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Improve Windows XP voice quality

This commit is contained in:
bossiel 2012-02-27 15:41:19 +00:00
parent 8b5152a994
commit dc3bcfc58d
3 changed files with 15 additions and 3 deletions
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2
branches/2.0/doubango/tinyDAV/include/tinydav/audio/directsound/tdav_consumer_dsound.h
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@ -40,7 +40,7 @@
TDAV_BEGIN_DECLS
#define TDAV_DSOUND_CONSUMER_NOTIF_POS_COUNT 10
#define TDAV_DSOUND_CONSUMER_NOTIF_POS_COUNT 20
typedef struct tdav_consumer_dsound_s
{

2
branches/2.0/doubango/tinyDAV/include/tinydav/audio/directsound/tdav_producer_dsound.h
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@ -40,7 +40,7 @@
TDAV_BEGIN_DECLS
#define TDAV_DSOUND_PRODUCER_NOTIF_POS_COUNT 10
#define TDAV_DSOUND_PRODUCER_NOTIF_POS_COUNT 20
typedef struct tdav_producer_dsound_s
{

14
branches/2.0/doubango/tinyDAV/src/audio/directsound/tdav_consumer_dsound.c
View File

@ -217,6 +217,17 @@ static int tdav_consumer_dsound_start(tmedia_consumer_t* self)
HRESULT hr;
LPDIRECTSOUNDNOTIFY lpDSBNotify;
DSBPOSITIONNOTIFY pPosNotify[TDAV_DSOUND_CONSUMER_NOTIF_POS_COUNT] = {0};
static DWORD dwMajorVersion = -1;
// Get OS version
if(dwMajorVersion == -1){
OSVERSIONINFO osvi;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
dwMajorVersion = osvi.dwMajorVersion;
}
if(!dsound){
TSK_DEBUG_ERROR("Invalid parameter");
@ -241,7 +252,8 @@ static int tdav_consumer_dsound_start(tmedia_consumer_t* self)
/* Events associated to notification points */
for(i = 0; i<TDAV_DSOUND_CONSUMER_NOTIF_POS_COUNT; i++){
dsound->notifEvents[i] = CreateEvent(NULL, FALSE, FALSE, NULL);
pPosNotify[i].dwOffset = (dsound->bytes_per_notif * i) + (dsound->bytes_per_notif >> 1);
// set notification point offset at the start of the buffer for Windows Vista and later and at the half of the buffer of XP and before
pPosNotify[i].dwOffset = (dsound->bytes_per_notif * i) + (dwMajorVersion > 5 ? (dsound->bytes_per_notif >> 1) : 1);
pPosNotify[i].hEventNotify = dsound->notifEvents[i];
}
if((hr = IDirectSoundNotify_SetNotificationPositions(lpDSBNotify, TDAV_DSOUND_CONSUMER_NOTIF_POS_COUNT, pPosNotify)) != DS_OK){