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/*
* Copyright ( C ) 2011 - 2013 Michael Niedermayer ( michaelni @ gmx . at )
*
* This file is part of libswresample
*
* libswresample is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2.1 of the License , or ( at your option ) any later version .
*
* libswresample is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with libswresample ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA
*/
# include "libavutil/opt.h"
# include "swresample_internal.h"
# include <float.h>
# define C30DB M_SQRT2
# define C15DB 1.189207115
# define C__0DB 1.0
# define C_15DB 0.840896415
# define C_30DB M_SQRT1_2
# define C_45DB 0.594603558
# define C_60DB 0.5
# define OFFSET(x) offsetof(SwrContext,x)
# define PARAM AV_OPT_FLAG_AUDIO_PARAM
static const AVOption options [ ] = {
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{ " ich " , " set input channel count " , OFFSET ( user_in_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
{ " in_channel_count " , " set input channel count " , OFFSET ( user_in_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
{ " och " , " set output channel count " , OFFSET ( user_out_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
{ " out_channel_count " , " set output channel count " , OFFSET ( user_out_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
{ " uch " , " set used channel count " , OFFSET ( user_used_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
{ " used_channel_count " , " set used channel count " , OFFSET ( user_used_ch_count ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_CH_MAX , PARAM } ,
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{ " isr " , " set input sample rate " , OFFSET ( in_sample_rate ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , INT_MAX , PARAM } ,
{ " in_sample_rate " , " set input sample rate " , OFFSET ( in_sample_rate ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , INT_MAX , PARAM } ,
{ " osr " , " set output sample rate " , OFFSET ( out_sample_rate ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , INT_MAX , PARAM } ,
{ " out_sample_rate " , " set output sample rate " , OFFSET ( out_sample_rate ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , INT_MAX , PARAM } ,
{ " isf " , " set input sample format " , OFFSET ( in_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
{ " in_sample_fmt " , " set input sample format " , OFFSET ( in_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
{ " osf " , " set output sample format " , OFFSET ( out_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
{ " out_sample_fmt " , " set output sample format " , OFFSET ( out_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
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{ " tsf " , " set internal sample format " , OFFSET ( user_int_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
{ " internal_sample_fmt " , " set internal sample format " , OFFSET ( user_int_sample_fmt ) , AV_OPT_TYPE_SAMPLE_FMT , { . i64 = AV_SAMPLE_FMT_NONE } , - 1 , INT_MAX , PARAM } ,
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{ " icl " , " set input channel layout " , OFFSET ( user_in_ch_layout ) , AV_OPT_TYPE_CHANNEL_LAYOUT , { . i64 = 0 } , 0 , INT64_MAX , PARAM , " channel_layout " } ,
{ " in_channel_layout " , " set input channel layout " , OFFSET ( user_in_ch_layout ) , AV_OPT_TYPE_CHANNEL_LAYOUT , { . i64 = 0 } , 0 , INT64_MAX , PARAM , " channel_layout " } ,
{ " ocl " , " set output channel layout " , OFFSET ( user_out_ch_layout ) , AV_OPT_TYPE_CHANNEL_LAYOUT , { . i64 = 0 } , 0 , INT64_MAX , PARAM , " channel_layout " } ,
{ " out_channel_layout " , " set output channel layout " , OFFSET ( user_out_ch_layout ) , AV_OPT_TYPE_CHANNEL_LAYOUT , { . i64 = 0 } , 0 , INT64_MAX , PARAM , " channel_layout " } ,
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{ " clev " , " set center mix level " , OFFSET ( clev ) , AV_OPT_TYPE_FLOAT , { . dbl = C_30DB } , - 32 , 32 , PARAM } ,
{ " center_mix_level " , " set center mix level " , OFFSET ( clev ) , AV_OPT_TYPE_FLOAT , { . dbl = C_30DB } , - 32 , 32 , PARAM } ,
