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authorLennart Poettering <lennart@poettering.net>2007-10-01 20:16:28 +0000
committerLennart Poettering <lennart@poettering.net>2007-10-01 20:16:28 +0000
commit7d83e5c7816b5e343695a75ba58b32dbe1be969a (patch)
treebfd1dfc9b7c8f4a2aaf66c1b30e78355dee8c88a /src/interleave.c
parent762196328ab7e60f1d2908fd5a337d2ca99726dd (diff)
move all sources down to a seperate src/ tree
git-svn-id: file:///home/lennart/svn/public/libsydney/trunk@34 9ba3c220-e4d3-45a2-8aa3-73fcc9aff6ce
Diffstat (limited to 'src/interleave.c')
-rw-r--r--src/interleave.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/interleave.c b/src/interleave.c
new file mode 100644
index 0000000..d0470f7
--- /dev/null
+++ b/src/interleave.c
@@ -0,0 +1,64 @@
+#include <inttypes.h>
+
+#include "macro.h"
+#include "interleave.h"
+
+static void interleave8(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
+ uint8_t *dst = _dst;
+ const uint8_t *src = _src;
+
+ for (; bytes > 0; bytes--, src += sstr, dst += dstr)
+ *dst = *src;
+}
+
+static void interleave16(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
+ uint16_t *dst = _dst;
+ const uint16_t *src = _src;
+ unsigned n = bytes / sizeof(uint16_t);
+
+ for (; n > 0; n--, src += sstr/sizeof(uint16_t), dst += dstr/sizeof(uint16_t))
+ *dst = *src;
+}
+
+static void interleave24(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
+ uint8_t *dst = _dst;
+ const uint8_t *src = _src;
+ unsigned n = bytes / 3;
+
+ for (; n > 0; n--, src += sstr/3, dst += dstr/3) {
+ dst[0] = src[0];
+ dst[1] = src[1];
+ dst[2] = src[2];
+ }
+}
+
+static void interleave32(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
+ uint32_t *dst = _dst;
+ const uint32_t *src = _src;
+ unsigned n = bytes / sizeof(uint32_t);
+
+ for (; n > 0; n--, src += sstr/sizeof(uint32_t), dst += dstr/sizeof(uint32_t))
+ *dst = *src;
+}
+
+sa_interleave_func_t sa_get_interleave_func(sa_pcm_format_t f) {
+
+ static const sa_interleave_func_t funcs[_SA_PCM_FORMAT_MAX] = {
+ [SA_PCM_FORMAT_U8] = interleave8,
+ [SA_PCM_FORMAT_ULAW] = interleave8,
+ [SA_PCM_FORMAT_ALAW] = interleave8,
+ [SA_PCM_FORMAT_S16_LE] = interleave16,
+ [SA_PCM_FORMAT_S16_BE] = interleave16,
+ [SA_PCM_FORMAT_S24_LE] = interleave24,
+ [SA_PCM_FORMAT_S24_BE] = interleave24,
+ [SA_PCM_FORMAT_S32_LE] = interleave32,
+ [SA_PCM_FORMAT_S32_BE] = interleave32,
+ [SA_PCM_FORMAT_FLOAT32_LE] = interleave32,
+ [SA_PCM_FORMAT_FLOAT32_BE] = interleave32,
+ };
+
+ sa_assert(f < _SA_PCM_FORMAT_MAX);
+
+ return funcs[f];
+}
+