Add snd_pcm_pause hook

clementgallet · May 1, 2020 · d6cbdcd · d6cbdcd
1 parent ca12341
commit d6cbdcd
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Showing 3 changed files with 35 additions and 1 deletion.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -21,6 +21,7 @@
 * Add a Dockerfile and instructions to build the container
 * Add sync setting for Hollow Knight
 * Add epoll_wait hook (#321)
+* Add snd_pcm_pause hook (#321)
 
 ### Changed
 

diff --git a/src/library/audio/alsa/pcm.cpp b/src/library/audio/alsa/pcm.cpp
@@ -87,6 +87,8 @@ DEFINE_ORIG_POINTER(snd_pcm_mmap_commit);
 DEFINE_ORIG_POINTER(snd_pcm_start);
 DEFINE_ORIG_POINTER(snd_pcm_drop);
 DEFINE_ORIG_POINTER(snd_pcm_state);
+DEFINE_ORIG_POINTER(snd_pcm_hw_params_can_pause);
+DEFINE_ORIG_POINTER(snd_pcm_pause);
 DEFINE_ORIG_POINTER(snd_pcm_resume);
 DEFINE_ORIG_POINTER(snd_pcm_wait);
 DEFINE_ORIG_POINTER(snd_pcm_delay);
@@ -255,6 +257,36 @@ int snd_pcm_drop(snd_pcm_t *pcm)
     return 0;
 }
 
+int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params)
+{
+    if (GlobalState::isNative()) {
+        LINK_NAMESPACE_GLOBAL(snd_pcm_hw_params_can_pause);
+        return orig::snd_pcm_hw_params_can_pause(params);
+    }
+
+    DEBUGLOGCALL(LCF_SOUND);
+    return 1;
+}
+
+int snd_pcm_pause(snd_pcm_t *pcm, int enable)
+{
+    if (GlobalState::isNative()) {
+        LINK_NAMESPACE_GLOBAL(snd_pcm_state);
+        return orig::snd_pcm_state(pcm);
+    }
+
+    DEBUGLOGCALL(LCF_SOUND);
+
+    int sourceId = reinterpret_cast<intptr_t>(pcm);
+    auto source = audiocontext.getSource(sourceId);
+    if (enable)
+        source->state = AudioSource::SOURCE_PAUSED;
+    else
+        source->state = AudioSource::SOURCE_PLAYING;
+
+    return 0;
+}
+
 snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm)
 {
     if (GlobalState::isNative()) {

diff --git a/src/library/audio/alsa/pcm.h b/src/library/audio/alsa/pcm.h
@@ -58,7 +58,8 @@ OVERRIDE int snd_pcm_reset(snd_pcm_t *pcm);
 OVERRIDE int snd_pcm_start(snd_pcm_t *pcm);
 OVERRIDE int snd_pcm_drop(snd_pcm_t *pcm);
     // int snd_pcm_drain(snd_pcm_t *pcm);
-    // int snd_pcm_pause(snd_pcm_t *pcm, int enable);
+OVERRIDE int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params);
+OVERRIDE int snd_pcm_pause(snd_pcm_t *pcm, int enable);
 OVERRIDE snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm);
     // int snd_pcm_hwsync(snd_pcm_t *pcm);
 OVERRIDE int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp);