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protocol-native: Allow clients to know at what index underrun occurred

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This patch introduces some extra protocol information, so protocol
version is bumped. This functionality is primarily needed to solve
a long standing issue in alsa-plugins, which should ignore underruns
if and only if it is obsolete, i e, if more data has been written to
the pipe in the meantime (which will automatically end the underrun).

BugLink: http://bugs.launchpad.net/bugs/805940
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
This commit is contained in:
David Henningsson 2011-08-02 14:34:20 +02:00 • committed by Colin Guthrie
parent 00493a4ef0
commit 1893234063
6 changed files with 36 additions and 4 deletions
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6
src/pulse/stream.h
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@ -570,6 +570,12 @@ void pa_stream_set_read_callback(pa_stream *p, pa_stream_request_cb_t cb, void *
/** Set the callback function that is called when a buffer overflow happens. (Only for playback streams) */
void pa_stream_set_overflow_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata);
/** Return at what position the latest underflow occurred, or -1 if this information is not
* known (e g if no underflow has occurred, or server is older than 1.0).
* Can be used inside the underflow callback to get information about the current underflow.
* (Only for playback streams) \since 1.0 */
int64_t pa_stream_get_underflow_index(pa_stream *p);
/** Set the callback function that is called when a buffer underflow happens. (Only for playback streams) */
void pa_stream_set_underflow_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata);