Add an INPUT_CAP_PREVIEW mode.

This tells the demuxers if the input plugin can handle preview testing.
Most plugins which are seekable can handle it.
The current exception to this is the xine-dvdnav plugin which is seekable but not previewable due to DVDs having still pictures which stall the preview testing.

CVS patchset: 1710
CVS date: 2002/04/11 22:27:11

4 files changed, 9 insertions, 13 deletions

diff --git a/src/demuxers/demux_elem.c b/src/demuxers/demux_elem.c
index 9a46a175b..f5fc4c625 100644
--- a/src/demuxers/demux_elem.c
+++ b/src/demuxers/demux_elem.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: demux_elem.c,v 1.37 2002/04/09 03:38:00 miguelfreitas Exp $
+ * $Id: demux_elem.c,v 1.38 2002/04/11 22:27:11 jcdutton Exp $
  *
  * demultiplexer for elementary mpeg streams
  * 
@@ -220,7 +220,7 @@ static void demux_mpeg_elem_start (demux_plugin_t *this_gen,
       this->audio_fifo->put (this->audio_fifo, buf);
     }
 
-    if((this->input->get_capabilities(this->input) & INPUT_CAP_SEEKABLE) != 0) {
+    if((this->input->get_capabilities(this->input) & INPUT_CAP_PREVIEW) != 0) {
       int num_buffers = NUM_PREVIEW_BUFFERS;
     
       this->input->seek (this->input, 0, SEEK_SET);
diff --git a/src/demuxers/demux_mpeg.c b/src/demuxers/demux_mpeg.c
index 60fc67b60..4012ce48b 100644
--- a/src/demuxers/demux_mpeg.c
+++ b/src/demuxers/demux_mpeg.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: demux_mpeg.c,v 1.53 2002/04/09 03:38:00 miguelfreitas Exp $
+ * $Id: demux_mpeg.c,v 1.54 2002/04/11 22:27:11 jcdutton Exp $
  *
  * demultiplexer for mpeg 1/2 program streams
  * reads streams of variable blocksizes
@@ -760,7 +760,7 @@ static void demux_mpeg_start (demux_plugin_t *this_gen,
       this->audio_fifo->put (this->audio_fifo, buf);
     }
 
-    if ((this->input->get_capabilities (this->input) & INPUT_CAP_SEEKABLE) != 0 ) {
+    if ((this->input->get_capabilities (this->input) & INPUT_CAP_PREVIEW) != 0 ) {
 
       uint32_t w;
       int num_buffers = NUM_PREVIEW_BUFFERS;
diff --git a/src/demuxers/demux_mpeg_block.c b/src/demuxers/demux_mpeg_block.c
index b592d5c8a..0d034c1fa 100644
--- a/src/demuxers/demux_mpeg_block.c
+++ b/src/demuxers/demux_mpeg_block.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: demux_mpeg_block.c,v 1.88 2002/04/11 14:04:47 jcdutton Exp $
+ * $Id: demux_mpeg_block.c,v 1.89 2002/04/11 22:27:11 jcdutton Exp $
  *
  * demultiplexer for mpeg 1/2 program streams
  *
@@ -886,11 +886,8 @@ static void demux_mpeg_block_start (demux_plugin_t *this_gen,
     this->last_scr         = 0;
     this->nav_last_end_pts = 0;
     this->ignore_scr_discont = 0;
-/* FIXME: Preview mode disabled to make DVD still pictures work at the beginning of DVDs.
-          This is a quick and dirty fix, because I don't yet understand the need to preview mode.
- */
-/***********************************
-    if((this->input->get_capabilities(this->input) & INPUT_CAP_SEEKABLE) != 0) {
+
+    if((this->input->get_capabilities(this->input) & INPUT_CAP_PREVIEW) != 0) {
 
       int num_buffers = NUM_PREVIEW_BUFFERS;
 
@@ -903,7 +900,6 @@ static void demux_mpeg_block_start (demux_plugin_t *this_gen,
         num_buffers --;
       }
     }
-**********************************/
     this->status = DEMUX_FINISHED;
   }
   
diff --git a/src/demuxers/demux_pes.c b/src/demuxers/demux_pes.c
index 73383a934..99630901a 100644
--- a/src/demuxers/demux_pes.c
+++ b/src/demuxers/demux_pes.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: demux_pes.c,v 1.23 2002/04/09 03:38:00 miguelfreitas Exp $
+ * $Id: demux_pes.c,v 1.24 2002/04/11 22:27:11 jcdutton Exp $
  *
  * demultiplexer for mpeg 2 PES (Packetized Elementary Streams)
  * reads streams of variable blocksizes
@@ -442,7 +442,7 @@ static void demux_pes_start (demux_plugin_t *this_gen,
       this->audio_fifo->put (this->audio_fifo, buf);
     }
 
-    if ((this->input->get_capabilities (this->input) & INPUT_CAP_SEEKABLE) != 0 ) {
+    if ((this->input->get_capabilities (this->input) & INPUT_CAP_PREVIEW) != 0 ) {
 
       uint32_t w;
       int num_buffers = NUM_PREVIEW_BUFFERS;