Add mpg123 1.8.1 source

Change-Id: I602e744b1e24d95e203c05b0e93d15d373a45639

1 files changed, 211 insertions, 0 deletions

diff --git a/src/libmpg123/optimize.h b/src/libmpg123/optimize.h
new file mode 100644
index 0000000..f3b167f
--- /dev/null
+++ b/src/libmpg123/optimize.h
@@ -0,0 +1,211 @@
+#ifndef MPG123_H_OPTIMIZE
+#define MPG123_H_OPTIMIZE
+/*
+	optimize: get a grip on the different optimizations
+
+	copyright 2007 by the mpg123 project - free software under the terms of the LGPL 2.1
+	see COPYING and AUTHORS files in distribution or http://mpg123.org
+	initially written by Thomas Orgis, taking from mpg123.[hc]
+
+	for building mpg123 with one optimization only, you have to choose exclusively between
+	OPT_GENERIC (generic C code for everyone)
+	OPT_GENERIC_DITHER (same with dithering for 1to1)
+	OPT_I386 (Intel i386)
+	OPT_I486 (Somewhat special code for i486; does not work together with others.)
+	OPT_I586 (Intel Pentium)
+	OPT_I586_DITHER (Intel Pentium with dithering/noise shaping for enhanced quality)
+	OPT_MMX (Intel Pentium and compatibles with MMX, fast, but not the best accuracy)
+	OPT_3DNOW (AMD 3DNow!, K6-2/3, Athlon, compatibles...)
+	OPT_3DNOWEXT (AMD 3DNow! extended, generally Athlon, compatibles...)
+	OPT_ALTIVEC (Motorola/IBM PPC with AltiVec under MacOSX)
+	OPT_X86_64 (x86-64 / AMD64 / Intel 64)
+
+	or you define OPT_MULTI and give a combination which makes sense (do not include i486, do not mix altivec and x86).
+
+	I still have to examine the dynamics of this here together with REAL_IS_FIXED.
+	Basic point is: Don't use REAL_IS_FIXED with something else than generic or i386.
+
+	Also, one should minimize code size by really ensuring that only functions that are really needed are included.
+	Currently, all generic functions will be always there (to be safe for fallbacks for advanced decoders).
+	Strictly, at least the synth_1to1 should not be necessary for single-decoder mode.
+*/
+
+
+/* Runtime optimization interface now here: */
+
+enum optdec
+{ /* autodec needs to be =0 and the first, nodec needs to be the last -- for loops! */
+	autodec=0, generic, generic_dither, idrei,
+	ivier, ifuenf, ifuenf_dither, mmx,
+	dreidnow, dreidnowext, altivec, sse, x86_64,
+	nodec
+};
+enum optcla { nocla=0, normal, mmxsse };
+
+/*  - Set up the table of synth functions for current decoder choice. */
+int frame_cpu_opt(mpg123_handle *fr, const char* cpu);
+/*  - Choose, from the synth table, the synth functions to use for current output format/rate. */
+int set_synth_functions(mpg123_handle *fr);
+/*  - Parse decoder name and return numerical code. */
+enum optdec dectype(const char* decoder);
+/*  - Return the default decoder type. */
+enum optdec defdec(void);
+/*  - Return the class of a decoder type (mmxsse or normal). */
+enum optcla decclass(const enum optdec);
+
+/* Now comes a whole lot of definitions, for multi decoder mode and single decoder mode.
+   Because of the latter, it may look redundant at times. */
+
+/* this is included in mpg123.h, which includes config.h */
+#ifdef CCALIGN
+#define ALIGNED(a) __attribute__((aligned(a)))
+#else
+#define ALIGNED(a)
