97 lines
3.4 KiB
C++
97 lines
3.4 KiB
C++
#include "chunkstream.cpp" //chunkstream decoding
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#include "amf.cpp" //simple AMF0 parsing
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//gets and parses one chunk
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void parseChunk(){
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static chunkpack next;
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static std::vector<AMFType> * amfdata = 0;
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static AMFType * amfelem = 0;
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static int tmpint;
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next = getWholeChunk();
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if (next.cs_id == 2 && next.msg_stream_id == 0){
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fprintf(stderr, "Received protocol message. (cs_id 2, stream id 0)\nContents:\n");
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fwrite(next.data, 1, next.real_len, stderr);
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fflush(stderr);
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}
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switch (next.msg_type_id){
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case 0://does not exist
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break;//happens when connection breaks unexpectedly
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case 1://set chunk size
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chunk_rec_max = ntohl(*(int*)next.data);
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fprintf(stderr, "CTRL: Set chunk size: %i\n", chunk_rec_max);
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break;
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case 2://abort message - we ignore this one
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fprintf(stderr, "CTRL: Abort message\n");
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//4 bytes of stream id to drop
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break;
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case 3://ack
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fprintf(stderr, "CTRL: Acknowledgement\n");
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snd_window_at = ntohl(*(int*)next.data);
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//maybe better? snd_window_at = snd_cnt;
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break;
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case 4:
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fprintf(stderr, "CTRL: User control message\n");
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//2 bytes event type, rest = event data
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//TODO: process this
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break;
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case 5://window size of other end
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fprintf(stderr, "CTRL: Window size\n");
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rec_window_size = ntohl(*(int*)next.data);
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break;
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case 6:
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fprintf(stderr, "CTRL: Set peer bandwidth\n");
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//4 bytes window size, 1 byte limit type (ignored)
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snd_window_size = ntohl(*(int*)next.data);
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SendCTL(5, snd_window_size);//send window acknowledgement size (msg 5)
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break;
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case 8:
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fprintf(stderr, "Received audio data\n");
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break;
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case 9:
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fprintf(stderr, "Received video data\n");
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break;
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case 15:
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fprintf(stderr, "Received AFM3 data message\n");
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break;
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case 16:
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fprintf(stderr, "Received AFM3 shared object\n");
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break;
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case 17:
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fprintf(stderr, "Received AFM3 command message\n");
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break;
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case 18:
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fprintf(stderr, "Received AFM0 data message\n");
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break;
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case 19:
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fprintf(stderr, "Received AFM0 shared object\n");
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break;
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case 20:
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if (amfdata != 0){delete amfdata;}
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amfdata = parseAMF(next.data, next.real_len);
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fprintf(stderr, "Received AFM0 command message: %s\n", (*amfdata)[0].StrValue().c_str());
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if ((*amfdata)[0].StrValue() == "connect"){
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tmpint = getAMF(amfdata, "videoCodecs")->NumValue();
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if (tmpint & 0x04){fprintf(stderr, "Sorensen video support detected\n");}
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if (tmpint & 0x80){fprintf(stderr, "H264 video support detected\n");}
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tmpint = getAMF(amfdata, "audioCodecs")->NumValue();
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if (tmpint & 0x04){fprintf(stderr, "MP3 audio support detected\n");}
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if (tmpint & 0x400){fprintf(stderr, "AAC video support detected\n");}
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SendCTL(5, snd_window_size);//send window acknowledgement size (msg 5)
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SendCTL(5, rec_window_size, 1);//send peer bandwidth (msg 6)
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SendUSR(0, 10);//send UCM StreamBegin (0), stream 10 (we use this number)
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//send AFM0 (20) {_result, 1, {properties}, {info}}
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}else{
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//call, close, createStream
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//TODO: play (&& play2?)
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fprintf(stderr, "Ignored AFM0 command.\n");
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}
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break;
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case 22:
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fprintf(stderr, "Received aggregate message\n");
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break;
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default:
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fprintf(stderr, "Unknown chunk received!\n");
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break;
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}
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}//parseChunk
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