details: https://anonhg.NetBSD.org/src/rev/4e23341d71ea
branches: trunk
changeset: 826842:4e23341d71ea
user: nat <nat%NetBSD.org@localhost>
date: Mon Oct 02 06:06:43 2017 +0000
description:
Improve LINEAR_LINEARN macro - inparticular BE/LE conversions.
Addresses part of PR kern/52586 analyzed and reported by isaki@.
diffstat:
sys/dev/auconv.c | 116 ++++++++++++++++++++++++++++++++++++------------------
1 files changed, 76 insertions(+), 40 deletions(-)
diffs (178 lines):
diff -r 67b30d906971 -r 4e23341d71ea sys/dev/auconv.c
--- a/sys/dev/auconv.c Mon Oct 02 05:16:41 2017 +0000
+++ b/sys/dev/auconv.c Mon Oct 02 06:06:43 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: auconv.c,v 1.31 2017/07/30 00:47:48 nat Exp $ */
+/* $NetBSD: auconv.c,v 1.32 2017/10/02 06:06:43 nat Exp $ */
/*
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: auconv.c,v 1.31 2017/07/30 00:47:48 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: auconv.c,v 1.32 2017/10/02 06:06:43 nat Exp $");
#include <sys/types.h>
#include <sys/audioio.h>
@@ -542,6 +542,30 @@
d[--j] = 0; \
} \
} FILTER_LOOP_EPILOGUE(this->src, dst); \
+ } else if ((enc_src == AUDIO_ENCODING_SLINEAR_BE \
+ && enc_dst == AUDIO_ENCODING_SLINEAR_BE) \
+ || (enc_src == AUDIO_ENCODING_ULINEAR_BE \
+ && enc_dst == AUDIO_ENCODING_ULINEAR_BE)) { \
+ /* \
+ * slinearNbe -> slinearNbe \
+ * ulinearNbe -> ulinearNbe \
+ */ \
+ FILTER_LOOP_PROLOGUE(this->src, hw, dst, target, m) { \
+ i = valid; \
+ j = target; \
+ if (j < i) { \
+ j = 0; \
+ while (j < target) \
+ d[j++] = s[i++]; \
+ } else { \
+ j = 0; \
+ i = 0; \
+ while (i < valid) \
+ d[j++] = s[i++]; \
+ while (j < target) \
+ d[j++] = 0; \
+ } \
+ } FILTER_LOOP_EPILOGUE(this->src, dst); \
} else if ((enc_src == AUDIO_ENCODING_SLINEAR_LE \
&& enc_dst == AUDIO_ENCODING_SLINEAR_BE) \
|| (enc_src == AUDIO_ENCODING_ULINEAR_LE \
@@ -555,15 +579,15 @@
j = target; \
if (j < i) { \
while (j > 0) { \
- d[--j] = s[target - i]; \
- i--; \
+ d[target - j] = s[--i]; \
+ j--; \
} \
} else { \
while (j > i) \
d[--j] = 0; \
- while (j > 0) { \
- d[--j] = s[target - i]; \
- i--; \
+ j = 0; \
+ while (i > 0) { \
+ d[j++] = s[--i]; \
} \
} \
} FILTER_LOOP_EPILOGUE(this->src, dst); \
@@ -576,18 +600,14 @@
* slinearNbe -> ulinearNle \
*/ \
FILTER_LOOP_PROLOGUE(this->src, hw, dst, target, m) { \
- i = valid; \
+ i = 0; \
j = target; \
- if (j < i) { \
- while (j > 0) { \
- d[--j] = s[valid - i]; \
- i--; \
- } \
+ if (target < valid) { \
+ while (j > 0) \
+ d[--j] = s[i++]; \
} else { \
- while (j > 0) { \
- d[--j] = s[valid - i]; \
- i--; \
- } \
+ while (i < valid) \
+ d[--j] = s[i++]; \
while (j > 0) \
d[--j] = 0; \
} \
@@ -602,21 +622,42 @@
* ulinearNbe -> ulinearNle \
*/ \
FILTER_LOOP_PROLOGUE(this->src, hw, dst, target, m) { \
+ i = 0; \
+ j = target; \
+ if (target < valid) { \
+ while (j > 0) \
+ d[--j] = s[i++]; \
+ } else { \
+ while (i < valid) \
+ d[--j] = s[i++]; \
+ while (j > 0) \
+ d[--j] = 0; \
+ } \
+ } FILTER_LOOP_EPILOGUE(this->src, dst); \
+ } else if ((enc_src == AUDIO_ENCODING_SLINEAR_LE \
+ && enc_dst == AUDIO_ENCODING_ULINEAR_BE) \
+ || (enc_src == AUDIO_ENCODING_ULINEAR_LE \
+ && enc_dst == AUDIO_ENCODING_SLINEAR_BE)) { \
+ /* \
+ * slinearNle -> ulinearNbe \
+ * ulinearNle -> slinearNbe \
+ */ \
+ FILTER_LOOP_PROLOGUE(this->src, hw, dst, target, m) { \
i = valid; \
j = target; \
if (j < i) { \
- while (j > 0) { \
- d[--j] = s[valid - i]; \
- i--; \
+ j = 0; \
+ while (j < target) { \
+ d[j++] = s[i--]; \
} \
} else { \
- while (j > 0) { \
- d[--j] = s[valid - i]; \
- i--; \
- } \
- while (j > 0) \
- d[--j] = 0; \
+ j = 0; \
+ while (i > 0) \
+ d[j++] = s[--i]; \
+ while (j < target) \
+ d[j++] = 0; \
} \
+ d[0] ^= 0x80; \
} FILTER_LOOP_EPILOGUE(this->src, dst); \
} else if ((enc_src == AUDIO_ENCODING_SLINEAR_BE \
&& enc_dst == AUDIO_ENCODING_ULINEAR_BE) \
@@ -627,21 +668,16 @@
* ulinearNbe -> slinearNbe \
*/ \
FILTER_LOOP_PROLOGUE(this->src, hw, dst, target, m) { \
- i = valid; \
- j = target; \
- if (j < i) { \
- while (j > 0) { \
- d[target - j] = s[target - j]; \
- j--; \
- } \
+ i = 0; \
+ j = 0; \
+ if (target < valid) { \
+ while (j < target) \
+ d[j++] = s[i++]; \
} else { \
- while (i > 0) { \
- d[target - j] = s[target - j]; \
- j--; \
- i--; \
- } \
- while (j > 0) \
- d[target - j] = 0; \
+ while (i < valid) \
+ d[j++] = s[i++]; \
+ while (j < target) \
+ d[j++] = 0; \
} \
d[0] ^= 0x80; \
} FILTER_LOOP_EPILOGUE(this->src, dst); \