fix #375, fix hls bug, keep cc continous between ts files. 2.0.159.

@@ -562,6 +562,7 @@ Supported operating systems and hardware:
 
 ### SRS 2.0 history
 
+* v2.0, 2015-04-08, for [#375](https://github.com/winlinvip/simple-rtmp-server/issues/375), fix hls bug, keep cc continous between ts files. 2.0.159.
 * v2.0, 2015-04-04, for [#304](https://github.com/winlinvip/simple-rtmp-server/issues/304), rewrite annexb mux for ts, refer to apple sample. 2.0.157.
 * v2.0, 2015-04-03, enhanced avc decode, parse the sps get width+height. 2.0.156.
 * v2.0, 2015-04-03, for [#372](https://github.com/winlinvip/simple-rtmp-server/issues/372), support transform vhost of edge 2.0.155.

@@ -138,14 +138,14 @@ string SrsHlsCacheWriter::cache()
     return data;
 }
 
-SrsHlsSegment::SrsHlsSegment(bool write_cache, bool write_file, SrsCodecAudio ac, SrsCodecVideo vc)
+SrsHlsSegment::SrsHlsSegment(SrsTsContext* c, bool write_cache, bool write_file, SrsCodecAudio ac, SrsCodecVideo vc)
 {
     duration = 0;
     sequence_no = 0;
     segment_start_dts = 0;
     is_sequence_header = false;
     writer = new SrsHlsCacheWriter(write_cache, write_file);
-    muxer = new SrsTSMuxer(writer, ac, vc);
+    muxer = new SrsTSMuxer(writer, c, ac, vc);
 }
 
 SrsHlsSegment::~SrsHlsSegment()
@@ -236,6 +236,7 @@ SrsHlsMuxer::SrsHlsMuxer()
     should_write_cache = false;
     should_write_file = true;
     async = new SrsDvrAsyncCallThread();
+    context = new SrsTsContext();
 }
 
 SrsHlsMuxer::~SrsHlsMuxer()
@@ -250,6 +251,7 @@ SrsHlsMuxer::~SrsHlsMuxer()
     srs_freep(current);
     srs_freep(req);
     srs_freep(async);
+    srs_freep(context);
 }
 
 int SrsHlsMuxer::sequence_no()
@@ -269,11 +271,21 @@ double SrsHlsMuxer::duration()
 
 double SrsHlsMuxer::deviation()
 {
+    // no floor, no deviation.
+    if (!hls_ts_floor) {
+        return 0;
+    }
+    
     return hls_fragment_deviation;
 }
 
 int SrsHlsMuxer::absolute_deviation()
 {
+    // no floor, no deviation.
+    if (!hls_ts_floor) {
+        return 0;
+    }
+    
     // accept the floor ts for the first piece.
     int64_t floor_ts = (int64_t)(srs_get_system_time_ms() / (1000 * hls_fragment));
     return (int)(accept_floor_ts - (floor_ts - 1));
@@ -391,7 +403,7 @@ int SrsHlsMuxer::segment_open(int64_t segment_start_dts)
     }
     
     // new segment.
-    current = new SrsHlsSegment(should_write_cache, should_write_file, default_acodec, default_vcodec);
+    current = new SrsHlsSegment(context, should_write_cache, should_write_file, default_acodec, default_vcodec);
     current->sequence_no = _sequence_no++;
     current->segment_start_dts = segment_start_dts;
     

@@ -56,6 +56,7 @@ class SrsTsAacJitter;
 class SrsTsCache;
 class SrsHlsSegment;
 class SrsTsCache;
+class SrsTsContext;
 
 /**
 * the handler for hls event.
@@ -145,7 +146,7 @@ public:
     // whether current segement is sequence header.
     bool is_sequence_header;
 public:
-    SrsHlsSegment(bool write_cache, bool write_file, SrsCodecAudio ac, SrsCodecVideo vc);
+    SrsHlsSegment(SrsTsContext* c, bool write_cache, bool write_file, SrsCodecAudio ac, SrsCodecVideo vc);
     virtual ~SrsHlsSegment();
 public:
     /**
@@ -229,6 +230,11 @@ private:
     * @see https://github.com/winlinvip/simple-rtmp-server/issues/301
     */
     SrsCodecAudio acodec;
+    /**
+     * the ts context, to keep cc continous between ts.
+     * @see https://github.com/winlinvip/simple-rtmp-server/issues/375
+     */
+    SrsTsContext* context;
 public:
     SrsHlsMuxer();
     virtual ~SrsHlsMuxer();

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    158
+#define VERSION_REVISION    159
 
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"

@@ -51,10 +51,10 @@ using namespace std;
 
