Adding mpeg2dec for optional MPEG2 video decoding.

git-svn-id: http://svn.mythtv.org/svn/trunk@5118 7dbf422c-18fa-0310-86e9-fd20926502f2

mythtv/libs/libmythmpeg2/alloc.c

@@ -0,0 +1,70 @@
+/*
+ * alloc.c
+ * Copyright (C) 2000-2003 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.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "mpeg2.h"
+
+static void * (* malloc_hook) (unsigned size, mpeg2_alloc_t reason) = NULL;
+static int (* free_hook) (void * buf) = NULL;
+
+void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason)
+{
+    char * buf;
+
+    if (malloc_hook) {
+	buf = (char *) malloc_hook (size, reason);
+	if (buf)
+	    return buf;
+    }
+
+    if (size) {
+	buf = (char *) malloc (size + 63 + sizeof (void **));
+	if (buf) {
+	    char * align_buf;
+
+	    align_buf = buf + 63 + sizeof (void **);
+	    align_buf -= (long)align_buf & 63;
+	    *(((void **)align_buf) - 1) = buf;
+	    return align_buf;
+	}
+    }
+    return NULL;
+}
+
+void mpeg2_free (void * buf)
+{
+    if (free_hook && free_hook (buf))
+	return;
+
+    if (buf)
+	free (*(((void **)buf) - 1));
+}
+
+void mpeg2_malloc_hooks (void * malloc (unsigned, mpeg2_alloc_t),
+			 int free (void *))
+{
+    malloc_hook = malloc;
+    free_hook = free;
+}

