summaryrefslogtreecommitdiffstats
path: root/noatun/library/noatunarts/StereoVolumeControl_impl.cpp
diff options
context:
space:
mode:
authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /noatun/library/noatunarts/StereoVolumeControl_impl.cpp
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'noatun/library/noatunarts/StereoVolumeControl_impl.cpp')
-rw-r--r--noatun/library/noatunarts/StereoVolumeControl_impl.cpp181
1 files changed, 181 insertions, 0 deletions
diff --git a/noatun/library/noatunarts/StereoVolumeControl_impl.cpp b/noatun/library/noatunarts/StereoVolumeControl_impl.cpp
new file mode 100644
index 00000000..425704f6
--- /dev/null
+++ b/noatun/library/noatunarts/StereoVolumeControl_impl.cpp
@@ -0,0 +1,181 @@
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <artsflow.h>
+#include <stdsynthmodule.h>
+#include <flowsystem.h>
+#include "noatunarts.h"
+
+using namespace Arts;
+
+namespace Noatun
+{
+
+class StereoVolumeControl_impl : virtual public StereoVolumeControl_skel,
+ virtual public StdSynthModule
+{
+ float mPercent;
+ float level;
+public:
+ StereoVolumeControl_impl() : mPercent(1.0), level(0.0)
+ { }
+
+ /*attribute float scaleFactor;*/
+ void percent(float p) { mPercent=p; }
+ float percent() { return mPercent; }
+
+ void calculateBlock(unsigned long samples)
+ {
+ register float *left=inleft;
+ register float *right=inright;
+ register float *oleft=outleft;
+ register float *oright=outright;
+
+ level = *right + *left;
+
+ register float p=mPercent;
+
+ register float *end=left+samples;
+
+ while (left<end)
+ {
+ *oleft=*left * p;
+ *oright=*right * p;
+
+ ++left;
+ ++right;
+ ++oleft;
+ ++oright;
+ }
+ }
+
+ AutoSuspendState autoSuspend()
+ {
+ return (level < 0.001) ? asSuspend : asNoSuspend;
+ }
+};
+
+class StereoVolumeControlSSE_impl : virtual public Noatun::StereoVolumeControlSSE_skel,
+ virtual public StdSynthModule
+{
+ float mPercent;
+ float level;
+
+public:
+ StereoVolumeControlSSE_impl() : mPercent(1.0), level(0.0)
+ { }
+
+ /*attribute float scaleFactor;*/
+ void percent(float p) { mPercent=p; }
+ float percent() { return mPercent; }
+
+ void calculateBlock(unsigned long samples)
+ {
+#ifdef HAVE_X86_SSE
+ float *left=inleft;
+ float *right=inright;
+ float *oleft=outleft;
+ float *oright=outright;
+
+ level = *right + *left;
+
+ // need to copy the data members to locals to get enough
+ // spare registers (malte)
+
+ long p = (long)(mPercent*100.0);
+ __asm__ __volatile__(
+ "pushl $100 \n"
+ "fildl (%%esp) \n"
+#if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
+ "addl $4, %%esp \n"
+#endif
+ "fildl %5 \n"
+ "fdivp \n" // percent / 100.0
+#if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
+ "pushl $100 \n"
+#endif
+ "fstps (%%esp) \n"
+ "movss (%%esp), %%xmm1 \n"
+ "shufps $0x00, %%xmm1, %%xmm1 \n" // percentage in all of xmm1
+ "addl $4, %%esp \n"
+#if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
+ "subl $4, %4 \n"
+ "jl .l2 \n" // samples < 4
+#else
+ "pushl %4 \n" // save sample count
+ "shrl $2, %4 \n"
+ "jz .l2 \n" // samples < 4
+#endif
+ "xorl %%ecx, %%ecx \n"
+
+ ".l1: \n"
+ // left
+ "movups (%0, %%ecx, 8), %%xmm0 \n"
+ "mulps %%xmm1, %%xmm0 \n"
+ "movl %2, %%eax \n"
+ "movups %%xmm0, (%%eax, %%ecx, 8) \n"
+ // right
+ "movups (%1, %%ecx, 8), %%xmm0 \n"
+ "mulps %%xmm1, %%xmm0 \n"
+ "movl %3, %%eax \n"
+ "movups %%xmm0, (%%eax, %%ecx, 8) \n"
+
+ "incl %%ecx \n"
+ "incl %%ecx \n"
+#if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
+ "subl $4, %4 \n"
+ "jge .l1 \n"
+ ".l2: \n"
+ "addl $4, %4 \n"
+#else
+ "decl %4 \n"
+ "jnz .l1 \n"
+ ".l2: \n"
+ "popl %4 \n" // restore sample count
+ "andl $3, %4 \n"
+#endif
+ "jz .l4 \n"
+
+ // calculate remaining samples for samples % 4 != 0
+ "shll $1, %%ecx \n"
+ ".l3: \n"
+ "movss (%0, %%ecx, 4), %%xmm0 \n" // load left
+ "movss (%1, %%ecx, 4), %%xmm2 \n" // load right
+ "shufps $0x00, %%xmm2, %%xmm0 \n" // both channels in xmm0
+ "mulps %%xmm1, %%xmm0 \n"
+ "movl %2, %%eax \n"
+ "movss %%xmm0, (%%eax, %%ecx, 4) \n" // store left
+ "shufps $0x02, %%xmm0, %%xmm0 \n"
+ "movl %3, %%eax \n"
+ "movss %%xmm0, (%%eax, %%ecx, 4) \n" // store right
+ "incl %%ecx \n"
+ "decl %4 \n"
+ "jnz .l3 \n"
+
+ ".l4: \n"
+ "emms \n"
+ :
+ : "r" (left), // %0
+ "r" (right), // %1
+ "m" (oleft), // %2
+ "m" (oright), // %3
+ "r" (samples), // %4
+ "m" (p) // %5
+ : "eax", "ecx"
+ );
+#endif
+ }
+
+ AutoSuspendState autoSuspend()
+ {
+ return (level < 0.001) ? asSuspend : asNoSuspend;
+ }
+};
+
+REGISTER_IMPLEMENTATION(StereoVolumeControlSSE_impl);
+REGISTER_IMPLEMENTATION(StereoVolumeControl_impl);
+
+}
+