Ticket #398: Initial support for Secret Rabbit Code (aka libsamplerate) sample rate conversionl library
git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1493 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/build/Makefile b/pjmedia/build/Makefile
index 11ffdc9..fd73580 100644
--- a/pjmedia/build/Makefile
+++ b/pjmedia/build/Makefile
@@ -45,7 +45,7 @@
echo_suppress.o endpoint.o errno.o \
g711.o jbuf.o master_port.o mem_capture.o mem_player.o \
null_port.o plc_common.o port.o splitcomb.o \
- resample_resample.o \
+ resample_resample.o resample_libsamplerate.o \
resample_port.o rtcp.o rtp.o sdp.o sdp_cmp.o sdp_neg.o \
session.o silencedet.o sound_port.o stream.o \
tonegen.o transport_ice.o transport_udp.o \
diff --git a/pjmedia/build/pjmedia.dsp b/pjmedia/build/pjmedia.dsp
index 801b96a..0a59d37 100644
--- a/pjmedia/build/pjmedia.dsp
+++ b/pjmedia/build/pjmedia.dsp
@@ -181,6 +181,10 @@
# End Source File
# Begin Source File
+SOURCE=..\src\pjmedia\resample_libsamplerate.c
+# End Source File
+# Begin Source File
+
SOURCE=..\src\pjmedia\resample_port.c
# End Source File
# Begin Source File
diff --git a/pjmedia/include/pjmedia/config.h b/pjmedia/include/pjmedia/config.h
index f438f18..cc6695c 100644
--- a/pjmedia/include/pjmedia/config.h
+++ b/pjmedia/include/pjmedia/config.h
@@ -127,54 +127,86 @@
/*
- * ** THIS MACRO IS DEPRECATED in 0.6. **
- * ** See libresample for configuring this **
+ * Warn about obsolete macros.
*
- * Include small filter table in resample.
- * This adds about 9KB in rdata.
+ * PJMEDIA_HAS_SMALL_FILTER has been deprecated in 0.7.
*/
-/*
-#ifndef PJMEDIA_HAS_SMALL_FILTER
-# define PJMEDIA_HAS_SMALL_FILTER 1
+#if defined(PJMEDIA_HAS_SMALL_FILTER)
+# ifdef _MSC_VER
+# pragma message("Warning: PJMEDIA_HAS_SMALL_FILTER macro is deprecated"\
+ " and has no effect")
+# else
+# warning "PJMEDIA_HAS_SMALL_FILTER macro is deprecated and has no effect"
+# endif
#endif
-*/
+
/*
- * ** THIS MACRO IS DEPRECATED in 0.6. **
- * ** See libresample for configuring this **
+ * Warn about obsolete macros.
*
- * Include large filter table in resample.
- * This adds about 32KB in rdata.
+ * PJMEDIA_HAS_LARGE_FILTER has been deprecated in 0.7.
*/
-/*
-#ifndef PJMEDIA_HAS_LARGE_FILTER
-# define PJMEDIA_HAS_LARGE_FILTER 1
+#if defined(PJMEDIA_HAS_LARGE_FILTER)
+# ifdef _MSC_VER
+# pragma message("Warning: PJMEDIA_HAS_LARGE_FILTER macro is deprecated"\
+ " and has no effect")
+# else
+# warning "PJMEDIA_HAS_LARGE_FILTER macro is deprecated"
+# endif
#endif
-*/
+
+
+/*
+ * These macros are obsolete in 0.7.1 so it will trigger compilation error.
+ * Please use PJMEDIA_RESAMPLE_IMP to select the resample implementation
+ * to use.
