u32 unk2064;
+	u32 unk2068;
+	u32 unk206c;
 	struct mp3thing unk2070[6];
 	s32 unk3ba0;
-	u8 unk3ba4[0x3e4];
+	u32 unk3ba4;
+	u32 unk3ba8;
+	u32 unk3bac;
+	u32 unk3bb0;
+	u32 unk3bb4;
+	u32 unk3bb8;
+	u32 unk3bbc;
+	u32 unk3bc0;
+	u32 unk3bc4;
+	u32 unk3bc8;
+	u32 unk3bcc;
+	u32 unk3bd0;
+	u32 unk3bd4;
+	u32 unk3bd8;
+	u32 unk3bdc;
+	u32 unk3be0;
+	u32 unk3be4;
+	u32 unk3be8;
+	u32 unk3bec;
+	u32 unk3bf0;
+	u8 unk3bf4[0x394];
 	s32 unk3f88;
 	u32 unk3f8c;
 	u8 unk3f90[0x2ad4];
@@ -7383,7 +7406,7 @@ struct asistream {
 	u8 unk7364[0x1110];
 	s32 unk8474;
 	bool (*unk8478)(struct asistream *stream);
-	u32 unk847c;
+	bool (*unk847c)(struct asistream *stream);
 };
 
 #endif
diff --git a/src/lib/lib_43dd0.c b/src/lib/lib_43dd0.c
index e26f53a83..727ff0540 100644
--- a/src/lib/lib_43dd0.c
+++ b/src/lib/lib_43dd0.c
@@ -1,6 +1,7 @@
 #include <ultra64.h>
 #include "constants.h"
 #include "bss.h"
+#include "lib/lib_3e8c0.h"
 #include "lib/lib_43dd0.h"
 #include "lib/lib_461c0.h"
 #include "data.h"
@@ -38,352 +39,119 @@ s32 func00043dd0(struct asistream *stream)
 	return stream->unk201c - stream->unk3f88;
 }
 
-GLOBAL_ASM(
-glabel func00043ef8
-/*    43ef8:	27bdffd8 */ 	addiu	$sp,$sp,-40
-/*    43efc:	afbf0014 */ 	sw	$ra,0x14($sp)
-/*    43f00:	afa40028 */ 	sw	$a0,0x28($sp)
-/*    43f04:	afa5002c */ 	sw	$a1,0x2c($sp)
-/*    43f08:	8fae002c */ 	lw	$t6,0x2c($sp)
-/*    43f0c:	2401ffff */ 	addiu	$at,$zero,-1
-/*    43f10:	11c10004 */ 	beq	$t6,$at,.L00043f24
-/*    43f14:	00000000 */ 	nop
-/*    43f18:	8faf002c */ 	lw	$t7,0x2c($sp)
-/*    43f1c:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    43f20:	af0f0018 */ 	sw	$t7,0x18($t8)
-.L00043f24:
-/*    43f24:	8fb9002c */ 	lw	$t9,0x2c($sp)
-/*    43f28:	afb90024 */ 	sw	$t9,0x24($sp)
-/*    43f2c:	afa00020 */ 	sw	$zero,0x20($sp)
-/*    43f30:	240800ff */ 	addiu	$t0,$zero,0xff
-/*    43f34:	a3a8001b */ 	sb	$t0,0x1b($sp)
-.L00043f38:
-/*    43f38:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    43f3c:	8faa0020 */ 	lw	$t2,0x20($sp)
-/*    43f40:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    43f44:	8d390004 */ 	lw	$t9,0x4($t1)
-/*    43f48:	012a2821 */ 	addu	$a1,$t1,$t2
-/*    43f4c:	24a52024 */ 	addiu	$a1,$a1,0x2024
-/*    43f50:	8fa70024 */ 	lw	$a3,0x24($sp)
-/*    43f54:	0320f809 */ 	jalr	$t9
-/*    43f58:	8d240000 */ 	lw	$a0,0x0($t1)
-/*    43f5c:	afa2001c */ 	sw	$v0,0x1c($sp)
-/*    43f60:	8fab001c */ 	lw	$t3,0x1c($sp)
-/*    43f64:	1d600003 */ 	bgtz	$t3,.L00043f74
-/*    43f68:	00000000 */ 	nop
-/*    43f6c:	10000121 */ 	b	.L000443f4
-/*    43f70:	00001025 */ 	or	$v0,$zero,$zero
-.L00043f74:
-/*    43f74:	240cffff */ 	addiu	$t4,$zero,-1
-/*    43f78:	afac0024 */ 	sw	$t4,0x24($sp)
-/*    43f7c:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    43f80:	8dae0018 */ 	lw	$t6,0x18($t5)
