Add _POSIX_THREAD_PRIORITY_SCHEDULING #ifdefs

This is optional, and some systems don't support it. POSIX defines the
_POSIX_THREAD_PRIORITY_SCHEDULING to tell that support is present.

4 files changed, 16 insertions, 0 deletions

diff --git a/src/xine-engine/audio_decoder.c b/src/xine-engine/audio_decoder.c
index dd15bf696..3d5ef7e6f 100644
--- a/src/xine-engine/audio_decoder.c
+++ b/src/xine-engine/audio_decoder.c
@@ -463,7 +463,9 @@ static void *audio_decoder_loop (void *stream_gen) {
 int _x_audio_decoder_init (xine_stream_t *stream) {
 
   pthread_attr_t       pth_attrs;
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
   struct sched_param   pth_params;
+#endif
   int                  err;
 
   if (stream->audio_out == NULL) {
@@ -501,10 +503,12 @@ int _x_audio_decoder_init (xine_stream_t *stream) {
      */
 
     pthread_attr_init(&pth_attrs);
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
     pthread_attr_getschedparam(&pth_attrs, &pth_params);
     pth_params.sched_priority = sched_get_priority_min(SCHED_OTHER);
     pthread_attr_setschedparam(&pth_attrs, &pth_params);
     pthread_attr_setscope(&pth_attrs, PTHREAD_SCOPE_SYSTEM);
+#endif
 
     stream->audio_thread_created = 1;
     if ((err = pthread_create (&stream->audio_thread,
diff --git a/src/xine-engine/audio_out.c b/src/xine-engine/audio_out.c
index 0a141e014..b9738595b 100644
--- a/src/xine-engine/audio_out.c
+++ b/src/xine-engine/audio_out.c
@@ -2284,7 +2284,9 @@ xine_audio_port_t *_x_ao_new_port (xine_t *xine, ao_driver_t *driver,
     this->audio_loop_running = 1;
 
     pthread_attr_init(&pth_attrs);
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
     pthread_attr_setscope(&pth_attrs, PTHREAD_SCOPE_SYSTEM);
+#endif
 
     this->audio_thread_created = 1;
     if ((err = pthread_create (&this->audio_thread,
diff --git a/src/xine-engine/video_decoder.c b/src/xine-engine/video_decoder.c
index 0756fc5b2..f70bb82bb 100644
--- a/src/xine-engine/video_decoder.c
+++ b/src/xine-engine/video_decoder.c
@@ -41,6 +41,10 @@
 
 #define SPU_SLEEP_INTERVAL (90000/2)
 
+#ifndef SCHED_OTHER
+#define SCHED_OTHER 0
+#endif
+
 
 static void update_spu_decoder (xine_stream_t *stream, int type) {
 
@@ -486,7 +490,9 @@ int _x_video_decoder_init (xine_stream_t *stream) {
   } else {
 
     pthread_attr_t       pth_attrs;
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
     struct sched_param   pth_params;
+#endif
     int		       err, num_buffers;
     /* The fifo size is based on dvd playback where buffers are filled
      * with 2k of data. With 500 buffers and a typical video data rate
@@ -515,10 +521,12 @@ int _x_video_decoder_init (xine_stream_t *stream) {
     stream->spu_track_map_entries = 0;
 
     pthread_attr_init(&pth_attrs);
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
     pthread_attr_getschedparam(&pth_attrs, &pth_params);
     pth_params.sched_priority = sched_get_priority_min(SCHED_OTHER);
     pthread_attr_setschedparam(&pth_attrs, &pth_params);
     pthread_attr_setscope(&pth_attrs, PTHREAD_SCOPE_SYSTEM);
+#endif
 
     stream->video_thread_created = 1;
     if ((err = pthread_create (&stream->video_thread,
diff --git a/src/xine-engine/video_out.c b/src/xine-engine/video_out.c
index cd73233c3..26ad98290 100644
--- a/src/xine-engine/video_out.c
+++ b/src/xine-engine/video_out.c
@@ -1911,7 +1911,9 @@ xine_video_port_t *_x_vo_new_port (xine_t *xine, vo_driver_t *driver, int grabon
     this->grab_only            = 0;
 
     pthread_attr_init(&pth_attrs);
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
     pthread_attr_setscope(&pth_attrs, PTHREAD_SCOPE_SYSTEM);
+#endif
 
     if ((err = pthread_create (&this->video_thread,
 			       &pth_attrs, video_out_loop, this)) != 0) {