Initial support for unified ADPCM decoder

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3757 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 32 insertions, 0 deletions

diff --git a/adpcm.h b/adpcm.h
new file mode 100644
index 0000000000..c8b23d2264
--- /dev/null
+++ b/adpcm.h
@@ -0,0 +1,32 @@
+#ifndef ADPCM_H
+#define ADPCM_H
+
+#define IMA_ADPCM_BLOCK_SIZE 0x22
+#define IMA_ADPCM_SAMPLES_PER_BLOCK 0x40
+
+static int adpcm_step[89] =
+{
+  7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+  19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+  50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+  130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+  337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+  876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+  2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+  5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+  15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+};
+
+static int adpcm_index[16] =
+{
+  -1, -1, -1, -1, 2, 4, 6, 8,
+  -1, -1, -1, -1, 2, 4, 6, 8
+};
+
+static int format_0x62_table[16] =
+{
+  1, 3, 5, 7, 9, 11, 13, 15,
+  -1, -3, -5, -7, -9, -11, -13, -15
+};
+
+#endif