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#include <swresample_internal.h>
Data Fields | |
const AVClass * | av_class |
AVClass used for AVOption and av_log() | |
int | log_level_offset |
logging level offset | |
void * | log_ctx |
parent logging context | |
enum AVSampleFormat | in_sample_fmt |
input sample format | |
enum AVSampleFormat | int_sample_fmt |
internal sample format (AV_SAMPLE_FMT_FLTP or AV_SAMPLE_FMT_S16P) | |
enum AVSampleFormat | out_sample_fmt |
output sample format | |
int64_t | in_ch_layout |
input channel layout | |
int64_t | out_ch_layout |
output channel layout | |
int | in_sample_rate |
input sample rate | |
int | out_sample_rate |
output sample rate | |
int | flags |
miscellaneous flags such as SWR_FLAG_RESAMPLE | |
float | slev |
surround mixing level | |
float | clev |
center mixing level | |
float | lfe_mix_level |
LFE mixing level. | |
float | rematrix_volume |
rematrixing volume coefficient | |
enum AVMatrixEncoding | matrix_encoding |
matrixed stereo encoding | |
const int * | channel_map |
channel index (or -1 if muted channel) map | |
int | used_ch_count |
number of used input channels (mapped channel count if channel_map, otherwise in.ch_count) | |
enum SwrEngine | engine |
struct DitherContext | dither |
int | filter_size |
length of each FIR filter in the resampling filterbank relative to the cutoff frequency | |
int | phase_shift |
log2 of the number of entries in the resampling polyphase filterbank | |
int | linear_interp |
if 1 then the resampling FIR filter will be linearly interpolated | |
double | cutoff |
resampling cutoff frequency (swr: 6dB point; soxr: 0dB point). | |
enum SwrFilterType | filter_type |
swr resampling filter type | |
int | kaiser_beta |
swr beta value for Kaiser window (only applicable if filter_type == AV_FILTER_TYPE_KAISER) | |
double | precision |
soxr resampling precision (in bits) | |
int | cheby |
soxr: if 1 then passband rolloff will be none (Chebyshev) & irrational ratio approximation precision will be higher | |
float | min_compensation |
swr minimum below which no compensation will happen | |
float | min_hard_compensation |
swr minimum below which no silence inject / sample drop will happen | |
float | soft_compensation_duration |
swr duration over which soft compensation is applied | |
float | max_soft_compensation |
swr maximum soft compensation in seconds over soft_compensation_duration | |
float | async |
swr simple 1 parameter async, similar to ffmpegs -async | |
int64_t | firstpts_in_samples |
swr first pts in samples | |
int | resample_first |
1 if resampling must come first, 0 if rematrixing | |
int | rematrix |
flag to indicate if rematrixing is needed (basically if input and output layouts mismatch) | |
int | rematrix_custom |
flag to indicate that a custom matrix has been defined | |
AudioData | in |
input audio data | |
AudioData | postin |
post-input audio data: used for rematrix/resample | |
AudioData | midbuf |
intermediate audio data (postin/preout) | |
AudioData | preout |
pre-output audio data: used for rematrix/resample | |
AudioData | out |
converted output audio data | |
AudioData | in_buffer |
cached audio data (convert and resample purpose) | |
AudioData | silence |
temporary with silence | |
AudioData | drop_temp |
temporary used to discard output | |
int | in_buffer_index |
cached buffer position | |
int | in_buffer_count |
cached buffer length | |
int | resample_in_constraint |
1 if the input end was reach before the output end, 0 otherwise | |
int | flushed |
1 if data is to be flushed and no further input is expected | |
int64_t | outpts |
output PTS | |
int64_t | firstpts |
first PTS | |
int | drop_output |
number of output samples to drop | |
struct AudioConvert * | in_convert |
input conversion context | |
struct AudioConvert * | out_convert |
output conversion context | |
struct AudioConvert * | full_convert |
full conversion context (single conversion for input and output) | |
struct ResampleContext * | resample |
resampling context | |
struct Resampler const * | resampler |
resampler virtual function table | |
float | matrix [SWR_CH_MAX][SWR_CH_MAX] |
floating point rematrixing coefficients | |
uint8_t * | native_matrix |
uint8_t * | native_one |
uint8_t * | native_simd_one |
uint8_t * | native_simd_matrix |
int32_t | matrix32 [SWR_CH_MAX][SWR_CH_MAX] |
17.15 fixed point rematrixing coefficients | |
uint8_t | matrix_ch [SWR_CH_MAX][SWR_CH_MAX+1] |
Lists of input channels per output channel that have non zero rematrixing coefficients. | |
mix_1_1_func_type * | mix_1_1_f |
mix_1_1_func_type * | mix_1_1_simd |
mix_2_1_func_type * | mix_2_1_f |
mix_2_1_func_type * | mix_2_1_simd |
mix_any_func_type * | mix_any_f |
Definition at line 69 of file swresample_internal.h.
const AVClass* SwrContext::av_class |
AVClass used for AVOption and av_log()
Definition at line 70 of file swresample_internal.h.
