Convert elements to use gst_pad_use_explicit_caps() where appropriate.

Original commit message from CVS:
Convert elements to use gst_pad_use_explicit_caps() where appropriate.

11 files changed, 82 insertions, 79 deletions

diff --git a/ChangeLog b/ChangeLog
index 156f7af8..fa195725 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,55 @@
+2004-01-01  David Schleef  <ds@schleef.org>
+
+	Convert elements to use gst_pad_use_explicit_caps() where
+	appropriate:
+	* ext/a52dec/gsta52dec.c: (gst_a52dec_init), (gst_a52dec_reneg):
+	* ext/audiofile/gstafparse.c: (gst_afparse_init),
+	(gst_afparse_open_file):
+	* ext/audiofile/gstafsrc.c: (gst_afsrc_init),
+	(gst_afsrc_open_file):
+	* ext/esd/esdmon.c: (gst_esdmon_init), (gst_esdmon_get):
+	* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_init),
+	(gst_ffmpegdec_chain):
+	* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_loop):
+	* ext/flac/gstflacdec.c: (gst_flacdec_init), (gst_flacdec_write):
+	* ext/gdk_pixbuf/gstgdkpixbuf.c: (gst_gdk_pixbuf_init),
+	(gst_gdk_pixbuf_chain):
+	* ext/jpeg/gstjpegdec.c: (gst_jpegdec_init), (gst_jpegdec_link),
+	(gst_jpegdec_chain):
+	* ext/mad/gstmad.c: (gst_mad_init), (gst_mad_chain):
+	* ext/mikmod/gstmikmod.c: (gst_mikmod_init),
+	(gst_mikmod_negotiate):
+	* ext/mpeg2dec/gstmpeg2dec.c: (gst_mpeg2dec_init),
+	(gst_mpeg2dec_negotiate_format):
+	* ext/mpeg2enc/gstmpeg2enc.cc:
+	* ext/ogg/gstoggdemux.c: (gst_ogg_pad_push):
+	* ext/speex/gstspeexdec.c: (gst_speexdec_init),
+	(gst_speexdec_sinkconnect):
+	* ext/swfdec/gstswfdec.c: (gst_swfdec_loop), (gst_swfdec_init):
+	* ext/vorbis/vorbisfile.c: (gst_vorbisfile_init),
+	(gst_vorbisfile_new_link):
+	* gst/ac3parse/gstac3parse.c: (gst_ac3parse_init),
+	(gst_ac3parse_chain):
+	* gst/asfdemux/gstasfdemux.c: (gst_asf_demux_add_audio_stream),
+	(gst_asf_demux_setup_pad):
+	* gst/auparse/gstauparse.c: (gst_auparse_init),
+	(gst_auparse_chain):
+	* gst/id3/gstid3types.c: (gst_id3types_loop):
+	* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream):
+	* gst/mpeg1videoparse/gstmp1videoparse.c: (gst_mp1videoparse_init),
+	(mp1videoparse_parse_seq):
+	* gst/mpegaudioparse/gstmpegaudioparse.c: (gst_mp3parse_init),
+	(bpf_from_header):
+	* gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_parse_syshead),
+	(gst_mpeg_demux_parse_pes), (gst_mpeg_demux_lpcm_set_caps):
+	* gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_init),
+	(gst_mpeg_parse_send_data):
+	* gst/qtdemux/qtdemux.c: (gst_qtdemux_loop_header),
+	(gst_qtdemux_add_stream):
+	* gst/realmedia/rmdemux.c: (gst_rmdemux_add_stream):
+	* gst/wavparse/gstwavparse.c: (gst_wavparse_init),
+	(gst_wavparse_parse_fmt):
+
 2004-01-01  Ronald Bultje  <rbultje@ronald.bitfreak.net>
 
