diff options
author | wm4 <wm4@nowhere> | 2012-11-05 17:02:04 +0100 |
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committer | wm4 <wm4@nowhere> | 2012-11-12 20:06:14 +0100 |
commit | d4bdd0473d6f43132257c9fb3848d829755167a3 (patch) | |
tree | 8021c2f7da1841393c8c832105e20cd527826d6c /audio/filter/af_sweep.c | |
parent | bd48deba77bd5582c5829d6fe73a7d2571088aba (diff) | |
download | mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.bz2 mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.xz |
Rename directories, move files (step 1 of 2) (does not compile)
Tis drops the silly lib prefixes, and attempts to organize the tree in
a more logical way. Make the top-level directory less cluttered as
well.
Renames the following directories:
libaf -> audio/filter
libao2 -> audio/out
libvo -> video/out
libmpdemux -> demux
Split libmpcodecs:
vf* -> video/filter
vd*, dec_video.* -> video/decode
mp_image*, img_format*, ... -> video/
ad*, dec_audio.* -> audio/decode
libaf/format.* is moved to audio/ - this is similar to how mp_image.*
is located in video/.
Move most top-level .c/.h files to core. (talloc.c/.h is left on top-
level, because it's external.) Park some of the more annoying files
in compat/. Some of these are relicts from the time mplayer used
ffmpeg internals.
sub/ is not split, because it's too much of a mess (subtitle code is
mixed with OSD display and rendering).
Maybe the organization of core is not ideal: it mixes playback core
(like mplayer.c) and utility helpers (like bstr.c/h). Should the need
arise, the playback core will be moved somewhere else, while core
contains all helper and common code.
Diffstat (limited to 'audio/filter/af_sweep.c')
-rw-r--r-- | audio/filter/af_sweep.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/audio/filter/af_sweep.c b/audio/filter/af_sweep.c new file mode 100644 index 0000000000..6d1106fefc --- /dev/null +++ b/audio/filter/af_sweep.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of MPlayer. + * + * MPlayer 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. + * + * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#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) +{ + af_sweept* s = (af_sweept*)af->setup; + struct mp_audio *data= (struct mp_audio*)arg; + + switch(cmd){ + case AF_CONTROL_REINIT: + af->data->nch = data->nch; + af->data->format = AF_FORMAT_S16_NE; + af->data->bps = 2; + af->data->rate = data->rate; + + return AF_OK; + case AF_CONTROL_COMMAND_LINE: + sscanf((char*)arg,"%lf", &s->delta); + return AF_OK; +/* case AF_CONTROL_RESAMPLE_RATE | AF_CONTROL_SET: + af->data->rate = *(int*)arg; + return AF_OK;*/ + } + return AF_UNKNOWN; +} + +// Deallocate memory +static void uninit(struct af_instance* af) +{ + free(af->data); + free(af->setup); +} + +// Filter data through filter +static struct mp_audio* play(struct af_instance* af, struct mp_audio* data) +{ + af_sweept *s = af->setup; + int i, j; + int16_t *in = (int16_t*)data->audio; + int chans = data->nch; + int in_len = data->len/(2*chans); + + 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; + } + + return data; +} + +static int af_open(struct af_instance* af){ + af->control=control; + af->uninit=uninit; + af->play=play; + af->mul=1; + af->data=calloc(1,sizeof(struct mp_audio)); + af->setup=calloc(1,sizeof(af_sweept)); + return AF_OK; +} + +struct af_info af_info_sweep = { + "sine sweep", + "sweep", + "Michael Niedermayer", + "", + AF_FLAGS_REENTRANT, + af_open +}; |