ref: 277998ed89b151c9654c600749021757b4e579c4
parent: d7c67713bdd253b9b180939a39bc0b672f124c67
author: Erik de Castro Lopo <erikd@mingus>
date: Thu Mar 30 18:59:06 EST 2006
Add new varispeed test (not working yet).
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2006-03-31 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
+
+ * src/common.h src/src_*.c src/samplerate.c
+ Add slots for vari_process and const_process functions.
+
+ * tests/varispeed_test.c tests/Makefile.am
+ Add new test and hook into build.
+
2005-12-29 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/sndfile-resample.c
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -35,6 +35,9 @@
float_short_test_SOURCES = float_short_test.c util.c util.h
float_short_test_LDADD = $(SAMPLRATEDIR)/libsamplerate.la
+varispeed_test_SOURCES = varispeed_test.c util.c util.h
+varispeed_test_LDADD = $(SAMPLRATEDIR)/libsamplerate.la
+
# This program is for evaluating other sample rate converters.
src_evaluate_SOURCES = src-evaluate.c calc_snr.c util.c
--- /dev/null
+++ b/tests/varispeed_test.c
@@ -1,0 +1,197 @@
+/*
+** Copyright (C) 2006 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** 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 <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include <samplerate.h>
+
+#include "util.h"
+
+#define BUFFER_LEN ((1 << 16) - 20)
+
+static void varispeed_test (int converter) ;
+
+int
+main (void)
+{+ puts (" Zero Order Hold interpolator: ") ;+ varispeed_test (SRC_ZERO_ORDER_HOLD) ;
+
+ puts (" Linear interpolator: ") ;+ varispeed_test (SRC_LINEAR) ;
+
+ puts (" Sinc interpolator: ") ;+ varispeed_test (SRC_SINC_FASTEST) ;
+
+ return 0 ;
+} /* main */
+
+static void
+varispeed_test (int converter)
+{ static float input [BUFFER_LEN], output [BUFFER_LEN] ;+ double src_ratio ;
+
+ SRC_STATE *src_state ;
+ SRC_DATA src_data ;
+
+ int input_len, output_len, current_in, current_out ;
+ int k, error, terminate ;
+
+/* Erik */
+for (k = 0 ; k < BUFFER_LEN ; k++) input [k] = k * 1.0 ;
+
+ /* Calculate maximun input and output lengths. */
+ if (src_ratio >= 1.0)
+ { output_len = BUFFER_LEN ;+ input_len = (int) floor (BUFFER_LEN / src_ratio) ;
+ }
+ else
+ { input_len = BUFFER_LEN ;+ output_len = (int) floor (BUFFER_LEN * src_ratio) ;
+ } ;
+
+ /* Reduce input_len by 10 so output is longer than necessary. */
+ input_len -= 20 ;
+
+ if (output_len > BUFFER_LEN)
+ { printf ("\n\nLine %d : output_len > BUFFER_LEN\n\n", __LINE__) ;+ exit (1) ;
+ } ;
+
+ current_in = current_out = 0 ;
+
+ /* Perform sample rate conversion. */
+ if ((src_state = src_new (converter, 1, &error)) == NULL)
+ { printf ("\n\nLine %d : src_new() failed : %s\n\n", __LINE__, src_strerror (error)) ;+ exit (1) ;
+ } ;
+
+ src_data.end_of_input = 0 ; /* Set this later. */
+
+ src_data.data_in = input ;
+
+ src_data.src_ratio = src_ratio ;
+
+ src_data.data_out = output ;
+ src_data.output_frames = ARRAY_LEN (output) / 10 ;
+
+ terminate = 1 + (int) ceil ((src_ratio >= 1.0) ? src_ratio : 1.0 / src_ratio) ;
+
+ while (1)
+ {+ src_data.input_frames = next_block_length (0) ;
+ src_data.input_frames = MIN (src_data.input_frames, input_len - current_in) ;
+