+ */
+#ifdef PJMEDIA_HAS_LIBRESAMPLE
+# error "PJMEDIA_HAS_LIBRESAMPLE macro is deprecated. Use '#define PJMEDIA_RESAMPLE_IMP PJMEDIA_RESAMPLE_LIBRESAMPLE'"
+#endif
+
+#ifdef PJMEDIA_HAS_SPEEX_RESAMPLE
+# error "PJMEDIA_HAS_SPEEX_RESAMPLE macro is deprecated. Use '#define PJMEDIA_RESAMPLE_IMP PJMEDIA_RESAMPLE_SPEEX'"
+#endif
+
+
+/*
+ * Sample rate conversion backends.
+ * Select one of these backends in PJMEDIA_RESAMPLE_IMP.
+ */
+#define PJMEDIA_RESAMPLE_NONE 1 /**< No resampling. */
+#define PJMEDIA_RESAMPLE_LIBRESAMPLE 2 /**< Sample rate conversion
+ using libresample. */
+#define PJMEDIA_RESAMPLE_SPEEX 3 /**< Sample rate conversion
+ using Speex. */
+#define PJMEDIA_RESAMPLE_LIBSAMPLERATE 4 /**< Sample rate conversion
+ using libsamplerate
+ (a.k.a Secret Rabbit Code)
+ */
/**
- * Specify whether libresample should be used for the sampling
- * rate conversion. This macro and PJMEDIA_HAS_SPEEX_RESAMPLE
- * are mutually exclusive.
+ * Select which resample implementation to use. Currently pjmedia supports:
+ * - #PJMEDIA_RESAMPLE_LIBRESAMPLE, to use libresample-1.7, this is the default
+ * implementation to be used.
+ * - #PJMEDIA_RESAMPLE_LIBSAMPLERATE, to use libsamplerate implementation
+ * (a.k.a. Secret Rabbit Code).
+ * - #PJMEDIA_RESAMPLE_SPEEX, to use experimental sample rate conversion in
+ * Speex library.
+ * - #PJMEDIA_RESAMPLE_NONE, to disable sample rate conversion. Any calls to
+ * resample function will return error.
*
- * Default: 1 (Yes)
+ * Default is PJMEDIA_RESAMPLE_LIBRESAMPLE
*/
-#ifndef PJMEDIA_HAS_LIBRESAMPLE
-# define PJMEDIA_HAS_LIBRESAMPLE 1
+#ifndef PJMEDIA_RESAMPLE_IMP
+# define PJMEDIA_RESAMPLE_IMP PJMEDIA_RESAMPLE_LIBRESAMPLE
#endif
/**
- * Specify whether Speex sample rate convertor should be used for the
- * sampling rate conversion. This macro and PJMEDIA_HAS_LIBRESAMPLE
- * are mutually exclusive.
- *
- * Default: 0
+ * Specify whether libsamplerate, when used, should be linked statically
+ * into the application. This option is only useful for Visual Studio
+ * projects, and when this static linking is enabled
*/
-#ifndef PJMEDIA_HAS_SPEEX_RESAMPLE
-# define PJMEDIA_HAS_SPEEX_RESAMPLE 0
-#endif
-
/**
diff --git a/pjmedia/src/pjmedia/resample_libsamplerate.c b/pjmedia/src/pjmedia/resample_libsamplerate.c
new file mode 100644
index 0000000..9bca5e1
--- /dev/null
+++ b/pjmedia/src/pjmedia/resample_libsamplerate.c
@@ -0,0 +1,206 @@
+/* $Id$ */
+/*
+ * Copyright (C) 2003-2007 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <pjmedia/resample.h>
+#include <pjmedia/errno.h>
+#include <pj/assert.h>
+#include <pj/log.h>
+#include <pj/pool.h>
+
+/*
+ * HOW TO ACTIVATE LIBSAMPLERATE (a.k.a SRC/Secret Rabbit Code) AS
+ * PJMEDIA'S SAMPLE RATE CONVERSION BACKEND
+ *
+ * See README.txt in third_party/samplerate directory.
