cannam@85: /* cannam@85: ** Copyright (C) 2002-2011 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 "config.h" cannam@85: cannam@85: #include 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: #define BUFFER_LEN 50000 cannam@85: #define BLOCK_LEN (12) cannam@85: cannam@85: #define MAX_CHANNELS 10 cannam@85: cannam@85: static void simple_test (int converter, int channel_count, double target_snr) ; cannam@85: static void process_test (int converter, int channel_count, double target_snr) ; cannam@85: static void callback_test (int converter, int channel_count, double target_snr) ; cannam@85: cannam@85: int cannam@85: main (void) cannam@85: { double target ; cannam@85: int k ; cannam@85: cannam@85: puts ("\n Zero Order Hold interpolator :") ; cannam@85: target = 38.0 ; cannam@85: for (k = 1 ; k <= 3 ; k++) cannam@85: { simple_test (SRC_ZERO_ORDER_HOLD, k, target) ; cannam@85: process_test (SRC_ZERO_ORDER_HOLD, k, target) ; cannam@85: callback_test (SRC_ZERO_ORDER_HOLD, k, target) ; cannam@85: } ; cannam@85: cannam@85: puts ("\n Linear interpolator :") ; cannam@85: target = 79.0 ; cannam@85: for (k = 1 ; k <= 3 ; k++) cannam@85: { simple_test (SRC_LINEAR, k, target) ; cannam@85: process_test (SRC_LINEAR, k, target) ; cannam@85: callback_test (SRC_LINEAR, k, target) ; cannam@85: } ; cannam@85: cannam@85: puts ("\n Sinc interpolator :") ; cannam@85: target = 100.0 ; cannam@85: for (k = 1 ; k <= MAX_CHANNELS ; k++) cannam@85: { simple_test (SRC_SINC_FASTEST, k, target) ; cannam@85: process_test (SRC_SINC_FASTEST, k, target) ; cannam@85: callback_test (SRC_SINC_FASTEST, k, target) ; cannam@85: } ; cannam@85: cannam@85: puts ("") ; cannam@85: cannam@85: return 0 ; cannam@85: } /* main */ cannam@85: cannam@85: /*============================================================================== cannam@85: */ cannam@85: cannam@85: static float input_serial [BUFFER_LEN * MAX_CHANNELS] ; cannam@85: static float input_interleaved [BUFFER_LEN * MAX_CHANNELS] ; cannam@85: static float output_interleaved [BUFFER_LEN * MAX_CHANNELS] ; cannam@85: static float output_serial [BUFFER_LEN * MAX_CHANNELS] ; cannam@85: cannam@85: static void cannam@85: simple_test (int converter, int channel_count, double target_snr) cannam@85: { SRC_DATA src_data ; cannam@85: cannam@85: double freq, snr ; cannam@85: int ch, error, frames ; cannam@85: cannam@85: printf ("\t%-22s (%2d channel%c) ............ ", "simple_test", channel_count, channel_count > 1 ? 's' : ' ') ; cannam@85: fflush (stdout) ; cannam@85: cannam@85: assert (channel_count <= MAX_CHANNELS) ; cannam@85: cannam@85: memset (input_serial, 0, sizeof (input_serial)) ; cannam@85: memset (input_interleaved, 0, sizeof (input_interleaved)) ; cannam@85: memset (output_interleaved, 0, sizeof (output_interleaved)) ; cannam@85: memset (output_serial, 0, sizeof (output_serial)) ; cannam@85: cannam@85: frames = BUFFER_LEN ; cannam@85: cannam@85: /* Calculate channel_count separate windowed sine waves. */ cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { freq = (200.0 + 33.333333333 * ch) / 44100.0 ; cannam@85: gen_windowed_sines (1, &freq, 1.0, input_serial + ch * frames, frames) ; cannam@85: } ; cannam@85: cannam@85: /* Interleave the data in preparation for SRC. */ cannam@85: interleave_data (input_serial, input_interleaved, frames, channel_count) ; cannam@85: cannam@85: /* Choose a converstion ratio <= 1.0. */ cannam@85: src_data.src_ratio = 0.95 ; cannam@85: cannam@85: src_data.data_in = input_interleaved ; cannam@85: src_data.input_frames = frames ; cannam@85: cannam@85: src_data.data_out = output_interleaved ; cannam@85: src_data.output_frames = frames ; cannam@85: cannam@85: if ((error = src_simple (&src_data, converter, channel_count))) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: if (fabs (src_data.output_frames_gen - src_data.src_ratio * src_data.input_frames) > 2) cannam@85: { printf ("\n\nLine %d : bad output data length %ld should be %d.