for #316, add codec info to stream.

@@ -217,6 +217,7 @@ that is:
 #define __SRS_JFIELD_STR(k, v) "\"" << k << "\":\"" << v << "\""
 #define __SRS_JFIELD_ORG(k, v) "\"" << k << "\":" << std::dec << v
 #define __SRS_JFIELD_BOOL(k, v) __SRS_JFIELD_ORG(k, (v? "true":"false"))
+#define __SRS_JFIELD_NULL(k) "\"" << k << "\":null"
 #define __SRS_JFIELD_ERROR(ret) "\"" << "code" << "\":" << ret
 #define __SRS_JFIELD_CONT ","
 #define __SRS_JOBJECT_END "}"

@@ -202,7 +202,7 @@ int SrsRtmpConn::do_cycle()
     ret = service_cycle();
     http_hooks_on_close();
     SrsStatistic* stat = SrsStatistic::instance();
-    stat->on_close(_srs_context->get_id());
+    stat->on_disconnect(_srs_context->get_id());
     
     return ret;
 }

@@ -42,6 +42,7 @@ using namespace std;
 #include <srs_kernel_utility.hpp>
 #include <srs_kernel_codec.hpp>
 #include <srs_rtmp_msg_array.hpp>
+#include <srs_app_statistic.hpp>
 
 #define CONST_MAX_JITTER_MS         500
 #define DEFAULT_FRAME_TIME_MS         40
@@ -1373,6 +1374,7 @@ int SrsSource::on_audio(SrsCommonMessage* __audio)
 
     // cache the sequence header of aac, or first packet of mp3.
     // for example, the mp3 is used for hls to write the "right" audio codec.
+    // TODO: FIXME: to refine the stream info system.
     bool is_aac_sequence_header = SrsFlvCodec::audio_is_sequence_header(msg.payload, msg.size);
     if (is_aac_sequence_header || !cache_sh_audio) {
         srs_freep(cache_sh_audio);
@@ -1392,6 +1394,13 @@ int SrsSource::on_audio(SrsCommonMessage* __audio)
         
         static int flv_sample_sizes[] = {8, 16, 0};
         static int flv_sound_types[] = {1, 2, 0};
+        
+        // when got audio stream info.
+        SrsStatistic* stat = SrsStatistic::instance();
+        if ((ret = stat->on_audio_info(_req, SrsCodecAudioAAC, sample.sound_rate, sample.sound_type, codec.aac_profile)) != ERROR_SUCCESS) {
+            return ret;
+        }
+        
         srs_trace("%dB audio sh, "
             "codec(%d, profile=%d, %dchannels, %dkbps, %dHZ), "
             "flv(%dbits, %dchannels, %dHZ)", 
@@ -1515,6 +1524,12 @@ int SrsSource::on_video(SrsCommonMessage* __video)
             return ret;
         }
         
+        // when got video stream info.
+        SrsStatistic* stat = SrsStatistic::instance();
+        if ((ret = stat->on_video_info(_req, SrsCodecVideoAVC, codec.avc_profile, codec.avc_level)) != ERROR_SUCCESS) {
+            return ret;
+        }
+        
         srs_trace("%dB video sh, "
             "codec(%d, profile=%d, level=%d, %dx%d, %dkbps, %dfps, %ds)",
             msg.size, codec.video_codec_id,

@@ -50,12 +50,29 @@ SrsStatisticStream::SrsStatisticStream()
 {
     id = __srs_generate_id();
     vhost = NULL;
+    
+    has_video = false;
+    vcodec = SrsCodecVideoReserved;
+    avc_profile = 0;
+    avc_level = 0;
+    
+    has_audio = false;
+    acodec = SrsCodecAudioReserved1;
+    asample_rate = SrsCodecAudioSampleRateReserved;
+    asound_type = SrsCodecAudioSoundTypeReserved;
+    aac_profile = 0;
 }
 
