--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ * 2005 Wim Taymans <wim@fluendo.com>
+ *
+ * gstsignalprocessor.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#include <stdlib.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gst/audio/audio.h>
+#include "gstsignalprocessor.h"
+
+
+GST_DEBUG_CATEGORY_STATIC (gst_signal_processor_debug);
+#define GST_CAT_DEFAULT gst_signal_processor_debug
+
+
+static GstStaticCaps template_caps =
+GST_STATIC_CAPS (GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS);
+
+#define GST_TYPE_SIGNAL_PROCESSOR_PAD_TEMPLATE \
+ (gst_signal_processor_pad_template_get_type ())
+#define GST_SIGNAL_PROCESSOR_PAD_TEMPLATE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SIGNAL_PROCESSOR_PAD_TEMPLATE,\
+ GstSignalProcessorPadTemplate))
+typedef struct _GstSignalProcessorPadTemplate GstSignalProcessorPadTemplate;
+typedef GstPadTemplateClass GstSignalProcessorPadTemplateClass;
+
+struct _GstSignalProcessorPadTemplate
+{
+ GstPadTemplate parent;
+
+ guint index;
+};
+
+static GType
+gst_signal_processor_pad_template_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type) {
+ static const GTypeInfo info = {
+ sizeof (GstSignalProcessorPadTemplateClass), NULL, NULL, NULL, NULL,
+ NULL, sizeof (GstSignalProcessorPadTemplate), 0, NULL
+ };
+
+ type = g_type_register_static (GST_TYPE_PAD_TEMPLATE,
+ "GstSignalProcessorPadTemplate", &info, 0);
+ }
+ return type;
+}
+
+void
+gst_signal_processor_class_add_pad_template (GstSignalProcessorClass * klass,
+ const gchar * name, GstPadDirection direction, guint index)
+{
+ GstPadTemplate *new;
+
+ g_return_if_fail (GST_IS_SIGNAL_PROCESSOR_CLASS (klass));
+ g_return_if_fail (name != NULL);
+ g_return_if_fail (direction == GST_PAD_SRC || direction == GST_PAD_SINK);
+
+ new = g_object_new (gst_signal_processor_pad_template_get_type (),
+ "name", name, NULL);
+
+ GST_PAD_TEMPLATE_NAME_TEMPLATE (new) = g_strdup (name);
+ GST_PAD_TEMPLATE_DIRECTION (new) = direction;
+ GST_PAD_TEMPLATE_PRESENCE (new) = GST_PAD_ALWAYS;
+ GST_PAD_TEMPLATE_CAPS (new) = gst_caps_copy (gst_static_caps_get
+ (&template_caps));
+ GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (new)->index = index;
+
+ gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass), new);
+ gst_object_unref (new);
+}
+
+
+#define GST_TYPE_SIGNAL_PROCESSOR_PAD (gst_signal_processor_pad_get_type ())
+#define GST_SIGNAL_PROCESSOR_PAD(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SIGNAL_PROCESSOR_PAD,\
+ GstSignalProcessorPad))
+typedef struct _GstSignalProcessorPad GstSignalProcessorPad;
+typedef GstPadClass GstSignalProcessorPadClass;
+
+struct _GstSignalProcessorPad
+{
+ GstPad parent;
+
+ GstBuffer *pen;
+
+ guint index;
+};
+
+static GType
+gst_signal_processor_pad_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type) {
+ static const GTypeInfo info = {
+ sizeof (GstSignalProcessorPadClass), NULL, NULL, NULL, NULL,
+ NULL, sizeof (GstSignalProcessorPad), 0, NULL
+ };
+
+ type = g_type_register_static (GST_TYPE_PAD,
+ "GstSignalProcessorPad", &info, 0);
+ }
+ return type;
+}
+
+
+GST_BOILERPLATE (GstSignalProcessor, gst_signal_processor, GstElement,
+ GST_TYPE_ELEMENT);
+
+
+static void gst_signal_processor_finalize (GObject * object);
+static void gst_signal_processor_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_signal_processor_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static gboolean gst_signal_processor_src_activate_pull (GstPad * pad,
+ gboolean active);
+static gboolean gst_signal_processor_sink_activate_push (GstPad * pad,
+ gboolean active);
+static GstElementStateReturn gst_signal_processor_change_state (GstElement *
+ element);
+
+static gboolean gst_signal_processor_event (GstPad * pad, GstEvent * event);
+static GstFlowReturn gst_signal_processor_getrange (GstPad * pad,
+ guint64 offset, guint length, GstBuffer ** buffer);
+static GstFlowReturn gst_signal_processor_chain (GstPad * pad,
+ GstBuffer * buffer);
+static gboolean gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps);