\n", __LINE__, cannam@85: src_data.output_frames_gen, (int) floor (src_data.src_ratio * src_data.input_frames)) ; cannam@85: printf ("\tsrc_ratio : %.4f\n", src_data.src_ratio) ; cannam@85: printf ("\tinput_len : %ld\n", src_data.input_frames) ; cannam@85: printf ("\toutput_len : %ld\n\n", src_data.output_frames_gen) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: /* De-interleave data so SNR can be calculated for each channel. */ cannam@85: deinterleave_data (output_interleaved, output_serial, frames, channel_count) ; cannam@85: cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { snr = calculate_snr (output_serial + ch * frames, frames, 1) ; cannam@85: if (snr < target_snr) cannam@85: { printf ("\n\nLine %d: channel %d snr %f should be %f\n", __LINE__, ch, snr, target_snr) ; cannam@85: save_oct_float ("output.dat", input_serial, channel_count * frames, output_serial, channel_count * frames) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: } ; cannam@85: cannam@85: puts ("ok") ; cannam@85: cannam@85: return ; cannam@85: } /* simple_test */ cannam@85: cannam@85: /*============================================================================== cannam@85: */ cannam@85: cannam@85: static void cannam@85: process_test (int converter, int channel_count, double target_snr) cannam@85: { SRC_STATE *src_state ; cannam@85: SRC_DATA src_data ; cannam@85: cannam@85: double freq, snr ; cannam@85: int ch, error, frames, current_in, current_out ; cannam@85: cannam@85: printf ("\t%-22s (%2d channel%c) ............ ", "process_test", channel_count, channel_count > 1 ? 's' : ' ') ; cannam@85: fflush (stdout) ; cannam@85: cannam@85: assert (channel_count <= MAX_CHANNELS) ; cannam@85: cannam@85: memset (input_serial, 0, sizeof (input_serial)) ; cannam@85: memset (input_interleaved, 0, sizeof (input_interleaved)) ; cannam@85: memset (output_interleaved, 0, sizeof (output_interleaved)) ; cannam@85: memset (output_serial, 0, sizeof (output_serial)) ; cannam@85: cannam@85: frames = BUFFER_LEN ; cannam@85: cannam@85: /* Calculate channel_count separate windowed sine waves. */ cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { freq = (400.0 + 11.333333333 * ch) / 44100.0 ; cannam@85: gen_windowed_sines (1, &freq, 1.0, input_serial + ch * frames, frames) ; cannam@85: } ; cannam@85: cannam@85: /* Interleave the data in preparation for SRC. */ cannam@85: interleave_data (input_serial, input_interleaved, frames, channel_count) ; cannam@85: cannam@85: /* Perform sample rate conversion. */ cannam@85: if ((src_state = src_new (converter, channel_count, &error)) == NULL) cannam@85: { printf ("\n\nLine %d : src_new() failed : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: src_data.end_of_input = 0 ; /* Set this later. */ cannam@85: cannam@85: /* Choose a converstion ratio < 1.0. */ cannam@85: src_data.src_ratio = 0.95 ; cannam@85: cannam@85: src_data.data_in = input_interleaved ; cannam@85: src_data.data_out = output_interleaved ; cannam@85: cannam@85: current_in = current_out = 0 ; cannam@85: cannam@85: while (1) cannam@85: { src_data.input_frames = MAX (MIN (BLOCK_LEN, frames - current_in), 0) ; cannam@85: src_data.output_frames = MAX (MIN (BLOCK_LEN, frames - current_out), 0) ; cannam@85: cannam@85: if ((error = src_process (src_state, &src_data))) cannam@85: { printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: if (src_data.end_of_input && src_data.output_frames_gen == 0) cannam@85: break ; cannam@85: cannam@85: current_in += src_data.input_frames_used ; cannam@85: current_out += src_data.output_frames_gen ; cannam@85: cannam@85: src_data.data_in += src_data.input_frames_used * channel_count ; cannam@85: src_data.data_out += src_data.output_frames_gen * channel_count ; cannam@85: cannam@85: src_data.end_of_input = (current_in >= frames) ? 1 : 0 ; cannam@85: } ; cannam@85: cannam@85: src_state = src_delete (src_state) ; cannam@85: cannam@85: if (fabs (current_out - src_data.src_ratio * current_in) > 2) cannam@85: { printf ("\n\nLine %d : bad output data length %d should be %d.\n", __LINE__, cannam@85: current_out, (int) floor (src_data.src_ratio * current_in)) ; cannam@85: printf ("\tsrc_ratio : %.4f\n", src_data.src_ratio) ; cannam@85: printf ("\tinput_len : %d\n", frames) ; cannam@85: printf ("\toutput_len : %d\n\n", current_out) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: /* De-interleave data so SNR can be calculated for each channel. */ cannam@85: deinterleave_data (output_interleaved, output_serial, frames, channel_count) ; cannam@85: cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { snr = calculate_snr (output_serial + ch * frames, frames, 1) ; cannam@85: if (snr < target_snr) cannam@85: { printf ("\n\nLine %d: channel %d snr %f should be %f\n", __LINE__, ch, snr, target_snr) ; cannam@85: save_oct_float ("output.dat", input_serial, channel_count * frames, output_serial, channel_count * frames) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: } ; cannam@85: cannam@85: puts ("ok") ; cannam@85: cannam@85: return ; cannam@85: } /* process_test */ cannam@85: cannam@85: /*============================================================================== cannam@85: */ cannam@85: cannam@85: typedef struct cannam@85: { int channels ; cannam@85: long total_frames ; cannam@85: long current_frame ; cannam@85: float *data ; 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: *data = pcb_data->data + (pcb_data->current_frame * pcb_data->channels) ; cannam@85: cannam@85: if (pcb_data->total_frames - pcb_data->current_frame < BLOCK_LEN) cannam@85: frames = pcb_data->total_frames - pcb_data->current_frame ; cannam@85: else cannam@85: frames = BLOCK_LEN ; cannam@85: cannam@85: pcb_data->current_frame += frames ; cannam@85: cannam@85: return frames ; cannam@85: } /* test_callback_func */ cannam@85: cannam@85: static void cannam@85: callback_test (int converter, int channel_count, double target_snr) cannam@85: { TEST_CB_DATA test_callback_data ; cannam@85: SRC_STATE *src_state = NULL ; cannam@85: cannam@85: double freq, snr, src_ratio ; cannam@85: int ch, error, frames, read_total, read_count ; cannam@85: cannam@85: printf ("\t%-22s (%2d channel%c) ............ ", "callback_test", channel_count, channel_count > 1 ? 's' : ' ') ; cannam@85: fflush (stdout) ; cannam@85: cannam@85: assert (channel_count <= MAX_CHANNELS) ; cannam@85: cannam@85: memset (input_serial, 0, sizeof (input_serial)) ; cannam@85: memset (input_interleaved, 0, sizeof (input_interleaved)) ; cannam@85: memset (output_interleaved, 0, sizeof (output_interleaved)) ; cannam@85: memset (output_serial, 0, sizeof (output_serial)) ; cannam@85: memset (&test_callback_data, 0, sizeof (test_callback_data)) ; cannam@85: cannam@85: frames = BUFFER_LEN ; cannam@85: cannam@85: /* Calculate channel_count separate windowed sine waves. */ cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { freq = (200.0 + 33.333333333 * ch) / 44100.0 ; cannam@85: gen_windowed_sines (1, &freq, 1.0, input_serial + ch * frames, frames) ; cannam@85: } ; cannam@85: cannam@85: /* Interleave the data in preparation for SRC. */ cannam@85: interleave_data (input_serial, input_interleaved, frames, channel_count) ; cannam@85: cannam@85: /* Perform sample rate conversion. */ cannam@85: src_ratio = 0.95 ; cannam@85: test_callback_data.channels = channel_count ; cannam@85: test_callback_data.total_frames = frames ; cannam@85: test_callback_data.current_frame = 0 ; cannam@85: test_callback_data.data = input_interleaved ; cannam@85: cannam@85: if ((src_state = src_callback_new (test_callback_func, converter, channel_count, &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: while (read_total < frames) cannam@85: { read_count = src_callback_read (src_state, src_ratio, frames - read_total, output_interleaved + read_total * channel_count) ; cannam@85: cannam@85: if (read_count <= 0) cannam@85: break ; cannam@85: cannam@85: read_total += read_count ; cannam@85: } ; 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 * frames) > 2) cannam@85: { printf ("\n\nLine %d : bad output data length %d should be %d.\n", __LINE__, cannam@85: read_total, (int) floor (src_ratio * frames)) ; cannam@85: printf ("\tsrc_ratio : %.4f\n", src_ratio) ; cannam@85: printf ("\tinput_len : %d\n", frames) ; cannam@85: printf ("\toutput_len : %d\n\n", read_total) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: cannam@85: /* De-interleave data so SNR can be calculated for each channel. */ cannam@85: deinterleave_data (output_interleaved, output_serial, frames, channel_count) ; cannam@85: cannam@85: for (ch = 0 ; ch < channel_count ; ch++) cannam@85: { snr = calculate_snr (output_serial + ch * frames, frames, 1) ; cannam@85: if (snr < target_snr) cannam@85: { printf ("\n\nLine %d: channel %d snr %f should be %f\n", __LINE__, ch, snr, target_snr) ; cannam@85: save_oct_float ("output.dat", input_serial, channel_count * frames, output_serial, channel_count * frames) ; cannam@85: exit (1) ; cannam@85: } ; cannam@85: } ; cannam@85: cannam@85: puts ("ok") ; cannam@85: cannam@85: return ; cannam@85: } /* callback_test */ cannam@85: