---

#ifdef MY_CODE
/**
 * In-place runtime reconfiguration of pjsua_var.mconf fields.
 * Updates all internal structures (master_port, ports[0], and delay_buf)
 * to 8kHz/160SPF on the fly without freeing the main context memory.
 */
static pj_status_t pjmedia_conf_adapt_to_stream_rate(pjmedia_conf *conf, 
                                                     struct conf_port *stream_conf_port)
{
    unsigned old_clock_rate;
    unsigned ptime;
    pj_str_t passive_name = { "Master/sound", 12 };
    pj_status_t status;

    if (!conf || !stream_conf_port) {
        return PJ_EINVAL;
    }

    old_clock_rate = conf->clock_rate;

    // Check if the conference grid parameters actually need alignment
    if (old_clock_rate != stream_conf_port->clock_rate) {
        
        printf("[INPLACE_SWAP] Mutating fields: %u Hz -> %u Hz (SPF: %u)\n", 
               old_clock_rate, stream_conf_port->clock_rate, stream_conf_port->samples_per_frame);

        // Step 1: Hardware safety lock
        zephyr_i2s_stop(1); // Stop RX
        zephyr_i2s_stop(0); // Stop TX
        k_msleep(5);

        // Step 2: Apply physical clock modification to MCUX SAI & WM8960 Codec registers
        int hw_ret = zephyr_i2s_set_rate(stream_conf_port->clock_rate);
        if (hw_ret < 0) {
            printf("[INPLACE_SWAP] ERROR: Low-level hardware shift failed: %d\n", hw_ret);
            return PJ_EINVALIDOP;
        }

        // Step 3: Mutate main bridge parameters in place
        conf->clock_rate = stream_conf_port->clock_rate;
        conf->channel_count = stream_conf_port->channel_count;
        conf->samples_per_frame = stream_conf_port->samples_per_frame;

        // Step 4: Mutate Master Port internal audio detail parameters
        if (conf->master_port) {
            pjmedia_audio_format_detail *master_afd;
            master_afd = pjmedia_format_get_audio_format_detail(&conf->master_port->info.fmt, 1);
            if (master_afd) {
                master_afd->clock_rate = conf->clock_rate;
                master_afd->samples_per_frame = conf->samples_per_frame;
                master_afd->channel_count = conf->channel_count;
            }
            // Update top-level info values as well
            conf->master_port->info.fmt.det.aud.clock_rate = conf->clock_rate;
            conf->master_port->info.fmt.det.aud.frame_time_usec = 20000; // 20ms
        }

        // Step 5: Mutate Sound Card Passive Port (Port 0) values
        if (conf->ports && conf->ports[0]) {
            struct conf_port *snd_port = conf->ports[0];
            
            snd_port->clock_rate = conf->clock_rate;
            snd_port->samples_per_frame = conf->samples_per_frame;
            snd_port->channel_count = conf->channel_count;

            // Re-allocate adjustment level buffer to reflect new sample processing boundaries
            // (Old 16kHz buffer size was 320 words, new is 160. Memory is safe to reuse)
            
            // Step 6: Destructive swap of the inner delay_buf instance only.
            // Jitter buffers MUST be fresh because their math calculations rely on fixed sample counts.
            if (snd_port->delay_buf) {
                pjmedia_delay_buf_destroy(snd_port->delay_buf);
                snd_port->delay_buf = NULL;
            }

            ptime = conf->samples_per_frame * 1000 / conf->clock_rate / conf->channel_count;
            status = pjmedia_delay_buf_create(snd_port->pool, passive_name.ptr, 
                                              conf->clock_rate,
                                              conf->samples_per_frame,
                                              conf->channel_count,
                                              RX_BUF_COUNT * ptime,
                                              0,
                                              &snd_port->delay_buf);
            if (status != PJ_SUCCESS) {
                printf("[INPLACE_SWAP] ERROR: Jitter buffer rebuild failed: %d\n", status);
                return status;
            }
        }

        printf("[INPLACE_SWAP] Field modification complete. All layers synced to %u Hz!\n", conf->clock_rate);
    }

    return PJ_SUCCESS;
}
#endif