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gst/goom/gstgoom.*: Document, fix and improve goom adapter behaviour.

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Original commit message from CVS:
* gst/goom/gstgoom.c: (gst_goom_src_setcaps), (get_buffer),
(gst_goom_chain):
* gst/goom/gstgoom.h:
Document, fix and improve goom adapter behaviour.
Fixes #407006.
This commit is contained in:
Wim Taymans 2007-03-06 13:21:23 +00:00
parent e1fcfeab25
commit 0dcf0cebb9
3 changed files with 33 additions and 15 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2007-03-06 Wim Taymans <wim@fluendo.com>
* gst/goom/gstgoom.c: (gst_goom_src_setcaps), (get_buffer),
(gst_goom_chain):
* gst/goom/gstgoom.h:
Document, fix and improve goom adapter behaviour.
Fixes #407006.
2007-03-05 Jan Schmidt <thaytan@mad.scientist.com>
* ext/esd/esdsink.c: (gst_esdsink_open):

38
gst/goom/gstgoom.c
View file

@ -257,6 +257,7 @@ gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
goom->duration =
gst_util_uint64_scale_int (GST_SECOND, goom->fps_d, goom->fps_n);
goom->spf = gst_util_uint64_scale_int (goom->rate, goom->fps_d, goom->fps_n);
goom->bpf = goom->spf * goom->bps;
GST_DEBUG_OBJECT (goom, "dimension %dx%d, framerate %d/%d, spf %d",
goom->width, goom->height, goom->fps_n, goom->fps_d, goom->spf);
@ -409,13 +410,9 @@ get_buffer (GstGoom * goom, GstBuffer ** outbuf)
gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
GST_BUFFER_OFFSET_NONE, goom->outsize,
GST_PAD_CAPS (goom->srcpad), outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (*outbuf == NULL)
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
@ -425,7 +422,6 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
GstGoom *goom;
GstFlowReturn ret;
GstBuffer *outbuf = NULL;
guint avail;
goom = GST_GOOM (gst_pad_get_parent (pad));
@ -453,18 +449,28 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
/* Collect samples until we have enough for an output frame */
gst_adapter_push (goom->adapter, buffer);
ret = GST_FLOW_OK;
/* Collect samples until we have enough for an output frame */
avail = gst_adapter_available (goom->adapter);
GST_DEBUG_OBJECT (goom, "avail now %u", avail);
while (avail > MAX (GOOM_SAMPLES, goom->spf) * goom->bps) {
while (TRUE) {
const guint16 *data;
gboolean need_skip;
guchar *out_frame;
gint i;
guint avail, to_flush;
avail = gst_adapter_available (goom->adapter);
GST_DEBUG_OBJECT (goom, "avail now %u", avail);
/* we need GOOM_SAMPLES to get a meaningful result from goom. */
if (avail < (GOOM_SAMPLES * goom->bps))
break;
/* we also need enough samples to produce one frame at least */
if (avail < goom->bpf)
break;
GST_DEBUG_OBJECT (goom, "processing buffer");
@ -487,6 +493,7 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
}
}
/* get next GOOM_SAMPLES, we have at least this amount of samples */
data =
(const guint16 *) gst_adapter_peek (goom->adapter,
GOOM_SAMPLES * goom->bps);
@ -531,15 +538,16 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
if (goom->next_ts != -1)
goom->next_ts += goom->duration;
GST_DEBUG_OBJECT (goom, "finished frame, flushing %u samples from input",
goom->spf);
gst_adapter_flush (goom->adapter, MIN (avail, goom->spf * goom->bps));
/* Now flush the samples we needed for this frame, which might be more than
* the samples we used (GOOM_SAMPLES). */
to_flush = goom->bpf;
GST_DEBUG_OBJECT (goom, "finished frame, flushing %u bytes from input",
to_flush);
gst_adapter_flush (goom->adapter, to_flush);
if (ret != GST_FLOW_OK)
break;
avail = gst_adapter_available (goom->adapter);
GST_DEBUG_OBJECT (goom, "avail now %u", avail);
}
if (outbuf != NULL)

2
gst/goom/gstgoom.h
View file

@ -60,6 +60,8 @@ struct _GstGoom
/* samples per frame */
guint spf;
/* bytes per frame */
guint bpf;
/* goom stuff */
gint16 datain[2][GOOM_SAMPLES];