Atlas - testresample.c
Home / ext / SDL / test Lines: 1 | Size: 4881 bytes [Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)][FILE BEGIN]1/* 2 Copyright (C) 1997-2025 Sam Lantinga <[email protected]> 3 4 This software is provided 'as-is', without any express or implied 5 warranty. In no event will the authors be held liable for any damages 6 arising from the use of this software. 7 8 Permission is granted to anyone to use this software for any purpose, 9 including commercial applications, and to alter it and redistribute it 10 freely. 11*/ 12 13#include <SDL3/SDL.h> 14#include <SDL3/SDL_main.h> 15#include <SDL3/SDL_test.h> 16 17static void log_usage(char *progname, SDLTest_CommonState *state) { 18 static const char *options[] = { "in.wav", "out.wav", "newfreq", "newchan", NULL }; 19 SDLTest_CommonLogUsage(state, progname, options); 20} 21 22int main(int argc, char **argv) 23{ 24 SDL_AudioSpec spec; 25 SDL_AudioSpec cvtspec; 26 SDL_AudioStream *stream = NULL; 27 Uint8 *dst_buf = NULL; 28 Uint32 len = 0; 29 Uint8 *data = NULL; 30 int bitsize = 0; 31 int blockalign = 0; 32 int avgbytes = 0; 33 SDL_IOStream *io = NULL; 34 int dst_len; 35 int ret = 0; 36 int argpos = 0; 37 int i; 38 SDLTest_CommonState *state; 39 char *file_in = NULL; 40 char *file_out = NULL; 41 42 /* Initialize test framework */ 43 state = SDLTest_CommonCreateState(argv, 0); 44 if (!state) { 45 return 1; 46 } 47 48 SDL_zero(cvtspec); 49 50 /* Parse commandline */ 51 for (i = 1; i < argc;) { 52 int consumed; 53 54 consumed = SDLTest_CommonArg(state, i); 55 if (!consumed) { 56 if (argpos == 0) { 57 file_in = argv[i]; 58 argpos++; 59 consumed = 1; 60 } else if (argpos == 1) { 61 file_out = argv[i]; 62 argpos++; 63 consumed = 1; 64 } else if (argpos == 2) { 65 char *endp; 66 cvtspec.freq = (int)SDL_strtoul(argv[i], &endp, 0); 67 if (endp != argv[i] && *endp == '\0') { 68 argpos++; 69 consumed = 1; 70 } 71 } else if (argpos == 3) { 72 char *endp; 73 cvtspec.channels = (int)SDL_strtoul(argv[i], &endp, 0); 74 if (endp != argv[i] && *endp == '\0') { 75 argpos++; 76 consumed = 1; 77 } 78 } 79 } 80 if (consumed <= 0) { 81 log_usage(argv[0], state); 82 ret = 1; 83 goto end; 84 } 85 86 i += consumed; 87 } 88 89 if (argpos != 4) { 90 log_usage(argv[0], state); 91 ret = 1; 92 goto end; 93 } 94 95 if (!SDL_Init(SDL_INIT_AUDIO)) { 96 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s", SDL_GetError()); 97 ret = 2; 98 goto end; 99 } 100 101 if (!SDL_LoadWAV(file_in, &spec, &data, &len)) { 102 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to load %s: %s", file_in, SDL_GetError()); 103 ret = 3; 104 goto end; 105 } 106 107 cvtspec.format = spec.format; 108 if (!SDL_ConvertAudioSamples(&spec, data, len, &cvtspec, &dst_buf, &dst_len)) { 109 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to convert samples: %s", SDL_GetError()); 110 ret = 4; 111 goto end; 112 } 113 114 /* write out a WAV header... */ 115 io = SDL_IOFromFile(file_out, "wb"); 116 if (!io) { 117 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "opening '%s' failed: %s", file_out, SDL_GetError()); 118 ret = 5; 119 goto end; 120 } 121 122 bitsize = SDL_AUDIO_BITSIZE(spec.format); 123 blockalign = (bitsize / 8) * cvtspec.channels; 124 avgbytes = cvtspec.freq * blockalign; 125 126 SDL_WriteU32LE(io, 0x46464952); /* RIFF */ 127 SDL_WriteU32LE(io, dst_len + 36); 128 SDL_WriteU32LE(io, 0x45564157); /* WAVE */ 129 SDL_WriteU32LE(io, 0x20746D66); /* fmt */ 130 SDL_WriteU32LE(io, 16); /* chunk size */ 131 SDL_WriteU16LE(io, SDL_AUDIO_ISFLOAT(spec.format) ? 3 : 1); /* uncompressed */ 132 SDL_WriteU16LE(io, (Uint16)cvtspec.channels); /* channels */ 133 SDL_WriteU32LE(io, cvtspec.freq); /* sample rate */ 134 SDL_WriteU32LE(io, avgbytes); /* average bytes per second */ 135 SDL_WriteU16LE(io, (Uint16)blockalign); /* block align */ 136 SDL_WriteU16LE(io, (Uint16)bitsize); /* significant bits per sample */ 137 SDL_WriteU32LE(io, 0x61746164); /* data */ 138 SDL_WriteU32LE(io, dst_len); /* size */ 139 SDL_WriteIO(io, dst_buf, dst_len); 140 141 if (!SDL_CloseIO(io)) { 142 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "closing '%s' failed: %s", file_out, SDL_GetError()); 143 ret = 6; 144 goto end; 145 } 146 147end: 148 SDL_free(dst_buf); 149 SDL_free(data); 150 SDL_DestroyAudioStream(stream); 151 SDL_Quit(); 152 SDLTest_CommonDestroyState(state); 153 return ret; 154} 155[FILE END](C) 2025 0x4248 (C) 2025 4248 Media and 4248 Systems, All part of 0x4248 See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.