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audiooutpututil.cpp
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audiooutpututil.cpp
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#include <math.h>
using namespace std;
#include "mythconfig.h"
#include "audiooutpututil.h"
#define LOC QString("AO: ")
#define LOC_ERR QString("AO, ERROR: ")
#if ARCH_X86
static int has_sse2 = -1;
// Check cpuid for SSE2 support on x86 / x86_64
static inline bool sse_check()
{
if (has_sse2 != -1)
return (bool)has_sse2;
__asm__(
// -fPIC - we may not clobber ebx/rbx
#if ARCH_X86_64
"push %%rbx \n\t"
#else
"push %%ebx \n\t"
#endif
"mov $1, %%eax \n\t"
"cpuid \n\t"
"and $0x4000000, %%edx \n\t"
"shr $26, %%edx \n\t"
#if ARCH_X86_64
"pop %%rbx \n\t"
#else
"pop %%ebx \n\t"
#endif
:"=d"(has_sse2)
::"%eax","%ecx"
);
return (bool)has_sse2;
}
#endif //ARCH_x86
#if !HAVE_LRINTF
static av_always_inline av_const long int lrintf(float x)
{
return (int)(rint(x));
}
#endif /* HAVE_LRINTF */
static inline float clipcheck(float f) {
if (f > 1.0f) f = 1.0f;
else if (f < -1.0f) f = -1.0f;
return f;
}
/*
All toFloat variants require 16 byte aligned input and output buffers on x86
The SSE code processes 16 bytes at a time and leaves any remainder for the C
- there is no remainder in practice */
static int toFloat8(float *out, uchar *in, int len)
{
int i = 0;
float f = 1.0f / ((1<<7) - 1);
#if ARCH_X86
if (sse_check() && len >= 16)
{
int loops = len >> 4;
i = loops << 4;
int a = 0x80808080;
__asm__ volatile (
"movd %3, %%xmm0 \n\t"
"movd %4, %%xmm7 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"movdqa (%1), %%xmm1 \n\t"
"xorpd %%xmm2, %%xmm2 \n\t"
"xorpd %%xmm3, %%xmm3 \n\t"
"psubb %%xmm0, %%xmm1 \n\t"
"xorpd %%xmm4, %%xmm4 \n\t"
"punpcklbw %%xmm1, %%xmm2 \n\t"
"xorpd %%xmm5, %%xmm5 \n\t"
"punpckhbw %%xmm1, %%xmm3 \n\t"
"punpcklwd %%xmm2, %%xmm4 \n\t"
"xorpd %%xmm6, %%xmm6 \n\t"
"punpckhwd %%xmm2, %%xmm5 \n\t"
"psrad $24, %%xmm4 \n\t"
"punpcklwd %%xmm3, %%xmm6 \n\t"
"psrad $24, %%xmm5 \n\t"
"punpckhwd %%xmm3, %%xmm1 \n\t"
"psrad $24, %%xmm6 \n\t"
"cvtdq2ps %%xmm4, %%xmm4 \n\t"
"psrad $24, %%xmm1 \n\t"
"cvtdq2ps %%xmm5, %%xmm5 \n\t"
"mulps %%xmm7, %%xmm4 \n\t"
"cvtdq2ps %%xmm6, %%xmm6 \n\t"
"mulps %%xmm7, %%xmm5 \n\t"
"movaps %%xmm4, (%0) \n\t"
"cvtdq2ps %%xmm1, %%xmm1 \n\t"
"mulps %%xmm7, %%xmm6 \n\t"
"movaps %%xmm5, 16(%0) \n\t"
"mulps %%xmm7, %%xmm1 \n\t"
"movaps %%xmm6, 32(%0) \n\t"
"add $16, %1 \n\t"
"movaps %%xmm1, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out),"+r"(in)