Referenced by swr_alloc().
int SwrContext::log_level_offset |
logging level offset
Definition at line 71 of file swresample_internal.h.
Referenced by swr_alloc_set_opts().
void* SwrContext::log_ctx |
parent logging context
Definition at line 72 of file swresample_internal.h.
Referenced by swr_alloc_set_opts().
enum AVSampleFormat SwrContext::in_sample_fmt |
input sample format
Definition at line 73 of file swresample_internal.h.
Referenced by main(), and swr_init().
enum AVSampleFormat SwrContext::int_sample_fmt |
internal sample format (AV_SAMPLE_FMT_FLTP or AV_SAMPLE_FMT_S16P)
Definition at line 74 of file swresample_internal.h.
Referenced by auto_matrix(), swr_convert_internal(), swr_init(), and swri_rematrix().
enum AVSampleFormat SwrContext::out_sample_fmt |
output sample format
Definition at line 75 of file swresample_internal.h.
Referenced by auto_matrix(), swr_convert_internal(), and swr_init().
int64_t SwrContext::in_ch_layout |
input channel layout
Definition at line 76 of file swresample_internal.h.
Referenced by auto_matrix(), swr_init(), swr_set_matrix(), and swri_rematrix_init().
int64_t SwrContext::out_ch_layout |
output channel layout
Definition at line 77 of file swresample_internal.h.
Referenced by auto_matrix(), swr_alloc_set_opts(), swr_init(), swr_set_matrix(), swri_rematrix(), and swri_rematrix_init().
int SwrContext::in_sample_rate |
input sample rate
Definition at line 78 of file swresample_internal.h.
Referenced by get_delay(), swr_convert(), swr_get_delay(), swr_init(), and swr_next_pts().
int SwrContext::out_sample_rate |
output sample rate
Definition at line 79 of file swresample_internal.h.
Referenced by get_delay(), swr_init(), swr_next_pts(), and swri_dither_init().
int SwrContext::flags |
miscellaneous flags such as SWR_FLAG_RESAMPLE
Definition at line 80 of file swresample_internal.h.
Referenced by swr_init(), and swr_set_compensation().
float SwrContext::slev |
surround mixing level
Definition at line 81 of file swresample_internal.h.
Referenced by auto_matrix().
float SwrContext::clev |
center mixing level
Definition at line 82 of file swresample_internal.h.
Referenced by auto_matrix().
float SwrContext::lfe_mix_level |
float SwrContext::rematrix_volume |
rematrixing volume coefficient
Definition at line 84 of file swresample_internal.h.
Referenced by auto_matrix(), and swr_init().
enum AVMatrixEncoding SwrContext::matrix_encoding |
matrixed stereo encoding
Definition at line 85 of file swresample_internal.h.
Referenced by auto_matrix().
const int* SwrContext::channel_map |
channel index (or -1 if muted channel) map
Definition at line 86 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_init(), and swr_set_channel_mapping().
int SwrContext::used_ch_count |
number of used input channels (mapped channel count if channel_map, otherwise in.ch_count)
Definition at line 87 of file swresample_internal.h.
Referenced by swr_convert_internal(), and swr_init().
enum SwrEngine SwrContext::engine |
Definition at line 88 of file swresample_internal.h.
Referenced by swr_init().
struct DitherContext SwrContext::dither |
Definition at line 90 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), swr_init(), swri_dither_init(), and swri_get_dither().
int SwrContext::filter_size |
length of each FIR filter in the resampling filterbank relative to the cutoff frequency
Definition at line 92 of file swresample_internal.h.
Referenced by swr_init().
int SwrContext::phase_shift |
log2 of the number of entries in the resampling polyphase filterbank
Definition at line 93 of file swresample_internal.h.