 SrsStatisticStream::~SrsStatisticStream()
 {
 }
 
+void SrsStatisticStream::close()
+{
+    has_video = false;
+    has_audio = false;
+}
+
 SrsStatistic* SrsStatistic::_instance = new SrsStatistic();
 
 SrsStatistic::SrsStatistic()
@@ -93,34 +110,54 @@ SrsStatistic* SrsStatistic::instance()
     return _instance;
 }
 
-int SrsStatistic::on_client(int id, SrsRequest* req)
-{
+int SrsStatistic::on_video_info(SrsRequest* req, 
+    SrsCodecVideo vcodec, u_int8_t avc_profile, u_int8_t avc_level
+) {
     int ret = ERROR_SUCCESS;
     
-    // create vhost if not exists.
-    SrsStatisticVhost* vhost = NULL;
-    if (vhosts.find(req->vhost) == vhosts.end()) {
-        vhost = new SrsStatisticVhost();
-        vhost->vhost = req->vhost;
-        vhosts[req->vhost] = vhost;
-    } else {
-        vhost = vhosts[req->vhost];
-    }
+    SrsStatisticVhost* vhost = create_vhost(req);
+    SrsStatisticStream* stream = create_stream(vhost, req);
 
-    // the url to identify the stream.
-    std::string url = req->get_stream_url();
+    stream->has_video = true;
+    stream->vcodec = vcodec;
+    stream->avc_profile = avc_profile;
+    stream->avc_level = avc_level;
     
-    // create stream if not exists.
-    SrsStatisticStream* stream = NULL;
-    if (streams.find(url) == streams.end()) {
-        stream = new SrsStatisticStream();
-        stream->vhost = vhost;
-        stream->stream = req->stream;
-        stream->url = url;
-        streams[url] = stream;
-    } else {
-        stream = streams[url];
-    }
+    return ret;
+}
+
+int SrsStatistic::on_audio_info(SrsRequest* req,
+    SrsCodecAudio acodec, SrsCodecAudioSampleRate asample_rate, SrsCodecAudioSoundType asound_type,
+    u_int8_t aac_profile
+) {
+    int ret = ERROR_SUCCESS;
+    
+    SrsStatisticVhost* vhost = create_vhost(req);
+    SrsStatisticStream* stream = create_stream(vhost, req);
+
+    stream->has_audio = true;
+    stream->acodec = acodec;
+    stream->asample_rate = asample_rate;
+    stream->asound_type = asound_type;
+    stream->aac_profile = aac_profile;
+    
+    return ret;
+}
+
+void SrsStatistic::on_stream_close(SrsRequest* req)
+{
+    SrsStatisticVhost* vhost = create_vhost(req);
+    SrsStatisticStream* stream = create_stream(vhost, req);
+
+    stream->close();
+}
+
+int SrsStatistic::on_client(int id, SrsRequest* req)
+{
+    int ret = ERROR_SUCCESS;
+    
+    SrsStatisticVhost* vhost = create_vhost(req);
+    SrsStatisticStream* stream = create_stream(vhost, req);
 
     // create client if not exists
     SrsStatisticClient* client = NULL;
@@ -135,7 +172,7 @@ int SrsStatistic::on_client(int id, SrsRequest* req)
     return ret;
 }
 
