Update internal libmpeg2 copy to version 0.5.1.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27604 b3059339-0415-0410-9bf9-f77b7e298cf2

22 files changed, 421 insertions, 289 deletions

diff --git a/Changelog b/Changelog
index 80226b871d..f67276f635 100644
--- a/Changelog
+++ b/Changelog
@@ -56,6 +56,7 @@ MPlayer (1.0)
     libmpeg2:
     * enable Alpha/ARM optimizations in libmpeg2
     * SSE2-optimized IDCT routines from upstream libmpeg2
+    * libmpeg2 updated to version 0.5.1
 
     Drivers:
     * replace PolypAudio by PulseAudio (-ao pulse)
diff --git a/Copyright b/Copyright
index 3589e06be9..47ae48b2d0 100644
--- a/Copyright
+++ b/Copyright
@@ -61,11 +61,11 @@ Copyright:  1998, 1999 Eric Smith <eric@brouhaha.com>
 License:    GNU General Public License
 
 Name:       libmpeg2
-Version:    0.4.1 + patches
+Version:    0.5.1 + patches
 Homepage:   http://libmpeg2.sourceforge.net/
 Directory:  libmpeg2
 Copyright:  1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
-            2000-2003 Michel Lespinasse <walken@zoy.org>
+            2000-2004 Michel Lespinasse <walken@zoy.org>
             2002-2003 Falk Hueffner <falk@debian.org>
             2003 David S. Miller <davem@redhat.com>
             2003 Regis Duchesne <hpreg@zoy.org>
diff --git a/libmpeg2/alloc.c b/libmpeg2/alloc.c
index 0698937bce..71bc18b692 100644
--- a/libmpeg2/alloc.c
+++ b/libmpeg2/alloc.c
@@ -62,9 +62,9 @@ void mpeg2_free (void * buf)
 	free (*(((void **)buf) - 1));
 }
 
-void mpeg2_malloc_hooks (void * malloc (unsigned, mpeg2_alloc_t),
-			 int free (void *))
+void mpeg2_malloc_hooks (void * alloc_func (unsigned, mpeg2_alloc_t),
+			 int free_func (void *))
 {
-    malloc_hook = malloc;
-    free_hook = free;
+    malloc_hook = alloc_func;
+    free_hook = free_func;
 }
diff --git a/libmpeg2/alpha_asm.h b/libmpeg2/alpha_asm.h
index bf1081f249..1a296301da 100644
--- a/libmpeg2/alpha_asm.h
+++ b/libmpeg2/alpha_asm.h
@@ -20,8 +20,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307	 USA
  */
 
-#ifndef ALPHA_ASM_H
-#define ALPHA_ASM_H
+#ifndef LIBMPEG2_ALPHA_ASM_H
+#define LIBMPEG2_ALPHA_ASM_H
 
 #include <inttypes.h>
 
@@ -178,4 +178,4 @@ struct unaligned_long { uint64_t l; } __attribute__((packed));
 #error "Unknown compiler!"
 #endif
 
-#endif /* ALPHA_ASM_H */
+#endif /* LIBMPEG2_ALPHA_ASM_H */
diff --git a/libmpeg2/attributes.h b/libmpeg2/attributes.h
index eefbc0dd1b..e005eef1c3 100644
--- a/libmpeg2/attributes.h
+++ b/libmpeg2/attributes.h
@@ -21,6 +21,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#ifndef LIBMPEG2_ATTRIBUTES_H
+#define LIBMPEG2_ATTRIBUTES_H
+
 /* use gcc attribs to align critical data structures */
 #ifdef ATTRIBUTE_ALIGNED_MAX
 #define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
@@ -35,3 +38,5 @@
 #define likely(x) (x)
 #define unlikely(x) (x)
 #endif
+
+#endif /* LIBMPEG2_ATTRIBUTES_H */
diff --git a/libmpeg2/cpu_accel.c b/libmpeg2/cpu_accel.c
index 54b57f18a2..104ac2cfdf 100644
--- a/libmpeg2/cpu_accel.c
+++ b/libmpeg2/cpu_accel.c
@@ -1,6 +1,6 @@
 /*
  * cpu_accel.c
- * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2004 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
@@ -26,7 +26,6 @@
  */
 
 #include "config.h"
-#include "cpudetect.h"
 
 #include <inttypes.h>
 
@@ -34,21 +33,26 @@
 #include "attributes.h"
 #include "mpeg2_internal.h"
 
-#ifdef ACCEL_DETECT
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
-
-/* MPlayer imports libmpeg2 as decoder, which detects MMX / 3DNow!
- * instructions via assembly. However, it is regarded as duplicated work
- * in MPlayer, so that we enforce using MPlayer's implementation.
- */
-#define MPLAYER_CPUDETECT
+#include "cpudetect.h"
 
-static inline uint32_t arch_accel (void)
+#if defined(ARCH_X86) || defined(ARCH_X86_64)
+static inline uint32_t arch_accel (uint32_t accel)
 {
-#if !defined(MPLAYER_CPUDETECT)
-    uint32_t eax, ebx, ecx, edx;
-    int AMD;
-    uint32_t caps;
+/* Use MPlayer CPU detection instead of libmpeg2 variant. */
+#if 0
+    if (accel & (MPEG2_ACCEL_X86_3DNOW | MPEG2_ACCEL_X86_MMXEXT))
+	accel |= MPEG2_ACCEL_X86_MMX;
+	
+    if (accel & (MPEG2_ACCEL_X86_SSE2 | MPEG2_ACCEL_X86_SSE3))
+	accel |= MPEG2_ACCEL_X86_MMXEXT;
+	
+    if (accel & (MPEG2_ACCEL_X86_SSE3))
+	accel |= MPEG2_ACCEL_X86_SSE2;
+
+#ifdef ACCEL_DETECT
+    if (accel & MPEG2_ACCEL_DETECT) {
+	uint32_t eax, ebx, ecx, edx;
+	int AMD;
 
 #if defined(__x86_64__) || (!defined(PIC) && !defined(__PIC__))
 #define cpuid(op,eax,ebx,ecx,edx)	\
@@ -59,7 +63,7 @@ static inline uint32_t arch_accel (void)
 	       "=d" (edx)		\
 	     : "a" (op)			\
 	     : "cc")
-#else  /* PIC version : save ebx (not needed on x86_64) */
+#else	/* PIC version : save ebx (not needed on x86_64) */
 #define cpuid(op,eax,ebx,ecx,edx)	\
     __asm__ ("pushl %%ebx\n\t"		\
 	     "cpuid\n\t"		\
@@ -74,70 +78,79 @@ static inline uint32_t arch_accel (void)
 #endif
 
 #ifndef __x86_64__ /* x86_64 supports the cpuid op */
-    __asm__ ("pushf\n\t"
-	     "pushf\n\t"
-	     "pop %0\n\t"
-	     "movl %0,%1\n\t"
-	     "xorl $0x200000,%0\n\t"
-	     "push %0\n\t"
-	     "popf\n\t"
-	     "pushf\n\t"
-	     "pop %0\n\t"
-	     "popf"
-	     : "=r" (eax),
-	       "=r" (ebx)
-	     :
-	     : "cc");
-
-    if (eax == ebx)		/* no cpuid */
-	return 0;
+	__asm__ ("pushf\n\t"
+		 "pushf\n\t"
+		 "pop %0\n\t"
+		 "movl %0,%1\n\t"
+		 "xorl $0x200000,%0\n\t"
+		 "push %0\n\t"
+		 "popf\n\t"
+		 "pushf\n\t"
+		 "pop %0\n\t"
+		 "popf"
+		 : "=r" (eax),
+		 "=r" (ebx)
+		 :
+		 : "cc");
+
+	if (eax == ebx)			/* no cpuid */
+	    return accel;
 #endif
 
-    cpuid (0x00000000, eax, ebx, ecx, edx);
-    if (!eax)			/* vendor string only */
-	return 0;
+	cpuid (0x00000000, eax, ebx, ecx, edx);
+	if (!eax)			/* vendor string only */
+	    return accel;
+
+	AMD = (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65);
 
-    AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65);
+	cpuid (0x00000001, eax, ebx, ecx, edx);
+	if (! (edx & 0x00800000))	/* no MMX */
+	    return accel;
 