 	* configure.ac:
diff --git a/ext/esd/esdmon.c b/ext/esd/esdmon.c
index e2a91ed4..394220e4 100644
--- a/ext/esd/esdmon.c
+++ b/ext/esd/esdmon.c
@@ -200,6 +200,7 @@ gst_esdmon_init(GTypeInstance *instance, gpointer g_class)
       gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (esdmon), "src"),
       "src");
   gst_pad_set_get_function(esdmon->srcpad, gst_esdmon_get);
+  gst_pad_use_explicit_caps (esdmon->srcpad);
   gst_element_add_pad(GST_ELEMENT(esdmon), esdmon->srcpad);
 
   esdmon->fd = -1;
@@ -256,8 +257,7 @@ gst_esdmon_get (GstPad *pad)
   if (!GST_PAD_CAPS (pad)) {
     gint sign = (esdmon->depth == 8 ? FALSE : TRUE);
     /* set caps on src pad */
-    /* FIXME: do this dynamically */
-    if (gst_pad_try_set_caps (esdmon->srcpad,
+    if (gst_pad_set_explicit_caps (esdmon->srcpad,
 	gst_caps_new_simple ("audio/x-raw-int",
 	  "endianness", G_TYPE_INT,	G_BYTE_ORDER,
           "signed",     G_TYPE_BOOLEAN, sign,
diff --git a/ext/flac/gstflacdec.c b/ext/flac/gstflacdec.c
index 62b39bbc..5b893d66 100644
--- a/ext/flac/gstflacdec.c
+++ b/ext/flac/gstflacdec.c
@@ -190,6 +190,7 @@ gst_flacdec_init (FlacDec *flacdec)
   gst_pad_set_query_function (flacdec->srcpad, gst_flacdec_src_query);
   gst_pad_set_event_mask_function (flacdec->srcpad, gst_flacdec_get_src_event_masks);
   gst_pad_set_event_function (flacdec->srcpad, gst_flacdec_src_event);
+  gst_pad_use_explicit_caps (flacdec->srcpad);
 
   flacdec->decoder = FLAC__seekable_stream_decoder_new ();
   flacdec->total_samples = 0;
@@ -473,7 +474,7 @@ gst_flacdec_write (const FLAC__SeekableStreamDecoder *decoder,
   }
   
   if (!GST_PAD_CAPS (flacdec->srcpad)) {
-    gst_pad_try_set_caps (flacdec->srcpad,
+    gst_pad_set_explicit_caps (flacdec->srcpad,
         gst_caps_new_simple ("audio/x-raw-int",
           "endianness",  G_TYPE_INT, G_BYTE_ORDER,
           "signed",      G_TYPE_BOOLEAN, TRUE,
diff --git a/ext/gdk_pixbuf/gstgdkpixbuf.c b/ext/gdk_pixbuf/gstgdkpixbuf.c
index 1034de65..f85a7bf9 100644
--- a/ext/gdk_pixbuf/gstgdkpixbuf.c
+++ b/ext/gdk_pixbuf/gstgdkpixbuf.c
@@ -228,6 +228,7 @@ gst_gdk_pixbuf_init (GstGdkPixbuf *filter)
   gst_pad_set_getcaps_function (filter->sinkpad, gst_gdk_pixbuf_sink_getcaps);
   filter->srcpad = gst_pad_new_from_template (
       gst_static_pad_template_get( &gst_gdk_pixbuf_src_template), "src");
+  gst_pad_use_explicit_caps (filter->srcpad);
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -278,7 +279,7 @@ gst_gdk_pixbuf_chain (GstPad *pad, GstData *_data)
         "height", G_TYPE_INT, filter->height,
         "framerate", G_TYPE_DOUBLE, 0., NULL);
 
-    gst_pad_try_set_caps(filter->srcpad, caps);
+    gst_pad_set_explicit_caps (filter->srcpad, caps);
   }
 
   outbuf = gst_buffer_new();
diff --git a/ext/jpeg/gstjpegdec.c b/ext/jpeg/gstjpegdec.c
index 9c9af750..1598f008 100644
--- a/ext/jpeg/gstjpegdec.c
+++ b/ext/jpeg/gstjpegdec.c
@@ -167,6 +167,7 @@ gst_jpegdec_init (GstJpegDec *jpegdec)
   gst_pad_set_chain_function(jpegdec->sinkpad,gst_jpegdec_chain);
   gst_pad_set_link_function(jpegdec->sinkpad, gst_jpegdec_link);
   jpegdec->srcpad = gst_pad_new_from_template (jpegdec_src_template, "src");
+  gst_pad_use_explicit_caps (jpegdec->srcpad);
   gst_element_add_pad(GST_ELEMENT(jpegdec),jpegdec->srcpad);
 
