Added Opus support. Ticket #75.

darkice/trunk/ChangeLog

@@ -1,4 +1,6 @@
 next version
+    o Issue #75: Added Ogg/Opus support. Patch by Doug Kelly
+	dougk.ff7@gmail.com
     o Fix 'Ring Ruffer' reports.
       - Increased buffer for jack to 5 seconds
       - prevent darkice termination by jack, report no fatal problem when we

darkice/trunk/INSTALL

@@ -1,365 +0,0 @@
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darkice/trunk/configure.in

@@ -115,6 +115,44 @@ else
 fi
 
 
+dnl-----------------------------------------------------------------------------
+dnl link the ogg / opus libraries if requested
+dnl-----------------------------------------------------------------------------
+AC_SUBST(OPUS_INCFLAGS)
+AC_SUBST(OPUS_LDFLAGS)
+
+AC_ARG_WITH(opus,
+[  --with-opus           use Ogg Opus for encoding opus streams [yes] ],
+    USE_OPUS=${withval}, USE_OPUS="yes" )
+AC_ARG_WITH(opus-prefix,
+[  --with-opus-prefix=DIR    alternate location for opus [/usr]
+                              look for libraries in OPUS-PREFIX/lib,
+                              for headers in OPUS-PREFIX/include],
+    CONFIG_OPUS_PREFIX="${withval}", CONFIG_OPUS_PREFIX="/usr")
+
+if test "x${USE_OPUS}" = "xyes" ; then
+    AC_MSG_CHECKING( [for opus libraries at ${CONFIG_OPUS_PREFIX}] )
+    LA_SEARCH_LIB( OGG_LIB_LOC, OGG_INC_LOC, libogg.a libogg.so, ogg/ogg.h,
+                   ${CONFIG_OPUS_PREFIX})
+    LA_SEARCH_LIB( OPUS_LIB_LOC, OPUS_INC_LOC, libopus.a libopus.so, opus/opus.h,
+                   ${CONFIG_OPUS_PREFIX})
+
+    if test "x${OGG_LIB_LOC}" != "x" -a \
+            "x${OPUS_LIB_LOC}" != "x" ; then
+
+        AC_DEFINE( HAVE_OPUS_LIB, 1, [build with Ogg Opus library] )
+        if test "x${OGG_INC_LOC}" != "x${SYSTEM_INCLUDE}" ; then
+            OPUS_INCFLAGS="-I${OGG_INC_LOC}"
+        fi
+        OPUS_LDFLAGS="-L${OGG_LIB_LOC} -logg -lopus"
+        AC_MSG_RESULT( [found at ${CONFIG_OPUS_PREFIX}] )
+    else
+        AC_MSG_WARN( [not found, building without Ogg Opus])
+    fi
+else
+    AC_MSG_RESULT( [building without Ogg Opus] )
+fi
+
 dnl-----------------------------------------------------------------------------
 dnl link the faac library if requested
 dnl-----------------------------------------------------------------------------

darkice/trunk/man/darkice.1

@@ -20,6 +20,7 @@ DarkIce can encode in the following formats:
     * mp3 - using the lame library
     * mp2 - using the twolame library
     * Ogg Vorbis
+    * Ogg Opus
     * AAC - using the faac library
     * AAC HEv2 - using the libaacplus (3GPP reference code)
 
@@ -141,6 +142,10 @@ homepage:
 homepage:
 .I http://www.xiph.org/ogg/vorbis/
 
+.B Ogg Opus
+homepage
+.I http://www.opus-codec.org/
+
 .B faac
 homepage:
 .I http://www.audiocoding.com/