-    cpuid (0x00000001, eax, ebx, ecx, edx);
-    if (! (edx & 0x00800000))	/* no MMX */
-	return 0;
+	accel |= MPEG2_ACCEL_X86_MMX;
+	if (edx & 0x02000000)		/* SSE - identical to AMD MMX ext. */
+	    accel |= MPEG2_ACCEL_X86_MMXEXT;
 
-    caps = MPEG2_ACCEL_X86_MMX;
-    if (edx & 0x02000000)	/* SSE - identical to AMD MMX extensions */
-	caps = MPEG2_ACCEL_X86_MMX | MPEG2_ACCEL_X86_MMXEXT;
+	if (edx & 0x04000000)		/* SSE2 */
+	    accel |= MPEG2_ACCEL_X86_SSE2;
 
-    cpuid (0x80000000, eax, ebx, ecx, edx);
-    if (eax < 0x80000001)	/* no extended capabilities */
-	return caps;
+	if (ecx & 0x00000001)		/* SSE3 */
+	    accel |= MPEG2_ACCEL_X86_SSE3;
 
-    cpuid (0x80000001, eax, ebx, ecx, edx);
+	cpuid (0x80000000, eax, ebx, ecx, edx);
+	if (eax < 0x80000001)		/* no extended capabilities */
+	    return accel;
 
-    if (edx & 0x80000000)
-	caps |= MPEG2_ACCEL_X86_3DNOW;
+	cpuid (0x80000001, eax, ebx, ecx, edx);
 
-    if (AMD && (edx & 0x00400000))	/* AMD MMX extensions */
-	caps |= MPEG2_ACCEL_X86_MMXEXT;
+	if (edx & 0x80000000)
+	    accel |= MPEG2_ACCEL_X86_3DNOW;
+
+	if (AMD && (edx & 0x00400000))	/* AMD MMX extensions */
+	    accel |= MPEG2_ACCEL_X86_MMXEXT;
+    }
+#endif /* ACCEL_DETECT */
 
-    return caps;
-#else /* MPLAYER_CPUDETECT: Use MPlayer's CPU capability property. */
-    caps = 0;
+    return accel;
+
+#else /* 0 */
+    accel = 0;
     if (gCpuCaps.hasMMX)
-        caps |= MPEG2_ACCEL_X86_MMX;
+        accel |= MPEG2_ACCEL_X86_MMX;
     if (gCpuCaps.hasSSE2)
-	caps |= MPEG2_ACCEL_X86_SSE2;
+	accel |= MPEG2_ACCEL_X86_SSE2;
     if (gCpuCaps.hasMMX2)
-	caps |= MPEG2_ACCEL_X86_MMXEXT;
+	accel |= MPEG2_ACCEL_X86_MMXEXT;
     if (gCpuCaps.has3DNow)
-	caps |= MPEG2_ACCEL_X86_3DNOW;
+	accel |= MPEG2_ACCEL_X86_3DNOW;
 
-    return caps;
+    return accel;
 
-#endif /* MPLAYER_CPUDETECT */
+#endif /* 0 */
 }
 #endif /* ARCH_X86 || ARCH_X86_64 */
 
-#if defined(ARCH_PPC) || defined(ARCH_SPARC)
+#if defined(ACCEL_DETECT) && (defined(ARCH_PPC) || defined(ARCH_SPARC))
 #include <signal.h>
 #include <setjmp.h>
 
@@ -154,96 +167,117 @@ static RETSIGTYPE sigill_handler (int sig)
     canjump = 0;
     siglongjmp (jmpbuf, 1);
 }
+#endif /* ACCEL_DETECT && (ARCH_PPC || ARCH_SPARC) */
 
 #ifdef ARCH_PPC
-static uint32_t arch_accel (void)
+static uint32_t arch_accel (uint32_t accel)
 {
-    static RETSIGTYPE (* oldsig) (int);
+#ifdef ACCEL_DETECT
+    if ((accel & (MPEG2_ACCEL_PPC_ALTIVEC | MPEG2_ACCEL_DETECT)) ==
+	MPEG2_ACCEL_DETECT) {
+	static RETSIGTYPE (* oldsig) (int);
 
-    oldsig = signal (SIGILL, sigill_handler);
-    if (sigsetjmp (jmpbuf, 1)) {
-	signal (SIGILL, oldsig);
-	return 0;
-    }
+	oldsig = signal (SIGILL, sigill_handler);
+	if (sigsetjmp (jmpbuf, 1)) {
+	    signal (SIGILL, oldsig);
+	    return accel;
+	}
 
-    canjump = 1;
+	canjump = 1;
 
 #if defined(__APPLE_CC__)	/* apple */
 #define VAND(a,b,c) "vand v" #a ",v" #b ",v" #c "\n\t"
-#else			/* gnu */
+#else				/* gnu */
 #define VAND(a,b,c) "vand " #a "," #b "," #c "\n\t"
 #endif
-    asm volatile ("mtspr 256, %0\n\t"
-		  VAND (0, 0, 0)
-		  :
-		  : "r" (-1));
+	asm volatile ("mtspr 256, %0\n\t"
+		      VAND (0, 0, 0)
+		      :
+		      : "r" (-1));
 
-    canjump = 0;
+	canjump = 0;
+	accel |= MPEG2_ACCEL_PPC_ALTIVEC;
+
+	signal (SIGILL, oldsig);
+    }
+#endif /* ACCEL_DETECT */
 
-    signal (SIGILL, oldsig);
-    return MPEG2_ACCEL_PPC_ALTIVEC;
+    return accel;
 }
 #endif /* ARCH_PPC */
 
 #ifdef ARCH_SPARC
-static uint32_t arch_accel (void)
+static uint32_t arch_accel (uint32_t accel)
 {
-    static RETSIGTYPE (* oldsig) (int);
+    if (accel & MPEG2_ACCEL_SPARC_VIS2)
+	accel |= MPEG2_ACCEL_SPARC_VIS;
 
-    oldsig = signal (SIGILL, sigill_handler);
-    if (sigsetjmp (jmpbuf, 1)) {
-	signal (SIGILL, oldsig);
-	return 0;
-    }
+#ifdef ACCEL_DETECT
+    if ((accel & (MPEG2_ACCEL_SPARC_VIS2 | MPEG2_ACCEL_DETECT)) ==
+	MPEG2_ACCEL_DETECT) {
+	static RETSIGTYPE (* oldsig) (int);
 
-    canjump = 1;
+	oldsig = signal (SIGILL, sigill_handler);
+	if (sigsetjmp (jmpbuf, 1)) {
+	    signal (SIGILL, oldsig);
+	    return accel;
+	}
 
-    /* pdist %f0, %f0, %f0 */
-    __asm__ __volatile__(".word\t0x81b007c0");
+	canjump = 1;
 
-    canjump = 0;
+	/* pdist %f0, %f0, %f0 */
+	__asm__ __volatile__(".word\t0x81b007c0");
 
-    if (sigsetjmp (jmpbuf, 1)) {
-	signal (SIGILL, oldsig);
-	return MPEG2_ACCEL_SPARC_VIS;
-    }
+	canjump = 0;
+	accel |= MPEG2_ACCEL_SPARC_VIS;
 
-    canjump = 1;
+	if (sigsetjmp (jmpbuf, 1)) {
+	    signal (SIGILL, oldsig);
+	    return accel;
+	}
 
-    /* edge8n %g0, %g0, %g0 */
-    __asm__ __volatile__(".word\t0x81b00020");
+	canjump = 1;
 
-    canjump = 0;
+	/* edge8n %g0, %g0, %g0 */
+	__asm__ __volatile__(".word\t0x81b00020");
+
+	canjump = 0;
+	accel |= MPEG2_ACCEL_SPARC_VIS2;
+
+	signal (SIGILL, oldsig);
+    }
+#endif /* ACCEL_DETECT */
 
-    signal (SIGILL, oldsig);
-    return MPEG2_ACCEL_SPARC_VIS | MPEG2_ACCEL_SPARC_VIS2;
+    return accel;
 }
 #endif /* ARCH_SPARC */
-#endif /* ARCH_PPC || ARCH_SPARC */
 
 #ifdef ARCH_ALPHA
-static uint32_t arch_accel (void)
+static inline uint32_t arch_accel (uint32_t accel)
 {
-    uint64_t no_mvi;
+    if (accel & MPEG2_ACCEL_ALPHA_MVI)
+	accel |= MPEG2_ACCEL_ALPHA;
+
+#ifdef ACCEL_DETECT
+    if (accel & MPEG2_ACCEL_DETECT) {
+	uint64_t no_mvi;
+
+	asm volatile ("amask %1, %0"
+		      : "=r" (no_mvi)
+		      : "rI" (256));	/* AMASK_MVI */
+	accel |= no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA |
+					       MPEG2_ACCEL_ALPHA_MVI);
+    }
+#endif /* ACCEL_DETECT */
 
