| 267 | } |
| 268 | |
| 269 | UInt32 MPEGTS::ParseNAL(SubstreamMap& reader, const UInt8* data, UInt32 size) { |
| 270 | |
| 271 | // Frame size error |
| 272 | UInt32 available = 0; |
| 273 | UInt8 offset = (*data==0x17 && *(data+1)==0x00)? 11 : 5; // (to work with FMLE) |
| 274 | if (size<offset) |
| 275 | return available; |
| 276 | |
| 277 | const UInt8* cur(data + offset); |
| 278 | const UInt8* end(data + size); |
| 279 | UInt8 twoBytesHeader = (*data==0x17 && *(data+1)==0x00) ? 1 : 0; |
| 280 | |
| 281 | // Parse each NALU |
| 282 | while((end-cur) > (twoBytesHeader ? 2 : 4)) { |
| 283 | |
| 284 | if (*cur++ != 0x00) { |
| 285 | WARN("H264 NALU Stream first byte not expected : ", *(cur-1)) |
| 286 | Logs::Dump("MPEGTS NALU with wrong first byte", data, size); |
| 287 | break; |
| 288 | } |
| 289 | |
| 290 | // Get size to read |
| 291 | UInt32 toRead = *cur++; |
| 292 | if (!twoBytesHeader) { |
| 293 | toRead <<= 16; |
| 294 | toRead += *cur++ << 8; |
| 295 | toRead += *cur++; |
| 296 | } |
| 297 | |
| 298 | if (toRead > (end-cur)) { |
| 299 | WARN("H264 NALU Stream size too long : ", toRead) |
| 300 | Logs::Dump("MPEGTS too long NALU", data, size); |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | reader.addSub(cur-data, toRead); |
| 305 | cur += toRead-1; |
| 306 | |
| 307 | // Go to next NALU (two bytes header? need to ignore 0x01 byte) |
| 308 | if ((end-cur) > (1 + twoBytesHeader)) |
| 309 | cur += 1 + twoBytesHeader; |
| 310 | } |
| 311 | |
| 312 | // No NALU founded |
| 313 | available = reader.totalSize(); |
| 314 | if (available == 0) |
| 315 | return available; |
| 316 | |
| 317 | return available + reader.count()*3; // Add 3 bytes for each NALU start codes |
| 318 | } |
| 319 | |
| 320 | UInt32 MPEGTS::ParseAudio(SubstreamMap& reader, const UInt8* data, UInt32 size) { |
| 321 | |