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A simple NULL check is sufficient here, max_session_id is being
properly handled by srd_init(), srd_exit(), srd_session_new().
This might also have a small performance benefit.
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Implement routines which terminate currently pending decoder operations
and reset internal state (on the C and Python sides) for instances as
well as sessions. This allows to re-use previously created stacks for
new input data.
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With these additions, frontends can now call libsigrokdecode API
functions from different threads without running into threading issues.
The backend releases the GIL when it is performing tasks that might take
a while and it doesn't need to run Python/C API calls during that time.
This allows frontends to run multiple PD stacks (in multiple frontend
threads) "at the same time" in a time-sharing, "interlocked" manner.
Whenever one of the decoders is inside e.g. self.wait() it releases the
GIL and thus allows other decoders to do some work in the mean time.
The user-visible effect is that for use-cases such as running 3 different
decoder stacks at the same time for an acquisition, the user will not
have to wait for PD 1 to finish decoding, then wait for PD 2 to finish
decoding, and only *then* being able to see annotations from PD 3.
Instead, all three PDs will decode some chunks of data from time to
time, thus the user is able to inspect annotations from all 3 PDs while
the acquisition and decoding is still going on.
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session.c:203:22: warning: format specifies type 'unsigned long long'
but the argument has type 'guint64' (aka 'unsigned long') [-Wformat]
sess->session_id, g_variant_get_uint64(data));
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
libsigrokdecode-internal.h:103:44: note: expanded from macro 'srd_dbg'
#define srd_dbg(...) srd_log(SRD_LOG_DBG, __VA_ARGS__)
^~~~~~~~~~~
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srd_inst_new() used the decoder ID as the instance ID, preventing the use
of multiple instances of the same decoder in the same session. Simply
append a numerical suffix to later instances to allow more.
Required changes to cleanup to reliably free all memory. Valgrind checked.
This fixes parts of bug #868.
Based on original work by: Soeren Apel <soeren@apelpie.net>
Signed-off-by: Karl Palsson <karlp@etactica.com>
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Currently only toplevel decoders receive the samplerate, thus stacked
decoders are not able to derive e.g. timestamps from the sample number.
This fixes bug #664.
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Since Autoconf places some important feature flags only into the
configuration header, it is necessary to include it globally to
guarantee a consistent build.
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Don't pass unitsize to srd_inst_channel_set_all(), have that only
set the channel map. Instead, srd_session_send() now has a parameter
for the unitsize which is passed with every new chunk to be decoded.
This is in preparation to fix issues with devices or files which
have a unitsize != 1 and where the "guessed" unitsize based on the
number of channels is not correct.
This also allows for (potential) future changes where every chunk can
indeed have a different unitsize.
This fixes (parts of) bug #352.
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Use g_malloc*() for small allocations and assume they always
succeed. Simplify error handling in a few places accordingly.
Document the rules in the README file.
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This prevents Python.h from being included into client code, where
it can mess things up by e.g. redefining _POSIX_C_SOURCE.
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Avoid defining any names ending in _t, those are generally reserved
for POSIX usage. For details see:
http://pubs.opengroup.org/onlinepubs/007904975/functions/xsh_chap02_02.html
http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html
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Variables of type 'struct srd_channel *' are consistently named 'pdch' to
make them easily distinguishable from libsigrok's 'struct sr_channel *'
variables that are consistently named 'ch'.
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This causes compiler errors in some setups otherwise, e.g.:
CC libsigrokdecode_la-session.lo
session.c: In function 'srd_session_metadata_set':
session.c:195:46: error: expected ')' before 'PRIu64'
srd_dbg("Setting session %d samplerate to %"PRIu64".",
^
session.c: In function 'srd_session_send':
session.c:242:15: error: expected ')' before 'PRIu64'
"number %" PRIu64 ", %" PRIu64 " bytes at 0x%p",
^
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