/* * On an alsa capable system, plays an audio file starting 10 seconds in. * Copes with sample-rate and channel change if necessary since its * common for audio drivers to support a subset of rates and channel * counts. * E.g. example3 song2.ogg * * Can easily be changed to work with other audio device drivers supported * by libSoX; e.g. "oss", "ao", "coreaudio", etc. * See the soxformat(7) manual page. */ int main(int argc, char * argv[]) { static sox_format_t * in, * out; /* input and output files */ sox_effects_chain_t * chain; sox_effect_t * e; sox_signalinfo_t interm_signal; char * args[10]; assert(argc == 2); sox_globals.output_message_handler = output_message; sox_globals.verbosity = 1; assert(sox_init() == SOX_SUCCESS); assert(in = sox_open_read(argv[1], NULL, NULL, NULL)); /* Change "alsa" in this line to use an alternative audio device driver: */ assert(out= sox_open_write("default", &in->signal, NULL, "alsa", NULL, NULL)); chain = sox_create_effects_chain(&in->encoding, &out->encoding); interm_signal = in->signal; /* NB: deep copy */ e = sox_create_effect(sox_find_effect("input")); args[0] = (char *)in, assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &interm_signal, &in->signal) == SOX_SUCCESS); free(e); e = sox_create_effect(sox_find_effect("trim")); args[0] = "10", assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &interm_signal, &in->signal) == SOX_SUCCESS); free(e); if (in->signal.rate != out->signal.rate) { e = sox_create_effect(sox_find_effect("rate")); assert(sox_effect_options(e, 0, NULL) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &interm_signal, &out->signal) == SOX_SUCCESS); free(e); } if (in->signal.channels != out->signal.channels) { e = sox_create_effect(sox_find_effect("channels")); assert(sox_effect_options(e, 0, NULL) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &interm_signal, &out->signal) == SOX_SUCCESS); free(e); } e = sox_create_effect(sox_find_effect("output")); args[0] = (char *)out, assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &interm_signal, &out->signal) == SOX_SUCCESS); free(e); sox_flow_effects(chain, NULL, NULL); sox_delete_effects_chain(chain); sox_close(out); sox_close(in); sox_quit(); return 0; }
int main(int argc, char** argv) { if (argc != 1) { fprintf(stderr, "usage: %s < input_file\n", argv[0]); exit(1); } const int in_channels = 2, in_samples = 512, sample_rate = 44100; if (sox_init() != SOX_SUCCESS) { oops("sox_init()"); } sox_signalinfo_t out_si = {}; out_si.rate = sample_rate; out_si.channels = in_channels; out_si.precision = SOX_SAMPLE_PRECISION; sox_format_t* output = sox_open_write("default", &out_si, NULL, "alsa", NULL, NULL); if (!output) { oops("sox_open_read()"); } sox_sample_t samples[in_samples * in_channels]; float input[in_samples * in_channels]; size_t clips = 0; SOX_SAMPLE_LOCALS; for (;;) { ssize_t sz = read(STDIN_FILENO, input, sizeof(input)); if (sz < 0) { oops("read(stdin)"); } if (sz == 0) { break; } const size_t n_samples = sz / sizeof(float); for (size_t n = 0; n < n_samples; n++) { samples[n] = SOX_FLOAT_32BIT_TO_SAMPLE(input[n], clips); } if (sox_write(output, samples, n_samples) != n_samples) { oops("sox_write()"); } } if (sox_close(output) != SOX_SUCCESS) { oops("sox_close()"); } if (sox_quit() != SOX_SUCCESS) { oops("sox_quit()"); } return 0; }
AUDMAudioFilterSox::AUDMAudioFilterSox(AUDMAudioFilter *instream,uint32_t tgt):AUDMAudioFilter (instream) { _resamples=NULL; targetFrequency=tgt; _previous->rewind(); // rewind printf("[Sox] Creating from %d Hz to %d Hz\n",_wavHeader.frequency,targetFrequency); if(_wavHeader.frequency==targetFrequency) { engaged=0; return; } engaged=1; _wavHeader.frequency= targetFrequency; int org=_previous->getInfo()->frequency; _resamples=new ResampleStruct[_wavHeader.channels]; for(int i=0; i<_wavHeader.channels; i++) { printf("[Sox Resample] from %d to %d for track %i\n",org,targetFrequency,i); ADM_assert( sox_init(org,targetFrequency,&(_resamples[i]))) ; } };
