emscripten: support building with emcc

mackron · Feb 6, 2025 · a3dbebd · a3dbebd
1 parent 68dbd8f
commit a3dbebd
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Showing 4 changed files with 31 additions and 6 deletions.
diff --git a/examples/meson.build b/examples/meson.build
@@ -242,9 +242,7 @@ if device_io.enabled() and generation
   executable(
     'simple_playback_sine',
     'simple_playback_sine.c',
-    # FIXME: simple_playback_sine.c:60:48:
-    # error: ‘struct <anonymous>’ has no member named ‘name’
-    ma_example_broken,
+    name_suffix: host_system == 'emscripten' ? 'html' : [],
     dependencies: ma_sys_deps + ma_backend_deps,
     install: false,
     implicit_include_directories: false,

diff --git a/examples/simple_playback_sine.c b/examples/simple_playback_sine.c
@@ -43,6 +43,7 @@ int main(int argc, char** argv)
     ma_waveform sineWave;
     ma_device_config deviceConfig;
     ma_device device;
+    ma_device_info deviceInfo;
     ma_waveform_config sineWaveConfig;
 
     deviceConfig = ma_device_config_init(ma_device_type_playback);
@@ -57,7 +58,9 @@ int main(int argc, char** argv)
         return -4;
     }
 
-    printf("Device Name: %s\n", device.playback.name);
+    if (ma_device_get_info(&device, ma_device_type_playback, &deviceInfo) == MA_SUCCESS) {
+        printf("Device Name: %s\n", deviceInfo.name);
+    }
 
     sineWaveConfig = ma_waveform_config_init(device.playback.format, device.playback.channels, device.sampleRate, ma_waveform_type_sine, 0.2, 220);
     ma_waveform_init(&sineWaveConfig, &sineWave);

diff --git a/extras/meson.build b/extras/meson.build
@@ -12,7 +12,11 @@ opusfile_dep = dependency('opusfile', required: get_option('libopus'))
 if opus_dep.found() and opusfile_dep.found()
   ma_all_libs += static_library(
     'miniaudio_libopus',
-    'miniaudio_libopus.c',
+    configure_file(
+      input: 'miniaudio_libopus.h',
+      output: 'miniaudio_libopus.c',
+      copy: true,
+    ),
     dependencies: ma_sys_deps + [opus_dep, opusfile_dep],
     c_args: ma_extras_c_args,
     install: false,
@@ -27,7 +31,11 @@ vorbisfile_dep = dependency('vorbisfile', required: get_option('libvorbis'))
 if vorbis_dep.found() and vorbisfile_dep.found()
   ma_all_libs += static_library(
     'miniaudio_libvorbis',
-    'miniaudio_libvorbis.c',
+    configure_file(
+      input: 'miniaudio_libvorbis.h',
+      output: 'miniaudio_libvorbis.c',
+      copy: true,
+    ),
     dependencies: ma_sys_deps + [vorbis_dep, vorbisfile_dep],
     c_args: ma_extras_c_args,
     install: false,

diff --git a/meson.build b/meson.build
@@ -145,6 +145,7 @@ if host_system in [
   'dragonfly',
   'android',
   'darwin',
+  'emscripten',
 ]
   if runtime_linking.enabled()
     ma_sys_deps += dependency('dl')
@@ -226,6 +227,21 @@ if runtime_linking.disabled()
     ma_backend_deps += dependency('OpenSLES')
   endif
 
+  # TODO: should we support non-wasm webaudio builds?
+  if 'webaudio' in backends and host_system == 'emscripten'
+    add_project_arguments(
+      '-sWASM_WORKERS=1',
+      '-DMA_ENABLE_AUDIO_WORKLETS',
+      language: ['c', 'cpp'],
+    )
+    add_project_link_arguments(
+      '-sAUDIO_WORKLET=1',
+      '-sWASM_WORKERS=1',
+      '-sASYNCIFY',
+      language: ['c', 'cpp'],
+    )
+  endif
+
   if 'sdl' in backends
     ma_backend_deps += sdl_dep
   endif