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4b5f78337a
This makes sure that we only build files that need explicit SIMD support with the relevant CFLAGS. This allows the rest of the code to be built without, and specific SSE* code is only called after runtime checks for CPU features. https://bugzilla.gnome.org/show_bug.cgi?id=729276
114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/* GStreamer
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* Copyright (C) <2015> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_AUDIO_RESAMPLER_PRIVATE_H__
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#define __GST_AUDIO_RESAMPLER_PRIVATE_H__
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#include "audio-resampler.h"
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/* Contains a collection of all things found in other resamplers:
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* speex (filter construction, optimizations), ffmpeg (fixed phase filter, blackman filter),
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* SRC (linear interpolation, fixed precomputed tables),...
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*
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* Supports:
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* - S16, S32, F32 and F64 formats
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* - nearest, linear and cubic interpolation
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* - sinc based interpolation with kaiser or blackman-nutall windows
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* - fully configurable kaiser parameters
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* - dynamic linear or cubic interpolation of filter table, this can
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* use less memory but more CPU
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* - full filter table, generated from optionally linear or cubic
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* interpolation of filter table
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* - fixed filter table size with nearest neighbour phase, optionally
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* using a precomputed tables
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* - dynamic samplerate changes
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* - x86 and neon optimizations
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*/
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typedef void (*ConvertTapsFunc) (gdouble * tmp_taps, gpointer taps,
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gdouble weight, gint n_taps);
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typedef void (*InterpolateFunc) (gpointer o, const gpointer a, gint len,
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const gpointer icoeff, gint astride);
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typedef void (*ResampleFunc) (GstAudioResampler * resampler, gpointer in[],
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gsize in_len, gpointer out[], gsize out_len, gsize * consumed);
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typedef void (*DeinterleaveFunc) (GstAudioResampler * resampler,
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gpointer * sbuf, gpointer in[], gsize in_frames);
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struct _GstAudioResampler
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{
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GstAudioResamplerMethod method;
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GstAudioResamplerFlags flags;
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GstAudioFormat format;
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GstStructure *options;
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gint format_index;
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gint channels;
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gint in_rate;
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gint out_rate;
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gint bps;
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gint ostride;
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GstAudioResamplerFilterMode filter_mode;
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guint filter_threshold;
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GstAudioResamplerFilterInterpolation filter_interpolation;
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gdouble cutoff;
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gdouble kaiser_beta;
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/* for cubic */
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gdouble b, c;
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/* temp taps */
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gpointer tmp_taps;
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/* oversampled main filter table */
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gint oversample;
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gint n_taps;
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gpointer taps;
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gpointer taps_mem;
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gsize taps_stride;
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gint n_phases;
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gint alloc_taps;
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gint alloc_phases;
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/* cached taps */
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gpointer *cached_phases;
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gpointer cached_taps;
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gpointer cached_taps_mem;
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gsize cached_taps_stride;
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ConvertTapsFunc convert_taps;
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InterpolateFunc interpolate;
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DeinterleaveFunc deinterleave;
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ResampleFunc resample;
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gint blocks;
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gint inc;
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gint samp_inc;
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gint samp_frac;
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gint samp_index;
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gint samp_phase;
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gint skip;
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gpointer samples;
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gsize samples_len;
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gsize samples_avail;
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gpointer *sbuf;
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};
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#endif /* __GST_AUDIO_RESAMPLER_PRIVATE_H__ */
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