mirror of
git://source.winehq.org/git/wine.git
synced 2024-09-15 07:40:21 +00:00
winealsa: Use a helper thread instead of asynchronous callbacks.
This commit is contained in:
Maarten Lankhorst
Alexandre Julliard
parent
2db89f8fa5
commit
d2f29311ca
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@ -61,10 +61,7 @@
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#ifdef HAVE_ALSA
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WINE_DEFAULT_DEBUG_CHANNEL(wave);
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/*======================================================================*
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* Low level DSOUND implementation *
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*======================================================================*/
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WINE_DECLARE_DEBUG_CHANNEL(waveloop);
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typedef struct IDsDriverImpl IDsDriverImpl;
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typedef struct IDsDriverBufferImpl IDsDriverBufferImpl;
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@ -87,107 +84,163 @@ struct IDsDriverBufferImpl
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/* IDsDriverBufferImpl fields */
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IDsDriverImpl* drv;
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CRITICAL_SECTION mmap_crst;
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LPVOID mmap_buffer;
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DWORD mmap_buflen_bytes;
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snd_pcm_uframes_t mmap_buflen_frames;
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snd_pcm_channel_area_t * mmap_areas;
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snd_async_handler_t * mmap_async_handler;
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snd_pcm_uframes_t mmap_ppos; /* play position */
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/* Do we have a direct hardware buffer - SND_PCM_TYPE_HW? */
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int mmap_mode;
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snd_pcm_uframes_t mmap_wpos; /* write position */
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HANDLE mmap_thread;
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ALSA_MSG_RING mmap_ring; /* sync object */
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};
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static void DSDB_CheckXRUN(IDsDriverBufferImpl* pdbi)
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{
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WINE_WAVEDEV * wwo = &(WOutDev[pdbi->drv->wDevID]);
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snd_pcm_state_t state = snd_pcm_state(wwo->pcm);
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snd_pcm_avail_update(wwo->pcm);
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if ( state == SND_PCM_STATE_XRUN )
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{
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int err = snd_pcm_prepare(wwo->pcm);
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TRACE("xrun occurred\n");
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int err = snd_pcm_prepare(wwo->pcm);
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WARN_(waveloop)("xrun occurred\n");
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if ( err < 0 )
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ERR("recovery from xrun failed, prepare failed: %s\n", snd_strerror(err));
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}
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else if ( state == SND_PCM_STATE_SUSPENDED )
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{
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int err = snd_pcm_resume(wwo->pcm);
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TRACE("recovery from suspension occurred\n");
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int err = snd_pcm_resume(wwo->pcm);
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TRACE_(waveloop)("recovery from suspension occurred\n");
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if (err < 0 && err != -EAGAIN){
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err = snd_pcm_prepare(wwo->pcm);
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if (err < 0)
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ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
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}
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} else if ( state != SND_PCM_STATE_RUNNING ) {
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WARN_(waveloop)("Unhandled state: %d\n", state);
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}
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}
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static void DSDB_MMAPCopy(IDsDriverBufferImpl* pdbi, int mul)
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/**
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* The helper thread for DirectSound
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*
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* Basically it does an infinite loop until it is told to die
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*
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* snd_pcm_wait() is a call that polls the sound buffer and waits
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* until there is at least 1 period free before it returns.