+
+
+static void
+gst_signal_processor_base_init (gpointer g_class)
+{
+ GST_DEBUG_CATEGORY_INIT (gst_signal_processor_debug, "gst-dsp", 0,
+ "signalprocessor element");
+}
+
+static void
+gst_signal_processor_class_init (GstSignalProcessorClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_signal_processor_finalize);
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_signal_processor_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_signal_processor_get_property);
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_signal_processor_change_state);
+}
+
+static void
+gst_signal_processor_add_pad_from_template (GstSignalProcessor * self,
+ GstPadTemplate * templ)
+{
+ GstPad *new;
+
+ new = g_object_new (GST_TYPE_PAD, "name", GST_OBJECT_NAME (templ),
+ "direction", templ->direction, "template", templ, NULL);
+ GST_SIGNAL_PROCESSOR_PAD (new)->index =
+ GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (templ)->index;
+
+ gst_pad_set_setcaps_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_setcaps));
+
+ if (templ->direction == GST_PAD_SINK) {
+ gst_pad_set_event_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_event));
+ gst_pad_set_chain_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_chain));
+ gst_pad_set_activatepush_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_sink_activate_push));
+ } else {
+ gst_pad_set_getrange_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_getrange));
+ gst_pad_set_activatepull_function (new,
+ GST_DEBUG_FUNCPTR (gst_signal_processor_src_activate_pull));
+ }
+
+ gst_element_add_pad (GST_ELEMENT (self), new);
+}
+
+static void
+gst_signal_processor_init (GstSignalProcessor * self)
+{
+ GList *templates;
+
+ GST_DEBUG ("gst_signal_processor_init");
+
+ templates =
+ gst_element_class_get_pad_template_list (GST_ELEMENT_GET_CLASS (self));
+
+ while (templates) {
+ GstPadTemplate *templ = GST_PAD_TEMPLATE (templates->data);
+
+ gst_signal_processor_add_pad_from_template (self, templ);
+ templates = templates->next;
+ }
+}
+
+static void
+gst_signal_processor_finalize (GObject * object)
+{
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstSignalProcessor *self;
+ GstSignalProcessorClass *klass;
+
+ self = GST_SIGNAL_PROCESSOR (GST_PAD_PARENT (pad));
+ klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ if (caps != self->caps) {
+ GstStructure *s;
+ gint sample_rate, buffer_frames;
+
+ s = gst_caps_get_structure (caps, 0);
+ if (!gst_structure_get_int (s, "rate", &sample_rate))
+ return FALSE;
+ if (!gst_structure_get_int (s, "buffer-frames", &buffer_frames))
+ return FALSE;
+
+ if (!klass->setup (self, sample_rate, buffer_frames))
+ return FALSE;
+
+ self->sample_rate = sample_rate;
+ self->buffer_frames = buffer_frames;
+ }
+
+ /* FIXME: handle was_active, etc */
+
+ return TRUE;
+}
+
+static gboolean
+gst_signal_processor_event (GstPad * pad, GstEvent * event)
+{
+ GstSignalProcessor *self;
+ GstSignalProcessorClass *bclass;
+ gboolean ret = FALSE;
+ gboolean unlock;
+
+ self = GST_SIGNAL_PROCESSOR (GST_PAD_PARENT (pad));
+ bclass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ if (bclass->event)
+ bclass->event (self, event);
+
+ unlock = FALSE;
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_STOP:
+ case GST_EVENT_EOS:
+ GST_STREAM_LOCK (pad);
+ unlock = TRUE;
+ break;
+ default:
+ break;
+ }
+ ret = gst_pad_event_default (pad, event);
+ if (unlock)
+ GST_STREAM_UNLOCK (pad);
+
+ return ret;
+}
+
+static void
+gst_signal_processor_process (GstSignalProcessor * self)
+{
+ GstElement *elem;
+ GList *l1, *l2;
+ GstSignalProcessorClass *klass;
+
+ g_return_if_fail (self->pending_in == 0);
+ g_return_if_fail (self->pending_out == 0);
+
+ /* arrange the output buffers */
+ for (l1 = elem->sinkpads, l2 = elem->srcpads; l1 || l2;
+ l1 = l1->next, l2 = l2->next) {
+ GstSignalProcessorPad *srcpad, *sinkpad;
+
+ if (!l2) {
+ /* the output buffers have been covered, yay */
+ break;
+ } 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 (GST_PAD (srcpad), -1, self->buffer_frames,
