refine params nameing and SrsStream.

@@ -252,7 +252,7 @@ int SrsFileReader::read(void* buf, size_t count, ssize_t* pnread)
     // TODO: FIXME: use st_read.
     if ((nread = ::read(fd, buf, count)) < 0) {
         ret = ERROR_SYSTEM_FILE_READ;
-        srs_error("read from file %s failed. ret=%d", _file.c_str(), ret);
+        srs_error("read from file %s failed. ret=%d", path.c_str(), ret);
         return ret;
     }
     

@@ -40,7 +40,7 @@ using namespace std;
 
 SrsMp3Encoder::SrsMp3Encoder()
 {
-    _fs = NULL;
+    writer = NULL;
     tag_stream = new SrsStream();
 }
 
@@ -49,19 +49,19 @@ SrsMp3Encoder::~SrsMp3Encoder()
     srs_freep(tag_stream);
 }
 
-int SrsMp3Encoder::initialize(SrsFileWriter* fs)
+int SrsMp3Encoder::initialize(SrsFileWriter* fw)
 {
     int ret = ERROR_SUCCESS;
     
-    srs_assert(fs);
+    srs_assert(fw);
     
-    if (!fs->is_open()) {
+    if (!fw->is_open()) {
         ret = ERROR_KERNEL_MP3_STREAM_CLOSED;
         srs_warn("stream is not open for encoder. ret=%d", ret);
         return ret;
     }
     
-    _fs = fs;
+    writer = fw;
     
     return ret;
 }
@@ -78,7 +78,7 @@ int SrsMp3Encoder::write_header()
         (char)0x00, (char)0x00, (char)0x00, (char)0x00, // FrameSize
         (char)0x00, (char)0x00 // Flags
     };
-    return _fs->write(id3, sizeof(id3), NULL);
+    return writer->write(id3, sizeof(id3), NULL);
 }
 
 int SrsMp3Encoder::write_audio(int64_t timestamp, char* data, int size)
@@ -122,6 +122,6 @@ int SrsMp3Encoder::write_audio(int64_t timestamp, char* data, int size)
         return ret;
     }
     
-    return _fs->write(data + stream->pos(), size - stream->pos(), NULL);
+    return writer->write(data + stream->pos(), size - stream->pos(), NULL);
 }
 

@@ -33,7 +33,6 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 class SrsStream;
 class SrsFileWriter;
-class SrsFileReader;
 
 /**
 * encode data to aac file.
@@ -41,7 +40,7 @@ class SrsFileReader;
 class SrsMp3Encoder
 {
 private:
-    SrsFileWriter* _fs;
+    SrsFileWriter* writer;
 private:
     SrsStream* tag_stream;
 public:
@@ -51,9 +50,9 @@ public:
     /**
     * initialize the underlayer file stream.
     * @remark user can initialize multiple times to encode multiple mp3 files.
-    * @remark, user must free the fs, mp3 encoder never close/free it.
+    * @remark, user must free the @param fw, mp3 encoder never close/free it.
     */
-    virtual int initialize(SrsFileWriter* fs);
+    virtual int initialize(SrsFileWriter* fw);
 public:
     /**
     * write mp3 id3 v2.3 header.

@@ -31,8 +31,8 @@ using namespace std;
 
 SrsStream::SrsStream()
 {
-    p = _bytes = NULL;
-    _size = 0;
+    p = bytes = NULL;
+    nb_bytes = 0;
     
     // TODO: support both little and big endian.
     srs_assert(srs_is_little_endian());
@@ -42,24 +42,24 @@ SrsStream::~SrsStream()
 {
 }
 
-int SrsStream::initialize(char* bytes, int size)
+int SrsStream::initialize(char* b, int nb)
 {
     int ret = ERROR_SUCCESS;
     
-    if (!bytes) {
+    if (!b) {
         ret = ERROR_KERNEL_STREAM_INIT;
         srs_error("stream param bytes must not be NULL. ret=%d", ret);
         return ret;
     }
     
-    if (size <= 0) {
+    if (nb <= 0) {
         ret = ERROR_KERNEL_STREAM_INIT;
         srs_error("stream param size must be positive. ret=%d", ret);
         return ret;
     }
 
-    _size = size;
-    p = _bytes = bytes;
+    nb_bytes = nb;
+    p = bytes = b;
     srs_info("init stream ok, size=%d", size);
 
     return ret;
@@ -67,29 +67,29 @@ int SrsStream::initialize(char* bytes, int size)
 
 char* SrsStream::data()
 {
-    return _bytes;
+    return bytes;
 }
 
 int SrsStream::size()
 {
-    return _size;
+    return nb_bytes;
 }
 
 int SrsStream::pos()
 {
-    return p - _bytes;
+    return (int)(p - bytes);
 }
 
 bool SrsStream::empty()
 {
-    return !_bytes || (p >= _bytes + _size);
+    return !bytes || (p >= bytes + nb_bytes);
 }
 
 bool SrsStream::require(int required_size)
 {
     srs_assert(required_size > 0);
     
-    return required_size <= _size - (p - _bytes);
+    return required_size <= nb_bytes - (p - bytes);
 }
 
 void SrsStream::skip(int size)
@@ -111,7 +111,7 @@ int16_t SrsStream::read_2bytes()
     srs_assert(require(2));
     
     int16_t value;
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     pp[1] = *p++;
     pp[0] = *p++;
     