 // the mpegts header specifed the video/audio pid.
 #define TS_PMT_NUMBER 1
-#define TS_PMT_PID 0x100
-#define TS_VIDEO_AVC_PID 0x101
-#define TS_AUDIO_AAC_PID 0x102
-#define TS_AUDIO_MP3_PID 0x103
+#define TS_PMT_PID 0x1001
+#define TS_VIDEO_AVC_PID 0x100
+#define TS_AUDIO_AAC_PID 0x101
+#define TS_AUDIO_MP3_PID 0x102
 
 string srs_ts_stream2string(SrsTsStream stream)
 {
@@ -95,6 +95,7 @@ SrsTsMessage::SrsTsMessage(SrsTsChannel* c, SrsTsPacket* p)
     continuity_counter = 0;
     PES_packet_length = 0;
     payload = new SrsSimpleBuffer();
+    is_discontinuity = false;
 
     start_pts = 0;
     write_pcr = false;
@@ -192,6 +193,12 @@ SrsTsContext::~SrsTsContext()
     pids.clear();
 }
 
+void SrsTsContext::reset()
+{
+    vcodec = SrsCodecVideoReserved;
+    acodec = SrsCodecAudioReserved1;
+}
+
 SrsTsChannel* SrsTsContext::get(int pid)
 {
     if (pids.find(pid) == pids.end()) {
@@ -251,7 +258,7 @@ int SrsTsContext::encode(SrsFileWriter* writer, SrsTsMessage* msg, SrsCodecVideo
     int ret = ERROR_SUCCESS;
 
     SrsTsStream vs, as;
-    int16_t video_pid, audio_pid;
+    int16_t video_pid = 0, audio_pid = 0;
     switch (vc) {
         case SrsCodecVideoAVC: 
             vs = SrsTsStreamVideoH264; 
@@ -401,9 +408,14 @@ int SrsTsContext::encode_pes(SrsFileWriter* writer, SrsTsMessage* msg, int16_t p
                 write_pcr = true;
             }
 
+            // it's ok to set pcr equals to dts,
+            // @see https://github.com/winlinvip/simple-rtmp-server/issues/311
+            int64_t pcr = write_pcr? msg->dts : -1;
+            
+            // TODO: FIXME: finger it why use discontinuity of msg.
             pkt = SrsTsPacket::create_pes_first(this, 
-                pid, msg->sid, channel->continuity_counter++, msg->discontinuity, 
-                write_pcr? msg->dts:-1, msg->dts, msg->pts, msg->payload->length()
+                pid, msg->sid, channel->continuity_counter++, msg->is_discontinuity,
+                pcr, msg->dts, msg->pts, msg->payload->length()
             );
         } else {
             pkt = SrsTsPacket::create_pes_continue(this, 
@@ -419,7 +431,7 @@ int SrsTsContext::encode_pes(SrsFileWriter* writer, SrsTsMessage* msg, int16_t p
         int nb_buf = pkt->size();
         srs_assert(nb_buf < SRS_TS_PACKET_SIZE);
 
-        int left = srs_min(end - p, SRS_TS_PACKET_SIZE - nb_buf);
+        int left = (int)srs_min(end - p, SRS_TS_PACKET_SIZE - nb_buf);
         int nb_stuffings = SRS_TS_PACKET_SIZE - nb_buf - left;
         if (nb_stuffings > 0) {
             // set all bytes to stuffings.
@@ -432,7 +444,7 @@ int SrsTsContext::encode_pes(SrsFileWriter* writer, SrsTsMessage* msg, int16_t p
             nb_buf = pkt->size();
             srs_assert(nb_buf < SRS_TS_PACKET_SIZE);
 
-            left = srs_min(end - p, SRS_TS_PACKET_SIZE - nb_buf);
+            left = (int)srs_min(end - p, SRS_TS_PACKET_SIZE - nb_buf);
             nb_stuffings = SRS_TS_PACKET_SIZE - nb_buf - left;
             srs_assert(nb_stuffings == 0);
         }
@@ -703,13 +715,18 @@ SrsTsPacket* SrsTsPacket::create_pmt(SrsTsContext* context, int16_t pmt_number,
     pmt->section_number = 0;
     pmt->last_section_number = 0;
     pmt->program_info_length = 0;
+    
+    // use audio to carray pcr by default.
+    // for hls, there must be atleast one audio channel.
+    pmt->PCR_PID = apid;
+    pmt->infos.push_back(new SrsTsPayloadPMTESInfo(as, apid));
+    
+    // if h.264 specified, use video to carry pcr.
     if (vs == SrsTsStreamVideoH264) {
         pmt->PCR_PID = vpid;
         pmt->infos.push_back(new SrsTsPayloadPMTESInfo(vs, vpid));
-    } else {
-        pmt->PCR_PID = apid;
     }
-    pmt->infos.push_back(new SrsTsPayloadPMTESInfo(as, apid));
+    
     pmt->CRC_32 = 0; // calc in encode.
     return pkt;
 }
@@ -2604,10 +2621,10 @@ int SrsTsPayloadPMT::psi_encode(SrsStream* stream)
     return ret;
 }
 
