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Code and concepts merged in from wineoss in order to get the 

non-dsound wave output performance in winealsa to an acceptable
level. It's still possible to do better than the current code, but
this should do for now.
This commit is contained in:
Ove Kaaven 2004-04-19 19:24:25 +00:00 committed by Alexandre Julliard
parent 4365bd2122
commit 59917f4cfa
1 changed files with 85 additions and 20 deletions
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105
dlls/winmm/winealsa/audio.c
View File

@ -167,11 +167,13 @@ typedef struct {
DWORD dwBufferSize; /* size of whole ALSA buffer in bytes */
LPWAVEHDR lpQueuePtr; /* start of queued WAVEHDRs (waiting to be notified) */
LPWAVEHDR lpPlayPtr; /* start of not yet fully played buffers */
DWORD dwPartialOffset; /* Offset of not yet written bytes in lpPlayPtr */
LPWAVEHDR lpLoopPtr; /* pointer of first buffer in loop, if any */
DWORD dwLoops; /* private copy of loop counter */
DWORD dwPlayedTotal;
DWORD dwPlayedTotal; /* number of bytes actually played since opening */
DWORD dwWrittenTotal; /* number of bytes written to ALSA buffer since opening */
/* synchronization stuff */
HANDLE hStartUpEvent;
@ -937,6 +939,9 @@ static DWORD wodNotifyClient(WINE_WAVEOUT* wwo, WORD wMsg, DWORD dwParam1, DWORD
*/
static BOOL wodUpdatePlayedTotal(WINE_WAVEOUT* wwo, snd_pcm_status_t* ps)
{
snd_pcm_sframes_t delay = 0;
snd_pcm_delay(wwo->p_handle, &delay);
wwo->dwPlayedTotal = wwo->dwWrittenTotal - delay;
return TRUE;
}
@ -953,8 +958,6 @@ static void wodPlayer_BeginWaveHdr(WINE_WAVEOUT* wwo, LPWAVEHDR lpWaveHdr)
if (!lpWaveHdr) return;
wwo->lpPlayPtr->reserved = 0;
if (lpWaveHdr->dwFlags & WHDR_BEGINLOOP) {
if (wwo->lpLoopPtr) {
WARN("Already in a loop. Discarding loop on this header (%p)\n", lpWaveHdr);
@ -966,6 +969,7 @@ static void wodPlayer_BeginWaveHdr(WINE_WAVEOUT* wwo, LPWAVEHDR lpWaveHdr)
wwo->dwLoops = lpWaveHdr->dwLoops;
}
}
wwo->dwPartialOffset = 0;
}
/**************************************************************************
@ -977,11 +981,11 @@ static LPWAVEHDR wodPlayer_PlayPtrNext(WINE_WAVEOUT* wwo)
{
LPWAVEHDR lpWaveHdr = wwo->lpPlayPtr;
wwo->dwPartialOffset = 0;
if ((lpWaveHdr->dwFlags & WHDR_ENDLOOP) && wwo->lpLoopPtr) {
/* We're at the end of a loop, loop if required */
if (--wwo->dwLoops > 0) {
wwo->lpPlayPtr = wwo->lpLoopPtr;
wwo->lpPlayPtr->reserved = 0;
} else {
/* Handle overlapping loops correctly */
if (wwo->lpLoopPtr != lpWaveHdr && (lpWaveHdr->dwFlags & WHDR_BEGINLOOP)) {
@ -1016,7 +1020,7 @@ static DWORD wodPlayer_DSPWait(const WINE_WAVEOUT *wwo)
}
/**************************************************************************
* wodPllayer_NotifyWait [internal]
* wodPlayer_NotifyWait [internal]
* Returns the number of milliseconds to wait before attempting to notify
* completion of the specified wavehdr.
