X-Git-Url: https://git.distorted.org.uk/~mdw/disorder/blobdiff_plain/b50cfb8a0d4fc71877ae0bfcd7b28879886a2ac1..211af11eabdfa1226ee2c7aec25002a1d7b25567:/lib/uaudio-alsa.c

diff --git a/lib/uaudio-alsa.c b/lib/uaudio-alsa.c
index be716cf..721639c 100644
--- a/lib/uaudio-alsa.c
+++ b/lib/uaudio-alsa.c
@@ -26,6 +26,7 @@
 #include "mem.h"
 #include "log.h"
 #include "uaudio.h"
+#include "configuration.h"
 
 /** @brief The current PCM handle */
 static snd_pcm_t *alsa_pcm;
@@ -135,7 +136,8 @@ static void alsa_start(uaudio_callback *callback,
   alsa_open();
   uaudio_thread_start(callback, userdata, alsa_play,
                       32 / uaudio_sample_size,
-                      4096 / uaudio_sample_size);
+                      4096 / uaudio_sample_size,
+                      0);
 }
 
 static void alsa_stop(void) {
@@ -149,6 +151,11 @@ static int to_percent(long n) {
   return (n - alsa_mixer_min) * 100 / (alsa_mixer_max - alsa_mixer_min);
 }
 
+/** @brief Convert a percentage to a level */
+static int from_percent(int n) {
+  return alsa_mixer_min + n * (alsa_mixer_max - alsa_mixer_min) / 100;
+}
+
 static void alsa_open_mixer(void) {
   int err;
   snd_mixer_selem_id_t *id;
@@ -159,8 +166,8 @@ static void alsa_open_mixer(void) {
   snd_mixer_selem_id_alloca(&id);
   if((err = snd_mixer_open(&alsa_mixer_handle, 0)))
     fatal(0, "snd_mixer_open: %s", snd_strerror(err));
-  if((err = snd_mixer_attach(alsa_mixer_handle, config->device)))
-    fatal(0, "snd_mixer_attach %s: %s", config->device, snd_strerror(err));
+  if((err = snd_mixer_attach(alsa_mixer_handle, device)))
+    fatal(0, "snd_mixer_attach %s: %s", device, snd_strerror(err));
   if((err = snd_mixer_selem_register(alsa_mixer_handle,
                                      0/*options*/, 0/*classp*/)))
     fatal(0, "snd_mixer_selem_register %s: %s",
@@ -240,6 +247,12 @@ static void alsa_set_volume(int *left, int *right) {
   *right = to_percent(r);
 }
 
+static void alsa_configure(void) {
+  uaudio_set("device", config->device);
+  uaudio_set("mixer-control", config->mixer);
+  uaudio_set("mixer-channel", config->channel);
+}
+
 const struct uaudio uaudio_alsa = {
   .name = "alsa",
   .options = alsa_options,
@@ -251,6 +264,7 @@ const struct uaudio uaudio_alsa = {
   .close_mixer = alsa_close_mixer,
   .get_volume = alsa_get_volume,
   .set_volume = alsa_set_volume,
+  .configure = alsa_configure
 };
 
 #endif