diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2012-11-13 10:05:39 -0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-11-13 14:33:40 +0100 |
| commit | c6614dbdab1cbe541e7d6cd29f3922510e0b6981 (patch) | |
| tree | bba6aebd89a997f5b5760c62f093e09ccb6f5b3e /aplay | |
| parent | f2826072732951b1d4e1bacd8115f9e6a98932d5 (diff) | |
aplay: Show usage if no parameter is passed
When aplay/arecord are called without any argument the application hangs forever.
Instead of hanging, print the usage and exit.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'aplay')
| -rw-r--r-- | aplay/aplay.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/aplay/aplay.c b/aplay/aplay.c index 741979a..f35f603 100644 --- a/aplay/aplay.c +++ b/aplay/aplay.c @@ -493,6 +493,7 @@ int main(int argc, char *argv[]) int tmp, err, c; int do_device_list = 0, do_pcm_list = 0; snd_pcm_info_t *info; + FILE *direction; #ifdef ENABLE_NLS setlocale(LC_ALL, ""); @@ -511,14 +512,21 @@ int main(int argc, char *argv[]) file_type = FORMAT_WAVE; command = "arecord"; start_delay = 1; + direction = stdout; } else if (strstr(argv[0], "aplay")) { stream = SND_PCM_STREAM_PLAYBACK; command = "aplay"; + direction = stdin; } else { error(_("command should be named either arecord or aplay")); return 1; } + if (isatty(fileno(direction)) && (argc == 1)) { + usage(command); + return 1; + } + chunk_size = -1; rhwparams.format = DEFAULT_FORMAT; rhwparams.rate = DEFAULT_SPEED; |