:"c"(loops), "r"(a), "r"(f)
);
}
#endif //ARCH_x86
for (; i < len; i++)
*out++ = (*in++ - 0x80) * f;
return len << 2;
}
/*
The SSE code processes 16 bytes at a time and leaves any remainder for the C
- there is no remainder in practice */
static int fromFloat8(uchar *out, float *in, int len)
{
int i = 0;
float f = (1<<7) - 1;
#if ARCH_X86
if (sse_check() && len >= 16 && ((unsigned long)out & 0xf) == 0)
{
int loops = len >> 4;
i = loops << 4;
int a = 0x80808080;
__asm__ volatile (
"movd %3, %%xmm0 \n\t"
"movd %4, %%xmm7 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"movups (%1), %%xmm1 \n\t"
"movups 16(%1), %%xmm2 \n\t"
"mulps %%xmm7, %%xmm1 \n\t"
"movups 32(%1), %%xmm3 \n\t"
"mulps %%xmm7, %%xmm2 \n\t"
"cvtps2dq %%xmm1, %%xmm1 \n\t"
"movups 48(%1), %%xmm4 \n\t"
"mulps %%xmm7, %%xmm3 \n\t"
"cvtps2dq %%xmm2, %%xmm2 \n\t"
"mulps %%xmm7, %%xmm4 \n\t"
"cvtps2dq %%xmm3, %%xmm3 \n\t"
"packssdw %%xmm2, %%xmm1 \n\t"
"cvtps2dq %%xmm4, %%xmm4 \n\t"
"packssdw %%xmm4, %%xmm3 \n\t"
"add $64, %1 \n\t"
"packsswb %%xmm3, %%xmm1 \n\t"
"paddb %%xmm0, %%xmm1 \n\t"
"movdqu %%xmm1, (%0) \n\t"
"add $16, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out),"+r"(in)
:"c"(loops), "r"(a), "r"(f)
);
}
#endif //ARCH_x86
for (;i < len; i++)
*out++ = lrintf(clipcheck(*in++) * f) + 0x80;
return len;
}
static int toFloat16(float *out, short *in, int len)
{
int i = 0;
float f = 1.0f / ((1<<15) - 1);
#if ARCH_X86
if (sse_check() && len >= 16)
{
int loops = len >> 4;
i = loops << 4;
__asm__ volatile (
"movd %3, %%xmm7 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"xorpd %%xmm2, %%xmm2 \n\t"
"movdqa (%1), %%xmm1 \n\t"
"xorpd %%xmm3, %%xmm3 \n\t"
"punpcklwd %%xmm1, %%xmm2 \n\t"
"movdqa 16(%1), %%xmm4 \n\t"
"punpckhwd %%xmm1, %%xmm3 \n\t"
"psrad $16, %%xmm2 \n\t"
"punpcklwd %%xmm4, %%xmm5 \n\t"
"psrad $16, %%xmm3 \n\t"
"cvtdq2ps %%xmm2, %%xmm2 \n\t"
"punpckhwd %%xmm4, %%xmm6 \n\t"
"psrad $16, %%xmm5 \n\t"
"mulps %%xmm7, %%xmm2 \n\t"
"cvtdq2ps %%xmm3, %%xmm3 \n\t"
"psrad $16, %%xmm6 \n\t"
"mulps %%xmm7, %%xmm3 \n\t"
"cvtdq2ps %%xmm5, %%xmm5 \n\t"
"movaps %%xmm2, (%0) \n\t"
"cvtdq2ps %%xmm6, %%xmm6 \n\t"
"mulps %%xmm7, %%xmm5 \n\t"
"movaps %%xmm3, 16(%0) \n\t"
"mulps %%xmm7, %%xmm6 \n\t"
"movaps %%xmm5, 32(%0) \n\t"
"add $32, %1 \n\t"
"movaps %%xmm6, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out),"+r"(in)
:"c"(loops), "r"(f)
);
}
#endif //ARCH_x86
for (; i < len; i++)
*out++ = *in++ * f;
return len << 2;
}
static int fromFloat16(short *out, float *in, int len)
{
int i = 0;
float f = (1<<15) - 1;
