+++ /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., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-/*
- * SECTION:gstsignalprocessor
- *
- * This baseclass allows to write elements that need data on all pads before
- * their processing function can run.
- *
- * In push mode (gst_signal_processor_chain) it operates as follows:
- * 1. store each received buffer on the pad and decrement pending_in
- * 2. when pending_in==0, process as much as we can and push outputs
- *
- * In pull mode (gst_signal_processor_getrange) it operates as follows:
- * 1. if there is an output ready, deliver
- * 2. otherwise pull from each sink-pad, process requested frames and deliver
- * the buffer
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <gst/audio/audio.h>
-#include "gstsignalprocessor.h"
-
-
-GST_DEBUG_CATEGORY_STATIC (gst_signal_processor_debug);
-#define GST_CAT_DEFAULT gst_signal_processor_debug
-
-#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;
- guint channels;
-};
-
-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;
-}
-
-/*
- * gst_signal_processor_class_add_pad_template:
- * @klass: element class
- * @name: pad name
- * @direction: pad direction (src/sink)
- * @index: index for the pad per direction (starting from 0)
- * @channels: number of channels in this pad
- * @positions: array of channel positions in order
- *
- */
-void
-gst_signal_processor_class_add_pad_template (GstSignalProcessorClass * klass,
- const gchar * name, GstPadDirection direction, guint index, guint channels)
-{
- GstPadTemplate *new;
- GstCaps *caps;
-
- 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);
-
- caps = gst_caps_new_simple ("audio/x-raw-float",
- "endianness", G_TYPE_INT, G_BYTE_ORDER,
- "width", G_TYPE_INT, 32, "channels", G_TYPE_INT, channels,
- "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
-
- new = g_object_new (GST_TYPE_SIGNAL_PROCESSOR_PAD_TEMPLATE,
- "name", name, "name-template", name,
- "direction", direction, "presence", GST_PAD_ALWAYS, "caps", caps, NULL);
-
- gst_caps_unref (caps);
-
- GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (new)->index = index;
- GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (new)->channels = channels;
-
- gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass), 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;
- GstMapInfo map; /* mapped data to read from / write to */
-
- /* index for the pad per direction (starting from 0) */
- guint index;
-
- /* number of channels for the pad */
- guint channels;
-
- /* these are only used for sink pads */
- guint samples_avail; /* available mono sample frames */
-};
-
-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;
-}
-
-static GstElementClass *parent_class = NULL;
-
-static void gst_signal_processor_class_init (GstSignalProcessorClass * klass);
-static void gst_signal_processor_init (GstSignalProcessor * self,
- GstSignalProcessorClass * klass);
-
-GType
-gst_signal_processor_get_type (void)
-{
- static volatile gsize signal_processor_type = 0;
-
- if (g_once_init_enter (&signal_processor_type)) {
- GType _type;
- static const GTypeInfo signal_processor_info = {
- sizeof (GstSignalProcessorClass),
- NULL,
- NULL,
- (GClassInitFunc) gst_signal_processor_class_init,
- NULL,
- NULL,
- sizeof (GstSignalProcessor),
- 0,
- (GInstanceInitFunc) gst_signal_processor_init,
- };
-
- _type = g_type_register_static (GST_TYPE_ELEMENT,
- "GstSignalProcessor", &signal_processor_info, G_TYPE_FLAG_ABSTRACT);
