lv_on_push_streaming_cmd_cb - - Alibaba Cloud Documentation Center

Sends control commands when a link is connected to the URL that is used to push live streams or play on-premises videos.

This operation is a callback function.

Description

typedef int (*lv_on_push_streaming_cmd_cb)(const lv_device_auth_s *auth, const lv_on_push_stream_cmd_param_s *param);

Parameter	Type	Description
auth	lv_device_auth_s *	The device information for authentication.
param	const lv_on_push_stream_cmd_param_s *	The additional parameters, such as a command to pause the playback of local videos.

Sample code

Note

The sample code is provided for reference only. Refer to the complete code in the SDK.

// In the sample code, a callback function named on_push_streaming_cmd_cb is defined to implement lv_on_push_streaming_cmd_cb and a callback function named stopPushStreamingCallback is defined to implement lv_start_push_streaming_cb.
lv_on_push_streaming_cmd_cb = on_push_streaming_cmd_cb;

static int on_push_streaming_cmd_cb(const lv_device_auth_s *auth, const lv_on_push_stream_cmd_param_s *param) {
    printf("on_push_streaming_cmd_cb service_id:%d, cmd:%d %d\n", param->common.service_id, param->common.cmd_type, param->seek.timestamp);

    DummyIpcMediaParam ipc_param = {0};
    ipc_param.service_id = param->common.service_id;
    if (param->common.cmd_type == LV_LIVE_REQUEST_I_FRAME) {
        // Forcibly generate an I-frame for live stream.
    } else if (param->common.cmd_type == LV_STORAGE_RECORD_SEEK) {
        // Find the playback of a specific timestamp.
    } else if (param->common.cmd_type == LV_STORAGE_RECORD_PAUSE) {
        // Pause the playback of local videos.
    } else if (param->common.cmd_type == LV_STORAGE_RECORD_UNPAUSE) {
        // Resume the playback of local videos.
    } else if (param->common.cmd_type == LV_STORAGE_RECORD_START) {
        // Start the playback of local videos.
    } else if (param->common.cmd_type == LV_STORAGE_RECORD_SET_PARAM) {
         // Change the speed of the playback of local videos.
    }

    return 0;
}