Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 160 insertions, 0 deletions

diff --git a/kernel/framework/audio/audiocnv.inc b/kernel/framework/audio/audiocnv.inc
new file mode 100644
index 0000000..27ac147
--- /dev/null
+++ b/kernel/framework/audio/audiocnv.inc
@@ -0,0 +1,160 @@
+/*
+ * Purpose: Helper functions used by audiofmt.c
+ */
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+
+/*ARGSUSED*/
+static int
+cnv_F8bits_T16bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		    unsigned char **tgtp, sample_parms * source, sample_parms * target)
+{
+  unsigned char *p1 = *srcp;
+  short *p2 = (short*)*tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 2 / 1);
+
+  l = len / 1;
+  for (i = 0; i < l; i++)
+    p2[i] = ((int) p1[i] - 128) << 8;
+
+  *srcl = len * 2 / 1;
+  *srcp = (unsigned char*)p2;
+  *tgtp = p1;
+
+  return 0;
+}
+
+/*ARGSUSED*/
+static int
+cnv_F8bits_T32bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		    unsigned char **tgtp, sample_parms * source, sample_parms * target)
+{
+  unsigned char *p1 = *srcp;
+  int *p2 = (int *)*tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 4 / 1);
+
+  l = len / 1;
+  for (i = 0; i < l; i++)
+    p2[i] = ((int) p1[i] - 128) << 24;
+
+  *srcl = len * 4 / 1;
+  *srcp = (unsigned char *)p2;
+  *tgtp = p1;
+
+  return 0;
+}
+
+/*ARGSUSED*/
+static int
+cnv_F16bits_T8bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		    unsigned char **tgtp, sample_parms * source, sample_parms * target)
+{
+  short *p1 = (short*)*srcp;
+  unsigned char *p2 = *tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 1 / 2);
+
+  l = len / 2;
+  for (i = 0; i < l; i++)
+    p2[i] = (((int) p1[i]) >> 8) + 128;
+
+  *srcl = len * 1 / 2;
+  *srcp = (unsigned char *)p2;
+  *tgtp = (unsigned char *)p1;
+
+  return 0;
+}
+
+/*ARGSUSED*/
+static int
+cnv_F16bits_T32bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		     unsigned char **tgtp, sample_parms * source,
+		     sample_parms * target)
+{
+  short *p1 = (short *)*srcp;
+  int *p2 = (int *)*tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 4 / 2);
+
+  l = len / 2;
+  for (i = 0; i < l; i++)
+    p2[i] = ((int) p1[i]) << 16;
+
+  *srcl = len * 4 / 2;
+  *srcp = (unsigned char *)p2;
+  *tgtp = (unsigned char *)p1;
+
+  return 0;
+}
+
+/*ARGSUSED*/
+static int
+cnv_F32bits_T8bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		    unsigned char **tgtp, sample_parms * source, sample_parms * target)
+{
+  int *p1 = (int*)*srcp;
+  unsigned char *p2 = *tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 1 / 4);
+
+  l = len / 4;
+  for (i = 0; i < l; i++)
+    p2[i] = (((int) p1[i]) >> 24) + 128;
+
+  *srcl = len * 1 / 4;
+  *srcp = p2;
+  *tgtp = (unsigned char *)p1;
+
+  return 0;
+}
+
+/*ARGSUSED*/
+static int
+cnv_F32bits_T16bits (adev_p adev, dmap_p dmap, unsigned char **srcp, int *srcl,
+		     unsigned char **tgtp, sample_parms * source,
+		     sample_parms * target)
+{
+  int *p1 = (int *)*srcp;
+  short *p2 = (short *)*tgtp;
+  int len = *srcl;
+  int i, l;
+
+  VMEM_CHECK (p1, len);
+  VMEM_CHECK (p2, len * 2 / 4);
+
+  l = len / 4;
+  for (i = 0; i < l; i++)
+    p2[i] = (((int) p1[i]) >> 16);
+
+  *srcl = len * 2 / 4;
+  *srcp = (unsigned char *)p2;
+  *tgtp = (unsigned char *)p1;
+
+  return 0;
+}