-    asm volatile ("amask %1, %0"
-		  : "=r" (no_mvi)
-		  : "rI" (256));	/* AMASK_MVI */
-    return no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA |
-					 MPEG2_ACCEL_ALPHA_MVI);
+    return accel;
 }
 #endif /* ARCH_ALPHA */
-#endif /* ACCEL_DETECT */
 
-uint32_t mpeg2_detect_accel (void)
+uint32_t mpeg2_detect_accel (uint32_t accel)
 {
-    uint32_t accel;
-
-    accel = 0;
-#ifdef ACCEL_DETECT
 #if defined (ARCH_X86) || defined (ARCH_X86_64) || defined (ARCH_PPC) || defined (ARCH_ALPHA) || defined (ARCH_SPARC)
-    accel = arch_accel ();
-#endif
+    accel = arch_accel (accel);
 #endif
     return accel;
 }
diff --git a/libmpeg2/cpu_state.c b/libmpeg2/cpu_state.c
index 5b773b245e..2f2f64a987 100644
--- a/libmpeg2/cpu_state.c
+++ b/libmpeg2/cpu_state.c
@@ -19,10 +19,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * Modified for use with MPlayer, see libmpeg2_changes.diff for the exact changes.
- * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
- * $Id$
  */
 
 #include "config.h"
@@ -54,7 +50,7 @@ static void state_restore_mmx (cpu_state_t * state)
 #define STVX(a,b,c) "stvx v" #a ",r" #b ",r" #c "\n\t"
 #define LVX0(a,b,c) "lvx v" #a ",0,r" #c "\n\t"
 #define LVX(a,b,c) "lvx v" #a ",r" #b ",r" #c "\n\t"
-#else			/* gnu */
+#else				/* gnu */
 #define LI(a,b) "li " #a "," #b "\n\t"
 #define STVX0(a,b,c) "stvx " #a ",0," #c "\n\t"
 #define STVX(a,b,c) "stvx " #a "," #b "," #c "\n\t"
diff --git a/libmpeg2/decode.c b/libmpeg2/decode.c
index d9ae05c9a8..f30b86b740 100644
--- a/libmpeg2/decode.c
+++ b/libmpeg2/decode.c
@@ -135,20 +135,20 @@ static inline mpeg2_state_t seek_chunk (mpeg2dec_t * mpeg2dec)
     }
     mpeg2dec->bytes_since_tag += skipped;
     mpeg2dec->code = mpeg2dec->buf_start[-1];
-    return (mpeg2_state_t)-1;
+    return STATE_INTERNAL_NORETURN;
 }
 
 mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec)
 {
-    while (mpeg2dec->code != 0xb3 &&
-	   ((mpeg2dec->code != 0xb7 && mpeg2dec->code != 0xb8 &&
-	     mpeg2dec->code) || mpeg2dec->sequence.width == (unsigned)-1))
+    while (!(mpeg2dec->code == 0xb3 ||
+	     ((mpeg2dec->code == 0xb7 || mpeg2dec->code == 0xb8 ||
+	       !mpeg2dec->code) && mpeg2dec->sequence.width != (unsigned)-1)))
 	if (seek_chunk (mpeg2dec) == STATE_BUFFER)
 	    return STATE_BUFFER;
     mpeg2dec->chunk_start = mpeg2dec->chunk_ptr = mpeg2dec->chunk_buffer;
     mpeg2dec->user_data_len = 0;
-    return (mpeg2dec->code ? mpeg2_parse_header (mpeg2dec) :
-	    mpeg2_header_picture_start (mpeg2dec));
+    return ((mpeg2dec->code == 0xb7) ?
+	    mpeg2_header_end (mpeg2dec) : mpeg2_parse_header (mpeg2dec));
 }
 
 #define RECEIVED(code,state) (((state) << 8) + (code))
@@ -161,7 +161,7 @@ mpeg2_state_t mpeg2_parse (mpeg2dec_t * mpeg2dec)
 	mpeg2_state_t state;
 
 	state = mpeg2dec->action (mpeg2dec);
-	if ((int)state >= 0)
+	if ((int)state > (int)STATE_INTERNAL_NORETURN)
 	    return state;
     }
 
@@ -200,22 +200,18 @@ mpeg2_state_t mpeg2_parse (mpeg2dec_t * mpeg2dec)
 	    return STATE_BUFFER;
     }
 
+    mpeg2dec->action = mpeg2_seek_header;
     switch (mpeg2dec->code) {
     case 0x00:
-	mpeg2dec->action = mpeg2_header_picture_start;
 	return mpeg2dec->state;
-    case 0xb7:
-	mpeg2dec->action = mpeg2_header_end;
-	break;
     case 0xb3:
+    case 0xb7:
     case 0xb8:
-	mpeg2dec->action = mpeg2_parse_header;
-	break;
+	return (mpeg2dec->state == STATE_SLICE) ? STATE_SLICE : STATE_INVALID;
     default:
 	mpeg2dec->action = seek_chunk;
 	return STATE_INVALID;
     }
-    return (mpeg2dec->state == STATE_SLICE) ? STATE_SLICE : STATE_INVALID;
 }
 
 mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
@@ -262,7 +258,6 @@ mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
 
 	/* state transition after a sequence header */
 	case RECEIVED (0x00, STATE_SEQUENCE):
-	    mpeg2dec->action = mpeg2_header_picture_start;
 	case RECEIVED (0xb8, STATE_SEQUENCE):
 	    mpeg2_header_sequence_finalize (mpeg2dec);
 	    break;
@@ -270,7 +265,6 @@ mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
 	/* other legal state transitions */
 	case RECEIVED (0x00, STATE_GOP):
 	    mpeg2_header_gop_finalize (mpeg2dec);
-	    mpeg2dec->action = mpeg2_header_picture_start;
 	    break;
 	case RECEIVED (0x01, STATE_PICTURE):
 	case RECEIVED (0x01, STATE_PICTURE_2ND):
@@ -362,8 +356,8 @@ void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[3], void * id)
 	mpeg2dec->fbuf[1]->buf[2]=buf[2];
 	mpeg2dec->fbuf[1]->id=NULL;
     }
-//        printf("libmpeg2: FBUF 0:%p 1:%p 2:%p\n",
-//	    mpeg2dec->fbuf[0]->buf[0],mpeg2dec->fbuf[1]->buf[0],mpeg2dec->fbuf[2]->buf[0]);
+//    printf("libmpeg2: FBUF 0:%p 1:%p 2:%p\n",
+//	mpeg2dec->fbuf[0]->buf[0],mpeg2dec->fbuf[1]->buf[0],mpeg2dec->fbuf[2]->buf[0]);
 }
 
 void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf)
@@ -398,12 +392,10 @@ void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2)
 uint32_t mpeg2_accel (uint32_t accel)
 {
     if (!mpeg2_accels) {
-	if (accel & MPEG2_ACCEL_DETECT)
-	    accel |= mpeg2_detect_accel ();
-	mpeg2_accels = accel |= MPEG2_ACCEL_DETECT;
-	mpeg2_cpu_state_init (accel);
-	mpeg2_idct_init (accel);
-	mpeg2_mc_init (accel);
+	mpeg2_accels = mpeg2_detect_accel (accel) | MPEG2_ACCEL_DETECT;
+	mpeg2_cpu_state_init (mpeg2_accels);
+	mpeg2_idct_init (mpeg2_accels);
+	mpeg2_mc_init (mpeg2_accels);
     }
     return mpeg2_accels & ~MPEG2_ACCEL_DETECT;
 }
diff --git a/libmpeg2/header.c b/libmpeg2/header.c
index ae8b228a63..040651d20e 100644
--- a/libmpeg2/header.c
+++ b/libmpeg2/header.c
@@ -246,7 +246,7 @@ static int sequence_ext (mpeg2dec_t * mpeg2dec)
     sequence->vbv_buffer_size |= buffer[4] << 21;
 
     sequence->frame_period =
-	sequence->frame_period * ((buffer[5]&31)+1) / (((buffer[5]>>2)&3)+1);
+	sequence->frame_period * ((buffer[5]&31)+1) / (((buffer[5]>>5)&3)+1);
 
     mpeg2dec->ext_state = SEQ_DISPLAY_EXT;
 