{ " slev " , " set surround mix level " , OFFSET ( slev ) , AV_OPT_TYPE_FLOAT , { . dbl = C_30DB } , - 32 , 32 , PARAM } ,
{ " surround_mix_level " , " set surround mix Level " , OFFSET ( slev ) , AV_OPT_TYPE_FLOAT , { . dbl = C_30DB } , - 32 , 32 , PARAM } ,
{ " lfe_mix_level " , " set LFE mix level " , OFFSET ( lfe_mix_level ) , AV_OPT_TYPE_FLOAT , { . dbl = 0 } , - 32 , 32 , PARAM } ,
{ " rmvol " , " set rematrix volume " , OFFSET ( rematrix_volume ) , AV_OPT_TYPE_FLOAT , { . dbl = 1.0 } , - 1000 , 1000 , PARAM } ,
{ " rematrix_volume " , " set rematrix volume " , OFFSET ( rematrix_volume ) , AV_OPT_TYPE_FLOAT , { . dbl = 1.0 } , - 1000 , 1000 , PARAM } ,
{ " rematrix_maxval " , " set rematrix maxval " , OFFSET ( rematrix_maxval ) , AV_OPT_TYPE_FLOAT , { . dbl = 0.0 } , 0 , 1000 , PARAM } ,
{ " flags " , " set flags " , OFFSET ( flags ) , AV_OPT_TYPE_FLAGS , { . i64 = 0 } , 0 , UINT_MAX , PARAM , " flags " } ,
{ " swr_flags " , " set flags " , OFFSET ( flags ) , AV_OPT_TYPE_FLAGS , { . i64 = 0 } , 0 , UINT_MAX , PARAM , " flags " } ,
{ " res " , " force resampling " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_FLAG_RESAMPLE } , INT_MIN , INT_MAX , PARAM , " flags " } ,
{ " dither_scale " , " set dither scale " , OFFSET ( dither . scale ) , AV_OPT_TYPE_FLOAT , { . dbl = 1 } , 0 , INT_MAX , PARAM } ,
{ " dither_method " , " set dither method " , OFFSET ( dither . method ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_DITHER_NB - 1 , PARAM , " dither_method " } ,
{ " rectangular " , " select rectangular dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_RECTANGULAR } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " triangular " , " select triangular dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_TRIANGULAR } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " triangular_hp " , " select triangular dither with high pass " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_TRIANGULAR_HIGHPASS } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " lipshitz " , " select lipshitz noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_LIPSHITZ } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " shibata " , " select shibata noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_SHIBATA } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " low_shibata " , " select low shibata noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_LOW_SHIBATA } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " high_shibata " , " select high shibata noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_HIGH_SHIBATA } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " f_weighted " , " select f-weighted noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_F_WEIGHTED } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " modified_e_weighted " , " select modified-e-weighted noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_MODIFIED_E_WEIGHTED } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " improved_e_weighted " , " select improved-e-weighted noise shaping dither " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_DITHER_NS_IMPROVED_E_WEIGHTED } , INT_MIN , INT_MAX , PARAM , " dither_method " } ,
{ " filter_size " , " set swr resampling filter size " , OFFSET ( filter_size ) , AV_OPT_TYPE_INT , { . i64 = 32 } , 0 , INT_MAX , PARAM } ,
{ " phase_shift " , " set swr resampling phase shift " , OFFSET ( phase_shift ) , AV_OPT_TYPE_INT , { . i64 = 10 } , 0 , 24 , PARAM } ,
{ " linear_interp " , " enable linear interpolation " , OFFSET ( linear_interp ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , 1 , PARAM } ,
{ " cutoff " , " set cutoff frequency ratio " , OFFSET ( cutoff ) , AV_OPT_TYPE_DOUBLE , { . dbl = 0. } , 0 , 1 , PARAM } ,
/* duplicate option in order to work with avconv */
{ " resample_cutoff " , " set cutoff frequency ratio " , OFFSET ( cutoff ) , AV_OPT_TYPE_DOUBLE , { . dbl = 0. } , 0 , 1 , PARAM } ,
{ " resampler " , " set resampling Engine " , OFFSET ( engine ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , SWR_ENGINE_NB - 1 , PARAM , " resampler " } ,
{ " swr " , " select SW Resampler " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_ENGINE_SWR } , INT_MIN , INT_MAX , PARAM , " resampler " } ,