-SrsTSMuxer::SrsTSMuxer(SrsFileWriter* w, SrsCodecAudio ac, SrsCodecVideo vc)
+SrsTSMuxer::SrsTSMuxer(SrsFileWriter* w, SrsTsContext* c, SrsCodecAudio ac, SrsCodecVideo vc)
 {
     writer = w;
-    context = NULL;
+    context = c;
 
     acodec = ac;
     vcodec = vc;
@@ -2626,9 +2643,8 @@ int SrsTSMuxer::open(string _path)
     
     close();
     
-    // use context to write ts file.
-    srs_freep(context);
-    context = new SrsTsContext();
+    // reset the context for a new ts start.
+    context->reset();
     
     if ((ret = writer->open(path)) != ERROR_SUCCESS) {
         return ret;
@@ -2677,7 +2693,6 @@ int SrsTSMuxer::write_video(SrsTsMessage* video)
 
 void SrsTSMuxer::close()
 {
-    srs_freep(context);
     writer->close();
 }
 
@@ -2911,6 +2926,8 @@ int SrsTsCache::do_cache_avc(SrsAvcAacCodec* codec, SrsCodecSample* sample)
     //      9, SI (SI slice)
     // H.264-AVC-ISO_IEC_14496-10-2012.pdf, page 105.
     static u_int8_t aud_nalu_7[] = { 0x09, 0xf0};
+    
+    // always append a aud nalu for each frame.
     video->payload->append((const char*)fresh_nalu_header, 4);
     video->payload->append((const char*)aud_nalu_7, 2);
     
@@ -2973,6 +2990,7 @@ SrsTsEncoder::SrsTsEncoder()
     codec = new SrsAvcAacCodec();
     sample = new SrsCodecSample();
     cache = new SrsTsCache();
+    context = new SrsTsContext();
     muxer = NULL;
 }
 
@@ -2982,6 +3000,7 @@ SrsTsEncoder::~SrsTsEncoder()
     srs_freep(sample);
     srs_freep(cache);
     srs_freep(muxer);
+    srs_freep(context);
 }
 
 int SrsTsEncoder::initialize(SrsFileWriter* fs)
@@ -2999,7 +3018,7 @@ int SrsTsEncoder::initialize(SrsFileWriter* fs)
     _fs = fs;
 
     srs_freep(muxer);
-    muxer = new SrsTSMuxer(fs, SrsCodecAudioAAC, SrsCodecVideoAVC);
+    muxer = new SrsTSMuxer(fs, context, SrsCodecAudioAAC, SrsCodecVideoAVC);
 
     if ((ret = muxer->open("")) != ERROR_SUCCESS) {
         return ret;

@@ -47,6 +47,7 @@ class SrsTsAdaptationField;
 class SrsTsPayload;
 class SrsTsMessage;
 class SrsTsPacket;
+class SrsTsContext;
 
 // Transport Stream packets are 188 bytes in length.
 #define SRS_TS_PACKET_SIZE          188
@@ -258,7 +259,7 @@ public:
     // generally, the video IDR(I frame, the keyframe of h.264) carray the pcr info.
     bool write_pcr;
     // whether got discontinuity ts, for example, sequence header changed.
-    bool discontinuity;
+    bool is_discontinuity;
 public:
     // the timestamp in 90khz
     int64_t dts;
@@ -343,6 +344,11 @@ private:
 public:
     SrsTsContext();
     virtual ~SrsTsContext();
+public:
+    /**
+     * reset the context for a new ts segment start.
+     */
+    virtual void reset();
 // codec
 public:
     /**
@@ -1533,7 +1539,7 @@ private:
     SrsFileWriter* writer;
     std::string path;
 public:
-    SrsTSMuxer(SrsFileWriter* w, SrsCodecAudio ac, SrsCodecVideo vc);
+    SrsTSMuxer(SrsFileWriter* w, SrsTsContext* c, SrsCodecAudio ac, SrsCodecVideo vc);
     virtual ~SrsTSMuxer();
 public:
     /**
@@ -1608,6 +1614,7 @@ private:
     SrsCodecSample* sample;
     SrsTsCache* cache;
     SrsTSMuxer* muxer;
+    SrsTsContext* context;
 public:
     SrsTsEncoder();
     virtual ~SrsTsEncoder();