@@ -257,12 +257,11 @@ static int sequence_display_ext (mpeg2dec_t * mpeg2dec)
 {
     uint8_t * buffer = mpeg2dec->chunk_start;
     mpeg2_sequence_t * sequence = &(mpeg2dec->new_sequence);
-    uint32_t flags;
 
-    flags = ((sequence->flags & ~SEQ_MASK_VIDEO_FORMAT) |
-	     ((buffer[0]<<4) & SEQ_MASK_VIDEO_FORMAT));
+    sequence->flags = ((sequence->flags & ~SEQ_MASK_VIDEO_FORMAT) |
+		       ((buffer[0]<<4) & SEQ_MASK_VIDEO_FORMAT));
     if (buffer[0] & 1) {
-	flags |= SEQ_FLAG_COLOUR_DESCRIPTION;
+	sequence->flags |= SEQ_FLAG_COLOUR_DESCRIPTION;
 	sequence->colour_primaries = buffer[1];
 	sequence->transfer_characteristics = buffer[2];
 	sequence->matrix_coefficients = buffer[3];
@@ -281,6 +280,17 @@ static int sequence_display_ext (mpeg2dec_t * mpeg2dec)
     return 0;
 }
 
+static inline void simplify (unsigned int * u, unsigned int * v)
+{
+    unsigned int a, b, tmp;
+
+    a = *u;	b = *v;
+    while (a) {	/* find greatest common divisor */
+	tmp = a;	a = b % tmp;	b = tmp;
+    }
+    *u /= b;	*v /= b;
+}
+
 static inline void finalize_sequence (mpeg2_sequence_t * sequence)
 {
     int width;
@@ -317,8 +327,10 @@ static inline void finalize_sequence (mpeg2_sequence_t * sequence)
 	    sequence->pixel_width = 64;	sequence->pixel_height = 45;	return;
 	case 6:	/* 720x480 16:9 */
 	    sequence->pixel_width = 32;	sequence->pixel_height = 27;	return;
-	case 12:	/* 720*480 4:3 */
-	    sequence->pixel_width = 8;	sequence->pixel_height = 9;	return;
+	case 8: /* BT.601 625 lines 4:3 */
+	    sequence->pixel_width = 59;	sequence->pixel_height = 54;	return;
+	case 12: /* BT.601 525 lines 4:3 */
+	    sequence->pixel_width = 10;	sequence->pixel_height = 11;	return;
 	default:
 	    height = 88 * sequence->pixel_width + 1171;
 	    width = 2000;
@@ -327,22 +339,89 @@ static inline void finalize_sequence (mpeg2_sequence_t * sequence)
 
     sequence->pixel_width = width;
     sequence->pixel_height = height;
-    while (width) {	/* find greatest common divisor */
-	int tmp = width;
-	width = height % tmp;
-	height = tmp;
+    simplify (&sequence->pixel_width, &sequence->pixel_height);
+}
+
+int mpeg2_guess_aspect (const mpeg2_sequence_t * sequence,
+			unsigned int * pixel_width,
+			unsigned int * pixel_height)
+{
+    static struct {
+	unsigned int width, height;
+    } video_modes[] = {
+	{720, 576}, /* 625 lines, 13.5 MHz (D1, DV, DVB, DVD) */
+	{704, 576}, /* 625 lines, 13.5 MHz (1/1 D1, DVB, DVD, 4CIF) */
+	{544, 576}, /* 625 lines, 10.125 MHz (DVB, laserdisc) */
+	{528, 576}, /* 625 lines, 10.125 MHz (3/4 D1, DVB, laserdisc) */
+	{480, 576}, /* 625 lines, 9 MHz (2/3 D1, DVB, SVCD) */
+	{352, 576}, /* 625 lines, 6.75 MHz (D2, 1/2 D1, CVD, DVB, DVD) */
+	{352, 288}, /* 625 lines, 6.75 MHz, 1 field (D4, VCD, DVB, DVD, CIF) */
+	{176, 144}, /* 625 lines, 3.375 MHz, half field (QCIF) */
+	{720, 486}, /* 525 lines, 13.5 MHz (D1) */
+	{704, 486}, /* 525 lines, 13.5 MHz */
+	{720, 480}, /* 525 lines, 13.5 MHz (DV, DSS, DVD) */
+	{704, 480}, /* 525 lines, 13.5 MHz (1/1 D1, ATSC, DVD) */
+	{544, 480}, /* 525 lines. 10.125 MHz (DSS, laserdisc) */
+	{528, 480}, /* 525 lines. 10.125 MHz (3/4 D1, laserdisc) */
+	{480, 480}, /* 525 lines, 9 MHz (2/3 D1, SVCD) */
+	{352, 480}, /* 525 lines, 6.75 MHz (D2, 1/2 D1, CVD, DVD) */
+	{352, 240}  /* 525  lines. 6.75 MHz, 1 field (D4, VCD, DSS, DVD) */
+    };
+    unsigned int width, height, pix_width, pix_height, i, DAR_16_9;
+
+    *pixel_width = sequence->pixel_width;
+    *pixel_height = sequence->pixel_height;
+    width = sequence->picture_width;
+    height = sequence->picture_height;
+    for (i = 0; i < sizeof (video_modes) / sizeof (video_modes[0]); i++)
+	if (width == video_modes[i].width && height == video_modes[i].height)
+	    break;
+    if (i == sizeof (video_modes) / sizeof (video_modes[0]) ||
+	(sequence->pixel_width == 1 && sequence->pixel_height == 1) ||
+	width != sequence->display_width || height != sequence->display_height)
+	return 0;
+
+    for (pix_height = 1; height * pix_height < 480; pix_height <<= 1);
+    height *= pix_height;
+    for (pix_width = 1; width * pix_width <= 352; pix_width <<= 1);
+    width *= pix_width;
+
+    if (! (sequence->flags & SEQ_FLAG_MPEG2)) {
+	static unsigned int mpeg1_check[2][2] = {{11, 54}, {27, 45}};
+	DAR_16_9 = (sequence->pixel_height == 27 ||
+		    sequence->pixel_height == 45);
+	if (width < 704 ||
+	    sequence->pixel_height != mpeg1_check[DAR_16_9][height == 576])
+	    return 0;
+    } else {
+	DAR_16_9 = (3 * sequence->picture_width * sequence->pixel_width >
+		    4 * sequence->picture_height * sequence->pixel_height);
+	switch (width) {
+	case 528: case 544:	pix_width *= 4; pix_height *= 3; break;
+	case 480:		pix_width *= 3; pix_height *= 2; break;
+	}
+    }
+    if (DAR_16_9) {
+	pix_width *= 4; pix_height *= 3;
+    }
+    if (height == 576) {
+	pix_width *= 59; pix_height *= 54;
+    } else {
+	pix_width *= 10; pix_height *= 11;
     }
-    sequence->pixel_width /= height;
-    sequence->pixel_height /= height;
+    *pixel_width = pix_width;
+    *pixel_height = pix_height;
+    simplify (pixel_width, pixel_height);
+    return (height == 576) ? 1 : 2;
 }
 
-static void copy_matrix (mpeg2dec_t * mpeg2dec, int index)
+static void copy_matrix (mpeg2dec_t * mpeg2dec, int idx)
 {
-    if (memcmp (mpeg2dec->quantizer_matrix[index],
-		mpeg2dec->new_quantizer_matrix[index], 64)) {
-	memcpy (mpeg2dec->quantizer_matrix[index],
-		mpeg2dec->new_quantizer_matrix[index], 64);
-	mpeg2dec->scaled[index] = -1;
+    if (memcmp (mpeg2dec->quantizer_matrix[idx],
+		mpeg2dec->new_quantizer_matrix[idx], 64)) {
+	memcpy (mpeg2dec->quantizer_matrix[idx],
+		mpeg2dec->new_quantizer_matrix[idx], 64);
+	mpeg2dec->scaled[idx] = -1;
     }
 }
 