+ GST_PAD_CAPS (srcpad), &srcpad->pen);
+
+ if (ret != GST_FLOW_OK) {
+ self->state = ret;
+ return;
+ } else {
+ self->audio_out[srcpad->index] =
+ (gfloat *) GST_BUFFER_DATA (srcpad->pen);
+ self->pending_out++;
+ }
+ }
+ break;
+ } 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++;
+ }
+ }
+
+ klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ klass->process (self, self->buffer_frames);
+
+ /* 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;
+ }
+ }
+}
+
+static void
+gst_signal_processor_pen_buffer (GstSignalProcessor * self, GstPad * pad,
+ GstBuffer * buffer)
+{
+ GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pad;
+
+ if (spad->pen) {
+ g_critical ("Pad %s:%s already has penned buffer",
+ GST_DEBUG_PAD_NAME (pad));
+ gst_buffer_unref (buffer);
+ return;
+ }
+
+ /* keep the reference */
+ spad->pen = buffer;
+ self->audio_in[spad->index] = (gfloat *) GST_BUFFER_DATA (buffer);
+
+ g_assert (self->pending_in != 0);
+
+ self->pending_in--;
+
+ if (self->pending_in == 0) {
+ gst_signal_processor_process (self);
+ }
+}
+
+static void
+gst_signal_processor_flush (GstSignalProcessor * self)
+{
+ GList *pads;
+
+ pads = GST_ELEMENT (self)->pads;
+
+ for (pads = GST_ELEMENT (self)->pads; pads; pads = pads->next) {
+ GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pads->data;
+
+ if (spad->pen) {
+ gst_buffer_unref (spad->pen);
+ spad->pen = NULL;
+ }
+ }
+}
+
+static void
+gst_signal_processor_do_pulls (GstSignalProcessor * self)
+{
+ GList *sinkpads;
+
+ /* not threadsafe atm */
+
+ sinkpads = GST_ELEMENT (self)->sinkpads;
+
+ for (; sinkpads; sinkpads = sinkpads->next) {
+ GstSignalProcessorPad *spad = (GstSignalProcessorPad *) sinkpads->data;
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstBuffer *buf;
+
+ if (spad->pen) {
+ g_warning ("Unexpectedly full buffer pen for pad %s:%s",
+ GST_DEBUG_PAD_NAME (spad));
+ continue;
+ }
+
+ ret = gst_pad_pull_range (GST_PAD (spad), -1, self->buffer_frames, &buf);
+
+ if (ret != GST_FLOW_OK) {
+ self->state = ret;
+ gst_signal_processor_flush (self);
+ return;
+ } else if (!buf) {
+ g_critical ("Pull failed to make a buffer!");
+ self->state = GST_FLOW_ERROR;
+ return;
+ } else {
+ gst_signal_processor_pen_buffer (self, GST_PAD (spad), buf);
+ }
+ }
+
+ if (self->pending_in != 0) {
+ g_critical ("Something wierd happened...");
+ self->state = GST_FLOW_ERROR;
+ } else {
+ gst_signal_processor_process (self);
+ }
+}
+
+static GstFlowReturn
+gst_signal_processor_getrange (GstPad * pad, guint64 offset,
+ guint length, GstBuffer ** buffer)
+{
+ GstSignalProcessor *self;
+ GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pad;
+ GstFlowReturn ret;
+
+ self = GST_SIGNAL_PROCESSOR (GST_PAD_PARENT (pad));
+
+ GST_STREAM_LOCK (pad);
+
+ if (spad->pen) {
+ *buffer = spad->pen;
+ spad->pen = NULL;
+ g_assert (self->pending_out != 0);
+ self->pending_out--;
+ ret = GST_FLOW_OK;
+ } else {
+ gst_signal_processor_do_pulls (self);
+ if (!spad->pen) {
+ *buffer = NULL;
+ ret = self->state;
+ } else {
+ *buffer = spad->pen;
+ spad->pen = NULL;
+ self->pending_out--;
+ ret = GST_FLOW_OK;
+ }
+ }
+
+ GST_STREAM_UNLOCK (pad);
+
+ return ret;
+}
+
+static void
+gst_signal_processor_do_pushes (GstSignalProcessor * self)
+{
+ GList *srcpads;
+
+ /* not threadsafe atm */
+
+ srcpads = GST_ELEMENT (self)->srcpads;
+
+ for (; srcpads; srcpads = srcpads->next) {
+ GstSignalProcessorPad *spad = (GstSignalProcessorPad *) srcpads->data;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ if (!spad->pen) {
+ g_warning ("Unexpectedly empty buffer pen for pad %s:%s",
+ GST_DEBUG_PAD_NAME (spad));
+ continue;
+ }
+
+ ret = gst_pad_push (GST_PAD (spad), spad->pen);
+
+ if (ret != GST_FLOW_OK) {
+ self->state = ret;
+ gst_signal_processor_flush (self);
+ return;
+ } else {
+ spad->pen = NULL;
+ g_assert (self->pending_out > 0);
+ self->pending_out--;
+ }
+ }
+
+ if (self->pending_out != 0) {
+ g_critical ("Something wierd happened...");
