Publish Audio - IoT SDK

The Audio publishing feature allows IoT devices to stream audio content into meetings, enabling real-time audio communication and integration with your VideoSDK-powered applications.

startPublishAudio()

• Initiates publishing audio data from your IoT device into the active meeting session.

This function requires one parameter:

• publisherId: Your unique publish identifier. This can be set to NULL or an empty string, in which case the SDK will generate a random publish ID for you.

note

• You must call the init() method before invoking startPublishAudio(). If not, the function will return an INIT_NOT_CALLED result code.

• Only one publish task can run at a time. If another publsih task is already active, calling this function again will result in a TASK_ALREADY_STARTED result code.

caution

The subscriberId and publisherId must be unique for each participant in the meeting. If a duplicate ID is detected, the SDK will return a DUPLICATE_ID result code. To resolve this please recheck your (subscriberId and publisherId).

Example

#include "videosdk.h"
#include "esp_log.h"
char *subscriberId;
void app_main(){
// Call the function from videosdk.c and pass publisherId if required
  result_t publish_result = startPublishAudio("your publisherId");
  ESP_LOGI("Publish Result: %d", publish_result);
}

stopPublishAudio

• The stopPublishAudio() function stops audio publishing and removes the peer from the active meeting session.
• When invoked, it halts all ongoing audio publishing processes and ensures that the peer associated with the audio stream is cleanly disconnected from the meeting.

Example

#include "videosdk.h"
#include "esp_log.h"
void app_main(){
// simply call the function present in videosdk.c file
  result_t stop_publish_result = stopPublishAudio();
  ESP_LOGI("Stop Publish Result: %d", stop_publish_result);
}

API Reference

The API references for all the methods utilized in this guide are provided below.

• startPublishAudio
• stopPublishAudio