Referenced by swr_init().
int SwrContext::linear_interp |
if 1 then the resampling FIR filter will be linearly interpolated
Definition at line 94 of file swresample_internal.h.
Referenced by swr_init().
double SwrContext::cutoff |
resampling cutoff frequency (swr: 6dB point; soxr: 0dB point).
1.0 corresponds to half the output sample rate
Definition at line 95 of file swresample_internal.h.
Referenced by swr_init().
enum SwrFilterType SwrContext::filter_type |
swr resampling filter type
Definition at line 96 of file swresample_internal.h.
Referenced by swr_init().
int SwrContext::kaiser_beta |
swr beta value for Kaiser window (only applicable if filter_type == AV_FILTER_TYPE_KAISER)
Definition at line 97 of file swresample_internal.h.
Referenced by swr_init().
double SwrContext::precision |
soxr resampling precision (in bits)
Definition at line 98 of file swresample_internal.h.
Referenced by swr_init().
int SwrContext::cheby |
soxr: if 1 then passband rolloff will be none (Chebyshev) & irrational ratio approximation precision will be higher
Definition at line 99 of file swresample_internal.h.
Referenced by swr_init().
float SwrContext::min_compensation |
swr minimum below which no compensation will happen
Definition at line 101 of file swresample_internal.h.
Referenced by swr_init(), and swr_next_pts().
float SwrContext::min_hard_compensation |
swr minimum below which no silence inject / sample drop will happen
Definition at line 102 of file swresample_internal.h.
Referenced by swr_next_pts().
float SwrContext::soft_compensation_duration |
swr duration over which soft compensation is applied
Definition at line 103 of file swresample_internal.h.
Referenced by swr_next_pts().
float SwrContext::max_soft_compensation |
swr maximum soft compensation in seconds over soft_compensation_duration
Definition at line 104 of file swresample_internal.h.
Referenced by swr_init(), and swr_next_pts().
float SwrContext::async |
swr simple 1 parameter async, similar to ffmpegs -async
Definition at line 105 of file swresample_internal.h.
Referenced by swr_init().
int64_t SwrContext::firstpts_in_samples |
swr first pts in samples
Definition at line 106 of file swresample_internal.h.
Referenced by swr_init().
int SwrContext::resample_first |
1 if resampling must come first, 0 if rematrixing
Definition at line 108 of file swresample_internal.h.
Referenced by swr_convert_internal(), and swr_init().
int SwrContext::rematrix |
flag to indicate if rematrixing is needed (basically if input and output layouts mismatch)
Definition at line 109 of file swresample_internal.h.
Referenced by swr_convert_internal(), and swr_init().
int SwrContext::rematrix_custom |
flag to indicate that a custom matrix has been defined
Definition at line 110 of file swresample_internal.h.
Referenced by swr_init(), swr_set_matrix(), and swri_rematrix_init().
AudioData SwrContext::in |
input audio data
Definition at line 112 of file swresample_internal.h.
Referenced by swr_convert(), swr_convert_internal(), and swr_init().
AudioData SwrContext::postin |
post-input audio data: used for rematrix/resample
Definition at line 113 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), and swr_init().
AudioData SwrContext::midbuf |
intermediate audio data (postin/preout)
Definition at line 114 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), swr_init(), and swri_rematrix_init().
AudioData SwrContext::preout |
pre-output audio data: used for rematrix/resample
Definition at line 115 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), swr_init(), and swri_dither_init().
AudioData SwrContext::out |
converted output audio data
Definition at line 116 of file swresample_internal.h.
Referenced by swr_convert(), swr_convert_internal(), and swr_init().
AudioData SwrContext::in_buffer |
cached audio data (convert and resample purpose)
Definition at line 117 of file swresample_internal.h.
Referenced by resample(), resample_flush(), swr_convert(), swr_free(), and swr_init().
AudioData SwrContext::silence |
temporary with silence
Definition at line 118 of file swresample_internal.h.
Referenced by swr_free(), swr_init(), and swr_inject_silence().
AudioData SwrContext::drop_temp |
temporary used to discard output
Definition at line 119 of file swresample_internal.h.
Referenced by swr_convert(), swr_free(), and swr_init().
int SwrContext::in_buffer_index |
cached buffer position
Definition at line 120 of file swresample_internal.h.
Referenced by resample(), resample_flush(), swr_convert(), and swr_init().
int SwrContext::in_buffer_count |
cached buffer length
Definition at line 121 of file swresample_internal.h.