- g_once_init_leave (&signal_processor_type, _type);
- }
- return signal_processor_type;
-}
-
-static void gst_signal_processor_finalize (GObject * object);
-static gboolean gst_signal_processor_src_activate_mode (GstPad * pad,
- GstObject * parent, GstPadMode mode, gboolean active);
-static gboolean gst_signal_processor_sink_activate_mode (GstPad * pad,
- GstObject * parent, GstPadMode mode, gboolean active);
-static GstStateChangeReturn gst_signal_processor_change_state (GstElement *
- element, GstStateChange transition);
-
-static gboolean gst_signal_processor_event (GstPad * pad, GstObject * parent,
- GstEvent * event);
-static GstFlowReturn gst_signal_processor_getrange (GstPad * pad,
- GstObject * parent, guint64 offset, guint length, GstBuffer ** buffer);
-static GstFlowReturn gst_signal_processor_chain (GstPad * pad,
- GstObject * parent, GstBuffer * buffer);
-static gboolean gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps);
-
-
-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);
-
- parent_class = g_type_class_peek_parent (klass);
-
- gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_signal_processor_finalize);
-
- gstelement_class->change_state =
- GST_DEBUG_FUNCPTR (gst_signal_processor_change_state);
-
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_setcaps);
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_event);
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_chain);
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_sink_activate_mode);
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_getrange);
- GST_DEBUG_REGISTER_FUNCPTR (gst_signal_processor_src_activate_mode);
-
- GST_DEBUG_CATEGORY_INIT (gst_signal_processor_debug, "signalprocessor", 0,
- "signalprocessor baseclass");
-}
-
-static void
-gst_signal_processor_add_pad_from_template (GstSignalProcessor * self,
- GstPadTemplate * templ)
-{
- GstPad *pad;
-
- pad = g_object_new (GST_TYPE_SIGNAL_PROCESSOR_PAD,
- "name", GST_OBJECT_NAME (templ), "direction", templ->direction,
- "template", templ, NULL);
- GST_SIGNAL_PROCESSOR_PAD (pad)->index =
- GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (templ)->index;
- GST_SIGNAL_PROCESSOR_PAD (pad)->channels =
- GST_SIGNAL_PROCESSOR_PAD_TEMPLATE (templ)->channels;
-
- if (templ->direction == GST_PAD_SINK) {
- GST_DEBUG_OBJECT (pad, "added new sink pad");
-
- gst_pad_set_event_function (pad, gst_signal_processor_event);
- gst_pad_set_chain_function (pad, gst_signal_processor_chain);
- gst_pad_set_activatemode_function (pad,
- gst_signal_processor_sink_activate_mode);
- } else {
- GST_DEBUG_OBJECT (pad, "added new src pad");
-
- gst_pad_set_getrange_function (pad, gst_signal_processor_getrange);
- gst_pad_set_activatemode_function (pad,
- gst_signal_processor_src_activate_mode);
- }
-
- gst_element_add_pad (GST_ELEMENT (self), pad);
-}
-
-static void
-gst_signal_processor_init (GstSignalProcessor * self,
- GstSignalProcessorClass * klass)
-{
- GList *templates;
-
- templates =
- gst_element_class_get_pad_template_list (GST_ELEMENT_CLASS (klass));
-
- while (templates) {
- GstPadTemplate *templ = GST_PAD_TEMPLATE (templates->data);
- gst_signal_processor_add_pad_from_template (self, templ);
- templates = templates->next;
- }
-
- self->state = GST_SIGNAL_PROCESSOR_STATE_NULL;
-
- self->group_in = g_new0 (GstSignalProcessorGroup, klass->num_group_in);
- self->group_out = g_new0 (GstSignalProcessorGroup, klass->num_group_out);
