diff options
Diffstat (limited to 'drivers/opus/silk/shell_coder.c')
| -rw-r--r-- | drivers/opus/silk/shell_coder.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/drivers/opus/silk/shell_coder.c b/drivers/opus/silk/shell_coder.c deleted file mode 100644 index 67a5446927..0000000000 --- a/drivers/opus/silk/shell_coder.c +++ /dev/null @@ -1,148 +0,0 @@ -/*********************************************************************** -Copyright (c) 2006-2011, Skype Limited. All rights reserved. -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions -are met: -- Redistributions of source code must retain the above copyright notice, -this list of conditions and the following disclaimer. -- Redistributions in binary form must reproduce the above copyright -notice, this list of conditions and the following disclaimer in the -documentation and/or other materials provided with the distribution. -- Neither the name of Internet Society, IETF or IETF Trust, nor the -names of specific contributors, may be used to endorse or promote -products derived from this software without specific prior written -permission. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. -***********************************************************************/ -#include "opus/opus_config.h" - -#include "opus/silk/main.h" - -/* shell coder; pulse-subframe length is hardcoded */ - -static OPUS_INLINE void combine_pulses( - opus_int *out, /* O combined pulses vector [len] */ - const opus_int *in, /* I input vector [2 * len] */ - const opus_int len /* I number of OUTPUT samples */ -) -{ - opus_int k; - for( k = 0; k < len; k++ ) { - out[ k ] = in[ 2 * k ] + in[ 2 * k + 1 ]; - } -} - -static OPUS_INLINE void encode_split( - ec_enc *psRangeEnc, /* I/O compressor data structure */ - const opus_int p_child1, /* I pulse amplitude of first child subframe */ - const opus_int p, /* I pulse amplitude of current subframe */ - const opus_uint8 *shell_table /* I table of shell cdfs */ -) -{ - if( p > 0 ) { - ec_enc_icdf( psRangeEnc, p_child1, &shell_table[ silk_shell_code_table_offsets[ p ] ], 8 ); - } -} - -static OPUS_INLINE void decode_split( - opus_int16 *p_child1, /* O pulse amplitude of first child subframe */ - opus_int16 *p_child2, /* O pulse amplitude of second child subframe */ - ec_dec *psRangeDec, /* I/O Compressor data structure */ - const opus_int p, /* I pulse amplitude of current subframe */ - const opus_uint8 *shell_table /* I table of shell cdfs */ -) -{ - if( p > 0 ) { - p_child1[ 0 ] = ec_dec_icdf( psRangeDec, &shell_table[ silk_shell_code_table_offsets[ p ] ], 8 ); - p_child2[ 0 ] = p - p_child1[ 0 ]; - } else { - p_child1[ 0 ] = 0; - p_child2[ 0 ] = 0; - } -} - -/* Shell encoder, operates on one shell code frame of 16 pulses */ -void silk_shell_encoder( - ec_enc *psRangeEnc, /* I/O compressor data structure */ - const opus_int *pulses0 /* I data: nonnegative pulse amplitudes */ -) -{ - opus_int pulses1[ 8 ], pulses2[ 4 ], pulses3[ 2 ], pulses4[ 1 ]; - - /* this function operates on one shell code frame of 16 pulses */ - silk_assert( SHELL_CODEC_FRAME_LENGTH == 16 ); - - /* tree representation per pulse-subframe */ - combine_pulses( pulses1, pulses0, 8 ); - combine_pulses( pulses2, pulses1, 4 ); - combine_pulses( pulses3, pulses2, 