Referenced by get_delay(), resample(), resample_flush(), swr_convert(), swr_get_delay(), and swr_init().
int SwrContext::resample_in_constraint |
1 if the input end was reach before the output end, 0 otherwise
Definition at line 122 of file swresample_internal.h.
Referenced by resample(), swr_convert(), and swr_init().
int SwrContext::flushed |
1 if data is to be flushed and no further input is expected
Definition at line 123 of file swresample_internal.h.
Referenced by resample(), swr_convert(), and swr_init().
int64_t SwrContext::outpts |
output PTS
Definition at line 124 of file swresample_internal.h.
Referenced by filter_frame(), swr_convert(), swr_init(), and swr_next_pts().
int64_t SwrContext::firstpts |
first PTS
Definition at line 125 of file swresample_internal.h.
Referenced by swr_init(), and swr_next_pts().
int SwrContext::drop_output |
number of output samples to drop
Definition at line 126 of file swresample_internal.h.
Referenced by swr_convert(), swr_drop_output(), and swr_next_pts().
struct AudioConvert* SwrContext::in_convert |
input conversion context
Definition at line 128 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), swr_init(), swr_set_channel_mapping(), and swr_set_matrix().
struct AudioConvert* SwrContext::out_convert |
output conversion context
Definition at line 129 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), and swr_init().
struct AudioConvert* SwrContext::full_convert |
full conversion context (single conversion for input and output)
Definition at line 130 of file swresample_internal.h.
Referenced by swr_convert_internal(), swr_free(), and swr_init().
struct ResampleContext* SwrContext::resample |
resampling context
Definition at line 131 of file swresample_internal.h.
Referenced by flush(), get_delay(), resample(), swr_convert(), swr_convert_internal(), swr_free(), swr_get_delay(), swr_init(), and swr_set_compensation().
struct Resampler const* SwrContext::resampler |
resampler virtual function table
Definition at line 132 of file swresample_internal.h.
Referenced by resample(), swr_convert(), swr_free(), swr_get_delay(), swr_init(), and swr_set_compensation().
float SwrContext::matrix[SWR_CH_MAX][SWR_CH_MAX] |
floating point rematrixing coefficients
Definition at line 134 of file swresample_internal.h.
Referenced by auto_matrix(), swr_set_matrix(), swri_rematrix(), and swri_rematrix_init().
uint8_t* SwrContext::native_matrix |
Definition at line 135 of file swresample_internal.h.
Referenced by swri_rematrix(), swri_rematrix_free(), and swri_rematrix_init().
uint8_t* SwrContext::native_one |
Definition at line 136 of file swresample_internal.h.
Referenced by swr_convert_internal(), swri_rematrix_free(), and swri_rematrix_init().
uint8_t* SwrContext::native_simd_one |
Definition at line 137 of file swresample_internal.h.
Referenced by swr_convert_internal(), and swri_rematrix_free().
uint8_t* SwrContext::native_simd_matrix |
Definition at line 138 of file swresample_internal.h.
Referenced by swri_rematrix(), and swri_rematrix_free().
int32_t SwrContext::matrix32[SWR_CH_MAX][SWR_CH_MAX] |
17.15 fixed point rematrixing coefficients
Definition at line 139 of file swresample_internal.h.
Referenced by swri_rematrix(), and swri_rematrix_init().
uint8_t SwrContext::matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1] |
Lists of input channels per output channel that have non zero rematrixing coefficients.
Definition at line 140 of file swresample_internal.h.
Referenced by swri_rematrix(), and swri_rematrix_init().
mix_1_1_func_type* SwrContext::mix_1_1_f |
Definition at line 141 of file swresample_internal.h.
Referenced by swri_rematrix(), and swri_rematrix_init().
mix_1_1_func_type* SwrContext::mix_1_1_simd |
Definition at line 142 of file swresample_internal.h.
Referenced by swri_rematrix().
mix_2_1_func_type* SwrContext::mix_2_1_f |
Definition at line 144 of file swresample_internal.h.
Referenced by swr_convert_internal(), swri_rematrix(), and swri_rematrix_init().
mix_2_1_func_type* SwrContext::mix_2_1_simd |
Definition at line 145 of file swresample_internal.h.
Referenced by swr_convert_internal(), and swri_rematrix().
mix_any_func_type* SwrContext::mix_any_f |
Definition at line 147 of file swresample_internal.h.
Referenced by swri_rematrix(), and swri_rematrix_init().