- self->audio_in = g_new0 (GstMapInfo, klass->num_audio_in);
- self->audio_out = g_new0 (GstMapInfo, klass->num_audio_out);
-
- /* init */
- self->pending_in = klass->num_group_in + klass->num_audio_in;
- self->pending_out = 0;
-}
-
-static void
-gst_signal_processor_finalize (GObject * object)
-{
- GstSignalProcessor *self = GST_SIGNAL_PROCESSOR (object);
-
- g_free (self->group_in);
- self->group_in = NULL;
- g_free (self->group_out);
- self->group_out = NULL;
- g_free (self->audio_in);
- self->audio_in = NULL;
- g_free (self->audio_out);
- self->audio_out = NULL;
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static gboolean
-gst_signal_processor_setup (GstSignalProcessor * self, GstCaps * caps)
-{
- GstSignalProcessorClass *klass;
- gboolean ret = TRUE;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- GST_INFO_OBJECT (self, "setup()");
-
- g_return_val_if_fail (self->state == GST_SIGNAL_PROCESSOR_STATE_NULL, FALSE);
-
- if (klass->setup)
- ret = klass->setup (self, caps);
-
- if (!ret)
- goto setup_failed;
-
- self->state = GST_SIGNAL_PROCESSOR_STATE_INITIALIZED;
-
- return ret;
-
-setup_failed:
- {
- GST_INFO_OBJECT (self, "setup() failed for caps: %" GST_PTR_FORMAT, caps);
- return ret;
- }
-}
-
-static gboolean
-gst_signal_processor_start (GstSignalProcessor * self)
-{
- GstSignalProcessorClass *klass;
- gboolean ret = TRUE;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- g_return_val_if_fail (self->state == GST_SIGNAL_PROCESSOR_STATE_INITIALIZED,
- FALSE);
-
- GST_INFO_OBJECT (self, "start()");
-
- if (klass->start)
- ret = klass->start (self);
-
- if (!ret)
- goto start_failed;
-
- self->state = GST_SIGNAL_PROCESSOR_STATE_RUNNING;
-
- return ret;
-
-start_failed:
- {
- GST_INFO_OBJECT (self, "start() failed");
- return ret;
- }
-}
-
-static void
-gst_signal_processor_stop (GstSignalProcessor * self)
-{
- GstSignalProcessorClass *klass;
- GstElement *elem;
- GList *sinks;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
- elem = GST_ELEMENT (self);
-
- GST_INFO_OBJECT (self, "stop()");
-
- g_return_if_fail (self->state == GST_SIGNAL_PROCESSOR_STATE_RUNNING);
-
- if (klass->stop)
- klass->stop (self);
-
- for (sinks = elem->sinkpads; sinks; sinks = sinks->next)
- /* force set_caps when going to RUNNING, see note in _setcaps () */
- gst_pad_set_caps (GST_PAD (sinks->data), NULL);
-
- /* should also flush our buffers perhaps? */
-
- self->state = GST_SIGNAL_PROCESSOR_STATE_INITIALIZED;
-}
-
-static void
-gst_signal_processor_cleanup (GstSignalProcessor * self)
-{
- GstSignalProcessorClass *klass;
- gint i;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- GST_INFO_OBJECT (self, "cleanup()");
-
- g_return_if_fail (self->state == GST_SIGNAL_PROCESSOR_STATE_INITIALIZED);
-
- if (klass->cleanup)
- klass->cleanup (self);
-
- for (i = 0; i < klass->num_group_in; ++i) {
- g_free (self->group_in[i].buffer);
- memset (&self->group_in[i], 0, sizeof (GstSignalProcessorGroup));
- }
-
- for (i = 0; i < klass->num_group_out; ++i) {
- g_free (self->group_out[i].buffer);
- memset (&self->group_out[i], 0, sizeof (GstSignalProcessorGroup));
- }
-
- self->state = GST_SIGNAL_PROCESSOR_STATE_NULL;
-}
-
-static gboolean
-gst_signal_processor_setcaps_pull (GstSignalProcessor * self, GstPad * pad,
- GstCaps * caps)
-{
- if (GST_PAD_IS_SRC (pad)) {
- GList *l;
-
- for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
- if (!gst_pad_set_caps (GST_PAD (l->data), caps))
- goto src_setcaps_failed;
