X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=alsa_writer.c;h=601353aaac84b7a8969d4bf9b5dc01d68242de19;hp=b0bc3b095826924fe799da12c0bc79a8b0241cba;hb=36ee1cbaaa368a4f84291aada064188c41db0e7a;hpb=780f86d5f849308b5100b087c6b223a6deef1dd7

diff --git a/alsa_writer.c b/alsa_writer.c
index b0bc3b09..601353aa 100644
--- a/alsa_writer.c
+++ b/alsa_writer.c
@@ -16,6 +16,8 @@
  *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  */
 
+/** \file alsa_writer.c paraslash's alsa output plugin */
+
 /*
  * Based in parts on aplay.c from the alsa-utils-1.0.8 package,
  * Copyright (c) by Jaroslav Kysela <perex@suse.cz>, which is
@@ -35,9 +37,13 @@
 extern struct gengetopt_args_info conf;
 
 #define FORMAT SND_PCM_FORMAT_S16_LE
+
+/** data specific to the alsa writer */
 struct private_alsa_data {
-	snd_pcm_t *handle;
-	size_t bytes_per_frame;
+/** the alsa handle */
+snd_pcm_t *handle;
+/** determined and set by alsa_open() */
+size_t bytes_per_frame;
 };
 
 /*
@@ -136,7 +142,7 @@ static int alsa_write(char *data, size_t nbytes, struct writer_node *wn)
 {
 	struct private_alsa_data *pad = wn->private_data;
 	size_t frames = nbytes / pad->bytes_per_frame;
-	unsigned char *d = data;
+	unsigned char *d = (unsigned char*)data;
 	snd_pcm_sframes_t r, result = 0;
 
 	while (frames > 0) {
@@ -168,6 +174,7 @@ static void alsa_close(struct writer_node *wn)
 	free(pad);
 }
 
+/** the init function of the alsa writer */
 void alsa_writer_init(struct writer *w)
 {
 	w->open = alsa_open;