| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2009 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | #include "test.h" |
| 19 | #include "resample.h" |
| 20 | #include "vector.h" |
| 21 | |
| 22 | /* Accumulate converted bytes in a dynamic string */ |
| 23 | static void converted(uint8_t *bytes, |
| 24 | size_t nbytes, |
| 25 | void *cd) { |
| 26 | struct dynstr *d = cd; |
| 27 | dynstr_append_bytes(d, (void *)bytes, nbytes); |
| 28 | } |
| 29 | |
| 30 | /* Converter wrapper */ |
| 31 | static uint8_t *convert(const struct resampler *rs, |
| 32 | const uint8_t *input, size_t input_bytes, |
| 33 | size_t *output_bytes) { |
| 34 | struct dynstr d[1]; |
| 35 | |
| 36 | dynstr_init(d); |
| 37 | while(input_bytes > 0) { |
| 38 | size_t chunk = input_bytes > 1024 ? 1024 : input_bytes; |
| 39 | size_t consumed = resample_convert(rs, |
| 40 | input, input_bytes, |
| 41 | input_bytes == chunk, |
| 42 | converted, |
| 43 | d); |
| 44 | input += consumed; |
| 45 | input_bytes -= consumed; |
| 46 | } |
| 47 | *output_bytes = d->nvec; |
| 48 | return (uint8_t *)d->vec; |
| 49 | } |
| 50 | |
| 51 | static const struct { |
| 52 | const char *description; |
| 53 | int input_bits; |
| 54 | int input_channels; |
| 55 | int input_rate; |
| 56 | int input_signed; |
| 57 | int input_endian; |
| 58 | const char *input; |
| 59 | size_t input_bytes; |
| 60 | int output_bits; |
| 61 | int output_channels; |
| 62 | int output_rate; |
| 63 | int output_signed; |
| 64 | int output_endian; |
| 65 | const char *output; |
| 66 | size_t output_bytes; |
| 67 | } conversions[] = { |
| 68 | /* Conversions that don't change the sample rate */ |
| 69 | { |
| 70 | "empty input", |
| 71 | 8, 1, 8000, 0, ENDIAN_LITTLE, "", 0, |
| 72 | 8, 1, 8000, 0, ENDIAN_LITTLE, "", 0 |
| 73 | }, |
| 74 | { |
| 75 | "sign flip 8-bit unsigned->signed", |
| 76 | 8, 1, 8000, 0, ENDIAN_LITTLE, "\x00\x7F\x80\xFF", 4, |
| 77 | 8, 1, 8000, 1, ENDIAN_LITTLE, "\x80\xFF\x00\x7F", 4 |
| 78 | }, |
| 79 | { |
| 80 | "sign flip 8-bit signed->unsigned", |
| 81 | 8, 1, 8000, 1, ENDIAN_BIG, "\x80\xFF\x00\x7F", 4, |
| 82 | 8, 1, 8000, 0, ENDIAN_BIG, "\x00\x7F\x80\xFF", 4 |
| 83 | }, |
| 84 | { |
| 85 | "mono to stereo", |
| 86 | 8, 1, 8000, 0, ENDIAN_LITTLE, "\x00\x7F\x80\xFF", 4, |
| 87 | 8, 2, 8000, 0, ENDIAN_LITTLE, "\x00\x00\x7F\x7F\x80\x80\xFF\xFF", 8 |
| 88 | }, |
| 89 | { |
| 90 | "stereo to mono", |
| 91 | 8, 2, 8000, 0, ENDIAN_LITTLE, "\x00\x01\x7F\x02\x80\x03\xFF\x04", 8, |
| 92 | 8, 1, 8000, 0, ENDIAN_LITTLE, "\x00\x7F\x80\xFF", 4 |
| 93 | }, |
| 94 | { |
| 95 | "endian flip little->big", |
| 96 | 16, 1, 8000, 0, ENDIAN_LITTLE, "\x00\x01\x00\xFF\x01\x00\x01\xFF", 8, |
| 97 | 16, 1, 8000, 0, ENDIAN_BIG, "\x01\x00\xFF\x00\x00\x01\xFF\x01", 8, |
