util/spkmodem_recv: Add -u flag (no line buffer)
printf outputs to stdout, which is line buffered by default. Adding a -u option to disable buffering. Exit when a non-support flag is given, but adhere to current behaviour when no flag is given. Signed-off-by: Leah Rowe <leah@libreboot.org>fsdg20230625
parent
01fdfa3ab6
commit
25241ae222
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@ -6,6 +6,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/* Compilation: gcc -o spkmodem-recv spkmodem-recv */
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/* Usage: parec --channels=1 --rate=48000 --format=s16le | ./spkmodem-recv */
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@ -33,7 +34,17 @@ void fetch_sample(void);
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int
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main(int argc, char *argv[])
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{
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(void)argc; (void)argv;
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int c;
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while ((c = getopt(argc, argv, "u")) != -1) {
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switch (c) {
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case 'u':
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setvbuf(stdout, NULL, _IONBF, 0);
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break;
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default:
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err(errno = EINVAL, NULL);
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}
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}
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while (!feof(stdin))
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handle_audio();
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