+ */
+
+
+#if PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_LIBSAMPLERATE
+
+#include "../../third_party/libsamplerate/src/samplerate.h"
+
+#define THIS_FILE "resample_libsamplerate.c"
+
+#if defined(_MSC_VER)
+# ifdef _DEBUG
+# pragma comment( lib, "../../third_party/lib/libsamplerate-i386-win32-vc-debug.lib")
+# else
+# pragma comment( lib, "../../third_party/lib/libsamplerate-i386-win32-vc-release.lib")
+# endif
+#endif
+
+
+struct pjmedia_resample
+{
+ SRC_STATE *state;
+ unsigned in_samples;
+ unsigned out_samples;
+ float *frame_in, *frame_out;
+ unsigned in_extra, out_extra;
+ double ratio;
+};
+
+
+PJ_DEF(pj_status_t) pjmedia_resample_create( pj_pool_t *pool,
+ pj_bool_t high_quality,
+ pj_bool_t large_filter,
+ unsigned channel_count,
+ unsigned rate_in,
+ unsigned rate_out,
+ unsigned samples_per_frame,
+ pjmedia_resample **p_resample)
+{
+ pjmedia_resample *resample;
+ int type, err;
+
+ PJ_ASSERT_RETURN(pool && p_resample && rate_in &&
+ rate_out && samples_per_frame, PJ_EINVAL);
+
+ resample = PJ_POOL_ZALLOC_T(pool, pjmedia_resample);
+ PJ_ASSERT_RETURN(resample, PJ_ENOMEM);
+
+ /* Select conversion type */
+ if (high_quality) {
+ type = large_filter ? SRC_SINC_BEST_QUALITY : SRC_SINC_MEDIUM_QUALITY;
+ } else {
+ type = large_filter ? SRC_SINC_FASTEST : SRC_LINEAR;
+ }
+
+ /* Create converter */
+ resample->state = src_new(type, channel_count, &err);
+ if (resample->state == NULL) {
+ PJ_LOG(4,(THIS_FILE, "Error creating resample: %s",
+ src_strerror(err)));
+ return PJMEDIA_ERROR;
+ }
+
+ /* Calculate ratio */
+ resample->ratio = rate_out * 1.0 / rate_in;
+
+ /* Calculate number of samples for input and output */
+ resample->in_samples = samples_per_frame;
+ resample->out_samples = rate_out / (rate_in / samples_per_frame);
+
+ resample->frame_in = (float*)
+ pj_pool_calloc(pool,
+ resample->in_samples + 8,
+ sizeof(float));
+
+ resample->frame_out = (float*)
+ pj_pool_calloc(pool,
+ resample->out_samples + 8,
+ sizeof(float));
+
+ /* Set the converter ratio */
+ err = src_set_ratio(resample->state, resample->ratio);
+ if (err != 0) {
+ PJ_LOG(4,(THIS_FILE, "Error creating resample: %s",
+ src_strerror(err)));
+ return PJMEDIA_ERROR;
+ }
+
+ /* Done */
+
+ PJ_LOG(5,(THIS_FILE,
+ "Resample using libsamplerate %s, type=%s (%s), "
+ "ch=%d, in/out rate=%d/%d",
+ src_get_version(),
+ src_get_name(type), src_get_description(type),
+ channel_count, rate_in, rate_out));
+
+ *p_resample = resample;
+
+ return PJ_SUCCESS;
+}
+
+
+PJ_DEF(void) pjmedia_resample_run( pjmedia_resample *resample,
+ const pj_int16_t *input,
+ pj_int16_t *output )
+{
+ SRC_DATA src_data;
+
+ /* Convert samples to float */
+ src_short_to_float_array(input, resample->frame_in,
+ resample->in_samples);
+
+ if (resample->in_extra) {
+ unsigned i;
+
+ for (i=0; i<resample->in_extra; ++i)
+ resample->frame_in[resample->in_samples+i] =
+ resample->frame_in[resample->in_samples-1];
+ }
+
+ /* Prepare SRC_DATA */
+ pj_bzero(&src_data, sizeof(src_data));
+ src_data.data_in = resample->frame_in;
+ src_data.data_out = resample->frame_out;
+ src_data.input_frames = resample->in_samples + resample->in_extra;
+ src_data.output_frames = resample->out_samples + resample->out_extra;
+ src_data.src_ratio = resample->ratio;
+
+ /* Process! */
+ src_process(resample->state, &src_data);
+
+ /* Convert output back to short */
+ src_float_to_short_array(resample->frame_out, output,
+ src_data.output_frames_gen);
+
+ /* Replay last sample if conversion couldn't fill up the whole
+ * frame. This could happen for example with 22050 to 16000 conversion.
