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ext/ladspa/gstsignalprocessor.c (gst_signal_processor_setcaps) (gst_signal_processor_prepare) (gst_signal_processor_u...

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Original commit message from CVS:
2006-08-04  Andy Wingo  <wingo@pobox.com>

* ext/ladspa/gstsignalprocessor.c (gst_signal_processor_setcaps)
(gst_signal_processor_prepare)
(gst_signal_processor_update_inputs)
(gst_signal_processor_process, gst_signal_processor_pen_buffer)
(gst_signal_processor_flush)
(gst_signal_processor_sink_activate_push)
(gst_signal_processor_src_activate_pull)
(gst_signal_processor_change_state): Remove the last of the code
that assumes that we process whole buffers at a time. Fix some
debugging. Seems to work now in some cases.
This commit is contained in:
Andy Wingo 2006-08-04 09:05:53 +00:00
parent 9457674bc0
commit 6ea23316fd
2 changed files with 144 additions and 78 deletions
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13
ChangeLog
View file

@ -1,3 +1,16 @@
2006-08-04 Andy Wingo <wingo@pobox.com>
* ext/ladspa/gstsignalprocessor.c (gst_signal_processor_setcaps)
(gst_signal_processor_prepare)
(gst_signal_processor_update_inputs)
(gst_signal_processor_process, gst_signal_processor_pen_buffer)
(gst_signal_processor_flush)
(gst_signal_processor_sink_activate_push)
(gst_signal_processor_src_activate_pull)
(gst_signal_processor_change_state): Remove the last of the code
that assumes that we process whole buffers at a time. Fix some
debugging. Seems to work now in some cases.
2006-08-01 Andy Wingo <wingo@pobox.com>
* ext/ladspa/gstsignalprocessor.c (gst_signal_processor_process):