#if ARCH_X86
if (sse_check() && len >= 16 && ((unsigned long)out & 0xf) == 0)
{
int loops = len >> 4;
i = loops << 4;
__asm__ volatile (
"movd %3, %%xmm7 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"movups (%1), %%xmm1 \n\t"
"movups 16(%1), %%xmm2 \n\t"
"mulps %%xmm7, %%xmm1 \n\t"
"movups 32(%1), %%xmm3 \n\t"
"mulps %%xmm7, %%xmm2 \n\t"
"cvtps2dq %%xmm1, %%xmm1 \n\t"
"movups 48(%1), %%xmm4 \n\t"
"mulps %%xmm7, %%xmm3 \n\t"
"cvtps2dq %%xmm2, %%xmm2 \n\t"
"mulps %%xmm7, %%xmm4 \n\t"
"cvtps2dq %%xmm3, %%xmm3 \n\t"
"cvtps2dq %%xmm4, %%xmm4 \n\t"
"packssdw %%xmm2, %%xmm1 \n\t"
"packssdw %%xmm4, %%xmm3 \n\t"
"add $64, %1 \n\t"
"movdqu %%xmm1, (%0) \n\t"
"movdqu %%xmm3, 16(%0) \n\t"
"add $32, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out),"+r"(in)
:"c"(loops), "r"(f)
);
}
#endif //ARCH_x86
for (;i < len;i++)
*out++ = lrintf(clipcheck(*in++) * f);
return len << 1;
}
static int toFloat32(AudioFormat format, float *out, int *in, int len)
{
int i = 0;
int bits = AudioOutputSettings::FormatToBits(format);
float f = 1.0f / ((uint)(1<<(bits-1)) - 128);
int shift = 32 - bits;
if (format == FORMAT_S24LSB)
shift = 0;
#if ARCH_X86
if (sse_check() && len >= 16)
{
int loops = len >> 4;
i = loops << 4;
__asm__ volatile (
"movd %3, %%xmm7 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"movd %4, %%xmm6 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"movdqa (%1), %%xmm1 \n\t"
"movdqa 16(%1), %%xmm2 \n\t"
"psrad %%xmm6, %%xmm1 \n\t"
"movdqa 32(%1), %%xmm3 \n\t"
"cvtdq2ps %%xmm1, %%xmm1 \n\t"
"psrad %%xmm6, %%xmm2 \n\t"
"movdqa 48(%1), %%xmm4 \n\t"
"cvtdq2ps %%xmm2, %%xmm2 \n\t"
"psrad %%xmm6, %%xmm3 \n\t"
"mulps %%xmm7, %%xmm1 \n\t"
"psrad %%xmm6, %%xmm4 \n\t"
"cvtdq2ps %%xmm3, %%xmm3 \n\t"
"movaps %%xmm1, (%0) \n\t"
"mulps %%xmm7, %%xmm2 \n\t"
"cvtdq2ps %%xmm4, %%xmm4 \n\t"
"movaps %%xmm2, 16(%0) \n\t"
"mulps %%xmm7, %%xmm3 \n\t"
"mulps %%xmm7, %%xmm4 \n\t"
"movaps %%xmm3, 32(%0) \n\t"
"add $64, %1 \n\t"
"movaps %%xmm4, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out),"+r"(in)
:"c"(loops), "r"(f), "r"(shift)
);
}
#endif //ARCH_x86
for (; i < len; i++)
*out++ = (*in++ >> shift) * f;
return len << 2;
}
static int fromFloat32(AudioFormat format, int *out, float *in, int len)
{
int i = 0;
int bits = AudioOutputSettings::FormatToBits(format);
float f = (uint)(1<<(bits-1)) - 128;
int shift = 32 - bits;
if (format == FORMAT_S24LSB)
shift = 0;
#if ARCH_X86
if (sse_check() && len >= 16 && ((unsigned long)out & 0xf) == 0)
{
float o = 1, mo = -1;
int loops = len >> 4;
