annotate src/audio/SDL_mixer_MMX.c @ 1019:e3b3130f3af8

Date: Fri, 31 Dec 2004 04:14:09 +0900 From: Hayashi Naoyuki Subject: SDL patch for Tru64 UNIX 4.0X SDL-1.2.8 support only Tru64 5.X. This patch is for Tru64 UNIX 4.X.(tested on Tru64 UNIX 4.0G and 5.1B) SDL-1.2.8/configure.in: ld doesn't accept -pthread option. cc -pthread has same effect as -D_REENTRANT when compiling, and has same effect as -lpthread -lexc when linking. SDL-1.2.8/include/begin_code.h: Old Compaq C Compiler accept not inline but __inline. SDL-1.2.8/src/audio/SDL_mixer_MMX.c: SDL-1.2.8/src/audio/SDL_mixer_MMX.h: Old Compaq C Compiler doesn't accept //. SDL-1.2.8/src/cdrom/osf/SDL_syscdrom.c: When becoming Tru64 v5.0 from Tru64 v4.0, the arrangement of the cd-rom device was changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 02 Jan 2005 05:05:21 +0000
parents b4b64bb88f2f
children b580f7201543
rev   line source
1019
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
1 /*
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
2 MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
3 Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
4 This code is licensed under the LGPL (see COPYING for details)
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
5
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
6 Assumes buffer size in bytes is a multiple of 16
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
7 Assumes SDL_MIX_MAXVOLUME = 128
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
8 */
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10
1019
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
11 /***********************************************
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
12 * Mixing for 16 bit signed buffers
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
Sam Lantinga <slouken@libsdl.org>
parents: 887
diff changeset
13 ***********************************************/
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
15 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
16 void SDL_MixAudio_MMX_S16(char* dst,char* src,unsigned int size,int volume)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
17 {
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18 __asm__ __volatile__ (
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 " movl %3,%%eax\n" // eax = volume
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
22 " movl %2,%%edx\n" // edx = size
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
24 " shrl $4,%%edx\n" // process 16 bytes per iteration = 8 samples
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 " jz .endS16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28 " pxor %%mm0,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
30 " movd %%eax,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31 " movq %%mm0,%%mm1\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 " por %%mm1,%%mm0\n" // mm0 = vol|vol|vol|vol
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
38
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39 ".align 16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40 " .mixloopS16:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
42 " movq (%1),%%mm1\n" // mm1 = a|b|c|d
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44 " movq %%mm1,%%mm2\n" // mm2 = a|b|c|d
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
46 " movq 8(%1),%%mm4\n" // mm4 = e|f|g|h
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48 // pré charger le buffer dst dans mm7
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
49 " movq (%0),%%mm7\n" // mm7 = dst[0]"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51 // multiplier par le volume
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 " pmullw %%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54 " pmulhw %%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 " movq %%mm4,%%mm5\n" // mm5 = e|f|g|h
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57 " pmullw %%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 " pmulhw %%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 " movq %%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
61
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62 " punpckhwd %%mm2,%%mm1\n" // mm1 = a*v|b*v
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 " movq %%mm4,%%mm6\n" // mm6 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65 " punpcklwd %%mm2,%%mm3\n" // mm3 = c*v|d*v
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 " punpckhwd %%mm5,%%mm4\n" // mm4 = e*f|f*v
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 " punpcklwd %%mm5,%%mm6\n" // mm6 = g*v|h*v
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
70
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71 // pré charger le buffer dst dans mm5
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
72 " movq 8(%0),%%mm5\n" // mm5 = dst[1]
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74 // diviser par 128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
75 " psrad $7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
76 " add $16,%1\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
77
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
78 " psrad $7,%%mm3\n" // mm3 = c*v/128|d*v/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
79
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
80 " psrad $7,%%mm4\n" // mm4 = e*v/128|f*v/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
81
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
82 // mm1 = le sample avec le volume modifié
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
83 " packssdw %%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
84
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
85 " psrad $7,%%mm6\n" // mm6= g*v/128|h*v/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86 " paddsw %%mm7,%%mm3\n" // mm3 = adjust_volume(src)+dst
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
87
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
88 // mm4 = le sample avec le volume modifié
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
89 " packssdw %%mm4,%%mm6\n" // mm6 = s(e*v|f*v|g*v|h*v)
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
90 " movq %%mm3,(%0)\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
91
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
92 " paddsw %%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
93
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
94 " movq %%mm6,8(%0)\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
95
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
96 " add $16,%0\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
97
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
98 " dec %%edx\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
99
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100 " jnz .mixloopS16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 " emms\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
103
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104 ".endS16:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
105 :
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
106 : "r" (dst), "r"(src),"m"(size),
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
107 "m"(volume)
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
108 : "eax","edx","memory"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
109 );
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
110 }
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
112
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
113
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
114 ////////////////////////////////////////////////
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
115 // Mixing for 8 bit signed buffers
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 ////////////////////////////////////////////////
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 void SDL_MixAudio_MMX_S8(char* dst,char* src,unsigned int size,int volume)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
119 {
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
120 __asm__ __volatile__ (
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 " movl %3,%%eax\n" // eax = volume
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
123
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
124 " movd %%edx,%%mm0\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
125 " movq %%mm0,%%mm1\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
126 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
127 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
128 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
129 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
130 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
132
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
133 " movl %2,%%edx\n" // edx = size
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
134 " shr $3,%%edx\n" // process 8 bytes per iteration = 8 samples
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
136 " cmp $0,%%edx\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 " je .endS8\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 ".align 16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 " .mixloopS8:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 " pxor %%mm2,%%mm2\n" // mm2 = 0
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
143 " movq (%1),%%mm1\n" // mm1 = a|b|c|d|e|f|g|h
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 " movq %%mm1,%%mm3\n" // mm3 = a|b|c|d|e|f|g|h
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 // on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 " pcmpgtb %%mm1,%%mm2\n" // mm2 = 11111111|00000000|00000000....
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 " punpckhbw %%mm2,%%mm1\n" // mm1 = 0|a|0|b|0|c|0|d
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 " punpcklbw %%mm2,%%mm3\n" // mm3 = 0|e|0|f|0|g|0|h
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
153 " movq (%0),%%mm2\n" // mm2 = destination
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 " pmullw %%mm0,%%mm1\n" // mm1 = v*a|v*b|v*c|v*d
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
156 " add $8,%1\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 " pmullw %%mm0,%%mm3\n" // mm3 = v*e|v*f|v*g|v*h
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 " psraw $7,%%mm1\n" // mm1 = v*a/128|v*b/128|v*c/128|v*d/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 " psraw $7,%%mm3\n" // mm3 = v*e/128|v*f/128|v*g/128|v*h/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 " packsswb %%mm1,%%mm3\n" // mm1 = v*a/128|v*b/128|v*c/128|v*d/128|v*e/128|v*f/128|v*g/128|v*h/128
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 " paddsb %%mm2,%%mm3\n" // add to destination buffer
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
167 " movq %%mm3,(%0)\n" // store back to ram
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
168 " add $8,%0\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
170 " dec %%edx\n"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 " jnz .mixloopS8\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 ".endS8:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 " emms\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 :
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
177 : "r" (dst), "r"(src),"m"(size),
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 "m"(volume)
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 539
diff changeset
179 : "eax","edx","memory"
539
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 );
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 }
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 #endif
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183