2 ); - combine_pulses( pulses4, pulses3, 1 ); - - encode_split( psRangeEnc, pulses3[ 0 ], pulses4[ 0 ], silk_shell_code_table3 ); - - encode_split( psRangeEnc, pulses2[ 0 ], pulses3[ 0 ], silk_shell_code_table2 ); - - encode_split( psRangeEnc, pulses1[ 0 ], pulses2[ 0 ], silk_shell_code_table1 ); - encode_split( psRangeEnc, pulses0[ 0 ], pulses1[ 0 ], silk_shell_code_table0 ); - encode_split( psRangeEnc, pulses0[ 2 ], pulses1[ 1 ], silk_shell_code_table0 ); - - encode_split( psRangeEnc, pulses1[ 2 ], pulses2[ 1 ], silk_shell_code_table1 ); - encode_split( psRangeEnc, pulses0[ 4 ], pulses1[ 2 ], silk_shell_code_table0 ); - encode_split( psRangeEnc, pulses0[ 6 ], pulses1[ 3 ], silk_shell_code_table0 ); - - encode_split( psRangeEnc, pulses2[ 2 ], pulses3[ 1 ], silk_shell_code_table2 ); - - encode_split( psRangeEnc, pulses1[ 4 ], pulses2[ 2 ], silk_shell_code_table1 ); - encode_split( psRangeEnc, pulses0[ 8 ], pulses1[ 4 ], silk_shell_code_table0 ); - encode_split( psRangeEnc, pulses0[ 10 ], pulses1[ 5 ], silk_shell_code_table0 ); - - encode_split( psRangeEnc, pulses1[ 6 ], pulses2[ 3 ], silk_shell_code_table1 ); - encode_split( psRangeEnc, pulses0[ 12 ], pulses1[ 6 ], silk_shell_code_table0 ); - encode_split( psRangeEnc, pulses0[ 14 ], pulses1[ 7 ], silk_shell_code_table0 ); -} - - -/* Shell decoder, operates on one shell code frame of 16 pulses */ -void silk_shell_decoder( - opus_int16 *pulses0, /* O data: nonnegative pulse amplitudes */ - ec_dec *psRangeDec, /* I/O Compressor data structure */ - const opus_int pulses4 /* I number of pulses per pulse-subframe */ -) -{ - opus_int16 pulses3[ 2 ], pulses2[ 4 ], pulses1[ 8 ]; - - /* this function operates on one shell code frame of 16 pulses */ - silk_assert( SHELL_CODEC_FRAME_LENGTH == 16 ); - - decode_split( &pulses3[ 0 ], &pulses3[ 1 ], psRangeDec, pulses4, silk_shell_code_table3 ); - - decode_split( &pulses2[ 0 ], &pulses2[ 1 ], psRangeDec, pulses3[ 0 ], silk_shell_code_table2 ); - - decode_split( &pulses1[ 0 ], &pulses1[ 1 ], psRangeDec, pulses2[ 0 ], silk_shell_code_table1 ); - decode_split( &pulses0[ 0 ], &pulses0[ 1 ], psRangeDec, pulses1[ 0 ], silk_shell_code_table0 ); - decode_split( &pulses0[ 2 ], &pulses0[ 3 ], psRangeDec, pulses1[ 1 ], silk_shell_code_table0 ); - - decode_split( &pulses1[ 2 ], &pulses1[ 3 ], psRangeDec, pulses2[ 1 ], silk_shell_code_table1 ); - decode_split( &pulses0[ 4 ], &pulses0[ 5 ], psRangeDec, pulses1[ 2 ], silk_shell_code_table0 ); - decode_split( &pulses0[ 6 ], &pulses0[ 7 ], psRangeDec, pulses1[ 3 ], silk_shell_code_table0 ); - - decode_split( &pulses2[ 2 ], &pulses2[ 3 ], psRangeDec, pulses3[ 1 ], silk_shell_code_table2 ); - - decode_split( &pulses1[ 4 ], &pulses1[ 5 ], psRangeDec, pulses2[ 2 ], silk_shell_code_table1 ); - decode_split( &pulses0[ 8 ], &pulses0[ 9 ], psRangeDec, pulses1[ 4 ], silk_shell_code_table0 ); - decode_split( &pulses0[ 10 ], &pulses0[ 11 ], psRangeDec, pulses1[ 5 ], silk_shell_code_table0 ); - - decode_split( &pulses1[ 6 ], &pulses1[ 7 ], psRangeDec, pulses2[ 3 ], silk_shell_code_table1 ); - decode_split( &pulses0[ 12 ], &pulses0[ 13 ], psRangeDec, pulses1[ 6 ], silk_shell_code_table0 ); - decode_split( &pulses0[ 14 ], &pulses0[ 15 ], psRangeDec, pulses1[ 7 ], silk_shell_code_table0 ); -} |