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23db50630d
Add an option to do a lowpass filter on the FC channel to isolate the voices better and move the higher frequencies to the stereo channels. See #861
135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
/* Spa
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*
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* Copyright © 2018 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <spa/utils/defs.h>
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#include <spa/param/audio/raw.h>
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#undef SPA_LOG_TOPIC_DEFAULT
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#define SPA_LOG_TOPIC_DEFAULT log_topic
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extern struct spa_log_topic *log_topic;
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#include "crossover.h"
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#include "delay.h"
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#define VOLUME_MIN 0.0f
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#define VOLUME_NORM 1.0f
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#define _M(ch) (1UL << SPA_AUDIO_CHANNEL_ ## ch)
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#define MASK_MONO _M(FC)|_M(MONO)|_M(UNKNOWN)
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#define MASK_STEREO _M(FL)|_M(FR)|_M(UNKNOWN)
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#define MASK_QUAD _M(FL)|_M(FR)|_M(RL)|_M(RR)|_M(UNKNOWN)
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#define MASK_3_1 _M(FL)|_M(FR)|_M(FC)|_M(LFE)
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#define MASK_5_1 _M(FL)|_M(FR)|_M(FC)|_M(LFE)|_M(SL)|_M(SR)|_M(RL)|_M(RR)
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#define MASK_7_1 _M(FL)|_M(FR)|_M(FC)|_M(LFE)|_M(SL)|_M(SR)|_M(RL)|_M(RR)
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#define BUFFER_SIZE 4096
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#define BUFFER_SIZE 4096
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#define MAX_TAPS 255
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struct channelmix {
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uint32_t src_chan;
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uint32_t dst_chan;
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uint64_t src_mask;
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uint64_t dst_mask;
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uint32_t cpu_flags;
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#define CHANNELMIX_OPTION_MIX_LFE (1<<0) /**< mix LFE */
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#define CHANNELMIX_OPTION_NORMALIZE (1<<1) /**< normalize volumes */
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#define CHANNELMIX_OPTION_UPMIX (1<<2) /**< do simple upmixing */
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uint32_t options;
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struct spa_log *log;
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#define CHANNELMIX_FLAG_ZERO (1<<0) /**< all zero components */
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#define CHANNELMIX_FLAG_IDENTITY (1<<1) /**< identity matrix */
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#define CHANNELMIX_FLAG_EQUAL (1<<2) /**< all values are equal */
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#define CHANNELMIX_FLAG_COPY (1<<3) /**< 1 on diagonal, can be nxm */
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uint32_t flags;
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float matrix_orig[SPA_AUDIO_MAX_CHANNELS][SPA_AUDIO_MAX_CHANNELS];
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float matrix[SPA_AUDIO_MAX_CHANNELS][SPA_AUDIO_MAX_CHANNELS];
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float freq; /* sample frequency */
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float lfe_cutoff; /* in Hz, 0 is disabled */
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float fc_cutoff; /* in Hz, 0 is disabled */
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float rear_delay; /* in ms, 0 is disabled */
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float widen; /* stereo widen. 0 is disabled */
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uint32_t hilbert_taps; /* to phase shift, 0 disabled */
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struct lr4 lr4[SPA_AUDIO_MAX_CHANNELS];
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float buffer[2][BUFFER_SIZE];
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uint32_t pos[2];
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uint32_t delay;
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float taps[MAX_TAPS];
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uint32_t n_taps;
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void (*process) (struct channelmix *mix, void * SPA_RESTRICT dst[],
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const void * SPA_RESTRICT src[], uint32_t n_samples);
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void (*set_volume) (struct channelmix *mix, float volume, bool mute,
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uint32_t n_channel_volumes, float *channel_volumes);
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void (*free) (struct channelmix *mix);
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void *data;
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};
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int channelmix_init(struct channelmix *mix);
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#define channelmix_process(mix,...) (mix)->process(mix, __VA_ARGS__)
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#define channelmix_set_volume(mix,...) (mix)->set_volume(mix, __VA_ARGS__)
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#define channelmix_free(mix) (mix)->free(mix)
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#define DEFINE_FUNCTION(name,arch) \
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void channelmix_##name##_##arch(struct channelmix *mix, \
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void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[], \
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uint32_t n_samples);
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#define CHANNELMIX_OPS_MAX_ALIGN 16
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DEFINE_FUNCTION(copy, c);
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DEFINE_FUNCTION(f32_n_m, c);
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DEFINE_FUNCTION(f32_1_2, c);
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DEFINE_FUNCTION(f32_2_1, c);
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DEFINE_FUNCTION(f32_4_1, c);
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DEFINE_FUNCTION(f32_3p1_1, c);
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DEFINE_FUNCTION(f32_2_4, c);
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DEFINE_FUNCTION(f32_2_3p1, c);
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DEFINE_FUNCTION(f32_2_5p1, c);
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DEFINE_FUNCTION(f32_2_7p1, c);
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DEFINE_FUNCTION(f32_5p1_2, c);
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DEFINE_FUNCTION(f32_5p1_3p1, c);
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DEFINE_FUNCTION(f32_5p1_4, c);
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DEFINE_FUNCTION(f32_7p1_2, c);
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DEFINE_FUNCTION(f32_7p1_3p1, c);
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DEFINE_FUNCTION(f32_7p1_4, c);
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#if defined (HAVE_SSE)
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DEFINE_FUNCTION(copy, sse);
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DEFINE_FUNCTION(f32_2_4, sse);
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DEFINE_FUNCTION(f32_5p1_2, sse);
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DEFINE_FUNCTION(f32_5p1_3p1, sse);
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DEFINE_FUNCTION(f32_5p1_4, sse);
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DEFINE_FUNCTION(f32_7p1_4, sse);
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#endif
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