- added auto-timestamp mode for the port.

snd_seq_port_info_get/set_timestamping()
    snd_seq_port_info_get/set_timestamp_real()
    snd_seq_port_info_get/set_timestamp_queue()
- increased the protocol version to 1.0.1.

include/seq.h

@@ -259,6 +259,9 @@ int snd_seq_port_info_get_synth_voices(const snd_seq_port_info_t *info);
 int snd_seq_port_info_get_read_use(const snd_seq_port_info_t *info);
 int snd_seq_port_info_get_write_use(const snd_seq_port_info_t *info);
 int snd_seq_port_info_get_port_specified(const snd_seq_port_info_t *info);
+int snd_seq_port_info_get_timestamping(const snd_seq_port_info_t *info);
+int snd_seq_port_info_get_timestamp_real(const snd_seq_port_info_t *info);
+int snd_seq_port_info_get_timestamp_queue(const snd_seq_port_info_t *info);
 
 void snd_seq_port_info_set_client(snd_seq_port_info_t *info, int client);
 void snd_seq_port_info_set_port(snd_seq_port_info_t *info, int port);
@@ -270,6 +273,9 @@ void snd_seq_port_info_set_midi_channels(snd_seq_port_info_t *info, int channels
 void snd_seq_port_info_set_midi_voices(snd_seq_port_info_t *info, int voices);
 void snd_seq_port_info_set_synth_voices(snd_seq_port_info_t *info, int voices);
 void snd_seq_port_info_set_port_specified(snd_seq_port_info_t *info, int val);
+void snd_seq_port_info_set_timestamping(snd_seq_port_info_t *info, int enable);
+void snd_seq_port_info_set_timestamp_real(snd_seq_port_info_t *info, int realtime);
+void snd_seq_port_info_set_timestamp_queue(snd_seq_port_info_t *info, int queue);
 
 int snd_seq_create_port(snd_seq_t *handle, snd_seq_port_info_t *info);
 int snd_seq_delete_port(snd_seq_t *handle, int port);

src/seq/seq.c

@@ -1060,6 +1060,39 @@ int snd_seq_port_info_get_port_specified(const snd_seq_port_info_t *info)
 	return (info->flags & SNDRV_SEQ_PORT_FLG_GIVEN_PORT) ? 1 : 0;
 }
 
+/**
+ * \brief Get the time-stamping mode of the given port in a port_info container
+ * \param info port_info container
+ * \return 1 if the port updates timestamps of incoming events
+ */
+int snd_seq_port_info_get_port_timestamping(const snd_seq_port_info_t *info)
+{
+	assert(info);
+	return (info->flags & SNDRV_SEQ_PORT_FLG_TIMESTAMP) ? 1 : 0;
+}
+
+/**
+ * \brief Get whether the time-stamping of the given port is real-time mode
+ * \param info port_info container
+ * \return 1 if the time-stamping is in the real-time mode
+ */
+int snd_seq_port_info_get_port_timestamp_real(const snd_seq_port_info_t *info)
+{
+	assert(info);
+	return (info->flags & SNDRV_SEQ_PORT_FLG_TIME_REAL) ? 1 : 0;
+}
+
+/**
+ * \brief Get the queue id to update timestamps
+ * \param info port_info container
+ * \return the queue id to get the timestamps
+ */
+int snd_seq_port_info_get_port_timestamp_queue(const snd_seq_port_info_t *info)
+{
+	assert(info);
+	return info->time_queue;
+}
+
 /**
  * \brief Set the client id of a port_info container
  * \param info port_info container
@@ -1173,6 +1206,45 @@ void snd_seq_port_info_set_port_specified(snd_seq_port_info_t *info, int val)
 		info->flags &= ~SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
 }
 
+/**
+ * \brief Set the time-stamping mode of the given port
+ * \param info port_info container
+ * \param enable non-zero if updating the timestamps of incoming events
+ */
+void snd_seq_port_info_set_port_timestamping(snd_seq_port_info_t *info, int enable)
+{
+	assert(info);
+	if (enable)
+		info->flags |= SNDRV_SEQ_PORT_FLG_TIMESTAMP;
+	else
+		info->flags &= ~SNDRV_SEQ_PORT_FLG_TIMESTAMP;
+}
+
+/**
+ * \brief Set whether the timestime is updated in the real-time mode
+ * \param info port_info container
+ * \param enable non-zero if updating the timestamps in real-time mode
+ */
+void snd_seq_port_info_set_port_timestamp_real(snd_seq_port_info_t *info, int enable)
+{
+	assert(info);
+	if (enable)
+		info->flags |= SNDRV_SEQ_PORT_FLG_TIME_REAL;
+	else
+		info->flags &= ~SNDRV_SEQ_PORT_FLG_TIME_REAL;
+}
+
+/**
+ * \brief Set the queue id for timestamping
+ * \param info port_info container
+ * \param queue the queue id to get timestamps
+ */
+void snd_seq_port_info_set_port_timestamp_queue(snd_seq_port_info_t *info, int queue)
+{
+	assert(info);
+	info->time_queue = queue;
+}
+
 
 /**
  * \brief create a sequencer port on the current client

src/seq/seq_hw.c

@@ -31,7 +31,7 @@ const char *_snd_module_seq_hw = "";
 
 #define SNDRV_FILE_SEQ		"/dev/snd/seq"
 #define SNDRV_FILE_ALOADSEQ	"/dev/aloadSEQ"
-#define SNDRV_SEQ_VERSION_MAX	SNDRV_PROTOCOL_VERSION(1, 0, 0)
+#define SNDRV_SEQ_VERSION_MAX	SNDRV_PROTOCOL_VERSION(1, 0, 1)
 
 typedef struct {
 	int fd;