Added code to show the formats when the plug PCM can't find a conversion code

diff --git a/src/pcm/pcm_plug.c b/src/pcm/pcm_plug.c
index e10f84516e1bbfecbb02c9f0c5df0b87ffe537f3..2f910c38f5650b37d6e2b7a4968c1d2836f3ccc1 100644 (file)
--- a/src/pcm/pcm_plug.c
+++ b/src/pcm/pcm_plug.c
@@ -544,6 +544,20 @@ static int snd_pcm_plug_hw_refine_schange(snd_pcm_t *pcm, snd_pcm_hw_params_t *p
                        snd_pcm_format_mask_set(&sfmt_mask, f);
                }
 
+               if (snd_pcm_format_mask_empty(&sfmt_mask)) {
+                       SNDERR("Unable to find an useable slave format");
+                       for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
+                               if (!snd_pcm_format_mask_test(format_mask, format))
+                                       continue;
+                               SNDERR("Format: %s", snd_pcm_format_name(format));
+                       }
+                       for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
+                               if (!snd_pcm_format_mask_test(sformat_mask, format))
+                                       continue;
+                               SNDERR("Slave format: %s", snd_pcm_format_name(format));
+                       }
+                       return -EINVAL;
+               }
                err = snd_pcm_hw_param_set_mask(slave, sparams, SND_CHANGE,
                                                SND_PCM_HW_PARAM_FORMAT, &sfmt_mask);
                assert(err >= 0);