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109 lines
5 KiB
C
109 lines
5 KiB
C
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/* 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_MACROS_H__
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#define __GST_AUDIO_RESAMPLER_MACROS_H__
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#include <string.h>
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#include "audio-resampler-private.h"
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#define PRECISION_S16 15
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#define PRECISION_S32 31
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#define DECL_GET_TAPS_FULL_FUNC(type) \
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gpointer \
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get_taps_##type##_full (GstAudioResampler * resampler, \
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gint *samp_index, gint *samp_phase, type icoeff[4])
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DECL_GET_TAPS_FULL_FUNC (gint16);
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DECL_GET_TAPS_FULL_FUNC (gint32);
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DECL_GET_TAPS_FULL_FUNC (gfloat);
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DECL_GET_TAPS_FULL_FUNC (gdouble);
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#define DECL_GET_TAPS_INTERPOLATE_FUNC(type, inter) \
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gpointer \
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get_taps_##type##_##inter (GstAudioResampler * resampler, \
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gint *samp_index, gint *samp_phase, type icoeff[4]) \
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DECL_GET_TAPS_INTERPOLATE_FUNC (gint16, linear);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gint32, linear);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gfloat, linear);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gdouble, linear);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gint16, cubic);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gint32, cubic);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gfloat, cubic);
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DECL_GET_TAPS_INTERPOLATE_FUNC (gdouble, cubic);
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#define DECL_RESAMPLE_FUNC(type,inter,channels,arch) \
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void \
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resample_ ##type## _ ##inter## _ ##channels## _ ##arch (GstAudioResampler * resampler, \
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gpointer in[], gsize in_len, gpointer out[], gsize out_len, \
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gsize * consumed)
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#define MAKE_RESAMPLE_FUNC(type,inter,channels,arch) \
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DECL_RESAMPLE_FUNC (type, inter, channels, arch) \
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{ \
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gint c, di = 0; \
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gint n_taps = resampler->n_taps; \
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gint blocks = resampler->blocks; \
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gint ostride = resampler->ostride; \
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gint taps_stride = resampler->taps_stride; \
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gint samp_index = 0; \
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gint samp_phase = 0; \
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\
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for (c = 0; c < blocks; c++) { \
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type *ip = in[c]; \
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type *op = ostride == 1 ? out[c] : (type *)out[0] + c; \
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\
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samp_index = resampler->samp_index; \
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samp_phase = resampler->samp_phase; \
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\
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for (di = 0; di < out_len; di++) { \
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type *ipp, icoeff[4], *taps; \
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\
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ipp = &ip[samp_index * channels]; \
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\
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taps = get_taps_ ##type##_##inter \
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(resampler, &samp_index, &samp_phase, icoeff); \
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inner_product_ ##type##_##inter##_##channels##_##arch \
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(op, ipp, taps, n_taps, icoeff, taps_stride); \
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op += ostride; \
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} \
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if (in_len > samp_index) \
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memmove (ip, &ip[samp_index * channels], \
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(in_len - samp_index) * sizeof(type) * channels); \
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} \
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*consumed = samp_index - resampler->samp_index; \
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\
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resampler->samp_index = 0; \
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resampler->samp_phase = samp_phase; \
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}
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#define DECL_RESAMPLE_FUNC_STATIC(type,inter,channels,arch) \
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static DECL_RESAMPLE_FUNC (type, inter, channels, arch)
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#define MAKE_RESAMPLE_FUNC_STATIC(type,inter,channels,arch) \
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static MAKE_RESAMPLE_FUNC (type, inter, channels, arch)
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#endif /* __GST_AUDIO_RESAMPLER_MACROS_H__ */
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