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Diffstat (limited to 'ffmpeg/libswresample/swresample_internal.h')
| -rw-r--r-- | ffmpeg/libswresample/swresample_internal.h | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/ffmpeg/libswresample/swresample_internal.h b/ffmpeg/libswresample/swresample_internal.h deleted file mode 100644 index ab19f21..0000000 --- a/ffmpeg/libswresample/swresample_internal.h +++ /dev/null @@ -1,199 +0,0 @@ -/* - * 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 - */ - -#ifndef SWR_INTERNAL_H -#define SWR_INTERNAL_H - -#include "swresample.h" -#include "libavutil/channel_layout.h" -#include "config.h" - -#define SQRT3_2 1.22474487139158904909 /* sqrt(3/2) */ - -#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]; ///< samples buffer per channel - uint8_t *data; ///< samples buffer - int ch_count; ///< number of channels - int bps; ///< bytes per sample - int count; ///< number of samples - int planar; ///< 1 if planar audio, 0 otherwise - enum AVSampleFormat fmt; ///< sample format -} AudioData; - -struct DitherContext { - enum SwrDitherType method; - int noise_pos; - float scale; - float noise_scale; ///< Noise scale - int ns_taps; ///< Noise shaping dither taps - float ns_scale; ///< Noise shaping dither scale - float ns_scale_1; ///< Noise shaping dither scale^-1 - int ns_pos; ///< Noise shaping dither position - float ns_coeffs[NS_TAPS]; ///< Noise shaping filter coefficients - float ns_errors[SWR_CH_MAX][2*NS_TAPS]; - AudioData noise; ///< noise used for dithering - AudioData temp; ///< temporary storage when writing into the input buffer isnt possible - int output_sample_bits; ///< the number of used output bits, needed to scale dither correctly -}; - -struct SwrContext { - 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 - float rematrix_maxval; ///< maximum value for rematrixing output - 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). 1.0 corresponds to half the output sample rate */ - 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; - - /* TODO: callbacks for ASM optimizations */ -}; - -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, int kaiser_beta, double precision, int cheby); -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); - -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; -}; - -extern struct Resampler const swri_resampler; - -int swri_realloc_audio(AudioData *a, int count); -int swri_resample_int16(struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx); -int swri_resample_int32(struct ResampleContext *c, int32_t *dst, const int32_t *src, int *consumed, int src_size, int dst_size, int update_ctx); -int swri_resample_float(struct ResampleContext *c, float *dst, const float *src, int *consumed, int src_size, int dst_size, int update_ctx); -int swri_resample_double(struct ResampleContext *c,double *dst, const double *src, int *consumed, int src_size, int dst_size, int update_ctx); - -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); - -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); -void swri_rematrix_init_x86(struct SwrContext *s); - -void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt); -int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt); - -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 |