| /* ------------------------------------------------------------------ |
| * 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. |
| * ------------------------------------------------------------------- |
| */ |
| /**************************************************************************************** |
| Portions of this file are derived from the following 3GPP standard: |
| |
| 3GPP TS 26.073 |
| ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec |
| Available from http://www.3gpp.org |
| |
| (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) |
| Permission to distribute, modify and use this file under the standard license |
| terms listed above has been obtained from the copyright holder. |
| ****************************************************************************************/ |
| /* |
| ------------------------------------------------------------------------------ |
| |
| |
| |
| Pathname: ./audio/gsm-amr/c/src/sp_enc.c |
| Funtions: GSMInitEncode |
| Speech_Encode_Frame_reset |
| GSMEncodeFrameExit |
| Speech_Encode_Frame_First |
| GSMEncodeFrame |
| |
| Date: 02/07/2002 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: Cleaned up INCLUDES. removed inclusion of basic_op.h and count.h. |
| |
| |
| Description: Revert back to Speech_Encode_Frame_reset() and |
| Speech_Encode_Frame_First |
| |
| Description: Replaced OSCL mem type functions and eliminated include |
| files that now are chosen by OSCL definitions |
| |
| Description: Replaced "int" and/or "char" with OSCL defined types. |
| |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| MODULE DESCRIPTION |
| |
| These functions comprise the pre filtering and encoding of one speech frame. |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| #include <stdlib.h> |
| |
| #include "sp_enc.h" |
| #include "typedef.h" |
| #include "cnst.h" |
| #include "set_zero.h" |
| #include "pre_proc.h" |
| #include "prm2bits.h" |
| #include "mode.h" |
| #include "cod_amr.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 VARIABLE DEFINITIONS |
| ; Variable declaration - defined here and used outside this module |
| ----------------------------------------------------------------------------*/ |
| |
| /* |
| ------------------------------------------------------------------------------ |
| FUNCTION NAME: GSMInitEncode |
| ------------------------------------------------------------------------------ |
| INPUT AND OUTPUT DEFINITIONS |
| Inputs: |
| state = pointer to an array of pointers to structures of type |
| Speech_Decode_FrameState |
| dtx = flag to turn off or turn on DTX (Flag) |
| id = pointer to an array whose contents are of type char |
| |
| Outputs: |
| pre_state field of the structure pointed to by the pointer pointed to |
| by state is set to NULL |
| cod_amr_state field of the structure pointed to by the pointer pointed to |
| by state is set to NULL |
| dtx field of the structure pointed to by the pointer pointed to by state |
| is set to the input dtx |
| |
| Returns: |
| return_value = set to zero, if initialization was successful; -1, |
| otherwise (int) |
| |
| Global Variables Used: |
| None |
| |
| Local Variables Needed: |
| None |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| This function allocates memory for filter structure and initializes state |
| memory |
| |
| ------------------------------------------------------------------------------ |
| REQUIREMENTS |
| |
| None. |
| |
| ------------------------------------------------------------------------------ |
| REFERENCES |
| |
| sp_enc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| Note: Original function name of Speech_Encode_Frame_init was changed to |
| GSMInitEncode in the Code section. |
| |
| int Speech_Encode_Frame_init (void **state_data, |
| Flag dtx, |
| char *id) |
| { |
| Speech_Encode_FrameState* s; |
| |
| if (state_data == NULL){ |
| fprintf(stderr, "Speech_Encode_Frame_init: invalid parameter\n"); |