+ */
+ if (src_data.output_frames_gen < (int)resample->out_samples) {
+ unsigned i;
+
+ if (resample->in_extra < 4)
+ resample->in_extra++;
+
+ for (i=src_data.output_frames_gen;
+ i<resample->out_samples; ++i)
+ {
+ output[i] = output[src_data.output_frames_gen-1];
+ }
+ }
+}
+
+
+PJ_DEF(unsigned) pjmedia_resample_get_input_size(pjmedia_resample *resample)
+{
+ PJ_ASSERT_RETURN(resample != NULL, 0);
+ return resample->in_samples;
+}
+
+
+PJ_DEF(void) pjmedia_resample_destroy(pjmedia_resample *resample)
+{
+ PJ_ASSERT_ON_FAIL(resample, return);
+ if (resample->state) {
+ src_delete(resample->state);
+ resample->state = NULL;
+
+ PJ_LOG(5,(THIS_FILE, "Resample destroyed"));
+ }
+}
+
+#else /* PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_LIBSAMPLERATE */
+
+int pjmedia_libsamplerate_excluded;
+
+#endif /* PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_LIBSAMPLERATE */
+
diff --git a/pjmedia/src/pjmedia/resample_resample.c b/pjmedia/src/pjmedia/resample_resample.c
index e013748..d3b53d9 100644
--- a/pjmedia/src/pjmedia/resample_resample.c
+++ b/pjmedia/src/pjmedia/resample_resample.c
@@ -25,7 +25,7 @@
#include <pj/pool.h>
-#if defined(PJMEDIA_HAS_LIBRESAMPLE) && PJMEDIA_HAS_LIBRESAMPLE != 0
+#if PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_LIBRESAMPLE
#include <third_party/resample/include/resamplesubs.h>
@@ -215,16 +215,11 @@
}
-#else /* PJMEDIA_HAS_LIBRESAMPLE */
+#elif PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_NONE
/*
* This is the configuration when sample rate conversion is disabled.
*/
-struct pjmedia_resample
-{
- unsigned samples_per_frame;
-};
-
PJ_DEF(pj_status_t) pjmedia_resample_create( pj_pool_t *pool,
pj_bool_t high_quality,
pj_bool_t large_filter,
@@ -234,40 +229,37 @@
unsigned samples_per_frame,
pjmedia_resample **p_resample)
{
- pjmedia_resample *resample;
-
- PJ_ASSERT_RETURN(rate_in == rate_out, PJ_EINVALIDOP);
+ PJ_UNUSED_ARG(pool);
+ PJ_UNUSED_ARG(high_quality);
+ PJ_UNUSED_ARG(large_filter);
+ PJ_UNUSED_ARG(channel_count);
+ PJ_UNUSED_ARG(rate_in);
+ PJ_UNUSED_ARG(rate_out);
+ PJ_UNUSED_ARG(samples_per_frame);
+ PJ_UNUSED_ARG(p_resample);
- PJ_UNUSED_ARG(high_quality);
- PJ_UNUSED_ARG(large_filter);
- PJ_UNUSED_ARG(channel_count);
- PJ_UNUSED_ARG(rate_in);
- PJ_UNUSED_ARG(rate_out);
-
- resample = PJ_POOL_ZALLOC_T(pool, pjmedia_resample);
- resample->samples_per_frame = samples_per_frame;
-
- *p_resample = resample;
-
- return PJ_SUCCESS;
+ return PJ_EINVALIDOP;
}
PJ_DEF(void) pjmedia_resample_run( pjmedia_resample *resample,
const pj_int16_t *input,
pj_int16_t *output )
{
- pjmedia_copy_samples(output, input, resample->samples_per_frame);
+ PJ_UNUSED_ARG(resample);
+ PJ_UNUSED_ARG(input);
+ PJ_UNUSED_ARG(output);
}
PJ_DEF(unsigned) pjmedia_resample_get_input_size(pjmedia_resample *resample)
{
- return resample->samples_per_frame;
+ PJ_UNUSED_ARG(resample);
+ return 0;
}
PJ_DEF(void) pjmedia_resample_destroy(pjmedia_resample *resample)
{
- PJ_UNUSED_ARG(resample);
+ PJ_UNUSED_ARG(resample);
}
-#endif /* PJMEDIA_HAS_LIBRESAMPLE */
+#endif /* PJMEDIA_RESAMPLE_IMP */
diff --git a/pjmedia/src/pjmedia/resample_speex.c b/pjmedia/src/pjmedia/resample_speex.c
index fcc4211..fc73b78 100644
--- a/pjmedia/src/pjmedia/resample_speex.c
+++ b/pjmedia/src/pjmedia/resample_speex.c
@@ -22,7 +22,7 @@
#include <pj/log.h>
#include <pj/pool.h>
-#if defined(PJMEDIA_HAS_SPEEX_RESAMPLE) && PJMEDIA_HAS_SPEEX_RESAMPLE != 0
+#if PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_SPEEX
#include <speex/speex_resampler.h>
@@ -118,9 +118,9 @@
}
}
-#else /* PJMEDIA_HAS_SPEEX_RESAMPLE */
+#else /* PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_SPEEX */
int pjmedia_resample_speex_excluded;
-#endif /* PJMEDIA_HAS_SPEEX_RESAMPLE */
+#endif /* PJMEDIA_RESAMPLE_IMP==PJMEDIA_RESAMPLE_SPEEX */
diff --git a/third_party/build/samplerate/README.txt b/third_party/build/samplerate/README.txt
new file mode 100644
index 0000000..4883259
--- /dev/null
+++ b/third_party/build/samplerate/README.txt
@@ -0,0 +1,74 @@
+
+ HOW TO ACTIVATE LIBSAMPLERATE
+ (a.k.a SRC/Secret Rabbit Code)
+ AS PJMEDIA'S SAMPLE RATE CONVERSION BACKEND
+
+ by
+ Benny Prijono
+ PJSIP
+
+Background
+----------
+ Secret Rabbit Code (aka libsamplerate) is a sample rate conversion
+ library, available from http://www.mega-nerd.com/SRC/index.html.
+ It is licensed under dual license, GPL and proprietary.
+
+
+Supported Platforms
+-------------------
+ libsamplerate is available for Win32 with Visual Studio and the
+ Makefile based targets (such as Linux, MacOS X, *nix, etc.).
+
+ It's not supported for WinCE/Windows Mobile and Symbian since it is
+ a floating point based implementation.
+
+
+Installation
+------------
+ - Download libsamplerate from http://www.mega-nerd.com/SRC/index.html
+
+ - Untar libsamplerate-0.1.2.tar.gz into third_party directory
+ cd third_party
+ tar xzf libsamplerate-0.1.2.tar.gz
+
+ - Rename libsamplerate-0.1.2 directory name to libsamplerate
+ On Windows:
+ ren libsamplerate-0.1.2 libsamplerate
+
+ On Linux/Unix/MacOS X:
+ mv libsamplerate-0.1.2 libsamplerate
+
+
+Visual Studio Build
+-------------------
+ For Visual Studio projects, only static linkage is supported
+ by PJMEDIA build system. If dynamic linking is desired, edit
+ pjmedia/src/pjmedia/resample_libresample.c to prevent it from
+ linking with the static library, and configure your project
+ to link with libsamplerate DLL library.