-/*    43f84:	25cf0001 */ 	addiu	$t7,$t6,0x1
-/*    43f88:	adaf0018 */ 	sw	$t7,0x18($t5)
-/*    43f8c:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    43f90:	8fa80020 */ 	lw	$t0,0x20($sp)
-/*    43f94:	93b9001b */ 	lbu	$t9,0x1b($sp)
-/*    43f98:	03085021 */ 	addu	$t2,$t8,$t0
-/*    43f9c:	91492024 */ 	lbu	$t1,0x2024($t2)
-/*    43fa0:	01395824 */ 	and	$t3,$t1,$t9
-/*    43fa4:	11790006 */ 	beq	$t3,$t9,.L00043fc0
-/*    43fa8:	00000000 */ 	nop
-/*    43fac:	240c00ff */ 	addiu	$t4,$zero,0xff
-/*    43fb0:	a3ac001b */ 	sb	$t4,0x1b($sp)
-/*    43fb4:	afa00020 */ 	sw	$zero,0x20($sp)
-/*    43fb8:	1000000c */ 	b	.L00043fec
-/*    43fbc:	00000000 */ 	nop
-.L00043fc0:
-/*    43fc0:	8fae0020 */ 	lw	$t6,0x20($sp)
-/*    43fc4:	25cf0001 */ 	addiu	$t7,$t6,0x1
-/*    43fc8:	afaf0020 */ 	sw	$t7,0x20($sp)
-/*    43fcc:	93ad001b */ 	lbu	$t5,0x1b($sp)
-/*    43fd0:	240100f0 */ 	addiu	$at,$zero,0xf0
-/*    43fd4:	15a10003 */ 	bne	$t5,$at,.L00043fe4
-/*    43fd8:	00000000 */ 	nop
-/*    43fdc:	10000005 */ 	b	.L00043ff4
-/*    43fe0:	00000000 */ 	nop
-.L00043fe4:
-/*    43fe4:	241800f0 */ 	addiu	$t8,$zero,0xf0
-/*    43fe8:	a3b8001b */ 	sb	$t8,0x1b($sp)
-.L00043fec:
-/*    43fec:	1000ffd2 */ 	b	.L00043f38
-/*    43ff0:	00000000 */ 	nop
-.L00043ff4:
-/*    43ff4:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    43ff8:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    43ffc:	2407ffff */ 	addiu	$a3,$zero,-1
-/*    44000:	8d190004 */ 	lw	$t9,0x4($t0)
-/*    44004:	8d040000 */ 	lw	$a0,0x0($t0)
-/*    44008:	25052026 */ 	addiu	$a1,$t0,0x2026
-/*    4400c:	0320f809 */ 	jalr	$t9
-/*    44010:	00000000 */ 	nop
-/*    44014:	afa2001c */ 	sw	$v0,0x1c($sp)
-/*    44018:	8faa001c */ 	lw	$t2,0x1c($sp)
-/*    4401c:	1d400003 */ 	bgtz	$t2,.L0004402c
-/*    44020:	00000000 */ 	nop
-/*    44024:	100000f3 */ 	b	.L000443f4
-/*    44028:	00001025 */ 	or	$v0,$zero,$zero
-.L0004402c:
-/*    4402c:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    44030:	8d2b0018 */ 	lw	$t3,0x18($t1)
-/*    44034:	256c0002 */ 	addiu	$t4,$t3,0x2
-/*    44038:	ad2c0018 */ 	sw	$t4,0x18($t1)
-/*    4403c:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    44040:	240e000c */ 	addiu	$t6,$zero,0xc
-/*    44044:	adee2064 */ 	sw	$t6,0x2064($t7)
-/*    44048:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    4404c:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    44050:	25a42024 */ 	addiu	$a0,$t5,0x2024
-/*    44054:	0c0118b1 */ 	jal	func000462c4
-/*    44058:	25a52064 */ 	addiu	$a1,$t5,0x2064
-/*    4405c:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    44060:	af023ba4 */ 	sw	$v0,0x3ba4($t8)
-/*    44064:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    44068:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    4406c:	25042024 */ 	addiu	$a0,$t0,0x2024
