diff options
Diffstat (limited to 'tinycap.c')
| -rw-r--r-- | tinycap.c | 53 |
1 files changed, 38 insertions, 15 deletions
@@ -57,9 +57,10 @@ struct wav_header { int capturing = 1; -unsigned int capture_sample(FILE *file, unsigned int device, +unsigned int capture_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels, unsigned int rate, - unsigned int bits); + unsigned int bits, unsigned int period_size, + unsigned int period_count); void sigint_handler(int sig) { @@ -70,14 +71,17 @@ int main(int argc, char **argv) { FILE *file; struct wav_header header; + unsigned int card = 0; unsigned int device = 0; unsigned int channels = 2; unsigned int rate = 44100; unsigned int bits = 16; unsigned int frames; + unsigned int period_size = 1024; + unsigned int period_count = 4; if (argc < 2) { - fprintf(stderr, "Usage: %s file.wav [-d device] [-c channels] " + fprintf(stderr, "Usage: %s file.wav [-D card] [-d device] [-c channels] " "[-r rate] [-b bits]\n", argv[0]); return 1; } @@ -93,18 +97,35 @@ int main(int argc, char **argv) while (*argv) { if (strcmp(*argv, "-d") == 0) { argv++; - device = atoi(*argv); + if (*argv) + device = atoi(*argv); } else if (strcmp(*argv, "-c") == 0) { argv++; - channels = atoi(*argv); + if (*argv) + channels = atoi(*argv); } else if (strcmp(*argv, "-r") == 0) { argv++; - rate = atoi(*argv); + if (*argv) + rate = atoi(*argv); } else if (strcmp(*argv, "-b") == 0) { argv++; - bits = atoi(*argv); + if (*argv) + bits = atoi(*argv); + } else if (strcmp(*argv, "-D") == 0) { + argv++; + if (*argv) + card = atoi(*argv); + } else if (strcmp(*argv, "-p") == 0) { + argv++; + if (*argv) + period_size = atoi(*argv); + } else if (strcmp(*argv, "-n") == 0) { + argv++; + if (*argv) + period_count = atoi(*argv); } - argv++; + if (*argv) + argv++; } header.riff_id = ID_RIFF; @@ -125,8 +146,9 @@ int main(int argc, char **argv) /* install signal handler and begin capturing */ signal(SIGINT, sigint_handler); - frames = capture_sample(file, device, header.num_channels, - header.sample_rate, header.bits_per_sample); + frames = capture_sample(file, card, device, header.num_channels, + header.sample_rate, header.bits_per_sample, + period_size, period_count); printf("Captured %d frames\n", frames); /* write header now all information is known */ @@ -139,9 +161,10 @@ int main(int argc, char **argv) return 0; } -unsigned int capture_sample(FILE *file, unsigned int device, +unsigned int capture_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels, unsigned int rate, - unsigned int bits) + unsigned int bits, unsigned int period_size, + unsigned int period_count) { struct pcm_config config; struct pcm *pcm; @@ -151,8 +174,8 @@ unsigned int capture_sample(FILE *file, unsigned int device, config.channels = channels; config.rate = rate; - config.period_size = 1024; - config.period_count = 4; + config.period_size = period_size; + config.period_count = period_count; if (bits == 32) config.format = PCM_FORMAT_S32_LE; else if (bits == 16) @@ -161,7 +184,7 @@ unsigned int capture_sample(FILE *file, unsigned int device, config.stop_threshold = 0; config.silence_threshold = 0; - pcm = pcm_open(0, device, PCM_IN, &config); + pcm = pcm_open(card, device, PCM_IN, &config); if (!pcm || !pcm_is_ready(pcm)) { fprintf(stderr, "Unable to open PCM device (%s)\n", pcm_get_error(pcm)); |