static av_cold int init(AVFilterContext *ctx) { SoxContext *sox = ctx->priv; char **argv = NULL; char *args1 = av_strdup(sox->filter); int argc = 0, numargs = 0, ret = 0; sox_encodinginfo_t *encoding; const sox_effect_handler_t *handler; char *saveptr; #define FAIL(err) ret = err; goto end; // initialize SoX if necessary if (soxinit != SOX_SUCCESS && (soxinit = sox_init()) != SOX_SUCCESS) { av_log(ctx, AV_LOG_ERROR, "Error when initing libsox: '%s'\n", sox_strerror(soxinit)); FAIL(AVERROR(EINVAL)); } // create arguments array if ((ret = realloc_argv(&argv, &numargs)) < 0) { FAIL(ret); } // parse arguments into a string array argv[argc++] = av_strtok(args1, " ", &saveptr); while (argv[argc++] = av_strtok(NULL, " ", &saveptr)) { if (argc == numargs) { if ((ret = realloc_argv(&argv, &numargs)) < 0) { FAIL(ret); } } } handler = sox_find_effect(argv[0]); if (!handler) { av_log(ctx, AV_LOG_ERROR, "Could not find Sox effect named '%s'\n", argv[0]); FAIL(AVERROR(EINVAL)); } sox->effect = sox_create_effect(handler); if (!sox->effect) { av_log(ctx, AV_LOG_ERROR, "Could not create Sox effect '%s'\n", argv[0]); return AVERROR(EINVAL); } if (sox->effect->handler.getopts(sox->effect, argc-1, argv) != SOX_SUCCESS) { av_log(ctx, AV_LOG_ERROR, "Invalid arguments to Sox effect\n"); if (sox->effect->handler.usage) av_log(ctx, AV_LOG_ERROR, "Usage: %s\n", sox->effect->handler.usage); return AVERROR(EINVAL); } if (!(encoding = av_mallocz(sizeof(sox_encodinginfo_t)))) return AVERROR(ENOMEM); encoding->encoding = SOX_DEFAULT_ENCODING; encoding->bits_per_sample = 32; sox->effect->out_encoding = sox->effect->in_encoding = encoding; sox->effect->clips = 0; sox->effect->imin = 0; end: av_free(args1); return ret; }
/* * Reads input file and displays a few seconds of wave-form, starting from * a given time through the audio. E.g. example2 song2.au 30.75 1 */ int main(int argc, char * argv[]) { sox_format_t * in; sox_sample_t * buf; size_t blocks, block_size; /* Period of audio over which we will measure its volume in order to * display the wave-form: */ static const double block_period = 0.025; /* seconds */ double start_secs = 0, period = 2; char dummy; uint64_t seek; /* All libSoX applications must start by initialising the SoX library */ assert(sox_init() == SOX_SUCCESS); assert(argc > 1); ++argv, --argc; /* Move to 1st parameter */ /* Open the input file (with default parameters) */ assert(in = sox_open_read(*argv, NULL, NULL, NULL)); ++argv, --argc; /* Move past this parameter */ if (argc) { /* If given, read the start time: */ assert(sscanf(*argv, "%lf%c", &start_secs, &dummy) == 1); ++argv, --argc; /* Move past this parameter */ } if (argc) { /* If given, read the period of time to display: */ assert(sscanf(*argv, "%lf%c", &period, &dummy) == 1); ++argv, --argc; /* Move past this parameter */ } /* Calculate the start position in number of samples: */ seek = start_secs * in->signal.rate * in->signal.channels + .5; /* Make sure that this is at a `wide sample' boundary: */ seek -= seek % in->signal.channels; /* Move the file pointer to the desired starting position */ assert(sox_seek(in, seek, SOX_SEEK_SET) == SOX_SUCCESS); /* Convert block size (in seconds) to a number of samples: */ block_size = block_period * in->signal.rate * in->signal.channels + .5; /* Make sure that this is at a `wide sample' boundary: */ block_size -= block_size % in->signal.channels; /* Allocate a block of memory to store the block of audio samples: */ assert(buf = malloc(sizeof(sox_sample_t) * block_size)); /* This example program requires that the audio has precisely 2 channels: */ assert(in->signal.channels == 2); /* Read and process blocks of audio for the selected period or until EOF: */ for (blocks = 0; sox_read(in, buf, block_size) == block_size && blocks * block_period < period; ++blocks) { double left = 0, right = 0; size_t i; static const char line[] = "==================================="; int l, r; for (i = 0; i < block_size; ++i) { SOX_SAMPLE_LOCALS; /* convert the sample from SoX's internal format to a `double' for * processing in this application: */ double sample = SOX_SAMPLE_TO_FLOAT_64BIT(buf[i],); /* The samples for each channel are interleaved; in this example * we allow only stereo audio, so the left channel audio can be found in * even-numbered samples, and the right channel audio in odd-numbered * samples: */ if (i & 1) right = max(right, fabs(sample)); /* Find the peak volume in the block */ else left = max(left, fabs(sample)); /* Find the peak volume in the block */ } /* Build up the wave form by displaying the left & right channel * volume as a line length: */ l = (1 - left) * 35 + .5; r = (1 - right) * 35 + .5; printf("%8.3f%36s|%s\n", start_secs + blocks * block_period, line + l, line + r); } /* All done; tidy up: */ free(buf); sox_close(in); sox_quit(); return 0; }
int main(int argc, char** argv) { if (argc != 2) { fprintf(stderr, "usage: %s input_file > output_file\n", argv[0]); exit(1); } const int out_channels = 2, sample_rate = 44100; if (sox_init() != SOX_SUCCESS) { oops("sox_init()"); } sox_format_t* input = sox_open_read(argv[1], NULL, NULL, NULL); if (!input) { oops("sox_open_read()"); } sox_signalinfo_t out_si = {}; out_si.rate = sample_rate; out_si.channels = out_channels; out_si.precision = SOX_SAMPLE_PRECISION; sox_effect_handler_t out_handler = { "stdout", NULL, SOX_EFF_MCHAN, NULL, NULL, stdout_writer, NULL, NULL, NULL, 0 }; sox_effects_chain_t* chain = sox_create_effects_chain(&input->encoding, NULL); if (!chain) { oops("sox_create_effects_chain()"); } { sox_effect_t* effect = sox_create_effect(sox_find_effect("input")); if (!effect) { oops("sox_create_effect(input)"); } char* args[1] = { (char*)input }; if (sox_effect_options(effect, 1, args) != SOX_SUCCESS) { oops("sox_effect_options(input)"); } if (sox_add_effect( chain, effect, &input->signal, &out_si) != SOX_SUCCESS) { oops("sox_add_effect(input)"); } free(effect); } if (input->signal.rate != out_si.rate) { { sox_effect_t* effect = sox_create_effect(sox_find_effect("gain")); if (!effect) { oops("sox_create_effect(gain)"); } const char* args[] = { "-h" }; if (sox_effect_options(effect, 1, (char**)args) != SOX_SUCCESS) { oops("sox_effect_options(gain)"); } if (sox_add_effect( chain, effect, &input->signal, &out_si) != SOX_SUCCESS) { oops("sox_add_effect(gain)"); } free(effect); } { sox_effect_t* effect = sox_create_effect(sox_find_effect("rate")); if (!effect) { oops("sox_create_effect(rate)"); } const char* args[] = { "-Q", "7", "-b", "99.7" }; if (sox_effect_options(effect, 4, (char**)args) != SOX_SUCCESS) { oops("sox_effect_options(rate)"); } if (sox_add_effect( chain, effect, &input->signal, &out_si) != SOX_SUCCESS) { oops("sox_add_effect(rate)"); } free(effect); } } if (input->signal.channels != out_si.channels) { sox_effect_t* effect = sox_create_effect(sox_find_effect("channels")); if (!effect) { oops("sox_create_effect(channels)"); } if (sox_effect_options(effect, 0, NULL) != SOX_SUCCESS) { oops("sox_effect_options(channels)"); } if (sox_add_effect( chain, effect, &input->signal, &out_si) != SOX_SUCCESS) { oops("sox_add_effect(channels)"); } free(effect); } { sox_effect_t* effect = sox_create_effect(&out_handler); if (!effect) { oops("sox_create_effect(output)"); } if (sox_add_effect( chain, effect, &input->signal, &out_si) != SOX_SUCCESS) { oops("sox_add_effect(output)"); } free(effect); } sox_flow_effects(chain, NULL, NULL); sox_delete_effects_chain(chain); if (sox_close(input) != SOX_SUCCESS) { oops("sox_close()"); } if (sox_quit() != SOX_SUCCESS) { oops("sox_quit()"); } return 0; }
