Add a "control" method to the audio drivers, to allow pause/resume of the

playback stream and to flush buffered samples from from the audio driver.
(Currently implemented in the 'Sun' audio driver, + some untested code in the
alsa 0.9 driver).
The pause/resume method can be used by the engine to immediatelly stop playing
buffered audio samples when the video is paused.
Flushing buffered samples is useful when a video is stopped.  And it'll be
useful for better seeking support, too.

CVS patchset: 1556
CVS date: 2002/03/11 19:58:00

1 files changed, 21 insertions, 2 deletions

diff --git a/src/audio_out/audio_oss_out.c b/src/audio_out/audio_oss_out.c
index 553425927..3fcc7942f 100644
--- a/src/audio_out/audio_oss_out.c
+++ b/src/audio_out/audio_oss_out.c
@@ -17,7 +17,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
  *
- * $Id: audio_oss_out.c,v 1.58 2002/03/11 09:01:37 f1rmb Exp $
+ * $Id: audio_oss_out.c,v 1.59 2002/03/11 19:58:00 jkeil Exp $
  *
  * 20-8-2001 First implementation of Audio sync and Audio driver separation.
  * Copyright (C) 2001 James Courtier-Dutton James@superbug.demon.co.uk
@@ -79,7 +79,7 @@
 #       define AFMT_AC3         0x00000400  
 #endif
 
-#define AO_OUT_OSS_IFACE_VERSION 3
+#define AO_OUT_OSS_IFACE_VERSION 4
 
 #define AUDIO_NUM_FRAGMENTS     15
 #define AUDIO_FRAGMENT_SIZE   8192
@@ -561,6 +561,24 @@ static int ao_oss_set_property (ao_driver_t *this_gen, int property, int value)
   return ~value;
 }
 
+static int ao_oss_ctrl(ao_driver_t *this_gen, int cmd, ...) {
+  oss_driver_t *this = (oss_driver_t *) this_gen;
+
+  switch (cmd) {
+
+  case AO_CTRL_PLAY_PAUSE:
+    break;
+
+  case AO_CTRL_PLAY_RESUME:
+    break;
+
+  case AO_CTRL_FLUSH_BUFFERS:
+    break;
+  }
+
+  return 0;
+}
+
 ao_driver_t *init_audio_out_plugin (config_values_t *config) {
 
   oss_driver_t *this;
@@ -837,6 +855,7 @@ ao_driver_t *init_audio_out_plugin (config_values_t *config) {
   this->ao_driver.close               = ao_oss_close;
   this->ao_driver.exit                = ao_oss_exit;
   this->ao_driver.get_gap_tolerance   = ao_oss_get_gap_tolerance;
+  this->ao_driver.control	      = ao_oss_ctrl;
 
   return &this->ao_driver;
 }