| 98 | }, |
| 99 | { |
| 100 | "endian flip big->little", |
| 101 | 16, 1, 8000, 0, ENDIAN_BIG, "\x01\x00\xFF\x00\x00\x01\xFF\x01", 8, |
| 102 | 16, 1, 8000, 0, ENDIAN_LITTLE, "\x00\x01\x00\xFF\x01\x00\x01\xFF", 8, |
| 103 | }, |
| 104 | { |
| 105 | "8-bit to 16-bit", |
| 106 | 8, 1, 8000, 0, ENDIAN_BIG, "\x00\x7F\x80\xFF", 4, |
| 107 | 16, 1, 8000, 0, ENDIAN_BIG, "\x00\x00\x7F\x00\x80\x00\xFF\x00", 8 |
| 108 | }, |
| 109 | { |
| 110 | "16-bit to 8-bit", |
| 111 | 16, 1, 8000, 0, ENDIAN_BIG, "\x00\x00\x7F\xFF\x80\x00\xFF\xFF", 8, |
| 112 | 8, 1, 8000, 0, ENDIAN_BIG, "\x00\x7F\x80\xFF", 4 |
| 113 | }, |
| 114 | #if HAVE_SAMPLERATE_H |
| 115 | /* Conversions that do change the sample rate */ |
| 116 | |
| 117 | #endif |
| 118 | }; |
| 119 | #define NCONVERSIONS (sizeof conversions / sizeof *conversions) |
| 120 | |
| 121 | static void test_resample(void) { |
| 122 | for(size_t n = 0; n < NCONVERSIONS; ++n) { |
| 123 | struct resampler rs[1]; |
| 124 | |
| 125 | resample_init(rs, |
| 126 | conversions[n].input_bits, |
| 127 | conversions[n].input_channels, |
| 128 | conversions[n].input_rate, |
| 129 | conversions[n].input_signed, |
| 130 | conversions[n].input_endian, |
| 131 | conversions[n].output_bits, |
| 132 | conversions[n].output_channels, |
| 133 | conversions[n].output_rate, |
| 134 | conversions[n].output_signed, |
| 135 | conversions[n].output_endian); |
| 136 | size_t output_bytes; |
| 137 | const uint8_t *output = convert(rs, |
| 138 | (const uint8_t *)conversions[n].input, |
| 139 | conversions[n].input_bytes, |
| 140 | &output_bytes); |
| 141 | if(output_bytes != conversions[n].output_bytes |
| 142 | || memcmp(output, conversions[n].output, output_bytes)) { |
| 143 | fprintf(stderr, "index %zu description %s mismatch\n", |
| 144 | n, conversions[n].description); |
| 145 | size_t k = 0; |
| 146 | while(k < conversions[n].output_bytes || k < output_bytes) { |
| 147 | size_t j = 0; |
| 148 | fprintf(stderr, "%8zu E:", k); |
| 149 | for(j = 0; j < 16; ++j) { |
| 150 | if(j + k < conversions[n].output_bytes) |
| 151 | fprintf(stderr, " %02x", conversions[n].output[j + k]); |
| 152 | } |
| 153 | fprintf(stderr, "\n G:"); |
| 154 | for(j = 0; j < 16; ++j) { |
| 155 | if(j + k < output_bytes) |
| 156 | fprintf(stderr, " %02x", output[j + k]); |
| 157 | } |
| 158 | fprintf(stderr, "\n"); |
| 159 | k += 16; |
| 160 | } |
| 161 | ++errors; |
| 162 | } |
| 163 | ++tests; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | TEST(resample); |
| 168 | |
| 169 | /* |
| 170 | Local Variables: |
| 171 | c-basic-offset:2 |
| 172 | comment-column:40 |
| 173 | fill-column:79 |
| 174 | indent-tabs-mode:nil |
| 175 | End: |
| 176 | */ |