+ src_data.output_frames = ARRAY_LEN (output) - current_out ;
+ /*-Erik MIN (src_data.output_frames, output_len - current_out) ;-*/
+
+ src_data.end_of_input = (current_in >= input_len) ? 1 : 0 ;
+
+ if ((error = src_process (src_state, &src_data)))
+ { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;+ printf (" src_data.input_frames : %ld\n", src_data.input_frames) ;+ printf (" src_data.output_frames : %ld\n\n", src_data.output_frames) ;+ exit (1) ;
+ } ;
+
+ if (src_data.end_of_input && src_data.output_frames_gen == 0)
+ break ;
+
+ if (src_data.input_frames_used > src_data.input_frames)
+ { printf ("\n\nLine %d : input_frames_used > input_frames\n\n", __LINE__) ;+ printf (" src_data.input_frames : %ld\n", src_data.input_frames) ;+ printf (" src_data.input_frames_used : %ld\n", src_data.input_frames_used) ;+ printf (" src_data.output_frames : %ld\n", src_data.output_frames) ;+ printf (" src_data.output_frames_gen : %ld\n\n", src_data.output_frames_gen) ;+ exit (1) ;
+ } ;
+
+ if (src_data.input_frames_used < 0)
+ { printf ("\n\nLine %d : input_frames_used (%ld) < 0\n\n", __LINE__, src_data.input_frames_used) ;+ exit (1) ;
+ } ;
+
+ if (src_data.output_frames_gen < 0)
+ { printf ("\n\nLine %d : output_frames_gen (%ld) < 0\n\n", __LINE__, src_data.output_frames_gen) ;+ exit (1) ;
+ } ;
+
+ current_in += src_data.input_frames_used ;
+ current_out += src_data.output_frames_gen ;
+
+ if (current_in > input_len + terminate)
+ { printf ("\n\nLine %d : current_in (%d) > input_len (%d + %d)\n\n", __LINE__, current_in, input_len, terminate) ;+ exit (1) ;
+ } ;
+
+ if (current_out > output_len)
+ { printf ("\n\nLine %d : current_out (%d) > output_len (%d)\n\n", __LINE__, current_out, output_len) ;+ exit (1) ;
+ } ;
+
+ if (src_data.input_frames_used > input_len)
+ { printf ("\n\nLine %d : input_frames_used (%ld) > %d\n\n", __LINE__, src_data.input_frames_used, input_len) ;+ exit (1) ;
+ } ;
+
+ if (src_data.output_frames_gen > output_len)
+ { printf ("\n\nLine %d : output_frames_gen (%ld) > %d\n\n", __LINE__, src_data.output_frames_gen, output_len) ;+ exit (1) ;
+ } ;
+
+ if (src_data.data_in == NULL && src_data.output_frames_gen == 0)
+ break ;
+
+
+ src_data.data_in += src_data.input_frames_used ;
+ src_data.data_out += src_data.output_frames_gen ;
+ } ;
+
+ src_state = src_delete (src_state) ;
+
+ if (fabs (current_out - src_ratio * input_len) > terminate)
+ { printf ("\n\nLine %d : bad output data length %d should be %2.1f +/- %d.\n", __LINE__,+ current_out, src_ratio * input_len, terminate) ;
+ printf ("\tsrc_ratio : %.4f\n", src_ratio) ;+ printf ("\tinput_len : %d\n\tinput_used : %d\n", input_len, current_in) ;+ printf ("\toutput_len : %d\n\toutput_gen : %d\n\n", output_len, current_out) ;+ exit (1) ;
+ } ;
+
+ if (current_in != input_len)
+ { printf ("\n\nLine %d : unused input.\n", __LINE__) ;+ printf ("\tinput_len : %d\n", input_len) ;+ printf ("\tinput_frames_used : %d\n\n", current_in) ;+ exit (1) ;
+ } ;
+
+ puts ("ok") ;+
+ return ;
+} /* varispeed_test */
+
+/*
+** Do not edit or modify anything in this comment block.
+** The arch-tag line is a file identity tag for the GNU Arch
+** revision control system.
+**
+** arch-tag: 0c9492de-9c59-4690-ba38-f384b547dc74
+*/
+