gst/law/: Make negotiation a bit modern.

Original commit message from CVS:
Based on patch by: mersad <mersad at axis dot com>
* gst/law/alaw-decode.c: (gst_alaw_dec_sink_setcaps),
(gst_alaw_dec_chain), (gst_alaw_dec_change_state):
* gst/law/alaw-decode.h:
* gst/law/alaw-encode.c: (gst_alaw_enc_chain):
* gst/law/mulaw-decode.c: (mulawdec_sink_setcaps),
(gst_mulawdec_chain), (gst_mulawdec_change_state):
* gst/law/mulaw-decode.h:
* gst/law/mulaw-encode.c: (gst_mulawenc_chain):
Make negotiation a bit modern.
Use pad_alloc. Fixes #525359.

ChangeLog

@@ -1,3 +1,18 @@
+2008-04-01  Wim Taymans  <wim.taymans@collabora.co.uk>
+
+	Based on patch by: mersad <mersad at axis dot com>
+
+	* gst/law/alaw-decode.c: (gst_alaw_dec_sink_setcaps),
+	(gst_alaw_dec_chain), (gst_alaw_dec_change_state):
+	* gst/law/alaw-decode.h:
+	* gst/law/alaw-encode.c: (gst_alaw_enc_chain):
+	* gst/law/mulaw-decode.c: (mulawdec_sink_setcaps),
+	(gst_mulawdec_chain), (gst_mulawdec_change_state):
+	* gst/law/mulaw-decode.h:
+	* gst/law/mulaw-encode.c: (gst_mulawenc_chain):
+	Make negotiation a bit modern.
+	Use pad_alloc. Fixes #525359.
+
 2008-03-31  David Schleef  <ds@schleef.org>
 
 	* gst/goom/xmmx.c: Fix constraints on asm code so that it

gst/law/alaw-decode.c

@@ -111,27 +111,33 @@ gst_alaw_dec_sink_setcaps (GstPad * pad, GstCaps * caps)
   GstStructure *structure;
   int rate, channels;
   gboolean ret;
+  GstCaps *outcaps;
 
   alawdec = GST_ALAW_DEC (GST_PAD_PARENT (pad));
 
   structure = gst_caps_get_structure (caps, 0);
+
   ret = gst_structure_get_int (structure, "rate", &rate);
-  ret = ret && gst_structure_get_int (structure, "channels", &channels);
+  ret &= gst_structure_get_int (structure, "channels", &channels);
   if (!ret)
     return FALSE;
 
-  if (alawdec->srccaps)
+  outcaps = gst_caps_new_simple ("audio/x-raw-int",
-    gst_caps_unref (alawdec->srccaps);
-  alawdec->srccaps = gst_caps_new_simple ("audio/x-raw-int",
       "width", G_TYPE_INT, 16,
       "depth", G_TYPE_INT, 16,
       "endianness", G_TYPE_INT, G_BYTE_ORDER,
       "signed", G_TYPE_BOOLEAN, TRUE,
       "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL);
 
-  GST_DEBUG_OBJECT (alawdec, "rate=%d, channels=%d", rate, channels);
+  ret = gst_pad_set_caps (alawdec->srcpad, outcaps);
+  gst_caps_unref (outcaps);
 
-  return TRUE;
+  if (ret) {
+    GST_DEBUG_OBJECT (alawdec, "rate=%d, channels=%d", rate, channels);
+    alawdec->rate = rate;
+    alawdec->channels = channels;
+  }
+  return ret;
 }
 
 static void
@@ -185,7 +191,7 @@ gst_alaw_dec_chain (GstPad * pad, GstBuffer * buffer)
 
   alawdec = GST_ALAW_DEC (GST_PAD_PARENT (pad));
 
-  if (G_UNLIKELY (alawdec->srccaps == NULL))
+  if (G_UNLIKELY (alawdec->rate == 0))
     goto not_negotiated;
 