* This is based on the number of bytes remaining to be written in the
@ -1026,8 +1030,12 @@ static DWORD wodPlayer_NotifyWait(const WINE_WAVEOUT* wwo, LPWAVEHDR lpWaveHdr)
{
DWORD dwMillis;
dwMillis = (lpWaveHdr->dwBufferLength - lpWaveHdr->reserved) * 1000 / wwo->format.wf.nAvgBytesPerSec;
if (!dwMillis) dwMillis = 1;
if (lpWaveHdr->reserved < wwo->dwPlayedTotal) {
dwMillis = 1;
} else {
dwMillis = (lpWaveHdr->reserved - wwo->dwPlayedTotal) * 1000 / wwo->format.wf.nAvgBytesPerSec;
if (!dwMillis) dwMillis = 1;
}
return dwMillis;
}
@ -1042,18 +1050,18 @@ static int wodPlayer_WriteMaxFrags(WINE_WAVEOUT* wwo, DWORD* frames)
{
/* Only attempt to write to free frames */
LPWAVEHDR lpWaveHdr = wwo->lpPlayPtr;
DWORD dwLength = snd_pcm_bytes_to_frames(wwo->p_handle, lpWaveHdr->dwBufferLength - lpWaveHdr->reserved);
DWORD dwLength = snd_pcm_bytes_to_frames(wwo->p_handle, lpWaveHdr->dwBufferLength - wwo->dwPartialOffset);
int toWrite = min(dwLength, *frames);
int written;
TRACE("Writing wavehdr %p.%lu[%lu]\n", lpWaveHdr, lpWaveHdr->reserved, lpWaveHdr->dwBufferLength);
TRACE("Writing wavehdr %p.%lu[%lu]\n", lpWaveHdr, wwo->dwPartialOffset, lpWaveHdr->dwBufferLength);
written = (wwo->write)(wwo->p_handle, lpWaveHdr->lpData + lpWaveHdr->reserved, toWrite);
written = (wwo->write)(wwo->p_handle, lpWaveHdr->lpData + wwo->dwPartialOffset, toWrite);
if ( written < 0)
{
/* XRUN occurred. let's try to recover */
ALSA_XRUNRecovery(wwo, written);
written = (wwo->write)(wwo->p_handle, lpWaveHdr->lpData + lpWaveHdr->reserved, toWrite);
written = (wwo->write)(wwo->p_handle, lpWaveHdr->lpData + wwo->dwPartialOffset, toWrite);
}
if (written <= 0)
{
@ -1062,15 +1070,15 @@ static int wodPlayer_WriteMaxFrags(WINE_WAVEOUT* wwo, DWORD* frames)
return written;
}
lpWaveHdr->reserved += snd_pcm_frames_to_bytes(wwo->p_handle, written);
if ( lpWaveHdr->reserved >= lpWaveHdr->dwBufferLength) {
wwo->dwPartialOffset += snd_pcm_frames_to_bytes(wwo->p_handle, written);
if ( wwo->dwPartialOffset >= lpWaveHdr->dwBufferLength) {
/* this will be used to check if the given wave header has been fully played or not... */
lpWaveHdr->reserved = lpWaveHdr->dwBufferLength;
wwo->dwPartialOffset = lpWaveHdr->dwBufferLength;
/* If we wrote all current wavehdr, skip to the next one */
wodPlayer_PlayPtrNext(wwo);
}
*frames -= written;
wwo->dwPlayedTotal += snd_pcm_frames_to_bytes(wwo->p_handle, written);
wwo->dwWrittenTotal += snd_pcm_frames_to_bytes(wwo->p_handle, written);
return written;
}
@ -1093,11 +1101,12 @@ static DWORD wodPlayer_NotifyCompletions(WINE_WAVEOUT* wwo, BOOL force)
* - we hit the beginning of a running loop
* - we hit a wavehdr which hasn't finished playing
*/
#if 0
while ((lpWaveHdr = wwo->lpQueuePtr) &&
(force ||
(lpWaveHdr != wwo->lpPlayPtr &&
lpWaveHdr != wwo->lpLoopPtr &&
lpWaveHdr->reserved == lpWaveHdr->dwBufferLength))) {
lpWaveHdr->reserved <= wwo->dwPlayedTotal))) {
wwo->lpQueuePtr = lpWaveHdr->lpNext;
@ -1106,6 +1115,25 @@ static DWORD wodPlayer_NotifyCompletions(WINE_WAVEOUT* wwo, BOOL force)
wodNotifyClient(wwo, WOM_DONE, (DWORD)lpWaveHdr, 0);
}
#else
for (;;)
{
lpWaveHdr = wwo->lpQueuePtr;
if (!lpWaveHdr) {TRACE("Empty queue\n"); break;}
if (!force)
{
if (lpWaveHdr == wwo->lpPlayPtr) {TRACE("play %p\n", lpWaveHdr); break;}
if (lpWaveHdr == wwo->lpLoopPtr) {TRACE("loop %p\n", lpWaveHdr); break;}
if (lpWaveHdr->reserved > wwo->dwPlayedTotal){TRACE("still playing %p (%lu/%lu)\n", lpWaveHdr, lpWaveHdr->reserved, wwo->dwPlayedTotal);break;}
}
wwo->lpQueuePtr = lpWaveHdr->lpNext;
lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
lpWaveHdr->dwFlags |= WHDR_DONE;
wodNotifyClient(wwo, WOM_DONE, (DWORD)lpWaveHdr, 0);
}
#endif
return (lpWaveHdr && lpWaveHdr != wwo->lpPlayPtr && lpWaveHdr != wwo->lpLoopPtr) ?