i = loops << 4;
__asm__ volatile (
"movd %3, %%xmm7 \n\t"
"movss %4, %%xmm5 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"movss %5, %%xmm6 \n\t"
"punpckldq %%xmm5, %%xmm5 \n\t"
"punpckldq %%xmm6, %%xmm6 \n\t"
"movd %6, %%xmm0 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm5, %%xmm5 \n\t"
"punpckldq %%xmm6, %%xmm6 \n\t"
"1: \n\t"
"movups (%1), %%xmm1 \n\t"
"movups 16(%1), %%xmm2 \n\t"
"minps %%xmm5, %%xmm1 \n\t"
"movups 32(%1), %%xmm3 \n\t"
"maxps %%xmm6, %%xmm1 \n\t"
"movups 48(%1), %%xmm4 \n\t"
"mulps %%xmm7, %%xmm1 \n\t"
"minps %%xmm5, %%xmm2 \n\t"
"cvtps2dq %%xmm1, %%xmm1 \n\t"
"maxps %%xmm6, %%xmm2 \n\t"
"pslld %%xmm0, %%xmm1 \n\t"
"minps %%xmm5, %%xmm3 \n\t"
"mulps %%xmm7, %%xmm2 \n\t"
"movdqu %%xmm1, (%0) \n\t"
"cvtps2dq %%xmm2, %%xmm2 \n\t"
"maxps %%xmm6, %%xmm3 \n\t"
"minps %%xmm5, %%xmm4 \n\t"
"pslld %%xmm0, %%xmm2 \n\t"
"mulps %%xmm7, %%xmm3 \n\t"
"maxps %%xmm6, %%xmm4 \n\t"
"movdqu %%xmm2, 16(%0) \n\t"
"cvtps2dq %%xmm3, %%xmm3 \n\t"
"mulps %%xmm7, %%xmm4 \n\t"
"pslld %%xmm0, %%xmm3 \n\t"
"cvtps2dq %%xmm4, %%xmm4 \n\t"
"movdqu %%xmm3, 32(%0) \n\t"
"pslld %%xmm0, %%xmm4 \n\t"
"add $64, %1 \n\t"
"movdqu %%xmm4, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out), "+r"(in)
:"c"(loops), "r"(f), "m"(o), "m"(mo), "r"(shift)
);
}
#endif //ARCH_x86
for (;i < len;i++)
*out++ = lrintf(clipcheck(*in++) * f) << shift;
return len << 2;
}
static int fromFloatFLT(float *out, float *in, int len)
{
int i = 0;
#if ARCH_X86
if (sse_check() && len >= 16 && ((unsigned long)in & 0xf) == 0)
{
int loops = len >> 4;
float o = 1, mo = -1;
i = loops << 4;
__asm__ volatile (
"movss %3, %%xmm6 \n\t"
"movss %4, %%xmm7 \n\t"
"punpckldq %%xmm6, %%xmm6 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"punpckldq %%xmm6, %%xmm6 \n\t"
"punpckldq %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"movups (%1), %%xmm1 \n\t"
"movups 16(%1), %%xmm2 \n\t"
"minps %%xmm6, %%xmm1 \n\t"
"movups 32(%1), %%xmm3 \n\t"
"maxps %%xmm7, %%xmm1 \n\t"
"minps %%xmm6, %%xmm2 \n\t"
"movups 48(%1), %%xmm4 \n\t"
"maxps %%xmm7, %%xmm2 \n\t"
"movups %%xmm1, (%0) \n\t"
"minps %%xmm6, %%xmm3 \n\t"
"movups %%xmm2, 16(%0) \n\t"
"maxps %%xmm7, %%xmm3 \n\t"
"minps %%xmm6, %%xmm4 \n\t"
"movups %%xmm3, 32(%0) \n\t"
"maxps %%xmm7, %%xmm4 \n\t"
"add $64, %1 \n\t"
"movups %%xmm4, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(out), "+r"(in)
:"c"(loops), "m"(o), "m"(mo)
);
}
#endif //ARCH_x86
for (;i < len;i++)
*out++ = clipcheck(*in++);
return len << 2;
}
/**
* Returns true if platform has an FPU.
