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ext/alsa/gstalsa.c: Small code cleanup.
Original commit message from CVS: * ext/alsa/gstalsa.c: (gst_alsa_detect_rates), (gst_alsa_detect_channels), (gst_alsa_probe_supported_formats): Small code cleanup. * ext/alsa/gstalsamixer.c: (gst_alsa_mixer_open), (gst_alsa_mixer_new): Remove hack that always set the device to hw:0*. Properly find the card name for whatever device was configured. Do some better debugging. Fixes #350784. * ext/alsa/gstalsamixerelement.c: (gst_alsa_mixer_element_set_property), (gst_alsa_mixer_element_change_state): Cleanups. Handle setting of a NULL device name better.
This commit is contained in:
Wim Taymans
parent
977f089d84
commit
5fd36709af
4 changed files with 85 additions and 55 deletions
19
ChangeLog
19
ChangeLog
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@ -1,3 +1,22 @@
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2006-08-13 Wim Taymans <wim@fluendo.com>
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* ext/alsa/gstalsa.c: (gst_alsa_detect_rates),
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(gst_alsa_detect_channels), (gst_alsa_probe_supported_formats):
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Small code cleanup.
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* ext/alsa/gstalsamixer.c: (gst_alsa_mixer_open),
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(gst_alsa_mixer_new):
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Remove hack that always set the device to hw:0*.
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Properly find the card name for whatever device was configured.
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Do some better debugging.
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Fixes #350784.
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* ext/alsa/gstalsamixerelement.c:
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(gst_alsa_mixer_element_set_property),
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(gst_alsa_mixer_element_change_state):
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Cleanups.
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Handle setting of a NULL device name better.
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2006-08-11 Wim Taymans <wim@fluendo.com>
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* gst/adder/gstadder.c:
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@ -65,6 +65,7 @@ gst_alsa_detect_rates (GstObject * obj, snd_pcm_hw_params_t * hw_params,
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return caps;
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/* ERRORS */
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min_rate_err:
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{
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GST_ERROR_OBJECT (obj, "failed to query minimum sample rate: %s",
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@ -328,6 +329,7 @@ gst_alsa_detect_channels (GstObject * obj, snd_pcm_hw_params_t * hw_params,
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return caps;
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/* ERRORS */
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min_chan_error:
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{
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GST_ERROR_OBJECT (obj, "failed to query minimum channel count: %s",
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@ -375,12 +377,12 @@ gst_alsa_probe_supported_formats (GstObject * obj, snd_pcm_t * handle,
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return caps;
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/* ERRORS */
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error:
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{
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GST_ERROR_OBJECT (obj, "failed to query formats: %s", snd_strerror (err));
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return NULL;
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}
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subroutine_error:
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{
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GST_ERROR_OBJECT (obj, "failed to query formats");
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@ -44,76 +44,78 @@
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/* First some utils, then the mixer implementation */
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static gboolean
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gst_alsa_mixer_open (GstAlsaMixer * mixer)
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{
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gint err, devicenum;
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gint err;
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snd_ctl_t *ctl;
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snd_ctl_card_info_t *card_info;
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g_return_val_if_fail (mixer->handle == NULL, FALSE);
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/* open and initialize the mixer device */
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err = snd_mixer_open (&mixer->handle, 0);
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if (err < 0 || mixer->handle == NULL) {
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GST_WARNING ("Cannot open empty mixer.");
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mixer->handle = NULL;
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return FALSE;
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}
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/* hack hack hack hack hack!!!!! */
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if (strncmp (mixer->device, "default", 7) == 0) {
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/* hack! */
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g_free (mixer->device);
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mixer->device = g_strdup ("hw:0");
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} else if (strncmp (mixer->device, "hw:", 3) == 0) {
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/* ok */
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} else if (strncmp (mixer->device, "plughw:", 7) == 0) {
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gchar *freeme = mixer->device;
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mixer->device = g_strdup (freeme + 4);
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g_free (freeme);
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} else {
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goto error;
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}
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if (strchr (mixer->device, ','))
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strchr (mixer->device, ',')[0] = '\0';
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if (err < 0 || mixer->handle == NULL)
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goto open_failed;
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if ((err = snd_mixer_attach (mixer->handle, mixer->device)) < 0) {
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GST_WARNING ("Cannot open mixer for sound device `%s'.", mixer->device);
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GST_WARNING ("Cannot open mixer for sound device '%s': %s", mixer->device,
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snd_strerror (err));
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goto error;
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}
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if ((err = snd_mixer_selem_register (mixer->handle, NULL, NULL)) < 0) {
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GST_WARNING ("Cannot register mixer elements.");
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GST_WARNING ("Cannot register mixer elements: %s", snd_strerror (err));
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goto error;
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}
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if ((err = snd_mixer_load (mixer->handle)) < 0) {
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GST_WARNING ("Cannot load mixer settings.");
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GST_WARNING ("Cannot load mixer settings: %s", snd_strerror (err));
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goto error;
