Attempt to make RTMP properly compatible with all codecs

This commit is contained in:
Thulinma 2011-08-14 18:07:03 +02:00
parent 013f6c1d17
commit 1f43dff92f
2 changed files with 26 additions and 0 deletions

View file

@ -43,6 +43,31 @@ bool FLV::is_header(char * header){
return true;
}//FLV::is_header
/// True if this media type requires init data.
/// Will always return false if the tag type is not 0x08 or 0x09.
/// Returns true for H263, AVC (H264), AAC.
/// \todo Check if MP3 does or does not require init data...
bool FLV::Tag::needsInitData(){
switch (data[0]){
case 0x09:
switch (data[11] & 0x0F){
case 2: return true; break;//H263 requires init data
case 7: return true; break;//AVC requires init data
default: return false; break;//other formats do not
}
break;
case 0x08:
switch (data[11] & 0xF0){
case 0x20: return false; break;//MP3 does not...? Unsure.
case 0xA0: return true; break;//AAC requires init data
case 0xE0: return false; break;//MP38kHz does not...?
default: return false; break;//other formats do not
}
break;
}
return false;//only audio/video can require init data
}
/// True if current tag is init data for this media type.
bool FLV::Tag::isInitData(){
switch (data[0]){

View file

@ -22,6 +22,7 @@ namespace FLV {
int len; ///< Actual length of tag.
bool isKeyframe; ///< True if current tag is a video keyframe.
char * data; ///< Pointer to tag buffer.
bool needsInitData(); ///< True if this media type requires init data.
bool isInitData(); ///< True if current tag is init data for this media type.
std::string tagType(); ///< Returns a std::string describing the tag in detail.
unsigned int tagTime(); ///< Returns the 32-bit timestamp of this tag.