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*
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* We then commit the buffer filled by the owner of this
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* IDSDriverBuffer */
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static DWORD CALLBACK DBSB_MMAPLoop(LPVOID data)
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{
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WINE_WAVEDEV * wwo = &(WOutDev[pdbi->drv->wDevID]);
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snd_pcm_uframes_t period_size;
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snd_pcm_sframes_t avail;
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int err;
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int dir=0;
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IDsDriverBufferImpl* pdbi = (IDsDriverBufferImpl*)data;
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WINE_WAVEDEV *wwo = &(WOutDev[pdbi->drv->wDevID]);
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snd_pcm_uframes_t frames, wanted, ofs;
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const snd_pcm_channel_area_t *areas;
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snd_pcm_uframes_t ofs;
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snd_pcm_uframes_t frames;
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snd_pcm_uframes_t wanted;
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int state = WINE_WS_STOPPED;
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snd_pcm_state_t alsastate;
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if ( !pdbi->mmap_buffer || !wwo->hw_params || !wwo->pcm)
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return;
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TRACE_(waveloop)("0x%8p\n", data);
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TRACE("0x%8p, framelength: %lu, area: %8p\n", data, pdbi->mmap_buflen_frames, pdbi->mmap_areas);
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err = snd_pcm_hw_params_get_period_size(wwo->hw_params, &period_size, &dir);
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avail = snd_pcm_avail_update(wwo->pcm);
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DSDB_CheckXRUN(pdbi);
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TRACE("avail=%d, mul=%d\n", (int)avail, mul);
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frames = pdbi->mmap_buflen_frames;
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EnterCriticalSection(&pdbi->mmap_crst);
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/* we want to commit the given number of periods, or the whole lot */
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wanted = mul == 0 ? frames : period_size * 2;
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snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &frames);
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if (areas != pdbi->mmap_areas || areas->addr != pdbi->mmap_areas->addr)
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FIXME("Can't access sound driver's buffer directly.\n");
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/* mark our current play position */
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pdbi->mmap_ppos = ofs;
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do {
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enum win_wm_message msg;
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DWORD param;
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HANDLE hEvent;
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int err;
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snd_pcm_format_t format;
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if (frames > wanted)
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frames = wanted;
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if (state != WINE_WS_PLAYING)
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{
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ALSA_WaitRingMessage(&pdbi->mmap_ring, 1000000);
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ALSA_RetrieveRingMessage(&pdbi->mmap_ring, &msg, ¶m, &hEvent);
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}
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else
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while (!ALSA_RetrieveRingMessage(&pdbi->mmap_ring, &msg, ¶m, &hEvent))
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{
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snd_pcm_wait(wwo->pcm, -1);
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DSDB_CheckXRUN(pdbi);
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err = snd_pcm_mmap_commit(wwo->pcm, ofs, frames);
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wanted = frames = pdbi->mmap_buflen_frames;
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/* Check to make sure we committed all we want to commit. ALSA
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* only gives a contiguous linear region, so we need to check this
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* in case we've reached the end of the buffer, in which case we
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* can wrap around back to the beginning. */
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if (frames < wanted) {
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frames = wanted -= frames;
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snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &frames);
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snd_pcm_mmap_commit(wwo->pcm, ofs, frames);
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}
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err = snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &frames);
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snd_pcm_mmap_commit(wwo->pcm, ofs, frames);
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LeaveCriticalSection(&pdbi->mmap_crst);
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}
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/* mark our current play position */
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pdbi->mmap_ppos = ofs;
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TRACE_(waveloop)("Updated position to %lx [%d, 0x%8p, %lu]\n", ofs, err, areas, frames);
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/* Check to make sure we committed all we want to commit. ALSA
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* only gives a contiguous linear region, so we need to check this
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* in case we've reached the end of the buffer, in which case we
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* can wrap around back to the beginning. */
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if (frames < wanted) {
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frames = wanted - frames;
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snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &frames);
