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-rw-r--r--ext/ladspa/gstsignalprocessor.c201
1 files changed, 127 insertions, 74 deletions
diff --git a/ext/ladspa/gstsignalprocessor.c b/ext/ladspa/gstsignalprocessor.c
index 884bb1e5..880a94c0 100644
--- a/ext/ladspa/gstsignalprocessor.c
+++ b/ext/ladspa/gstsignalprocessor.c
@@ -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 void
-gst_signal_processor_process (GstSignalProcessor * self)
+static guint
+gst_signal_processor_prepare (GstSignalProcessor * self)
{
- GstElement *elem;
- GList *l1, *l2;
- GstSignalProcessorClass *klass;
- guint nframes = G_MAXUINT;
+ 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;
+ }
- g_return_if_fail (self->pending_in == 0);
- g_return_if_fail (self->pending_out == 0);
+ 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;
+ }
- elem = GST_ELEMENT (self);
+ /* 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;
- /* 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;
+ sinkpad = (GstSignalProcessorPad *) sinks->data;
+ srcpad = (GstSignalProcessorPad *) srcs->data;
- if (l1) {
- GstSignalProcessorPad *tmp = (GstSignalProcessorPad *) l1->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++;
- nframes = MIN (nframes, GST_BUFFER_SIZE (tmp->pen) / sizeof (gfloat));
+ srcs = srcs->next;
}
- 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;
+ sinks = sinks->next;
+ }
- srcpad->pen = sinkpad->pen;
- sinkpad->pen = NULL;
+ /* 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++;
}
- }
- /* will fail in the ladspa src case, need to check that :-/ */
- g_assert (nframes < G_MAXUINT);
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+ srcs = srcs->next;
+ }
- GST_INFO_OBJECT (self, "process(%u)", nframes);
+ return samples_avail;
+}
- klass->process (self, nframes);
+static void
+gst_signal_processor_update_inputs (GstSignalProcessor * self, guint nprocessed)
+{
+ GstElement *elem = (GstElement *) self;
+ GList *sinks;
- /* reset */
- self->pending_in = klass->num_audio_in;
+ for (sinks = elem->sinkpads; sinks; sinks = sinks->next) {
+ GstSignalProcessorPad *sinkpad;
- /* free unneeded input buffers */
- for (l1 = elem->sinkpads; l1; l1 = l1->next) {
- GstSignalProcessorPad *sinkpad = (GstSignalProcessorPad *) l1->data;
+ sinkpad = (GstSignalProcessorPad *) sinks->data;
+ g_assert (sinkpad->samples_avail >= nprocessed);
- if (sinkpad->pen) {
+ 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;
+ GstSignalProcessorClass *klass;
+ guint nframes;
+
+ g_return_if_fail (self->pending_in == 0);
+ g_return_if_fail (self->pending_out == 0);
+
+ elem = GST_ELEMENT (self);
+
+ nframes = gst_signal_processor_prepare (self);
+ if (G_UNLIKELY (nframes == 0))
+ goto flow_error;
+
+ klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ GST_LOG_OBJECT (self, "process(%u)", nframes);
+
+ klass->process (self, nframes);
+
+ gst_signal_processor_update_inputs (self, nframes);
+
+ 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;
}
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-28 15:48:34 +0000