ref: ca5618deb1a747f3b46f6240a2b232e632c37b0e
dir: /tests/termination_test.c/
/* ** Copyright (c) 2002-2016, Erik de Castro Lopo <[email protected]> ** All rights reserved. ** ** This code is released under 2-clause BSD license. Please see the ** file at : https://github.com/libsndfile/libsamplerate/blob/master/COPYING */ #include <stdio.h> #include <stdlib.h> #include <math.h> #include <samplerate.h> #include "util.h" #define SHORT_BUFFER_LEN 2048 #define LONG_BUFFER_LEN ((1 << 16) - 20) static void simple_test (int converter) ; static void stream_test (int converter, double ratio) ; static void init_term_test (int converter, double ratio) ; static int next_block_length (int reset) ; int main (void) { static double src_ratios [] = { 0.999900, 1.000100, 0.789012, 1.200000, 0.333333, 3.100000, 0.125000, 8.000000, 0.099900, 9.990000, 0.100000, 10.00000 } ; int k ; puts ("\n Zero Order Hold interpolator:") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) init_term_test (SRC_ZERO_ORDER_HOLD, src_ratios [k]) ; puts ("") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) stream_test (SRC_ZERO_ORDER_HOLD, src_ratios [k]) ; puts ("\n Linear interpolator:") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) init_term_test (SRC_LINEAR, src_ratios [k]) ; puts ("") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) stream_test (SRC_LINEAR, src_ratios [k]) ; puts ("\n Sinc interpolator:") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) init_term_test (SRC_SINC_FASTEST, src_ratios [k]) ; puts ("") ; for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) stream_test (SRC_SINC_FASTEST, src_ratios [k]) ; puts ("") ; simple_test (SRC_SINC_FASTEST) ; return 0 ; } /* main */ static void simple_test (int converter) { // MSVC doesn't support variable-length arrays #define ilen 199030 #define olen 1000 int error ; { float in [ilen] ; float out [olen] ; double ratio = (1.0 * olen) / ilen ; SRC_DATA src_data = { in, out, ilen, olen, 0, 0, 0, ratio } ; error = src_simple (&src_data, converter, 1) ; if (error) { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; exit (1) ; } ; } ; return ; } /* simple_test */ static void init_term_test (int converter, double src_ratio) { static float input [SHORT_BUFFER_LEN], output [SHORT_BUFFER_LEN] ; SRC_DATA src_data ; int k, input_len, output_len, error, terminate ; printf ("\tinit_term_test (SRC ratio = %7.4f) .......... ", src_ratio) ; fflush (stdout) ; /* Calculate maximun input and output lengths. */ if (src_ratio >= 1.0) { output_len = SHORT_BUFFER_LEN ; input_len = (int) floor (SHORT_BUFFER_LEN / src_ratio) ; } else { input_len = SHORT_BUFFER_LEN ; output_len = (int) floor (SHORT_BUFFER_LEN * src_ratio) ; } ; /* Reduce input_len by 10 so output is longer than necessary. */ input_len -= 10 ; for (k = 0 ; k < ARRAY_LEN (input) ; k++) input [k] = 1.0 ; if (output_len > SHORT_BUFFER_LEN) { printf ("\n\nLine %d : output_len > SHORT_BUFFER_LEN\n\n", __LINE__) ; exit (1) ; } ; src_data.data_in = input ; src_data.input_frames = input_len ; src_data.src_ratio = src_ratio ; src_data.data_out = output ; src_data.output_frames = SHORT_BUFFER_LEN ; if ((error = src_simple (&src_data, converter, 1))) { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; exit (1) ; } ; terminate = (int) ceil ((src_ratio >= 1.0) ? 1 : 1.0 / src_ratio) ; if (fabs (src_ratio * input_len - src_data.output_frames_gen) > terminate) { printf ("\n\nLine %d : Bad output frame count.\n\n", __LINE__) ; printf ("\tterminate : %d\n", terminate) ; printf ("\tsrc_ratio : %.4f\n", src_ratio) ; printf ("\tinput_len : %d\n" "\tinput_len * src_ratio : %f\n", input_len, input_len * src_ratio) ; printf ("\toutput_frames_gen : %ld\n\n", src_data.output_frames_gen) ; exit (1) ; } ; if (labs (src_data.input_frames_used - input_len) > 1) { printf ("\n\nLine %d : input_frames_used should be %d, is %ld.\n\n", __LINE__, input_len, src_data.input_frames_used) ; printf ("\tsrc_ratio : %.4f\n", src_ratio) ; printf ("\tinput_len : %d\n\tinput_used : %ld\n\n", input_len, src_data.input_frames_used) ; exit (1) ; } ; if (fabs (output [0]) < 0.1) { printf ("\n\nLine %d : First output sample is bad.\n\n", __LINE__) ; printf ("\toutput [0] == %f\n\n", output [0]) ; exit (1) ; } puts ("ok") ; return ; } /* init_term_test */ static void stream_test (int converter, double src_ratio) { static float input [LONG_BUFFER_LEN], output [LONG_BUFFER_LEN] ; SRC_STATE *src_state ; SRC_DATA src_data ; int input_len, output_len, current_in, current_out ; int k, error, terminate ; printf ("\tstream_test (SRC ratio = %7.4f) .......... ", src_ratio) ; fflush (stdout) ; /* Erik */ for (k = 0 ; k < LONG_BUFFER_LEN ; k++) input [k] = k * 1.0f ; /* Calculate maximun input and output lengths. */ if (src_ratio >= 1.0) { output_len = LONG_BUFFER_LEN ; input_len = (int) floor (LONG_BUFFER_LEN / src_ratio) ; } else { input_len = LONG_BUFFER_LEN ; output_len = (int) floor (LONG_BUFFER_LEN * src_ratio) ; } ; /* Reduce input_len by 10 so output is longer than necessary. */ input_len -= 20 ; if (output_len > LONG_BUFFER_LEN) { printf ("\n\nLine %d : output_len > LONG_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 ; } /* stream_test */ static int next_block_length (int reset) { static int block_lengths [] = /* Should be an odd length. */ { /*-2, 500, 5, 400, 10, 300, 20, 200, 50, 100, 70 -*/ 5, 400, 10, 300, 20, 200, 50, 100, 70 } ; static int block_len_index = 0 ; if (reset) block_len_index = 0 ; else block_len_index = (block_len_index + 1) % ARRAY_LEN (block_lengths) ; return block_lengths [block_len_index] ; } /* next_block_length */