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snd_pcm_mmap_commit(wwo->pcm, ofs, frames);
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}
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wanted = 0;
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snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &wanted);
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snd_pcm_mmap_commit(wwo->pcm, ofs, wanted);
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pdbi->mmap_wpos = ofs;
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}
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static void DSDB_PCMCallback(snd_async_handler_t *ahandler)
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{
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int periods;
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/* snd_pcm_t * handle = snd_async_handler_get_pcm(ahandler); */
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IDsDriverBufferImpl* pdbi = snd_async_handler_get_callback_private(ahandler);
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TRACE("callback called\n");
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switch (msg) {
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case WINE_WM_STARTING:
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if (state == WINE_WS_PLAYING)
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break;
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/* Commit another block (the entire buffer if it's a direct hw buffer) */
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periods = pdbi->mmap_mode == SND_PCM_TYPE_HW ? 0 : 1;
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DSDB_MMAPCopy(pdbi, periods);
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alsastate = snd_pcm_state(wwo->pcm);
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if ( alsastate == SND_PCM_STATE_SETUP )
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{
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err = snd_pcm_prepare(wwo->pcm);
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alsastate = snd_pcm_state(wwo->pcm);
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}
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snd_pcm_avail_update(wwo->pcm);
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/* Rewind, and initialise */
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frames = 0;
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snd_pcm_mmap_begin(wwo->pcm, &areas, &ofs, &frames);
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snd_pcm_mmap_commit(wwo->pcm, ofs, frames);
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snd_pcm_rewind(wwo->pcm, ofs);
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snd_pcm_hw_params_get_format(wwo->hw_params, &format);
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snd_pcm_format_set_silence(format, pdbi->mmap_buffer, pdbi->mmap_buflen_frames);
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pdbi->mmap_ppos = 0;
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snd_pcm_hw_params_get_period_size(wwo->hw_params, &wanted, NULL);
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pdbi->mmap_wpos = 2*wanted;
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if ( alsastate == SND_PCM_STATE_PREPARED )
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{
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err = snd_pcm_start(wwo->pcm);
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TRACE("Starting 0x%8p err: %d\n", wwo->pcm, err);
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}
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state = WINE_WS_PLAYING;
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break;
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case WINE_WM_STOPPING:
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state = WINE_WS_STOPPED;
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snd_pcm_drain(wwo->pcm);
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break;
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case WINE_WM_CLOSING:
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if (wwo->pcm != NULL)
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snd_pcm_drain(wwo->pcm);
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pdbi->mmap_thread = NULL;
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SetEvent(hEvent);
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goto out;
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default:
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ERR("Unhandled event %s", ALSA_getCmdString(msg));
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break;
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}
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if (hEvent != INVALID_HANDLE_VALUE)
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SetEvent(hEvent);
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} while (1);
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out:
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TRACE_(waveloop)("Destroyed MMAP thread\n");
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TRACE("Destroyed MMAP thread\n");
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return 0;
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}
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/**
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@ -196,29 +249,40 @@ static void DSDB_PCMCallback(snd_async_handler_t *ahandler)
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*/
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static int DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)
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{
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WINE_WAVEDEV * wwo = &(WOutDev[pdbi->drv->wDevID]);
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snd_pcm_format_t format;
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snd_pcm_uframes_t frames;
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snd_pcm_uframes_t ofs;
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snd_pcm_uframes_t avail;
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unsigned int channels;
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unsigned int bits_per_sample;
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unsigned int bits_per_frame;
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int err;
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WINE_WAVEDEV * wwo = &(WOutDev[pdbi->drv->wDevID]);
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snd_pcm_format_t format;
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snd_pcm_uframes_t frames, ofs, avail, psize;
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unsigned int channels, bits_per_sample, bits_per_frame;
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int err, mmap_mode;
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mmap_mode = snd_pcm_type(wwo->pcm);
