| sbdsp.c (1.36) | sbdsp.c (1.37) |
|---|---|
| 1/* $NetBSD: sbdsp.c,v 1.36 1997/03/20 11:04:51 mycroft Exp $ */ | 1/* $NetBSD: sbdsp.c,v 1.37 1997/03/20 16:04:22 mycroft Exp $ */ |
| 2 3/* 4 * Copyright (c) 1991-1993 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: --- 616 unchanged lines hidden (view full) --- 626sbdsp_round_blocksize(addr, blk) 627 void *addr; 628 int blk; 629{ 630 register struct sbdsp_softc *sc = addr; 631 632 sc->sc_last_hs_size = 0; 633 | 2 3/* 4 * Copyright (c) 1991-1993 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: --- 616 unchanged lines hidden (view full) --- 626sbdsp_round_blocksize(addr, blk) 627 void *addr; 628 int blk; 629{ 630 register struct sbdsp_softc *sc = addr; 631 632 sc->sc_last_hs_size = 0; 633 |
| 634 /* Higher speeds need bigger blocks to avoid popping and silence gaps. */ 635 if (blk < NBPG/4 || blk > NBPG/2) { 636 if (ISSB16CLASS(sc)) { 637 if (sc->sc_orate > 8000 || sc->sc_irate > 8000) 638 blk = NBPG/2; 639 } else { 640 if (sc->sc_otc > SB_8K || sc->sc_itc < SB_8K) 641 blk = NBPG/2; 642 } 643 } | |
| 644 /* don't try to DMA too much at once, though. */ 645 if (blk > NBPG) 646 blk = NBPG; 647 if (sc->sc_channels == 2) 648 return (blk & ~1); /* must be even to preserve stereo separation */ 649 else 650 return (blk); /* Anything goes :-) */ 651} --- 1093 unchanged lines hidden --- | 634 /* don't try to DMA too much at once, though. */ 635 if (blk > NBPG) 636 blk = NBPG; 637 if (sc->sc_channels == 2) 638 return (blk & ~1); /* must be even to preserve stereo separation */ 639 else 640 return (blk); /* Anything goes :-) */ 641} --- 1093 unchanged lines hidden --- |