forked from pool/alsa-utils
53 lines
1.4 KiB
Diff
53 lines
1.4 KiB
Diff
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From c6614dbdab1cbe541e7d6cd29f3922510e0b6981 Mon Sep 17 00:00:00 2001
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From: Fabio Estevam <fabio.estevam@freescale.com>
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Date: Tue, 13 Nov 2012 10:05:39 -0200
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Subject: [PATCH 7/9] aplay: Show usage if no parameter is passed
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When aplay/arecord are called without any argument the application hangs forever.
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Instead of hanging, print the usage and exit.
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Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
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---
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aplay/aplay.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/aplay/aplay.c b/aplay/aplay.c
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index 741979a..f35f603 100644
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--- a/aplay/aplay.c
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+++ b/aplay/aplay.c
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@@ -493,6 +493,7 @@ int main(int argc, char *argv[])
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int tmp, err, c;
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int do_device_list = 0, do_pcm_list = 0;
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snd_pcm_info_t *info;
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+ FILE *direction;
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#ifdef ENABLE_NLS
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setlocale(LC_ALL, "");
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@@ -511,14 +512,21 @@ int main(int argc, char *argv[])
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file_type = FORMAT_WAVE;
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command = "arecord";
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start_delay = 1;
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+ direction = stdout;
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} else if (strstr(argv[0], "aplay")) {
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stream = SND_PCM_STREAM_PLAYBACK;
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command = "aplay";
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+ direction = stdin;
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} else {
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error(_("command should be named either arecord or aplay"));
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return 1;
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}
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+ if (isatty(fileno(direction)) && (argc == 1)) {
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+ usage(command);
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+ return 1;
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+ }
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+
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chunk_size = -1;
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rhwparams.format = DEFAULT_FORMAT;
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rhwparams.rate = DEFAULT_SPEED;
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--
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1.8.0.1
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