-void SrsStatistic::on_close(int id)
+void SrsStatistic::on_disconnect(int id)
 {
     std::map<int, SrsStatisticClient*>::iterator it;
     it = clients.find(id);
@@ -198,10 +235,74 @@ int SrsStatistic::dumps_streams(stringstream& ss)
                 << __SRS_JFIELD_ORG("id", stream->id) << __SRS_JFIELD_CONT
                 << __SRS_JFIELD_STR("name", stream->stream) << __SRS_JFIELD_CONT
                 << __SRS_JFIELD_ORG("vhost", stream->vhost->id) << __SRS_JFIELD_CONT
-                << __SRS_JFIELD_ORG("clients", client_num)
+                << __SRS_JFIELD_ORG("clients", client_num) << __SRS_JFIELD_CONT;
+                
+        if (!stream->has_video) {
+            ss  << __SRS_JFIELD_NULL("video") << __SRS_JFIELD_CONT;
+        } else {
+            ss  << __SRS_JFIELD_NAME("video")
+                    << __SRS_JOBJECT_START
+                        << __SRS_JFIELD_STR("codec", srs_codec_video2str(stream->vcodec)) << __SRS_JFIELD_CONT
+                        << __SRS_JFIELD_ORG("profile", (int)stream->avc_profile) << __SRS_JFIELD_CONT
+                        << __SRS_JFIELD_ORG("level", (int)stream->avc_level)
+                    << __SRS_JOBJECT_END
+                << __SRS_JFIELD_CONT;
+        }
+                
+        if (!stream->has_audio) {
+            ss  << __SRS_JFIELD_NULL("audio");
+        } else {
+            ss  << __SRS_JFIELD_NAME("audio")
+                    << __SRS_JOBJECT_START
+                        << __SRS_JFIELD_STR("codec", srs_codec_audio2str(stream->acodec)) << __SRS_JFIELD_CONT
+                        << __SRS_JFIELD_ORG("sample_rate", (int)flv_sample_rates[stream->asample_rate]) << __SRS_JFIELD_CONT
+                        << __SRS_JFIELD_ORG("channel", (int)stream->asound_type + 1) << __SRS_JFIELD_CONT
+                        << __SRS_JFIELD_STR("profile", srs_codec_aac_profile2str(stream->aac_profile))
                     << __SRS_JOBJECT_END;
         }
+        
+        ss << __SRS_JOBJECT_END;
+    }
     ss << __SRS_JARRAY_END;
     
     return ret;
 }
+
+SrsStatisticVhost* SrsStatistic::create_vhost(SrsRequest* req)
+{
+    SrsStatisticVhost* vhost = NULL;
+    
+    // create vhost if not exists.
+    if (vhosts.find(req->vhost) == vhosts.end()) {
+        vhost = new SrsStatisticVhost();
+        vhost->vhost = req->vhost;
+        vhosts[req->vhost] = vhost;
+        return vhost;
+    }
+
+    vhost = vhosts[req->vhost];
+    
+    return vhost;
+}
+
+SrsStatisticStream* SrsStatistic::create_stream(SrsStatisticVhost* vhost, SrsRequest* req)
+{
+    std::string url = req->get_stream_url();
+    
+    SrsStatisticStream* stream = NULL;
+    
+    // create stream if not exists.
+    if (streams.find(url) == streams.end()) {
+        stream = new SrsStatisticStream();
+        stream->vhost = vhost;
+        stream->stream = req->stream;
+        stream->url = url;
+        streams[url] = stream;
+        return stream;
+    }
+    
+    stream = streams[url];
+    
+    return stream;
+}
+

@@ -33,6 +33,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <map>
 #include <string>
 
+#include <srs_kernel_codec.hpp>
+
 class SrsRequest;
 
 struct SrsStatisticVhost
@@ -54,8 +56,32 @@ public:
     std::string stream;
     std::string url;
 public:
+    bool has_video;
+    SrsCodecVideo vcodec;
+    // profile_idc, H.264-AVC-ISO_IEC_14496-10.pdf, page 45.
+    u_int8_t avc_profile;
+    // level_idc, H.264-AVC-ISO_IEC_14496-10.pdf, page 45.
+    u_int8_t avc_level;
+public:
+    bool has_audio;
+    SrsCodecAudio acodec;
+    SrsCodecAudioSampleRate asample_rate;
+    SrsCodecAudioSoundType asound_type;
+    /**
+    * audio specified
+    * audioObjectType, in 1.6.2.1 AudioSpecificConfig, page 33,
+    * 1.5.1.1 Audio object type definition, page 23,
+    *           in aac-mp4a-format-ISO_IEC_14496-3+2001.pdf.
+    */
+    u_int8_t aac_profile;
+public:
     SrsStatisticStream();
     virtual ~SrsStatisticStream();
+public:
+    /**
+    * close the stream.
+    */
+    virtual void close();
 };
 
