From 7e68c91e247ba20fc8a08cf5a6cf2b75984f1aeb Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Sun, 14 Oct 2012 23:41:12 +0200
Subject: rmdec: Move SIPR code shared with Matroska demuxer to a separate file

---
 libavformat/rmdec.c | 42 +-----------------------------------------
 1 file changed, 1 insertion(+), 41 deletions(-)

(limited to 'libavformat/rmdec.c')

diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index eefd2c5082..07d218e311 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -25,6 +25,7 @@
 #include "avformat.h"
 #include "internal.h"
 #include "riff.h"
+#include "rmsipr.h"
 #include "rm.h"
 
 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/Atrac
@@ -59,21 +60,6 @@ typedef struct {
     int audio_pkt_cnt; ///< Output packet counter
 } RMDemuxContext;
 
-static const unsigned char sipr_swaps[38][2] = {
-    {  0, 63 }, {  1, 22 }, {  2, 44 }, {  3, 90 },
-    {  5, 81 }, {  7, 31 }, {  8, 86 }, {  9, 58 },
-    { 10, 36 }, { 12, 68 }, { 13, 39 }, { 14, 73 },
-    { 15, 53 }, { 16, 69 }, { 17, 57 }, { 19, 88 },
-    { 20, 34 }, { 21, 71 }, { 24, 46 }, { 25, 94 },
-    { 26, 54 }, { 28, 75 }, { 29, 50 }, { 32, 70 },
-    { 33, 92 }, { 35, 74 }, { 38, 85 }, { 40, 56 },
-    { 42, 87 }, { 43, 65 }, { 45, 59 }, { 48, 79 },
-    { 49, 93 }, { 51, 89 }, { 55, 95 }, { 61, 76 },
-    { 67, 83 }, { 77, 80 }
-};
-
-const unsigned char ff_sipr_subpk_size[4] = { 29, 19, 37, 20 };
-
 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
 {
     int i;
@@ -719,32 +705,6 @@ rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
     }
 }
 
-/**
- * Perform 4-bit block reordering for SIPR data.
- * @todo This can be optimized, e.g. use memcpy() if data blocks are aligned
- */
-void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize)
-{
-    int n, bs = sub_packet_h * framesize * 2 / 96; // nibbles per subpacket
-
-    for (n = 0; n < 38; n++) {
-        int j;
-        int i = bs * sipr_swaps[n][0];
-        int o = bs * sipr_swaps[n][1];
-
-        /* swap 4bit-nibbles of block 'i' with 'o' */
-        for (j = 0; j < bs; j++, i++, o++) {
-            int x = (buf[i >> 1] >> (4 * (i & 1))) & 0xF,
-                y = (buf[o >> 1] >> (4 * (o & 1))) & 0xF;
-
-            buf[o >> 1] = (x << (4 * (o & 1))) |
-                (buf[o >> 1] & (0xF << (4 * !(o & 1))));
-            buf[i >> 1] = (y << (4 * (i & 1))) |
-                (buf[i >> 1] & (0xF << (4 * !(i & 1))));
-        }
-    }
-}
-
 int
 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
                     AVStream *st, RMStream *ast, int len, AVPacket *pkt,
-- 
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