diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/bits.c')
-rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/bits.c | 420 |
1 files changed, 210 insertions, 210 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/bits.c b/media/libstagefright/codecs/amrwbenc/src/bits.c index 90d1a00..61cac3d 100644 --- a/media/libstagefright/codecs/amrwbenc/src/bits.c +++ b/media/libstagefright/codecs/amrwbenc/src/bits.c @@ -1,210 +1,210 @@ -/*
- ** Copyright 2003-2010, VisualOn, Inc.
- **
- ** 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.
- */
-
-/***********************************************************************
- File: bits.c
-
- Description: Performs bit stream manipulation
-
-************************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include "typedef.h"
-#include "basic_op.h"
-#include "cnst.h"
-#include "bits.h"
-#include "acelp.h"
-#include "dtx.h"
-#include "mime_io.tab"
-
-
-int PackBits(Word16 prms[], /* i: analysis parameters */
- Word16 coding_mode, /* i: coding bit-stream ratio mode */
- Word16 mode, /* i: coding bit-stream ratio mode*/
- Coder_State *st /*i/o: coder global parameters struct */
- )
-{
- Word16 i, frame_type;
- UWord8 temp;
- UWord8 *stream_ptr;
- Word16 bitstreamformat = st->frameType;
-
- unsigned short* dataOut = st->outputStream;
-
- if (coding_mode == MRDTX)
- {
- st->sid_update_counter--;
-
- if (st->prev_ft == TX_SPEECH)
- {
- frame_type = TX_SID_FIRST;
- st->sid_update_counter = 3;
- } else
- {
- if ((st->sid_handover_debt > 0) && (st->sid_update_counter > 2))
- {
- /* ensure extra updates are properly delayed after a possible SID_FIRST */
- frame_type = TX_SID_UPDATE;
- st->sid_handover_debt--;
- } else
- {
- if (st->sid_update_counter == 0)
- {
- frame_type = TX_SID_UPDATE;
- st->sid_update_counter = 8;
- } else
- {
- frame_type = TX_NO_DATA;
- }
- }
- }
- } else
- {
- st->sid_update_counter = 8;
- frame_type = TX_SPEECH;
- }
- st->prev_ft = frame_type;
-
- if(bitstreamformat == 0) /* default file format */
- {
- *(dataOut) = TX_FRAME_TYPE;
- *(dataOut + 1) = frame_type;
- *(dataOut + 2) = mode;
- for (i = 0; i < nb_of_bits[coding_mode]; i++)
- {
- *(dataOut + 3 + i) = prms[i];
- }
- return (3 + nb_of_bits[coding_mode])<<1;
- } else
- {
- if (bitstreamformat == 1) /* ITU file format */
- {
- *(dataOut) = 0x6b21;
- if(frame_type != TX_NO_DATA && frame_type != TX_SID_FIRST)
- {
- *(dataOut + 1) = nb_of_bits[coding_mode];
- for (i = 0; i < nb_of_bits[coding_mode]; i++)
- {
- if(prms[i] == BIT_0){
- *(dataOut + 2 + i) = BIT_0_ITU;
- }
- else{
- *(dataOut + 2 + i) = BIT_1_ITU;
- }
- }
- return (2 + nb_of_bits[coding_mode])<<1;
- } else
- {
- *(dataOut + 1) = 0;
- return 2<<1;
- }
- } else /* MIME/storage file format */
- {
-#define MRSID 9
- /* change mode index in case of SID frame */
- if (coding_mode == MRDTX)
- {
- coding_mode = MRSID;
- if (frame_type == TX_SID_FIRST)
- {
- for (i = 0; i < NBBITS_SID; i++) prms[i] = BIT_0;
- }
- }
- /* -> force NO_DATA frame */
- if (coding_mode < 0 || coding_mode > 15 || (coding_mode > MRSID && coding_mode < 14))
- {
- coding_mode = 15;
- }
- /* mark empty frames between SID updates as NO_DATA frames */
- if (coding_mode == MRSID && frame_type == TX_NO_DATA)
- {
- coding_mode = 15;
- }
- /* set pointer for packed frame, note that we handle data as bytes */
- stream_ptr = (UWord8*)dataOut;
- /* insert table of contents (ToC) byte at the beginning of the packet */
- *stream_ptr = toc_byte[coding_mode];
- stream_ptr++;
- temp = 0;
- /* sort and pack AMR-WB speech or SID bits */
- for (i = 1; i < unpacked_size[coding_mode] + 1; i++)
- {
- if (prms[sort_ptr[coding_mode][i-1]] == BIT_1)
- {
- temp++;
- }
- if (i&0x7)
- {
- temp <<= 1;
- }
- else
- {
- *stream_ptr = temp;
- stream_ptr++;
- temp = 0;
- }
- }
- /* insert SID type indication and speech mode in case of SID frame */
- if (coding_mode == MRSID)
- {
- if (frame_type == TX_SID_UPDATE)
- {
- temp++;
- }
- temp <<= 4;
- temp += mode & 0x000F;
- }
- /* insert unused bits (zeros) at the tail of the last byte */
- if (unused_size[coding_mode])
- {
- temp <<= (unused_size[coding_mode] - 1);
- }
- *stream_ptr = temp;
- /* write packed frame into file (1 byte added to cover ToC entry) */
- return (1 + packed_size[coding_mode]);
- }
- }
-}
-
-/*-----------------------------------------------------*
-* Parm_serial -> convert parameters to serial stream *
-*-----------------------------------------------------*/
-
-void Parm_serial(
- Word16 value, /* input : parameter value */
- Word16 no_of_bits, /* input : number of bits */
- Word16 ** prms
- )
-{
- Word16 i, bit;
- *prms += no_of_bits;
- for (i = 0; i < no_of_bits; i++)
