X-Git-Url: http://git.ieval.ro/?a=blobdiff_plain;f=libsamplerate%2Ftests%2Ftermination_test.c;fp=libsamplerate%2Ftests%2Ftermination_test.c;h=caffec407eb1abc4eee81ba369e7fd2563e7aac1;hb=8529da432e52c7903e8ef3488e60725a099e6e63;hp=0000000000000000000000000000000000000000;hpb=27013d8f68878b8ed2d3f747e26f562d08d7d678;p=audio-libsamplerate.git diff --git a/libsamplerate/tests/termination_test.c b/libsamplerate/tests/termination_test.c new file mode 100644 index 0000000..caffec4 --- /dev/null +++ b/libsamplerate/tests/termination_test.c @@ -0,0 +1,329 @@ +/* +** Copyright (c) 2002-2016, Erik de Castro Lopo +** All rights reserved. +** +** This code is released under 2-clause BSD license. Please see the +** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING +*/ + +#include +#include +#include + +#include + +#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) +{ + int ilen = 199030, olen = 1000, 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 * 1.0 ; + + /* 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 */ +