-/*    44070:	0c0118b1 */ 	jal	func000462c4
-/*    44074:	25052064 */ 	addiu	$a1,$t0,0x2064
-/*    44078:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    4407c:	af223ba8 */ 	sw	$v0,0x3ba8($t9)
-/*    44080:	8faa0028 */ 	lw	$t2,0x28($sp)
-/*    44084:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    44088:	25442024 */ 	addiu	$a0,$t2,0x2024
-/*    4408c:	0c0118b1 */ 	jal	func000462c4
-/*    44090:	25452064 */ 	addiu	$a1,$t2,0x2064
-/*    44094:	8fab0028 */ 	lw	$t3,0x28($sp)
-/*    44098:	ad623bac */ 	sw	$v0,0x3bac($t3)
-/*    4409c:	8fac0028 */ 	lw	$t4,0x28($sp)
-/*    440a0:	24060004 */ 	addiu	$a2,$zero,0x4
-/*    440a4:	25842024 */ 	addiu	$a0,$t4,0x2024
-/*    440a8:	0c0118b1 */ 	jal	func000462c4
-/*    440ac:	25852064 */ 	addiu	$a1,$t4,0x2064
-/*    440b0:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    440b4:	ad223bb0 */ 	sw	$v0,0x3bb0($t1)
-/*    440b8:	8fae0028 */ 	lw	$t6,0x28($sp)
-/*    440bc:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    440c0:	25c42024 */ 	addiu	$a0,$t6,0x2024
-/*    440c4:	0c0118b1 */ 	jal	func000462c4
-/*    440c8:	25c52064 */ 	addiu	$a1,$t6,0x2064
-/*    440cc:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    440d0:	ade23bb4 */ 	sw	$v0,0x3bb4($t7)
-/*    440d4:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    440d8:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    440dc:	25a42024 */ 	addiu	$a0,$t5,0x2024
-/*    440e0:	0c0118b1 */ 	jal	func000462c4
-/*    440e4:	25a52064 */ 	addiu	$a1,$t5,0x2064
-/*    440e8:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    440ec:	af023bb8 */ 	sw	$v0,0x3bb8($t8)
-/*    440f0:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    440f4:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    440f8:	25042024 */ 	addiu	$a0,$t0,0x2024
-/*    440fc:	0c0118b1 */ 	jal	func000462c4
-/*    44100:	25052064 */ 	addiu	$a1,$t0,0x2064
-/*    44104:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    44108:	af223bbc */ 	sw	$v0,0x3bbc($t9)
-/*    4410c:	8faa0028 */ 	lw	$t2,0x28($sp)
-/*    44110:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    44114:	25442024 */ 	addiu	$a0,$t2,0x2024
-/*    44118:	0c0118b1 */ 	jal	func000462c4
-/*    4411c:	25452064 */ 	addiu	$a1,$t2,0x2064
-/*    44120:	8fab0028 */ 	lw	$t3,0x28($sp)
-/*    44124:	ad623bc0 */ 	sw	$v0,0x3bc0($t3)
-/*    44128:	8fac0028 */ 	lw	$t4,0x28($sp)
-/*    4412c:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    44130:	25842024 */ 	addiu	$a0,$t4,0x2024
-/*    44134:	0c0118b1 */ 	jal	func000462c4
-/*    44138:	25852064 */ 	addiu	$a1,$t4,0x2064
-/*    4413c:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    44140:	ad223bc4 */ 	sw	$v0,0x3bc4($t1)