wodPlayer_NotifyWait(wwo, lpWaveHdr) : INFINITE;
}
@ -1146,6 +1174,7 @@ static void wodPlayer_Reset(WINE_WAVEOUT* wwo)
/* flush all possible output */
wait_for_poll(wwo->p_handle, wwo->ufds, wwo->count);
wodUpdatePlayedTotal(wwo, NULL);
/* updates current notify list */
wodPlayer_NotifyCompletions(wwo, FALSE);
@ -1163,6 +1192,9 @@ static void wodPlayer_Reset(WINE_WAVEOUT* wwo)
wwo->lpPlayPtr = wwo->lpQueuePtr = wwo->lpLoopPtr = NULL;
wwo->state = WINE_WS_STOPPED;
wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
/* Clear partial wavehdr */
wwo->dwPartialOffset = 0;
/* remove any existing message in the ring */
EnterCriticalSection(&wwo->msgRing.msg_crst);
@ -1273,12 +1305,36 @@ static void wodPlayer_ProcessMessages(WINE_WAVEOUT* wwo)
*/
static DWORD wodPlayer_FeedDSP(WINE_WAVEOUT* wwo)
{
DWORD availInQ = snd_pcm_avail_update(wwo->p_handle);
DWORD availInQ;
wodUpdatePlayedTotal(wwo, NULL);
availInQ = snd_pcm_avail_update(wwo->p_handle);
#if 0
/* input queue empty and output buffer with less than one fragment to play */
if (!wwo->lpPlayPtr && wwo->dwBufferSize < availInQ + wwo->dwFragmentSize) {
TRACE("Run out of wavehdr:s...\n");
return INFINITE;
}
#endif
/* no more room... no need to try to feed */
while (wwo->lpPlayPtr && availInQ > 0)
if ( wodPlayer_WriteMaxFrags(wwo, &availInQ) < 0 )
break;
if (availInQ > 0) {
/* Feed from partial wavehdr */
if (wwo->lpPlayPtr && wwo->dwPartialOffset != 0) {
wodPlayer_WriteMaxFrags(wwo, &availInQ);
}
/* Feed wavehdrs until we run out of wavehdrs or DSP space */
if (wwo->dwPartialOffset == 0 && wwo->lpPlayPtr) {
do {
TRACE("Setting time to elapse for %p to %lu\n",
wwo->lpPlayPtr, wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength);
/* note the value that dwPlayedTotal will return when this wave finishes playing */
wwo->lpPlayPtr->reserved = wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength;
} while (wodPlayer_WriteMaxFrags(wwo, &availInQ) && wwo->lpPlayPtr && availInQ > 0);
}
}
return wodPlayer_DSPWait(wwo);
}
@ -1308,6 +1364,15 @@ static DWORD CALLBACK wodPlayer(LPVOID pmt)
if (wwo->state == WINE_WS_PLAYING) {
dwNextFeedTime = wodPlayer_FeedDSP(wwo);
dwNextNotifyTime = wodPlayer_NotifyCompletions(wwo, FALSE);
if (dwNextFeedTime == INFINITE) {
/* FeedDSP ran out of data, but before giving up, */
/* check that a notification didn't give us more */
wodPlayer_ProcessMessages(wwo);
if (wwo->lpPlayPtr) {
TRACE("recovering\n");
dwNextFeedTime = wodPlayer_FeedDSP(wwo);
}
}
} else {
dwNextFeedTime = dwNextNotifyTime = INFINITE;
}