oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

pcm/dsd2pcm: remove unused sources

Browse Source
This commit is contained in:
Max Kellermann 2020-01-14 17:38:19 +01:00
parent 64309abc14
commit 5a87fc7c26
7 changed files with 0 additions and 543 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
src/pcm/dsd2pcm/dsd2pcm.hpp
View File

@ -1,69 +0,0 @@
/*
Copyright 2009, 2011 Sebastian Gesemann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list
of conditions and the following disclaimer in the documentation and/or other materials
provided with the distribution.
THIS SOFTWARE IS PROVIDED BY SEBASTIAN GESEMANN ''AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEBASTIAN GESEMANN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Sebastian Gesemann.
*/
#ifndef DSD2PCM_HXX_INCLUDED
#define DSD2PCM_HXX_INCLUDED
#include <algorithm>
#include <stdexcept>
#include "dsd2pcm.h"
/**
* C++ PImpl Wrapper for the dsd2pcm C library
*/
class dxd
{
dsd2pcm_ctx *handle;
public:
dxd() : handle(dsd2pcm_init()) {}
dxd(dxd const& x) : handle(dsd2pcm_clone(x.handle)) {}
~dxd() { dsd2pcm_destroy(handle); }
friend void swap(dxd & a, dxd & b)
{ std::swap(a.handle,b.handle); }
dxd& operator=(dxd x)
{ swap(*this,x); return *this; }
void translate(size_t samples,
const unsigned char *src, ptrdiff_t src_stride,
bool lsbitfirst,
float *dst, ptrdiff_t dst_stride)
{
dsd2pcm_translate(handle,samples,src,src_stride,
lsbitfirst,dst,dst_stride);
}
};
#endif // DSD2PCM_HXX_INCLUDED

38
src/pcm/dsd2pcm/info.txt
View File

@ -1,38 +0,0 @@
You downloaded the source code for "dsd2pcm" which is a simple little
"filter" program, that takes a DSD data stream on stdin and converts
it to a PCM stream (352.8 kHz, either 16 or 24 bits) and writes it to
stdout. The code is split into three modules:
(1) dsd2pcm
This is where the 8:1 decimation magic happens. It's an
implementation of a symmetric 96-taps FIR lowpass filter
optimized for DSD inputs. If you feed this converter with
DSD64 you get a PCM stream at 352.8 kHz and floating point
samples. This module is independent and can be reused.
(2) noiseshape
A module for applying generic noise shaping filters. It's
used for the 16-bit output mode in "main" to preserve the
dynamic range. This module is independent and can be reused.
(3) main.cpp (file contains the main function and handles I/O)
The first two modules are pure C for maximum portability. In addition,
there are C++ wrapper headers for convenient use of these modules in
C++. The main application is a C++ application and makes use of the
C++ headers to access the functionality of the first two modules.
Under Linux this program is easily compiled by typing
g++ *.c *.cpp -O3 -o dsd2pcm
provided you have GCC installed. That's why I didn't bother writing
any makefiles. :-p
Cheers!
SG

