--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/Codecs/Src/Gsm610CodecCommon/gsm610fr.cpp Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,526 @@
+// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// Polymorphic DLL implementation of GSM 6.10 full rate (FR) speech coder
+// and decoder objects.
+// This codec is based on ANSI C simulation codes. For this implementation
+// (polymorphic DLL) the original ANSI C codes have been modified slightly:
+// - The original .c files were renamed to .cpp files.
+// - All global varibles (codec's state) are now encoder's or decoder's
+// private member variables.
+// - Because codec's state is in the codec object, an extra variable -
+// a pointer codec object - have been added to some original routines.
+// - Global tables are now const C++ tables in tables.h header file.
+// - VAD and DTX modules have been removed from the original routines.
+// - Due to bug in GNU tool chain all array indexes of type [i-1] in
+// rpeltp.cpp have been removed and changed to [j] type.
+// - multr, L_add, L_mac from basicop.cpp inlined
+// INCLUDES
+//
+//
+
+#include "gsm610fr.h"
+#include "codec.h"
+#include <e32uid.h>
+
+
+// LOCAL FUNCTIONS
+//===================================================================
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ ConstructL
+
+ This function implements the second phase construction of GSM610FR_Encoder
+ class. Function binds the encoder to given input and output streams and
+ resets encoder.
+
+ Parameters: RReadStream aInStrm Handle to input stream (16 bit
+ PCM speech data)
+ RWriteStream aOutStrm Handle to output stream (encoded
+ speech data)
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Encoder::ConstructL()
+ {
+ ::reset_encoder(this);
+ iOddFrame = TRUE;
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ ~GSM610FR_Encoder
+
+ Empty encoder destructor.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C CGSM610FR_Encoder::~CGSM610FR_Encoder()
+ {
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ StartL
+
+ Start encoder object. Initialize codec status.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Encoder::StartL()
+ {
+ ::reset_encoder(this);
+ iOddFrame = TRUE;
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ ExecuteL
+
+ Execute encoder object. Read one speech frame from the input stream,
+ RPELTP encode it and write the encoded frame to output stream.
+
+ Parameters: none
+
+ Return Values: none
+
+ Leave Handling:
+
+ If the length of data available in the input stream is less than
+ FRAMESIZE then the function leaves with KErrEof.
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Encoder::ExecuteL(TUint8* aInBuf, TUint8* aOutBuf)
+{
+ TInt16* inBufPtr = (TInt16*) aInBuf;
+
+
+ for (TInt frame = 0; frame < 2; frame++)
+ {
+ ::RPELTP_encoder(this, inBufPtr, &iCodeBuf);
+
+ if ( iOddFrame )
+ {
+ PackFrame0 (&iCodeBuf, (TInt8*) aOutBuf);
+ }
+ else
+ {
+ PackFrame1 (&iCodeBuf, (TInt8*) aOutBuf);
+ }
+
+ iOddFrame = !iOddFrame;
+ inBufPtr += FRAMESIZE;
+ }
+
+}
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ StopL
+
+ Stop encoder object. Flush out last frames, if necessary.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Encoder::StopL()
+ {
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ PackFrame0
+
+ Pack the codewords of the even frame into pack buffer.
+
+ Packing as in MS gsm610 encoder.
+
+ Parameters: struct codes* aCodeBuf Code words for one speech frame.