@@ -392,31 +471,30 @@ void mpeg2_header_sequence_finalize (mpeg2dec_t * mpeg2dec)
 			      (sequence->chroma_height == sequence->height));
 
     if (mpeg2dec->sequence.width != (unsigned)-1) {
-	unsigned int new_byte_rate;
-
 	/*
 	 * According to 6.1.1.6, repeat sequence headers should be
-	 * identical to the original. However some DVDs dont respect
-	 * that and have different bitrates in the repeat sequence
-	 * headers. So we'll ignore that in the comparison and still
-	 * consider these as repeat sequence headers.
-	 *
-	 * However, be careful not to alter the current sequence when
-	 * returning STATE_INVALID_END.
+	 * identical to the original. However some encoders do not
+	 * respect that and change various fields (including bitrate
+	 * and aspect ratio) in the repeat sequence headers. So we
+	 * choose to be as conservative as possible and only restart
+	 * the decoder if the width, height, chroma_width,
+	 * chroma_height or low_delay flag are modified.
 	 */
-	new_byte_rate = sequence->byte_rate;
-	sequence->byte_rate = mpeg2dec->sequence.byte_rate;
-	if (memcmp (&(mpeg2dec->sequence), sequence,
-		    sizeof (mpeg2_sequence_t))) {
+	if (sequence->width != mpeg2dec->sequence.width ||
+	    sequence->height != mpeg2dec->sequence.height ||
+	    sequence->chroma_width != mpeg2dec->sequence.chroma_width ||
+	    sequence->chroma_height != mpeg2dec->sequence.chroma_height ||
+	    ((sequence->flags ^ mpeg2dec->sequence.flags) &
+	     SEQ_FLAG_LOW_DELAY)) {
 	    decoder->stride_frame = sequence->width;
-	    sequence->byte_rate = new_byte_rate;
 	    mpeg2_header_end (mpeg2dec);
 	    mpeg2dec->action = invalid_end_action;
 	    mpeg2dec->state = STATE_INVALID_END;
 	    return;
 	}
-	sequence->byte_rate = new_byte_rate;
-	mpeg2dec->state = STATE_SEQUENCE_REPEATED;
+	mpeg2dec->state = (memcmp (&(mpeg2dec->sequence), sequence,
+				   sizeof (mpeg2_sequence_t)) ?
+			   STATE_SEQUENCE_MODIFIED : STATE_SEQUENCE_REPEATED);
     } else
 	decoder->stride_frame = sequence->width;
     mpeg2dec->sequence = *sequence;
@@ -468,62 +546,53 @@ void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type)
 	}
 }
 
-mpeg2_state_t mpeg2_header_picture_start (mpeg2dec_t * mpeg2dec)
+int mpeg2_header_picture (mpeg2dec_t * mpeg2dec)
 {
+    uint8_t * buffer = mpeg2dec->chunk_start;
     mpeg2_picture_t * picture = &(mpeg2dec->new_picture);
+    mpeg2_decoder_t * decoder = &(mpeg2dec->decoder);
+    int type;
 
     mpeg2dec->state = ((mpeg2dec->state != STATE_SLICE_1ST) ?
 		       STATE_PICTURE : STATE_PICTURE_2ND);
-    picture->flags = 0;
+    mpeg2dec->ext_state = PIC_CODING_EXT;
+
+    picture->temporal_reference = (buffer[0] << 2) | (buffer[1] >> 6);
+
+    type = (buffer [1] >> 3) & 7;
+    if (type == PIC_FLAG_CODING_TYPE_P || type == PIC_FLAG_CODING_TYPE_B) {
+	/* forward_f_code and backward_f_code - used in mpeg1 only */
+	decoder->f_motion.f_code[1] = (buffer[3] >> 2) & 1;
+	decoder->f_motion.f_code[0] =
+	    (((buffer[3] << 1) | (buffer[4] >> 7)) & 7) - 1;
+	decoder->b_motion.f_code[1] = (buffer[4] >> 6) & 1;
+	decoder->b_motion.f_code[0] = ((buffer[4] >> 3) & 7) - 1;
+    }
+
+    picture->flags = PIC_FLAG_PROGRESSIVE_FRAME | type;
     picture->tag = picture->tag2 = 0;
     if (mpeg2dec->num_tags) {
-	if (mpeg2dec->bytes_since_tag >= 4) {
+	if (mpeg2dec->bytes_since_tag >= mpeg2dec->chunk_ptr - buffer + 4) {
 	    mpeg2dec->num_tags = 0;
 	    picture->tag = mpeg2dec->tag_current;
 	    picture->tag2 = mpeg2dec->tag2_current;
-	    picture->flags = PIC_FLAG_TAGS;
+	    picture->flags |= PIC_FLAG_TAGS;
 	} else if (mpeg2dec->num_tags > 1) {
 	    mpeg2dec->num_tags = 1;
 	    picture->tag = mpeg2dec->tag_previous;
 	    picture->tag2 = mpeg2dec->tag2_previous;
-	    picture->flags = PIC_FLAG_TAGS;
+	    picture->flags |= PIC_FLAG_TAGS;
 	}
     }
+    picture->nb_fields = 2;
     picture->display_offset[0].x = picture->display_offset[1].x =
 	picture->display_offset[2].x = mpeg2dec->display_offset_x;
     picture->display_offset[0].y = picture->display_offset[1].y =
 	picture->display_offset[2].y = mpeg2dec->display_offset_y;
-    return mpeg2_parse_header (mpeg2dec);
-}
-
-int mpeg2_header_picture (mpeg2dec_t * mpeg2dec)
-{
-    uint8_t * buffer = mpeg2dec->chunk_start;
-    mpeg2_picture_t * picture = &(mpeg2dec->new_picture);
-    mpeg2_decoder_t * decoder = &(mpeg2dec->decoder);
-    int type;
-
-    type = (buffer [1] >> 3) & 7;
-    mpeg2dec->ext_state = PIC_CODING_EXT;
-
-    picture->temporal_reference = (buffer[0] << 2) | (buffer[1] >> 6);
-
-    picture->flags |= type;
-
-    if (type == PIC_FLAG_CODING_TYPE_P || type == PIC_FLAG_CODING_TYPE_B) {
-	/* forward_f_code and backward_f_code - used in mpeg1 only */
-	decoder->f_motion.f_code[1] = (buffer[3] >> 2) & 1;
-	decoder->f_motion.f_code[0] =
-	    (((buffer[3] << 1) | (buffer[4] >> 7)) & 7) - 1;
-	decoder->b_motion.f_code[1] = (buffer[4] >> 6) & 1;
-	decoder->b_motion.f_code[0] = ((buffer[4] >> 3) & 7) - 1;
-    }
 
     /* XXXXXX decode extra_information_picture as well */
 
-    picture->nb_fields = 2;
-
-    mpeg2dec->q_scale_type = 0;
+    decoder->q_scale_type = 0;
     decoder->intra_dc_precision = 7;
     decoder->frame_pred_frame_dct = 1;
     decoder->concealment_motion_vectors = 0;
@@ -570,10 +639,11 @@ static int picture_coding_ext (mpeg2dec_t * mpeg2dec)
     decoder->top_field_first = buffer[3] >> 7;
     decoder->frame_pred_frame_dct = (buffer[3] >> 6) & 1;
     decoder->concealment_motion_vectors = (buffer[3] >> 5) & 1;
-    mpeg2dec->q_scale_type = buffer[3] & 16;
+    decoder->q_scale_type = buffer[3] & 16;
     decoder->intra_vlc_format = (buffer[3] >> 3) & 1;
     decoder->scan = (buffer[3] & 4) ? mpeg2_scan_alt : mpeg2_scan_norm;
-    flags |= (buffer[4] & 0x80) ? PIC_FLAG_PROGRESSIVE_FRAME : 0;
+    if (!(buffer[4] & 0x80))
+	flags &= ~PIC_FLAG_PROGRESSIVE_FRAME;
     if (buffer[4] & 0x40)
 	flags |= (((buffer[4]<<26) | (buffer[5]<<18) | (buffer[6]<<10)) &
 		  PIC_MASK_COMPOSITE_DISPLAY) | PIC_FLAG_COMPOSITE_DISPLAY;
@@ -794,7 +864,7 @@ int mpeg2_header_user_data (mpeg2dec_t * mpeg2dec)
     return 0;
 }
 
-static void prescale (mpeg2dec_t * mpeg2dec, int index)
+static void prescale (mpeg2dec_t * mpeg2dec, int idx)
 {
     static int non_linear_scale [] = {
 	 0,  1,  2,  3,  4,  5,   6,   7,
@@ -805,14 +875,14 @@ static void prescale (mpeg2dec_t * mpeg2dec, int index)
     int i, j, k;
     mpeg2_decoder_t * decoder = &(mpeg2dec->decoder);
 