| return -1; |
| } |
| *state_data = NULL; |
| |
| // allocate memory |
| if ((s= (Speech_Encode_FrameState *) malloc(sizeof(Speech_Encode_FrameState))) == NULL){ |
| fprintf(stderr, "Speech_Encode_Frame_init: can not malloc state " |
| "structure\n"); |
| return -1; |
| } |
| |
| s->complexityCounter = getCounterId(id); |
| |
| s->pre_state = NULL; |
| s->cod_amr_state = NULL; |
| s->dtx = dtx; |
| |
| if (Pre_Process_init(&s->pre_state) || |
| cod_amr_init(&s->cod_amr_state, s->dtx)) { |
| GSMEncodeFrameExit(&s); |
| return -1; |
| } |
| |
| Speech_Encode_Frame_reset(s); |
| *state_data = (void *)s; |
| |
| return 0; |
| } |
| |
| |
| ------------------------------------------------------------------------------ |
| RESOURCES USED [optional] |
| |
| When the code is written for a specific target processor the |
| the resources used should be documented below. |
| |
| HEAP MEMORY USED: x bytes |
| |
| STACK MEMORY USED: x bytes |
| |
| CLOCK CYCLES: (cycle count equation for this function) + (variable |
| used to represent cycle count for each subroutine |
| called) |
| where: (cycle count variable) = cycle count for [subroutine |
| name] |
| |
| ------------------------------------------------------------------------------ |
| CAUTION [optional] |
| [State any special notes, constraints or cautions for users of this function] |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| Word16 GSMInitEncode(void **state_data, |
| Flag dtx, |
| Word8 *id) |
| { |
| Speech_Encode_FrameState* s; |
| |
| OSCL_UNUSED_ARG(id); |
| |
| if (state_data == NULL) |
| { |
| /* fprintf(stderr, "Speech_Encode_Frame_init: invalid parameter\n"); */ |
| return -1; |
| } |
| *state_data = NULL; |
| |
| /* allocate memory */ |
| if ((s = (Speech_Encode_FrameState *) malloc(sizeof(Speech_Encode_FrameState))) == NULL) |
| { |
| /* fprintf(stderr, "Speech_Encode_Frame_init: can not malloc state " |
| "structure\n"); */ |
| return -1; |
| } |
| |
| s->pre_state = NULL; |
| s->cod_amr_state = NULL; |
| s->dtx = dtx; |
| |
| if (Pre_Process_init(&s->pre_state) || |
| cod_amr_init(&s->cod_amr_state, s->dtx)) |
| { |
| Speech_Encode_FrameState** temp = &s; |
| GSMEncodeFrameExit((void**)temp); |
| return -1; |
| } |
| |
| Speech_Encode_Frame_reset(s); |
| *state_data = (void *)s; |
| |
| return 0; |
| } |
| |
| |
| /* |
| ------------------------------------------------------------------------------ |
| FUNCTION NAME: Speech_Encode_Frame_reset |
| ------------------------------------------------------------------------------ |
| INPUT AND OUTPUT DEFINITIONS |
| |
| Inputs: |
| state = pointer to structures of type Speech_Decode_FrameState |
| |
| Outputs: |
| None |
| |
| Returns: |
| return_value = set to zero if reset was successful; -1, otherwise (int) |
| |
| Global Variables Used: |
| None |
| |
| Local Variables Needed: |
| None |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| This function resets state memory |
| |
| ------------------------------------------------------------------------------ |
| REQUIREMENTS |
| |
| None. |
| |
| ------------------------------------------------------------------------------ |
| REFERENCES |
| |
| sp_enc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| |
| int Speech_Encode_Frame_reset (void *state_data) |
| { |
| |
| Speech_Encode_FrameState *state = |
| (Speech_Encode_FrameState *) state_data; |
| |
| if (state_data == NULL){ |
| fprintf(stderr, "Speech_Encode_Frame_reset |
| : invalid parameter\n"); |
| return -1; |
| } |
| |
| Pre_Process_reset(state->pre_state); |
| cod_amr_reset(state->cod_amr_state); |
| |
| setCounter(state->complexityCounter); |
| Init_WMOPS_counter(); |
| setCounter(0); // set counter to global counter |
| |
| return 0; |
| } |
| |
| ------------------------------------------------------------------------------ |
| RESOURCES USED [optional] |
| |
| When the code is written for a specific target processor the |