/* * Reads input file, applies vol & flanger effects, stores in output file. * E.g. example1 monkey.au monkey.aiff */ int main(int argc, char * argv[]){ static sox_format_t * in, * out; /* input and output files */ sox_effects_chain_t * chain; sox_effect_t * e; char * args[10]; assert(argc == 3); /* All libSoX applications must start by initialising the SoX library */ assert(sox_init() == SOX_SUCCESS); /* Open the input file (with default parameters) */ assert(in = sox_open_read(argv[1], NULL, NULL, NULL)); /* Open the output file; we must specify the output signal characteristics. * Since we are using only simple effects, they are the same as the input * file characteristics */ assert(out = sox_open_write(argv[2], &in->signal, NULL, NULL, NULL, NULL)); /* Create an effects chain; some effects need to know about the input * or output file encoding so we provide that information here */ chain = sox_create_effects_chain(&in->encoding, &out->encoding); /* The first effect in the effect chain must be something that can source * samples; in this case, we use the built-in handler that inputs * data from an audio file */ e = sox_create_effect(sox_find_effect("input")); args[0] = (char *)in, assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); /* This becomes the first `effect' in the chain */ assert(sox_add_effect(chain, e, &in->signal, &in->signal) == SOX_SUCCESS); /* Create the `vol' effect, and initialise it with the desired parameters: */ e = sox_create_effect(sox_find_effect("vol")); args[0] = "3dB", assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); /* Add the effect to the end of the effects processing chain: */ assert(sox_add_effect(chain, e, &in->signal, &in->signal) == SOX_SUCCESS); /* Create the `flanger' effect, and initialise it with default parameters: */ e = sox_create_effect(sox_find_effect("flanger")); assert(sox_effect_options(e, 0, NULL) == SOX_SUCCESS); /* Add the effect to the end of the effects processing chain: */ assert(sox_add_effect(chain, e, &in->signal, &in->signal) == SOX_SUCCESS); /* The last effect in the effect chain must be something that only consumes * samples; in this case, we use the built-in handler that outputs * data to an audio file */ e = sox_create_effect(sox_find_effect("output")); args[0] = (char *)out, assert(sox_effect_options(e, 1, args) == SOX_SUCCESS); assert(sox_add_effect(chain, e, &in->signal, &in->signal) == SOX_SUCCESS); /* Flow samples through the effects processing chain until EOF is reached */ sox_flow_effects(chain, NULL, NULL); /* All done; tidy up: */ sox_delete_effects_chain(chain); sox_close(out); sox_close(in); sox_quit(); return 0; }
int main(int argc, char* argv[]) { static sox_format_t *in_file, *out_file; sox_sample_t *buffer; size_t read; size_t sample_count; unsigned int sample_order[SONG_LENGTH_S]; if(argc != 3) { usage(); exit(EXIT_FAILURE); } if (sox_init() != SOX_SUCCESS) { fprintf(stderr, "error: could not initialize Sox\n"); exit(EXIT_FAILURE); } if((in_file = sox_open_read(argv[1], NULL, NULL, NULL)) == NULL) { fprintf(stderr, "error could not read input file\n"); exit(EXIT_FAILURE); } if((out_file = sox_open_write(argv[2], &in_file->signal, NULL, "wav", NULL, NULL)) == NULL) { fprintf(stderr, "error could not open output file\n"); exit(EXIT_FAILURE); } sample_count = SONG_LENGTH_S * in_file->signal.rate * in_file->signal.channels; buffer = (sox_sample_t *) malloc(sizeof(sox_sample_t) * sample_count); randomize_byte_order(sample_order); if (sox_read(in_file, buffer, sample_count) != sample_count) { fprintf(stderr, "Incorrect number of samples read"); } unsigned int i=0; for(i=0;i<SONG_LENGTH_S;i++) { sox_write(out_file, buffer + (sample_order[i] * (((unsigned int)(in_file->signal.rate) * in_file->signal.channels))), in_file->signal.rate * in_file->signal.channels); } free(buffer); sox_close(in_file); sox_close(out_file); sox_quit(); return 0; }