adpcm: split ADPCM encoders and decoders into separate files.

Move shared tables to a separate file as well.

1 files changed, 46 insertions, 0 deletions

diff --git a/libavcodec/adpcm.h b/libavcodec/adpcm.h
new file mode 100644
index 0000000000..aed5048d4a
--- /dev/null
+++ b/libavcodec/adpcm.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2001-2003 The ffmpeg Project
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * ADPCM encoder/decoder common header.
+ */
+
+#ifndef AVCODEC_ADPCM_H
+#define AVCODEC_ADPCM_H
+
+#define BLKSIZE 1024
+
+typedef struct ADPCMChannelStatus {
+    int predictor;
+    short int step_index;
+    int step;
+    /* for encoding */
+    int prev_sample;
+
+    /* MS version */
+    short sample1;
+    short sample2;
+    int coeff1;
+    int coeff2;
+    int idelta;
+} ADPCMChannelStatus;
+
+#endif /* AVCODEC_ADPCM_H */