+#endif
+
+/* Safety catch for invalid decoder choice. */
+#ifdef REAL_IS_FIXED
+#if (defined OPT_I486)  || (defined OPT_I586) || (defined OPT_I586_DITHER) \
+ || (defined OPT_MMX)   || (defined OPT_SSE)  || (defined_OPT_ALTIVEC) \
+ || (defined OPT_3DNOW) || (defined OPT_3DNOWEXT) || (defined OPT_X86_64) || (defined OPT_GENERIC_DITHER)
+#error "Bad decoder choice together with fixed point math!"
+#endif
+#endif
+
+#if (defined NO_LAYER1 && defined NO_LAYER2)
+#define NO_LAYER12
+#endif
+
+#ifdef OPT_GENERIC
+#ifndef OPT_MULTI
+#	define defopt generic
+#endif
+#endif
+
+#ifdef OPT_GENERIC_DITHER
+#define OPT_DITHER
+#ifndef OPT_MULTI
+#	define defopt generic_dither
+#endif
+#endif
+
+/* i486 is special... always alone! */
+#ifdef OPT_I486
+#define OPT_X86
+#define defopt ivier
+#ifdef OPT_MULTI
+#error "i486 can only work alone!"
+#endif
+#define FIR_BUFFER_SIZE  128
+#define FIR_SIZE 16
+#endif
+
+#ifdef OPT_I386
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt idrei
+#endif
+#endif
+
+#ifdef OPT_I586
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt ifuenf
+#endif
+#endif
+
+#ifdef OPT_I586_DITHER
+#define OPT_X86
+#define OPT_DITHER
+#ifndef OPT_MULTI
+#	define defopt ifuenf_dither
+#endif
+#endif
+
+/* We still have some special code around MMX tables. */
+
+#ifdef OPT_MMX
+#define OPT_MMXORSSE
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt mmx
+#endif
+#endif
+
+#ifdef OPT_SSE
+#define OPT_MMXORSSE
+#define OPT_MPLAYER
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt sse
+#endif
+#endif
+
+#ifdef OPT_3DNOWEXT
+#define OPT_MMXORSSE
+#define OPT_MPLAYER
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt dreidnowext
+#	define opt_dct36(fr) dct36_3dnowext
+#endif
+#endif
+
+#ifdef OPT_MPLAYER
+extern const int costab_mmxsse[];
+#endif
+
+/* 3dnow used to use synth_1to1_i586 for mono / 8bit conversion - was that intentional? */
+/* I'm trying to skip the pentium code here ... until I see that that is indeed a bad idea */
+#ifdef OPT_3DNOW
+#define OPT_X86
+#ifndef OPT_MULTI
+#	define defopt dreidnow
+#	define opt_dct36(fr) dct36_3dnow
+#endif
+#endif
+
+#ifdef OPT_ALTIVEC
+#ifndef OPT_MULTI
+#	define defopt altivec
+#endif
+#endif
+
+#ifdef OPT_X86_64
+#define OPT_MMXORSSE
+#ifndef OPT_MULTI
+#	define defopt x86_64
+#endif
+#endif
+
+/* used for multi opt mode and the single 3dnow mode to have the old 3dnow test flag still working */
+void check_decoders(void);
+
+/* Announce the data in dnoise.c ... */
+#ifdef OPT_DITHER
+#define DITHERSIZE 65536
+extern float dithernoise[DITHERSIZE];
+#endif
+
+/*
+	Now come two blocks of standard definitions for multi-decoder mode and single-decoder mode.
+	Most stuff is so automatic that it's indeed generated by some inline shell script.
+	Remember to use these scripts when possible, instead of direct repetitive hacking.
+*/
+
+#ifdef OPT_MULTI
+
+#	define defopt nodec
+
+#	if (defined OPT_3DNOW || defined OPT_3DNOWEXT)
+#		define opt_dct36(fr) ((fr)->cpu_opts.dct36)
+#	endif
+
+#endif /* OPT_MULTI else */
+
+#	ifndef opt_dct36
+#		define opt_dct36(fr) dct36
+#	endif
+
+#endif /* MPG123_H_OPTIMIZE */
+