+
+ Return Values: none
+
+
+-----------------------------------------------------------------------------
+*/
+void CGSM610FR_Encoder::PackFrame0(struct codes* aCodeBuf, TInt8* pbuf)
+ {
+ TInt16* LAR = aCodeBuf->LARc;
+
+ // pack the LARc[0..7] into the first 4.5 bytes
+ *pbuf++ = (TUint8)(((LAR[0] ) & 0x3F) | ((LAR[1] << 6) & 0xC0));
+ *pbuf++ = (TUint8)(((LAR[1] >> 2) & 0x0F) | ((LAR[2] << 4) & 0xF0));
+ *pbuf++ = (TUint8)(((LAR[2] >> 4) & 0x01) | ((LAR[3] << 1) & 0x3E) | ((LAR[4] << 6) & 0xC0));
+ *pbuf++ = (TUint8)(((LAR[4] >> 2) & 0x03) | ((LAR[5] << 2) & 0x3C) | ((LAR[6] << 6) & 0xC0));
+ *pbuf = (TUint8)(((LAR[6] >> 2) & 0x01) | ((LAR[7] << 1) & 0x0E));
+
+ // pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+ for(TInt i = 0; i < 4; i++)
+ {
+ struct sfcodes& c = aCodeBuf->sfc[i];
+ *pbuf++ |= ((c.Nc << 4) & 0xF0);
+ *pbuf++ = (TUint8)(((c.Nc >> 4) & 0x07) | ((c.bc << 3) & 0x18) | ((c.Mc << 5) & 0x60) | ((c.xmaxc << 7) & 0x80));
+ *pbuf++ = (TUint8)(((c.xmaxc >> 1) & 0x1F) | ((c.xMc[0] << 5) & 0xE0));
+ *pbuf++ = (TUint8)((c.xMc[1] & 0x07) | ((c.xMc[2] << 3) & 0x38) | ((c.xMc[3] << 6) & 0xC0));
+ *pbuf++ = (TUint8)(((c.xMc[3] >> 2) & 0x01) | ((c.xMc[4] << 1) & 0x0E) | ((c.xMc[5] << 4) & 0x70) | ((c.xMc[6] << 7) & 0x80));
+ *pbuf++ = (TUint8)(((c.xMc[6] >> 1) & 0x03) | ((c.xMc[7] << 2) & 0x1C) | ((c.xMc[8] << 5) & 0xE0));
+ *pbuf++ = (TUint8)((c.xMc[9] & 0x07) | ((c.xMc[10] << 3) & 0x38) | ((c.xMc[11] << 6) & 0xC0));
+ *pbuf = (TUint8)(((c.xMc[11] >> 2) & 0x01) | ((c.xMc[12] << 1) & 0x0E));
+ }
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Encoder
+
+ PackFrame1
+
+ Pack the codewords of the odd frame into pack buffer.
+
+ Packing as in MS gsm610 encoder.
+
+ Parameters: struct codes* aCodeBuf Code words for one speech frame.
+
+ Return Values: none
+
+
+-----------------------------------------------------------------------------
+*/
+void CGSM610FR_Encoder::PackFrame1(struct codes* aCodeBuf, TInt8* pbuf)
+ {
+ TInt16* LAR = aCodeBuf->LARc;
+
+ pbuf += (PACKSIZE / 2);
+ TInt8 pbufZero = pbuf[0];
+
+ // pack the LARc[0..7] into the first 4.5 bytes, starting with the msb of the first byte
+ *pbuf++ = (TUint8) (pbufZero | ((LAR[0] << 4) & 0xF0));
+ *pbuf++ = (TUint8)(((LAR[0] >> 4) & 0x03) | ((LAR[1] << 2) & 0xFC));
+ *pbuf++ = (TUint8)(((LAR[2] ) & 0x1F) | ((LAR[3] << 5) & 0xE0));
+ *pbuf++ = (TUint8)(((LAR[3] >> 3) & 0x03) | ((LAR[4] << 2) & 0x3C) | ((LAR[5] << 6) & 0xC0));
+ *pbuf++ = (TUint8)(((LAR[5] >> 2) & 0x03) | ((LAR[6] << 2) & 0x1C) | ((LAR[7] << 5) & 0xE0));
+
+ // pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+ for(TInt i = 0; i < 4; i++)
+ {
+ struct sfcodes& c = aCodeBuf->sfc[i];
+ *pbuf++ = (TUint8)((c.Nc & 0x7F) | ((c.bc << 7) & 0x80));
+ *pbuf++ = (TUint8)(((c.bc >> 1) & 0x01) | ((c.Mc << 1) & 0x06) | ((c.xmaxc << 3) & 0xF8));
+ *pbuf++ = (TUint8)(((c.xmaxc >> 5) & 0x01) | ((c.xMc[0] << 1) & 0x0E) | ((c.xMc[1] << 4) & 0x70) | ((c.xMc[2] << 7) & 0x80));
+ *pbuf++ = (TUint8)(((c.xMc[2] >> 1) & 0x03) | ((c.xMc[3] << 2) & 0x1C) | ((c.xMc[4] << 5) & 0xE0));
+ *pbuf++ = (TUint8)(((c.xMc[5]) & 0x07) | ((c.xMc[6] << 3) & 0x38) | ((c.xMc[7] << 6) & 0xC0));
+ *pbuf++ = (TUint8)(((c.xMc[7] >> 2) & 0x01) | ((c.xMc[8] << 1) & 0x0E) | ((c.xMc[9] << 4) & 0x70) | ((c.xMc[10] << 7) & 0x80));
+ *pbuf++ = (TUint8)(((c.xMc[10] >> 1) & 0x03) | ((c.xMc[11] << 2) & 0x1C) | ((c.xMc[12] << 5) & 0xE0));
+ }
+ }
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ ConstructL
+
+ This function implements the second phase construction of GSM610FR_Decoder
+ class. Function binds the decoder to given input and output streams and
+ resets decoder.
