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authorMax Kellermann <max@duempel.org>2009-02-16 01:39:00 +0100
committerMax Kellermann <max@duempel.org>2009-02-16 01:39:00 +0100
commit37bc31d161d486d0499cf64123b7561f57dd0c53 (patch)
tree54cb688aecd4f30f1afbf0f4d87d48a7abbe4fba /src
parent79b50b7d9c2ef84e0b74345a31a9b2f96d2690cd (diff)
downloadmpd-37bc31d161d486d0499cf64123b7561f57dd0c53.tar.gz
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output_plugin: replaced method "control()" with "mixer()"
The output plugin shouldn't know any specifics of the mixer API. Make it return the mixer object, and let the caller deal with it.
Diffstat (limited to 'src')
-rw-r--r--src/audio.c16
-rw-r--r--src/output/alsa_plugin.c17
-rw-r--r--src/output/oss_plugin.c17
-rw-r--r--src/output_plugin.h23
4 files changed, 45 insertions, 28 deletions
diff --git a/src/audio.c b/src/audio.c
index 47916a5f7..e5b043962 100644
--- a/src/audio.c
+++ b/src/audio.c
@@ -62,15 +62,17 @@ void finishAudioConfig(void)
bool mixer_control_setvol(unsigned int device, int volume, int rel)
{
struct audio_output *output;
+ struct mixer *mixer;
if (device >= audio_output_count())
return false;
output = audio_output_get(device);
- if (output->plugin && output->plugin->control) {
+ mixer = ao_plugin_get_mixer(output->plugin, output->data);
+ if (mixer != NULL) {
if (rel) {
int cur_volume;
- if (!output->plugin->control(output->data, AC_MIXER_GETVOL, &cur_volume)) {
+ if (!mixer_control(mixer, AC_MIXER_GETVOL, &cur_volume)) {
return false;
}
volume = volume + cur_volume;
@@ -80,7 +82,7 @@ bool mixer_control_setvol(unsigned int device, int volume, int rel)
else if (volume < 0)
volume = 0;
- return output->plugin->control(output->data, AC_MIXER_SETVOL, &volume);
+ return mixer_control(mixer, AC_MIXER_SETVOL, &volume);
}
return false;
}
@@ -88,13 +90,15 @@ bool mixer_control_setvol(unsigned int device, int volume, int rel)
bool mixer_control_getvol(unsigned int device, int *volume)
{
struct audio_output *output;
+ struct mixer *mixer;
if (device >= audio_output_count())
return false;
output = audio_output_get(device);
- if (output->plugin && output->plugin->control) {
- return output->plugin->control(output->data, AC_MIXER_GETVOL, volume);
- }
+ mixer = ao_plugin_get_mixer(output->plugin, output->data);
+ if (mixer != NULL)
+ return mixer_control(mixer, AC_MIXER_GETVOL, volume);
+
return false;
}
diff --git a/src/output/alsa_plugin.c b/src/output/alsa_plugin.c
index c26fcdf05..bbb03e80b 100644
--- a/src/output/alsa_plugin.c
+++ b/src/output/alsa_plugin.c
@@ -156,6 +156,14 @@ alsa_finish(void *data)
alsa_data_free(ad);
}
+static struct mixer *
+alsa_get_mixer(void *data)
+{
+ struct alsa_data *ad = data;
+
+ return ad->mixer;
+}
+
static bool
alsa_test_default_device(void)
{
@@ -465,21 +473,14 @@ alsa_play(void *data, const char *chunk, size_t size)
return true;
}
-static bool
-alsa_control(void *data, int cmd, void *arg)
-{
- struct alsa_data *ad = data;
- return mixer_control(ad->mixer, cmd, arg);
-}
-
const struct audio_output_plugin alsaPlugin = {
.name = "alsa",
.test_default_device = alsa_test_default_device,
.init = alsa_init,
.finish = alsa_finish,
+ .get_mixer = alsa_get_mixer,
.open = alsa_open,
.play = alsa_play,
.cancel = alsa_cancel,
.close = alsa_close,
- .control = alsa_control
};
diff --git a/src/output/oss_plugin.c b/src/output/oss_plugin.c
index c4b4698ee..007d5bc84 100644
--- a/src/output/oss_plugin.c
+++ b/src/output/oss_plugin.c
@@ -410,6 +410,14 @@ static void oss_finishDriver(void *data)
freeOssData(od);
}
+static struct mixer *
+oss_get_mixer(void *data)
+{
+ OssData *od = data;
+
+ return od->mixer;
+}
+
static int setParam(OssData * od, unsigned param, int *value)
{
int val = *value;
@@ -571,21 +579,14 @@ oss_playAudio(void *data, const char *playChunk, size_t size)
return true;
}
-static bool
-oss_control(void *data, int cmd, void *arg)
-{
- OssData *od = data;
- return mixer_control(od->mixer, cmd, arg);
-}
-
const struct audio_output_plugin ossPlugin = {
.name = "oss",
.test_default_device = oss_testDefault,
.init = oss_initDriver,
.finish = oss_finishDriver,
+ .get_mixer = oss_get_mixer,
.open = oss_openDevice,
.play = oss_playAudio,
.cancel = oss_dropBufferedAudio,
.close = oss_closeDevice,
- .control = oss_control,
};
diff --git a/src/output_plugin.h b/src/output_plugin.h
index 0166322fc..b652dc44e 100644
--- a/src/output_plugin.h
+++ b/src/output_plugin.h
@@ -64,6 +64,15 @@ struct audio_output_plugin {
void (*finish)(void *data);
/**
+ * Returns the mixer device associated with this audio output.
+ * This does not actually open the mixer device yet.
+ *
+ * @return the mixer object, or NULL if there is no mixer
+ * attached to this audio output
+ */
+ struct mixer *(*get_mixer)(void *data);
+
+ /**
* Really open the device.
* @param audio_format the audio format in which data is going
* to be delivered; may be modified by the plugin
@@ -104,12 +113,6 @@ struct audio_output_plugin {
* for continue to pause
*/
bool (*pause)(void *data);
-
- /**
- * Control the device. Usualy used for implementing
- * set and get mixer levels
- */
- bool (*control)(void *data, int cmd, void *arg);
};
static inline bool
@@ -135,6 +138,14 @@ ao_plugin_finish(const struct audio_output_plugin *plugin, void *data)
plugin->finish(data);
}
+static inline struct mixer *
+ao_plugin_get_mixer(const struct audio_output_plugin *plugin, void *data)
+{
+ return plugin->get_mixer != NULL
+ ? plugin->get_mixer(data)
+ : NULL;
+}
+
static inline bool
ao_plugin_open(const struct audio_output_plugin *plugin,
void *data, struct audio_format *audio_format)