   /* initialize the jpegdec decoder state */
@@ -201,6 +202,7 @@ gst_jpegdec_link (GstPad *pad, const GstCaps *caps)
 {
   GstJpegDec *jpegdec = GST_JPEGDEC (gst_pad_get_parent (pad));
   GstStructure *structure;
+  GstCaps *srccaps;
 
   structure = gst_caps_get_structure (caps, 0);
 
@@ -208,14 +210,18 @@ gst_jpegdec_link (GstPad *pad, const GstCaps *caps)
   gst_structure_get_int (structure, "width",     &jpegdec->width);
   gst_structure_get_int (structure, "height",    &jpegdec->height);
 
-  caps = gst_caps_new_simple ("video/x-raw-yuv",
+  srccaps = gst_caps_new_simple ("video/x-raw-yuv",
       "format",    GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I','4','2','0'),
       "width",     G_TYPE_INT, jpegdec->width,
       "height",    G_TYPE_INT, jpegdec->height,
       "framerate", G_TYPE_DOUBLE, jpegdec->fps,
       NULL);
 
-  return gst_pad_try_set_caps (jpegdec->srcpad, caps);
+  /* at this point, we're pretty sure that this will be the output
+   * format, so we'll set it. */
+  gst_pad_set_explicit_caps (jpegdec->srcpad, srccaps);
+
+  return GST_PAD_LINK_OK;
 }
 
 /* shamelessly ripped from jpegutils.c in mjpegtools */
@@ -404,7 +410,7 @@ gst_jpegdec_chain (GstPad *pad, GstData *_data)
     jpegdec->line[2] = g_realloc(jpegdec->line[2], height*sizeof(char*));
     jpegdec->height = height;
 
-    gst_pad_try_set_caps (jpegdec->srcpad,
+    gst_pad_set_explicit_caps (jpegdec->srcpad,
         gst_caps_new_simple ("video/x-raw-yuv",
           "format",    GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I','4','2','0'),
           "width",     G_TYPE_INT, width,
diff --git a/ext/mikmod/gstmikmod.c b/ext/mikmod/gstmikmod.c
index d624f49e..7720fbee 100644
--- a/ext/mikmod/gstmikmod.c
+++ b/ext/mikmod/gstmikmod.c
@@ -188,6 +188,7 @@ gst_mikmod_init (GstMikMod *filter)
       gst_static_pad_template_get (&mikmod_sink_factory),"sink");
   filter->srcpad = gst_pad_new_from_template(
     gst_static_pad_template_get (&mikmod_src_factory),"src");
+  gst_pad_use_explicit_caps (filter->srcpad);
 
   gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad);
   gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad);
@@ -226,7 +227,7 @@ gst_mikmod_negotiate (GstMikMod *mikmod)
     sign = FALSE;
   }
 
-  return gst_pad_try_set_caps (mikmod->srcpad,
+  return gst_pad_set_explicit_caps (mikmod->srcpad,
       gst_caps_new_simple ( "audio/x-raw-int",
 	"endianness",  G_TYPE_INT, G_BYTE_ORDER,
 	"signed",      G_TYPE_BOOLEAN, sign,
diff --git a/ext/speex/gstspeexdec.c b/ext/speex/gstspeexdec.c
index 5e249a73..a5ab788e 100644
--- a/ext/speex/gstspeexdec.c
+++ b/ext/speex/gstspeexdec.c
@@ -138,6 +138,7 @@ gst_speexdec_init (GstSpeexDec *speexdec)
   gst_pad_set_link_function (speexdec->sinkpad, gst_speexdec_sinkconnect);
 
   speexdec->srcpad = gst_pad_new_from_template (speexdec_src_template, "src");
+  gst_pad_use_explicit_caps (speexdec->srcpad);
   gst_element_add_pad (GST_ELEMENT (speexdec), speexdec->srcpad);
 
