From f44de515d3b6098a0b585865c1a0c7b20d3075a6 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Mon, 7 Dec 2009 09:56:32 -0800
Subject: Initial check in of stagefright software AAC decoder based on PV
 source code.

---
 .../codecs/aacdec/long_term_prediction.h           | 122 +++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 media/libstagefright/codecs/aacdec/long_term_prediction.h

(limited to 'media/libstagefright/codecs/aacdec/long_term_prediction.h')

diff --git a/media/libstagefright/codecs/aacdec/long_term_prediction.h b/media/libstagefright/codecs/aacdec/long_term_prediction.h
new file mode 100644
index 0000000..014934b
--- /dev/null
+++ b/media/libstagefright/codecs/aacdec/long_term_prediction.h
@@ -0,0 +1,122 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/*
+
+ Pathname: long_term_prediction.h
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified prototype with array size passed in per review
+              comments.
+
+ Description: Changed prototype with "weight_index" instead of "weight".
+
+ Description: Removed some passed in buffer size variables since they are
+              not being used for long window.
+
+ Description: Temporarily define LTP_Q_FORMAT for current release.
+              Need to change function prototype and pass out Q_format
+              information later.
+
+ Description: Updated function prototype to reflect the usage of a
+ circular buffer by LTP.
+
+ Description:  Updated function interface with new return type
+
+ Who:                                   Date:
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file includes function prototype declaration for long_term_prediction().
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef LONG_TERM_PREDICTION_H
+#define LONG_TERM_PREDICTION_H
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "pv_audio_type_defs.h"
+#include "e_window_sequence.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here.
+----------------------------------------------------------------------------*/
+#define LTP_Q_FORMAT    (15)
+
+/*----------------------------------------------------------------------------
+; EXTERNAL VARIABLES REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; SIMPLE TYPEDEF'S
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; ENUMERATED TYPEDEF'S
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; STRUCTURES TYPEDEF'S
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; GLOBAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+    Int long_term_prediction(
+        WINDOW_SEQUENCE     win_seq,
+        const Int           weight_index,
+        const Int           delay[],
+        const Int16         buffer[],
+        const Int           buffer_offset,
+        const Int32         time_quant[],
+        Int32               predicted_samples[],    /* Q15 */
+        const Int           frame_length);
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+; END
+----------------------------------------------------------------------------*/
+#endif
+
+
-- 
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