-/*    44144:	8fae0028 */ 	lw	$t6,0x28($sp)
-/*    44148:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    4414c:	25c42024 */ 	addiu	$a0,$t6,0x2024
-/*    44150:	0c0118b1 */ 	jal	func000462c4
-/*    44154:	25c52064 */ 	addiu	$a1,$t6,0x2064
-/*    44158:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    4415c:	ade23bc8 */ 	sw	$v0,0x3bc8($t7)
-/*    44160:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    44164:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    44168:	25a42024 */ 	addiu	$a0,$t5,0x2024
-/*    4416c:	0c0118b1 */ 	jal	func000462c4
-/*    44170:	25a52064 */ 	addiu	$a1,$t5,0x2064
-/*    44174:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    44178:	af023bcc */ 	sw	$v0,0x3bcc($t8)
-/*    4417c:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    44180:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    44184:	25042024 */ 	addiu	$a0,$t0,0x2024
-/*    44188:	0c0118b1 */ 	jal	func000462c4
-/*    4418c:	25052064 */ 	addiu	$a1,$t0,0x2064
-/*    44190:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    44194:	af223bd0 */ 	sw	$v0,0x3bd0($t9)
-/*    44198:	8faa0028 */ 	lw	$t2,0x28($sp)
-/*    4419c:	2401000f */ 	addiu	$at,$zero,0xf
-/*    441a0:	8d4b3bb0 */ 	lw	$t3,0x3bb0($t2)
-/*    441a4:	11610005 */ 	beq	$t3,$at,.L000441bc
-/*    441a8:	00000000 */ 	nop
-/*    441ac:	8d4c3bb4 */ 	lw	$t4,0x3bb4($t2)
-/*    441b0:	24010003 */ 	addiu	$at,$zero,0x3
-/*    441b4:	15810006 */ 	bne	$t4,$at,.L000441d0
-/*    441b8:	00000000 */ 	nop
-.L000441bc:
-/*    441bc:	8fa40028 */ 	lw	$a0,0x28($sp)
-/*    441c0:	0c010fbe */ 	jal	func00043ef8
-/*    441c4:	2405ffff */ 	addiu	$a1,$zero,-1
-/*    441c8:	1000008a */ 	b	.L000443f4
-/*    441cc:	00000000 */ 	nop
-.L000441d0:
-/*    441d0:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    441d4:	8d2e3bd4 */ 	lw	$t6,0x3bd4($t1)
-/*    441d8:	15c0001a */ 	bnez	$t6,.L00044244
-/*    441dc:	00000000 */ 	nop
-/*    441e0:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    441e4:	240f0001 */ 	addiu	$t7,$zero,0x1
-/*    441e8:	adaf3bd4 */ 	sw	$t7,0x3bd4($t5)
-/*    441ec:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    441f0:	8f083ba4 */ 	lw	$t0,0x3ba4($t8)
-/*    441f4:	af083bd8 */ 	sw	$t0,0x3bd8($t8)
-/*    441f8:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    441fc:	8f2b3ba8 */ 	lw	$t3,0x3ba8($t9)
-/*    44200:	af2b3bdc */ 	sw	$t3,0x3bdc($t9)
-/*    44204:	8faa0028 */ 	lw	$t2,0x28($sp)
-/*    44208:	8d4c3bac */ 	lw	$t4,0x3bac($t2)
-/*    4420c:	ad4c3be0 */ 	sw	$t4,0x3be0($t2)
-/*    44210:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    44214:	8d2e3bb4 */ 	lw	$t6,0x3bb4($t1)
-/*    44218:	ad2e3be4 */ 	sw	$t6,0x3be4($t1)
-/*    4421c:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    44220:	8ded3bc0 */ 	lw	$t5,0x3bc0($t7)