| the resources used should be documented below. |
| |
| HEAP MEMORY USED: x bytes |
| |
| STACK MEMORY USED: x bytes |
| |
| CLOCK CYCLES: (cycle count equation for this function) + (variable |
| used to represent cycle count for each subroutine |
| called) |
| where: (cycle count variable) = cycle count for [subroutine |
| name] |
| |
| ------------------------------------------------------------------------------ |
| CAUTION [optional] |
| [State any special notes, constraints or cautions for users of this function] |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| Word16 Speech_Encode_Frame_reset(void *state_data) |
| { |
| |
| Speech_Encode_FrameState *state = |
| (Speech_Encode_FrameState *) state_data; |
| |
| if (state_data == NULL) |
| { |
| /* fprintf(stderr, "Speech_Encode_Frame_reset |
| : invalid parameter\n"); */ |
| return -1; |
| } |
| |
| Pre_Process_reset(state->pre_state); |
| cod_amr_reset(state->cod_amr_state); |
| |
| return 0; |
| } |
| |
| /****************************************************************************/ |
| |
| /* |
| ------------------------------------------------------------------------------ |
| FUNCTION NAME: GSMEncodeFrameExit |
| ------------------------------------------------------------------------------ |
| INPUT AND OUTPUT DEFINITIONS |
| |
| Inputs: |
| state = pointer to a pointer to a structure of type cod_amrState |
| |
| Outputs: |
| state points to a NULL address |
| |
| Returns: |
| None. |
| |
| Global Variables Used: |
| None. |
| |
| Local Variables Needed: |
| None. |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| This function frees the memory used for state memory. |
| |
| ------------------------------------------------------------------------------ |
| REQUIREMENTS |
| |
| None. |
| |
| ------------------------------------------------------------------------------ |
| REFERENCES |
| |
| sp_enc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| |
| Note: Original function name of Speech_Encode_Frame_exit was changed to |
| GSMEncodeFrameExit in the Code section. |
| |
| void Speech_Encode_Frame_exit (void **state_data) |
| { |
| |
| Speech_Encode_FrameState **state = |
| (Speech_Encode_FrameState **) state_data; |
| |
| if (state == NULL || *state == NULL) |
| return; |
| |
| Pre_Process_exit(&(*state)->pre_state); |
| cod_amr_exit(&(*state)->cod_amr_state); |
| |
| setCounter((*state)->complexityCounter); |
| WMOPS_output(0); |
| setCounter(0); // set counter to global counter |
| |
| // deallocate memory |
| free(*state); |
| *state = NULL; |
| |
| return; |
| } |
| |
| ------------------------------------------------------------------------------ |
| RESOURCES USED [optional] |
| |
| When the code is written for a specific target processor the |
| the resources used should be documented below. |
| |
| HEAP MEMORY USED: x bytes |
| |
| STACK MEMORY USED: x bytes |
| |
| CLOCK CYCLES: (cycle count equation for this function) + (variable |
| used to represent cycle count for each subroutine |
| called) |
| where: (cycle count variable) = cycle count for [subroutine |
| name] |
| |
| ------------------------------------------------------------------------------ |
| CAUTION [optional] |
| [State any special notes, constraints or cautions for users of this function] |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| void GSMEncodeFrameExit(void **state_data) |
| { |
| |
| Speech_Encode_FrameState **state = |
| (Speech_Encode_FrameState **) state_data; |
| |
| if (state == NULL || *state == NULL) |
| return; |
| |
| Pre_Process_exit(&(*state)->pre_state); |
| cod_amr_exit(&(*state)->cod_amr_state); |
| |
| /* deallocate memory */ |
| free(*state); |
| *state = NULL; |
| |
| return; |
| } |
| |
| /****************************************************************************/ |
| |
| /* |
| ------------------------------------------------------------------------------ |
| FUNCTION NAME: Speech_Encode_Frame_First |
