sdl: fix freeze on startup on PP targets

Using the coprocessor was a good idea in theory, but didn't actually work.
This moves all SDL threads to the main core, which isn't ideal, but at
least works. Additionally, this also adds some good-practice stuff such as
setting the default sample rate on exit.

Change-Id: If1636b33d439000ec7c4e50f46e8d002708d3121

3 files changed, 4 insertions, 2 deletions

diff --git a/apps/plugins/sdl/SDL_mixer/mixer.c b/apps/plugins/sdl/SDL_mixer/mixer.c
index a24a0e7c1d..32c6c8449f 100644
--- a/apps/plugins/sdl/SDL_mixer/mixer.c
+++ b/apps/plugins/sdl/SDL_mixer/mixer.c
@@ -412,7 +412,8 @@ int Mix_OpenAudio(int frequency, Uint16 format, int nchannels, int chunksize)
                         return(0);
                 }
                 while ( audio_opened ) {
-                        Mix_CloseAudio();
+                    Mix_CloseAudio();
+                    rb->yield();
                 }
         }
 
diff --git a/apps/plugins/sdl/src/audio/rockbox/SDL_rockboxaudio.c b/apps/plugins/sdl/src/audio/rockbox/SDL_rockboxaudio.c
index 2df820bee5..05b6c55853 100644
--- a/apps/plugins/sdl/src/audio/rockbox/SDL_rockboxaudio.c
+++ b/apps/plugins/sdl/src/audio/rockbox/SDL_rockboxaudio.c
@@ -222,6 +222,7 @@ static void ROCKBOXAUD_CloseAudio(_THIS)
             SDL_FreeAudioMem(this->hidden->rb_buf[i]);
     }
     rb->pcm_play_stop();
+    rb->pcm_set_frequency(HW_SAMPR_DEFAULT);
 }
 
 static int ROCKBOXAUD_OpenAudio(_THIS, SDL_AudioSpec *spec)
diff --git a/apps/plugins/sdl/src/thread/rockbox/SDL_systhread.c b/apps/plugins/sdl/src/thread/rockbox/SDL_systhread.c
index 214cbe4597..f9dc877815 100644
--- a/apps/plugins/sdl/src/thread/rockbox/SDL_systhread.c
+++ b/apps/plugins/sdl/src/thread/rockbox/SDL_systhread.c
@@ -58,7 +58,7 @@ int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
     thread->handle = rb->create_thread(rbsdl_runthread, stacks[threadnum], DEFAULT_STACK_SIZE,
                                        0, names[threadnum] /* collisions allowed? */
                                        IF_PRIO(, PRIORITY_USER_INTERFACE)
-                                       IF_COP(, COP));
+                                       IF_COP(, CPU));
 
     threadnum++;