* systty.h: Remove code for Aix on 386, unsupported platform.

[bpt/emacs.git] / src / sound.c

diff --git a/src/sound.c b/src/sound.c
index b6f5ff5..5067353 100644 (file)
--- a/src/sound.c
+++ b/src/sound.c
@@ -1,13 +1,13 @@
 /* sound.c -- sound support.
    Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004,
-                 2005, 2006 Free Software Foundation, Inc.
+                 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs 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, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,9 +15,7 @@ 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 GNU Emacs; see the file COPYING.  If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Gerd Moellmann <gerd@gnu.org>.  Tested with Luigi's
    driver on FreeBSD 2.2.7 with a SoundBlaster 16.  */
@@ -97,7 +95,6 @@ Boston, MA 02110-1301, USA.  */
 #endif /* WINDOWSNT */
 
 /* BEGIN: Common Definitions */
-#define abs(X)    ((X) < 0 ? -(X) : (X))
 
 /* Symbols.  */
 
@@ -621,12 +618,18 @@ wav_play (s, sd)
       char *buffer;
       int nbytes;
       int blksize = sd->period_size ? sd->period_size (sd) : 2048;
+      int data_left = header->data_length;
 
       buffer = (char *) alloca (blksize);
       lseek (s->fd, sizeof *header, SEEK_SET);
-
-      while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0)
-       sd->write (sd, buffer, nbytes);
+      while (data_left > 0
+             && (nbytes = emacs_read (s->fd, buffer, blksize)) > 0)
+        {
+          /* Don't play possible garbage at the end of file */
+          if (data_left < nbytes) nbytes = data_left;
+          data_left -= nbytes;
+          sd->write (sd, buffer, nbytes);
+        }
 
       if (nbytes < 0)
        sound_perror ("Error reading sound file");
@@ -986,7 +989,8 @@ alsa_period_size (sd)
        struct sound_device *sd;
 {
   struct alsa_params *p = (struct alsa_params *) sd->data;
-  return p->period_size;
+  int fact = snd_pcm_format_size (sd->format, 1) * sd->channels;
+  return p->period_size * (fact > 0 ? fact : 1);
 }
 
 static void
@@ -1099,9 +1103,9 @@ alsa_configure (sd)
               {
                 if (snd_mixer_selem_has_playback_volume (e))
                   {
-                    long pmin, pmax;
+                    long pmin, pmax, vol;
                     snd_mixer_selem_get_playback_volume_range (e, &pmin, &pmax);
-                    long vol = pmin + (sd->volume * (pmax - pmin)) / 100;
+                    vol = pmin + (sd->volume * (pmax - pmin)) / 100;
 
                     for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++)
                       snd_mixer_selem_set_playback_volume (e, chn, vol);
@@ -1209,9 +1213,10 @@ alsa_write (sd, buffer, nbytes)
 
   while (nwritten < nbytes)
     {
-      err = snd_pcm_writei (p->handle,
-                            buffer + nwritten,
-                            (nbytes - nwritten)/fact);
+      snd_pcm_uframes_t frames = (nbytes - nwritten)/fact;
+      if (frames == 0) break;
+      
+      err = snd_pcm_writei (p->handle, buffer + nwritten, frames);
       if (err < 0)
         {
           if (err == -EPIPE)