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}
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/* I don't know how to get a device name from a mixer handle. So on
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* to the ugly hacks here, then... */
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if (sscanf (mixer->device, "hw:%d", &devicenum) == 1) {
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gchar *name;
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if (!snd_card_get_name (devicenum, &name)) {
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mixer->cardname = g_strdup (name);
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free (name);
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GST_DEBUG ("Card name = %s", GST_STR_NULL (mixer->cardname));
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}
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/* now get the device name, any of this is not fatal */
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g_free (mixer->cardname);
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if ((err = snd_ctl_open (&ctl, mixer->device, 0)) < 0) {
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GST_WARNING ("Cannot open CTL: %s", snd_strerror (err));
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goto no_card_name;
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}
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GST_INFO ("Successfully opened mixer for device `%s'.", mixer->device);
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snd_ctl_card_info_alloca (&card_info);
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if ((err = snd_ctl_card_info (ctl, card_info)) < 0) {
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GST_WARNING ("Cannot get card info: %s", snd_strerror (err));
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snd_ctl_close (ctl);
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goto no_card_name;
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}
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mixer->cardname = g_strdup (snd_ctl_card_info_get_name (card_info));
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GST_DEBUG ("Card name = %s", GST_STR_NULL (mixer->cardname));
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snd_ctl_close (ctl);
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if (FALSE) {
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no_card_name:
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mixer->cardname = g_strdup ("Unknown");
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GST_DEBUG ("Cannot find card name");
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}
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GST_INFO ("Successfully opened mixer for device '%s'.", mixer->device);
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return TRUE;
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/* ERROR */
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open_failed:
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{
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GST_WARNING ("Cannot open mixer: %s", snd_strerror (err));
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mixer->handle = NULL;
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return FALSE;
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}
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error:
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snd_mixer_close (mixer->handle);
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mixer->handle = NULL;
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return FALSE;
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{
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snd_mixer_close (mixer->handle);
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mixer->handle = NULL;
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return FALSE;
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}
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}
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static void
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@ -230,11 +232,12 @@ gst_alsa_mixer_new (const char *device, GstAlsaMixerDirection dir)
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return ret;
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/* ERRORS */
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error:
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if (ret)
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{
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gst_alsa_mixer_free (ret);
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return NULL;
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return NULL;
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}
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}
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void
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@ -35,7 +35,6 @@ enum
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PROP_DEVICE_NAME
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};
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static const GstElementDetails gst_alsa_mixer_element_details =
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GST_ELEMENT_DETAILS ("Alsa mixer",
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"Generic/Audio",
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@ -160,6 +159,10 @@ gst_alsa_mixer_element_set_property (GObject * object, guint prop_id,
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GST_OBJECT_LOCK (this);
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g_free (this->device);
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this->device = g_value_dup_string (value);
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/* make sure we never set NULL, this is nice when we want to open the
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* device. */
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if (this->device == NULL)
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this->device = g_strdup (DEFAULT_PROP_DEVICE);
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GST_OBJECT_UNLOCK (this);
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break;
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}
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@ -208,14 +211,9 @@ gst_alsa_mixer_element_change_state (GstElement * element,
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!this->mixer) {
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const gchar *device = (this->device) ? this->device : "default";
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this->mixer = gst_alsa_mixer_new (device, GST_ALSA_MIXER_ALL);
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if (!this->mixer) {
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GST_ELEMENT_ERROR (element, RESOURCE, OPEN_READ_WRITE, (NULL),
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("Failed to open alsa mixer device '%s'", device));
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return GST_STATE_CHANGE_FAILURE;
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}
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this->mixer = gst_alsa_mixer_new (this->device, GST_ALSA_MIXER_ALL);
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if (!this->mixer)
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goto open_failed;
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}
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break;
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default:
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@ -238,4 +236,12 @@ gst_alsa_mixer_element_change_state (GstElement * element,
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}
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return ret;
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/* ERRORS */
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open_failed:
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{
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GST_ELEMENT_ERROR (element, RESOURCE, OPEN_READ_WRITE, (NULL),
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("Failed to open alsa mixer device '%s'", this->device));
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return GST_STATE_CHANGE_FAILURE;
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}
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}
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