diff options
| -rw-r--r-- | etisnoop.cpp | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/etisnoop.cpp b/etisnoop.cpp index 98371f0..182fb87 100644 --- a/etisnoop.cpp +++ b/etisnoop.cpp @@ -730,6 +730,9 @@ int eti_analyse(eti_analyse_config_t& config) printf("Watermark:\n %s\n", watermark.c_str()); } + // remove elements from fig06_key_la map container + fig06_key_la.clear(); + return 0; } @@ -1163,6 +1166,272 @@ void decodeFIG(FIGalyser &figs, } } break; + case 21: // FIG 0/21 + { + float freq; + unsigned int ifreq; + unsigned long long key; + unsigned short RegionId, Id_field; + unsigned char i = 1, j, k, Length_FI_list, RandM, Length_Freq_list, Control_field; + unsigned char Control_field_trans_mode, Id_field2; + char tmpbuf[256]; + bool Continuity_flag; + + while (i < (figlen - 1)) { + // iterate over frequency information + // decode RegionId, Length of FI list + RegionId = (f[i] << 3) | (f[i+1] >> 5); + Length_FI_list = (f[i+1] & 0x1F); + sprintf(desc, "RegionId=0x%03x", RegionId); + printbuf(desc, indent+1, NULL, 0); + i += 2; + if ((i + Length_FI_list) <= figlen) { + j = i; + while ((j + 2) < (i + Length_FI_list)) { + // iterate over FI list x + // decode Id field, R&M, Continuity flag, Length of Freq list + Id_field = (f[j] << 8) | f[j+1]; + RandM = f[j+2] >> 4; + Continuity_flag = (f[j+2] >> 3) & 0x01; + Length_Freq_list = f[j+2] & 0x07; + sprintf(desc, "Id_field="); + switch (RandM) { + case 0x0: + case 0x1: + strcat(desc, "EId"); + break; + case 0x6: + strcat(desc, "DRM Service Id"); + break; + case 0x8: + strcat(desc, "RDS PI"); + break; + case 0x9: + case 0xa: + case 0xc: + strcat(desc, "Dummy"); + break; + case 0xe: + strcat(desc, "AMSS Service Id"); + break; + default: + strcat(desc, "invalid"); + break; + } + sprintf(tmpbuf, "=0x%04x, R&M=0x%1x", Id_field, RandM); + strcat(desc, tmpbuf); + switch (RandM) { + case 0x0: + strcat(desc, "=DAB ensemble, no local windows"); + break; + case 0x6: + strcat(desc, "=DRM"); + break; + case 0x8: + strcat(desc, "=FM with RDS"); + break; + case 0x9: + strcat(desc, "=FM without RDS"); + break; + case 0xa: + strcat(desc, "=AM (MW in 9 kHz steps & LW)"); + break; + case 0xc: + strcat(desc, "=AM (MW in 5 kHz steps & SW)"); + break; + case 0xe: + strcat(desc, "=AMSS"); + break; + default: + strcat(desc, "=Rfu"); + break; + } + sprintf(tmpbuf, ", Continuity flag=%d", Continuity_flag); + strcat(desc, tmpbuf); + if ((oe == 0) || ((oe == 1) && (RandM != 0x6) && \ + ((RandM < 0x8) || (RandM > 0xa)) && (RandM != 0xc) && (RandM != 0xe))) { + if (Continuity_flag == 0) { + switch (RandM) { + case 0x0: + case 0x1: + strcat(desc, "=continuous output not expected"); + break; + case 0x6: + strcat(desc, "=no compensating time delay on DRM audio signal"); + break; + case 0x8: + case 0x9: + strcat(desc, "=no compensating time delay on FM audio signal"); + break; + case 0xa: + case 0xc: + case 0xe: + strcat(desc, "=no compensating time delay on AM audio signal"); + break; + default: + strcat(desc, "=Rfu"); + break; + } + } + else { // Continuity_flag == 1 + switch (RandM) { + case 0x0: + case 0x1: + strcat(desc, "=continuous output possible"); + break; + case 0x6: + strcat(desc, "=compensating time delay on DRM audio signal"); + break; + case 0x8: + case 0x9: + strcat(desc, "=compensating time delay on FM audio signal"); + break; + case 0xa: + case 0xc: + case 0xe: + strcat(desc, "=compensating time delay on AM audio signal"); + break; + default: + strcat(desc, "=Rfu"); + break; + } + } + } + else { // oe == 1 + strcat(desc, "=reserved for future addition"); + } + key = ((unsigned long long)oe << 32) | ((unsigned long long)pd << 31) | \ + ((unsigned long long)RegionId << 20) | ((unsigned long long)Id_field << 4) | \ + (unsigned long long)RandM; + sprintf(tmpbuf, ", database key=0x%09llx", key); + // CEI Change Event Indication + if (Length_Freq_list == 0) { + strcat(tmpbuf, ", CEI"); + } + strcat(desc, tmpbuf); + printbuf(desc, indent+2, NULL, 0); + j += 3; // add header + + k = j; + switch (RandM) { + case 0x0: + case 0x1: + while((k + 2) < (j + Length_Freq_list)) { + // iteration over Freq list + ifreq = (((unsigned int)(f[k] & 0x07) << 16) | ((unsigned int)f[k+1] << 8) | (unsigned int)f[k+2]) * 16; + if (ifreq != 0) { + Control_field = (f[k] >> 3); + Control_field_trans_mode = (Control_field >> 1) & 0x07; + if ((Control_field & 0x10) == 0) { + sprintf(desc, "%d KHz, ", ifreq); + if ((Control_field & 0x01) == 0) { + strcat(desc, "geographically adjacent area, "); + } + else { // (Control_field & 0x01) == 1 + strcat(desc, "no geographically adjacent area, "); + } + if (Control_field_trans_mode == 0) { + strcat(desc, "no transmission mode signalled"); + } + else if (Control_field_trans_mode <= 4) { + sprintf(tmpbuf, "transmission mode %d", Control_field_trans_mode); + strcat(desc, tmpbuf); + } + else { // Control_field_trans_mode > 4 + sprintf(tmpbuf, "invalid transmission mode 0x%x", Control_field_trans_mode); + strcat(desc, tmpbuf); + } + } + else { // (Control_field & 0x10) == 0x10 + sprintf(desc, "%d KHz, invalid Control field b23 0x%x", ifreq, Control_field); + } + } + else { + sprintf(desc, "Frequency not to be used (0)"); + } + printbuf(desc, indent+3, NULL, 0); + k += 3; + } + break; + case 0x8: + case 0x9: + case 0xa: + while(k < (j + Length_Freq_list)) { + // iteration over Freq list + if (f[k] != 0) { // freq != 0 + if (RandM == 0xa) { + if (f[k] < 16) { + ifreq = (144 + ((unsigned int)f[k] * 9)); + } + else { // f[k] >= 16 + ifreq = (387 + ((unsigned int)f[k] * 9)); + } + sprintf(desc, "%d KHz", ifreq); + } + else { // RandM == 8 or 9 + freq = (87.5 + ((float)f[k] * 0.1)); + sprintf(desc, "%.1f MHz", freq); + } + } + else { + sprintf(desc, "Frequency not to be used (0)"); + } + printbuf(desc, indent+3, NULL, 0); + k++; + } + break; + case 0xc: + while((k + 1) < (j + Length_Freq_list)) { + // iteration over Freq list + ifreq = (((unsigned int)f[k] << 8) | (unsigned int)f[k+1]) * 5; + if (ifreq != 0) { + sprintf(desc, "%d KHz", ifreq); + } + else { + sprintf(desc, "Frequency not to be used (0)"); + } + printbuf(desc, indent+3, NULL, 0); + k += 2; + } + break; + case 0x6: + case 0xe: + while((k + 2) < (j + Length_Freq_list)) { + // iteration over Freq list + Id_field2 = f[k]; + ifreq = ((((unsigned int)f[k+1] & 0x7f) << 8) | (unsigned int)f[k+2]); + if (ifreq != 0) { + sprintf(desc, "%d KHz", ifreq); + } + else { + sprintf(desc, "Frequency not to be used (0)"); + } + if (RandM == 0x6) { + sprintf(tmpbuf, ", DRM Service Id 0x%02x", Id_field2); + strcat(desc, tmpbuf); + } + else if (RandM == 0xe) { + sprintf(tmpbuf, ", AMSS Service Id 0x%02x", Id_field2); + strcat(desc, tmpbuf); + } + if ((f[k+1] & 0x80) == 0x80) { + sprintf(tmpbuf, ", invalid Rfu b15 set to 1 instead of 0"); + strcat(desc, tmpbuf); + } + printbuf(desc, indent+3, NULL, 0); + k += 3; + } + break; + default: + break; + } + j += Length_Freq_list; + } + i += Length_FI_list; + } + } + } + break; } } break; |