zig/mach
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

examples: play-opus: minor fixes

Browse source 
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-12-24 16:15:36 -07:00
parent f7688169c0
commit 30bba9d49e
1 changed files with 7 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

9
examples/play-opus/App.zig
View file

@ -51,7 +51,7 @@ pub fn init(
.title = "play-opus", .title = "play-opus",
}); });
// Configure the audio module to send our app's .audio_state_change event when an entity's sound // Configure the audio module to call our App.audioStateChange function when a sound buffer
// finishes playing. // finishes playing.
audio.on_state_change = app_mod.id.audioStateChange; audio.on_state_change = app_mod.id.audioStateChange;
@ -86,11 +86,16 @@ pub fn init(
std.debug.print("[arrow down] decrease volume 10%\n", .{}); std.debug.print("[arrow down] decrease volume 10%\n", .{});
} }
/// Called on the high-priority audio OS thread when the audio driver needs more audio samples, so
/// this callback should be fast to respond.
pub fn audioStateChange(audio: *mach.Audio, app: *App) !void { pub fn audioStateChange(audio: *mach.Audio, app: *App) !void {
audio.buffers.lock(); audio.buffers.lock();
defer audio.buffers.unlock(); defer audio.buffers.unlock();
// Find audio entities that are no longer playing app.bgm.lock();
defer app.bgm.unlock();
// Find audio objects that are no longer playing
var buffers = audio.buffers.slice(); var buffers = audio.buffers.slice();
while (buffers.next()) |buf_id| { while (buffers.next()) |buf_id| {
if (audio.buffers.get(buf_id, .playing)) continue; if (audio.buffers.get(buf_id, .playing)) continue;