FFmpeg
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audio resampling More...
Go to the source code of this file.
Functions | |
static double | bessel (double x) |
0th order modified bessel function of the first kind. More... | |
static int | build_filter (ResampleContext *c, void *filter, double factor, int tap_count, int alloc, int phase_count, int scale, int filter_type, int kaiser_beta) |
builds a polyphase filterbank. More... | |
static ResampleContext * | resample_init (ResampleContext *c, int out_rate, int in_rate, int filter_size, int phase_shift, int linear, double cutoff0, enum AVSampleFormat format, enum SwrFilterType filter_type, int kaiser_beta, double precision, int cheby) |
static void | resample_free (ResampleContext **c) |
static int | set_compensation (ResampleContext *c, int sample_delta, int compensation_distance) |
static int | swri_resample (ResampleContext *c, uint8_t *dst, const uint8_t *src, int *consumed, int src_size, int dst_size, int update_ctx) |
static int | multiple_resample (ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed) |
static int64_t | get_delay (struct SwrContext *s, int64_t base) |
static int64_t | get_out_samples (struct SwrContext *s, int in_samples) |
static int | resample_flush (struct SwrContext *s) |
static int | invert_initial_buffer (ResampleContext *c, AudioData *dst, const AudioData *src, int in_count, int *out_idx, int *out_sz) |
Variables | |
struct Resampler const | swri_resampler |
audio resampling
Definition in file resample.c.
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0th order modified bessel function of the first kind.
Definition at line 34 of file resample.c.
Referenced by build_filter().
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builds a polyphase filterbank.
factor | resampling factor |
scale | wanted sum of coefficients for each filter |
filter_type | filter type |
kaiser_beta | kaiser window beta |
Definition at line 70 of file resample.c.
Referenced by resample_init().
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Definition at line 174 of file resample.c.
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Definition at line 250 of file resample.c.
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Definition at line 257 of file resample.c.
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Definition at line 270 of file resample.c.
Referenced by multiple_resample().
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Definition at line 308 of file resample.c.
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Definition at line 338 of file resample.c.
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Definition at line 348 of file resample.c.
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Definition at line 367 of file resample.c.
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Definition at line 384 of file resample.c.
struct Resampler const swri_resampler |
Definition at line 428 of file resample.c.
Referenced by swr_init().