adx: add an adx muxer

Changelog

@@ -108,7 +108,7 @@ easier to use. The changes are:
 - Discworld II BMV decoding support
 - VBLE Decoder
 - OS X Video Decoder Acceleration (VDA) support
-- CRI ADX audio format demuxer
+- CRI ADX audio format muxer and demuxer
 - Playstation Portable PMP format demuxer
 - PCM format support in OMA demuxer
 - CLJR encoder

doc/general.texi

@@ -122,7 +122,7 @@ library:
 @item Brute Force & Ignorance   @tab   @tab X
     @tab Used in the game Flash Traffic: City of Angels.
 @item BWF                       @tab X @tab X
-@item CRI ADX                   @tab   @tab X
+@item CRI ADX                   @tab X @tab X
     @tab Audio-only format used in console video games.
 @item Discworld II BMV          @tab   @tab X
 @item Interplay C93             @tab   @tab X

libavformat/Makefile

@@ -22,6 +22,7 @@ OBJS-$(CONFIG_AAC_DEMUXER)               += aacdec.o rawdec.o
 OBJS-$(CONFIG_AC3_DEMUXER)               += ac3dec.o rawdec.o
 OBJS-$(CONFIG_AC3_MUXER)                 += rawenc.o
 OBJS-$(CONFIG_ADX_DEMUXER)               += adxdec.o
+OBJS-$(CONFIG_ADX_MUXER)                 += rawenc.o
 OBJS-$(CONFIG_ADTS_MUXER)                += adtsenc.o
 OBJS-$(CONFIG_AEA_DEMUXER)               += aea.o pcm.o
 OBJS-$(CONFIG_AIFF_DEMUXER)              += aiffdec.o riff.o pcm.o

libavformat/allformats.c

@@ -52,7 +52,7 @@ void av_register_all(void)
     REGISTER_DEMUXER  (AAC, aac);
     REGISTER_MUXDEMUX (AC3, ac3);
     REGISTER_MUXER    (ADTS, adts);
-    REGISTER_DEMUXER  (ADX, adx);
+    REGISTER_MUXDEMUX (ADX, adx);
     REGISTER_DEMUXER  (AEA, aea);
     REGISTER_MUXDEMUX (AIFF, aiff);
     REGISTER_MUXDEMUX (AMR, amr);

libavformat/rawenc.c

@@ -45,6 +45,18 @@ AVOutputFormat ff_ac3_muxer = {
 };
 #endif
 
+#if CONFIG_ADX_MUXER
+AVOutputFormat ff_adx_muxer = {
+    .name              = "adx",
+    .long_name         = NULL_IF_CONFIG_SMALL("CRI ADX"),
+    .extensions        = "adx",
+    .audio_codec       = CODEC_ID_ADPCM_ADX,
+    .video_codec       = CODEC_ID_NONE,
+    .write_packet      = ff_raw_write_packet,
+    .flags             = AVFMT_NOTIMESTAMPS,
+};
+#endif
+
 #if CONFIG_DIRAC_MUXER
 AVOutputFormat ff_dirac_muxer = {
     .name              = "dirac",