- } else {
- GstPad *peer;
- gboolean res;
-
- peer = gst_pad_get_peer (pad);
- if (!peer)
- goto unlinked_sink;
-
- res = gst_pad_set_caps (peer, caps);
- gst_object_unref (peer);
-
- if (!res)
- goto peer_setcaps_failed;
- }
-
- return TRUE;
-
-src_setcaps_failed:
- {
- /* not logging, presumably the sink pad already logged */
- return FALSE;
- }
-unlinked_sink:
- {
- GST_WARNING_OBJECT (self, "unlinked sink pad %" GST_PTR_FORMAT ", I wonder "
- "how we passed activate_pull()", pad);
- return FALSE;
- }
-peer_setcaps_failed:
- {
- GST_INFO_OBJECT (self, "peer of %" GST_PTR_FORMAT " did not accept caps",
- pad);
- return FALSE;
- }
-}
-
-static gboolean
-gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
-{
- GstSignalProcessor *self;
-
- self = GST_SIGNAL_PROCESSOR (gst_pad_get_parent (pad));
-
- if (self->mode == GST_PAD_MODE_PULL && !gst_caps_is_equal (caps, self->caps)
- && !gst_signal_processor_setcaps_pull (self, pad, caps))
- goto setcaps_pull_failed;
-
- /* the whole processor has one caps; if the sample rate changes, let subclass
- implementations know */
- if (!gst_caps_is_equal (caps, self->caps)) {
- GstStructure *s;
-
- GST_DEBUG_OBJECT (pad, "got caps %" GST_PTR_FORMAT, caps);
-
- if (GST_SIGNAL_PROCESSOR_IS_RUNNING (self))
- gst_signal_processor_stop (self);
- if (GST_SIGNAL_PROCESSOR_IS_INITIALIZED (self))
- gst_signal_processor_cleanup (self);
-
- s = gst_caps_get_structure (caps, 0);
- if (!gst_structure_get_int (s, "rate", &self->sample_rate))
- goto no_sample_rate;
-
- if (!gst_signal_processor_setup (self, caps))
- goto start_or_setup_failed;
-
- gst_caps_replace (&self->caps, caps);
- } else {
- GST_DEBUG_OBJECT (self, "skipping, have caps already");
- }
-
- /* we use this method to manage the processor's state, hence the caps clearing
- in stop(). so it can be that we enter here just to manage the processor's
- state, to take it to RUNNING from already being INITIALIZED with the right
- sample rate (e.g., when having gone PLAYING->READY->PLAYING). make sure
- when we leave that the processor is RUNNING. */
- if (!GST_SIGNAL_PROCESSOR_IS_INITIALIZED (self)
- && !gst_signal_processor_setup (self, self->caps))
- goto start_or_setup_failed;
- if (!GST_SIGNAL_PROCESSOR_IS_RUNNING (self)
- && !gst_signal_processor_start (self))
- goto start_or_setup_failed;
-
- gst_object_unref (self);
-
- return TRUE;
-
-no_sample_rate:
- {
- GST_WARNING_OBJECT (self, "got no sample-rate");
- gst_object_unref (self);
- return FALSE;
- }
-start_or_setup_failed:
- {
- GST_WARNING_OBJECT (self, "start or setup failed");
- gst_object_unref (self);
- return FALSE;
- }
-setcaps_pull_failed:
- {
- GST_WARNING_OBJECT (self, "activating in pull-mode failed");
- gst_object_unref (self);
- return FALSE;
- }
-}
-
-/* De-interleave a pad (gstreamer => plugin) */
-static void
-gst_signal_processor_deinterleave_group (GstSignalProcessorGroup * group,
- guint nframes)
-{
- guint i, j;
- g_assert (group->nframes == nframes);
- g_assert (group->interleaved_map.data);
- g_assert (group->buffer);
- for (i = 0; i < nframes; ++i)
- for (j = 0; j < group->channels; ++j)
- group->buffer[(j * nframes) + i]
- = group->interleaved_map.data[(i * group->channels) + j];
-}
-
-/* Interleave a pad (plugin => gstreamer) */
-static void
-gst_signal_processor_interleave_group (GstSignalProcessorGroup * group,
- guint nframes)
-{
- guint i, j;
- g_assert (group->nframes == nframes);
- g_assert (group->interleaved_map.data);
