doxygen: pcm: silence 'not documented' warnings

src/pcm/pcm.c

@@ -3444,7 +3444,7 @@ int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_areas, snd_pcm_uframes_
  * \param dst_size size in frames of the destination buffer
  * \param src_channels source areas specification (one for each channel)
  * \param src_offset offset in frames inside source area
- * \param dst_size size in frames of the source buffer
+ * \param src_size size in frames of the source buffer
  * \param channels channels count
  * \param frames frames to copy
  * \param format PCM sample format
@@ -7022,7 +7022,7 @@ void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimesta
 /**
  * \brief Get audio_tstamp_report from a PCM status container
  * \param obj pointer to #snd_pcm_status_t
- * \param audio_tstamp_report Pointer to returned report (valid fields are accuracy and type)
+ * \param audio_tstamp_report Pointer to returned report
  */
 void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj,
 					     snd_pcm_audio_tstamp_report_t *audio_tstamp_report)
@@ -7036,7 +7036,7 @@ void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj,
 /**
  * \brief set audio_tstamp_config from a PCM status container
  * \param obj pointer to #snd_pcm_status_t
- * \param audio_tstamp_config Pointer to config (valid fields are type and report_analog_delay)
+ * \param audio_tstamp_config Pointer to config (valid fields are type_requested and report_delay)
  */
 void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj,
 					     snd_pcm_audio_tstamp_config_t *audio_tstamp_config)

src/pcm/pcm_meter.c

@@ -34,9 +34,11 @@
 #include "pcm_local.h"
 #include "pcm_plugin.h"
 
+#ifndef DOC_HIDDEN
 #define atomic_read(ptr)    __atomic_load_n(ptr, __ATOMIC_SEQ_CST )
 #define atomic_add(ptr, n)  __atomic_add_fetch(ptr, n, __ATOMIC_SEQ_CST)
 #define atomic_dec(ptr)     __atomic_sub_fetch(ptr, 1, __ATOMIC_SEQ_CST)
+#endif
 
 #ifndef PIC
 /* entry for static linking */

src/pcm/pcm_route.c

@@ -766,7 +766,9 @@ static int strtochannel(const char *id, snd_pcm_chmap_t *chmap,
 	}
 }
 
+#ifndef DOC_HIDDEN
 #define MAX_CHMAP_CHANNELS 256
+#endif
 
 static int determine_chmap(snd_config_t *tt, snd_pcm_chmap_t **tt_chmap)
 {