-    if (mpeg2dec->scaled[index] != mpeg2dec->q_scale_type) {
-	mpeg2dec->scaled[index] = mpeg2dec->q_scale_type;
+    if (mpeg2dec->scaled[idx] != decoder->q_scale_type) {
+	mpeg2dec->scaled[idx] = decoder->q_scale_type;
 	for (i = 0; i < 32; i++) {
-	    k = mpeg2dec->q_scale_type ? non_linear_scale[i] : (i << 1);
+	    k = decoder->q_scale_type ? non_linear_scale[i] : (i << 1);
 	    decoder->quantizer_scales[i] = k;
 	    for (j = 0; j < 64; j++)
-		decoder->quantizer_prescale[index][i][j] =
-		    k * mpeg2dec->quantizer_matrix[index][j];
+		decoder->quantizer_prescale[idx][i][j] =
+		    k * mpeg2dec->quantizer_matrix[idx][j];
 	}
     }
 }
@@ -864,7 +934,7 @@ mpeg2_state_t mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec)
 			 mpeg2dec->fbuf[b_type]->buf);
     }
     mpeg2dec->action = NULL;
-    return (mpeg2_state_t)-1;
+    return STATE_INTERNAL_NORETURN;
 }
 
 static mpeg2_state_t seek_sequence (mpeg2dec_t * mpeg2dec)
diff --git a/libmpeg2/idct.c b/libmpeg2/idct.c
index e3f88dad30..82049df4bc 100644
--- a/libmpeg2/idct.c
+++ b/libmpeg2/idct.c
@@ -283,8 +283,6 @@ void mpeg2_idct_init (uint32_t accel)
     } else
 #endif
     {
-	extern uint8_t mpeg2_scan_norm[64];
-	extern uint8_t mpeg2_scan_alt[64];
 	int i, j;
 
 	mpeg2_idct_copy = mpeg2_idct_copy_c;
diff --git a/libmpeg2/idct_alpha.c b/libmpeg2/idct_alpha.c
index 007185bf18..bc2f886492 100644
--- a/libmpeg2/idct_alpha.c
+++ b/libmpeg2/idct_alpha.c
@@ -364,8 +364,6 @@ void mpeg2_idct_add_alpha (const int last, int16_t * block,
 
 void mpeg2_idct_alpha_init (void)
 {
-    extern uint8_t mpeg2_scan_norm[64];
-    extern uint8_t mpeg2_scan_alt[64];
     int i, j;
 
     for (i = 0; i < 64; i++) {
diff --git a/libmpeg2/idct_altivec.c b/libmpeg2/idct_altivec.c
index 381ef069f0..b5b395a205 100644
--- a/libmpeg2/idct_altivec.c
+++ b/libmpeg2/idct_altivec.c
@@ -272,8 +272,6 @@ void mpeg2_idct_add_altivec (const int last, int16_t * const _block,
 
 void mpeg2_idct_altivec_init (void)
 {
-    extern uint8_t mpeg2_scan_norm[64];
-    extern uint8_t mpeg2_scan_alt[64];
     int i, j;
 
     /* the altivec idct uses a transposed input, so we patch scan tables */
diff --git a/libmpeg2/idct_mmx.c b/libmpeg2/idct_mmx.c
index a682284dab..50f8f18c3e 100644
--- a/libmpeg2/idct_mmx.c
+++ b/libmpeg2/idct_mmx.c
@@ -19,10 +19,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * Modified for use with MPlayer, see libmpeg2_changes.diff for the exact changes.
- * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
- * $Id$
  */
 
 #include "config.h"
@@ -1294,8 +1290,6 @@ void mpeg2_idct_add_mmx (const int last, int16_t * const block,
 
 void mpeg2_idct_mmx_init (void)
 {
-    extern uint8_t mpeg2_scan_norm[64];
-    extern uint8_t mpeg2_scan_alt[64];
     int i, j;
 
     /* the mmx/mmxext idct uses a reordered input, so we patch scan tables */
diff --git a/libmpeg2/mmx.h b/libmpeg2/mmx.h
index fcb92870d2..c62be1f581 100644
--- a/libmpeg2/mmx.h
+++ b/libmpeg2/mmx.h
@@ -21,6 +21,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#ifndef LIBMPEG2_MMX_H
+#define LIBMPEG2_MMX_H
+
 /*
  * The type of an value that fits in an MMX register (note that long
  * long constant values MUST be suffixed by LL and unsigned long long
@@ -285,3 +288,5 @@ typedef	union {
 #define	pshufw_r2r(regs,regd,imm)	mmx_r2ri(pshufw, regs, regd, imm)
 
 #define	sfence() __asm__ __volatile__ ("sfence\n\t")
+
+#endif /* LIBMPEG2_MMX_H */
diff --git a/libmpeg2/motion_comp_arm.c b/libmpeg2/motion_comp_arm.c
index c83d57d676..0111f7f8d3 100644
--- a/libmpeg2/motion_comp_arm.c
+++ b/libmpeg2/motion_comp_arm.c
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with mpeg2dec; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
@@ -30,12 +30,12 @@
 #include "attributes.h"
 #include "mpeg2_internal.h"
 
-#define avg2(a,b) ((a+b+1)>>1)
+#define avg2(a,b)     ((a+b+1)>>1)
 #define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
 
-#define predict_o(i) (ref[i])
-#define predict_x(i) (avg2 (ref[i], ref[i+1]))
-#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
+#define predict_o(i)  (ref[i])
+#define predict_x(i)  (avg2 (ref[i], ref[i+1]))
+#define predict_y(i)  (avg2 (ref[i], (ref+stride)[i]))
 #define predict_xy(i) (avg4 (ref[i], ref[i+1], \
 			     (ref+stride)[i], (ref+stride)[i+1]))
 
@@ -67,7 +67,7 @@ static void inline MC_##op##_##xy##_16_c (uint8_t * dest, const uint8_t * ref,	\
 	op (predict_##xy, 15);						\
 	ref += stride;							\
 	dest += stride;							\
-    } while (--height);							\
+    } while (--height);						\
 }									\
 static void MC_##op##_##xy##_8_c (uint8_t * dest, const uint8_t * ref,	\
 				  const int stride, int height)		\
@@ -83,13 +83,11 @@ static void MC_##op##_##xy##_8_c (uint8_t * dest, const uint8_t * ref,	\
 	op (predict_##xy, 7);						\
 	ref += stride;							\
 	dest += stride;							\
-    } while (--height);							\
+    } while (--height);						\
 }									\
 /* definitions of the actual mc functions */
 
-MC_FUNC (put,o)
 MC_FUNC (avg,o)
-MC_FUNC (put,x)
 MC_FUNC (avg,x)
 MC_FUNC (put,y)
 MC_FUNC (avg,y)
@@ -117,7 +115,7 @@ static void MC_put_xy_16_arm (uint8_t * dest, const uint8_t * ref,
 }
 
 extern void MC_put_o_8_arm (uint8_t * dest, const uint8_t * ref,
-				int stride, int height);
+			     int stride, int height);
 
 extern void MC_put_x_8_arm (uint8_t * dest, const uint8_t * ref,
 			    int stride, int height);
diff --git a/libmpeg2/motion_comp_arm_s.S b/libmpeg2/motion_comp_arm_s.S
index fd71fb3b83..f6c3d7df8e 100644
--- a/libmpeg2/motion_comp_arm_s.S
+++ b/libmpeg2/motion_comp_arm_s.S
@@ -15,9 +15,10 @@
 @ GNU General Public License for more details.
 @
 @ You should have received a copy of the GNU General Public License
-@ along with this program; if not, write to the Free Software
+@ along with mpeg2dec; if not, write to the Free Software
 @ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
+
 	.text
 
 @ ----------------------------------------------------------------
diff --git a/libmpeg2/motion_comp_mmx.c b/libmpeg2/motion_comp_mmx.c
index 964695570a..fc265f4f99 100644
--- a/libmpeg2/motion_comp_mmx.c
+++ b/libmpeg2/motion_comp_mmx.c
@@ -19,10 +19,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * Modified for use with MPlayer, see libmpeg2_changes.diff for the exact changes.
- * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
- * $Id$
  */
 