- g_assert (group->buffer);
- for (i = 0; i < nframes; ++i)
- for (j = 0; j < group->channels; ++j)
- group->interleaved_map.data[(i * group->channels) + j]
- = group->buffer[(j * nframes) + i];
-}
-
-static gboolean
-gst_signal_processor_event (GstPad * pad, GstObject * parent, GstEvent * event)
-{
- GstSignalProcessor *self;
- GstSignalProcessorClass *bclass;
- gboolean ret;
-
- self = GST_SIGNAL_PROCESSOR (parent);
- bclass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- GST_DEBUG_OBJECT (pad, "got event %s", GST_EVENT_TYPE_NAME (event));
-
- /* FIXME, this probably isn't the correct interface: what about return values,
- * what about overriding event_default
- * Sync with GstBaseTransform::gst_base_transform_sink_event */
- if (bclass->event)
- bclass->event (self, event);
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_CAPS:
- {
- GstCaps *caps;
-
- gst_event_parse_caps (event, &caps);
- ret = gst_signal_processor_setcaps (pad, caps);
- gst_event_unref (event);
- break;
- }
- case GST_EVENT_FLUSH_START:
- ret = gst_pad_event_default (pad, parent, event);
- break;
- case GST_EVENT_FLUSH_STOP:
- /* clear errors now */
- self->flow_state = GST_FLOW_OK;
- ret = gst_pad_event_default (pad, parent, event);
- break;
- default:
- ret = gst_pad_event_default (pad, parent, event);
- break;
- }
-
- return ret;
-}
-
-/*
- * gst_signal_processor_prepare:
- * @self: the element
- * nframes: wanted sample frames
- *
- * Checks if wan
- *
- * Returns: available sample frames
- */
-static guint
-gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
-{
- GstElement *elem = (GstElement *) self;
- GstSignalProcessorClass *klass;
- GList *sinks, *srcs;
- guint samples_avail = nframes;
- guint i, in_group_index = 0, out_group_index = 0;
- gboolean is_gap = FALSE;
- GstClockTime ts, tss = GST_CLOCK_TIME_NONE, tse = GST_CLOCK_TIME_NONE;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- /* first, assign audio_in pointers, and determine the number of samples that
- * we can process */
- i = 0;
- for (sinks = elem->sinkpads; sinks; sinks = sinks->next, ++i) {
- GstSignalProcessorPad *sinkpad;
-
- sinkpad = (GstSignalProcessorPad *) sinks->data;
- g_assert (sinkpad->samples_avail > 0);
- samples_avail = MIN (samples_avail, sinkpad->samples_avail);
- if (sinkpad->channels > 1) {
- GstSignalProcessorGroup *group = &self->group_in[in_group_index++];
- group->interleaved_map.data = sinkpad->map.data;
- /* allocate buffer for de-interleaving */
- if (!group->buffer || group->channels < sinkpad->channels
- || group->nframes < samples_avail) {
- group->buffer =
- (gfloat *) g_realloc (group->buffer,
- samples_avail * sinkpad->channels * sizeof (gfloat));
- memset (group->buffer, '\0',
- samples_avail * sinkpad->channels * sizeof (gfloat));
- }
- g_assert (group->buffer);
- group->channels = sinkpad->channels;
- group->nframes = samples_avail;
- gst_signal_processor_deinterleave_group (group, samples_avail);
- } else {
- self->audio_in[sinkpad->index] = sinkpad->map;
- }
- }
-
- GST_LOG_OBJECT (self, "want %u samples, have %u samples", nframes,
- samples_avail);
-
- /* FIXME: return if samples_avail==0 ? */
-
- if ((sinks = elem->sinkpads)) {
- is_gap = TRUE;
- while (sinks) {
- GstSignalProcessorPad *sinkpad = (GstSignalProcessorPad *) sinks->data;
-
- is_gap &= GST_BUFFER_FLAG_IS_SET (sinkpad->pen, GST_BUFFER_FLAG_GAP);
- ts = GST_BUFFER_TIMESTAMP (sinkpad->pen);
- if (GST_CLOCK_TIME_IS_VALID (ts)) {
