Initial check in of stagefright software AAC decoder based on PV source code.

1 files changed, 174 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/aacdec/s_lt_pred_status.h b/media/libstagefright/codecs/aacdec/s_lt_pred_status.h
new file mode 100644
index 0000000..4b5b56e
--- /dev/null
+++ b/media/libstagefright/codecs/aacdec/s_lt_pred_status.h
@@ -0,0 +1,174 @@
+/* ------------------------------------------------------------------
+ * 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: LT_PRED_STATUS.h
+
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description:
+ (1) Merged in #defines from ltp_common.h, thereby eliminating that file.
+
+ Description:
+ (1) Modified to include the lines...
+
+    #ifdef __cplusplus
+    extern "C" {
+    #endif
+
+    #ifdef __cplusplus
+    }
+    #endif
+
+ (2) Updated the copyright header.
+
+ Description: Moved large ltp_buffer up to s_tDec_Int_Chan.h, since this
+ move allowed for other elements in this structure to be shared with
+ the fxpCoef array.
+
+ Description: Decreased size of LTP buffers from 4096 to 3072.  The upper 1024
+ elements in the LTP buffers were never touched in the code.  This saves
+ 4 kilobytes in memory.
+
+ Description: Decreased size of LTP buffers again from 3072 to 2048.  This
+ time, I realized that 1024 elements were duplicated in the 32-bit array
+ pVars->pChVars[]->time_quant.  Rather than copy this data EVERY frame
+ from a 32-bit to a 16-bit LTP buffer, the data is accessed only
+ when it is needed.  This saves both MIPS and memory.
+
+ Who:                       Date:
+ Description:
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ define LT_PRED_STATUS structure for pulse data decoding.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef S_LT_PRED_STATUS_H
+#define S_LT_PRED_STATUS_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /*----------------------------------------------------------------------------
+    ; INCLUDES
+    ----------------------------------------------------------------------------*/
+#include "pv_audio_type_defs.h"
+#include "e_blockswitching.h"
+
+    /*----------------------------------------------------------------------------
+    ; MACROS
+    ; Define module specific macros here
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; DEFINES
+    ; Include all pre-processor statements here.
+    ----------------------------------------------------------------------------*/
+    /*
+      Macro:    MAX_SHORT_WINDOWS
+      Purpose:  Number of short windows in one long window.
+      Explanation:  -  */
+#ifndef MAX_SHORT_WINDOWS
+#define MAX_SHORT_WINDOWS NSHORT
+#endif
+
+    /*
+      Macro:    MAX_SCFAC_BANDS
+      Purpose:  Maximum number of scalefactor bands in one frame.
+      Explanation:  -  */
+#ifndef MAX_SCFAC_BANDS
+#define MAX_SCFAC_BANDS MAXBANDS
+#endif
+
+    /*
+      Macro:    BLOCK_LEN_LONG
+      Purpose:  Length of one long window
+      Explanation:  -  */
+#ifndef BLOCK_LEN_LONG
+#define BLOCK_LEN_LONG LN2
+#endif
+
+
+    /*
+      Macro:    LTP_MAX_BLOCK_LEN_LONG
+      Purpose:  Informs the routine of the maximum block size used.
+      Explanation:  This is needed since the TwinVQ long window
+            is different from the AAC long window.  */
+#define LTP_MAX_BLOCK_LEN_LONG BLOCK_LEN_LONG //(2 * BLOCK_LEN_LONG) 
+
+    /*
+      Macro:    LT_BLEN
+      Purpose:  Length of the history buffer.
+      Explanation:  Has to hold 2 long windows of time domain data.  */
+#ifndef LT_BLEN
+#define LT_BLEN (2 * LTP_MAX_BLOCK_LEN_LONG)
+#endif
+
+    /*----------------------------------------------------------------------------
+    ; EXTERNAL VARIABLES REFERENCES
+    ; Declare variables used in this module but defined elsewhere
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; SIMPLE TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; ENUMERATED TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; STRUCTURES TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+    /*
+      Type:     LT_PRED_STATUS
+      Purpose:  Type of the struct holding the LTP encoding parameters.
+      Explanation:  -  */
+    typedef struct
+    {
+        Int weight_index;
+        Int win_prediction_used[MAX_SHORT_WINDOWS];
+        Int sfb_prediction_used[MAX_SCFAC_BANDS];
+        Bool ltp_data_present;
+
+        Int delay[MAX_SHORT_WINDOWS];
+    }
+    LT_PRED_STATUS;
+
+    /*----------------------------------------------------------------------------
+    ; GLOBAL FUNCTION DEFINITIONS
+    ; Function Prototype declaration
+    ----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* S_LT_PRED_STATUS_H */
+
+