 #include "config.h"
@@ -67,7 +63,7 @@ static mmx_t round4 = {0x0002000200020002LL};
  * unrolling will help
  */
 
-static inline void mmx_zero_reg ()
+static inline void mmx_zero_reg (void)
 {
     /* load 0 into mm0 */
     pxor_r2r (mm0, mm0);
diff --git a/libmpeg2/mpeg2.h b/libmpeg2/mpeg2.h
index 08933b5843..8eef2ce716 100644
--- a/libmpeg2/mpeg2.h
+++ b/libmpeg2/mpeg2.h
@@ -1,6 +1,6 @@
 /*
  * mpeg2.h
- * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2004 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
@@ -25,11 +25,11 @@
  * $Id$
  */
 
-#ifndef MPEG2_H
-#define MPEG2_H
+#ifndef LIBMPEG2_MPEG2_H
+#define LIBMPEG2_MPEG2_H
 
 #define MPEG2_VERSION(a,b,c) (((a)<<16)|((b)<<8)|(c))
-#define MPEG2_RELEASE MPEG2_VERSION (0, 4, 1)	/* 0.4.1 */
+#define MPEG2_RELEASE MPEG2_VERSION (0, 5, 1)	/* 0.5.1 */
 
 #define SEQ_FLAG_MPEG2 1
 #define SEQ_FLAG_CONSTRAINED_PARAMETERS 2
@@ -132,7 +132,8 @@ typedef enum {
     STATE_SLICE = 7,
     STATE_END = 8,
     STATE_INVALID = 9,
-    STATE_INVALID_END = 10
+    STATE_INVALID_END = 10,
+    STATE_SEQUENCE_MODIFIED = 11
 } mpeg2_state_t;
 
 typedef struct mpeg2_convert_init_s {
@@ -160,6 +161,7 @@ void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf);
 #define MPEG2_ACCEL_X86_3DNOW 2
 #define MPEG2_ACCEL_X86_MMXEXT 4
 #define MPEG2_ACCEL_X86_SSE2 8
+#define MPEG2_ACCEL_X86_SSE3 16
 #define MPEG2_ACCEL_PPC_ALTIVEC 1
 #define MPEG2_ACCEL_ALPHA 1
 #define MPEG2_ACCEL_ALPHA_MVI 2
@@ -187,6 +189,9 @@ void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2);
 void mpeg2_init_fbuf (mpeg2_decoder_t * decoder, uint8_t * current_fbuf[3],
 		      uint8_t * forward_fbuf[3], uint8_t * backward_fbuf[3]);
 void mpeg2_slice (mpeg2_decoder_t * decoder, int code, const uint8_t * buffer);
+int mpeg2_guess_aspect (const mpeg2_sequence_t * sequence,
+			unsigned int * pixel_width,
+			unsigned int * pixel_height);
 
 typedef enum {
     MPEG2_ALLOC_MPEG2DEC = 0,
@@ -201,4 +206,4 @@ void mpeg2_free (void * buf);
 void mpeg2_malloc_hooks (void * malloc (unsigned, mpeg2_alloc_t),
 			 int free (void *));
 
-#endif /* MPEG2_H */
+#endif /* LIBMPEG2_MPEG2_H */
diff --git a/libmpeg2/mpeg2_internal.h b/libmpeg2/mpeg2_internal.h
index 04a31f6926..ee4fc32062 100644
--- a/libmpeg2/mpeg2_internal.h
+++ b/libmpeg2/mpeg2_internal.h
@@ -25,6 +25,11 @@
  * $Id$
  */
 
+#ifndef LIBMPEG2_MPEG2_INTERNAL_H
+#define LIBMPEG2_MPEG2_INTERNAL_H
+
+#define STATE_INTERNAL_NORETURN ((mpeg2_state_t)-1)
+
 /* macroblock modes */
 #define MACROBLOCK_INTRA 1
 #define MACROBLOCK_PATTERN 2
@@ -149,6 +154,9 @@ struct mpeg2_decoder_s {
 
     int mpeg1;
 
+    /* XXX: stuff due to xine shit */
+    int8_t q_scale_type;
+
     int quantizer_scales[32];
     int quantizer_scale;
     char* quant_store;
@@ -220,7 +228,8 @@ struct mpeg2dec_s {
     int16_t display_offset_x, display_offset_y;
 
     int copy_matrix;
-    int8_t q_scale_type, scaled[4];
+    int8_t scaled[4]; /* XXX: MOVED */
+    //int8_t q_scale_type, scaled[4];
     uint8_t quantizer_matrix[4][64];
     uint8_t new_quantizer_matrix[4][64];
 
@@ -236,7 +245,7 @@ typedef struct {
 } cpu_state_t;
 
 /* cpu_accel.c */
-uint32_t mpeg2_detect_accel (void);
+uint32_t mpeg2_detect_accel (uint32_t accel);
 
 /* cpu_state.c */
 void mpeg2_cpu_state_init (uint32_t accel);
@@ -262,7 +271,9 @@ mpeg2_state_t mpeg2_header_end (mpeg2dec_t * mpeg2dec);
 void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type);
 
 /* idct.c */
-void mpeg2_idct_init (uint32_t accel);
+extern void mpeg2_idct_init (uint32_t accel);
+extern uint8_t mpeg2_scan_norm[64];
+extern uint8_t mpeg2_scan_alt[64];
 
 /* idct_mmx.c */
 void mpeg2_idct_copy_sse2 (int16_t * block, uint8_t * dest, int stride);
@@ -315,3 +326,5 @@ extern mpeg2_mc_t mpeg2_mc_alpha;
 extern mpeg2_mc_t mpeg2_mc_vis;
 extern mpeg2_mc_t mpeg2_mc_arm;
 extern mpeg2_mc_t mpeg2_mc_iwmmxt;
+
+#endif /* LIBMPEG2_MPEG2_INTERNAL_H */
diff --git a/libmpeg2/slice.c b/libmpeg2/slice.c
index 4d778a7026..99fcf95c22 100644
--- a/libmpeg2/slice.c
+++ b/libmpeg2/slice.c
@@ -450,7 +450,7 @@ static void get_intra_block_B14 (mpeg2_decoder_t * const decoder,
 	break;	/* illegal, check needed to avoid buffer overflow */
     }
     dest[63] ^= mismatch & 16;
-    DUMPBITS (bit_buf, bits, 2);	/* dump end of block code */
+    DUMPBITS (bit_buf, bits, tab->len);	/* dump end of block code */
     decoder->bitstream_buf = bit_buf;
     decoder->bitstream_bits = bits;
     decoder->bitstream_ptr = bit_ptr;
@@ -508,7 +508,7 @@ static void get_intra_block_B15 (mpeg2_decoder_t * const decoder,
 	    } else {
 
 		/* end of block. I commented out this code because if we */
-		/* dont exit here we will still exit at the later test :) */
+		/* do not exit here we will still exit at the later test :) */
 
 		/* if (i >= 128) break;	*/	/* end of block */
 
@@ -560,7 +560,7 @@ static void get_intra_block_B15 (mpeg2_decoder_t * const decoder,
 	break;	/* illegal, check needed to avoid buffer overflow */
     }
     dest[63] ^= mismatch & 16;
-    DUMPBITS (bit_buf, bits, 4);	/* dump end of block code */
+    DUMPBITS (bit_buf, bits, tab->len);	/* dump end of block code */
     decoder->bitstream_buf = bit_buf;
     decoder->bitstream_bits = bits;
     decoder->bitstream_ptr = bit_ptr;
@@ -681,7 +681,7 @@ static int get_non_intra_block (mpeg2_decoder_t * const decoder,
 	break;	/* illegal, check needed to avoid buffer overflow */
     }
     dest[63] ^= mismatch & 16;
-    DUMPBITS (bit_buf, bits, 2);	/* dump end of block code */
+    DUMPBITS (bit_buf, bits, tab->len);	/* dump end of block code */
     decoder->bitstream_buf = bit_buf;
     decoder->bitstream_bits = bits;
     decoder->bitstream_ptr = bit_ptr;
@@ -799,7 +799,7 @@ static void get_mpeg1_intra_block (mpeg2_decoder_t * const decoder)
 	}
 	break;	/* illegal, check needed to avoid buffer overflow */
     }
-    DUMPBITS (bit_buf, bits, 2);	/* dump end of block code */
+    DUMPBITS (bit_buf, bits, tab->len);	/* dump end of block code */
     decoder->bitstream_buf = bit_buf;
     decoder->bitstream_bits = bits;
     decoder->bitstream_ptr = bit_ptr;
@@ -926,7 +926,7 @@ static int get_mpeg1_non_intra_block (mpeg2_decoder_t * const decoder)
 	}
 	break;	/* illegal, check needed to avoid buffer overflow */
     }
-    DUMPBITS (bit_buf, bits, 2);	/* dump end of block code */
+    DUMPBITS (bit_buf, bits, tab->len);	/* dump end of block code */
     decoder->bitstream_buf = bit_buf;
     decoder->bitstream_bits = bits;
     decoder->bitstream_ptr = bit_ptr;
@@ -1569,18 +1569,24 @@ do {								\
 