-/*    44224:	aded3be8 */ 	sw	$t5,0x3be8($t7)
-/*    44228:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    4422c:	8d183bc8 */ 	lw	$t8,0x3bc8($t0)
-/*    44230:	ad183bec */ 	sw	$t8,0x3bec($t0)
-/*    44234:	8fab0028 */ 	lw	$t3,0x28($sp)
-/*    44238:	8d793bcc */ 	lw	$t9,0x3bcc($t3)
-/*    4423c:	1000001f */ 	b	.L000442bc
-/*    44240:	ad793bf0 */ 	sw	$t9,0x3bf0($t3)
-.L00044244:
-/*    44244:	8fac0028 */ 	lw	$t4,0x28($sp)
-/*    44248:	8d8a3ba4 */ 	lw	$t2,0x3ba4($t4)
-/*    4424c:	8d8e3bd8 */ 	lw	$t6,0x3bd8($t4)
-/*    44250:	154e0015 */ 	bne	$t2,$t6,.L000442a8
-/*    44254:	00000000 */ 	nop
-/*    44258:	8d893ba8 */ 	lw	$t1,0x3ba8($t4)
-/*    4425c:	8d8d3bdc */ 	lw	$t5,0x3bdc($t4)
-/*    44260:	152d0011 */ 	bne	$t1,$t5,.L000442a8
-/*    44264:	00000000 */ 	nop
-/*    44268:	8d8f3bac */ 	lw	$t7,0x3bac($t4)
-/*    4426c:	8d983be0 */ 	lw	$t8,0x3be0($t4)
-/*    44270:	15f8000d */ 	bne	$t7,$t8,.L000442a8
-/*    44274:	00000000 */ 	nop
-/*    44278:	8d883bb4 */ 	lw	$t0,0x3bb4($t4)
-/*    4427c:	8d993be4 */ 	lw	$t9,0x3be4($t4)
-/*    44280:	15190009 */ 	bne	$t0,$t9,.L000442a8
-/*    44284:	00000000 */ 	nop
-/*    44288:	8d8b3bc0 */ 	lw	$t3,0x3bc0($t4)
-/*    4428c:	8d8a3be8 */ 	lw	$t2,0x3be8($t4)
-/*    44290:	156a0005 */ 	bne	$t3,$t2,.L000442a8
-/*    44294:	00000000 */ 	nop
-/*    44298:	8d8e3bcc */ 	lw	$t6,0x3bcc($t4)
-/*    4429c:	8d893bf0 */ 	lw	$t1,0x3bf0($t4)
-/*    442a0:	11c90006 */ 	beq	$t6,$t1,.L000442bc
-/*    442a4:	00000000 */ 	nop
-.L000442a8:
-/*    442a8:	8fa40028 */ 	lw	$a0,0x28($sp)
-/*    442ac:	0c010fbe */ 	jal	func00043ef8
-/*    442b0:	2405ffff */ 	addiu	$a1,$zero,-1
-/*    442b4:	1000004f */ 	b	.L000443f4
-/*    442b8:	00000000 */ 	nop
-.L000442bc:
-/*    442bc:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    442c0:	240d0004 */ 	addiu	$t5,$zero,0x4
-/*    442c4:	aded2068 */ 	sw	$t5,0x2068($t7)
-/*    442c8:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    442cc:	8f083bac */ 	lw	$t0,0x3bac($t8)
-/*    442d0:	1500001a */ 	bnez	$t0,.L0004433c
-/*    442d4:	00000000 */ 	nop
-/*    442d8:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    442dc:	24060002 */ 	addiu	$a2,$zero,0x2
-/*    442e0:	2407ffff */ 	addiu	$a3,$zero,-1
-/*    442e4:	8f240000 */ 	lw	$a0,0x0($t9)
-/*    442e8:	27252028 */ 	addiu	$a1,$t9,0x2028
-/*    442ec:	8f390004 */ 	lw	$t9,0x4($t9)
-/*    442f0:	0320f809 */ 	jalr	$t9
-/*    442f4:	00000000 */ 	nop
-/*    442f8:	afa2001c */ 	sw	$v0,0x1c($sp)
-/*    442fc:	8fab001c */ 	lw	$t3,0x1c($sp)
-/*    44300:	1d600003 */ 	bgtz	$t3,.L00044310
-/*    44304:	00000000 */ 	nop
-/*    44308:	1000003a */ 	b	.L000443f4
-/*    4430c:	00001025 */ 	or	$v0,$zero,$zero
-.L00044310:
-/*    44310:	8faa0028 */ 	lw	$t2,0x28($sp)
