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detect unsuported h265 video packets

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F. Duncanh
2023-10-26 10:30:31 -04:00
parent 282ff3bdbd
commit ea942b5a05
1 changed files with 23 additions and 1 deletions
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24
lib/raop_rtp_mirror.c
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@@ -195,6 +195,7 @@ raop_rtp_mirror_thread(void *arg)
uint64_t ntp_timestamp_local = 0;
unsigned char nal_start_code[4] = { 0x00, 0x00, 0x00, 0x01 };
bool logger_debug = (logger_get_level(raop_rtp_mirror->logger) >= LOGGER_DEBUG);
bool h265_video_detected = false;
while (1) {
fd_set rfds;
@@ -442,7 +443,22 @@ raop_rtp_mirror_thread(void *arg)
break;
}
int nalu_type = payload_decrypted[nalu_size] & 0x1f;
int ref_idc = (payload_decrypted[nalu_size] >> 5);
int ref_idc = (payload_decrypted[nalu_size] >> 5);
/* check for unsupported h265 video (sometimes sent by macOS in high-def screen mirroring) */
if (payload_decrypted[nalu_size + 1] == 0x01) {
switch (payload_decrypted[nalu_size]) {
case 0x28: // h265 IDR type 20 NAL
case 0x02: // h265 non-IDR type 1 NAL
ref_idc = 0;
h265_video_detected = true;
break;
default:
break;
}
if (h265_video_detected) {
break;
}
}
switch (nalu_type) {
case 14: /* Prefix NALu , seen before all VCL Nalu's in AirMyPc */
case 5: /*IDR, slice_layer_without_partitioning */
@@ -492,6 +508,12 @@ raop_rtp_mirror_thread(void *arg)
}
nalu_size += nc_len;
}
if (h265_video_detected) {
logger_log(raop_rtp_mirror->logger, LOGGER_ERR,
"unsupported h265 video detected");
free (payload_out);
break;
}
if (nalu_size != payload_size) valid_data = false;
if(!valid_data) {
logger_log(raop_rtp_mirror->logger, LOGGER_DEBUG, "nalu marked as invalid");