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ALSA_InitRingMessage(&pdbi->mmap_ring);
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if (mmap_mode == SND_PCM_TYPE_HW) {
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TRACE("mmap'd buffer is a hardware buffer.\n");
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}
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else {
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#if 0 /* Horribly hack, shouldn't be used */
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err = snd_pcm_hw_params_get_period_size(wwo->hw_params, &psize, NULL);
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/* Set only a buffer of 2 period sizes, to decrease latency */
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if (err >= 0)
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err = snd_pcm_hw_params_set_buffer_size_near(wwo->pcm, wwo->hw_params, &psize);
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psize *= 2;
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if (err < 0) {
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ERR("Errno %d (%s) occured when setting buffer size\n", err, strerror(errno));
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}
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#endif
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TRACE("mmap'd buffer is an ALSA emulation of hardware buffer.\n");
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}
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err = snd_pcm_hw_params_get_period_size(wwo->hw_params, &psize, NULL);
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err = snd_pcm_hw_params_get_format(wwo->hw_params, &format);
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err = snd_pcm_hw_params_get_buffer_size(wwo->hw_params, &frames);
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err = snd_pcm_hw_params_get_channels(wwo->hw_params, &channels);
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bits_per_sample = snd_pcm_format_physical_width(format);
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bits_per_frame = bits_per_sample * channels;
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pdbi->mmap_mode = snd_pcm_type(wwo->pcm);
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if (pdbi->mmap_mode == SND_PCM_TYPE_HW) {
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TRACE("mmap'd buffer is a hardware buffer.\n");
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}
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else {
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TRACE("mmap'd buffer is an ALSA emulation of hardware buffer.\n");
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}
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if (TRACE_ON(wave))
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ALSA_TraceParameters(wwo->hw_params, NULL, FALSE);
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@ -246,33 +310,14 @@ static int DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)
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if (ofs > 0)
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err = snd_pcm_rewind(wwo->pcm, ofs);
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pdbi->mmap_buffer = pdbi->mmap_areas->addr;
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snd_pcm_format_set_silence(format, pdbi->mmap_buffer, frames );
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pdbi->mmap_thread = NULL;
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TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
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frames, pdbi->mmap_buflen_bytes, pdbi->mmap_buffer);
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err = snd_async_add_pcm_handler(&pdbi->mmap_async_handler, wwo->pcm, DSDB_PCMCallback, pdbi);
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if ( err < 0 )
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{
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ERR("add_pcm_handler failed. reason: %s\n", snd_strerror(err));
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return DSERR_GENERIC;
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}
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InitializeCriticalSection(&pdbi->mmap_crst);
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pdbi->mmap_crst.DebugInfo->Spare[0] = (DWORD_PTR)"WINEALSA_mmap_crst";
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return DS_OK;
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}
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static void DSDB_DestroyMMAP(IDsDriverBufferImpl* pdbi)
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{
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TRACE("mmap buffer %p destroyed\n", pdbi->mmap_buffer);
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pdbi->mmap_areas = NULL;
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pdbi->mmap_buffer = NULL;
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}
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static HRESULT WINAPI IDsDriverBufferImpl_QueryInterface(PIDSDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
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{
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/* IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface; */
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@ -299,9 +344,15 @@ static ULONG WINAPI IDsDriverBufferImpl_Release(PIDSDRIVERBUFFER iface)
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if (refCount)
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return refCount;
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if (This->mmap_thread != NULL)
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ALSA_AddRingMessage(&This->mmap_ring, WINE_WM_CLOSING, 0, 1);
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TRACE("mmap buffer %p destroyed\n", This->mmap_buffer);
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ALSA_DestroyRingMessage(&This->mmap_ring);
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if (This == This->drv->primary)
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This->drv->primary = NULL;
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DSDB_DestroyMMAP(This);
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HeapFree(GetProcessHeap(), 0, This);
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return 0;
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}
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@ -359,7 +410,7 @@ static HRESULT WINAPI IDsDriverBufferImpl_SetVolumePan(PIDSDRIVERBUFFER iface, P
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static HRESULT WINAPI IDsDriverBufferImpl_SetPosition(PIDSDRIVERBUFFER iface, DWORD dwNewPos)
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{
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/* IDsDriverImpl *This = (IDsDriverImpl *)iface; */