- tss = !GST_CLOCK_TIME_IS_VALID (tss) ? ts : MIN (tss, ts);
- tse = !GST_CLOCK_TIME_IS_VALID (tse) ? ts : MAX (tse, ts);
- }
- sinks = sinks->next;
- }
- ts = (tss == tse) ? tss : GST_CLOCK_TIME_NONE;
- GST_LOG_OBJECT (self, "is gap: %d, tss %" GST_TIME_FORMAT ", tse %"
- GST_TIME_FORMAT, is_gap, GST_TIME_ARGS (tss), GST_TIME_ARGS (tse));
- } else {
- /* FIXME: calculate own timestamps */
- ts = GST_CLOCK_TIME_NONE;
- }
-
- /* 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;
-
- GST_LOG_OBJECT (self, "allocating %d buffers", g_list_length (srcs));
-
- if (GST_SIGNAL_PROCESSOR_CLASS_CAN_PROCESS_IN_PLACE (klass)) {
- while (sinks && srcs) {
- GstSignalProcessorPad *sinkpad, *srcpad;
-
- sinkpad = (GstSignalProcessorPad *) sinks->data;
- srcpad = (GstSignalProcessorPad *) srcs->data;
-
- if (sinkpad->channels == 1 && sinkpad->channels == srcpad->channels
- && gst_buffer_get_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->map;
- self->pending_out++;
-
- srcs = srcs->next;
- }
-
- sinks = sinks->next;
- }
- }
-
- g_return_val_if_fail (GST_SIGNAL_PROCESSOR_IS_RUNNING (self), 0);
-
- /* now allocate for any remaining outputs */
- while (srcs) {
- GstSignalProcessorPad *srcpad;
-
- srcpad = (GstSignalProcessorPad *) srcs->data;
-
- srcpad->pen =
- gst_buffer_new_allocate (NULL,
- samples_avail * srcpad->channels * sizeof (gfloat), NULL);
-
- if (srcpad->channels > 1) {
- GstSignalProcessorGroup *group = &self->group_out[out_group_index++];
- gst_buffer_map (srcpad->pen, &group->interleaved_map, GST_MAP_READWRITE);
- if (!group->buffer || group->channels < srcpad->channels
- || group->nframes < samples_avail)
- group->buffer =
- (gfloat *) g_realloc (group->buffer,
- samples_avail * srcpad->channels * sizeof (gfloat));
- group->channels = srcpad->channels;
- group->nframes = samples_avail;
- self->pending_out++;
- } else {
- gst_buffer_map (srcpad->pen, &self->audio_out[srcpad->index],
- GST_MAP_READWRITE);
- self->pending_out++;
- }
-
- /* set time stamp */
- GST_BUFFER_TIMESTAMP (srcpad->pen) = ts;
- /* FIXME: handle gap flag ? */
-
- srcs = srcs->next;
- }
-
- /* update controlled parameters */
- if (samples_avail && GST_CLOCK_TIME_IS_VALID (ts)) {
- gst_object_sync_values ((GstObject *) self, ts);
- }
-
- 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->map.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->map.data += nprocessed * sinkpad->channels; /* gfloat* arithmetic */
- }
- }
-}
-
-static void
-gst_signal_processor_update_outputs (GstSignalProcessor * self,
- guint nprocessed)
-{
- GstSignalProcessorClass *klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
- guint i;
- for (i = 0; i < klass->num_group_out; ++i)
- gst_signal_processor_interleave_group (&self->group_out[i], nprocessed);
-}
-
-static gboolean
-gst_signal_processor_process (GstSignalProcessor * self, guint nframes)
-{
- GstSignalProcessorClass *klass;
-
- /* check if we have buffers enqueued */
- g_return_val_if_fail (self->pending_in == 0, FALSE);
- g_return_val_if_fail (self->pending_out == 0, FALSE);
-
- /* check how much input is available and prepare output buffers */
- nframes = gst_signal_processor_prepare (self, nframes);
- 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);
- gst_signal_processor_update_outputs (self, nframes);
-
- return TRUE;
-
-flow_error:
- {
- GST_WARNING_OBJECT (self,
- "gst_signal_processor_prepare() returned %d, flow_ref=%s", nframes,
- gst_flow_get_name (self->flow_state));