150
src/pcm/dsd2pcm/main.cpp
View File

@ -1,150 +0,0 @@
/*
Copyright 2009, 2011 Sebastian Gesemann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list
of conditions and the following disclaimer in the documentation and/or other materials
provided with the distribution.
THIS SOFTWARE IS PROVIDED BY SEBASTIAN GESEMANN ''AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEBASTIAN GESEMANN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Sebastian Gesemann.
*/
#include <iostream>
#include <vector>
#include <cstring>
#include "dsd2pcm.hpp"
#include "noiseshape.hpp"
namespace {
const float my_ns_coeffs[] = {
// b1 b2 a1 a2
-1.62666423, 0.79410094, 0.61367127, 0.23311013, // section 1
-1.44870017, 0.54196219, 0.03373857, 0.70316556 // section 2
};
const int my_ns_soscount = sizeof(my_ns_coeffs)/(sizeof(my_ns_coeffs[0])*4);
inline long myround(float x)
{
return static_cast<long>(x + (x>=0 ? 0.5f : -0.5f));
}
template<typename T>
struct id { typedef T type; };
template<typename T>
inline T clip(
typename id<T>::type min,
T v,
typename id<T>::type max)
{
if (v<min) return min;
if (v>max) return max;
return v;
}
inline void write_intel16(unsigned char * ptr, unsigned word)
{
ptr[0] = word & 0xFF;
ptr[1] = (word >> 8) & 0xFF;
}
inline void write_intel24(unsigned char * ptr, unsigned long word)
{
ptr[0] = word & 0xFF;
ptr[1] = (word >> 8) & 0xFF;
ptr[2] = (word >> 16) & 0xFF;
}
} // anonymous namespace
using std::vector;
using std::cin;
using std::cout;
using std::cerr;
int main(int argc, char *argv[])
{
const int block = 16384;
int channels = -1;
int lsbitfirst = -1;
int bits = -1;
if (argc==4) {
if ('1'<=argv[1][0] && argv[1][0]<='9') channels = 1 + (argv[1][0]-'1');
if (argv[2][0]=='m' || argv[2][0]=='M') lsbitfirst=0;
if (argv[2][0]=='l' || argv[2][0]=='L') lsbitfirst=1;
if (!strcmp(argv[3],"16")) bits = 16;
if (!strcmp(argv[3],"24")) bits = 24;
}
if (channels<1 || lsbitfirst<0 || bits<0) {
cerr << "\n"
"DSD2PCM filter (raw DSD64 --> 352 kHz raw PCM)\n"
"(c) 2009 Sebastian Gesemann\n\n"
"(filter as in \"reads data from stdin and writes to stdout\")\n\n"
"Syntax: dsd2pcm <channels> <bitorder> <bitdepth>\n"
"channels = 1,2,3,...,9 (number of channels in DSD stream)\n"
"bitorder = L (lsb first), M (msb first) (DSD stream option)\n"
"bitdepth = 16 or 24 (intel byte order, output option)\n\n"
"Note: At 16 bits/sample a noise shaper kicks in that can preserve\n"
"a dynamic range of 135 dB below 30 kHz.\n\n";
return 1;
}
int bytespersample = bits/8;
vector<dxd> dxds (channels);
vector<noise_shaper> ns;
if (bits==16) {
ns.resize(channels, noise_shaper(my_ns_soscount, my_ns_coeffs) );
}
vector<unsigned char> dsd_data (block * channels);
vector<float> float_data (block);
vector<unsigned char> pcm_data (block * channels * bytespersample);
char * const dsd_in = reinterpret_cast<char*>(&dsd_data[0]);
char * const pcm_out = reinterpret_cast<char*>(&pcm_data[0]);
while (cin.read(dsd_in,block * channels)) {
for (int c=0; c<channels; ++c) {
dxds[c].translate(block,&dsd_data[0]+c,channels,
lsbitfirst,
&float_data[0],1);
unsigned char * out = &pcm_data[0] + c*bytespersample;
if (bits==16) {
for (int s=0; s<block; ++s) {
float r = float_data[s]*32768 + ns[c].get();
long smp = clip(-32768,myround(r),32767);
ns[c].update( clip(-1,smp-r,1) );
write_intel16(out,smp);
out += channels*bytespersample;
}
} else {
for (int s=0; s<block; ++s) {
float r = float_data[s]*8388608;
long smp = clip(-8388608,myround(r),8388607);
write_intel24(out,smp);
out += channels*bytespersample;
}
}
}
cout.write(pcm_out,block*channels*bytespersample);
}
}

113
src/pcm/dsd2pcm/noiseshape.c
View File

@ -1,113 +0,0 @@
/*
Copyright 2009, 2011 Sebastian Gesemann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list
of conditions and the following disclaimer in the documentation and/or other materials
provided with the distribution.
THIS SOFTWARE IS PROVIDED BY SEBASTIAN GESEMANN ''AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEBASTIAN GESEMANN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Sebastian Gesemann.
*/
#include <stdlib.h>
#include <string.h>
#include "noiseshape.h"
extern int noise_shape_init(
noise_shape_ctx *ctx,
int sos_count,
const float *coeffs)
{
int i;
ctx->sos_count = sos_count;
ctx->bbaa = coeffs;
ctx->t1 = (float*) malloc(sizeof(float)*sos_count);
if (!ctx->t1) goto escape1;
ctx->t2 = (float*) malloc(sizeof(float)*sos_count);
if (!ctx->t2) goto escape2;
for (i=0; i<sos_count; ++i) {
ctx->t1[i] = 0.f;
ctx->t2[i] = 0.f;
}
return 0;
escape2:
free(ctx->t1);
escape1:
return -1;
}
extern void noise_shape_destroy(
noise_shape_ctx *ctx)
{
free(ctx->t1);
free(ctx->t2);
}
extern int noise_shape_clone(
const noise_shape_ctx *from,
noise_shape_ctx *to)
{
to->sos_count = from->sos_count;
to->bbaa = from->bbaa;
to->t1 = (float*) malloc(sizeof(float)*to->sos_count);
if (!to->t1) goto error1;
to->t2 = (float*) malloc(sizeof(float)*to->sos_count);
if (!to->t2) goto error2;
memcpy(to->t1,from->t1,sizeof(float)*to->sos_count);
memcpy(to->t2,from->t2,sizeof(float)*to->sos_count);
return 0;
error2:
free(to->t1);
error1:
return -1;
}
extern float noise_shape_get(noise_shape_ctx *ctx)
{
int i;
float acc;
const float *c;
acc = 0.0;
c = ctx->bbaa;
for (i=0; i<ctx->sos_count; ++i) {
float t1i = ctx->t1[i];
float t2i = ctx->t2[i];
ctx->t2[i] = acc -= t1i * c[2] + t2i * c[3];
acc += t1i * c[0] + t2i * c[1];
c += 4;
}
return acc;
}
extern void noise_shape_update(noise_shape_ctx *ctx, float qerror)
{
float *p;
int i;
for (i=0; i<ctx->sos_count; ++i) {
ctx->t2[i] += qerror;
}
p = ctx->t1;
ctx->t1 = ctx->t2;
ctx->t2 = p;
}

