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authorMax Kellermann <max@duempel.org>2012-03-21 18:45:51 +0100
committerMax Kellermann <max@duempel.org>2012-03-21 18:58:19 +0100
commit95d9bb6dfc1b90135c66b19d83eb17436908e3e8 (patch)
tree5d6cb452549d950610a45a06acf9d559b8f396ef /src/pcm_byteswap.c
parent33986075efb5b1c6462b83a553536adde1b81be0 (diff)
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pcm_byteswap: move code to libutil
Diffstat (limited to 'src/pcm_byteswap.c')
-rw-r--r--src/pcm_byteswap.c59
1 files changed, 21 insertions, 38 deletions
diff --git a/src/pcm_byteswap.c b/src/pcm_byteswap.c
index d56c3a87c..0a7e2fbb6 100644
--- a/src/pcm_byteswap.c
+++ b/src/pcm_byteswap.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * Copyright (C) 2003-2012 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
@@ -20,14 +20,10 @@
#include "config.h"
#include "pcm_byteswap.h"
#include "pcm_buffer.h"
-
-#include <glib.h>
+#include "util/byte_reverse.h"
#include <assert.h>
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "pcm"
-
const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer,
const int16_t *src, size_t len)
{
@@ -35,13 +31,10 @@ const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer,
assert(buf != NULL);
- const int16_t *src_end = src + len / sizeof(*src);
- int16_t *dest = buf;
- while (src < src_end) {
- const int16_t x = *src++;
- *dest++ = GUINT16_SWAP_LE_BE(x);
- }
+ const uint8_t *src8 = (const uint8_t *)src;
+ const void *src_end = src8 + len;
+ reverse_bytes_16((uint16_t *)buf, (const uint16_t *)src, src_end);
return buf;
}
@@ -52,41 +45,31 @@ const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer,
assert(buf != NULL);
- const int32_t *src_end = src + len / sizeof(*src);
- int32_t *dest = buf;
- while (src < src_end) {
- const int32_t x = *src++;
- *dest++ = GUINT32_SWAP_LE_BE(x);
- }
+ const uint8_t *src8 = (const uint8_t *)src;
+ const void *src_end = src8 + len;
+ reverse_bytes_32((uint32_t *)buf, (const uint32_t *)src, src_end);
return buf;
}
const void *
pcm_byteswap(struct pcm_buffer *buffer, enum sample_format format,
- const void *src, size_t size)
+ const void *_src, size_t size)
{
- switch (format) {
- case SAMPLE_FORMAT_UNDEFINED:
- case SAMPLE_FORMAT_S24:
- case SAMPLE_FORMAT_FLOAT:
- case SAMPLE_FORMAT_DSD_OVER_USB:
- /* not implemented */
- return NULL;
-
- case SAMPLE_FORMAT_S8:
- case SAMPLE_FORMAT_DSD:
+ const uint8_t *const src = _src;
+
+ if (size <= 1)
+ return src;
+
+ size_t sample_size = sample_format_size(format);
+ if (sample_size <= 1)
return src;
- case SAMPLE_FORMAT_S16:
- return pcm_byteswap_16(buffer, src, size);
+ assert(size % sample_size == 0);
- case SAMPLE_FORMAT_S24_P32:
- case SAMPLE_FORMAT_S32:
- return pcm_byteswap_32(buffer, src, size);
- }
+ uint8_t *dest = pcm_buffer_get(buffer, size);
+ assert(dest != NULL);
- /* unreachable */
- assert(false);
- return NULL;
+ reverse_bytes(dest, src, src + size, sample_size);
+ return dest;
}