- return FALSE;
- }
-}
-
-static void
-gst_signal_processor_pen_buffer (GstSignalProcessor * self, GstPad * pad,
- GstBuffer * buffer)
-{
- GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pad;
-
- if (spad->pen)
- goto had_buffer;
-
- /* keep the reference */
- spad->pen = buffer;
- gst_buffer_map (buffer, &spad->map, GST_MAP_READWRITE);
- spad->samples_avail = spad->map.size / sizeof (float) / spad->channels;
-
- g_assert (self->pending_in != 0);
-
- self->pending_in--;
-
- return;
-
- /* ERRORS */
-had_buffer:
- {
- GST_WARNING ("Pad %s:%s already has penned buffer",
- GST_DEBUG_PAD_NAME (pad));
- gst_buffer_unref (buffer);
- return;
- }
-}
-
-static void
-gst_signal_processor_flush (GstSignalProcessor * self)
-{
- GList *pads;
- GstSignalProcessorClass *klass;
-
- klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
-
- GST_INFO_OBJECT (self, "flush()");
-
- /* release enqueued buffers */
- for (pads = GST_ELEMENT (self)->pads; pads; pads = pads->next) {
- GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pads->data;
-
- if (spad->pen) {
- gst_buffer_unmap (spad->pen, &spad->map);
- gst_buffer_unref (spad->pen);
- spad->pen = NULL;
- spad->samples_avail = 0;
- }
- }
-
- /* no outputs prepared and inputs for each pad needed */
- self->pending_out = 0;
- self->pending_in = klass->num_audio_in;
-}
-
-static void
-gst_signal_processor_do_pulls (GstSignalProcessor * self, guint nframes)
-{
- GList *sinkpads;
-
- /* FIXME: 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;
- }
-
- buf = NULL;
- ret =
- gst_pad_pull_range (GST_PAD (spad), -1, nframes * sizeof (gfloat),
- &buf);
-
- if (ret != GST_FLOW_OK) {
- gst_signal_processor_flush (self);
- self->flow_state = ret;
- return;
- } else if (!buf) {
- g_critical ("Pull failed to make a buffer!");
- self->flow_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->flow_state = GST_FLOW_ERROR;
- } else {
- gst_signal_processor_process (self, nframes);
- }
-}
-
-static GstFlowReturn
-gst_signal_processor_getrange (GstPad * pad, GstObject * parent, guint64 offset,
- guint length, GstBuffer ** buffer)
-{
- GstSignalProcessor *self;
- GstSignalProcessorPad *spad = (GstSignalProcessorPad *) pad;
- GstFlowReturn ret = GST_FLOW_ERROR;
-
- self = GST_SIGNAL_PROCESSOR (parent);
-
- 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, length / sizeof (gfloat));
- if (!spad->pen) {
- /* this is an error condition */
- *buffer = NULL;
- ret = self->flow_state;
- } else {
- *buffer = spad->pen;
- spad->pen = NULL;
- self->pending_out--;
- ret = GST_FLOW_OK;
- }
- }
-
- GST_DEBUG_OBJECT (self, "returns %s", gst_flow_get_name (ret));
-
- 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;
- GstBuffer *buffer;
-
- if (!spad->pen) {
- g_warning ("Unexpectedly empty buffer pen for pad %s:%s",
- GST_DEBUG_PAD_NAME (spad));
- continue;
- }
-
- /* take buffer from pen */
- buffer = spad->pen;
- spad->pen = NULL;
-
- ret = gst_pad_push (GST_PAD (spad), buffer);
-
- if (ret != GST_FLOW_OK) {
- gst_signal_processor_flush (self);
- self->flow_state = ret;
- return;
- } else {
- g_assert (self->pending_out > 0);
- self->pending_out--;
- }
- }
-
- if (self->pending_out != 0) {
- g_critical ("Something wierd happened...");
- self->flow_state = GST_FLOW_ERROR;
- }
-}
-
-static GstFlowReturn
-gst_signal_processor_chain (GstPad * pad, GstObject * parent,
- GstBuffer * buffer)
-{
- GstSignalProcessor *self;
-
- self = GST_SIGNAL_PROCESSOR (parent);
-