87
src/pcm/dsd2pcm/noiseshape.h
View File

@ -1,87 +0,0 @@
/*
Copyright 2009, 2011 Sebastian Gesemann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list
of conditions and the following disclaimer in the documentation and/or other materials
provided with the distribution.
THIS SOFTWARE IS PROVIDED BY SEBASTIAN GESEMANN ''AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEBASTIAN GESEMANN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Sebastian Gesemann.
*/
#ifndef NOISE_SHAPE_H_INCLUDED
#define NOISE_SHAPE_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
typedef struct noise_shape_ctx_s {
int sos_count; /* number of second order sections */
const float *bbaa; /* filter coefficients, owned by user */
float *t1, *t2; /* filter state, owned by ns library */
} noise_shape_ctx;
/**
* initializes a noise_shaper context
* returns an error code or 0
*/
extern int noise_shape_init(
noise_shape_ctx *ctx,
int sos_count,
const float *coeffs);
/**
* destroys a noise_shaper context
*/
extern void noise_shape_destroy(
noise_shape_ctx *ctx);
/**
* initializes a noise_shaper context so that its state
* is a copy of a given context
* returns an error code or 0
*/
extern int noise_shape_clone(
const noise_shape_ctx *from, noise_shape_ctx *to);
/**
* computes the next "noise shaping sample". Note: This call
* alters the internal state. xxx_get and xxx_update must be
* called in an alternating manner.
*/
extern float noise_shape_get(
noise_shape_ctx *ctx);
/**
* updates the noise shaper's state with the
* last quantization error
*/
extern void noise_shape_update(
noise_shape_ctx *ctx, float qerror);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* NOISE_SHAPE_H_INCLUDED */

73
src/pcm/dsd2pcm/noiseshape.hpp
View File

@ -1,73 +0,0 @@
/*
Copyright 2009, 2011 Sebastian Gesemann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list
of conditions and the following disclaimer in the documentation and/or other materials
provided with the distribution.
THIS SOFTWARE IS PROVIDED BY SEBASTIAN GESEMANN ''AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEBASTIAN GESEMANN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Sebastian Gesemann.
*/
#ifndef NOISE_SHAPE_HXX_INCLUDED
#define NOISE_SHAPE_HXX_INCLUDED
#include <stdexcept>
#include "noiseshape.h"
/**
* C++ wrapper for the noiseshape C library
*/
class noise_shaper
{
noise_shape_ctx ctx;
public:
noise_shaper(int sos_count, const float *bbaa)
{
noise_shape_init(&ctx, sos_count, bbaa);
}
noise_shaper(noise_shaper const& x)
{
noise_shape_clone(&x.ctx,&ctx);
}
~noise_shaper()
{ noise_shape_destroy(&ctx); }
noise_shaper& operator=(noise_shaper const& x)
{
if (this != &x) {
noise_shape_destroy(&ctx);
noise_shape_clone(&x.ctx,&ctx);
}
return *this;
}
float get() { return noise_shape_get(&ctx); }
void update(float error) { noise_shape_update(&ctx,error); }
};
#endif /* NOISE_SHAPE_HXX_INCLUDED */

13
src/pcm/meson.build
View File

@ -30,19 +30,6 @@ if get_option('dsd')
'PcmDsd.cxx',
'dsd2pcm/dsd2pcm.c',
]
executable(
'dsd2pcm',
'dsd2pcm/main.cpp',
'dsd2pcm/dsd2pcm.c',
'dsd2pcm/noiseshape.c',
include_directories: inc,
dependencies: [
util_dep,
],
build_by_default: get_option('test'),
install: false,
)
endif
libsamplerate_dep = dependency('samplerate', version: '>= 0.1.3', required: get_option('libsamplerate'))