source: svn/newcon3bcm2_21bu/dta/tests/unit_test/test_tuner.c @ 74

/***************************************************************************
 *     Copyright (c) 2012, Broadcom Corporation
 *     All Rights Reserved
 *     Confidential Property of Broadcom Corporation
 *
 *  THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE
 *  AGREEMENT  BETWEEN THE USER AND BROADCOM.  YOU HAVE NO RIGHT TO USE OR
 *  EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT.
 *
 * $brcm_Workfile: $
 * $brcm_Revision: $
 * $brcm_Date: $
 *
 * Module Description: tuner test module
 *
 * Revision History:
 *
 * $brcm_Log: $
 * 
 *
 ***************************************************************************/
#include "bstd.h"
#include "bkni.h"
#include "bdbg.h"

#include "serial.h"
#include "input_parser.h"
#include "bcrc32.h"

#include "bsettop.h"
#include "bsettop_tuner.h"
#include "bsettop_smessage.h"

BDBG_MODULE(test_tuner);

#define MAX_MSG_BUFFERS 0x400
#define MSG_BUFFER_SIZE 0x1000

unsigned char filter_msg_buffer[MSG_BUFFER_SIZE];

void *filter_msg_callback(void *context, size_t data_size)
{
    uint8_t *msg;
    uint32_t crc, i;

    msg = (uint8_t*)filter_msg_buffer;
    /* check syntax indicator to see if we need to do crc */
    if(0 == (msg[1] & 0x80)){
        crc = bcrc32(msg, data_size);
        if(0 != crc){
                BDBG_ERR(("crc error detected"));
        }
    }
    BDBG_ERR(("msg %hx size %u", msg[0], data_size));

//#define DUMP_MSG
#ifdef DUMP_MSG
        for (i = 0; i < 16; i++) {
                BKNI_Printf("[%3d]=0x%02x\n", i, msg[i]);
        }
#endif

    return msg;
}

static btuner_t                 tuner = NULL;
static btuner_params    tuner_params;
static smessage_stream_t        filter_msg = NULL;
static unsigned int                     freq_khz = 549000;      /* 549 MHz */

bool qam_tuner_init(void)
{
        if (tuner)
                return true;

        tuner = btuner_open(0);
        if (NULL == tuner) {
                BKNI_Printf("btuner_open failed");
                return false;
        }
        return true;
}

bool qam_tune(unsigned int freq)
{
        if (NULL == tuner) {
                BKNI_Printf("tuner is not initialized");
                return false;
        }

        btuner_params_init(&tuner_params, tuner);
        tuner_params.wait_for_lock = false;
        tuner_params.fecMode = eFEC_ANNEX_B;
        tuner_params.qamMode = eQAM_Scan;

        freq_khz = freq / 1000;
        if (btuner_tune(tuner, freq_khz * 1000, &tuner_params) < 0) {
                BKNI_Printf("btuner_tune failed\n");
                return false;
        }
        return true;
}

bool qam_get_status(void)
{
        btuner_status status;

        if (NULL == tuner) {
                BKNI_Printf("tuner is not initialized");
                return false;
        }

        btuner_get_status(tuner, &status);
        BKNI_Printf("tuner is %s on frequency %d KHz\n", status.lock ? "locked" : "not locked", freq_khz);
        return true;
}

bool qam_start_message(unsigned short pid)
{
        bresult bres;
        smessage_stream_params_t params;

        /* if started already */
        if (filter_msg)
                return true;

        filter_msg = smessage_open(smessage_format_psi);
        if (NULL == filter_msg) {
                BKNI_Printf("smessage_open failed");
                return false;
        }

        smessage_stream_params_init(&params, NULL);
        params.band = TUNER_BAND;
        params.pid = pid;

        params.buffer = filter_msg_buffer;
        params.buffer_size = MSG_BUFFER_SIZE;
        params.crc_disabled = true;
        params.data_ready_callback = filter_msg_callback;
        params.overflow = NULL;
        //params.priv = (void *)4;

        bres = smessage_start(&params, filter_msg);
        if (b_ok != bres)
        {
                BDBG_ERR(("%s:%d",__FILE__, __LINE__));
                smessage_close(filter_msg);
                filter_msg = NULL;      
                return false;
        }

        return true;
}

bool qam_stop_message(void)
{
        if (!filter_msg) {
                BKNI_Printf("message filtering is not started yet");
                return false;
        }
        smessage_stop(filter_msg);
        smessage_close(filter_msg);
        filter_msg = NULL;

        return true;
}