 struct SrsStatisticClient
@@ -73,7 +99,7 @@ private:
     int64_t _server_id;
     // key: vhost name, value: vhost object.
     std::map<std::string, SrsStatisticVhost*> vhosts;
-    // key: stream name, value: stream object.
+    // key: stream url, value: stream object.
     std::map<std::string, SrsStatisticStream*> streams;
     // key: client id, value: stream object.
     std::map<int, SrsStatisticClient*> clients;
@@ -84,15 +110,33 @@ public:
     static SrsStatistic* instance();
 public:
     /**
+    * when got video info for stream.
+    */
+    virtual int on_video_info(SrsRequest* req, 
+        SrsCodecVideo vcodec, u_int8_t avc_profile, u_int8_t avc_level
+    );
+    /**
+    * when got audio info for stream.
+    */
+    virtual int on_audio_info(SrsRequest* req,
+        SrsCodecAudio acodec, SrsCodecAudioSampleRate asample_rate, SrsCodecAudioSoundType asound_type,
+        u_int8_t aac_profile
+    );
+    /**
+    * when close stream.
+    */
+    virtual void on_stream_close(SrsRequest* req);
+public:
+    /**
     * when got a client to publish/play stream,
     * @param id, the client srs id.
     * @param req, the client request object.
     */
     virtual int on_client(int id, SrsRequest* req);
     /**
-    * client close
+    * client disconnect
     */
-    virtual void on_close(int id);
+    virtual void on_disconnect(int id);
 public:
     /**
     * get the server id, used to identify the server.
@@ -107,6 +151,9 @@ public:
     * dumps the streams to sstream in json.
     */
     virtual int dumps_streams(std::stringstream& ss);
+private:
+    virtual SrsStatisticVhost* create_vhost(SrsRequest* req);
+    virtual SrsStatisticStream* create_stream(SrsStatisticVhost* vhost, SrsRequest* req);
 };
 
 #endif

@@ -32,6 +32,80 @@ using namespace std;
 #include <srs_kernel_stream.hpp>
 #include <srs_kernel_utility.hpp>
 
+string srs_codec_video2str(SrsCodecVideo codec)
+{
+    switch (codec) {
+        case SrsCodecVideoAVC: 
+            return "H264";
+        case SrsCodecVideoOn2VP6:
+        case SrsCodecVideoOn2VP6WithAlphaChannel:
+            return "H264";
+        case SrsCodecVideoReserved:
+        case SrsCodecVideoReserved1:
+        case SrsCodecVideoReserved2:
+        case SrsCodecVideoDisabled:
+        case SrsCodecVideoSorensonH263:
+        case SrsCodecVideoScreenVideo:
+        case SrsCodecVideoScreenVideoVersion2:
+        default:
+            return "Other";
+    }
+}
+
+string srs_codec_audio2str(SrsCodecAudio codec)
+{
+    switch (codec) {
+        case SrsCodecAudioAAC:
+            return "AAC";
+        case SrsCodecAudioMP3:
+            return "MP3";
+        case SrsCodecAudioReserved1:
+        case SrsCodecAudioLinearPCMPlatformEndian:
+        case SrsCodecAudioADPCM:
+        case SrsCodecAudioLinearPCMLittleEndian:
+        case SrsCodecAudioNellymoser16kHzMono:
+        case SrsCodecAudioNellymoser8kHzMono:
+        case SrsCodecAudioNellymoser:
+        case SrsCodecAudioReservedG711AlawLogarithmicPCM:
+        case SrsCodecAudioReservedG711MuLawLogarithmicPCM:
+        case SrsCodecAudioReserved:
+        case SrsCodecAudioSpeex:
+        case SrsCodecAudioReservedMP3_8kHz:
+        case SrsCodecAudioReservedDeviceSpecificSound:
+        default:
+            return "Other";
+    }
+}
+
+string srs_codec_aac_profile2str(u_int8_t aac_profile)
+{
+    switch (aac_profile) {
+        case 1: return "Main";
+        case 2: return "LC";
+        case 3: return "SSR";
+        default: return "Other";
+    }
+}
+
+/**
+* the public data, event HLS disable, others can use it.
+*/
+// 0 = 5.5 kHz = 5512 Hz
+// 1 = 11 kHz = 11025 Hz
+// 2 = 22 kHz = 22050 Hz
+// 3 = 44 kHz = 44100 Hz
+int flv_sample_rates[] = {5512, 11025, 22050, 44100};
+
+// the sample rates in the codec,
+// in the sequence header.
+int aac_sample_rates[] = 
+{
+    96000, 88200, 64000, 48000,
+    44100, 32000, 24000, 22050,
+    16000, 12000, 11025,  8000,
+    7350,     0,     0,    0
+};
+
 SrsFlvCodec::SrsFlvCodec()
 {
 }

