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

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);
+
+}
+