Removed volbal plugin (substituted with route)

diff --git a/src/pcm/plugin/volbal.c b/src/pcm/plugin/volbal.c
deleted file mode 100644 (file)
index 6deef5e..0000000
--- a/src/pcm/plugin/volbal.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- *  Volume and balance Plug-In
- *  Copyright (c) 1999 by Abramo Bagnara <abbagnara@racine.ra.it>
- *
- *
- *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-  
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <endian.h>
-#include <byteswap.h>
-#include "../pcm_local.h"
-
-#define VOLBAL_RESOLUTION 16
-
-struct volbal_private_data {
-       int src_voices;
-       unsigned int noop:1;
-       int ttable[0];
-};
-
-static int volbal_load_ttable(struct volbal_private_data *data, 
-                             const int *src_ttable)
-{
-       int src_voice, dst_voice;
-       const int *sptr;
-       int *dptr;
-       data->noop = 1;
-       if (src_ttable == NULL)
-               return 0;
-       dptr = data->ttable;
-       sptr = src_ttable;
-       for (dst_voice = 0; dst_voice < data->src_voices; ++dst_voice) {
-               int t = 0;
-               for (src_voice = 0; src_voice < data->src_voices; ++src_voice) {
-                       if (*sptr < 0 || *sptr > VOLBAL_RESOLUTION)
-                               return -EINVAL;
-                       if (src_voice == dst_voice) {
-                               if (*sptr != VOLBAL_RESOLUTION)
-                                       data->noop = 0;
-                       }
-                       else {
-                               if (*sptr != 0)
-                                       data->noop = 0;
-                       }
-                       t += *sptr;
-                       *dptr++ = *sptr++;
-               }
-               if (t > VOLBAL_RESOLUTION)
-                       return -EINVAL;
-       }
-       return 0;
-}
-
-static void volbal(int voices, int samples, int *ttable,
-                  signed short *src_ptr, signed short *dst_ptr)
-{
-       while (samples-- > 0) {
-               int dst_voice;
-               int *t = ttable;
-               for (dst_voice = 0; dst_voice < voices; ++dst_voice) {
-                       int v = 0;
-                       int src_voice;
-                       signed short *s = src_ptr;
-                       for (src_voice = 0; src_voice < voices; ++src_voice) {
-                               v +=  (int) *s++ * *t++ / VOLBAL_RESOLUTION;
-                       }
-                       *dst_ptr++ = v;
-               }
-               src_ptr += voices;
-       }
-}
-
-static ssize_t volbal_transfer(snd_pcm_plugin_t *plugin,
-                            char *src_ptr, size_t src_size,
-                            char *dst_ptr, size_t dst_size)
-{
-       struct volbal_private_data *data;
-
-       if (plugin == NULL || src_ptr == NULL || src_size < 0 ||
-                             dst_ptr == NULL || dst_size < 0)
-               return -EINVAL;
-       if (src_size == 0)
-               return 0;
-       data = (struct volbal_private_data *)snd_pcm_plugin_extra_data(plugin);
-       if (data->noop) {
-               memcpy(dst_ptr, src_ptr, src_size);
-               return src_size;
-       }
-
-       volbal(data->src_voices, src_size / 2 / data->src_voices, data->ttable,
-              (signed short *)src_ptr, (signed short *)dst_ptr);
-       return src_size;
-}
-
-static ssize_t volbal_src_size(snd_pcm_plugin_t *plugin, size_t size)
-{
-       if (!plugin || size <= 0)
-               return -EINVAL;
-       return size;
-}
-
-static ssize_t volbal_dst_size(snd_pcm_plugin_t *plugin, size_t size)
-{
-       if (!plugin || size <= 0)
-               return -EINVAL;
-       return size;
-}
-
-int snd_pcm_plugin_build_volbal(snd_pcm_format_t *src_format,
-                               snd_pcm_format_t *dst_format,
-                               int *ttable,
-                               snd_pcm_plugin_t **r_plugin)
-{
-       struct volbal_private_data *data;
-       snd_pcm_plugin_t *plugin;
-       int err;
-
-       if (!r_plugin)
-               return -EINVAL;
-       *r_plugin = NULL;
-       if (src_format->interleave != dst_format->interleave)
-               return -EINVAL;
-       if (!dst_format->interleave)
-               return -EINVAL;
-       if (src_format->format != dst_format->format)
-               return -EINVAL;
-       if (src_format->rate != dst_format->rate)
-               return -EINVAL;
-       if (src_format->voices != dst_format->voices)
-               return -EINVAL;
-
-       if (src_format->voices < 1)
-               return -EINVAL;
-       if (src_format->format != SND_PCM_SFMT_S16_LE)
-               return -EINVAL;
-       plugin = snd_pcm_plugin_build("Volume/balance conversion",
-                                     sizeof(struct volbal_private_data) + 
-                                     sizeof(data->ttable[0]) * src_format->voices * src_format->voices);
-       if (plugin == NULL)
-               return -ENOMEM;
-       data = (struct volbal_private_data *)snd_pcm_plugin_extra_data(plugin);
-
-       data->src_voices = src_format->voices;
-       if ((err = volbal_load_ttable(data, ttable)) < 0)
-               return err;
-       plugin->transfer = volbal_transfer;
-       plugin->src_size = volbal_src_size;
-       plugin->dst_size = volbal_dst_size;
-       *r_plugin = plugin;
-       return 0;
-}