 }
@@ -154,7 +155,7 @@ gst_speexdec_sinkconnect (GstPad *pad, const GstCaps *caps)
   structure = gst_caps_get_structure (caps, 0);
   gst_structure_get_int  (structure, "rate", &rate);
 
-  if (gst_pad_try_set_caps (speexdec->srcpad, 
+  if (gst_pad_set_explicit_caps (speexdec->srcpad, 
         gst_caps_new_simple ("audio/x-raw-int",
           "endianness", G_TYPE_INT, G_BYTE_ORDER,
           "signed",     G_TYPE_BOOLEAN, TRUE,
diff --git a/gst/auparse/gstauparse.c b/gst/auparse/gstauparse.c
index d4f50644..570a2b6b 100644
--- a/gst/auparse/gstauparse.c
+++ b/gst/auparse/gstauparse.c
@@ -135,6 +135,7 @@ gst_auparse_init (GstAuParse *auparse)
   auparse->srcpad = gst_pad_new_from_template (
       gst_static_pad_template_get (&gst_auparse_src_template), "src");
   gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad);
+  gst_pad_use_explicit_caps (auparse->srcpad);
 
   auparse->offset = 0;
   auparse->size = 0;
@@ -251,9 +252,8 @@ gst_auparse_chain (GstPad *pad, GstData *_data)
 	  "signed",     G_TYPE_BOOLEAN, sign, NULL);
     }
 
-    if (gst_pad_try_set_caps (auparse->srcpad, tempcaps) <= 0) {
+    if (!gst_pad_set_explicit_caps (auparse->srcpad, tempcaps)) {
       gst_buffer_unref (buf);
-      gst_element_error (GST_ELEMENT (auparse), "could not set audio caps");
       return;
     }
 
diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c
index 0d222fe7..d3764457 100644
--- a/gst/matroska/matroska-demux.c
+++ b/gst/matroska/matroska-demux.c
@@ -868,12 +868,6 @@ gst_matroska_demux_add_stream (GstMatroskaDemux *demux)
   /* the pad in here */
   context->pad =  gst_pad_new_from_template (templ, padname);
 
-  if (caps != NULL) {
-    if (gst_pad_try_set_caps (context->pad, caps) <= 0) {
-      GST_WARNING ("Failed to set caps on next element for %s",
-		   padname); 
-    }
-  }
   g_free (padname);
 
   /* set some functions */
@@ -887,9 +881,12 @@ gst_matroska_demux_add_stream (GstMatroskaDemux *demux)
 				   gst_matroska_demux_get_src_query_types);
   gst_pad_set_query_function (context->pad,
 			      gst_matroska_demux_handle_src_query);
+  gst_pad_use_explicit_caps (context->pad);
 
   gst_element_add_pad (GST_ELEMENT (demux), context->pad);
 
+  gst_pad_set_explicit_caps (context->pad, caps);
+
   /* tadaah! */
   return TRUE;
 }
diff --git a/gst/qtdemux/qtdemux.c b/gst/qtdemux/qtdemux.c
index 659c968b..4361dd24 100644
--- a/gst/qtdemux/qtdemux.c
+++ b/gst/qtdemux/qtdemux.c
@@ -504,7 +504,7 @@ static void gst_qtdemux_loop_header (GstElement *element)
 	  gst_caps_set_simple (stream->caps, "framerate", G_TYPE_DOUBLE, fps,
 	      NULL);
           stream->fps = fps;
-          gst_pad_try_set_caps(stream->pad, stream->caps);
+          gst_pad_set_explicit_caps(stream->pad, stream->caps);
         }
       }
 
@@ -522,52 +522,6 @@ static void gst_qtdemux_loop_header (GstElement *element)
 
