how to use NICAM stereo

[veso266]

Hi was wondering since you added NICAM stereo :), how would I use that?, I found nothing in hacktv.c only experimental VSB modulator option (is that nicam)

also was wondering if you will support NICAM dual audio? (I was in indonesia, although they are switching ananlog off Bali still has it and instead of teletext they have Nicam there also in multi-language mode)

also here are the instructions I wrote for myself (because I forget stuff) on how to compile hacktv with Mysys2 (MinGW) on windows

1. Install FFMpeg-Dev

   1. Download FFMpeg Dev-Libs: https://ffmpeg.zeranoe.com/builds/win64/dev/ffmpeg-20180608-2bd26de-win64-dev.zip
   2. Copy *.pc files found in hacktv/pkg-config-files to msys64/mingw64/lib/pkgconfig
   3. Copy *.dll.a files found in ffmpeg-20180608-2bd26de-win64-dev/lib to msys64/mingw64/lib
   4. Copy . found in ffmpeg-20180608-2bd26de-win64-dev/include to msys64/mingw64/include

2. Install LibHackRF

   1. Find Precompiled libHackRF somewhere (or compiie it yourselif: http://hellmund.blogspot.com/2015/05/hackrf-on-windows-8.html)
   2. Copy *.pc files found in hacktv/pkg-config-files to msys64/mingw64/lib/pkgconfig

3. Compiling LibHackRF

   1. Download Precompiled FFTW: http://fftw.org/install/windows.html

   2. Download libusb1.0: https://github.com/libusb/libusb/releases/download/v1.0.22/libusb-1.0.22.7z MinGW64/dll (where we need our dll)

   3. git clone https://github.com/mossmann/hackrf.git

   4. Compiling mkdir host/build cd host/build cmake ../ -G "MSYS Makefiles" -DLIBUSB_INCLUDE_DIR=/home/Mitja/libs/libusb/include/libusb-1.0 -DLIBUSB_LIBRARIES=/home/Mitja/libs/libusb/MinGW64/dll/libusb-1.0.dll -DFFTW_LIBRARIES=/home/Mitja/libs/libfftw/fftw NO cmake ../ -G "MSYS Makefiles" -DLIBUSB_INCLUDE_DIR=../../../../libusb/include/libusb-1.0 -DLIBUSB_LIBRARIES=../../../../libusb/MinGW64/dll/libusb-1.0.dll -DFFTW_LIBRARIES=../../../../libfftw/fftw make make install

4. Compiling HackTV Modify hackrf.c rename _close and _write to _closeRF and _writeRF Modify teletext.c rename gmtime_r to gmtime_s

NF:-1,CMC California (720p) http://cmctv.ios.internapcdn.net:80/cmctv_vitalstream_com/live_1/CMC-TV/CCURstream.m3u8

EXTINF:-1,CMC Country California (480p)

http://cmctv.ios.internapcdn.net:80/cmctv_vitalstream_com/live_1/CMCUSA/CCURstream.m3u8

Example Command to play CMC Country Television on Channel 31 with teletext hacktv -f 551250000 -m b -G 1 -a -g 47 --teletext teefax http://cmctv.ios.internapcdn.net:80/cmctv_vitalstream_com/live_1/CMCUSA/CCURstream.m3u8

Test card and Teletext from vbit2: vbit2 --dir teefax | hacktv -f 855250000 -g 47 --teletext raw:/dev/stdin test

hope someone will find them usable

[fsphil]

NICAM stereo is enabled by default for PAL I, B and G.

Dual-mono is tricky as hacktv is build around there only being one single stereo channel. I'd love to try it sometime but it's not a priority at the moment.

[veso266]

also I tried to use it with vbit2 on windows like this: vbit2 --dir teefax | hacktv -f 855250000 -g 47 --teletext raw:/dev/stdin test

but windows does not have /dev/stdin so I modified teletext.c from this s->raw = fopen(path + 4, "rb"); into s->raw = fopen(stdin + 4, "rb"); but for some reason hacktv still complains: Unable to initialise video encoder.

and I got some warnings when compiling

teletext.c: In function 'tt_init':
teletext.c:1081:18: warning: passing argument 1 of 'fopen' from incompatible pointer type [-Wincompatible-pointer-types]
   s->raw = fopen(stdin + 4, "rb");
                  ^~~~~
In file included from teletext.c:33:0:
C:/msys64/mingw64/x86_64-w64-mingw32/include/stdio.h:600:17: note: expected 'const char * restrict' but argument is of type 'FILE * {aka struct _iobuf *}'
   FILE *__cdecl fopen(const char * __restrict__ _Filename,const char * __restrict__ _Mode) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;

not sure what I am doing wrong here

[fsphil]

I opened a new issue for that, please check that for a possible solution.