diff options
Diffstat (limited to 'audio/filter/af_karaoke.c')
-rw-r--r-- | audio/filter/af_karaoke.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/audio/filter/af_karaoke.c b/audio/filter/af_karaoke.c deleted file mode 100644 index 0c8dc626d7..0000000000 --- a/audio/filter/af_karaoke.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * simple voice removal filter - * - * copyright (c) 2006 Reynaldo H. Verdejo Pinochet - * Based on code by Alex Beregszaszi for his 'center' filter. - * - * This file is part of mpv. - * - * mpv is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * mpv 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with mpv. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "af.h" - -// Data for specific instances of this filter - -// Initialization and runtime control -static int control(struct af_instance* af, int cmd, void* arg) -{ - switch(cmd){ - case AF_CONTROL_REINIT: - mp_audio_copy_config(af->data, (struct mp_audio*)arg); - mp_audio_set_format(af->data, AF_FORMAT_FLOAT); - return af_test_output(af,(struct mp_audio*)arg); - } - return AF_UNKNOWN; -} - -static int filter_frame(struct af_instance *af, struct mp_audio *c) -{ - if (!c) - return 0; - if (af_make_writeable(af, c) < 0) { - talloc_free(c); - return 0; - } - - float* a = c->planes[0]; // Audio data - int nch = c->nch; // Number of channels - int len = c->samples*nch; // Number of samples in current audio block - register int i; - - /* - FIXME1 add a low band pass filter to avoid suppressing - centered bass/drums - FIXME2 better calculated* attenuation factor - */ - - for(i=0;i<len;i+=nch) - { - a[i] = (a[i] - a[i+1]) * 0.7; - a[i+1]=a[i]; - } - - af_add_output_frame(af, c); - return 0; -} - -// Allocate memory and set function pointers -static int af_open(struct af_instance* af){ - af->control = control; - af->filter_frame = filter_frame; - return AF_OK; -} - -// Description of this filter -const struct af_info af_info_karaoke = { - .info = "Simple karaoke/voice-removal audio filter", - .name = "karaoke", - .flags = AF_FLAGS_NOT_REENTRANT, - .open = af_open, -}; |