| /* |
| Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely. |
| */ |
| |
| #include <SDL3/SDL.h> |
| #include <SDL3/SDL_main.h> |
| #include <SDL3/SDL_test.h> |
| |
| static void log_usage(char *progname, SDLTest_CommonState *state) { |
| static const char *options[] = { "in.wav", "out.wav", "newfreq", "newchan", NULL }; |
| SDLTest_CommonLogUsage(state, progname, options); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| SDL_AudioSpec spec; |
| SDL_AudioStream *stream = NULL; |
| Uint8 *dst_buf = NULL; |
| Uint32 len = 0; |
| Uint8 *data = NULL; |
| int cvtfreq = 0; |
| int cvtchans = 0; |
| int bitsize = 0; |
| int blockalign = 0; |
| int avgbytes = 0; |
| SDL_RWops *io = NULL; |
| int dst_len; |
| int ret = 0; |
| int argpos = 0; |
| int i; |
| SDLTest_CommonState *state; |
| char *file_in = NULL; |
| char *file_out = NULL; |
| |
| /* Initialize test framework */ |
| state = SDLTest_CommonCreateState(argv, 0); |
| if (state == NULL) { |
| return 1; |
| } |
| |
| /* Enable standard application logging */ |
| SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); |
| |
| /* Parse commandline */ |
| for (i = 1; i < argc;) { |
| int consumed; |
| |
| consumed = SDLTest_CommonArg(state, i); |
| if (!consumed) { |
| if (argpos == 0) { |
| file_in = argv[i]; |
| argpos++; |
| consumed = 1; |
| } else if (argpos == 1) { |
| file_out = argv[i]; |
| argpos++; |
| consumed = 1; |
| } else if (argpos == 2) { |
| char *endp; |
| cvtfreq = (int)SDL_strtoul(argv[i], &endp, 0); |
| if (endp != argv[i] && *endp == '\0') { |
| argpos++; |
| consumed = 1; |
| } |
| } else if (argpos == 3) { |
| char *endp; |
| cvtchans = (int)SDL_strtoul(argv[i], &endp, 0); |
| if (endp != argv[i] && *endp == '\0') { |
| argpos++; |
| consumed = 1; |
| } |
| } |
| } |
| if (consumed <= 0) { |
| log_usage(argv[0], state); |
| ret = 1; |
| goto end; |
| } |
| |
| i += consumed; |
| } |
| |
| if (argpos != 4) { |
| log_usage(argv[0], state); |
| ret = 1; |
| goto end; |
| } |
| |
| if (SDL_Init(SDL_INIT_AUDIO) == -1) { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s\n", SDL_GetError()); |
| ret = 2; |
| goto end; |
| } |
| |
| if (SDL_LoadWAV(file_in, &spec, &data, &len) == NULL) { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to load %s: %s\n", file_in, SDL_GetError()); |
| ret = 3; |
| goto end; |
| } |
| |
| if (SDL_ConvertAudioSamples(spec.format, spec.channels, spec.freq, data, len, |
| spec.format, cvtchans, cvtfreq, &dst_buf, &dst_len) < 0) { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to convert samples: %s\n", SDL_GetError()); |
| ret = 4; |
| goto end; |
| } |
| |
| /* write out a WAV header... */ |
| io = SDL_RWFromFile(file_out, "wb"); |
| if (io == NULL) { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fopen('%s') failed: %s\n", file_out, SDL_GetError()); |
| ret = 5; |
| goto end; |
| } |
| |
| bitsize = SDL_AUDIO_BITSIZE(spec.format); |
| blockalign = (bitsize / 8) * cvtchans; |
| avgbytes = cvtfreq * blockalign; |
| |
| SDL_WriteLE32(io, 0x46464952); /* RIFF */ |
| SDL_WriteLE32(io, dst_len + 36); |
| SDL_WriteLE32(io, 0x45564157); /* WAVE */ |
| SDL_WriteLE32(io, 0x20746D66); /* fmt */ |
| SDL_WriteLE32(io, 16); /* chunk size */ |
| SDL_WriteLE16(io, SDL_AUDIO_ISFLOAT(spec.format) ? 3 : 1); /* uncompressed */ |
| SDL_WriteLE16(io, cvtchans); /* channels */ |
| SDL_WriteLE32(io, cvtfreq); /* sample rate */ |
| SDL_WriteLE32(io, avgbytes); /* average bytes per second */ |
| SDL_WriteLE16(io, blockalign); /* block align */ |
| SDL_WriteLE16(io, bitsize); /* significant bits per sample */ |
| SDL_WriteLE32(io, 0x61746164); /* data */ |
| SDL_WriteLE32(io, dst_len); /* size */ |
| SDL_RWwrite(io, dst_buf, dst_len); |
| |
| if (SDL_RWclose(io) == -1) { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fclose('%s') failed: %s\n", file_out, SDL_GetError()); |
| ret = 6; |
| goto end; |
| } |
| |
| end: |
| SDL_free(dst_buf); |
| SDL_free(data); |
| SDL_DestroyAudioStream(stream); |
| SDL_Quit(); |
| SDLTest_CommonDestroyState(state); |
| return ret; |
| } |