| ------------------------------------------------------------------------------ |
| |
| INPUT AND OUTPUT DEFINITIONS |
| |
| Inputs: |
| st = pointer to a structure of type Speech_Encode_FrameState that contains |
| the post filter states |
| new_speech = pointer to buffer of length L_FRAME that contains |
| the speech input (Word16) |
| |
| Outputs: |
| The structure of type Speech_Encode_FrameState pointed to by st is updated. |
| |
| Returns: |
| return_value = 0 (int) |
| |
| Global Variables Used: |
| None. |
| |
| Local Variables Needed: |
| None. |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| This function encodes the first frame of speech. It calls the pre-processing |
| filter and the first frame encoder. |
| |
| ------------------------------------------------------------------------------ |
| REQUIREMENTS |
| |
| None. |
| |
| ------------------------------------------------------------------------------ |
| REFERENCES |
| |
| sp_enc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| |
| int Speech_Encode_Frame_First ( |
| Speech_Encode_FrameState *st, // i/o : post filter states |
| Word16 *new_speech) // i : speech input |
| { |
| #if !defined(NO13BIT) |
| Word16 i; |
| #endif |
| |
| setCounter(st->complexityCounter); |
| |
| #if !defined(NO13BIT) |
| // Delete the 3 LSBs (13-bit input) |
| for (i = 0; i < L_NEXT; i++) |
| { |
| new_speech[i] = new_speech[i] & 0xfff8; |
| } |
| #endif |
| |
| // filter + downscaling |
| Pre_Process (st->pre_state, new_speech, L_NEXT); |
| |
| cod_amr_first(st->cod_amr_state, new_speech); |
| |
| Init_WMOPS_counter (); // reset WMOPS counter for the new frame |
| |
| return 0; |
| } |
| |
| |
| ------------------------------------------------------------------------------ |
| RESOURCES USED [optional] |
| |
| When the code is written for a specific target processor the |
| the resources used should be documented below. |
| |
| HEAP MEMORY USED: x bytes |
| |
| STACK MEMORY USED: x bytes |
| |
| CLOCK CYCLES: (cycle count equation for this function) + (variable |
| used to represent cycle count for each subroutine |
| called) |
| where: (cycle count variable) = cycle count for [subroutine |
| name] |
| |
| ------------------------------------------------------------------------------ |
| CAUTION [optional] |
| [State any special notes, constraints or cautions for users of this function] |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| void Speech_Encode_Frame_First( |
| Speech_Encode_FrameState *st, /* i/o : post filter states */ |
| Word16 *new_speech) /* i : speech input */ |
| { |
| #if !defined(NO13BIT) |
| Word16 i; |
| #endif |
| |
| #if !defined(NO13BIT) |
| /* Delete the 3 LSBs (13-bit input) */ |
| for (i = 0; i < L_NEXT; i++) |
| { |
| new_speech[i] = new_speech[i] & 0xfff8; |
| } |
| #endif |
| |
| /* filter + downscaling */ |
| Pre_Process(st->pre_state, new_speech, L_NEXT); |
| |
| cod_amr_first(st->cod_amr_state, new_speech); |
| |
| return; |
| } |
| |
| /* |
| ------------------------------------------------------------------------------ |
| FUNCTION NAME: cod_amr |
| ------------------------------------------------------------------------------ |
| INPUT AND OUTPUT DEFINITIONS |
| |
| Inputs: |
| state_data = a void pointer to the post filter states |
| mode = AMR mode of type enum Mode |
| new_speech = pointer to buffer of length L_FRAME that contains |
| the speech input of type Word16 |
| serial = pointer to the serial bit stream of type Word16 |
| usedMode = pointer to the used mode of type enum Mode |
| |
| Outputs: |
| serial -> encoded serial bit stream |
| The value pointed to by usedMode is updated. |
| |
| Returns: |
| return_value = 0 (int) |
| |
| Global Variables Used: |
| None. |
| |
| Local Variables Needed: |
| None. |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| This function is the entry point to the GSM AMR encoder. The following |
| operations are performed to generate one encoded frame: First, the incoming |