@@ -123,7 +123,7 @@ int32_t SrsStream::read_3bytes()
     srs_assert(require(3));
     
     int32_t value = 0x00;
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     pp[2] = *p++;
     pp[1] = *p++;
     pp[0] = *p++;
@@ -136,7 +136,7 @@ int32_t SrsStream::read_4bytes()
     srs_assert(require(4));
     
     int32_t value;
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     pp[3] = *p++;
     pp[2] = *p++;
     pp[1] = *p++;
@@ -150,7 +150,7 @@ int64_t SrsStream::read_8bytes()
     srs_assert(require(8));
     
     int64_t value;
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     pp[7] = *p++;
     pp[6] = *p++;
     pp[5] = *p++;
@@ -195,7 +195,7 @@ void SrsStream::write_2bytes(int16_t value)
 {
     srs_assert(require(2));
     
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     *p++ = pp[1];
     *p++ = pp[0];
 }
@@ -204,7 +204,7 @@ void SrsStream::write_4bytes(int32_t value)
 {
     srs_assert(require(4));
     
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     *p++ = pp[3];
     *p++ = pp[2];
     *p++ = pp[1];
@@ -215,7 +215,7 @@ void SrsStream::write_3bytes(int32_t value)
 {
     srs_assert(require(3));
     
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     *p++ = pp[2];
     *p++ = pp[1];
     *p++ = pp[0];
@@ -225,7 +225,7 @@ void SrsStream::write_8bytes(int64_t value)
 {
     srs_assert(require(8));
     
-    pp = (char*)&value;
+    char* pp = (char*)&value;
     *p++ = pp[7];
     *p++ = pp[6];
     *p++ = pp[5];
@@ -238,7 +238,7 @@ void SrsStream::write_8bytes(int64_t value)
 
 void SrsStream::write_string(string value)
 {
-    srs_assert(require(value.length()));
+    srs_assert(require((int)value.length()));
     
     memcpy(p, value.data(), value.length());
     p += value.length();

@@ -41,23 +41,25 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 class SrsStream
 {
 private:
+    // current position at bytes.
     char* p;
-    char* pp;
-    char* _bytes;
-    int _size;
+    // the bytes data for stream to read or write.
+    char* bytes;
+    // the total number of bytes.
+    int nb_bytes;
 public:
     SrsStream();
     virtual ~SrsStream();
 public:
     /**
     * initialize the stream from bytes.
-    * @bytes, the bytes to convert from/to basic types.
-    * @size, the size of bytes.
+    * @b, the bytes to convert from/to basic types.
+    * @nb, the size of bytes, total number of bytes for stream.
     * @remark, stream never free the bytes, user must free it.
     * @remark, return error when bytes NULL.
     * @remark, return error when size is not positive.
     */
-    virtual int initialize(char* bytes, int size);
+    virtual int initialize(char* b, int nb);
 // get the status of stream
 public:
     /**

@@ -2697,11 +2697,11 @@ SrsTSMuxer::~SrsTSMuxer()
     close();
 }
 
-int SrsTSMuxer::open(string _path)
+int SrsTSMuxer::open(string p)
 {
     int ret = ERROR_SUCCESS;
     
-    path = _path;
+    path = p;
     
     close();
     
@@ -3048,7 +3048,7 @@ int SrsTsCache::do_cache_avc(SrsAvcAacCodec* codec, SrsCodecSample* sample)
 
 SrsTsEncoder::SrsTsEncoder()
 {
-    _fs = NULL;
+    writer = NULL;
     codec = new SrsAvcAacCodec();
     sample = new SrsCodecSample();
     cache = new SrsTsCache();
@@ -3065,22 +3065,22 @@ SrsTsEncoder::~SrsTsEncoder()
     srs_freep(context);
 }
 
-int SrsTsEncoder::initialize(SrsFileWriter* fs)
+int SrsTsEncoder::initialize(SrsFileWriter* fw)
 {
     int ret = ERROR_SUCCESS;
     
-    srs_assert(fs);
+    srs_assert(fw);
     
-    if (!fs->is_open()) {
+    if (!fw->is_open()) {
         ret = ERROR_KERNEL_FLV_STREAM_CLOSED;
         srs_warn("stream is not open for encoder. ret=%d", ret);
         return ret;
     }
     
-    _fs = fs;
+    writer = fw;
 
     srs_freep(muxer);
-    muxer = new SrsTSMuxer(fs, context, SrsCodecAudioAAC, SrsCodecVideoAVC);
+    muxer = new SrsTSMuxer(fw, context, SrsCodecAudioAAC, SrsCodecVideoAVC);
 
     if ((ret = muxer->open("")) != ERROR_SUCCESS) {
         return ret;

@@ -1560,9 +1560,10 @@ public:
     virtual ~SrsTSMuxer();
 public:
     /**
-    * open the writer, donot write the PSI of ts.
-    */
-    virtual int open(std::string _path);
+     * open the writer, donot write the PSI of ts.
+     * @param p a string indicates the path of ts file to mux to.
+     */
+    virtual int open(std::string p);
     /**
     * when open ts, we donot write the header(PSI),
     * for user may need to update the acodec to mp3 or others,
@@ -1625,7 +1626,7 @@ private:
 class SrsTsEncoder
 {
 private:
-    SrsFileWriter* _fs;
+    SrsFileWriter* writer;
 private:
     SrsAvcAacCodec* codec;
     SrsCodecSample* sample;
@@ -1637,9 +1638,10 @@ public:
     virtual ~SrsTsEncoder();
 public:
     /**
-    * initialize the underlayer file stream.
-    */
-    virtual int initialize(SrsFileWriter* fs);
+     * initialize the underlayer file stream.
+     * @param fw the writer to use for ts encoder, user must free it.
+     */
+    virtual int initialize(SrsFileWriter* fw);
 public:
     /**
     * write audio/video packet.