Move code to be used by the IEC 61937 demuxer from spifenc.c into common

files spdif.h and spdif.c.

Patch by Anssi Hannula, anssi d hannula a iki d fi

Originally committed as revision 25715 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 42 insertions, 0 deletions

diff --git a/libavformat/spdif.c b/libavformat/spdif.c
new file mode 100644
index 0000000000..604141a261
--- /dev/null
+++ b/libavformat/spdif.c
@@ -0,0 +1,42 @@
+/*
+ * IEC 61937 common code
+ * Copyright (c) 2009 Bartlomiej Wolowiec
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "spdif.h"
+#include "libavutil/bswap.h"
+
+//TODO move to DSP
+void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w)
+{
+    int i;
+
+    for (i = 0; i + 8 <= w; i += 8) {
+        dst[i + 0] = av_bswap16(src[i + 0]);
+        dst[i + 1] = av_bswap16(src[i + 1]);
+        dst[i + 2] = av_bswap16(src[i + 2]);
+        dst[i + 3] = av_bswap16(src[i + 3]);
+        dst[i + 4] = av_bswap16(src[i + 4]);
+        dst[i + 5] = av_bswap16(src[i + 5]);
+        dst[i + 6] = av_bswap16(src[i + 6]);
+        dst[i + 7] = av_bswap16(src[i + 7]);
+    }
+    for (; i < w; i++)
+        dst[i + 0] = av_bswap16(src[i + 0]);
+}