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diff --git a/media/libstagefright/codecs/mp3dec/src/pvmp3_reorder.cpp b/media/libstagefright/codecs/mp3dec/src/pvmp3_reorder.cpp
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+/* ------------------------------------------------------------------
+ * 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.
+ * -------------------------------------------------------------------
+ */
+/*
+------------------------------------------------------------------------------
+
+ PacketVideo Corp.
+ MP3 Decoder Library
+
+ Filename: pvmp3_reorder.cpp
+
+
+ Date: 09/21/2007
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+
+ Description:
+
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+
+ int32 xr[ ], rescaled data
+ struct gr_info_s *gr_info, granule structure
+ mp3Header *info, mp3 header info
+ int32 Scratch_mem[198] for temporary usage
+
+ Outputs:
+
+ int32 xr[ ], reordered data
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ If short blocks are used (block_type[gr][ch]=='10'), the rescaled data
+ xr[scf_band][window][freq_line] shall be reordered in polyphase subband
+ order, xr[subband][window][freq_line], prior to the IMDCT operation.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+ [1] ISO MPEG Audio Subgroup Software Simulation Group (1996)
+ ISO 13818-3 MPEG-2 Audio Decoder - Lower Sampling Frequency Extension
+
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "pv_mp3dec_fxd_op.h"
+#include "pvmp3_dec_defs.h"
+#include "pvmp3_reorder.h"
+#include "pvmp3_tables.h"
+#include "mp3_mem_funcs.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+void pvmp3_reorder(int32 xr[SUBBANDS_NUMBER*FILTERBANK_BANDS],
+ granuleInfo *gr_info,
+ int32 *used_freq_lines,
+ mp3Header *info,
+ int32 Scratch_mem[198])
+{
+ int32 sfreq = info->version_x + (info->version_x << 1);
+ sfreq += info->sampling_frequency;
+
+ if (gr_info->window_switching_flag && (gr_info->block_type == 2))
+ {
+ int32 sfb_lines;
+ int32 freq;
+ int32 src_line;
+ int32 sfb;
+ if (gr_info->mixed_block_flag)
+ {
+ /* REORDERING FOR REST SWITCHED SHORT */
+ sfb = 3; /* no reorder for low 2 subbands */
+ src_line = 36;
+ }
+ else
+ { /* pure short */
+ sfb = 0;
+ src_line = 0;
+ }
+ int16 ct = src_line;
+
+ for (; sfb < 13; sfb++)
+ {
+ if (*used_freq_lines > 3*mp3_sfBandIndex[sfreq].s[sfb+1])
+ {
+ sfb_lines = mp3_sfBandIndex[sfreq].s[sfb+1] - mp3_sfBandIndex[sfreq].s[sfb];
+
+ for (freq = 0; freq < 3*sfb_lines; freq += 3)
+ {
+ int32 tmp1 = xr[src_line];
+ int32 tmp2 = xr[src_line+(sfb_lines)];
+ int32 tmp3 = xr[src_line+(sfb_lines<<1)];
+ src_line++;
+ Scratch_mem[freq ] = tmp1;
+ Scratch_mem[freq+1] = tmp2;
+ Scratch_mem[freq+2] = tmp3;
+ }
+ src_line += (sfb_lines << 1);
+
+ pv_memcpy(&xr[ct], Scratch_mem, sfb_lines*3*sizeof(int32));
+ ct += sfb_lines + (sfb_lines << 1);
+
+ }
+ else
+ {
+
+ sfb_lines = mp3_sfBandIndex[sfreq].s[sfb+1] - mp3_sfBandIndex[sfreq].s[sfb];
+
+ for (freq = 0; freq < 3*sfb_lines; freq += 3)
+ {
+ int32 tmp1 = xr[src_line];
+ int32 tmp2 = xr[src_line+(sfb_lines)];
+ int32 tmp3 = xr[src_line+(sfb_lines<<1)];
+ src_line++;
+ Scratch_mem[freq ] = tmp1;
+ Scratch_mem[freq+1] = tmp2;
+ Scratch_mem[freq+2] = tmp3;
+ }
+
+ pv_memcpy(&xr[ct], Scratch_mem, sfb_lines*3*sizeof(int32));
+
+ *used_freq_lines = mp3_sfBandIndex[sfreq].s[sfb+1] * 3;
+
+ sfb = 13; /* force out of the for-loop */
+ }
+ }
+ }
+}
+
+
+
+
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