File Merger

[tvidigal]

Hi everyone,

i would like to do a file merger to merge several audio files into one!
I sorted a Class wich Reads a complete audio file into a buffer, and a SaveAsStereo SaveAsMono functions!

but i also would need to add information for each Audio file, for example the last volume/pan settings for that file! the Idea is to have a audio library e.g 4GB, and access (quickly) to a specific audio part & info

i think i also may need a TableofContents of the BOF, don't i?

how can i achieve this!
thanks in advance

 

[tvidigal]

óoooo :-(

no answers!!! i can send the wave class if someone think that can help me with this thingy!

once again thank you very much!

Regards

 

[BillDoorNZ]

ok...I avoided this post as I'm quite busy at the moment

I would do something like:

TAudioLibHeader = record
Name: array[0..20] of char;
AudioCount: integer;
end;

TAudioLibIndex = record
AudioName: array[0..50] of char;
Artist: array[0..50] of char;
PlayLength: integer; //seconds
Offset: integer; //offset from start of file to audio files location in the library
end;

I imagine you would want to create an app that could load the Audio Library and allow you to add/remove stuff as appropriate. I won't go into it in detail as its just a matter of coding it. You would need to write the header, and then a list of indexes, calculate the offsets as you go and write it all to disk.

Hope some of that helps.

 

[tvidigal]

Hey BillDoorNz

you'r a sweet! ;-) thanks man!

you'r example its great, altough this will not be used for Albums/Artist, but for fast seeking of audio samples.

For instance i may want to load as quickly as i can 3 sounds to memory that could be all 3 in very diferent locations of the file! Plus because its a library i may need to store the Category where the Sample fits in, if its a Loop then what is the BPM and so...

with this in mind is there anything you might rember?

thanks again,

Regards

 

[tvidigal]

any more thoughts BillDoorNz?



all the best

Tiago

 

[BillDoorNZ]

I'm sure you could add whatever else you need to the TAudioLibIndex record...or create another record that is simply a header that is prepended to all audio samples and is what the TAudioLibIndex points at....

it all depends how you want to use the library...