+
+ Parameters: RReadStream aInStrm Handle to input stream (encoded
+ speech data)
+
+ RWriteStream aOutStrm Handle to output stream (16 bit
+ PCM speech data)
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Decoder::ConstructL()
+ {
+ ::reset_decoder(this);
+ iOddFrame = TRUE;
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ ~GSM610FR_Decoder
+
+ Empty decoder destructor.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C CGSM610FR_Decoder::~CGSM610FR_Decoder()
+ {
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ StartL
+
+ Start decoder object. Initialize codec status.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Decoder::StartL()
+ {
+ ::reset_decoder(this);
+ iOddFrame = TRUE;
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ ExecuteL
+
+ Execute decoder object. Read one encoded speech frame from the input
+ stream RPELTP decode it and write the decoded frame to output stream.
+
+ Parameters: none
+
+ Return Values: none
+
+ Leave Handling:
+
+ If the length of data available in the input stream is less than size
+ of one encoded speech frame then the function leaves with KErrEof.
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Decoder::ExecuteL(TUint8* aInBuf, TUint8* aOutBuf)
+{
+
+ TInt16* outBufPtr = (TInt16*) aOutBuf;
+
+
+ // Process both odd and even frames
+
+ for (TInt frame = 0; frame < 2; frame++)
+ {
+ if ( iOddFrame )
+ {
+ UnpackFrame0(&iCodeBuf, (TInt8*) aInBuf);
+ }
+ else
+ {
+ UnpackFrame1(&iCodeBuf, (TInt8*) aInBuf);
+ }
+
+
+ ::RPELTP_decoder(this, &iCodeBuf, outBufPtr);
+
+ iOddFrame = !iOddFrame;
+ outBufPtr += FRAMESIZE;
+
+ }
+
+}
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ StopL
+
+ Stop decoder object. Flush out last frames, if necessary.
+
+ Parameters: none
+
+ Return Values: none
+
+-----------------------------------------------------------------------------
+*/
+EXPORT_C void CGSM610FR_Decoder::StopL()
+ {
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ UnpackFrame0
+
+ Unpack the codewords of the even frame from pack buffer.
+
+ Packing as in MS gsm610 encoder.
+
+ Parameters: struct codes* aCodeBuf Code words for one speech frame
+ are unpacked into this structure.
+
+ Return Values: none
+
+
+-----------------------------------------------------------------------------
+*/
+void CGSM610FR_Decoder::UnpackFrame0(struct codes* aCodeBuf, TInt8* pbuf)
+ {
+ TInt16* LAR = aCodeBuf->LARc;
+
+ // unpack the LAR[0..7] from the first 4.5 bytes
+ LAR[0] = (TInt16)((pbuf[0] & 0x3F));
+ LAR[1] = (TInt16)(((pbuf[0] & 0xC0) >> 6) | ((pbuf[1] & 0x0F) << 2));
+ LAR[2] = (TInt16)(((pbuf[1] & 0xF0) >> 4) | ((pbuf[2] & 0x01) << 4));
+ LAR[3] = (TInt16)(((pbuf[2] & 0x3E) >> 1));
+ LAR[4] = (TInt16)(((pbuf[2] & 0xC0) >> 6) | ((pbuf[3] & 0x03) << 2));
+ LAR[5] = (TInt16)(((pbuf[3] & 0x3C) >> 2));
+ LAR[6] = (TInt16)(((pbuf[3] & 0xC0) >> 6) | ((pbuf[4] & 0x01) << 2));
+ LAR[7] = (TInt16)(((pbuf[4] & 0x0E) >> 1));
+
+ // unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+ for(TInt i = 0; i < 4; i++)
+ {
+ struct sfcodes& c = aCodeBuf->sfc[i];
+#define sfb(x) (pbuf[4+i*7+x])
+ c.Nc = (TInt16)(((sfb(0) & 0xF0) >> 4) | ((sfb(1) & 0x07) << 4));
+ c.bc = (TInt16)(((sfb(1) & 0x18) >> 3));
+ c.Mc = (TInt16)(((sfb(1) & 0x60) >> 5));
+ c.xmaxc = (TInt16)(((sfb(1) & 0x80) >> 7) | ((sfb(2) & 0x1F) << 1));
+ c.xMc[0] = (TInt16)(((sfb(2) & 0xE0) >> 5));
+ c.xMc[1] = (TInt16)((sfb(3) & 0x07));
+ c.xMc[2] = (TInt16)(((sfb(3) & 0x3C) >> 3));
+ c.xMc[3] = (TInt16)(((sfb(3) & 0xC0) >> 6) | ((sfb(4) & 0x01) << 2));
+ c.xMc[4] = (TInt16)(((sfb(4) & 0x0E) >> 1));
+ c.xMc[5] = (TInt16)(((sfb(4) & 0x70) >> 4));
+ c.xMc[6] = (TInt16)(((sfb(4) & 0x80) >> 7) | ((sfb(5) & 0x03) << 1));
+ c.xMc[7] = (TInt16)(((sfb(5) & 0x1C) >> 2));
+ c.xMc[8] = (TInt16)(((sfb(5) & 0xE0) >> 5));
+ c.xMc[9] = (TInt16)((sfb(6) & 0x07));
+ c.xMc[10] = (TInt16)(((sfb(6) & 0x38) >> 3));
+ c.xMc[11] = (TInt16)(((sfb(6) & 0xC0) >> 6) | ((sfb(7) & 0x01) << 2));
+ c.xMc[12] = (TInt16)(((sfb(7) & 0x0E) >> 1));
+#undef sfb
+ }
+ }
+
+
+/*
+-----------------------------------------------------------------------------
+
+ GSM610FR_Decoder
+
+ UnpackFrame1
+
+ Unpack the codewords of the odd frame from pack buffer.