@@ -110,6 +110,7 @@ enum SrsCodecVideo
     SrsCodecVideoScreenVideoVersion2     = 6,
     SrsCodecVideoAVC                     = 7,
 };
+std::string srs_codec_video2str(SrsCodecVideo codec);
 
 // SoundFormat UB [4] 
 // Format of SoundData. The following values are defined:
@@ -150,6 +151,7 @@ enum SrsCodecAudio
     SrsCodecAudioReservedMP3_8kHz                     = 14,
     SrsCodecAudioReservedDeviceSpecificSound         = 15,
 };
+std::string srs_codec_audio2str(SrsCodecAudio codec);
 
 /**
 * the FLV/RTMP supported audio sample rate.
@@ -373,6 +375,21 @@ enum SrsAvcPayloadFormat
     SrsAvcPayloadFormatIbmf,
 };
 
+// the profile = object_id + 1
+// @see aac-mp4a-format-ISO_IEC_14496-3+2001.pdf, page 78,
+//      Table 1. A.9 C MPEG-2 Audio profiles and MPEG-4 Audio object types
+// the valid object type:
+//      AAC Main(ID == 0)
+//      AAC LC(ID == 1)
+//      AAC SSR(ID == 2)
+//      AAC LTP(ID == 3)
+// the valid aac profile:
+//      Main profile (ID == 1)
+//      Low Complexity profile (LC) (ID == 2)
+//      Scalable Sampling Rate profile (SSR) (ID == 3)
+//      (reserved) (ID == 4)
+std::string srs_codec_aac_profile2str(u_int8_t aac_profile);
+
 /**
 * the h264/avc and aac codec, for media stream.
 *

@@ -56,25 +56,6 @@ using namespace std;
 #define TS_AUDIO_AAC_PID 0x102
 #define TS_AUDIO_MP3_PID 0x103
 
-/**
-* the public data, event HLS disable, others can use it.
-*/
-// 0 = 5.5 kHz = 5512 Hz
-// 1 = 11 kHz = 11025 Hz
-// 2 = 22 kHz = 22050 Hz
-// 3 = 44 kHz = 44100 Hz
-int flv_sample_rates[] = {5512, 11025, 22050, 44100};
-
-// the sample rates in the codec,
-// in the sequence header.
-int aac_sample_rates[] = 
-{
-    96000, 88200, 64000, 48000,
-    44100, 32000, 24000, 22050,
-    16000, 12000, 11025,  8000,
-    7350,     0,     0,    0
-};
-
 string srs_ts_stream2string(SrsTsStream stream)
 {
     switch (stream) {