+
+ To build libresample static library with Visual Studio:
+
+ - Open third_party/build/samplerate/libsamplerate_static.dsp
+ - Build the project for both Debug and Release build
+
+
+ libresample dynamic library can be produced by following the
+ instructions in libresample source directory.
+
+
+Makefile build
+--------------
+ libsamplerate build is integrated with PJSIP's build system.
+
+ TBD.
+
+
+Enabling libsamplerate for PJMEDIA's resample
+---------------------------------------------
+ Add this in config_site.h:
+
+ #define PJMEDIA_RESAMPLE_IMP PJMEDIA_RESAMPLE_LIBSAMPLERATE
+
+
+
diff --git a/third_party/build/samplerate/Static.msvc b/third_party/build/samplerate/Static.msvc
new file mode 100644
index 0000000..0f04c8f
--- /dev/null
+++ b/third_party/build/samplerate/Static.msvc
@@ -0,0 +1,138 @@
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE
+NULL=nul
+!ENDIF
+
+CPP=cl.exe
+RSC=rc.exe
+F90=df.exe
+BSC32=bscmake.exe
+BSC32_SBRS= \
+
+LIB32=link.exe -lib
+
+OUTDIR_REL=.\output\libsamplerate-i386-win32-vc-release
+INTDIR_REL=.\output\libsamplerate-i386-win32-vc-release
+OUTDIR_DEB=.\output\libsamplerate-i386-win32-vc-debug
+INTDIR_DEB=.\output\libsamplerate-i386-win32-vc-debug
+
+LIB_REL=..\..\lib\libsamplerate-i386-win32-vc-release.lib
+LIB_DEB=..\..\lib\libsamplerate-i386-win32-vc-debug.lib
+
+ALL : $(LIB_REL) $(LIB_DEB)
+
+CLEAN :
+ -@erase "$(INTDIR_REL)\*.obj"
+ -@erase "$(INTDIR_REL)\*.pch"
+ -@erase "$(INTDIR_REL)\*.pdb"
+ -@erase "$(INTDIR_REL)\*.idb"
+ @rmdir $(INTDIR_REL)
+ -@erase "$(INTDIR_DEB)\*.obj"
+ -@erase "$(INTDIR_DEB)\*.pch"
+ -@erase "$(INTDIR_DEB)\*.pdb"
+ -@erase "$(INTDIR_DEB)\*.idb"
+ @rmdir $(INTDIR_DEB)
+ -@erase $(LIB_REL)
+ -@erase $(LIB_DEB)
+
+"$(OUTDIR_REL)" :
+ if not exist "$(OUTDIR_REL)/$(NULL)" mkdir "$(OUTDIR_REL)"
+
+CPP_PROJ_REL=/nologo /MD /W3 /GX /O2 /I "../win32" /I "../../libsamplerate/src" /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /Fp"$(INTDIR_REL)\libsamplerate_static.pch" /YX /Fo"$(INTDIR_REL)\\" /Fd"$(INTDIR_REL)\\" /FD /c
+
+LIB32_FLAGS_REL=/nologo /out:$(LIB_REL)
+LIB32_OBJS_REL= \
+ "$(INTDIR_REL)\samplerate.obj" \
+ "$(INTDIR_REL)\src_linear.obj" \
+ "$(INTDIR_REL)\src_sinc.obj" \
+ "$(INTDIR_REL)\src_zoh.obj"
+
+$(LIB_REL) : "$(OUTDIR_REL)" $(DEF_FILE) $(LIB32_OBJS_REL)
+ $(LIB32) @<<
+ $(LIB32_FLAGS_REL) $(DEF_FLAGS) $(LIB32_OBJS_REL)
+<<
+
+"$(OUTDIR_DEB)" :
+ if not exist "$(OUTDIR_DEB)/$(NULL)" mkdir "$(OUTDIR_DEB)"