+
+ Packing as in MS gsm610 encoder.
+
+ Parameters: struct codes* aCodeBuf Code words for one speech frame
+ are unpacked into this structure.
+
+ Return Values: none
+
+
+-----------------------------------------------------------------------------
+*/
+void CGSM610FR_Decoder::UnpackFrame1(struct codes* aCodeBuf, TInt8* pbuf)
+{
+ TInt16* LAR = aCodeBuf->LARc;
+
+ // unpack the LAR[0..7] from the first 4.5 bytes
+ LAR[0] = (TInt16)(((pbuf[32] & 0xF0) >> 4) | ((pbuf[33] & 0x03) << 4));
+ LAR[1] = (TInt16)(((pbuf[33] & 0xFC) >> 2));
+ LAR[2] = (TInt16)(((pbuf[34] & 0x1F)));
+ LAR[3] = (TInt16)(((pbuf[34] & 0xE0) >> 5) | ((pbuf[35] & 0x03) << 3));
+ LAR[4] = (TInt16)(((pbuf[35] & 0x3C) >> 2));
+ LAR[5] = (TInt16)(((pbuf[35] & 0xC0) >> 6) | ((pbuf[36] & 0x03) << 2));
+ LAR[6] = (TInt16)(((pbuf[36] & 0x1C) >> 2));
+ LAR[7] = (TInt16)(((pbuf[36] & 0xE0) >> 5));
+
+ // unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+ for(TInt i = 0; i < 4; i++)
+ {
+ struct sfcodes& c = aCodeBuf->sfc[i];
+#define sfb(x) (pbuf[37+i*7+x])
+ c.Nc = (TInt16)(sfb(0) & 0x7F);
+ c.bc = (TInt16)(((sfb(0) & 0x80) >> 7) | ((sfb(1) & 0x01) << 1));
+ c.Mc = (TInt16)(((sfb(1) & 0x06) >> 1));
+ c.xmaxc = (TInt16)(((sfb(1) & 0xF8) >> 3) | ((sfb(2) & 0x01) << 5));
+ c.xMc[0] = (TInt16)(((sfb(2) & 0x0E) >> 1));
+ c.xMc[1] = (TInt16)(((sfb(2) & 0x70) >> 4));
+ c.xMc[2] = (TInt16)(((sfb(2) & 0x80) >> 7) | ((sfb(3) & 0x03) << 1));
+ c.xMc[3] = (TInt16)(((sfb(3) & 0x1C) >> 2));
+ c.xMc[4] = (TInt16)(((sfb(3) & 0xE0) >> 5));
+ c.xMc[5] = (TInt16)(((sfb(4) & 0x07)));
+ c.xMc[6] = (TInt16)(((sfb(4) & 0x38) >> 3));
+ c.xMc[7] = (TInt16)(((sfb(4) & 0xC0) >> 6) | ((sfb(5) & 0x01) << 2));
+ c.xMc[8] = (TInt16)(((sfb(5) & 0x0E) >> 1));
+ c.xMc[9] = (TInt16)(((sfb(5) & 0x70) >> 4));
+ c.xMc[10] = (TInt16)(((sfb(5) & 0x80) >> 7) | ((sfb(6) & 0x03) << 1));
+ c.xMc[11] = (TInt16)(((sfb(6) & 0x1C) >> 2));
+ c.xMc[12] = (TInt16)(((sfb(6) & 0xE0) >> 5));
+
+#undef sfb
+ }
+ }
+
+
+//-----------------------------------------------------------------------------
+// End of File
+//-----------------------------------------------------------------------------