X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=alsa_writer.c;h=601353aaac84b7a8969d4bf9b5dc01d68242de19;hp=6a3d18a33464e3fe652afeadeae9e47579d92dae;hb=2349dbb8c69a97f271c8cb8440016ac5afc34dab;hpb=24495e62d3896d98d6c27f9665edfe6492ddd757

diff --git a/alsa_writer.c b/alsa_writer.c
index 6a3d18a3..601353aa 100644
--- a/alsa_writer.c
+++ b/alsa_writer.c
@@ -16,7 +16,7 @@
  *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  */
 
-/** \file alsa_writer.c Data specific to the alsa writer */
+/** \file alsa_writer.c paraslash's alsa output plugin */
 
 /*
  * Based in parts on aplay.c from the alsa-utils-1.0.8 package,
@@ -37,9 +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;
 };
 
 /*
@@ -138,7 +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) {
@@ -170,6 +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;