Revision 5198dfae src/urt_subscriber.c
| src/urt_subscriber.c | ||
|---|---|---|
| 48 | 48 |
/** |
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* @brief Initialize the nrt Subscriber. |
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* |
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* @param[in] subscriber Subscriber to initalize.
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* @param[in] subscriber The NRT subscriber to initialize. Must not be NULL.
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| 52 | 52 |
*/ |
| 53 | 53 |
void urtNrtSubscriberInit (urt_nrtsubscriber_t* subscriber) {return;}
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| 54 | 54 |
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/** |
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* @brief .
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* @brief Subscribes the subscriber to a topic.
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* |
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* @param[in] subscriber Subscriber to . |
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* @param[in] topic . |
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* @param[in] messages . |
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* @param[in] subscriber The NRT subscriber which shall subscribe to a topic. Must not be NULL. |
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* @param[in] topic The topic to subscribe to. Must not be NULL. |
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* @param[in] messages NULL terminated list of messages to contribute to the topic. |
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* Messages must not be associated to another topic. |
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* Once a message has been contributed, it cannot be removed later. |
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* May be NULL(no messages to contribute). |
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_SUBSCRIBE_TOPICSET if the subscriber is already associated to a topic. |
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*/ |
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urt_status_t urtNrtSubscriberSubscribe (urt_nrtsubscriber_t* subscriber, urt_topic_t* topic, urt_message_t* messages) {
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return URT_STATUS_OK; |
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} |
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/** |
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* @brief .
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* @brief Fetches the next message.
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* |
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* @param[in] subscriber .
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* @param[in] payload .
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* @param[in] bytes .
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* @param[in] latency .
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* @param[in] subscriber The NRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
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* @param[in] bytes Payload size in bytes.
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* @param[in] latency The latency can be returned by reference. May be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Retruns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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*/ |
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urt_status_t urtNrtSubscriberFetchNextMessage (urt_nrtsubscriber_t* subscriber, void* payload, size_t bytes, urt_delay_t* latency) {
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return URT_STATUS_OK; |
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} |
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/** |
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* @brief .
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* @brief Fetches the lates message.
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* |
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* @param[in] subscriber .
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* @param[in] payload .
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* @param[in] bytes .
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* @param[in] latency .
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* @param[in] subscriber The NRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
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* @param[in] bytes Payload size in bytes.
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* @param[in] latency The latency can be returned by reference. May be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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*/ |
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urt_status_t urtNrtSubscriberFetchLatestMessage (urt_nrtsubscriber_t* subscriber, void* payload, size_t bytes, urt_delay_t* latency) {
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return URT_STATUS_OK; |
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} |
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/** |
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* @brief .
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* @brief Unsubscribes from a subscriber.
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* |
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* @param[in] subscriber |
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* @param[in] subscriber The NRT subscriber to be unsubscribed. Must not be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on sucess. |
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* Returns URT_STATUS_UNSUBSCRIBE_NOTOPIC if the subscriber is not associated to a topic. |
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*/ |
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urt_status_t urtNrtSubscriberUnsubscribe (urt_nrtsubscriber_t* subscriber) {
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return URT_STATUS_OK; |
| ... | ... | |
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/** |
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* @brief .
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* @brief Initialize the srt Subscriber.
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* |
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* @param[in] subscriber . |
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* @param[in] subscriber The SRT subscriber to initialize. Must not be NULL.
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*/ |
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void urtSrtSubscriberInit(urt_srtsubscriber_t* subscriber) {return;}
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/** |
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* @brief . |
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* |
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* @param[in] subscriber . |
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* @param[in] topic . |
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* @param[in] message . |
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* @param[in] usefulnesscb . |
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* @param[in] cbparams . |
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* |
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* @return A status value. |
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* @brief Subscribes the subscriber to a topic. |
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* |
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* @param[in] subscriber The SRT subscriber which shall subscribe to a topic. Must not be NULL. |
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* @param[in] topic The topic to subscribe to. Must not be NULL. |
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* @param[in] message NULL terminated list of messages to contribute to the topic. |
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* Messages must not be associated to another topic. |
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* Once a message has been contributed, it cannot be removed later. |
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* May be NULL (no messages to contribute) |
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* @param[in] usefulnesscb Pointer to a function to calculate usefulness of a message. Must not be NULL. |
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* @param[in] cbparams Optional parameters for the usefulness callback. |
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* May be NULL if the callback expects no parameters. |
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* |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_SUBSCRIBE_TOPICSET if the subscriber is already associated to a topic. |
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*/ |
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urt_status_t urtSrtSubscriberSubscribe(urt_srtsubscriber_t* subscriber, urt_topic_t* topic, |
| 127 | 141 |
urt_message_t* message, urt_srtusefulnessfunc_t* usefulnesscb, void* cbparams) {return URT_STATUS_OK;}
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/** |
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* @brief .
