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Some RTMP timestamp issues found and fixed, as well as some RTMP Parser fixes (but now segfaults? Needs more testing...)

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This commit is contained in:
Thulinma 2011-08-21 18:45:59 +02:00
parent d6f8dfa24e
commit 693b9e47e5
2 changed files with 9 additions and 6 deletions
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14
util/rtmpchunks.cpp
View file

@ -42,6 +42,7 @@ std::string RTMPStream::Chunk::Pack(){
unsigned int tmpi;
unsigned char chtype = 0x00;
timestamp -= firsttime;
if (timestamp < prev.timestamp){timestamp = prev.timestamp;}
if ((prev.msg_type_id > 0) && (prev.cs_id == cs_id)){
if (msg_stream_id == prev.msg_stream_id){
chtype = 0x40;//do not send msg_stream_id
@ -215,7 +216,7 @@ std::string RTMPStream::SendUSR(unsigned char type, unsigned int data){
ch.msg_type_id = 4;
ch.msg_stream_id = 0;
ch.data.resize(6);
*(unsigned int*)((char*)ch.data.c_str()+2) = htonl(data);
*(unsigned int*)(((char*)ch.data.c_str())+2) = htonl(data);
ch.data[0] = 0;
ch.data[1] = type;
return ch.Pack();
@ -232,8 +233,8 @@ std::string RTMPStream::SendUSR(unsigned char type, unsigned int data, unsigned
ch.msg_type_id = 4;
ch.msg_stream_id = 0;
ch.data.resize(10);
*(unsigned int*)((char*)ch.data.c_str()+2) = htonl(data);
*(unsigned int*)((char*)ch.data.c_str()+6) = htonl(data2);
*(unsigned int*)(((char*)ch.data.c_str())+2) = htonl(data);
*(unsigned int*)(((char*)ch.data.c_str())+6) = htonl(data2);
ch.data[0] = 0;
ch.data[1] = type;
return ch.Pack();
@ -274,7 +275,8 @@ bool RTMPStream::Chunk::Parse(std::string & indata){
RTMPStream::Chunk prev = lastrecv[cs_id];
//process the rest of the header, for each chunk type
switch (chunktype & 0xC0){
headertype = chunktype & 0xC0;
switch (headertype){
case 0x00:
if (indata.size() < i+11) return false; //can't read whole header
timestamp = indata[i++]*256*256;
@ -296,7 +298,7 @@ bool RTMPStream::Chunk::Parse(std::string & indata){
timestamp = indata[i++]*256*256;
timestamp += indata[i++]*256;
timestamp += indata[i++];
timestamp += prev.timestamp;
if (timestamp != 0x00ffffff){timestamp += prev.timestamp;}
len = indata[i++]*256*256;
len += indata[i++]*256;
len += indata[i++];
@ -310,7 +312,7 @@ bool RTMPStream::Chunk::Parse(std::string & indata){
timestamp = indata[i++]*256*256;
timestamp += indata[i++]*256;
timestamp += indata[i++];
timestamp += prev.timestamp;
if (timestamp != 0x00ffffff){timestamp += prev.timestamp;}
len = prev.len;
len_left = prev.len_left;
msg_type_id = prev.msg_type_id;

1
util/rtmpchunks.h
View file

@ -30,6 +30,7 @@ namespace RTMPStream{
/// Holds a single RTMP chunk, either send or receive direction.
class Chunk{
public:
unsigned char headertype; ///< For input chunks, the type of header. This is calculated automatically for output chunks.
unsigned int cs_id; ///< ContentStream ID
unsigned int timestamp; ///< Timestamp of this chunk.
unsigned int len; ///< Length of the complete chunk.