darkice/trunk/man/darkice.cfg.5

@@ -236,13 +236,13 @@ Required values:
 .I format
 Format of the stream sent to the
 .B IceCast2
-server. Supported formats are 'vorbis', 'mp3', 'mp2', 'aac' and 'aacp'.
+server. Supported formats are 'vorbis', 'opus', 'mp3', 'mp2', 'aac' and 'aacp'.
 .TP
 .I bitrateMode
 The bit rate mode of the encoding, either "cbr", "abr" or "vbr",
 standing for constant bit rate, average bit rate and variable bit
 respectively. Use the bitrate and/or quality values to specify details
-of the appropriate bit rate mode.
+of the appropriate bit rate mode. Ogg Opus only supports 'cbr' and 'abr'.
 .TP
 .I bitrate
 Bit rate to encode to in kBits / sec (e.g. 96). Only used when cbr or
@@ -276,7 +276,8 @@ Optional values:
 .TP
 .I sampleRate
 The sample rate of the encoded output. If not specified, defaults
-to the value of the input sample rate.
+to the value of the input sample rate.  Please note that Ogg Opus
+only supports 48kHz sample rate, and will resample to this rate.
 .TP
 .I channel
 Number of channels for the output (e.g. 1 for mono, 2 for stereo).
@@ -452,7 +453,8 @@ Required values:
 
 .TP
 .I format
-Format to encode in. Must be either 'mp3', 'mp2', 'vorbis', 'aac' or 'aacp'.
+Format to encode in. Must be either 'mp3', 'mp2', 'vorbis', 'opus', 'aac'
+or 'aacp'.
 .TP
 .I bitrateMode
 The bit rate mode of the encoding, either "cbr", "abr" or "vbr",
@@ -680,3 +682,7 @@ homepage:
 .B Ogg Vorbis
 homepage:
 .I http://www.xiph.org/ogg/vorbis/
+
+.B Ogg Opus
+homepage:
+.I http://www.opus-codec.org/

darkice/trunk/src/DarkIce.cpp

@@ -92,6 +92,10 @@
 #include "VorbisLibEncoder.h"
 #endif
 
+#ifdef HAVE_VORBIS_LIB
+#include "OpusLibEncoder.h"
+#endif
+
 #ifdef HAVE_FAAC_LIB
 #include "FaacEncoder.h"
 #endif
@@ -469,6 +473,8 @@ DarkIce :: configIceCast2 (  const Config      & config,
         str         = cs->getForSure( "format", " missing in section ", stream);
         if ( Util::strEq( str, "vorbis") ) {
             format = IceCast2::oggVorbis;
+        } else if ( Util::strEq( str, "opus") ) {
+            format = IceCast2::oggOpus;
         } else if ( Util::strEq( str, "mp3") ) {
             format = IceCast2::mp3;
         } else if ( Util::strEq( str, "mp2") ) {
@@ -638,6 +644,28 @@ DarkIce :: configIceCast2 (  const Config      & config,
 #endif // HAVE_VORBIS_LIB
                 break;
 
+            case IceCast2::oggOpus:
+#ifndef HAVE_OPUS_LIB
+                throw Exception( __FILE__, __LINE__,
+                                "DarkIce not compiled with Ogg Opus support, "
+                                "thus can't Ogg Opus stream: ",
+                                stream);
+#else
+
+                encoder = new OpusLibEncoder(
+                                               audioOuts[u].server.get(),
+                                               dsp.get(),
+                                               bitrateMode,
+                                               bitrate,
+                                               quality,
+                                               sampleRate,
+                                               dsp->getChannel(),
+                                               maxBitrate);
+
+                audioOuts[u].encoder = new BufferedSink(encoder, bufferSize, dsp->getBitsPerSample() / 8);
+#endif // HAVE_OPUS_LIB
+                break;
+
             case IceCast2::mp2:
 #ifndef HAVE_TWOLAME_LIB
                 throw Exception( __FILE__, __LINE__,
@@ -937,6 +965,7 @@ DarkIce :: configFileCast (  const Config      & config )
 
