cannam@85: /* cannam@85: ** Copyright (C) 2003-2011 Erik de Castro Lopo cannam@85: ** cannam@85: ** This program is free software; you can redistribute it and/or modify cannam@85: ** it under the terms of the GNU General Public License as published by cannam@85: ** the Free Software Foundation; either version 2 of the License, or cannam@85: ** (at your option) any later version. cannam@85: ** cannam@85: ** This program is distributed in the hope that it will be useful, cannam@85: ** but WITHOUT ANY WARRANTY; without even the implied warranty of cannam@85: ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the cannam@85: ** GNU General Public License for more details. cannam@85: ** cannam@85: ** You should have received a copy of the GNU General Public License cannam@85: ** along with this program; if not, write to the Free Software cannam@85: ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. cannam@85: */ cannam@85: cannam@85: #include cannam@85: #include cannam@85: #include cannam@85: #include cannam@85: cannam@85: #include cannam@85: cannam@85: #include "util.h" cannam@85: cannam@85: #define BUFFER_LEN 10000 cannam@85: #define CB_READ_LEN 256 cannam@85: cannam@85: static void callback_test (int converter, double ratio) ; cannam@85: static void end_of_stream_test (int converter) ; cannam@85: cannam@85: int cannam@85: main (void) cannam@85: { static double src_ratios [] = cannam@85: { 1.0, 0.099, 0.1, 0.33333333, 0.789, 1.0001, 1.9, 3.1, 9.9 cannam@85: } ; cannam@85: cannam@85: int k ; cannam@85: cannam@85: puts ("") ; cannam@85: cannam@85: puts (" Zero Order Hold interpolator :") ; cannam@85: for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) cannam@85: callback_test (SRC_ZERO_ORDER_HOLD, src_ratios [k]) ; cannam@85: cannam@85: puts (" Linear interpolator :") ; cannam@85: for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) cannam@85: callback_test (SRC_LINEAR, src_ratios [k]) ; cannam@85: cannam@85: puts (" Sinc interpolator :") ; cannam@85: for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++) cannam@85: callback_test (SRC_SINC_FASTEST, src_ratios [k]) ; cannam@85: cannam@85: puts ("") ; cannam@85: cannam@85: puts (" End of stream test :") ; cannam@85: end_of_stream_test (SRC_ZERO_ORDER_HOLD) ; cannam@85: end_of_stream_test (SRC_LINEAR) ; cannam@85: end_of_stream_test (SRC_SINC_FASTEST) ; cannam@85: cannam@85: puts ("") ; cannam@85: return 0 ; cannam@85: } /* main */ cannam@85: cannam@85: /*===================================================================================== cannam@85: */ cannam@85: cannam@85: typedef struct cannam@85: { int channels ; cannam@85: long count, total ; cannam@85: int end_of_data ; cannam@85: float data [BUFFER_LEN] ; cannam@85: } TEST_CB_DATA ; cannam@85: cannam@85: static long cannam@85: test_callback_func (void *cb_data, float **data) cannam@85: { TEST_CB_DATA *pcb_data ; cannam@85: cannam@85: long frames ; cannam@85: cannam@85: if ((pcb_data = cb_data) == NULL) cannam@85: return 0 ; cannam@85: cannam@85: if (data == NULL) cannam@85: return 0 ; cannam@85: cannam@85: if (pcb_data->total - pcb_data->count > CB_READ_LEN) cannam@85: frames = CB_READ_LEN / pcb_data->channels ; cannam@85: else cannam@85: frames = (pcb_data->total - pcb_data->count) / pcb_data->channels ; cannam@85: cannam@85: *data = pcb_data->data + pcb_data->count ; cannam@85: pcb_data->count += frames ; cannam@85: cannam@85: return frames ; cannam@85: } /* test_callback_func */ cannam@85: cannam@85: cannam@85: static void cannam@85: callback_test (int converter, double src_ratio) cannam@85: { static TEST_CB_DATA test_callback_data ; cannam@85: static float output [BUFFER_LEN] ; cannam@85: cannam@85: SRC_STATE *src_state ; cannam@85: cannam@85: long read_count, read_total ; cannam@85: int error ; cannam@85: cannam@85: printf ("\tcallback_test (SRC ratio = %6.4f) ........... ", src_ratio) ; cannam@85: fflush (stdout) ; cannam@85: cannam@85: test_callback_data.channels = 2 ; cannam@85: test_callback_data.count = 0 ; cannam@85: test_callback_data.end_of_data = 0 ; cannam@85: test_callback_data.total = ARRAY_LEN (test_callback_data.data) ; cannam@85: cannam@85: if ((src_state = src_callback_new (test_callback_func, converter, test_callback_data.channels, &error, &test_callback_data)) == NULL) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: read_total = 0 ; cannam@85: do cannam@85: { /* We will be throwing away output data, so just grab as much as possible. */ cannam@85: read_count = ARRAY_LEN (output) / test_callback_data.channels ; cannam@85: read_count = src_callback_read (src_state, src_ratio, read_count, output) ; cannam@85: read_total += read_count ; cannam@85: } cannam@85: while (read_count > 0) ; cannam@85: cannam@85: if ((error = src_error (src_state)) != 0) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: src_state = src_delete (src_state) ; cannam@85: cannam@85: if (fabs (read_total / src_ratio - ARRAY_LEN (test_callback_data.data)) > 2.0) cannam@85: { printf ("\n\nLine %d : input / output length mismatch.\n\n", __LINE__) ; cannam@85: printf (" input len : %d\n", ARRAY_LEN (test_callback_data.data)) ; cannam@85: printf (" output len : %ld (should be %g +/- 2)\n\n", read_total, cannam@85: floor (0.5 + src_ratio * ARRAY_LEN (test_callback_data.data))) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: puts ("ok") ; cannam@85: cannam@85: return ; cannam@85: } /* callback_test */ cannam@85: cannam@85: /*===================================================================================== cannam@85: */ cannam@85: cannam@85: static long cannam@85: eos_callback_func (void *cb_data, float **data) cannam@85: { cannam@85: TEST_CB_DATA *pcb_data ; cannam@85: long frames ; cannam@85: cannam@85: if (data == NULL) cannam@85: return 0 ; cannam@85: cannam@85: if ((pcb_data = cb_data) == NULL) cannam@85: return 0 ; cannam@85: cannam@85: /* cannam@85: ** Return immediately if there is no more data. cannam@85: ** In this case, the output pointer 'data' will not be set and cannam@85: ** valgrind should not warn about it. cannam@85: */ cannam@85: if (pcb_data->end_of_data) cannam@85: return 0 ; cannam@85: cannam@85: if (pcb_data->total - pcb_data->count > CB_READ_LEN) cannam@85: frames = CB_READ_LEN / pcb_data->channels ; cannam@85: else cannam@85: frames = (pcb_data->total - pcb_data->count) / pcb_data->channels ; cannam@85: cannam@85: *data = pcb_data->data + pcb_data->count ; cannam@85: pcb_data->count += frames ; cannam@85: cannam@85: /* cannam@85: ** Set end_of_data so that the next call to the callback function will cannam@85: ** return zero ocunt without setting the 'data' pointer. cannam@85: */ cannam@85: if (pcb_data->total < 2 * pcb_data->count) cannam@85: pcb_data->end_of_data = 1 ; cannam@85: cannam@85: return frames ; cannam@85: } /* eos_callback_data */ cannam@85: cannam@85: cannam@85: static void cannam@85: end_of_stream_test (int converter) cannam@85: { static TEST_CB_DATA test_callback_data ; cannam@85: static float output [BUFFER_LEN] ; cannam@85: cannam@85: SRC_STATE *src_state ; cannam@85: cannam@85: double src_ratio = 0.3 ; cannam@85: long read_count, read_total ; cannam@85: int error ; cannam@85: cannam@85: printf ("\t%-30s ........... ", src_get_name (converter)) ; cannam@85: fflush (stdout) ; cannam@85: cannam@85: test_callback_data.channels = 2 ; cannam@85: test_callback_data.count = 0 ; cannam@85: test_callback_data.end_of_data = 0 ; cannam@85: test_callback_data.total = ARRAY_LEN (test_callback_data.data) ; cannam@85: cannam@85: if ((src_state = src_callback_new (eos_callback_func, converter, test_callback_data.channels, &error, &test_callback_data)) == NULL) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: read_total = 0 ; cannam@85: do cannam@85: { /* We will be throwing away output data, so just grab as much as possible. */ cannam@85: read_count = ARRAY_LEN (output) / test_callback_data.channels ; cannam@85: read_count = src_callback_read (src_state, src_ratio, read_count, output) ; cannam@85: read_total += read_count ; cannam@85: } cannam@85: while (read_count > 0) ; cannam@85: cannam@85: if ((error = src_error (src_state)) != 0) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: src_state = src_delete (src_state) ; cannam@85: cannam@85: if (test_callback_data.end_of_data == 0) cannam@85: { printf ("\n\nLine %d : test_callback_data.end_of_data should not be 0." cannam@85: " This is a bug in the test.\n\n", __LINE__) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: puts ("ok") ; cannam@85: return ; cannam@85: } /* end_of_stream_test */