- {
- bit = (Word16) (value & 0x0001); /* get lsb */
- if (bit == 0)
- *--(*prms) = BIT_0;
- else
- *--(*prms) = BIT_1;
- value >>= 1;
- }
- *prms += no_of_bits;
- return;
-}
-
-
-
-
+/* + ** Copyright 2003-2010, VisualOn, Inc. + ** + ** 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. + */ + +/*********************************************************************** + File: bits.c + + Description: Performs bit stream manipulation + +************************************************************************/ + +#include <stdlib.h> +#include <stdio.h> +#include "typedef.h" +#include "basic_op.h" +#include "cnst.h" +#include "bits.h" +#include "acelp.h" +#include "dtx.h" +#include "mime_io.tab" + + +int PackBits(Word16 prms[], /* i: analysis parameters */ + Word16 coding_mode, /* i: coding bit-stream ratio mode */ + Word16 mode, /* i: coding bit-stream ratio mode*/ + Coder_State *st /*i/o: coder global parameters struct */ + ) +{ + Word16 i, frame_type; + UWord8 temp; + UWord8 *stream_ptr; + Word16 bitstreamformat = st->frameType; + + unsigned short* dataOut = st->outputStream; + + if (coding_mode == MRDTX) + { + st->sid_update_counter--; + + if (st->prev_ft == TX_SPEECH) + { + frame_type = TX_SID_FIRST; + st->sid_update_counter = 3; + } else + { + if ((st->sid_handover_debt > 0) && (st->sid_update_counter > 2)) + { + /* ensure extra updates are properly delayed after a possible SID_FIRST */ + frame_type = TX_SID_UPDATE; + st->sid_handover_debt--; + } else + { + if (st->sid_update_counter == 0) + { + frame_type = TX_SID_UPDATE; + st->sid_update_counter = 8; + } else + { + frame_type = TX_NO_DATA; + } + } + } + } else + { + st->sid_update_counter = 8; + frame_type = TX_SPEECH; + } + st->prev_ft = frame_type; + + if(bitstreamformat == 0) /* default file format */ + { + *(dataOut) = TX_FRAME_TYPE; + *(dataOut + 1) = frame_type; + *(dataOut + 2) = mode; + for (i = 0; i < nb_of_bits[coding_mode]; i++) + { + *(dataOut + 3 + i) = prms[i]; + } + return (3 + nb_of_bits[coding_mode])<<1; + } else + { + if (bitstreamformat == 1) /* ITU file format */ + { + *(dataOut) = 0x6b21; + if(frame_type != TX_NO_DATA && frame_type != TX_SID_FIRST) + { + *(dataOut + 1) = nb_of_bits[coding_mode]; + for (i = 0; i < nb_of_bits[coding_mode]; i++) + { + if(prms[i] == BIT_0){ + *(dataOut + 2 + i) = BIT_0_ITU; + } + else{ + *(dataOut + 2 + i) = BIT_1_ITU; + } + } + return (2 + nb_of_bits[coding_mode])<<1; + } else + { + *(dataOut + 1) = 0; + return 2<<1; + } + } else /* MIME/storage file format */ + { +#define MRSID 9 + /* change mode index in case of SID frame */ + if (coding_mode == MRDTX) + { + coding_mode = MRSID; + if (frame_type == TX_SID_FIRST) + { + for (i = 0; i < NBBITS_SID; i++) prms[i] = BIT_0; + } + } + /* -> force NO_DATA frame */ + if (coding_mode < 0 || coding_mode > 15 || (coding_mode > MRSID && coding_mode < 14)) + { + coding_mode = 15; + } + /* mark empty frames between SID updates as NO_DATA frames */ + if (coding_mode == MRSID && frame_type == TX_NO_DATA) + { + coding_mode = 15; + } + /* set pointer for packed frame, note that we handle data as bytes */ + stream_ptr = (UWord8*)dataOut; + /* insert table of contents (ToC) byte at the beginning of the packet */ + *stream_ptr = toc_byte[coding_mode]; + stream_ptr++; + temp = 0; + /* sort and pack AMR-WB speech or SID bits */ + for (i = 1; i < unpacked_size[coding_mode] + 1; i++) + { + if (prms[sort_ptr[coding_mode][i-1]] == BIT_1) + { + temp++; + } + if (i&0x7) + { + temp <<= 1; + } + else + { + *stream_ptr = temp; + stream_ptr++; + temp = 0; + } + } + /* insert SID type indication and speech mode in case of SID frame */ + if (coding_mode == MRSID) + { + if (frame_type == TX_SID_UPDATE) + { + temp++; + } + temp <<= 4; + temp += mode & 0x000F; + } + /* insert unused bits (zeros) at the tail of the last byte */ + if (unused_size[coding_mode]) + { + temp <<= (unused_size[coding_mode] - 1); + } + *stream_ptr = temp; + /* write packed frame into file (1 byte added to cover ToC entry) */ + return (1 + packed_size[coding_mode]); + } + } +} + +/*-----------------------------------------------------* +* Parm_serial -> convert parameters to serial stream * +*-----------------------------------------------------*/ + +void Parm_serial( + Word16 value, /* input : parameter value */ + Word16 no_of_bits, /* input : number of bits */ + Word16 ** prms + ) +{ + Word16 i, bit; + *prms += no_of_bits; + for (i = 0; i < no_of_bits; i++) + { + bit = (Word16) (value & 0x0001); /* get lsb */ + if (bit == 0) + *--(*prms) = BIT_0; + else + *--(*prms) = BIT_1; + value >>= 1; + } + *prms += no_of_bits; + return; +} + + + + |