+ self->state = GST_FLOW_ERROR;
+ }
+}
+
+static GstFlowReturn
+gst_signal_processor_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstSignalProcessor *self;
+
+ self = GST_SIGNAL_PROCESSOR (GST_PAD_PARENT (pad));
+
+ GST_STREAM_LOCK (pad);
+
+ gst_signal_processor_pen_buffer (self, pad, buffer);
+
+ if (self->pending_in == 0) {
+ gst_signal_processor_process (self);
+
+ gst_signal_processor_do_pushes (self);
+ }
+
+ GST_STREAM_UNLOCK (pad);
+
+ return self->state;
+}
+
+static void
+gst_signal_processor_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ /* GstSignalProcessor *self = GST_SIGNAL_PROCESSOR (object); */
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_signal_processor_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ /* GstSignalProcessor *self = GST_SIGNAL_PROCESSOR (object); */
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+gst_signal_processor_sink_activate_push (GstPad * pad, gboolean active)
+{
+ gboolean result = TRUE;
+ GstSignalProcessor *self;
+ GstSignalProcessorClass *bclass;
+
+ self = GST_SIGNAL_PROCESSOR (GST_OBJECT_PARENT (pad));
+ bclass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ if (active) {
+ if (self->mode == GST_ACTIVATE_NONE) {
+ self->mode = GST_ACTIVATE_PUSH;
+ result = TRUE;
+ } else if (self->mode == GST_ACTIVATE_PUSH) {
+ result = TRUE;
+ } else {
+ g_warning ("foo");
+ result = FALSE;
+ }
+ } else {
+ if (self->mode == GST_ACTIVATE_NONE) {
+ result = TRUE;
+ } else if (self->mode == GST_ACTIVATE_PUSH) {
+ self->mode = GST_ACTIVATE_NONE;
+ result = TRUE;
+ } else {
+ g_warning ("foo");
+ result = FALSE;
+ }
+ }
+
+ return result;
+}
+
+static gboolean
+gst_signal_processor_src_activate_pull (GstPad * pad, gboolean active)
+{
+ gboolean result = TRUE;
+ GstSignalProcessor *self;
+ GstSignalProcessorClass *bclass;
+
+ self = GST_SIGNAL_PROCESSOR (GST_OBJECT_PARENT (pad));
+ bclass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ if (active) {
+ if (self->mode == GST_ACTIVATE_NONE) {
+ GList *l;
+
+ for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
+ result &= gst_pad_activate_pull (pad, active);
+ if (result)
+ self->mode = GST_ACTIVATE_PULL;
+ } else if (self->mode == GST_ACTIVATE_PULL) {
+ result = TRUE;
+ } else {
+ g_warning ("foo");
+ result = FALSE;
+ }
+ } else {
+ if (self->mode == GST_ACTIVATE_NONE) {
+ result = TRUE;
+ } else if (self->mode == GST_ACTIVATE_PULL) {
+ GList *l;
+
+ for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
+ result &= gst_pad_activate_pull (pad, active);
+ if (result)
+ self->mode = GST_ACTIVATE_NONE;
+ result = TRUE;
+ } else {
+ g_warning ("foo");
+ result = FALSE;
+ }
+ }
+
+ return result;
+}
+
+static GstElementStateReturn
+gst_signal_processor_change_state (GstElement * element)
+{
+ GstSignalProcessor *self;
+ GstSignalProcessorClass *klass;
+ GstElementState transition;
+ GstElementStateReturn result;
+
+ self = GST_SIGNAL_PROCESSOR (element);
+ klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
+
+ transition = GST_STATE_TRANSITION (element);
+
+ switch (transition) {
+ case GST_STATE_NULL_TO_READY:
+ self->audio_in = g_new0 (gfloat *, klass->num_audio_in);
+ self->control_in = g_new0 (gfloat, klass->num_control_in);
+ self->audio_out = g_new0 (gfloat *, klass->num_audio_out);
+ self->control_out = g_new0 (gfloat, klass->num_control_out);
+ break;
+ case GST_STATE_READY_TO_PAUSED:
+ break;
+ case GST_STATE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ result = GST_ELEMENT_CLASS (parent_class)->change_state (element);
+
+ switch (transition) {
+ case GST_STATE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_PAUSED_TO_READY:
+ break;
+ case GST_STATE_READY_TO_NULL:
+ g_free (self->audio_in);
+ self->audio_in = NULL;
+ g_free (self->control_in);
+ self->control_in = NULL;
+ g_free (self->audio_out);
+ self->audio_out = NULL;
+ g_free (self->control_out);
+ self->control_out = NULL;
+ break;
+ default:
+ break;
+ }
+
+ return result;
+}
projects / platform / upstream / gst-plugins-bad.git / commitdiff