illusion's Introduction

Illusion - Dynamic Audio Visualization

Illusion monitors sound from any source to modify and display a set of images in real time. The frequency spectrum and amplitude of the recorded sound are analyzed in order to shift the colors of the image.

Usage:

Build and run

In the Illusion directory, make and run the project:

make illusion
./illusion

If build fails, ensure you have all the required libraries installed.

Selecting a Recording Source

Illusion monitors sound on a system using PulseAudio. A sound source may be selected using the PulseAudio control GUI:

To open the GUI:
> pavucontrol

Select a recording source using the "record from" drop down menu.

Setting an Image

Set what images Illusion uses by adding them into the Illusion/Images/ folder.

Libraries Used:

PulseAudio: libpulse-dev
SDL 2 and SDL Image: libsdl2-dev, libsdl2-image-dev

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illusion's Issues

Fails to compile with error: cannot convert ‘uint8_t’ {aka ‘unsigned char’} to ‘uint32_t*’

Hi!

I tried compiling Illusion on Linux today but it doesn't compile:

# g++ -dumpversion
11

# make
g++ -O2 -Wall -std=c++11 src/pulseaudio_recorder.cpp  src/small_fft.cpp src/visualizer.cpp src/image_manipulator.cpp src/beat_detector.cpp src/main.cpp -L/usr/local/lib -lSDL2 -lSDL2_image -lpulse-simple -lpulse -lpthread -o illusion
src/image_manipulator.cpp: In member function ‘void ImageManipulator::set_image(uint32_t*, int, int)’:
src/image_manipulator.cpp:34:21: error: cannot convert ‘uint8_t*’ {aka ‘unsigned char*’} to ‘uint32_t*’ {aka ‘unsigned int*’} in assignment
   34 |         m_overlay = new uint8_t[num_pixels*3];
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                     |
      |                     uint8_t* {aka unsigned char*}
In file included from /usr/include/string.h:535,
                 from /usr/include/SDL2/SDL_stdinc.h:66,
                 from /usr/include/SDL2/SDL_main.h:25,
                 from /usr/include/SDL2/SDL.h:32,
                 from src/../include/visualizer.h:5,
                 from src/main.cpp:19:
In function ‘void* memcpy(void*, const void*, size_t)’,
    inlined from ‘int main(int, char**)’ at src/main.cpp:247:19:
/usr/include/bits/string_fortified.h:29:33: warning: ‘void* __builtin_memcpy(void*, const void*, long unsigned int)’ accessing 57344 bytes at offsets 0 and 8188 overlaps 49156 bytes at offset 8188 [-Wrestrict]
   29 |   return __builtin___memcpy_chk (__dest, __src, __len,
      |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
   30 |                                  __glibc_objsize0 (__dest));
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [Makefile:28: illusion] Error 1