         format      = cs->getForSure( "format", " missing in section ", stream);
         if ( !Util::strEq( format, "vorbis")
+          && !Util::strEq( format, "opus")
           && !Util::strEq( format, "mp3")
           && !Util::strEq( format, "mp2")
           && !Util::strEq( format, "aac")
@@ -1083,6 +1112,22 @@ DarkIce :: configFileCast (  const Config      & config )
                                                     dsp->getSampleRate(),
                                                     dsp->getChannel() );
 #endif // HAVE_VORBIS_LIB
+        } else if ( Util::strEq( format, "opus") ) {
+#ifndef HAVE_OPUS_LIB
+                throw Exception( __FILE__, __LINE__,
+                                "DarkIce not compiled with Ogg Opus support, "
+                                "thus can't Ogg Opus stream: ",
+                                stream);
+#else
+                audioOuts[u].encoder = new OpusLibEncoder(
+                                                    audioOuts[u].server.get(),
+                                                    dsp.get(),
+                                                    bitrateMode,
+                                                    bitrate,
+                                                    quality,
+                                                    dsp->getSampleRate(),
+                                                    dsp->getChannel() );
+#endif // HAVE_OPUS_LIB
         } else if ( Util::strEq( format, "aac") ) {
 #ifndef HAVE_FAAC_LIB
                 throw Exception( __FILE__, __LINE__,

darkice/trunk/src/IceCast2.cpp

@@ -153,6 +153,10 @@ IceCast2 :: sendLogin ( void )                           throw ( Exception )
             str = "application/ogg";
             break;
 
+        case oggOpus:
+            str = "application/ogg";
+            break;
+
         case aac:
             str = "audio/aac";
             break;

darkice/trunk/src/IceCast2.h

@@ -63,7 +63,7 @@ class IceCast2 : public CastSink
         /**
          *  Type for specifying the format of the stream.
          */
-       enum StreamFormat { mp3, mp2, oggVorbis, aac, aacp };
+       enum StreamFormat { mp3, mp2, oggVorbis, oggOpus, aac, aacp };
 
 
     private:

darkice/trunk/src/Makefile.am

@@ -1,9 +1,9 @@
 bin_PROGRAMS = darkice
 AM_CXXFLAGS = -O2 -pedantic -Wall @DEBUG_CXXFLAGS@ @PTHREAD_CFLAGS@
 			  @JACK_CFLAGS@ 
-INCLUDES = @LAME_INCFLAGS@ @VORBIS_INCFLAGS@ @FAAC_INCFLAGS@ @AACPLUS_INCFLAGS@ @TWOLAME_INCFLAGS@ \
+INCLUDES = @LAME_INCFLAGS@ @VORBIS_INCFLAGS@ @OPUS_INCFLAGS@ @FAAC_INCFLAGS@ @AACPLUS_INCFLAGS@ @TWOLAME_INCFLAGS@ \
 		@ALSA_INCFLAGS@ @PULSEAUDIO_INCFLAGS@ @JACK_INCFLAGS@ @SRC_INCFLAGS@
-LDADD = @PTHREAD_LIBS@ @LAME_LDFLAGS@ @VORBIS_LDFLAGS@ @FAAC_LDFLAGS@ @AACPLUS_LDFLAGS@ @TWOLAME_LDFLAGS@ \
+LDADD = @PTHREAD_LIBS@ @LAME_LDFLAGS@ @VORBIS_LDFLAGS@ @OPUS_LDFLAGS@ @FAAC_LDFLAGS@ @AACPLUS_LDFLAGS@ @TWOLAME_LDFLAGS@ \
 		@ALSA_LDFLAGS@ @PULSEAUDIO_LDFLAGS@ @JACK_LDFLAGS@ @SRC_LDFLAGS@
 
 if HAVE_SRC_LIB
@@ -48,6 +48,8 @@ darkice_SOURCES =   AudioEncoder.h\
                     TwoLameLibEncoder.h\
                     VorbisLibEncoder.cpp\
                     VorbisLibEncoder.h\
+                    OpusLibEncoder.cpp\
+                    OpusLibEncoder.h\
                     FaacEncoder.cpp\
                     FaacEncoder.h\
                     aacPlusEncoder.cpp\