| audio samples are passed through the pre-processing filter where they are |
| filtered and downscaled. A call is then made to the main encoder cod_amr(). |
| This generates the set of encoded parameters which include the LSP, adaptive |
| codebook, and fixed codebook quantization indices (addresses and gains). The |
| generated parameters are then converted to serial bits. |
| |
| ------------------------------------------------------------------------------ |
| REQUIREMENTS |
| |
| None. |
| |
| ------------------------------------------------------------------------------ |
| REFERENCES |
| |
| sp_enc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| Note: Original function name of Speech_Encode_Frame was changed to |
| GSMEncodeFrame in the Code section. |
| |
| int Speech_Encode_Frame ( |
| void *state_data, // i/o : post filter states |
| enum Mode mode, // i : speech coder mode |
| Word16 *new_speech, // i : speech input |
| Word16 *serial, // o : serial bit stream |
| enum Mode *usedMode // o : used speech coder mode |
| ) |
| { |
| |
| Speech_Encode_FrameState *st = |
| (Speech_Encode_FrameState *) state_data; |
| |
| Word16 prm[MAX_PRM_SIZE]; // Analysis parameters |
| Word16 syn[L_FRAME]; // Buffer for synthesis speech |
| Word16 i; |
| |
| setCounter(st->complexityCounter); |
| Reset_WMOPS_counter (); // reset WMOPS counter for the new frame |
| // initialize the serial output frame to zero |
| for (i = 0; i < MAX_SERIAL_SIZE; i++) |
| { |
| serial[i] = 0; |
| } |
| #if !defined(NO13BIT) |
| // Delete the 3 LSBs (13-bit input) |
| for (i = 0; i < L_FRAME; i++) |
| { |
| new_speech[i] = new_speech[i] & 0xfff8; |
| |
| |
| } |
| #endif |
| |
| // filter + downscaling |
| Pre_Process (st->pre_state, new_speech, L_FRAME); |
| |
| // Call the speech encoder |
| cod_amr(st->cod_amr_state, mode, new_speech, prm, usedMode, syn); |
| |
| // Parameters to serial bits |
| Prm2bits (*usedMode, prm, &serial[0]); |
| |
| fwc(); |
| setCounter(0); // set counter to global counter |
| |
| return 0; |
| } |
| |
| ------------------------------------------------------------------------------ |
| RESOURCES USED [optional] |
| |
| When the code is written for a specific target processor the |
| the resources used should be documented below. |
| |
| HEAP MEMORY USED: x bytes |
| |
| STACK MEMORY USED: x bytes |
| |
| CLOCK CYCLES: (cycle count equation for this function) + (variable |
| used to represent cycle count for each subroutine |
| called) |
| where: (cycle count variable) = cycle count for [subroutine |
| name] |
| |
| ------------------------------------------------------------------------------ |
| CAUTION [optional] |
| [State any special notes, constraints or cautions for users of this function] |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| void GSMEncodeFrame( |
| void *state_data, /* i/o : post filter states */ |
| enum Mode mode, /* i : speech coder mode */ |
| Word16 *new_speech, /* i : speech input */ |
| Word16 *serial, /* o : serial bit stream */ |
| enum Mode *usedMode /* o : used speech coder mode */ |
| ) |
| { |
| |
| Speech_Encode_FrameState *st = |
| (Speech_Encode_FrameState *) state_data; |
| |
| Word16 prm[MAX_PRM_SIZE]; /* Analysis parameters. */ |
| Word16 syn[L_FRAME]; /* Buffer for synthesis speech */ |
| Word16 i; |
| |
| /* initialize the serial output frame to zero */ |
| for (i = 0; i < MAX_SERIAL_SIZE; i++) |
| { |
| serial[i] = 0; |
| } |
| #if !defined(NO13BIT) |
| /* Delete the 3 LSBs (13-bit input) */ |
| for (i = 0; i < L_FRAME; i++) |
| { |
| new_speech[i] = new_speech[i] & 0xfff8; |
| } |
| #endif |
| |
| /* filter + downscaling */ |
| Pre_Process(st->pre_state, new_speech, L_FRAME); |
| |
| /* Call the speech encoder */ |
| cod_amr(st->cod_amr_state, mode, new_speech, prm, usedMode, syn); |
| |
| /* Parameters to serial bits */ |
| Prm2bits(*usedMode, prm, &serial[0]); |
| |
| return; |
| } |