 }
 
-static GstCaps *gst_qtdemux_src_getcaps(GstPad *pad)
-{
-  GstQTDemux *qtdemux;
-  QtDemuxStream *stream;
-
-  GST_DEBUG ("gst_qtdemux_src_getcaps");
-
-  qtdemux = GST_QTDEMUX(gst_pad_get_parent(pad));
-
-  g_return_val_if_fail(GST_IS_QTDEMUX(qtdemux), NULL);
-
-  stream = GST_PAD_ELEMENT_PRIVATE (pad);
-  return gst_caps_copy(stream->caps);
-}
-
-#if 0
-/* This function doesn't do anything useful, but might be useful later */
-static GstPadLinkReturn
-gst_qtdemux_src_link(GstPad *pad, GstCaps *caps)
-{
-  GstQTDemux *qtdemux;
-  QtDemuxStream *stream;
-  int i;
-
-  GST_DEBUG ("gst_qtdemux_src_link");
-
-  qtdemux = GST_QTDEMUX(gst_pad_get_parent(pad));
-
-  GST_DEBUG ("looking for pad %p in qtdemux %p", pad, qtdemux);
-  g_return_val_if_fail(GST_IS_QTDEMUX(qtdemux), GST_PAD_LINK_REFUSED);
-
-  GST_DEBUG ("n_streams is %d", qtdemux->n_streams);
-  for(i=0;i<qtdemux->n_streams;i++){
-    stream = qtdemux->streams[i];
-    GST_DEBUG ("pad[%d] is %p", i, stream->pad);
-    if(stream->pad == pad){
-      return GST_PAD_LINK_OK;
-    }
-  }
-
-  GST_DEBUG ("Couldn't find stream cooresponding to pad\n");
-
-  return GST_PAD_LINK_REFUSED;
-}
-#endif
-
 void gst_qtdemux_add_stream(GstQTDemux *qtdemux, QtDemuxStream *stream)
 {
   if(stream->subtype == GST_MAKE_FOURCC('v','i','d','e')){
@@ -594,10 +548,7 @@ void gst_qtdemux_add_stream(GstQTDemux *qtdemux, QtDemuxStream *stream)
     qtdemux->n_audio_streams++;
   }
 
-  gst_pad_set_getcaps_function(stream->pad, gst_qtdemux_src_getcaps);
-#ifdef unused
-  gst_pad_set_link_function(stream->pad, gst_qtdemux_src_link);
-#endif
+  gst_pad_use_explicit_caps (stream->pad);
 
   GST_PAD_ELEMENT_PRIVATE(stream->pad) = stream;
   qtdemux->streams[qtdemux->n_streams] = stream;
@@ -607,12 +558,7 @@ void gst_qtdemux_add_stream(GstQTDemux *qtdemux, QtDemuxStream *stream)
   GST_DEBUG ("adding pad %p to qtdemux %p", stream->pad, qtdemux);
   gst_element_add_pad(GST_ELEMENT (qtdemux), stream->pad);
 
-  /* Note: we need to have everything set up before calling try_set_caps */
-  if(stream->caps){
-    GST_DEBUG_CAPS ("setting caps",stream->caps);
-
-    gst_pad_try_set_caps(stream->pad, stream->caps);
-  }
+  gst_pad_set_explicit_caps(stream->pad, stream->caps);
 }
 
 
diff --git a/gst/wavparse/gstwavparse.c b/gst/wavparse/gstwavparse.c
index e1b93a1b..406c2145 100644
--- a/gst/wavparse/gstwavparse.c
+++ b/gst/wavparse/gstwavparse.c
@@ -202,6 +202,7 @@ gst_wavparse_init (GstWavParse *wavparse)
   gst_pad_set_query_function (wavparse->srcpad, gst_wavparse_pad_query);
   gst_pad_set_event_function (wavparse->srcpad, gst_wavparse_srcpad_event);
   gst_pad_set_event_mask_function (wavparse->srcpad, gst_wavparse_get_event_masks);
+  gst_pad_use_explicit_caps (wavparse->srcpad);
 
   gst_element_set_loop_function (GST_ELEMENT (wavparse), gst_wavparse_loop);
 
@@ -656,11 +657,8 @@ gst_wavparse_parse_fmt (GstWavParse *wavparse)
       return;
     }
 		
-    if (gst_pad_try_set_caps (wavparse->srcpad, caps) <= 0) {
-      gst_element_error (GST_ELEMENT (wavparse), "Could not set caps");
-      return;
-    }
-		
+    gst_pad_set_explicit_caps (wavparse->srcpad, caps);
+
     GST_DEBUG ("frequency %d, channels %d",
 							 wavparse->rate, wavparse->channels);
   }