-/*    44314:	8d4c0018 */ 	lw	$t4,0x18($t2)
-/*    44318:	258e0002 */ 	addiu	$t6,$t4,0x2
-/*    4431c:	ad4e0018 */ 	sw	$t6,0x18($t2)
-/*    44320:	8fa90028 */ 	lw	$t1,0x28($sp)
-/*    44324:	8d2d2064 */ 	lw	$t5,0x2064($t1)
-/*    44328:	25af0010 */ 	addiu	$t7,$t5,0x10
-/*    4432c:	ad2f2064 */ 	sw	$t7,0x2064($t1)
-/*    44330:	8fa80028 */ 	lw	$t0,0x28($sp)
-/*    44334:	24180006 */ 	addiu	$t8,$zero,0x6
-/*    44338:	ad182068 */ 	sw	$t8,0x2068($t0)
-.L0004433c:
-/*    4433c:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    44340:	24010001 */ 	addiu	$at,$zero,0x1
-/*    44344:	8f2b3ba8 */ 	lw	$t3,0x3ba8($t9)
-/*    44348:	1561000c */ 	bne	$t3,$at,.L0004437c
-/*    4434c:	00000000 */ 	nop
-/*    44350:	8fae0028 */ 	lw	$t6,0x28($sp)
-/*    44354:	3c0c7004 */ 	lui	$t4,%hi(func0004371c)
-/*    44358:	258c371c */ 	addiu	$t4,$t4,%lo(func0004371c)
-/*    4435c:	25c17fff */ 	addiu	$at,$t6,0x7fff
-/*    44360:	ac2c0479 */ 	sw	$t4,0x479($at)
-/*    44364:	8fad0028 */ 	lw	$t5,0x28($sp)
-/*    44368:	3c0a7004 */ 	lui	$t2,%hi(func00042e38)
-/*    4436c:	254a2e38 */ 	addiu	$t2,$t2,%lo(func00042e38)
-/*    44370:	25a17fff */ 	addiu	$at,$t5,0x7fff
-/*    44374:	10000011 */ 	b	.L000443bc
-/*    44378:	ac2a047d */ 	sw	$t2,0x47d($at)
-.L0004437c:
-/*    4437c:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    44380:	24010002 */ 	addiu	$at,$zero,0x2
-/*    44384:	8de93ba8 */ 	lw	$t1,0x3ba8($t7)
-/*    44388:	15210005 */ 	bne	$t1,$at,.L000443a0
-/*    4438c:	00000000 */ 	nop
-/*    44390:	10000018 */ 	b	.L000443f4
-/*    44394:	00001025 */ 	or	$v0,$zero,$zero
-/*    44398:	10000008 */ 	b	.L000443bc
-/*    4439c:	00000000 */ 	nop
-.L000443a0:
-/*    443a0:	8fb80028 */ 	lw	$t8,0x28($sp)
-/*    443a4:	24010003 */ 	addiu	$at,$zero,0x3
-/*    443a8:	8f083ba8 */ 	lw	$t0,0x3ba8($t8)
-/*    443ac:	15010003 */ 	bne	$t0,$at,.L000443bc
-/*    443b0:	00000000 */ 	nop
-/*    443b4:	1000000f */ 	b	.L000443f4
-/*    443b8:	00001025 */ 	or	$v0,$zero,$zero
-.L000443bc:
-/*    443bc:	8fb90028 */ 	lw	$t9,0x28($sp)
-/*    443c0:	03202025 */ 	or	$a0,$t9,$zero
-/*    443c4:	27217fff */ 	addiu	$at,$t9,0x7fff
-/*    443c8:	8c39047d */ 	lw	$t9,0x47d($at)
-/*    443cc:	0320f809 */ 	jalr	$t9
-/*    443d0:	00000000 */ 	nop
-/*    443d4:	14400003 */ 	bnez	$v0,.L000443e4
-/*    443d8:	00000000 */ 	nop
-/*    443dc:	10000005 */ 	b	.L000443f4
-/*    443e0:	00001025 */ 	or	$v0,$zero,$zero
-.L000443e4:
-/*    443e4:	10000003 */ 	b	.L000443f4
-/*    443e8:	24020001 */ 	addiu	$v0,$zero,0x1
-/*    443ec:	10000001 */ 	b	.L000443f4
-/*    443f0:	00000000 */ 	nop
-.L000443f4:
-/*    443f4:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*    443f8:	27bd0028 */ 	addiu	$sp,$sp,0x28
-/*    443fc:	03e00008 */ 	jr	$ra
-/*    44400:	00000000 */ 	nop
-);
