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/out/ao_null.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/out/ao_null.c')
-rw-r--r-- | audio/out/ao_null.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/audio/out/ao_null.c b/audio/out/ao_null.c new file mode 100644 index 0000000000..87f11a51b6 --- /dev/null +++ b/audio/out/ao_null.c @@ -0,0 +1,129 @@ +/* + * null audio output driver + * + * 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 "talloc.h" + +#include "config.h" +#include "osdep/timer.h" +#include "libaf/format.h" +#include "audio_out.h" + +struct priv { + unsigned last_time; + float buffered_bytes; +}; + +static void drain(struct ao *ao) +{ + struct priv *priv = ao->priv; + + unsigned now = GetTimer(); + priv->buffered_bytes -= (now - priv->last_time) / 1e6 * ao->bps; + if (priv->buffered_bytes < 0) + priv->buffered_bytes = 0; + priv->last_time = now; +} + +static int init(struct ao *ao, char *params) +{ + struct priv *priv = talloc_zero(ao, struct priv); + ao->priv = priv; + int samplesize = af_fmt2bits(ao->format) / 8; + ao->outburst = 256 * ao->channels * samplesize; + // A "buffer" for about 0.2 seconds of audio + ao->buffersize = (int)(ao->samplerate * 0.2 / 256 + 1) * ao->outburst; + ao->bps = ao->channels * ao->samplerate * samplesize; + priv->last_time = GetTimer(); + + return 0; +} + +// close audio device +static void uninit(struct ao *ao, bool cut_audio) +{ +} + +// stop playing and empty buffers (for seeking/pause) +static void reset(struct ao *ao) +{ + struct priv *priv = ao->priv; + priv->buffered_bytes = 0; +} + +// stop playing, keep buffers (for pause) +static void pause(struct ao *ao) +{ + // for now, just call reset(); + reset(ao); +} + +// resume playing, after audio_pause() +static void resume(struct ao *ao) +{ +} + +static int get_space(struct ao *ao) +{ + struct priv *priv = ao->priv; + + drain(ao); + return ao->buffersize - priv->buffered_bytes; +} + +static int play(struct ao *ao, void *data, int len, int flags) +{ + struct priv *priv = ao->priv; + + int maxbursts = (ao->buffersize - priv->buffered_bytes) / ao->outburst; + int playbursts = len / ao->outburst; + int bursts = playbursts > maxbursts ? maxbursts : playbursts; + priv->buffered_bytes += bursts * ao->outburst; + return bursts * ao->outburst; +} + +static float get_delay(struct ao *ao) +{ + struct priv *priv = ao->priv; + + drain(ao); + return priv->buffered_bytes / ao->bps; +} + +const struct ao_driver audio_out_null = { + .is_new = true, + .info = &(const struct ao_info) { + "Null audio output", + "null", + "Tobias Diedrich <ranma+mplayer@tdiedrich.de>", + "", + }, + .init = init, + .uninit = uninit, + .reset = reset, + .get_space = get_space, + .play = play, + .get_delay = get_delay, + .pause = pause, + .resume = resume, +}; + |