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linuxdvb: use the v5 property interface for statistics

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This commit is contained in:
beralt 2013-11-25 11:19:08 +01:00
parent d081c84865
commit aed4f63151
1 changed files with 58 additions and 9 deletions
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67
src/input/mpegts/linuxdvb/linuxdvb_frontend.c
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@ -451,6 +451,8 @@ linuxdvb_frontend_monitor ( void *aux )
mpegts_pid_t *mp;
fe_status_t fe_status;
signal_state_t status;
struct dtv_property fe_properties[6];
struct dtv_properties dtv_prop;
lfe->mi_display_name((mpegts_input_t*)lfe, buf, sizeof(buf));
tvhtrace("linuxdvb", "%s - checking FE status", buf);
@ -533,15 +535,62 @@ linuxdvb_frontend_monitor ( void *aux )
}
/* Statistics */
if (!ioctl(lfe->lfe_fe_fd, FE_READ_SIGNAL_STRENGTH, &u16))
mmi->mmi_stats.signal = (u16 * 100) / 0xffff;
if (!ioctl(lfe->lfe_fe_fd, FE_READ_BER, &u32))
mmi->mmi_stats.ber = u32;
/* SNR is reported in 0.1 dB resolution */
if (!ioctl(lfe->lfe_fe_fd, FE_READ_SNR, &u16))
mmi->mmi_stats.snr = u16 / 10;
if (!ioctl(lfe->lfe_fe_fd, FE_READ_UNCORRECTED_BLOCKS, &u32))
mmi->mmi_stats.unc = u32;
/* try the v5 API first */
fe_properties[0].cmd = DTV_STAT_SIGNAL_STRENGTH;
/* BER */
fe_properties[1].cmd = DTV_STAT_PRE_ERROR_BIT_COUNT;
fe_properties[2].cmd = DTV_STAT_PRE_TOTAL_BIT_COUNT;
fe_properties[3].cmd = DTV_STAT_CNR;
/* PER */
fe_properties[4].cmd = DTV_STAT_ERROR_BLOCK_COUNT;
fe_properties[5].cmd = DTV_STAT_TOTAL_BLOCK_COUNT;
dtv_prop.num = 6;
dtv_prop.props = fe_properties;
if(!ioctl(lfe->lfe_fe_fd, FE_GET_PROPERTY, &dtv_prop)) {
/* use v5 API */
if(fe_properties[0].u.st.len > 0) {
if(fe_properties[0].u.st.stat[0].scale == FE_SCALE_RELATIVE)
mmi->mmi_stats.signal = (fe_properties[0].u.st.stat[0].uvalue * 100) / 0xffff;
/* TODO: handle other scales */
}
/* Calculate BER from PRE_ERROR and TOTAL_BIT_COUNT */
if(fe_properties[1].u.st.len > 0) {
if(fe_properties[1].u.st.stat[0].scale == FE_SCALE_COUNTER)
u16 = fe_properties[1].u.st.stat[0].uvalue;
}
if(fe_properties[2].u.st.len > 0) {
if(fe_properties[2].u.st.stat[0].scale == FE_SCALE_COUNTER)
mmi->mmi_stats.ber = u16 / fe_properties[2].u.st.stat[0].uvalue;
}
if(fe_properties[3].u.st.len > 0) {
/* note that decibel scale means 0.0001 dB units */
/* TODO: snr is not unsigned, but signed! */
if(fe_properties[3].u.st.stat[0].scale == FE_SCALE_DECIBEL)
mmi->mmi_stats.snr = fe_properties[3].u.st.stat[0].uvalue;
/* TODO: handle other scales */
}
/* Calculate PER from PRE_ERROR and TOTAL_BIT_COUNT */
if(fe_properties[4].u.st.len > 0) {
if(fe_properties[4].u.st.stat[0].scale == FE_SCALE_COUNTER)
u16 = fe_properties[4].u.st.stat[0].uvalue;
}
if(fe_properties[5].u.st.len > 0) {
if(fe_properties[5].u.st.stat[0].scale == FE_SCALE_COUNTER)
mmi->mmi_stats.unc = u16 / fe_properties[5].u.st.stat[0].uvalue;
}
} else {
/* use old v3 API */
if (!ioctl(lfe->lfe_fe_fd, FE_READ_SIGNAL_STRENGTH, &u16))
mmi->mmi_stats.signal = u16;
if (!ioctl(lfe->lfe_fe_fd, FE_READ_BER, &u32))
mmi->mmi_stats.ber = u32;
if (!ioctl(lfe->lfe_fe_fd, FE_READ_SNR, &u16))
mmi->mmi_stats.snr = u16;
if (!ioctl(lfe->lfe_fe_fd, FE_READ_UNCORRECTED_BLOCKS, &u32))
mmi->mmi_stats.unc = u32;
}
}
static void *