   GST_LOG_OBJECT (alawdec, "buffer with ts=%" GST_TIME_FORMAT,
@@ -194,7 +200,13 @@ gst_alaw_dec_chain (GstPad * pad, GstBuffer * buffer)
   alaw_data = GST_BUFFER_DATA (buffer);
   alaw_size = GST_BUFFER_SIZE (buffer);
 
-  outbuf = gst_buffer_new_and_alloc (alaw_size * 2);
+  ret =
+      gst_pad_alloc_buffer_and_set_caps (alawdec->srcpad,
+      GST_BUFFER_OFFSET_NONE, alaw_size * 2, GST_PAD_CAPS (alawdec->srcpad),
+      &outbuf);
+  if (ret != GST_FLOW_OK)
+    goto alloc_failed;
+
   linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
 
   /* copy discont flag */
@@ -203,24 +215,29 @@ gst_alaw_dec_chain (GstPad * pad, GstBuffer * buffer)
 
   GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
   GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
-  gst_buffer_set_caps (outbuf, alawdec->srccaps);
+  gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawdec->srcpad));
 
   for (i = 0; i < alaw_size; i++) {
     linear_data[i] = alaw_to_s16 (alaw_data[i]);
   }
+  gst_buffer_unref (buffer);
 
   ret = gst_pad_push (alawdec->srcpad, outbuf);
 
-done:
-
-  gst_buffer_unref (buffer);
-
   return ret;
 
 not_negotiated:
   {
+    gst_buffer_unref (buffer);
+    GST_ERROR_OBJECT (alawdec, "no format negotiated");
     ret = GST_FLOW_NOT_NEGOTIATED;
-    goto done;
+    return ret;
+  }
+alloc_failed:
+  {
+    gst_buffer_unref (buffer);
+    GST_ERROR_OBJECT (alawdec, "pad alloc failed");
+    return ret;
   }
 }
 
@@ -241,10 +258,8 @@ gst_alaw_dec_change_state (GstElement * element, GstStateChange transition)
 
   switch (transition) {
     case GST_STATE_CHANGE_PAUSED_TO_READY:
-      if (dec->srccaps) {
+      dec->rate = 0;
-        gst_caps_unref (dec->srccaps);
+      dec->channels = 0;
-        dec->srccaps = NULL;
-      }
       break;
     default:
       break;

gst/law/alaw-decode.h

@@ -42,7 +42,8 @@ struct _GstALawDec {
   GstElement element;
 
   GstPad *sinkpad,*srcpad;
-  GstCaps *srccaps;
+  gint rate;
+  gint channels;
 };
 
 struct _GstALawDecClass {

gst/law/alaw-encode.c

@@ -462,7 +462,13 @@ gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer)
         GST_SECOND, alawenc->rate * alawenc->channels);
   }
 
-  outbuf = gst_buffer_new_and_alloc (alaw_size);
+  ret =
+      gst_pad_alloc_buffer_and_set_caps (alawenc->srcpad,
+      GST_BUFFER_OFFSET_NONE, alaw_size, GST_PAD_CAPS (alawenc->srcpad),
+      &outbuf);
+  if (ret != GST_FLOW_OK)
+    goto done;
+
   alaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
 
   /* copy discont flag */

gst/law/mulaw-decode.c

@@ -55,6 +55,7 @@ mulawdec_sink_setcaps (GstPad * pad, GstCaps * caps)
   GstStructure *structure;
   int rate, channels;
   gboolean ret;
+  GstCaps *outcaps;
 
   mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
 
@@ -64,19 +65,21 @@ mulawdec_sink_setcaps (GstPad * pad, GstCaps * caps)
   if (!ret)
     return FALSE;
 
-  if (mulawdec->srccaps)
+  outcaps = gst_caps_new_simple ("audio/x-raw-int",
-    gst_caps_unref (mulawdec->srccaps);
-  mulawdec->srccaps = gst_caps_new_simple ("audio/x-raw-int",
       "width", G_TYPE_INT, 16,
       "depth", G_TYPE_INT, 16,
       "endianness", G_TYPE_INT, G_BYTE_ORDER,
       "signed", G_TYPE_BOOLEAN, TRUE,
       "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL);
+  ret = gst_pad_set_caps (mulawdec->srcpad, outcaps);
+  gst_caps_unref (outcaps);
 
