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authorMatthias P. Braendli <matthias.braendli@mpb.li>2014-03-07 21:29:40 +0100
committerMatthias P. Braendli <matthias.braendli@mpb.li>2014-03-07 21:29:40 +0100
commit3c29cea8759ebc482c88f0816fc27beaaba875c9 (patch)
tree9a84da69eebeb4358945d7d235863fe200b1bef9
parent505689e260606bf9be02221794cb17e40359f62c (diff)
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update README
-rw-r--r--.gitignore6
-rw-r--r--README.md68
2 files changed, 62 insertions, 12 deletions
diff --git a/.gitignore b/.gitignore
index a882555..fe88485 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ config.guess
config.log
config.status
config.sub
+compile
depcomp
install-sh
libtool
@@ -26,3 +27,8 @@ m4/lt~obsolete.m4
missing
stamp-h1
aac-enc
+mot-encoder
+aac-enc-dabplus
+aac-enc-dabplus-zmq
+dabplus-zmq
+alsa-dabplus-zmq
diff --git a/README.md b/README.md
index cd9c104..93e1190 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,20 @@
fdk-aac-dabplus
===============
-A standalone library of the Fraunhofer FDK AAC code from Android.
+A standalone library of the Fraunhofer FDK AAC code from Android, patched for
+960-transform. Used for DAB+ broadcast encoding.
-This is 960-frames version of codec. Used for DAB+ boradcast encoding.
+Also includes a version with a ODR-DabMux compatible ZeroMQ output.
+There is experimental support for DAB MOT Slideshow and DLS, written by
+CSP http://rd.csp.it
-Usage:
-aac-enc-dabplus [OPTION...]
+Usage:
- -b, --bitrate={ 8, 16, ..., 192 } Output bitrate in kbps. Must be 8 multiple.
+ aac-enc-dabplus [OPTION...]
+
+ -b, --bitrate={ 8, 16, ..., 192 } Output bitrate in kbps. Must be multiple of 8.
-i, --input=FILENAME Input filename (default: stdin).
-o, --output=FILENAME Output filename (default: stdout).
-a, --afterburner Turn on AAC encoder quality increaser.
@@ -19,27 +23,67 @@ aac-enc-dabplus [OPTION...]
-r, --rate={ 32000, 48000 } Sample rate for raw input (default: 48000).
+The encoder with ZeroMQ output has the same options as above,
+but takes a zmq destination url as output
+
+See
+ aac-enc-dabplus-zmq -h
+
How to build
-===============
+=============
+
+Requirements:
+* boost-thread and boost-system
+* ImageMagick magickwand (for MOT slideshow)
* Download code and unpack it.
-* Download and install libfec from crc.ca website: http://mmbtools.crc.ca/content/view/39/65/ (follow instructions on that website).
-* do "./configure --enable-example", then "make" and "make install"
-* use aac-enc-dabplus to encode live stream or file.
+* Download and install libfec from https://github.com/Opendigitalradio/ka9q-fec
+* do "./configure", then "make" and "make install"
+* use aac-enc-dabplus or aac-enc-dabplus-zmq to encode live stream or file.
+* use mot-encoder to encode images into MOT Slideshow
How to use
-===============
+==========
+
+Scenario 1
+----------
-Scenario 1 (Live Stream enconding and preparing for DAB muxer):
+Live Stream encoding and preparing for DAB muxer, with ZMQ output, at 32kHz, using sox.
+
+ ALSASRC="default"
+ DST="tcp://yourserver:9000"
+ BITRATE=64
+
+ sox -t alsa $ALSASRC -b 16 -t raw - rate 32k channels 2 | \
+ ../fdk-aac-dabplus/aac-enc-dabplus-zmq -r 32000 \
+ -i /dev/stdin -b $BITRATE -f raw -a -o $DST -p 4
+
+Scenario 2
+----------
+Live Stream encoding and preparing for DAB muxer, with FIFO to odr-dabmux, 48kHz, using
+arecord.
arecord -t raw -f S16_LE -c 2 -r 48000 -D plughw:CARD=Loopback,DEV=0,SUBDEV=0 | \
aac-enc-dabplus -b 24 -f raw -c 2 -r 48000 -i /dev/stdin -o /dev/stdout 2>/dev/null | \
mbuffer -q -m 10k -P 100 -s 360 > station1.fifo
-Scenario 2 (Wave file enconding):
+Scenario 3
+----------
+Wave file encoding, for non-realtime processing
aac-enc-dabplus -a -b 64 -i wave_file.wav -o station1.dabp
+Usage of MOT Slideshow
+======================
+
+MOT Slideshow is an experimental feature. The mot-encoder reads images in the specified folder,
+and generates the PAD data for the encoder. This is communicated through a unique fifo in /tmp,
+therefore only one instance can run on a single machine.
+
+Only aac-enc-dabplus-zmq inserts the PAD data from mot-encoder into the bitstream.
+
+This is an ongoing development.
+