static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)

{

    int payload_len;

    while (len >= 2) {

        switch (buf[1]) {

        case RTCP_SR:

            if (len < 16) {

                av_log(NULL, AV_LOG_ERROR, "Invalid length for RTCP SR packet\n");

                return AVERROR_INVALIDDATA;

            }

            payload_len = (AV_RB16(buf + 2) + 1) * 4;



            s->last_rtcp_ntp_time = AV_RB64(buf + 8);

            s->last_rtcp_timestamp = AV_RB32(buf + 16);

            if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) {

                s->first_rtcp_ntp_time = s->last_rtcp_ntp_time;

                if (!s->base_timestamp)

                    s->base_timestamp = s->last_rtcp_timestamp;

                s->rtcp_ts_offset = s->last_rtcp_timestamp - s->base_timestamp;

            }



            buf += payload_len;

            len -= payload_len;

            break;

        case RTCP_BYE:

            return -RTCP_BYE;

        default:

            return -1;

        }

    }

    return -1;

}

static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)

{

    int payload_len;

    while (len >= 2) {

        switch (buf[1]) {

        case RTCP_SR:

            if (len < 16) {

                av_log(NULL, AV_LOG_ERROR, "Invalid length for RTCP SR packet\n");

                return AVERROR_INVALIDDATA;

            }

            payload_len = (AV_RB16(buf + 2) + 1) * 4;



            s->last_rtcp_ntp_time = AV_RB64(buf + 8);

            s->last_rtcp_timestamp = AV_RB32(buf + 16);

            if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) {

                s->first_rtcp_ntp_time = s->last_rtcp_ntp_time;

                if (!s->base_timestamp)

                    s->base_timestamp = s->last_rtcp_timestamp;

                s->rtcp_ts_offset = s->last_rtcp_timestamp - s->base_timestamp;

            }



            buf += payload_len;

            len -= payload_len;

            break;

        case RTCP_BYE:

            return -RTCP_BYE;

        default:

            return -1;

        }

    }

    return -1;

}

    while (len >= 2) {             if (len < 16) {             payload_len = (AV_RB16(buf + 2) + 1) * 4;             buf += payload_len;             len -= payload_len;         default:             return -1;
static int FUNC_0(RTPDemuxContext *VAR_0, const unsigned char *VAR_1, int VAR_2)

{

    int VAR_3;

    while (VAR_2 >= 2) {

        switch (VAR_1[1]) {

        case RTCP_SR:

            if (VAR_2 < 16) {

                av_log(NULL, AV_LOG_ERROR, "Invalid length for RTCP SR packet\n");

                return AVERROR_INVALIDDATA;

            }

            VAR_3 = (AV_RB16(VAR_1 + 2) + 1) * 4;



            VAR_0->last_rtcp_ntp_time = AV_RB64(VAR_1 + 8);

            VAR_0->last_rtcp_timestamp = AV_RB32(VAR_1 + 16);

            if (VAR_0->first_rtcp_ntp_time == AV_NOPTS_VALUE) {

                VAR_0->first_rtcp_ntp_time = VAR_0->last_rtcp_ntp_time;

                if (!VAR_0->base_timestamp)

                    VAR_0->base_timestamp = VAR_0->last_rtcp_timestamp;

                VAR_0->rtcp_ts_offset = VAR_0->last_rtcp_timestamp - VAR_0->base_timestamp;

            }



            VAR_1 += VAR_3;

            VAR_2 -= VAR_3;

            break;

        case RTCP_BYE:

            return -RTCP_BYE;

        default:

            return -1;

        }

    }

    return -1;

}

static int FUNC_0(RTPDemuxContext *VAR_0, const unsigned char *VAR_1, int VAR_2)
{ int VAR_3; while (VAR_2 >= 2) { switch (VAR_1[1]) { case RTCP_SR:
if (VAR_2 < 16) { av_log(NULL, AV_LOG_ERROR, "Invalid length for RTCP SR packet\n"); return AVERROR_INVALIDDATA; } VAR_3 = (AV_RB16(VAR_1 + 2) + 1) * 4; VAR_0->last_rtcp_ntp_time = AV_RB64(VAR_1 + 8); VAR_0->last_rtcp_timestamp = AV_RB32(VAR_1 + 16); if (VAR_0->first_rtcp_ntp_time == AV_NOPTS_VALUE) { VAR_0->first_rtcp_ntp_time = VAR_0->last_rtcp_ntp_time; if (!VAR_0->base_timestamp)
VAR_0->base_timestamp = VAR_0->last_rtcp_timestamp; VAR_0->rtcp_ts_offset = VAR_0->last_rtcp_timestamp - VAR_0->base_timestamp; } VAR_1 += VAR_3; VAR_2 -= VAR_3; break; case RTCP_BYE:
return -RTCP_BYE; default:
return -1; } } return -1; }