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134 lines
4.1 KiB
134 lines
4.1 KiB
/*
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** Copyright (c) 2002-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
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** All rights reserved.
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**
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** This code is released under 2-clause BSD license. Please see the
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** file at : https://github.com/libsndfile/libsamplerate/blob/master/COPYING
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <samplerate.h>
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#include "util.h"
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#define BUFFER_LEN (1 << 16)
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#define NUM_CHANNELS 2
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#define FRAMES_PER_PASS (BUFFER_LEN >> 1)
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static void
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clone_test (int converter)
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{ static float input_serial [BUFFER_LEN * NUM_CHANNELS], input_interleaved [BUFFER_LEN * NUM_CHANNELS] ;
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static float output [BUFFER_LEN * NUM_CHANNELS], output_cloned [BUFFER_LEN * NUM_CHANNELS] ;
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double sine_freq ;
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SRC_STATE* src_state ;
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SRC_STATE* src_state_cloned ;
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SRC_DATA src_data, src_data_cloned ;
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int error, frame, ch, idx ;
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printf (" clone_test (%-28s) ....... ", src_get_name (converter)) ;
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fflush (stdout) ;
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memset (input_serial, 0, sizeof (input_serial)) ;
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memset (input_interleaved, 0, sizeof (input_interleaved)) ;
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memset (output, 0, sizeof (output)) ;
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memset (output_cloned, 0, sizeof (output_cloned)) ;
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/* Fill input buffer with an n-channel interleaved sine wave */
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sine_freq = 0.0111 ;
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gen_windowed_sines (1, &sine_freq, 1.0, input_serial, BUFFER_LEN) ;
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gen_windowed_sines (1, &sine_freq, 1.0, input_serial + BUFFER_LEN, BUFFER_LEN) ;
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interleave_data (input_serial, input_interleaved, BUFFER_LEN, NUM_CHANNELS) ;
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if ((src_state = src_new (converter, NUM_CHANNELS, &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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/* Perform initial pass using first half of buffer so that src_state has non-trivial state */
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src_data.src_ratio = 1.1 ;
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src_data.input_frames = FRAMES_PER_PASS ;
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src_data.output_frames = FRAMES_PER_PASS ;
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src_data.data_in = input_interleaved ;
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src_data.data_out = output ;
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src_data.output_frames_gen = 0 ;
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if ((error = src_process (src_state, &src_data)))
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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printf (" src_data.input_frames : %ld\n", src_data.input_frames) ;
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printf (" src_data.output_frames : %ld\n\n", src_data.output_frames) ;
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exit (1) ;
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} ;
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/* Clone handle */
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if ((src_state_cloned = src_clone (src_state, &error)) == NULL)
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{ printf ("\n\nLine %d : src_clone() failed : %s\n\n", __LINE__, src_strerror (error)) ;
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exit (1) ;
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} ;
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/* Process second half of buffer with both handles */
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src_data.data_in = input_interleaved + FRAMES_PER_PASS ;
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src_data_cloned = src_data ;
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src_data_cloned.data_out = output_cloned ;
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if ((error = src_process (src_state, &src_data)))
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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printf (" src_data.input_frames : %ld\n", src_data.input_frames) ;
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printf (" src_data.output_frames : %ld\n\n", src_data.output_frames) ;
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exit (1) ;
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} ;
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if ((error = src_process (src_state_cloned, &src_data_cloned)))
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{ printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
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printf (" src_data.input_frames : %ld\n", src_data.input_frames) ;
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printf (" src_data.output_frames : %ld\n\n", src_data.output_frames) ;
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exit (1) ;
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} ;
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/* Check that both handles generated the same number of output frames */
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if (src_data.output_frames_gen != src_data_cloned.output_frames_gen)
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{ printf ("\n\nLine %d : cloned output_frames_gen (%ld) != original (%ld)\n\n", __LINE__,
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src_data_cloned.output_frames_gen, src_data.output_frames_gen) ;
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exit (1) ;
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} ;
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for (ch = 0 ; ch < NUM_CHANNELS ; ch++)
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{ for (frame = 0 ; frame < src_data.output_frames_gen ; frame++)
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{ idx = ch * NUM_CHANNELS + ch ;
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if (output[idx] != output_cloned[idx])
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{ printf ("\n\nLine %d : cloned data does not equal original data at channel %d, frame %d\n\n",
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__LINE__, ch, frame) ;
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exit (1) ;
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} ;
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} ;
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} ;
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src_delete (src_state) ;
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src_delete (src_state_cloned) ;
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puts ("ok") ;
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} /* clone_test */
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int
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main (void)
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{
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puts("");
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clone_test (SRC_ZERO_ORDER_HOLD) ;
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clone_test (SRC_LINEAR) ;
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#ifdef ENABLE_SINC_FAST_CONVERTER
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clone_test (SRC_SINC_FASTEST) ;
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#endif
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puts("");
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return 0 ;
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} /* main */
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