Hell all,

A friend ask me about the audio playing with SDL. I tried to do an example.

As I use Linux, with the following command, I consider all packages neeeded would be installed, but it seems that I am wrong: sudo apt-get install libsdl1.2-dev libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-ttf2.0-dev

The source was compiled, but a link.res was generated as output.

According to the link.res, the executable coud not be built becose of the lack of lsmpeg.

I don't know how to install lsmpeg.

Since my code compiles, I think is not a problem with the code. What do you suppose is wrong?

Regards,

Probably your missing the libsmpeg library. On debian it's provided by the libsmpeg0 package.

https://packages.debian.org/wheezy/libsmpeg0

It works! Thank you very much. The reason was the lacking library.

This code plays a mp3 file.

program test;
uses
sounds;
begin
PlaySound('guitar.wav');
end.
unit sounds;
interface
uses
sdl, sdl_mixer, strings;
procedure PlaySound(filename: string);
implementation
procedure PlaySound(filename: string);
var
VFilename: pchar;
VChunk: pmix_chunk;
begin
VFilename := strAlloc(length(filename) + 1);
StrPCopy(VFilename, filename);
VChunk := mix_loadWav(VFilename);
if VChunk = nil then
writeln('O arquivo não pôde ser carregado');
if mix_PlayChannel(-1, VChunk, 0) < 0 then
exit;
while mix_Playing(0) = 1 do SDL_Delay(10);
StrDispose(VFilename);
end;
initialization
sdl_init(SDL_INIT_AUDIO);
mix_OpenAudio(44100, mix_Default_format, 2, 4096);
finalization
Mix_CloseAudio;
sdl_quit;
end.

2014-03-04 5:35 GMT-03:00, Yann Mérignac :