openRTST 调试问题 ( FileSink.addData函数 相关 )
live555 的openRTSP 程序。
我要实现的功能，就是接收数据，并把数据传给解码模块播放。思路是在FileSink的addData函数中处理。修改FileSink.addData函数，给其加上打印语句，就是红色部分。
按我的理解，addData函数是写文件部分，应该频繁的被调用，但实际打印了一次。如果这样的话，还能不能再addData函数中处理呢？ addData函数是干什么呢？
当程序打印到 Receiving streamed data (for up to 75.000000 seconds) 时，慢了下来，应该是在接收数据，这又对应的程序什么地方呢？是不是该在这个地方下手呢？
Platform Type : PocketPC
Sending request: OPTIONS rtsp://www.localhost.com.cn:554/sample_300kbit.mp4 RTSP/1.0
CSeq: 1
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received OPTIONS response: RTSP/1.0 200 OK
Server: DSS/6.0.3 (Build/526.3; Platform/Linux; Release/Darwin Streaming Server; State/Development; )
Cseq: 1
Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE, OPTIONS, ANNOUNCE, RECORD
Sending request: DESCRIBE rtsp://www.localhost.com.cn:554/sample_300kbit.mp4 RTSP/1.0
CSeq: 2
Accept: application/sdp
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received DESCRIBE response:
Need to read 1269 extra bytes
Read 1269 extra bytes:
Opened URL "rtsp://www.localhost.com.cn:554/sample_300kbit.mp4", returning a SDP description:
Created receiver for "video/MP4V-ES" subsession (client ports 1446-1447)
Created receiver for "audio/MPEG4-GENERIC" subsession (client ports 1448-1449)
Sending request: SETUP rtsp://www.localhost.com.cn:554/sample_300kbit.mp4/trackID=3 RTSP/1.0
CSeq: 3
Transport: RTP/AVP;unicast;client_port=1446-1447
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received SETUP response:
Setup "video/MP4V-ES" subsession (client ports 1446-1447)
Sending request: SETUP rtsp://www.localhost.com.cn:554/sample_300kbit.mp4/trackID=4 RTSP/1.0
CSeq: 4
Transport: RTP/AVP;unicast;client_port=1448-1449
Session: 6657038914577620910
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received SETUP response:
Setup "audio/MPEG4-GENERIC" subsession (client ports 1470-1471)
Created output file: "video-MP4V-ES-1"
my_debug FileSink::addData 函数
my_debug the dataSize is 32
Created output file: "audio-MPEG4-GENERIC-2"
Sending request: PLAY rtsp://www.happyever.com.cn:554/sample_300kbit.mp4/ RTSP/1.0
CSeq: 5
Session: 6657038914577620910
Range: npt=0.000-70.000
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received PLAY response:
Started playing session
Receiving streamed data (for up to 75.000000 seconds)...
此处比较费时，应该是在这个地方接受数据
Sending request: TEARDOWN rtsp://www.localhost.com.cn:554/sample_300kbit.mp4/ RTSP/1.0
CSeq: 6
Session: 6657038914577620910
User-Agent: Window_RTSP (LIVE555 Streaming Media v2010.01.22)
Received TEARDOWN response: RTSP/1.0 200 OK
Server: DSS/6.0.3 (Build/526.3; Platform/Linux; Release/Darwin Streaming Server; State/Development; )
Cseq: 6
Session: 6657038914577620910
Connection: Close
程序“[0xE365F9DA] Window_RTSP.exe”已退出，返回值为 0 (0x0)。
[解决办法]
doEventLoop通过调用continuePlaying（）循环取数，Filesink中continuePlaying（）是真正的取数方法，通过getNextFrame每次获取一帧数据。
建议参考Mplayer源码中demux_rtp.cpp中的getBuffer接口，完成读取音视频数据直接送到解码器。