209
ext/ladspa/gstsignalprocessor.c
View file

@ -110,6 +110,10 @@ struct _GstSignalProcessorPad
GstBuffer *pen;
guint index;
/* these are only used for sink pads */
guint samples_avail;
gfloat *data;
};
static GType
@ -281,15 +285,17 @@ gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
GST_WARNING ("got no sample-rate");
goto impossible;
} else {
GST_DEBUG ("Got rate=%d", sample_rate);
GST_DEBUG_OBJECT (self, "Got rate=%d", sample_rate);
}
if (!klass->setup (self, sample_rate))
if (!klass->setup (self, sample_rate)) {
goto setup_failed;
else
} else {
self->sample_rate = sample_rate;
gst_caps_replace (&self->caps, caps);
}
} else {
GST_DEBUG ("skipping, have caps already");
GST_DEBUG_OBJECT (self, "skipping, have caps already");
}
/* FIXME: handle was_active, etc */
@ -334,90 +340,138 @@ gst_signal_processor_event (GstPad * pad, GstEvent * event)
return ret;
}
static guint
gst_signal_processor_prepare (GstSignalProcessor * self)
{
GstElement *elem = (GstElement *) self;
GList *sinks, *srcs;
guint samples_avail = G_MAXUINT;
/* first, assign audio_in pointers, and determine the number of samples that
* we can process */
for (sinks = elem->sinkpads; sinks; sinks = sinks->next) {
GstSignalProcessorPad *sinkpad;
sinkpad = (GstSignalProcessorPad *) sinks->data;
g_assert (sinkpad->samples_avail > 0);
samples_avail = MIN (samples_avail, sinkpad->samples_avail);
self->audio_in[sinkpad->index] = sinkpad->data;
}
if (samples_avail == G_MAXUINT) {
/* we don't have any sink pads, just choose a size -- should fix this
* function to have a suggested number of samples in the case of
* gst_pad_pull_range */
samples_avail = 256;
}
/* now assign output buffers. we can avoid allocation by reusing input
buffers, but only if process() can work in place, and if the input buffer
is the exact size of the number of samples we are processing. */
sinks = elem->sinkpads;
srcs = elem->srcpads;
while (sinks && srcs) {
GstSignalProcessorPad *sinkpad, *srcpad;
sinkpad = (GstSignalProcessorPad *) sinks->data;
srcpad = (GstSignalProcessorPad *) srcs->data;
if (GST_BUFFER_SIZE (sinkpad->pen) == samples_avail * sizeof (gfloat)) {
/* reusable, yay */
g_assert (sinkpad->samples_avail == samples_avail);
srcpad->pen = sinkpad->pen;
sinkpad->pen = NULL;
self->audio_out[srcpad->index] = sinkpad->data;
self->pending_out++;
srcs = srcs->next;
}
sinks = sinks->next;
}
/* now allocate for any remaining outputs */
while (srcs) {
GstSignalProcessorPad *srcpad;
GstFlowReturn ret;
srcpad = (GstSignalProcessorPad *) srcs->data;
ret =
gst_pad_alloc_buffer_and_set_caps (GST_PAD (srcpad), -1,
samples_avail, GST_PAD_CAPS (srcpad), &srcpad->pen);
if (ret != GST_FLOW_OK) {
self->state = ret;
return 0;
} else {
self->audio_out[srcpad->index] = (gfloat *) GST_BUFFER_DATA (srcpad->pen);
self->pending_out++;
}
srcs = srcs->next;
}
return samples_avail;
}
static void
gst_signal_processor_update_inputs (GstSignalProcessor * self, guint nprocessed)
{
GstElement *elem = (GstElement *) self;
GList *sinks;
for (sinks = elem->sinkpads; sinks; sinks = sinks->next) {
GstSignalProcessorPad *sinkpad;
sinkpad = (GstSignalProcessorPad *) sinks->data;
g_assert (sinkpad->samples_avail >= nprocessed);
if (sinkpad->pen && sinkpad->samples_avail == nprocessed) {
/* used up this buffer, unpen */
gst_buffer_unref (sinkpad->pen);
sinkpad->pen = NULL;
}
if (!sinkpad->pen) {
/* this buffer was used up */
self->pending_in++;
sinkpad->data = NULL;
sinkpad->samples_avail = 0;
} else {
/* advance ->data pointers and decrement ->samples_avail, unreffing buffer
if no samples are left */
sinkpad->samples_avail -= nprocessed;
sinkpad->data += nprocessed; /* gfloat* arithmetic */
}
}
}
static void
gst_signal_processor_process (GstSignalProcessor * self)
{
GstElement *elem;
GList *l1, *l2;
GstSignalProcessorClass *klass;
guint nframes = G_MAXUINT;
guint nframes;
g_return_if_fail (self->pending_in == 0);
g_return_if_fail (self->pending_out == 0);
elem = GST_ELEMENT (self);
/* arrange the output buffers */
for (l1 = elem->sinkpads, l2 = elem->srcpads; l1 || l2;
l1 = l1 ? l1->next : NULL, l2 = l2 ? l2->next : NULL) {
GstSignalProcessorPad *srcpad, *sinkpad;
if (l1) {
GstSignalProcessorPad *tmp = (GstSignalProcessorPad *) l1->data;
nframes = MIN (nframes, GST_BUFFER_SIZE (tmp->pen) / sizeof (gfloat));
}
if (!l2) {
/* the output buffers have been covered, yay -- just keep looping to check
available frames */
} else if (!l1) {
/* need to alloc some output buffers */
for (; l2; l2 = l2->next) {
GstFlowReturn ret;
srcpad = (GstSignalProcessorPad *) l2->data;
ret =
gst_pad_alloc_buffer_and_set_caps (GST_PAD (srcpad), -1,
nframes, GST_PAD_CAPS (srcpad), &srcpad->pen);
if (ret != GST_FLOW_OK) {
self->state = ret;
goto flow_error;
} else {
self->audio_out[srcpad->index] =
(gfloat *) GST_BUFFER_DATA (srcpad->pen);
self->pending_out++;
}
}
/* the for condition should cut out because of this, but I assert to be
clear */
g_assert (l2 == NULL);
} else {
/* copy input to output */
sinkpad = (GstSignalProcessorPad *) l1->data;
srcpad = (GstSignalProcessorPad *) l2->data;
srcpad->pen = sinkpad->pen;
sinkpad->pen = NULL;
self->audio_out[srcpad->index] = (gfloat *) GST_BUFFER_DATA (srcpad->pen);
self->pending_out++;
}
}
/* will fail in the ladspa src case, need to check that :-/ */
g_assert (nframes < G_MAXUINT);
nframes = gst_signal_processor_prepare (self);
if (G_UNLIKELY (nframes == 0))
goto flow_error;
klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
GST_INFO_OBJECT (self, "process(%u)", nframes);
GST_LOG_OBJECT (self, "process(%u)", nframes);
klass->process (self, nframes);
/* reset */
self->pending_in = klass->num_audio_in;
gst_signal_processor_update_inputs (self, nframes);
/* free unneeded input buffers */
for (l1 = elem->sinkpads; l1; l1 = l1->next) {
GstSignalProcessorPad *sinkpad = (GstSignalProcessorPad *) l1->data;
if (sinkpad->pen) {
gst_buffer_unref (sinkpad->pen);
sinkpad->pen = NULL;
}
}
return;
flow_error:
{
@ -442,15 +496,12 @@ gst_signal_processor_pen_buffer (GstSignalProcessor * self, GstPad * pad,
/* keep the reference */
spad->pen = buffer;
self->audio_in[spad->index] = (gfloat *) GST_BUFFER_DATA (buffer);
spad->data = (gfloat *) GST_BUFFER_DATA (buffer);
spad->samples_avail = GST_BUFFER_SIZE (buffer) / sizeof (float);
g_assert (self->pending_in != 0);
self->pending_in--;
if (self->pending_in == 0) {
gst_signal_processor_process (self);
}
}
static void
@ -466,6 +517,8 @@ gst_signal_processor_flush (GstSignalProcessor * self)
if (spad->pen) {
gst_buffer_unref (spad->pen);
spad->pen = NULL;
spad->data = NULL;
spad->samples_avail = 0;
}
}
}
@ -666,7 +719,7 @@ gst_signal_processor_sink_activate_push (GstPad * pad, gboolean active)
}
}
GST_DEBUG ("result : %d", TRUE);
GST_DEBUG_OBJECT (self, "result : %d", result);
gst_object_unref (self);
@ -714,7 +767,7 @@ gst_signal_processor_src_activate_pull (GstPad * pad, gboolean active)
}
}
GST_DEBUG ("result : %d", TRUE);
GST_DEBUG_OBJECT ("result : %d", result);
gst_object_unref (self);
@ -766,7 +819,7 @@ gst_signal_processor_change_state (GstElement * element,
/* ERRORS */
failure:
{
GST_DEBUG ("parent failed state change");
GST_DEBUG_OBJECT (element, "parent failed state change");
return result;
}
}