Release 4.10 sound/core/oss/route.c
/*
* Route Plug-In
* Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
*
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include "pcm_plugin.h"
static void zero_areas(struct snd_pcm_plugin_channel *dvp, int ndsts,
snd_pcm_uframes_t frames, snd_pcm_format_t format)
{
int dst = 0;
for (; dst < ndsts; ++dst) {
if (dvp->wanted)
snd_pcm_area_silence(&dvp->area, 0, frames, format);
dvp->enabled = 0;
dvp++;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi iwai | takashi iwai | 50 | 75.76% | 2 | 50.00% |
| jaroslav kysela | jaroslav kysela | 15 | 22.73% | 1 | 25.00% |
| clemens ladisch | clemens ladisch | 1 | 1.52% | 1 | 25.00% |
| Total | 66 | 100.00% | 4 | 100.00% |
static inline void copy_area(const struct snd_pcm_plugin_channel *src_channel,
struct snd_pcm_plugin_channel *dst_channel,
snd_pcm_uframes_t frames, snd_pcm_format_t format)
{
dst_channel->enabled = 1;
snd_pcm_area_copy(&src_channel->area, 0, &dst_channel->area, 0, frames, format);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jaroslav kysela | jaroslav kysela | 29 | 56.86% | 1 | 25.00% |
| takashi iwai | takashi iwai | 21 | 41.18% | 2 | 50.00% |
| clemens ladisch | clemens ladisch | 1 | 1.96% | 1 | 25.00% |
| Total | 51 | 100.00% | 4 | 100.00% |
static snd_pcm_sframes_t route_transfer(struct snd_pcm_plugin *plugin,
const struct snd_pcm_plugin_channel *src_channels,
struct snd_pcm_plugin_channel *dst_channels,
snd_pcm_uframes_t frames)
{
int nsrcs, ndsts, dst;
struct snd_pcm_plugin_channel *dvp;
snd_pcm_format_t format;
if (snd_BUG_ON(!plugin || !src_channels || !dst_channels))
return -ENXIO;
if (frames == 0)
return 0;
nsrcs = plugin->src_format.channels;
ndsts = plugin->dst_format.channels;
format = plugin->dst_format.format;
dvp = dst_channels;
if (nsrcs <= 1) {
/* expand to all channels */
for (dst = 0; dst < ndsts; ++dst) {
copy_area(src_channels, dvp, frames, format);
dvp++;
}
return frames;
}
for (dst = 0; dst < ndsts && dst < nsrcs; ++dst) {
copy_area(src_channels, dvp, frames, format);
dvp++;
src_channels++;
}
if (dst < ndsts)
zero_areas(dvp, ndsts - dst, frames, format);
return frames;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi iwai | takashi iwai | 120 | 61.86% | 3 | 50.00% |
| jaroslav kysela | jaroslav kysela | 73 | 37.63% | 2 | 33.33% |
| clemens ladisch | clemens ladisch | 1 | 0.52% | 1 | 16.67% |
| Total | 194 | 100.00% | 6 | 100.00% |
int snd_pcm_plugin_build_route(struct snd_pcm_substream *plug,
struct snd_pcm_plugin_format *src_format,
struct snd_pcm_plugin_format *dst_format,
struct snd_pcm_plugin **r_plugin)
{
struct snd_pcm_plugin *plugin;
int err;
if (snd_BUG_ON(!r_plugin))
return -ENXIO;
*r_plugin = NULL;
if (snd_BUG_ON(src_format->rate != dst_format->rate))
return -ENXIO;
if (snd_BUG_ON(src_format->format != dst_format->format))
return -ENXIO;
err = snd_pcm_plugin_build(plug, "route conversion",
src_format, dst_format, 0, &plugin);
if (err < 0)
return err;
plugin->transfer = route_transfer;
*r_plugin = plugin;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jaroslav kysela | jaroslav kysela | 75 | 59.52% | 1 | 25.00% |
| takashi iwai | takashi iwai | 51 | 40.48% | 3 | 75.00% |
| Total | 126 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| takashi iwai | takashi iwai | 243 | 54.00% | 3 | 42.86% |
| jaroslav kysela | jaroslav kysela | 204 | 45.33% | 3 | 42.86% |
| clemens ladisch | clemens ladisch | 3 | 0.67% | 1 | 14.29% |
| Total | 450 | 100.00% | 7 | 100.00% |
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