239 lines
6.3 KiB
C
239 lines
6.3 KiB
C
/*
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** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <samplerate.h>
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#include "util.h"
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#define BUFFER_LEN 2048
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#define CB_READ_LEN 256
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static void process_reset_test (int converter) ;
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static void callback_reset_test (int converter) ;
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static float data_one [BUFFER_LEN] ;
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static float data_zero [BUFFER_LEN] ;
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int
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main (void)
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{
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puts ("") ;
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process_reset_test (SRC_ZERO_ORDER_HOLD) ;
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process_reset_test (SRC_LINEAR) ;
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process_reset_test (SRC_SINC_FASTEST) ;
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callback_reset_test (SRC_ZERO_ORDER_HOLD) ;
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callback_reset_test (SRC_LINEAR) ;
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callback_reset_test (SRC_SINC_FASTEST) ;
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puts ("") ;
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return 0 ;
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} /* main */
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static void
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process_reset_test (int converter)
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{ static float output [BUFFER_LEN] ;
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SRC_STATE *src_state ;
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SRC_DATA src_data ;
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int k, error ;
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printf ("\tprocess_reset_test (%-28s) ....... ", src_get_name (converter)) ;
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fflush (stdout) ;
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for (k = 0 ; k < BUFFER_LEN ; k++)
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{ data_one [k] = 1.0 ;
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data_zero [k] = 0.0 ;
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} ;
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/* Get a converter. */
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if ((src_state = src_new (converter, 1, &error)) == NULL)
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{ printf ("\n\nLine %d : src_new() failed : %s.\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Process a bunch of 1.0 valued samples. */
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src_data.data_in = data_one ;
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src_data.data_out = output ;
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src_data.input_frames = BUFFER_LEN ;
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src_data.output_frames = BUFFER_LEN ;
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src_data.src_ratio = 0.9 ;
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src_data.end_of_input = 1 ;
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if ((error = src_process (src_state, &src_data)) != 0)
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{ printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Reset the state of the converter.*/
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src_reset (src_state) ;
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/* Now process some zero data. */
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src_data.data_in = data_zero ;
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src_data.data_out = output ;
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src_data.input_frames = BUFFER_LEN ;
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src_data.output_frames = BUFFER_LEN ;
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src_data.src_ratio = 0.9 ;
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src_data.end_of_input = 1 ;
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if ((error = src_process (src_state, &src_data)) != 0)
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{ printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Finally make sure that the output data is zero ie reset was sucessful. */
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for (k = 0 ; k < BUFFER_LEN / 2 ; k++)
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if (output [k] != 0.0)
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{ printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n", __LINE__, k, output [k]) ;
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exit (1) ;
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} ;
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/* Make sure that this function has been exported. */
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src_set_ratio (src_state, 1.0) ;
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/* Delete converter. */
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src_state = src_delete (src_state) ;
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puts ("ok") ;
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} /* process_reset_test */
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/*==============================================================================
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*/
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typedef struct
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{ int channels ;
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long count, total ;
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float *data ;
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} TEST_CB_DATA ;
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static long
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test_callback_func (void *cb_data, float **data)
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{ TEST_CB_DATA *pcb_data ;
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long frames ;
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if ((pcb_data = cb_data) == NULL)
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return 0 ;
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if (data == NULL)
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return 0 ;
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if (pcb_data->total - pcb_data->count > 0)
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frames = pcb_data->total - pcb_data->count ;
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else
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frames = 0 ;
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*data = pcb_data->data + pcb_data->count ;
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pcb_data->count += frames ;
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return frames ;
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} /* test_callback_func */
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static void
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callback_reset_test (int converter)
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{ static TEST_CB_DATA test_callback_data ;
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static float output [BUFFER_LEN] ;
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SRC_STATE *src_state ;
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double src_ratio = 1.1 ;
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long read_count, read_total ;
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int k, error ;
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printf ("\tcallback_reset_test (%-28s) ....... ", src_get_name (converter)) ;
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fflush (stdout) ;
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for (k = 0 ; k < ARRAY_LEN (data_one) ; k++)
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{ data_one [k] = 1.0 ;
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data_zero [k] = 0.0 ;
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} ;
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if ((src_state = src_callback_new (test_callback_func, converter, 1, &error, &test_callback_data)) == NULL)
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Process a bunch of 1.0 valued samples. */
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test_callback_data.channels = 1 ;
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test_callback_data.count = 0 ;
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test_callback_data.total = ARRAY_LEN (data_one) ;
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test_callback_data.data = data_one ;
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read_total = 0 ;
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do
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{ read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ;
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read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ;
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read_total += read_count ;
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}
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while (read_count > 0) ;
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/* Check for errors. */
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if ((error = src_error (src_state)) != 0)
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Reset the state of the converter.*/
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src_reset (src_state) ;
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/* Process a bunch of 0.0 valued samples. */
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test_callback_data.channels = 1 ;
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test_callback_data.count = 0 ;
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test_callback_data.total = ARRAY_LEN (data_zero) ;
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test_callback_data.data = data_zero ;
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/* Now process some zero data. */
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read_total = 0 ;
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do
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{ read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ;
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read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ;
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read_total += read_count ;
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}
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while (read_count > 0) ;
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/* Check for errors. */
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if ((error = src_error (src_state)) != 0)
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Finally make sure that the output data is zero ie reset was sucessful. */
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for (k = 0 ; k < BUFFER_LEN / 2 ; k++)
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if (output [k] != 0.0)
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{ printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n\n", __LINE__, k, output [k]) ;
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save_oct_float ("output.dat", data_one, ARRAY_LEN (data_one), output, ARRAY_LEN (output)) ;
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exit (1) ;
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} ;
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/* Make sure that this function has been exported. */
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src_set_ratio (src_state, 1.0) ;
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/* Delete converter. */
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src_state = src_delete (src_state) ;
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puts ("ok") ;
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} /* callback_reset_test */
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