Merged revisions 224931 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r224931 | russell | 2009-10-20 21:59:54 -0500 (Tue, 20 Oct 2009) | 5 lines
  
  Isolate frames returned from a DSP instance or codec translator.
  
  The reasoning for these changes are the same as what I wrote in the commit
  message for rev 222878.
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@224932 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 3 insertions, 30 deletions

diff --git a/main/dsp.c b/main/dsp.c
index 83a6dd79b..585403786 100644
--- a/main/dsp.c
+++ b/main/dsp.c
@@ -391,7 +391,6 @@ struct ast_dsp {
 	digit_detect_state_t digit_state;
 	tone_detect_state_t cng_tone_state;
 	tone_detect_state_t ced_tone_state;
-	int destroy;
 };
 
 static void mute_fragment(struct ast_dsp *dsp, fragment_t *fragment)
@@ -1350,8 +1349,7 @@ struct ast_frame *ast_dsp_process(struct ast_channel *chan, struct ast_dsp *dsp,
 		memset(&dsp->f, 0, sizeof(dsp->f));
 		dsp->f.frametype = AST_FRAME_NULL;
 		ast_frfree(af);
-		ast_set_flag(&dsp->f, AST_FRFLAG_FROM_DSP);
-		return &dsp->f;
+		return ast_frisolate(&dsp->f);
 	}
 	if ((dsp->features & DSP_FEATURE_BUSY_DETECT) && ast_dsp_busydetect(dsp)) {
 		chan->_softhangup |= AST_SOFTHANGUP_DEV;
@@ -1360,8 +1358,7 @@ struct ast_frame *ast_dsp_process(struct ast_channel *chan, struct ast_dsp *dsp,
 		dsp->f.subclass = AST_CONTROL_BUSY;
 		ast_frfree(af);
 		ast_debug(1, "Requesting Hangup because the busy tone was detected on channel %s\n", chan->name);
-		ast_set_flag(&dsp->f, AST_FRFLAG_FROM_DSP);
-		return &dsp->f;
+		return ast_frisolate(&dsp->f);
 	}
 
 	if ((dsp->features & DSP_FEATURE_FAX_DETECT)) {
@@ -1471,8 +1468,7 @@ done:
 			ast_queue_frame(chan, af);
 		}
 		ast_frfree(af);
-		ast_set_flag(outf, AST_FRFLAG_FROM_DSP);
-		return outf;
+		return ast_frisolate(outf);
 	} else {
 		return af;
 	}
@@ -1522,16 +1518,6 @@ void ast_dsp_set_features(struct ast_dsp *dsp, int features)
 
 void ast_dsp_free(struct ast_dsp *dsp)
 {
-	if (ast_test_flag(&dsp->f, AST_FRFLAG_FROM_DSP)) {
-		/* If this flag is still set, that means that the dsp's destruction 
-		 * been torn down, while we still have a frame out there being used.
-		 * When ast_frfree() gets called on that frame, this ast_trans_pvt
-		 * will get destroyed, too. */
-
-		dsp->destroy = 1;
-
-		return;
-	}
 	ast_free(dsp);
 }
 
@@ -1697,16 +1683,3 @@ int ast_dsp_reload(void)
 	return _dsp_init(1);
 }
 
-void ast_dsp_frame_freed(struct ast_frame *fr)
-{
-	struct ast_dsp *dsp;
-
-	ast_clear_flag(fr, AST_FRFLAG_FROM_DSP);
-
-	dsp = (struct ast_dsp *) (((char *) fr) - offsetof(struct ast_dsp, f));
-
-	if (!dsp->destroy)
-		return;
-	
-	ast_dsp_free(dsp);
-}