 #define NEXT_MACROBLOCK							\
 do {									\
-    if(decoder->quant_store) {                                          \
-       if (decoder->picture_structure == TOP_FIELD)                     \
-        decoder->quant_store[2*decoder->quant_stride*(decoder->v_offset>>4) \
-                    +(decoder->offset>>4)] = decoder->quantizer_scale;  \
-       else if (decoder->picture_structure == BOTTOM_FIELD)             \
-        decoder->quant_store[2*decoder->quant_stride*(decoder->v_offset>>4) \
-	            + decoder->quant_stride                             \
-                    +(decoder->offset>>4)] = decoder->quantizer_scale;  \
-       else                                                             \
-        decoder->quant_store[decoder->quant_stride*(decoder->v_offset>>4) \
-                    +(decoder->offset>>4)] = decoder->quantizer_scale;  \
-    }                                                                   \
+    if(decoder->quant_store) {						\
+	if (decoder->picture_structure == TOP_FIELD)			\
+	    decoder->quant_store[2 * decoder->quant_stride		\
+				 * (decoder->v_offset >> 4)		\
+				 + (decoder->offset >> 4)]		\
+		= decoder->quantizer_scale;				\
+	else if (decoder->picture_structure == BOTTOM_FIELD)		\
+	    decoder->quant_store[2 * decoder->quant_stride		\
+				 * (decoder->v_offset >> 4)		\
+				 + decoder->quant_stride		\
+				 + (decoder->offset >> 4)]		\
+		= decoder->quantizer_scale;				\
+	else								\
+	    decoder->quant_store[decoder->quant_stride			\
+				 * (decoder->v_offset >> 4)		\
+				 + (decoder->offset >> 4)]		\
+		= decoder->quantizer_scale;				\
+    }									\
     decoder->offset += 16;						\
     if (decoder->offset == decoder->width) {				\
 	do { /* just so we can use the break statement */		\
@@ -1604,6 +1610,10 @@ do {									\
     }									\
 } while (0)
 
+/**
+ * Dummy motion decoding function, to avoid calling NULL in
+ * case of malformed streams.
+ */
 static void motion_dummy (mpeg2_decoder_t * const decoder,
                           motion_t * const motion,
                           mpeg2_mc_fct * const * const table)
@@ -1668,7 +1678,7 @@ void mpeg2_init_fbuf (mpeg2_decoder_t * decoder, uint8_t * current_fbuf[3],
     if (decoder->mpeg1) {
 	decoder->motion_parser[0] = motion_zero_420;
         decoder->motion_parser[MC_FIELD] = motion_dummy;
-	decoder->motion_parser[MC_FRAME] = motion_mp1;
+ 	decoder->motion_parser[MC_FRAME] = motion_mp1;
         decoder->motion_parser[MC_DMV] = motion_dummy;
 	decoder->motion_parser[4] = motion_reuse_420;
     } else if (decoder->picture_structure == FRAME_PICTURE) {
@@ -1894,6 +1904,14 @@ void mpeg2_slice (mpeg2_decoder_t * const decoder, const int code,
 
 	    motion_parser_t * parser;
 
+	    if (   ((macroblock_modes >> MOTION_TYPE_SHIFT) < 0)
+                || ((macroblock_modes >> MOTION_TYPE_SHIFT) >=
+                    (int)(sizeof(decoder->motion_parser) 
+                          / sizeof(decoder->motion_parser[0])))
+	       ) {
+		break; // Illegal !
+	    }
+
 	    parser =
 		decoder->motion_parser[macroblock_modes >> MOTION_TYPE_SHIFT];
 	    MOTION_CALL (parser, macroblock_modes);
diff --git a/libmpeg2/vis.h b/libmpeg2/vis.h
index 69dd49075b..8324c3eb2e 100644
--- a/libmpeg2/vis.h
+++ b/libmpeg2/vis.h
@@ -41,6 +41,9 @@
  * the assembler to keep the binary from becoming tainted.
  */
 
+#ifndef LIBMPEG2_VIS_H
+#define LIBMPEG2_VIS_H
+
 #define vis_opc_base	((0x1 << 31) | (0x36 << 19))
 #define vis_opf(X)	((X) << 5)
 #define vis_sreg(X)	(X)
@@ -326,3 +329,5 @@ static inline void vis_alignaddrl_g0(void *_ptr)
 /* Pixel component distance.  */
 
 #define vis_pdist(rs1,rs2,rd)		vis_dd2d(0x3e, rs1, rs2, rd)
+
+#endif /* LIBMPEG2_VIS_H */
diff --git a/libmpeg2/vlc.h b/libmpeg2/vlc.h
index 7098ee0f9b..b3a868e54b 100644
--- a/libmpeg2/vlc.h
+++ b/libmpeg2/vlc.h
@@ -21,6 +21,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#ifndef LIBMPEG2_VLC_H
+#define LIBMPEG2_VLC_H
+
 #define GETWORD(bit_buf,shift,bit_ptr)				\
 do {								\
     bit_buf |= ((bit_ptr[0] << 8) | bit_ptr[1]) << (shift);	\
@@ -121,7 +124,7 @@ static const MBtab MB_P [] = {
 #define INTER MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD
 
 static const MBtab MB_B [] = {
-    {0,                 0}, {INTRA|QUANT,       6},
+    {0,                 6}, {INTRA|QUANT,       6},
     {BWD|CODED|QUANT,   6}, {FWD|CODED|QUANT,   6},
     {INTER|CODED|QUANT, 5}, {INTER|CODED|QUANT, 5},
 					{INTRA,       5}, {INTRA,       5},
@@ -201,7 +204,7 @@ static const CBPtab CBP_7 [] = {
 };
 
 static const CBPtab CBP_9 [] = {
-    {0,    0}, {0x00, 9}, {0x39, 9}, {0x36, 9},
+    {0,    9}, {0x00, 9}, {0x39, 9}, {0x36, 9},
     {0x37, 9}, {0x3b, 9}, {0x3d, 9}, {0x3e, 9},
     {0x17, 8}, {0x17, 8}, {0x1b, 8}, {0x1b, 8},
     {0x1d, 8}, {0x1d, 8}, {0x1e, 8}, {0x1e, 8},
@@ -289,7 +292,7 @@ static const DCTtab DCT_B14_10 [] = {
 };
 
 static const DCTtab DCT_B14_8 [] = {
-    { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6},
+    { 65, 0,12}, { 65, 0,12}, { 65, 0,12}, { 65, 0,12},
     {  3, 2, 7}, {  3, 2, 7}, { 10, 1, 7}, { 10, 1, 7},
     {  1, 4, 7}, {  1, 4, 7}, {  9, 1, 7}, {  9, 1, 7},
     {  8, 1, 6}, {  8, 1, 6}, {  8, 1, 6}, {  8, 1, 6},
@@ -326,7 +329,7 @@ static const DCTtab DCT_B15_10 [] = {
 };
 
 static const DCTtab DCT_B15_8 [] = {
-    { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6},
+    { 65, 0,12}, { 65, 0,12}, { 65, 0,12}, { 65, 0,12},
     {  8, 1, 7}, {  8, 1, 7}, {  9, 1, 7}, {  9, 1, 7},
     {  7, 1, 7}, {  7, 1, 7}, {  3, 2, 7}, {  3, 2, 7},
     {  1, 7, 6}, {  1, 7, 6}, {  1, 7, 6}, {  1, 7, 6},
@@ -427,3 +430,5 @@ static const MBAtab MBA_11 [] = {
     { 7,  7}, { 7,  7}, { 7,  7}, { 7,  7},
     { 7,  7}, { 7,  7}, { 7,  7}, { 7,  7}
 };
+
+#endif /* LIBMPEG2_VLC_H */