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TRACE("(%p,%d): stub\n",iface,dwNewPos);
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FIXME("(%p,%d): stub\n",iface,dwNewPos);
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return DSERR_UNSUPPORTED;
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}
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@ -368,105 +419,60 @@ static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
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{
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IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
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WINE_WAVEDEV * wwo = &(WOutDev[This->drv->wDevID]);
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snd_pcm_uframes_t hw_ptr;
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snd_pcm_uframes_t period_size;
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snd_pcm_uframes_t hw_pptr, hw_wptr;
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snd_pcm_state_t state;
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int dir;
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int err;
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if (wwo->hw_params == NULL) return DSERR_GENERIC;
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if (wwo->hw_params == NULL || wwo->pcm == NULL) return DSERR_GENERIC;
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dir=0;
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err = snd_pcm_hw_params_get_period_size(wwo->hw_params, &period_size, &dir);
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if (wwo->pcm == NULL) return DSERR_GENERIC;
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/** we need to track down buffer underruns */
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#if 0 /* Shouldn't be needed */
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/* we need to track down buffer underruns */
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DSDB_CheckXRUN(This);
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hw_ptr = This->mmap_ppos;
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#endif
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state = snd_pcm_state(wwo->pcm);
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if (state != SND_PCM_STATE_RUNNING)
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hw_ptr = 0;
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if (state == SND_PCM_STATE_RUNNING)
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{
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hw_pptr = This->mmap_ppos;
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hw_wptr = This->mmap_wpos;
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}
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else
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hw_pptr = hw_wptr = 0;
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if (lpdwPlay)
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*lpdwPlay = snd_pcm_frames_to_bytes(wwo->pcm, hw_ptr) % This->mmap_buflen_bytes;
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*lpdwPlay = snd_pcm_frames_to_bytes(wwo->pcm, hw_pptr) % This->mmap_buflen_bytes;
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if (lpdwWrite)
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*lpdwWrite = snd_pcm_frames_to_bytes(wwo->pcm, hw_ptr + period_size * 2) % This->mmap_buflen_bytes;
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*lpdwWrite = snd_pcm_frames_to_bytes(wwo->pcm, hw_wptr) % This->mmap_buflen_bytes;
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TRACE("hw_ptr=0x%08x, playpos=%d, writepos=%d\n", (unsigned int)hw_ptr, lpdwPlay?*lpdwPlay:-1, lpdwWrite?*lpdwWrite:-1);
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TRACE_(waveloop)("hw_pptr=0x%08x, hw_wptr=0x%08x playpos=%d, writepos=%d\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, lpdwPlay?*lpdwPlay:-1, lpdwWrite?*lpdwWrite:-1);
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return DS_OK;
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}
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static HRESULT WINAPI IDsDriverBufferImpl_Play(PIDSDRIVERBUFFER iface, DWORD dwRes1, DWORD dwRes2, DWORD dwFlags)
|
||||
{
|
||||
IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
|
||||
WINE_WAVEDEV * wwo = &(WOutDev[This->drv->wDevID]);
|
||||
snd_pcm_state_t state;
|
||||
int err;
|
||||
|
||||
TRACE("(%p,%x,%x,%x)\n",iface,dwRes1,dwRes2,dwFlags);
|
||||
|
||||
if (wwo->pcm == NULL) return DSERR_GENERIC;
|
||||
if (This->mmap_thread == NULL)
|
||||
This->mmap_thread = CreateThread(NULL, 0, DBSB_MMAPLoop, (LPVOID)(DWORD)This, 0, NULL);
|
||||
|
||||
state = snd_pcm_state(wwo->pcm);
|
||||
if ( state == SND_PCM_STATE_SETUP )
|
||||
{
|
||||
err = snd_pcm_prepare(wwo->pcm);
|
||||
state = snd_pcm_state(wwo->pcm);
|
||||
}
|
||||
if ( state == SND_PCM_STATE_PREPARED )
|
||||
{
|
||||
/* If we have a direct hardware buffer, we can commit the whole lot
|
||||
* immediately (periods = 0), otherwise we prime the queue with only
|
||||
* 2 periods.
|
||||
*
|
||||
* Why 2? We want a small number so that we don't get ahead of the
|
||||
* DirectSound mixer. But we don't want to ever let the buffer get
|
||||
* completely empty - having 2 periods gives us time to commit another
|
||||
* period when the first expires.
|
||||
*
|
||||
* The potential for buffer underrun is high, but that's the reality
|
||||
* of using a translated buffer (the whole point of DirectSound is
|
||||
* to provide direct access to the hardware).
|
||||
*
|
||||
* A better implementation would use the buffer Lock() and Unlock()
|
||||
* methods to determine how far ahead we can commit, and to rewind if
|
||||
* necessary.
|
||||
*/
|
||||
int periods = This->mmap_mode == SND_PCM_TYPE_HW ? 0 : 2;
|
||||
if (This->mmap_thread == NULL)
|
||||
ERR("Cannot create sound thread, don't expect any sound at all\n");
|
||||
else
|
||||
ALSA_AddRingMessage(&This->mmap_ring, WINE_WM_STARTING, 0, 1);
|
||||
|
||||
DSDB_MMAPCopy(This, periods);
|
||||
err = snd_pcm_start(wwo->pcm);
|
||||
}
|
||||
return DS_OK;
|
||||
}
|
||||
|
||||
static HRESULT WINAPI IDsDriverBufferImpl_Stop(PIDSDRIVERBUFFER iface)
|
||||
{
|
||||
IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
|
||||
WINE_WAVEDEV * wwo = &(WOutDev[This->drv->wDevID]);
|
||||
int err;
|
||||
DWORD play;
|
||||
DWORD write;
|
||||
|
||||
TRACE("(%p)\n",iface);
|
||||
|
||||
if (wwo->pcm == NULL) return DSERR_GENERIC;
|
||||
if (This->mmap_thread != NULL)
|
||||
ALSA_AddRingMessage(&This->mmap_ring, WINE_WM_STOPPING, 0, 1);
|
||||
|
||||
/* ring buffer wrap up detection */
|
||||
IDsDriverBufferImpl_GetPosition(iface, &play, &write);
|
||||
if ( play > write)
|
||||
{
|
||||
TRACE("writepos wrapper up\n");
|
||||
return DS_OK;
|
||||
}
|
||||
|
||||
if ( ( err = snd_pcm_drop(wwo->pcm)) < 0 )
|
||||
{
|
||||
ERR("error while stopping pcm: %s\n", snd_strerror(err));
|
||||
return DSERR_GENERIC;
|
||||
}
|
||||
return DS_OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue