Module Name: src
Committed By: nat
Date: Wed Nov 15 02:13:33 UTC 2017
Modified Files:
src/sys/dev: audio.c
Log Message:
The harware vc is rounded to a power of two then round_blocksize is called.
This improves playback and makes it possibile to use mmapped audio on usb.
To generate a diff of this commit:
cvs rdiff -u -r1.436 -r1.437 src/sys/dev/audio.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/audio.c
diff -u src/sys/dev/audio.c:1.436 src/sys/dev/audio.c:1.437
--- src/sys/dev/audio.c:1.436 Wed Nov 15 02:02:55 2017
+++ src/sys/dev/audio.c Wed Nov 15 02:13:33 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: audio.c,v 1.436 2017/11/15 02:02:55 nat Exp $ */
+/* $NetBSD: audio.c,v 1.437 2017/11/15 02:13:33 nat Exp $ */
/*-
* Copyright (c) 2016 Nathanial Sloss <nathanialsl...@yahoo.com.au>
@@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.436 2017/11/15 02:02:55 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.437 2017/11/15 02:13:33 nat Exp $");
#ifdef _KERNEL_OPT
#include "audio.h"
@@ -2021,27 +2021,19 @@ audio_init_ringbuffer(struct audio_softc
DPRINTF(("audio_init_ringbuffer: MI blksize=%d\n", blksize));
struct virtual_channel *hwvc = sc->sc_hwvc;
+
+ int tmpblksize = 1;
+ /* round blocksize to a power of 2 */
+ while (tmpblksize < blksize)
+ tmpblksize <<= 1;
+
+ blksize = tmpblksize;
+
if (sc->hw_if->round_blocksize &&
- (rp == &hwvc->sc_mpr || rp == &hwvc->sc_mrr)) {
+ (rp == &hwvc->sc_mpr || rp == &hwvc->sc_mrr || rp ==
+ &sc->sc_mixring.sc_mpr || rp == &sc->sc_mixring.sc_mrr)) {
blksize = sc->hw_if->round_blocksize(sc->hw_hdl, blksize,
mode, &rp->s.param);
- } else {
- int hwblksize = rp->s.bufsize;
- if (sc->hw_if->round_blocksize) {
- if (audio_can_capture(sc))
- hwblksize = sc->sc_hwvc->sc_mpr.blksize;
- else
- hwblksize = sc->sc_hwvc->sc_mrr.blksize;
- }
-
- int tmpblksize = 1;
- /* round blocksize to a power of 2 */
- while (tmpblksize < blksize)
- tmpblksize <<= 1;
-
- blksize = tmpblksize;
- if (blksize > hwblksize)
- blksize = hwblksize;
}
if (blksize <= 0)