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* @brief Fetches the next message.
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* |
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* @param[in] subscriber . |
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* @param[in] payload . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL. |
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload. |
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* @param[in] bytes Payload size in bytes. |
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* @param[in] latency The latency can be returned by reference. May be NULL. |
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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*/ |
| 138 | 155 |
urt_status_t urtSrtSubscriberFetchNextMessage(urt_srtsubscriber_t* subscriber, void* payload, |
| 139 | 156 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
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| 140 | 157 |
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/** |
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* @brief .
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* @brief Fetches the latest message.
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* |
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* @param[in] subscriber . |
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* @param[in] payload . |
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* @param[in] bytes . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
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* @param[in] bytes Payload size in bytes.
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* @param[in] latency The latency can be returned by reference. May be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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*/ |
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urt_status_t urtSrtSubscriberFetchLatestMessage(urt_srtsubscriber_t* subscriber, void* payload, |
| 152 | 171 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
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| 153 | 172 |
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/** |
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* @brief .
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* @brief Calculates the usefulness of the subscriber.
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* |
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* @param[in] subscriber . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] latency Latency (of a message) as argument to calculate usefulness.
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* |
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* @return A status value.
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* @return Returns the usefulness as a value within [0,1].
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*/ |
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urt_status_t urtSrtSubscriberCalculateUsefulness(urt_srtsubscriber_t* subscriber, urt_delay_t latency){return URT_STATUS_OK;}
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float urtSrtSubscriberCalculateUsefulness(urt_srtsubscriber_t* subscriber, urt_delay_t latency){return 0;}
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| 163 | 182 |
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/** |
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* @brief .
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* @brief Unsubscribes from a subscriber.
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* |
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* @param[in] subscriber . |
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* @param[in] subscriber The NRT subscriber to be unsubscribed. Must not be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on sucess. |
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* Returns URT_STATUS_UNSUBSCRIBE_NOTOPIC if the subscriber is not associated to a topic. |
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*/ |
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urt_status_t urtSrtSubscriberUnsubscribe(urt_srtsubscriber_t* subscriber){return URT_STATUS_OK;}
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| 172 | 192 |
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/** |
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* @brief .
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* @brief Initialize the FRT Subscriber.
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* |
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* @param[in] subscriber . |
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* |
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* @return A status value. |
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* @param[in] subscriber The SRT subscriber to initialize. Must not be NULL. |
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*/ |
| 181 | 199 |
void urtFrtSubscriberInit(urt_frtsubscriber_t* subscriber){return URT_STATUS_OK;}
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| 182 | 200 |
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/** |
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* @brief . |
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* |
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* @param[in] subscriber . |
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* @param[in] topic . |
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* @param[in] messages . |
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* @param[in] deadline . |
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* @param[in] jitter . |
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* |
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* @return A status value. |
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* @brief Subscribes the subscriber to a topic. |
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* |
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* @param[in] subscriber The NRT subscriber which shall subscribe to a topic. Must not be NULL. |
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* @param[in] topic The topic to subscribe to. Must not be NULL. |
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* @param[in] messages NULL terminated list of messages to contribute to the topic. |
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* Messages must not be associated to another topic. |
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* Once a message has been contributed, it cannot be removed later. |
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* May be NULL(no messages to contribute). |
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* @param[in] deadline Maximum latency to consume messages. A value of 0 indicates that latency is of no concern. |
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* @param[in] jitter Maximum allowed jitter (difference between maximum and minimum latency) when consuming messages. |
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* A value of 0 indicates that jitter is of no concern. |
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* |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_SUBSCRIBE_TOPICSET if the subscriber is already associated to a topic. |
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*/ |
| 194 | 217 |
urt_status_t urtFrtSubscriberSubscribe(urt_frtsubscriber_t* subscriber, urt_topic_t* topic, |
| 195 | 218 |
urt_message_t* messages, urt_delay_t deadline, urt_delay_t jitter){return URT_STATUS_OK;}
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| 196 | 219 |
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/** |
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* @brief .
