X-Git-Url: http://git.ieval.ro/?a=blobdiff_plain;f=libsamplerate%2Ftests%2Freset_test.c;fp=libsamplerate%2Ftests%2Freset_test.c;h=f7eafdd1fd427bc7da33be96a89af5bfb6a76058;hb=8529da432e52c7903e8ef3488e60725a099e6e63;hp=0000000000000000000000000000000000000000;hpb=27013d8f68878b8ed2d3f747e26f562d08d7d678;p=audio-libsamplerate.git diff --git a/libsamplerate/tests/reset_test.c b/libsamplerate/tests/reset_test.c new file mode 100644 index 0000000..f7eafdd --- /dev/null +++ b/libsamplerate/tests/reset_test.c @@ -0,0 +1,228 @@ +/* +** 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 "util.h" + +#define BUFFER_LEN 2048 +#define CB_READ_LEN 256 + +static void process_reset_test (int converter) ; +static void callback_reset_test (int converter) ; + +static float data_one [BUFFER_LEN] ; +static float data_zero [BUFFER_LEN] ; + +int +main (void) +{ + puts ("") ; + + process_reset_test (SRC_ZERO_ORDER_HOLD) ; + process_reset_test (SRC_LINEAR) ; + process_reset_test (SRC_SINC_FASTEST) ; + + callback_reset_test (SRC_ZERO_ORDER_HOLD) ; + callback_reset_test (SRC_LINEAR) ; + callback_reset_test (SRC_SINC_FASTEST) ; + + puts ("") ; + + return 0 ; +} /* main */ + +static void +process_reset_test (int converter) +{ static float output [BUFFER_LEN] ; + + SRC_STATE *src_state ; + SRC_DATA src_data ; + int k, error ; + + printf ("\tprocess_reset_test (%-28s) ....... ", src_get_name (converter)) ; + fflush (stdout) ; + + for (k = 0 ; k < BUFFER_LEN ; k++) + { data_one [k] = 1.0 ; + data_zero [k] = 0.0 ; + } ; + + /* Get a converter. */ + 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) ; + } ; + + /* Process a bunch of 1.0 valued samples. */ + src_data.data_in = data_one ; + src_data.data_out = output ; + src_data.input_frames = BUFFER_LEN ; + src_data.output_frames = BUFFER_LEN ; + src_data.src_ratio = 0.9 ; + src_data.end_of_input = 1 ; + + if ((error = src_process (src_state, &src_data)) != 0) + { printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ; + exit (1) ; + } ; + + /* Reset the state of the converter.*/ + src_reset (src_state) ; + + /* Now process some zero data. */ + src_data.data_in = data_zero ; + src_data.data_out = output ; + src_data.input_frames = BUFFER_LEN ; + src_data.output_frames = BUFFER_LEN ; + src_data.src_ratio = 0.9 ; + src_data.end_of_input = 1 ; + + if ((error = src_process (src_state, &src_data)) != 0) + { printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ; + exit (1) ; + } ; + + /* Finally make sure that the output data is zero ie reset was sucessful. */ + for (k = 0 ; k < BUFFER_LEN / 2 ; k++) + if (output [k] != 0.0) + { printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n", __LINE__, k, output [k]) ; + exit (1) ; + } ; + + /* Make sure that this function has been exported. */ + src_set_ratio (src_state, 1.0) ; + + /* Delete converter. */ + src_state = src_delete (src_state) ; + + puts ("ok") ; +} /* process_reset_test */ + +/*============================================================================== +*/ + +typedef struct +{ int channels ; + long count, total ; + float *data ; +} TEST_CB_DATA ; + +static long +test_callback_func (void *cb_data, float **data) +{ TEST_CB_DATA *pcb_data ; + + long frames ; + + if ((pcb_data = cb_data) == NULL) + return 0 ; + + if (data == NULL) + return 0 ; + + if (pcb_data->total - pcb_data->count > 0) + frames = pcb_data->total - pcb_data->count ; + else + frames = 0 ; + + *data = pcb_data->data + pcb_data->count ; + pcb_data->count += frames ; + + return frames ; +} /* test_callback_func */ + +static void +callback_reset_test (int converter) +{ static TEST_CB_DATA test_callback_data ; + + static float output [BUFFER_LEN] ; + + SRC_STATE *src_state ; + + double src_ratio = 1.1 ; + long read_count, read_total ; + int k, error ; + + printf ("\tcallback_reset_test (%-28s) ....... ", src_get_name (converter)) ; + fflush (stdout) ; + + for (k = 0 ; k < ARRAY_LEN (data_one) ; k++) + { data_one [k] = 1.0 ; + data_zero [k] = 0.0 ; + } ; + + if ((src_state = src_callback_new (test_callback_func, converter, 1, &error, &test_callback_data)) == NULL) + { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; + exit (1) ; + } ; + + /* Process a bunch of 1.0 valued samples. */ + test_callback_data.channels = 1 ; + test_callback_data.count = 0 ; + test_callback_data.total = ARRAY_LEN (data_one) ; + test_callback_data.data = data_one ; + + read_total = 0 ; + do + { read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ; + read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ; + read_total += read_count ; + } + while (read_count > 0) ; + + /* Check for errors. */ + if ((error = src_error (src_state)) != 0) + { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; + exit (1) ; + } ; + + /* Reset the state of the converter.*/ + src_reset (src_state) ; + + /* Process a bunch of 0.0 valued samples. */ + test_callback_data.channels = 1 ; + test_callback_data.count = 0 ; + test_callback_data.total = ARRAY_LEN (data_zero) ; + test_callback_data.data = data_zero ; + + /* Now process some zero data. */ + read_total = 0 ; + do + { read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ; + read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ; + read_total += read_count ; + } + while (read_count > 0) ; + + /* Check for errors. */ + if ((error = src_error (src_state)) != 0) + { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; + exit (1) ; + } ; + + /* Finally make sure that the output data is zero ie reset was sucessful. */ + for (k = 0 ; k < BUFFER_LEN / 2 ; k++) + if (output [k] != 0.0) + { printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n\n", __LINE__, k, output [k]) ; + save_oct_float ("output.dat", data_one, ARRAY_LEN (data_one), output, ARRAY_LEN (output)) ; + exit (1) ; + } ; + + /* Make sure that this function has been exported. */ + src_set_ratio (src_state, 1.0) ; + + /* Delete converter. */ + src_state = src_delete (src_state) ; + + puts ("ok") ; +} /* callback_reset_test */ + +