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-rw-r--r--attic/muse2-oom/muse2/al/dsp.cpp182
1 files changed, 182 insertions, 0 deletions
diff --git a/attic/muse2-oom/muse2/al/dsp.cpp b/attic/muse2-oom/muse2/al/dsp.cpp
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+++ b/attic/muse2-oom/muse2/al/dsp.cpp
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+//=============================================================================
+// AL
+// Audio Utility Library
+// $Id: dsp.cpp,v 1.1.2.1 2009/12/06 01:39:33 terminator356 Exp $
+//
+// Copyright (C) 2002-2006 by Werner Schweer and others
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2.
+//
+// This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#include <stdio.h>
+#include <stdint.h>
+#include "dsp.h"
+#include "config.h"
+#include "../globals.h"
+
+namespace AL {
+
+Dsp* dsp = 0;
+
+#ifdef __i386__
+
+//---------------------------------------------------------
+// DspSSE86
+//---------------------------------------------------------
+
+extern "C" {
+extern float x86_sse_compute_peak(float*, unsigned, float);
+extern void x86_sse_apply_gain_to_buffer(float*, unsigned, float);
+extern void x86_sse_mix_buffers_with_gain(float*, float*, unsigned, float);
+extern void x86_sse_mix_buffers_no_gain(float*, float*, unsigned);
+ };
+
+class DspSSE86 : public Dsp {
+ public:
+ DspSSE86() {}
+ virtual ~DspSSE86() {}
+
+ virtual float peak(float* buf, unsigned n, float current) {
+ if ( ((intptr_t)buf % 16) != 0) {
+ fprintf(stderr, "peak(): buffer unaligned! (%p)\n", buf);
+ return Dsp::peak(buf, n, current);
+ }
+ return x86_sse_compute_peak(buf, n, current);
+ }
+
+ virtual void applyGainToBuffer(float* buf, unsigned n, float gain) {
+ if ( ((intptr_t)buf % 16) != 0) {
+ fprintf(stderr, "applyGainToBuffer(): buffer unaligned! (%p)\n", buf);
+ Dsp::applyGainToBuffer(buf, n, gain);
+ }
+ else
+ x86_sse_apply_gain_to_buffer(buf, n, gain);
+ }
+
+ virtual void mixWithGain(float* dst, float* src, unsigned n, float gain) {
+ if ( ((intptr_t)dst & 15) != 0)
+ fprintf(stderr, "mixWithGainain(): dst unaligned! (%p)\n", dst);
+ if (((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
+ fprintf(stderr, "mixWithGain(): dst & src don't have the same alignment!\n");
+ Dsp::mixWithGain(dst, src,n, gain);
+ }
+ else
+ x86_sse_mix_buffers_with_gain(dst, src, n, gain);
+ }
+ virtual void mix(float* dst, float* src, unsigned n) {
+ if ( ((intptr_t)dst & 15) != 0)
+ fprintf(stderr, "mix_buffers_no_gain(): dst unaligned! %p\n", dst);
+ if ( ((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
+ fprintf(stderr, "mix_buffers_no_gain(): dst & src don't have the same alignment!\n");
+ Dsp::mix(dst, src, n);
+ }
+ else
+ x86_sse_mix_buffers_no_gain(dst, src, n);
+ }
+ };
+#endif
+
+//---------------------------------------------------------
+// initDsp
+//---------------------------------------------------------
+
+void initDsp()
+ {
+#if 0 // Disabled for now.
+#if defined(__i386__) || defined(__x86_64__)
+ if(debugMsg)
+ printf("Muse: __i386__ or __x86_64__ defined. Using optimized float buffer copying (asm movsl).\n");
+#else
+ if(debugMsg)
+ printf("Muse: __i386__ or __x86_64__ not defined. Using non-optimized memcpy for float buffer copying.\n");
+#endif
+#endif
+
+#if defined(__i386__) && defined(USE_SSE)
+ unsigned long useSSE = 0;
+ if(debugMsg)
+ printf("initDsp: __i386__ and USE_SSE defined\n");
+
+// FIXME: 64? Shouldn't these routines work on 32 bit?
+#ifdef __x86_64__
+ useSSE = 1 << 25; // we know the platform has SSE
+ if(debugMsg)
+ printf("initDsp: __x86_64__ defined\n");
+#else
+ if(debugMsg)
+ printf("initDsp: getting cpuid via asm\n");
+ asm (
+ "mov $1, %%eax\n"
+ "pushl %%ebx\n"
+ "cpuid\n"
+ "movl %%edx, %0\n"
+ "popl %%ebx\n"
+ : "=r" (useSSE)
+ :
+ : "%eax", "%ecx", "%edx", "memory");
+#endif
+ if(debugMsg)
+ printf("initDsp: checking for bit 25 SSE support:%lX\n", useSSE);
+ useSSE &= (1 << 25); // bit 25 = SSE support
+ if (useSSE) {
+ printf("Using SSE optimized routines\n");
+ dsp = new DspSSE86();
+ return;
+ }
+ // fall through to not hardware optimized routines
+#endif
+ if(debugMsg)
+ printf("Muse: using unoptimized non-SSE dsp routines\n");
+ dsp = new Dsp();
+ }
+
+//---------------------------------------------------------
+// exitDsp
+//---------------------------------------------------------
+
+void exitDsp()
+{
+ if(dsp)
+ delete dsp;
+ dsp = 0;
+}
+
+void Dsp::cpy(float* dst, float* src, unsigned n)
+{
+// FIXME: Changed by T356. Not defined. Where are these???
+//#if defined(ARCH_X86) || defined(ARCH_X86_64)
+///#if defined(__i386__) || defined(__x86_64__)
+#if 0 // Disabled for now.
+ //printf("Dsp: using asm cpy\n");
+ // Changed by T356. Get To and From not declared in scope compile errors.
+ //register unsigned long int dummy;
+ //__asm__ __volatile__ ("rep; movsl" :"=&D"(dst), "=&S"(src), "=&c"(dummy) :"0" (to), "1" (from),"2" (n) : "memory");
+ // FIXME: FIXME: I don't think this is correct but it works so far...
+ // Tried clobbering, get "Can't find a register in class `CREG' while reloading `asm'"
+ __asm__ __volatile__ (
+ "cld\n\t"
+ "rep\n\t"
+ "movsl"
+ :
+ : "S" (src), "D" (dst), "c" (n)
+ : "memory"
+ );
+
+ //: "%ecx", "%esi", "%edi", "memory"
+#else
+ //printf("Dsp: using memcpy\n");
+ memcpy(dst, src, sizeof(float) * n);
+#endif
+}
+
+} // namespace AL