mythtv/libs/libmythmpeg2/alpha_asm.h

@@ -0,0 +1,181 @@
+/*
+ * Alpha assembly macros
+ * Copyright (c) 2002-2003 Falk Hueffner <falk@debian.org>
+ *
+ * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307	 USA
+ */
+
+#ifndef ALPHA_ASM_H
+#define ALPHA_ASM_H
+
+#include <inttypes.h>
+
+#if defined __GNUC__
+# define GNUC_PREREQ(maj, min) \
+        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define GNUC_PREREQ(maj, min) 0
+#endif
+
+#define AMASK_BWX (1 << 0)
+#define AMASK_FIX (1 << 1)
+#define AMASK_CIX (1 << 2)
+#define AMASK_MVI (1 << 8)
+
+#ifdef __alpha_bwx__
+# define HAVE_BWX() 1
+#else
+# define HAVE_BWX() (amask(AMASK_BWX) == 0)
+#endif
+#ifdef __alpha_fix__
+# define HAVE_FIX() 1
+#else
+# define HAVE_FIX() (amask(AMASK_FIX) == 0)
+#endif
+#ifdef __alpha_max__
+# define HAVE_MVI() 1
+#else
+# define HAVE_MVI() (amask(AMASK_MVI) == 0)
+#endif
+#ifdef __alpha_cix__
+# define HAVE_CIX() 1
+#else
+# define HAVE_CIX() (amask(AMASK_CIX) == 0)
+#endif
+
+inline static uint64_t BYTE_VEC(uint64_t x)
+{
+    x |= x <<  8;
+    x |= x << 16;
+    x |= x << 32;
+    return x;
+}
+inline static uint64_t WORD_VEC(uint64_t x)
+{
+    x |= x << 16;
+    x |= x << 32;
+    return x;
+}
+
+#define ldq(p) (*(const uint64_t *) (p))
+#define ldl(p) (*(const int32_t *) (p))
+#define stl(l, p) do { *(uint32_t *) (p) = (l); } while (0)
+#define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)
+#define sextw(x) ((int16_t) (x))
+
+#ifdef __GNUC__
+struct unaligned_long { uint64_t l; } __attribute__((packed));
+#define ldq_u(p)     (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))
+#define uldq(a)	     (((const struct unaligned_long *) (a))->l)
+
+#if GNUC_PREREQ(3,3)
+#define prefetch(p)     __builtin_prefetch((p), 0, 1)
+#define prefetch_en(p)  __builtin_prefetch((p), 0, 0)
+#define prefetch_m(p)   __builtin_prefetch((p), 1, 1)
+#define prefetch_men(p) __builtin_prefetch((p), 1, 0)
+#define cmpbge	__builtin_alpha_cmpbge
+/* Avoid warnings.  */
+#define extql(a, b)	__builtin_alpha_extql(a, (uint64_t) (b))
+#define extwl(a, b)	__builtin_alpha_extwl(a, (uint64_t) (b))
+#define extqh(a, b)	__builtin_alpha_extqh(a, (uint64_t) (b))
+#define zap	__builtin_alpha_zap
+#define zapnot	__builtin_alpha_zapnot
+#define amask	__builtin_alpha_amask
+#define implver	__builtin_alpha_implver
+#define rpcc	__builtin_alpha_rpcc
+#else
+#define prefetch(p)     asm volatile("ldl $31,%0"  : : "m"(*(const char *) (p)) : "memory")
+#define prefetch_en(p)  asm volatile("ldq $31,%0"  : : "m"(*(const char *) (p)) : "memory")
+#define prefetch_m(p)   asm volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")
+#define prefetch_men(p) asm volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")
+#define cmpbge(a, b) ({ uint64_t __r; asm ("cmpbge  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define extql(a, b)  ({ uint64_t __r; asm ("extql   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define extwl(a, b)  ({ uint64_t __r; asm ("extwl   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define extqh(a, b)  ({ uint64_t __r; asm ("extqh   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define zap(a, b)    ({ uint64_t __r; asm ("zap     %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define zapnot(a, b) ({ uint64_t __r; asm ("zapnot  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
+#define amask(a)     ({ uint64_t __r; asm ("amask   %1,%0"      : "=r" (__r) : "rI"  (a));	     __r; })
+#define implver()    ({ uint64_t __r; asm ("implver %0"         : "=r" (__r));			     __r; })
+#define rpcc()	     ({ uint64_t __r; asm volatile ("rpcc %0"   : "=r" (__r));			     __r; })
+#endif
+#define wh64(p) asm volatile("wh64 (%0)" : : "r"(p) : "memory")
+
+#if GNUC_PREREQ(3,3) && defined(__alpha_max__)
+#define minub8	__builtin_alpha_minub8
+#define minsb8	__builtin_alpha_minsb8
+#define minuw4	__builtin_alpha_minuw4
+#define minsw4	__builtin_alpha_minsw4
+#define maxub8	__builtin_alpha_maxub8
+#define maxsb8	__builtin_alpha_maxsb8
+#define maxuw4	__builtin_alpha_maxuw4	
+#define maxsw4	__builtin_alpha_maxsw4
+#define perr	__builtin_alpha_perr
+#define pklb	__builtin_alpha_pklb
+#define pkwb	__builtin_alpha_pkwb
+#define unpkbl	__builtin_alpha_unpkbl
+#define unpkbw	__builtin_alpha_unpkbw
+#else
+#define minub8(a, b) ({ uint64_t __r; asm (".arch ev6; minub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define minsb8(a, b) ({ uint64_t __r; asm (".arch ev6; minsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define minuw4(a, b) ({ uint64_t __r; asm (".arch ev6; minuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define minsw4(a, b) ({ uint64_t __r; asm (".arch ev6; minsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define maxub8(a, b) ({ uint64_t __r; asm (".arch ev6; maxub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define maxsb8(a, b) ({ uint64_t __r; asm (".arch ev6; maxsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define maxuw4(a, b) ({ uint64_t __r; asm (".arch ev6; maxuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define maxsw4(a, b) ({ uint64_t __r; asm (".arch ev6; maxsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
+#define perr(a, b)   ({ uint64_t __r; asm (".arch ev6; perr    %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })
+#define pklb(a)      ({ uint64_t __r; asm (".arch ev6; pklb    %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })
+#define pkwb(a)      ({ uint64_t __r; asm (".arch ev6; pkwb    %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })
+#define unpkbl(a)    ({ uint64_t __r; asm (".arch ev6; unpkbl  %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })
+#define unpkbw(a)    ({ uint64_t __r; asm (".arch ev6; unpkbw  %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })
+#endif
+
+#elif defined(__DECC)		/* Digital/Compaq/hp "ccc" compiler */
+
+#include <c_asm.h>
+#define ldq_u(a)     asm ("ldq_u   %v0,0(%a0)", a)
+#define uldq(a)	     (*(const __unaligned uint64_t *) (a))
+#define cmpbge(a, b) asm ("cmpbge  %a0,%a1,%v0", a, b)
+#define extql(a, b)  asm ("extql   %a0,%a1,%v0", a, b)
+#define extwl(a, b)  asm ("extwl   %a0,%a1,%v0", a, b)
+#define extqh(a, b)  asm ("extqh   %a0,%a1,%v0", a, b)
+#define zap(a, b)    asm ("zap     %a0,%a1,%v0", a, b)
+#define zapnot(a, b) asm ("zapnot  %a0,%a1,%v0", a, b)
+#define amask(a)     asm ("amask   %a0,%v0", a)
+#define implver()    asm ("implver %v0")
+#define rpcc()	     asm ("rpcc	   %v0")
+#define minub8(a, b) asm ("minub8  %a0,%a1,%v0", a, b)
+#define minsb8(a, b) asm ("minsb8  %a0,%a1,%v0", a, b)
+#define minuw4(a, b) asm ("minuw4  %a0,%a1,%v0", a, b)
+#define minsw4(a, b) asm ("minsw4  %a0,%a1,%v0", a, b)
+#define maxub8(a, b) asm ("maxub8  %a0,%a1,%v0", a, b)
+#define maxsb8(a, b) asm ("maxsb8  %a0,%a1,%v0", a, b)
+#define maxuw4(a, b) asm ("maxuw4  %a0,%a1,%v0", a, b)
+#define maxsw4(a, b) asm ("maxsw4  %a0,%a1,%v0", a, b)
+#define perr(a, b)   asm ("perr    %a0,%a1,%v0", a, b)
+#define pklb(a)      asm ("pklb    %a0,%v0", a)
+#define pkwb(a)      asm ("pkwb    %a0,%v0", a)
+#define unpkbl(a)    asm ("unpkbl  %a0,%v0", a)
+#define unpkbw(a)    asm ("unpkbw  %a0,%v0", a)
+#define wh64(a)      asm ("wh64    %a0", a)
+
+#else
+#error "Unknown compiler!"
+#endif
+
+#endif /* ALPHA_ASM_H */

