MIX_SetTrackRawCallback(3)

📦
version 3.2.4 · 2 versions
, in fedora 44

✨ MIX_SetTrackRawCallback ✨ (from the SDL_mixer3 fam, bestie 💖)

okay so imagine you're deep in SDL_mixer3 and you need a lil heads-up right when a track gets its first decoded audio?? that's literally this function, and she's iconic for it 💅

🌸 NAME 🌸

MIX_SetTrackRawCallback — sets up a callback that fires the moment a MIX_Track has initial decoded audio. like, the raw stuff, before anything else touches it ✨

🎀 SYNOPSIS 🎀

#include <SDL3_mixer/SDL_mixer.h>

bool MIX_SetTrackRawCallback(MIX_Track *track, MIX_TrackMixCallback cb, void *userdata);

🦋 DESCRIPTION 🦋

so here's the tea, bestie ☕ — when a track needs to mix more data, it pulls from its input (think a MIX_Audio, an SDL_AudioStream, etc.). and that input might be a compressed file format, like MP3, so a little more data gets uncompressed out of it.

once the track has PCM data to start operating on, it can fire a callback before any changes to the raw PCM input have happened. the way that matters: it lets an app peek at the data before it's gone through transformations like gain, 3D positioning, fading, etc. and honestly? it can also change the data in any way it pleases during this callback — the mixer will just continue as if this data came directly from the input. no hesitation, no drama 🫶

each track has its own unique raw callback. that's right, your callback, your track, main character energy only 👑

passing a NULL callback here is legal, bestie — it just disables this track's callback. not a problem, not an error, just vibes off 🚫✨

💜 FUNCTION PARAMETERS 💜

  • track — the track you're assigning this callback to. your girl. your track. 💖
  • cb — the function to call when the track mixes. may be NULL. no cap.
  • userdata — an opaque pointer handed over to the callback for its own personal use. like, it's your lil secret stash of data, the callback does whatever it wants with it 🙈

⭐ RETURN VALUE ⭐

returns true on success or false on failure — and if it fails, call SDL_GetError() for more info, periodt. go get the receipts 🔍

🌈 AVAILABILITY 🌈

this function is available since SDL_mixer 3.0.0. she's been here. she's a legend. 💅

👑 SEE ALSO 👑

and that's the whole page, bestie!! source says this is SDL_mixer 3.2.4, and it's a certified classic from the SDL_mixer manual 💖 mwah, go forth and callback responsibly, ily, bye!! 🦋✨💅

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