+
+CPP_PROJ_DEB=/nologo /MTd /W3 /Gm /GX /ZI /Od /I "../win32" /I "../../libsamplerate/src" /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /Fp"$(INTDIR_DEB)\libsamplerate_static.pch" /YX /Fo"$(INTDIR_DEB)\\" /Fd"$(INTDIR_DEB)\\" /FD /GZ /c
+LIB32_FLAGS_DEB=/nologo /out:$(LIB_DEB)
+LIB32_OBJS_DEB= \
+ "$(INTDIR_DEB)\samplerate.obj" \
+ "$(INTDIR_DEB)\src_linear.obj" \
+ "$(INTDIR_DEB)\src_sinc.obj" \
+ "$(INTDIR_DEB)\src_zoh.obj"
+
+$(LIB_DEB) : "$(OUTDIR_DEB)" $(DEF_FILE) $(LIB32_OBJS_DEB)
+ $(LIB32) @<<
+ $(LIB32_FLAGS_DEB) $(DEF_FLAGS) $(LIB32_OBJS_DEB)
+<<
+
+
+..\..\libsamplerate\src\samplerate.c : \
+ "..\..\libsamplerate\src\common.h"\
+ "..\..\libsamplerate\src\config.h"\
+ "..\..\libsamplerate\src\float_cast.h"\
+ "..\..\libsamplerate\src\samplerate.h"\
+
+
+..\..\libsamplerate\src\src_linear.c : \
+ "..\..\libsamplerate\src\common.h"\
+ "..\..\libsamplerate\src\config.h"\
+ "..\..\libsamplerate\src\float_cast.h"\
+ "..\..\libsamplerate\src\samplerate.h"\
+
+
+..\..\libsamplerate\src\src_sinc.c : \
+ "..\..\libsamplerate\src\common.h"\
+ "..\..\libsamplerate\src\config.h"\
+ "..\..\libsamplerate\src\fastest_coeffs.h"\
+ "..\..\libsamplerate\src\float_cast.h"\
+ "..\..\libsamplerate\src\high_qual_coeffs.h"\
+ "..\..\libsamplerate\src\mid_qual_coeffs.h"\
+ "..\..\libsamplerate\src\samplerate.h"\
+
+
+..\..\libsamplerate\src\src_zoh.c : \
+ "..\..\libsamplerate\src\common.h"\
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+ "..\..\libsamplerate\src\float_cast.h"\
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+
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+ $(CPP) $(CPP_PROJ_DEB) $(SOURCE)
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+ $(CPP) $(CPP_PROJ_REL) $(SOURCE)
+
+
+SOURCE=..\..\libsamplerate\src\src_zoh.c
+
+"$(INTDIR_DEB)\src_zoh.obj" : $(SOURCE) "$(INTDIR_DEB)"
+ $(CPP) $(CPP_PROJ_DEB) $(SOURCE)
+"$(INTDIR_REL)\src_zoh.obj" : $(SOURCE) "$(INTDIR_REL)"
+ $(CPP) $(CPP_PROJ_REL) $(SOURCE)
+
+
+
diff --git a/third_party/build/samplerate/libsamplerate_static.dsp b/third_party/build/samplerate/libsamplerate_static.dsp
new file mode 100644
index 0000000..54ac8e3
--- /dev/null
+++ b/third_party/build/samplerate/libsamplerate_static.dsp
@@ -0,0 +1,114 @@
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+!MESSAGE "libsamplerate_static - Win32 Debug" (based on "Win32 (x86) Static Library")
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