{ " soxr " , " select SoX Resampler " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_ENGINE_SOXR } , INT_MIN , INT_MAX , PARAM , " resampler " } ,
{ " precision " , " set soxr resampling precision (in bits) "
, OFFSET ( precision ) , AV_OPT_TYPE_DOUBLE , { . dbl = 20.0 } , 15.0 , 33.0 , PARAM } ,
{ " cheby " , " enable soxr Chebyshev passband & higher-precision irrational ratio approximation "
, OFFSET ( cheby ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , 1 , PARAM } ,
{ " min_comp " , " set minimum difference between timestamps and audio data (in seconds) below which no timestamp compensation of either kind is applied "
, OFFSET ( min_compensation ) , AV_OPT_TYPE_FLOAT , { . dbl = FLT_MAX } , 0 , FLT_MAX , PARAM } ,
{ " min_hard_comp " , " set minimum difference between timestamps and audio data (in seconds) to trigger padding/trimming the data. "
, OFFSET ( min_hard_compensation ) , AV_OPT_TYPE_FLOAT , { . dbl = 0.1 } , 0 , INT_MAX , PARAM } ,
{ " comp_duration " , " set duration (in seconds) over which data is stretched/squeezed to make it match the timestamps. "
, OFFSET ( soft_compensation_duration ) , AV_OPT_TYPE_FLOAT , { . dbl = 1 } , 0 , INT_MAX , PARAM } ,
{ " max_soft_comp " , " set maximum factor by which data is stretched/squeezed to make it match the timestamps. "
, OFFSET ( max_soft_compensation ) , AV_OPT_TYPE_FLOAT , { . dbl = 0 } , INT_MIN , INT_MAX , PARAM } ,
{ " async " , " simplified 1 parameter audio timestamp matching, 0(disabled), 1(filling and trimming), >1(maximum stretch/squeeze in samples per second) "
, OFFSET ( async ) , AV_OPT_TYPE_FLOAT , { . dbl = 0 } , INT_MIN , INT_MAX , PARAM } ,
{ " first_pts " , " Assume the first pts should be this value (in samples). "
, OFFSET ( firstpts_in_samples ) , AV_OPT_TYPE_INT64 , { . i64 = AV_NOPTS_VALUE } , INT64_MIN , INT64_MAX , PARAM } ,
{ " matrix_encoding " , " set matrixed stereo encoding " , OFFSET ( matrix_encoding ) , AV_OPT_TYPE_INT , { . i64 = AV_MATRIX_ENCODING_NONE } , AV_MATRIX_ENCODING_NONE , AV_MATRIX_ENCODING_NB - 1 , PARAM , " matrix_encoding " } ,
{ " none " , " select none " , 0 , AV_OPT_TYPE_CONST , { . i64 = AV_MATRIX_ENCODING_NONE } , INT_MIN , INT_MAX , PARAM , " matrix_encoding " } ,
{ " dolby " , " select Dolby " , 0 , AV_OPT_TYPE_CONST , { . i64 = AV_MATRIX_ENCODING_DOLBY } , INT_MIN , INT_MAX , PARAM , " matrix_encoding " } ,
{ " dplii " , " select Dolby Pro Logic II " , 0 , AV_OPT_TYPE_CONST , { . i64 = AV_MATRIX_ENCODING_DPLII } , INT_MIN , INT_MAX , PARAM , " matrix_encoding " } ,
{ " filter_type " , " select swr filter type " , OFFSET ( filter_type ) , AV_OPT_TYPE_INT , { . i64 = SWR_FILTER_TYPE_KAISER } , SWR_FILTER_TYPE_CUBIC , SWR_FILTER_TYPE_KAISER , PARAM , " filter_type " } ,
{ " cubic " , " select cubic " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_FILTER_TYPE_CUBIC } , INT_MIN , INT_MAX , PARAM , " filter_type " } ,
{ " blackman_nuttall " , " select Blackman Nuttall Windowed Sinc " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_FILTER_TYPE_BLACKMAN_NUTTALL } , INT_MIN , INT_MAX , PARAM , " filter_type " } ,
{ " kaiser " , " select Kaiser Windowed Sinc " , 0 , AV_OPT_TYPE_CONST , { . i64 = SWR_FILTER_TYPE_KAISER } , INT_MIN , INT_MAX , PARAM , " filter_type " } ,
{ " kaiser_beta " , " set swr Kaiser Window Beta " , OFFSET ( kaiser_beta ) , AV_OPT_TYPE_INT , { . i64 = 9 } , 2 , 16 , PARAM } ,
{ " output_sample_bits " , " set swr number of output sample bits " , OFFSET ( dither . output_sample_bits ) , AV_OPT_TYPE_INT , { . i64 = 0 } , 0 , 64 , PARAM } ,
{ 0 }
} ;
static const char * context_to_name ( void * ptr ) {
return " SWR " ;
}
static const AVClass av_class = {
. class_name = " SWResampler " ,
. item_name = context_to_name ,
. option = options ,
. version = LIBAVUTIL_VERSION_INT ,
. log_level_offset_offset = OFFSET ( log_level_offset ) ,
. parent_log_context_offset = OFFSET ( log_ctx ) ,
. category = AV_CLASS_CATEGORY_SWRESAMPLER ,
} ;
const AVClass * swr_get_class ( void )
{
return & av_class ;
}
av_cold struct SwrContext * swr_alloc ( void ) {
SwrContext * s = av_mallocz ( sizeof ( SwrContext ) ) ;
if ( s ) {
s - > av_class = & av_class ;
av_opt_set_defaults ( s ) ;
}
return s ;
}
