+ if (e->n_channels > 2) {
+ /* FIXME: In some places code like this is used:
+ *
+ * e->masks[alsa_channel_ids[p]][e->n_channels-1]
+ *
+ * The definition of e->masks is
+ *
+ * pa_channel_position_mask_t
masks[SND_MIXER_SCHN_LAST][2];
+ *
+ * Since the array size is fixed at 2, we obviously
+ * don't support elements with more than two
+ * channels... */
+ pa_log_warn("Volume element %s has %u channels. That's
too much! I can't handle that!", e->alsa_name, e->n_channels);
+ return -1;
+ }
+
http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa
/alsa-mixer.c?id=527078523815587bfd021bc1d10782403e9b3e84
the answer was aleady stated in the patch
you need to change alsa-mixer.h
-pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST][2];
+pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST][8];
and
- if (e->n_channels > 2) {
+ if (e->n_channels > 8) {
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https://bugs.launchpad.net/bugs/1390474
Title:
"Volume element PCM has 6 channels. That's too much!" - PA doesn't
support elements with more than two channels
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