- GST_LOG_OBJECT (self, "chain(%s:%s, %p) : p_in=%u, p_out=%u",
- GST_DEBUG_PAD_NAME (pad), buffer, self->pending_in, self->pending_out);
-
- gst_signal_processor_pen_buffer (self, pad, buffer);
-
- if (self->pending_in == 0) {
- if (gst_signal_processor_process (self, G_MAXUINT))
- gst_signal_processor_do_pushes (self);
- }
-
- return self->flow_state;
-}
-
-static gboolean
-gst_signal_processor_sink_activate_mode (GstPad * pad, GstObject * parent,
- GstPadMode mode, gboolean active)
-{
- gboolean result;
- GstSignalProcessor *self;
-
- self = GST_SIGNAL_PROCESSOR (parent);
-
- switch (mode) {
- case GST_PAD_MODE_PUSH:
- if (active) {
- if (self->mode == GST_PAD_MODE_NONE) {
- self->mode = GST_PAD_MODE_PUSH;
- result = TRUE;
- } else if (self->mode == GST_PAD_MODE_PUSH) {
- result = TRUE;
- } else {
- g_warning ("foo");
- result = FALSE;
- }
- } else {
- if (self->mode == GST_PAD_MODE_NONE) {
- result = TRUE;
- } else if (self->mode == GST_PAD_MODE_PUSH) {
- self->mode = GST_PAD_MODE_NONE;
- result = TRUE;
- } else {
- g_warning ("foo");
- result = FALSE;
- }
- }
- break;
- default:
- result = FALSE;
- break;
- }
-
- GST_DEBUG_OBJECT (self, "result : %d", result);
-
- return result;
-}
-
-static gboolean
-gst_signal_processor_src_activate_mode (GstPad * pad, GstObject * parent,
- GstPadMode mode, gboolean active)
-{
- gboolean result;
- GstSignalProcessor *self;
-
- self = GST_SIGNAL_PROCESSOR (parent);
-
- switch (mode) {
- case GST_PAD_MODE_PUSH:
- if (active) {
- if (self->mode == GST_PAD_MODE_NONE) {
- GList *l;
-
- result = TRUE;
- for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
- result &= gst_pad_activate_mode (pad, GST_PAD_MODE_PULL, active);
- if (result)
- self->mode = GST_PAD_MODE_PULL;
- } else if (self->mode == GST_PAD_MODE_PULL) {
- result = TRUE;
- } else {
- g_warning ("foo");
- result = FALSE;
- }
- } else {
- if (self->mode == GST_PAD_MODE_NONE) {
- result = TRUE;
- } else if (self->mode == GST_PAD_MODE_PULL) {
- GList *l;
-
- result = TRUE;
- for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
- result &= gst_pad_activate_mode (pad, GST_PAD_MODE_PULL, active);
- if (result)
- self->mode = GST_PAD_MODE_NONE;
- result = TRUE;
- } else {
- g_warning ("foo");
- result = FALSE;
- }
- }
- break;
- default:
- result = FALSE;
- break;
- }
-
- GST_DEBUG_OBJECT (self, "result : %d", result);
-
- return result;
-}
-
-static GstStateChangeReturn
-gst_signal_processor_change_state (GstElement * element,
- GstStateChange transition)
-{
- GstSignalProcessor *self;
- GstStateChangeReturn result;
-
- self = GST_SIGNAL_PROCESSOR (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- self->flow_state = GST_FLOW_OK;
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- break;
- default:
- break;
- }
-
- if ((result =
- GST_ELEMENT_CLASS (parent_class)->change_state (element,
- transition)) == GST_STATE_CHANGE_FAILURE)
- goto failure;
-
- switch (transition) {
- case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- if (GST_SIGNAL_PROCESSOR_IS_RUNNING (self))
- gst_signal_processor_stop (self);
- gst_signal_processor_flush (self);
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- if (GST_SIGNAL_PROCESSOR_IS_INITIALIZED (self))
- gst_signal_processor_cleanup (self);
- break;
- default:
- break;
- }
-
- return result;
-
- /* ERRORS */
-failure:
- {
- GST_DEBUG_OBJECT (element, "parent failed state change");
- return result;
- }
-}
projects / platform / upstream / gstreamer.git / commitdiff