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Viewing changes to portmidi/porttime/ptwinmm.c

  • Committer: Bazaar Package Importer
  • Author(s): Paul Brossier
  • Date: 2009-12-22 21:29:31 UTC
  • mfrom: (1.2.6 upstream) (4.1.2 squeeze)
  • Revision ID: james.westby@ubuntu.com-20091222212931-nhwkzapjwsmjao1l
Tags: 0.42.5-3
* debian/control:
  - add community site to homepage field
  - improve long description
  - remove Replaces and Conflicts fields
  - add Suggests on pd-csound, pd-pdp, pd-zexy, pd-aubio
* debian/rules: add per-arch configuration flags
* debian/patches/02_kfreebsd.diff:
  - also define pd_tilde_dllextent on FreeBSD
  - fix typo (really closing #414414 this time)
  - also add hurd glue
* debian/patches/04_hurd.diff:
  - add hurd glue and s_midi_dummy.c

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Lines of Context:
portmidi/porttime/ptwinmm.c
 
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/* ptwinmm.c -- portable timer implementation for win32 */
 
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#include "porttime.h"
 
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#include "windows.h"
 
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#include "time.h"
 
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TIMECAPS caps;
 
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static long time_offset = 0;
 
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static int time_started_flag = FALSE;
 
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static long time_resolution;
 
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static MMRESULT timer_id;
 
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static PtCallback *time_callback;
 
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void CALLBACK winmm_time_callback(UINT uID, UINT uMsg, DWORD dwUser, 
 
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                                  DWORD dw1, DWORD dw2)
 
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{
 
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    (*time_callback)(Pt_Time(), (void *) dwUser);
 
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}
 
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PtError Pt_Start(int resolution, PtCallback *callback, void *userData)
 
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{
 
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    if (time_started_flag) return ptAlreadyStarted;
 
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    timeBeginPeriod(resolution);
 
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    time_resolution = resolution;
 
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    time_offset = timeGetTime();
 
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    time_started_flag = TRUE;
 
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    time_callback = callback;
 
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    if (callback) {
 
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        timer_id = timeSetEvent(resolution, 1, winmm_time_callback, 
 
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            (DWORD) userData, TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
 
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        if (!timer_id) return ptHostError;
 
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    }
 
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    return ptNoError;
 
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}
 
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PtError Pt_Stop()
 
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{
 
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    if (!time_started_flag) return ptAlreadyStopped;
 
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    if (time_callback && timer_id) {
 
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        timeKillEvent(timer_id);
 
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        time_callback = NULL;
 
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        timer_id = 0;
 
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    }
 
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    time_started_flag = FALSE;
 
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    timeEndPeriod(time_resolution);
 
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    return ptNoError;
 
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}
 
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int Pt_Started()
 
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{
 
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    return time_started_flag;
 
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}
 
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PtTimestamp Pt_Time()
 
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{
 
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    return timeGetTime() - time_offset;
 
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}
 
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