diff options
Diffstat (limited to 'audio/filter/af_sweep.c')
-rw-r--r-- | audio/filter/af_sweep.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/audio/filter/af_sweep.c b/audio/filter/af_sweep.c deleted file mode 100644 index 5f338638ed..0000000000 --- a/audio/filter/af_sweep.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at> - * - * 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 <inttypes.h> -#include <math.h> - -#include "config.h" -#include "af.h" - -typedef struct af_sweep_s{ - double x; - double delta; -}af_sweept; - - -// Initialization and runtime control -static int control(struct af_instance* af, int cmd, void* arg) -{ - struct mp_audio *data= (struct mp_audio*)arg; - - switch(cmd){ - case AF_CONTROL_REINIT: - mp_audio_copy_config(af->data, data); - mp_audio_set_format(af->data, AF_FORMAT_S16); - - return af_test_output(af, data); - } - return AF_UNKNOWN; -} - -static int filter_frame(struct af_instance *af, struct mp_audio *data) -{ - if (!data) - return 0; - if (af_make_writeable(af, data) < 0) { - talloc_free(data); - return 0; - } - - af_sweept *s = af->priv; - int i, j; - int16_t *in = (int16_t*)data->planes[0]; - int chans = data->nch; - int in_len = data->samples; - - for(i=0; i<in_len; i++){ - for(j=0; j<chans; j++) - in[i*chans+j]= 32000*sin(s->x*s->x); - s->x += s->delta; - if(2*s->x*s->delta >= 3.141592) s->x=0; - } - - af_add_output_frame(af, data); - return 0; -} - -static int af_open(struct af_instance* af){ - af->control=control; - af->filter_frame = filter_frame; - return AF_OK; -} - -#define OPT_BASE_STRUCT af_sweept -const struct af_info af_info_sweep = { - .info = "sine sweep", - .name = "sweep", - .open = af_open, - .priv_size = sizeof(af_sweept), - .options = (const struct m_option[]) { - OPT_DOUBLE("delta", delta, 0), - {0} - }, -}; |