+bool func00043ef8(struct asistream *stream, s32 arg1)
+{
+	s32 sp24;
+	s32 sp20;
+	s32 sp1c;
+	u8 mask;
+
+	if (arg1 != -1) {
+		stream->unk18 = arg1;
+	}
+
+	sp24 = arg1;
+	sp20 = 0;
+	mask = 0xff;
+
+	while (true) {
+		sp1c = stream->unk04(stream->unk00, &stream->unk2024[sp20], 1, sp24);
+
+		if (sp1c < 1) {
+			return 0;
+		}
+
+		sp24 = -1;
+		stream->unk18++;
+
+		if ((stream->unk2024[sp20] & mask) != mask) {
+			mask = 0xff;
+			sp20 = 0;
+			continue;
+		}
+
+		sp20++;
+
+		if (mask == 0xf0) {
+			break;
+		}
+
+		mask = 0xf0;
+	}
+
+	sp1c = stream->unk04(stream->unk00, &stream->unk2024[2], 2, -1);
+
+	if (sp1c <= 0) {
+		return 0;
+	}
+
+	stream->unk18 += 2;
+	stream->unk2064 = 12;
+
+	stream->unk3ba4 = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3ba8 = func000462c4(&stream->unk2024, &stream->unk2064, 2);
+	stream->unk3bac = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3bb0 = func000462c4(&stream->unk2024, &stream->unk2064, 4);
+	stream->unk3bb4 = func000462c4(&stream->unk2024, &stream->unk2064, 2);
+	stream->unk3bb8 = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3bbc = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3bc0 = func000462c4(&stream->unk2024, &stream->unk2064, 2);
+	stream->unk3bc4 = func000462c4(&stream->unk2024, &stream->unk2064, 2);
+	stream->unk3bc8 = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3bcc = func000462c4(&stream->unk2024, &stream->unk2064, 1);
+	stream->unk3bd0 = func000462c4(&stream->unk2024, &stream->unk2064, 2);
+
+	if (stream->unk3bb0 == 15 || stream->unk3bb4 == 3) {
+		return func00043ef8(stream, -1);
+	}
+
+	if (stream->unk3bd4 == 0) {
+		stream->unk3bd4 = 1;
+		stream->unk3bd8 = stream->unk3ba4;
+		stream->unk3bdc = stream->unk3ba8;
+		stream->unk3be0 = stream->unk3bac;
+		stream->unk3be4 = stream->unk3bb4;
+		stream->unk3be8 = stream->unk3bc0;
+		stream->unk3bec = stream->unk3bc8;
+		stream->unk3bf0 = stream->unk3bcc;
+	} else if (stream->unk3ba4 != stream->unk3bd8
+			|| stream->unk3ba8 != stream->unk3bdc
+			|| stream->unk3bac != stream->unk3be0
+			|| stream->unk3bb4 != stream->unk3be4
+			|| stream->unk3bc0 != stream->unk3be8
+			|| stream->unk3bcc != stream->unk3bf0) {
+		return func00043ef8(stream, -1);
+	}
+
+	stream->unk2068 = 4;
+
+	if (stream->unk3bac == 0) {
+		sp1c = stream->unk04(stream->unk00, &stream->unk2024[4], 2, -1);
+
+		if (sp1c < 1) {
+			return 0;
+		}
+
+		stream->unk18 += 2;
+		stream->unk2064 += 16;
+		stream->unk2068 = 6;
+	}
+
+	if (stream->unk3ba8 == 1) {
+		stream->unk8478 = func0004371c;
+		stream->unk847c = func00042e38;
+	} else if (stream->unk3ba8 == 2) {
+		return 0;
+	} else if (stream->unk3ba8 == 3) {
+		return 0;
+	}
+
+	if (stream->unk847c(stream) == 0) {
+		return 0;
+	}
+
+	return 1;
+}
 
 u32 func00044404(void)
 {