| /* test_streams - Simple test pattern generator |
| * Copyright (C) 2000 Josh Coalson |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #include <math.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include "FLAC/ordinals.h" |
| |
| #ifdef _WIN32 |
| static const char *mode = "wb"; |
| #else |
| static const char *mode = "w"; |
| #endif |
| |
| static bool is_big_endian_host; |
| |
| static void swap16(int16 *i) |
| { |
| unsigned char *x = (unsigned char *)i, b; |
| if(!is_big_endian_host) { |
| b = x[0]; |
| x[0] = x[1]; |
| x[1] = b; |
| } |
| } |
| |
| /* a mono one-sample 16bps stream */ |
| static bool generate_01() |
| { |
| FILE *f; |
| int16 x = -32768; |
| |
| if(0 == (f = fopen("test01.raw", mode))) |
| return false; |
| |
| swap16(&x); |
| if(fwrite(&x, sizeof(x), 1, f) < 1) |
| goto foo; |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a stereo one-sample 16bps stream */ |
| static bool generate_02() |
| { |
| FILE *f; |
| int16 xl = -32768, xr = 32767; |
| |
| if(0 == (f = fopen("test02.raw", mode))) |
| return false; |
| |
| swap16(&xl); |
| swap16(&xr); |
| |
| if(fwrite(&xl, sizeof(xl), 1, f) < 1) |
| goto foo; |
| if(fwrite(&xr, sizeof(xr), 1, f) < 1) |
| goto foo; |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a mono five-sample 16bps stream */ |
| static bool generate_03() |
| { |
| FILE *f; |
| int16 x[] = { -25, 0, 25, 50, 100 }; |
| unsigned i; |
| |
| if(0 == (f = fopen("test03.raw", mode))) |
| return false; |
| |
| for(i = 0; i < 5; i++) |
| swap16(x+i); |
| |
| if(fwrite(&x, sizeof(int16), 5, f) < 5) |
| goto foo; |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a stereo five-sample 16bps stream */ |
| static bool generate_04() |
| { |
| FILE *f; |
| int16 x[] = { -25, 500, 0, 400, 25, 300, 50, 200, 100, 100 }; |
| unsigned i; |
| |
| if(0 == (f = fopen("test04.raw", mode))) |
| return false; |
| |
| for(i = 0; i < 10; i++) |
| swap16(x+i); |
| |
| if(fwrite(&x, sizeof(int16), 10, f) < 10) |
| goto foo; |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a mono full-scale deflection 8bps stream */ |
| static bool generate_fsd8(const char *fn, const int pattern[], unsigned reps) |
| { |
| FILE *f; |
| unsigned rep, p; |
| |
| assert(pattern != 0); |
| |
| if(0 == (f = fopen(fn, mode))) |
| return false; |
| |
| for(rep = 0; rep < reps; rep++) { |
| for(p = 0; pattern[p]; p++) { |
| signed char x = pattern[p] > 0? 127 : -128; |
| if(fwrite(&x, sizeof(x), 1, f) < 1) |
| goto foo; |
| } |
| } |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a mono full-scale deflection 16bps stream */ |
| static bool generate_fsd16(const char *fn, const int pattern[], unsigned reps) |
| { |
| FILE *f; |
| unsigned rep, p; |
| |
| assert(pattern != 0); |
| |
| if(0 == (f = fopen(fn, mode))) |
| return false; |
| |
| for(rep = 0; rep < reps; rep++) { |
| for(p = 0; pattern[p]; p++) { |
| int16 x = pattern[p] > 0? 32767 : -32768; |
| swap16(&x); |
| if(fwrite(&x, sizeof(x), 1, f) < 1) |
| goto foo; |
| } |
| } |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| /* a mono sine-wave 16bps stream */ |
| static bool generate_sine16(const char *fn, const double sample_rate, const unsigned samples, const double f1, const double a1, const double f2, const double a2) |
| { |
| const signed short full_scale = 32767; |
| const double delta1 = 2.0 * M_PI / ( sample_rate / f1); |
| const double delta2 = 2.0 * M_PI / ( sample_rate / f2); |
| FILE *f; |
| double theta1, theta2; |
| unsigned i; |
| |
| if(0 == (f = fopen(fn, mode))) |
| return false; |
| |
| for(i = 0, theta1 = theta2 = 0.0; i < samples; i++, theta1 += delta1, theta2 += delta2) { |
| double val = (a1*sin(theta1) + a2*sin(theta2))*(double)full_scale; |
| int16 v = (int16)(val + 0.5); |
| swap16(&v); |
| if(fwrite(&v, sizeof(v), 1, f) < 1) |
| goto foo; |
| } |
| |
| fclose(f); |
| return true; |
| foo: |
| fclose(f); |
| return false; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| uint32 test = 1; |
| |
| int pattern01[] = { 1, -1, 0 }; |
| int pattern02[] = { 1, 1, -1, 0 }; |
| int pattern03[] = { 1, -1, -1, 0 }; |
| int pattern04[] = { 1, -1, 1, -1, 0 }; |
| int pattern05[] = { 1, -1, -1, 1, 0 }; |
| int pattern06[] = { 1, -1, 1, 1, -1, 0 }; |
| int pattern07[] = { 1, -1, -1, 1, -1, 0 }; |
| |
| (void)argc; |
| (void)argv; |
| is_big_endian_host = (*((byte*)(&test)))? false : true; |
| |
| if(!generate_01()) return 1; |
| if(!generate_02()) return 1; |
| if(!generate_03()) return 1; |
| if(!generate_04()) return 1; |
| |
| if(!generate_fsd8("fsd8-01.raw", pattern01, 100)) return 1; |
| if(!generate_fsd8("fsd8-02.raw", pattern02, 100)) return 1; |
| if(!generate_fsd8("fsd8-03.raw", pattern03, 100)) return 1; |
| if(!generate_fsd8("fsd8-04.raw", pattern04, 100)) return 1; |
| if(!generate_fsd8("fsd8-05.raw", pattern05, 100)) return 1; |
| if(!generate_fsd8("fsd8-06.raw", pattern06, 100)) return 1; |
| if(!generate_fsd8("fsd8-07.raw", pattern07, 100)) return 1; |
| |
| if(!generate_fsd16("fsd16-01.raw", pattern01, 100)) return 1; |
| if(!generate_fsd16("fsd16-02.raw", pattern02, 100)) return 1; |
| if(!generate_fsd16("fsd16-03.raw", pattern03, 100)) return 1; |
| if(!generate_fsd16("fsd16-04.raw", pattern04, 100)) return 1; |
| if(!generate_fsd16("fsd16-05.raw", pattern05, 100)) return 1; |
| if(!generate_fsd16("fsd16-06.raw", pattern06, 100)) return 1; |
| if(!generate_fsd16("fsd16-07.raw", pattern07, 100)) return 1; |
| |
| if(!generate_sine16("sine-01.raw", 44100.0, 80000, 441.0, 0.50, 441.0, 0.49)) return 1; |
| if(!generate_sine16("sine-02.raw", 44100.0, 80000, 441.0, 0.61, 661.5, 0.37)) return 1; |
| if(!generate_sine16("sine-03.raw", 44100.0, 80000, 441.0, 0.50, 882.0, 0.49)) return 1; |
| if(!generate_sine16("sine-04.raw", 44100.0, 80000, 441.0, 0.50, 4410.0, 0.49)) return 1; |
| if(!generate_sine16("sine-05.raw", 44100.0, 50000, 8820.0, 0.70, 4410.0, 0.29)) return 1; |
| |
| return 0; |
| } |