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* @brief Fetches the next message.
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* |
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* @param[in] subscriber . |
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* @param[in] payload . |
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* @param[in] bytes . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
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* @param[in] bytes Payload size in bytes.
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* @param[in] latency The latency can be returned by reference. May be NULL.
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* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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| 206 | 231 |
*/ |
| 207 | 232 |
urt_status_t urtFrtSubscriberFetchNextMessage(urt_frtsubscriber_t* subscriber, void* payload, |
| 208 | 233 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
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| 209 | 234 |
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/** |
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* @brief .
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* @brief Fetches the latest message.
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* |
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* @param[in] subscriber . |
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* @param[in] payload . |
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* @param[in] bytes . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
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* @param[in] bytes Payload size in bytes.
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* @param[in] latency The latency can be returned by reference. May be NULL.
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| 217 | 242 |
* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
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| 219 | 246 |
*/ |
| 220 | 247 |
urt_status_t urtFrtSubscriberFetchLatestMessage(urt_frtsubscriber_t* subscriber, void* payload, |
| 221 | 248 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
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| 222 | 249 |
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| 223 | 250 |
/** |
| 224 |
* @brief .
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* @brief Calculates the validity from the subscriber.
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| 225 | 252 |
* |
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* @param[in] subscriber . |
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* @param[in] latency . |
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* @param[in] subscriber The FRT subscriber to calculate a validity for. Must not be NULL.
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* @param[in] latency Latency (of a message) as argument to calculate validity.
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| 228 | 255 |
* |
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* @return A status value.
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* @return Returns a boolean indicator whether the latency is fine.
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| 230 | 257 |
*/ |
| 231 | 258 |
bool urtFrtSubscriberCalculateValidity(urt_frtsubscriber_t* subscriber, urt_delay_t latency){return true;}
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| 232 | 259 |
|
| 233 | 260 |
/** |
| 234 |
* @brief .
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* @brief Unsubscribes from a subscriber.
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| 235 | 262 |
* |
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* @param[in] subscriber . |
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* @param[in] subscriber The NRT subscriber to be unsubscribed. Must not be NULL.
|
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| 237 | 264 |
* |
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* @return A status value. |
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* @return Returns URT_STATUS_OK on sucess. |
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* Returns URT_STATUS_UNSUBSCRIBE_NOTOPIC if the subscriber is not associated to a topic. |
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| 239 | 267 |
*/ |
| 240 | 268 |
urt_status_t urtFrtSubscriberUnsubscribe(urt_frtsubscriber_t* subscriber){return URT_STATUS_OK;}
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| 241 | 269 |
|
| 242 | 270 |
|
| 243 | 271 |
/** |
| 244 |
* @brief .
|
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* @brief Initialize the HRT Subscriber.
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| 245 | 273 |
* |
| 246 |
* @param[in] subscriber . |
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* @param[in] subscriber The HRT subscriber to initialize. Must not be NULL.
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| 247 | 275 |
*/ |
| 248 | 276 |
void urtHrtSubscriberInit(urt_hrtsubscriber_t* subscriber){return;}
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| 249 | 277 |
|
| 250 | 278 |
/** |
| 251 |
* @brief . |
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| 252 |
* |
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* @param[in] subscriber . |
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* @param[in] topic . |
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* @param[in] message . |
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* @param[in] deadline . |
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* @param[in] rate . |
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* @param[in] jitter . |
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* |
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* @return A status value. |
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* @brief Subscribes the subscriber to a topic. |
|
| 280 |
* |
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| 281 |
* @param[in] subscriber The NRT subscriber which shall subscribe to a topic. Must not be NULL. |
|
| 282 |
* @param[in] topic The topic to subscribe to. Must not be NULL. |
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* @param[in] messages NULL terminated list of messages to contribute to the topic. |
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* Messages must not be associated to another topic. |
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| 285 |
* Once a message has been contributed, it cannot be removed later. |
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* May be NULL(no messages to contribute). |
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* @param[in] deadline Maximum latency to consume messages. A value of 0 indicates that latency is of no concern. |
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* @param[in] rate Expected minimum rate of new messages (= maximum time between consecutive messages). |
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* A value of 0 indicates, that rate is of no concern. |
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| 290 |
* @param[in] jitter Maximum allowed jitter (difference between maximum and minimum latency) when consuming messages. |
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* A value of 0 indicates that jitter is of no concern. |
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* |
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| 293 |
* @return Returns URT_STATUS_OK on success. |
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* Returns URT_STATUS_SUBSCRIBE_TOPICSET if the subscriber is already associated to a topic. |
|
| 261 | 295 |
*/ |
| 262 | 296 |
urt_status_t urtHrtSubscriberSubscribe(urt_hrtsubscriber_t* subscriber, urt_topic_t* topic, |
| 263 | 297 |
urt_message_t* message, urt_delay_t deadline, urt_delay_t rate, urt_delay_t jitter){return URT_STATUS_OK;}
|
| 264 | 298 |
|
| 265 | 299 |
|
| 266 | 300 |
/** |
| 267 |
* @brief .