-  mulawdec->rate = rate;
+  if (ret) {
-  mulawdec->channels = channels;
+    GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels);
-
+    mulawdec->rate = rate;
-  return TRUE;
+    mulawdec->channels = channels;
+  }
+  return ret;
 }
 
 GType
@@ -155,15 +158,19 @@ gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer)
 
   mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
 
-  if (G_UNLIKELY (mulawdec->srccaps == NULL)) {
+  if (G_UNLIKELY (mulawdec->rate == 0))
-    gst_buffer_unref (buffer);
+    goto not_negotiated;
-    return GST_FLOW_NOT_NEGOTIATED;
-  }
 
   mulaw_data = (guint8 *) GST_BUFFER_DATA (buffer);
   mulaw_size = GST_BUFFER_SIZE (buffer);
 
-  outbuf = gst_buffer_new_and_alloc (mulaw_size * 2);
+  ret =
+      gst_pad_alloc_buffer_and_set_caps (mulawdec->srcpad,
+      GST_BUFFER_OFFSET_NONE, mulaw_size * 2, GST_PAD_CAPS (mulawdec->srcpad),
+      &outbuf);
+  if (ret != GST_FLOW_OK)
+    goto alloc_failed;
+
   linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
 
   /* copy discont flag */
@@ -176,7 +183,7 @@ gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer)
         mulaw_size * 2, 2 * mulawdec->rate * mulawdec->channels);
   else
     GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
-  gst_buffer_set_caps (outbuf, mulawdec->srccaps);
+  gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawdec->srcpad));
 
   mulaw_decode (mulaw_data, linear_data, mulaw_size);
 
@@ -185,6 +192,20 @@ gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer)
   ret = gst_pad_push (mulawdec->srcpad, outbuf);
 
   return ret;
+
+  /* ERRORS */
+not_negotiated:
+  {
+    GST_ERROR_OBJECT (mulawdec, "no format negotiated");
+    gst_buffer_unref (buffer);
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
+alloc_failed:
+  {
+    GST_ERROR_OBJECT (mulawdec, "pad alloc failed");
+    gst_buffer_unref (buffer);
+    return ret;
+  }
 }
 
 static GstStateChangeReturn
@@ -204,10 +225,8 @@ gst_mulawdec_change_state (GstElement * element, GstStateChange transition)
 
   switch (transition) {
     case GST_STATE_CHANGE_PAUSED_TO_READY:
-      if (dec->srccaps) {
+      dec->rate = 0;
-        gst_caps_unref (dec->srccaps);
+      dec->channels = 0;
-        dec->srccaps = NULL;
-      }
       break;
     default:
       break;

gst/law/mulaw-decode.h

@@ -42,7 +42,6 @@ struct _GstMuLawDec {
   GstElement element;
 
   GstPad *sinkpad,*srcpad;
-  GstCaps *srccaps;
 
   gint rate;
   gint channels;

gst/law/mulaw-encode.c

@@ -230,7 +230,13 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
         GST_SECOND, mulawenc->rate * mulawenc->channels);
   }
 
-  outbuf = gst_buffer_new_and_alloc (mulaw_size);
+  ret =
+      gst_pad_alloc_buffer_and_set_caps (mulawenc->srcpad,
+      GST_BUFFER_OFFSET_NONE, mulaw_size, GST_PAD_CAPS (mulawenc->srcpad),
+      &outbuf);
+  if (ret != GST_FLOW_OK)
+    goto alloc_failed;
+
   mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
 
   /* copy discont flag */
@@ -255,7 +261,15 @@ done:
 
 not_negotiated:
   {
+    GST_DEBUG_OBJECT (mulawenc, "no format negotiated");
     ret = GST_FLOW_NOT_NEGOTIATED;
+    gst_buffer_unref (buffer);
+    goto done;
+  }
+alloc_failed:
+  {
+    GST_DEBUG_OBJECT (mulawenc, "pad alloc failed");
+    gst_buffer_unref (buffer);
     goto done;
   }
 }