mythtv/libs/libmythmpeg2/attributes.h

@@ -0,0 +1,37 @@
+/*
+ * attributes.h
+ * Copyright (C) 2000-2003 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.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* 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)))
+#else
+#define ATTR_ALIGN(align)
+#endif
+
+#ifdef HAVE_BUILTIN_EXPECT
+#define likely(x) __builtin_expect ((x) != 0, 1)
+#define unlikely(x) __builtin_expect ((x) != 0, 0)
+#else
+#define likely(x) (x)
+#define unlikely(x) (x)
+#endif

mythtv/libs/libmythmpeg2/config.h

@@ -0,0 +1,23 @@
+/* Include config options from main configure script.         */
+#include "../../config.h"
+
+/* Enable CPU-specific optimizations.                         */
+#define ACCEL_DETECT
+
+/* The __builtin_expect function is used where available      */
+/* (GCC 2.96.x and above).                                    */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 95)
+#define HAVE_BUILTIN_EXPECT
+#endif
+
+/* Translate avcodec's ARCH_POWERPC into mpeg2's ARCH_PPC.    */
+#ifdef ARCH_POWERPC
+#define ARCH_PPC
+#endif
+
+/* Some detection code needs to know the return type of a     */
+/* signal handler.                                            */
+#define RETSIGTYPE void
+
+/* Set the maximum alignment for variables.                   */
+#define ATTRIBUTE_ALIGNED_MAX 64