|
|
| 301 |
* @brief Fetches the next message.
|
|
| 268 | 302 |
* |
| 269 |
* @param[in] subscriber . |
|
| 270 |
* @param[in] payload . |
|
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* @param[in] bytes . |
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* @param[in] latency . |
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* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
|
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* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
|
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* @param[in] bytes Payload size in bytes.
|
|
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* @param[in] latency The latency can be returned by reference. May be NULL.
|
|
| 273 | 307 |
* |
| 274 |
* @return A status value. |
|
| 308 |
* @return Returns URT_STATUS_OK on success. |
|
| 309 |
* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
|
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* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
|
| 275 | 311 |
*/ |
| 276 | 312 |
urt_status_t urtHrtSubscriberFetchNextMessage(urt_hrtsubscriber_t* subscriber, void* payload, |
| 277 | 313 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
|
| 278 | 314 |
|
| 279 | 315 |
|
| 280 | 316 |
/** |
| 281 |
* @brief .
|
|
| 317 |
* @brief Fetches the latest message.
|
|
| 282 | 318 |
* |
| 283 |
* @param[in] subscriber . |
|
| 284 |
* @param[in] payload . |
|
| 285 |
* @param[in] bytes . |
|
| 286 |
* @param[in] latency . |
|
| 319 |
* @param[in] subscriber The SRT subscriber that shall fetch the message. Must not be NULL.
|
|
| 320 |
* @param[in] payload Pointer where to copy the payload to. May be NULL for messages without payload.
|
|
| 321 |
* @param[in] bytes Payload size in bytes.
|
|
| 322 |
* @param[in] latency The latency can be returned by reference. May be NULL.
|
|
| 287 | 323 |
* |
| 288 |
* @return A status value. |
|
| 324 |
* @return Returns URT_STATUS_OK on success. |
|
| 325 |
* Returns URT_STATUS_FETCH_NOTOPIC if the subscriber is not associated to a topic. |
|
| 326 |
* Returns URT_STATUS_FETCH_NOMESSAGE if there is no new message to fetch. |
|
| 289 | 327 |
*/ |
| 290 | 328 |
urt_status_t urtHrtSubscriberFetchLatestMessage(urt_hrtsubscriber_t* subscriber, void* payload, |
| 291 | 329 |
size_t bytes, urt_delay_t* latency){return URT_STATUS_OK;}
|
| 292 | 330 |
|
| 293 | 331 |
/** |
| 294 |
* @brief .
|
|
| 332 |
* @brief Unsubscribes from a subscriber.
|
|
| 295 | 333 |
* |
| 296 |
* @param[in] subscriber . |
|
| 334 |
* @param[in] subscriber The HRT subscriber to be unsubscribed. Must not be NULL.
|
|
| 297 | 335 |
* |
| 298 |
* @return A status value. |
|
| 336 |
* @return Returns URT_STATUS_OK on sucess. |
|
| 337 |
* Returns URT_STATUS_UNSUBSCRIBE_NOTOPIC if the subscriber is not associated to a topic. |
|
| 299 | 338 |
*/ |
| 300 | 339 |
urt_status_t urtHrtSubscriberUnsubscribe(urt_hrtsubscriber_t* subscriber){return URT_STATUS_OK;}
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