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- #ifndef SWRESAMPLE_SWRESAMPLE_INTERNAL_H
- #define SWRESAMPLE_SWRESAMPLE_INTERNAL_H
- #include "swresample.h"
- #include "libavutil/channel_layout.h"
- #include "config.h"
- #define SWR_CH_MAX 64
- #define SQRT3_2 1.22474487139158904909
- #define NS_TAPS 20
- #if ARCH_X86_64
- typedef int64_t integer;
- #else
- typedef int integer;
- #endif
- typedef void (mix_1_1_func_type)(void *out, const void *in, void *coeffp, integer index, integer len);
- typedef void (mix_2_1_func_type)(void *out, const void *in1, const void *in2, void *coeffp, integer index1, integer index2, integer len);
- typedef void (mix_any_func_type)(uint8_t **out, const uint8_t **in1, void *coeffp, integer len);
- typedef struct AudioData{
- uint8_t *ch[SWR_CH_MAX];
- uint8_t *data;
- int ch_count;
- int bps;
- int count;
- int planar;
- enum AVSampleFormat fmt;
- } AudioData;
- struct DitherContext {
- int method;
- int noise_pos;
- float scale;
- float noise_scale;
- int ns_taps;
- float ns_scale;
- float ns_scale_1;
- int ns_pos;
- float ns_coeffs[NS_TAPS];
- float ns_errors[SWR_CH_MAX][2*NS_TAPS];
- AudioData noise;
- AudioData temp;
- int output_sample_bits;
- };
- typedef struct ResampleContext * (* resample_init_func)(struct ResampleContext *c, int out_rate, int in_rate, int filter_size, int phase_shift, int linear,
- double cutoff, enum AVSampleFormat format, enum SwrFilterType filter_type, double kaiser_beta, double precision, int cheby, int exact_rational);
- typedef void (* resample_free_func)(struct ResampleContext **c);
- typedef int (* multiple_resample_func)(struct ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed);
- typedef int (* resample_flush_func)(struct SwrContext *c);
- typedef int (* set_compensation_func)(struct ResampleContext *c, int sample_delta, int compensation_distance);
- typedef int64_t (* get_delay_func)(struct SwrContext *s, int64_t base);
- typedef int (* invert_initial_buffer_func)(struct ResampleContext *c, AudioData *dst, const AudioData *src, int src_size, int *dst_idx, int *dst_count);
- typedef int64_t (* get_out_samples_func)(struct SwrContext *s, int in_samples);
- struct Resampler {
- resample_init_func init;
- resample_free_func free;
- multiple_resample_func multiple_resample;
- resample_flush_func flush;
- set_compensation_func set_compensation;
- get_delay_func get_delay;
- invert_initial_buffer_func invert_initial_buffer;
- get_out_samples_func get_out_samples;
- };
- extern struct Resampler const swri_resampler;
- extern struct Resampler const swri_soxr_resampler;
- struct SwrContext {
- const AVClass *av_class;
- int log_level_offset;
- void *log_ctx;
- enum AVSampleFormat in_sample_fmt;
- enum AVSampleFormat int_sample_fmt;
- enum AVSampleFormat out_sample_fmt;
- AVChannelLayout used_ch_layout;
- AVChannelLayout in_ch_layout;
- AVChannelLayout out_ch_layout;
- int in_sample_rate;
- int out_sample_rate;
- int flags;
- float slev;
- float clev;
- float lfe_mix_level;
- float rematrix_volume;
- float rematrix_maxval;
- int matrix_encoding;
- const int *channel_map;
- int engine;
- AVChannelLayout user_used_chlayout;
- AVChannelLayout user_in_chlayout;
- AVChannelLayout user_out_chlayout;
- enum AVSampleFormat user_int_sample_fmt;
- int user_dither_method;
- struct DitherContext dither;
- int filter_size;
- int phase_shift;
- int linear_interp;
- int exact_rational;
- double cutoff;
- int filter_type;
- double kaiser_beta;
- double precision;
- int cheby;
- float min_compensation;
- float min_hard_compensation;
- float soft_compensation_duration;
- float max_soft_compensation;
- float async;
- int64_t firstpts_in_samples;
- int resample_first;
- int rematrix;
- int rematrix_custom;
- AudioData in;
- AudioData postin;
- AudioData midbuf;
- AudioData preout;
- AudioData out;
- AudioData in_buffer;
- AudioData silence;
- AudioData drop_temp;
- int in_buffer_index;
- int in_buffer_count;
- int resample_in_constraint;
- int flushed;
- int64_t outpts;
- int64_t firstpts;
- int drop_output;
- double delayed_samples_fixup;
- struct AudioConvert *in_convert;
- struct AudioConvert *out_convert;
- struct AudioConvert *full_convert;
- struct ResampleContext *resample;
- struct Resampler const *resampler;
- double matrix[SWR_CH_MAX][SWR_CH_MAX];
- float matrix_flt[SWR_CH_MAX][SWR_CH_MAX];
- 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];
- uint8_t matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1];
- 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;
-
- };
- av_warn_unused_result
- int swri_realloc_audio(AudioData *a, int count);
- void swri_noise_shaping_int16 (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count);
- void swri_noise_shaping_int32 (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count);
- void swri_noise_shaping_float (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count);
- void swri_noise_shaping_double(SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count);
- av_warn_unused_result
- int swri_rematrix_init(SwrContext *s);
- void swri_rematrix_free(SwrContext *s);
- int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy);
- int swri_rematrix_init_x86(struct SwrContext *s);
- av_warn_unused_result
- int swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt);
- av_warn_unused_result
- int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt);
- void swri_audio_convert_init_aarch64(struct AudioConvert *ac,
- enum AVSampleFormat out_fmt,
- enum AVSampleFormat in_fmt,
- int channels);
- void swri_audio_convert_init_arm(struct AudioConvert *ac,
- enum AVSampleFormat out_fmt,
- enum AVSampleFormat in_fmt,
- int channels);
- void swri_audio_convert_init_x86(struct AudioConvert *ac,
- enum AVSampleFormat out_fmt,
- enum AVSampleFormat in_fmt,
- int channels);
- #endif
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