A library for decoding audio in Sony's LDAC format
License: MIT License
this is an early stage, jet functional LDAC audio stream decoder.
Shout-out to @Thealexbarney for the heavy lifting. LDAC is basically a stripped down, streaming only ATRAC9.
$ makesee ldacdec.c for example usage
takes an LDAC stream and decodes it to WAV
uses Android LDAC encoder library to create LDAC streams from audio
Please add a license so this can actually be used and worked on.
I have a piece of test audio here. After encoding and then decoding, the audio is different from the original audio. Part of the decoded audio is noise.
test_wav.zip
test.wav
test_decode.wav
I have a 48KHz 24bit audio file, after LDAC conversion, it becomes 16bit.
Hi
I'm trying to compile libldacdec. I started with
git clone https://github.com/hegdi/libldacdec.git
cd libldacdec
git submodule init
git submodule update
make
this is the output:
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -c -o ldacdec.o ldacdec.c
ldacdec.c: In function ‘main’:
ldacdec.c:68:9: warning: unused variable ‘blockId’ [-Wunused-variable]
int blockId = 0;
^~~~~~~
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o libldacdec.o libldacdec.c
libldacdec.c: In function ‘ldacNullPacket’:
libldacdec.c:520:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o bit_allocation.o bit_allocation.c
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o huffCodes.o huffCodes.c
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o bit_reader.o bit_reader.c
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o utility.o utility.c
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o imdct.o imdct.c
gcc -MMD -MP -O3 -g -march=native -DVERSION="\"bbba\"" -std=gnu11 -Wall -Wextra -Ilibldac/inc -Ilibldac/src -fpic -c -o spectrum.o spectrum.c
gcc -L. -Wl,-rpath=. -shared -fpic -Wl,-soname,libldacdec.so.1 -o libldacdec.so libldacdec.o bit_allocation.o huffCodes.o bit_reader.o utility.o imdct.o spectrum.o -lm -lldacdec -lsndfile
./libldacdec.so: file not recognized: File truncated
collect2: error: ld returned 1 exit status
Makefile:44: recipe for target 'libldacdec.so' failed
make: *** [libldacdec.so] Error 1
I'm trying to compile on debian stretch. Am I missing something? Any help appreciated! Thanks a lot.
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