* for the time being, this test is limited to testing if SSE2 is supported
*/
bool AudioOutputUtil::has_hardware_fpu()
{
#if ARCH_X86
return sse_check();
#else
return false;
#endif
}
/**
* Convert integer samples to floats
*
* Consumes 'bytes' bytes from in and returns the numer of bytes written to out
*/
int AudioOutputUtil::toFloat(AudioFormat format, void *out, void *in,
int bytes)
{
if (bytes <= 0)
return 0;
switch (format)
{
case FORMAT_U8:
return toFloat8((float *)out, (uchar *)in, bytes);
case FORMAT_S16:
return toFloat16((float *)out, (short *)in, bytes >> 1);
case FORMAT_S24:
case FORMAT_S24LSB:
case FORMAT_S32:
return toFloat32(format, (float *)out, (int *)in, bytes >> 2);
case FORMAT_FLT:
memcpy(out, in, bytes);
return bytes;
}
return 0;
}
/**
* Convert float samples to integers
*
* Consumes 'bytes' bytes from in and returns the numer of bytes written to out
*/
int AudioOutputUtil::fromFloat(AudioFormat format, void *out, void *in,
int bytes)
{
if (bytes <= 0)
return 0;
switch (format)
{
case FORMAT_U8:
return fromFloat8((uchar *)out, (float *)in, bytes >> 2);
case FORMAT_S16:
return fromFloat16((short *)out, (float *)in, bytes >> 2);
case FORMAT_S24:
case FORMAT_S24LSB:
case FORMAT_S32:
return fromFloat32(format, (int *)out, (float *)in, bytes >> 2);
case FORMAT_FLT:
return fromFloatFLT((float *)out, (float *)in, bytes >> 2);
}
return 0;
}
/**
* Convert a mono stream to stereo by copying and interleaving samples
*/
void AudioOutputUtil::MonoToStereo(void *dst, void *src, int samples)
{
float *d = (float *)dst;
float *s = (float *)src;
for (int i = 0; i < samples; i++)
{
*d++ = *s;
*d++ = *s++;
}
}
/**
* Adjust the volume of samples
*
* Makes a crude attempt to normalise the relative volumes of
* PCM from mythmusic, PCM from video and upmixed AC-3
*/
void AudioOutputUtil::AdjustVolume(void *buf, int len, int volume,
bool music, bool upmix)
{
float g = volume / 100.0f;
float *fptr = (float *)buf;
int samples = len >> 2;
int i = 0;
// Should be exponential - this'll do
g *= g;
// Try to ~ match stereo volume when upmixing
if (upmix)
g *= 1.5f;
// Music is relatively loud
if (music)
g *= 0.4f;
if (g == 1.0f)
return;
#if ARCH_X86
if (sse_check() && samples >= 16)
{
int loops = samples >> 4;
i = loops << 4;
__asm__ volatile (
"movss %2, %%xmm0 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"punpckldq %%xmm0, %%xmm0 \n\t"
"1: \n\t"
"movups (%0), %%xmm1 \n\t"
"movups 16(%0), %%xmm2 \n\t"
"mulps %%xmm0, %%xmm1 \n\t"
"movups 32(%0), %%xmm3 \n\t"
"mulps %%xmm0, %%xmm2 \n\t"
"movups 48(%0), %%xmm4 \n\t"
"mulps %%xmm0, %%xmm3 \n\t"
"movups %%xmm1, (%0) \n\t"
"mulps %%xmm0, %%xmm4 \n\t"
"movups %%xmm2, 16(%0) \n\t"
"movups %%xmm3, 32(%0) \n\t"
"movups %%xmm4, 48(%0) \n\t"
"add $64, %0 \n\t"
"sub $1, %%ecx \n\t"
"jnz 1b \n\t"
:"+r"(fptr)
:"c"(loops),"m"(g)
);
}
#endif //ARCH_X86
for (; i < samples; i++)
*fptr++ *= g;
}
template <class AudioDataType>
void _MuteChannel(AudioDataType *buffer, int channels, int ch, int frames)
{
AudioDataType *s1 = buffer + ch;
AudioDataType *s2 = buffer - ch + 1;
for (int i = 0; i < frames; i++)
{
*s1 = *s2;
s1 += channels;
s2 += channels;
}
}
/**
* Mute individual channels through mono->stereo duplication
*
* Mute given channel (left or right) by copying right or left
* channel over.
*/
void AudioOutputUtil::MuteChannel(int obits, int channels, int ch,
void *buffer, int bytes)
{
int frames = bytes / ((obits >> 3) * channels);
if (obits == 8)
_MuteChannel((uchar *)buffer, channels, ch, frames);
else if (obits == 16)
_MuteChannel((short *)buffer, channels, ch, frames);
else
_MuteChannel((int *)buffer, channels, ch, frames);
}