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Shutdown gracefully on ctrl-c signals
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Improve the reading of the RIFF WAVE header so that unrecognised
chunks are skipped, which means that extra chunks are not played
as if they were audio data. This ensures that all channels for
multichannel playback line up correctly.
Change-Id: Ifdb3cb73b3c0bf41a1e271068d263cd01116616c
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pcm_write expects to receive buffer size given in bytes,
but tinyplay sends as a parameter the size in frames, which
causes audio sample data loss for some scenarios where more
than 2 channels are used.
For example:
When using 6 channels and 1024 as period size:
-On tinyplay side
size=4096 (buffer_size)
-On pcm_write (pcm.c)
x.frames = count / (pcm->config.channels *
pcm_format_to_bits(pcm->config.format) / 8);
x.frames = 4096 / (6 * 16/8)
x.frames = 341.33 (decimal part is discarded, 4 bytes are lost every
pcm_write)
--
In this case, 4 bytes are lost, which causes a shift
of the channels.
Use buffer size in bytes in order to avoid this problem.
Signed-off-by: Axel Castaneda Gonzalez <x0055901@ti.com>
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Command-line arguments are added for:
tinyplay and tinycap:
-D n -- card number
-p n -- period size
-n n -- number of periods per buffer
tinymix:
-D n -- card number
Signed-off-by: Gabriel M. Beddingfield <gabrbedd@ti.com>
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In several places, argv is incremented and *argv is dereferenced
without checking to see if it is valid to do so. This could lead to a
buffer overrun if the user provides invalid parameters.
This patch generally changes this:
if (strcmp(*argv, "-r") == 0) {
argv++;
rate = atoi(*argv);
}
argv++;
To this:
if (strcmp(*argv, "-r") == 0) {
argv++;
if (*argv)
rate = atoi(*argv);
}
if (*argv)
argv++;
Signed-off-by: Gabriel M. Beddingfield <gabrbedd@ti.com>
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Change-Id: I8f04a5dec575bf20459968fb1f181071ae856ed0
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Fixes tinyplay and tinycap after a recent change to allow
threasholds to be set in the pcm module.
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- Add to Android.mk
- Add "all" rule to Makefile
- Remove redundant old play code from tinyplay.c
- Add error checking to tinyplay
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