--- /dev/null
+/* GStreamer
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstfrei0r.h"
+#include "gstfrei0rsrc.h"
+
+typedef struct
+{
+ f0r_plugin_info_t info;
+ GstFrei0rFuncTable ftable;
+} GstFrei0rSrcClassData;
+
+static gboolean
+gst_frei0r_src_set_caps (GstBaseSrc * src, GstCaps * caps)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (src);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (src);
+
+ if (!gst_video_format_parse_caps (caps, &self->fmt, &self->width,
+ &self->height)
+ || !gst_video_parse_caps_framerate (caps, &self->fps_n, &self->fps_d))
+ return FALSE;
+
+ if (self->f0r_instance) {
+ klass->ftable->destruct (self->f0r_instance);
+ self->f0r_instance = NULL;
+ }
+
+ self->f0r_instance =
+ gst_frei0r_instance_construct (klass->ftable, klass->properties,
+ klass->n_properties, self->property_cache, self->width, self->height);
+
+ return TRUE;
+}
+
+static GstFlowReturn
+gst_frei0r_src_create (GstPushSrc * src, GstBuffer ** buf)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (src);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (src);
+ guint size, newsize;
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstBuffer *outbuf = NULL;
+ gdouble time;
+
+ *buf = NULL;
+
+ if (G_UNLIKELY (!self->f0r_instance))
+ return GST_FLOW_NOT_NEGOTIATED;
+
+ newsize = gst_video_format_get_size (self->fmt, self->width, self->height);
+
+ ret =
+ gst_pad_alloc_buffer_and_set_caps (GST_BASE_SRC_PAD (src),
+ GST_BUFFER_OFFSET_NONE, newsize, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)),
+ &outbuf);
+ if (ret != GST_FLOW_OK)
+ return ret;
+
+ /* Format might have changed */
+ size = GST_BUFFER_SIZE (outbuf);
+ newsize = gst_video_format_get_size (self->fmt, self->width, self->height);
+
+ if (size != newsize) {
+ gst_buffer_unref (outbuf);
+ outbuf = gst_buffer_new_and_alloc (newsize);
+ gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
+ }
+
+ GST_BUFFER_TIMESTAMP (outbuf) =
+ gst_util_uint64_scale (self->n_frames, GST_SECOND * self->fps_d,
+ self->fps_n);
+ GST_BUFFER_OFFSET (outbuf) = self->n_frames;
+ self->n_frames++;
+ GST_BUFFER_OFFSET_END (outbuf) = self->n_frames;
+ GST_BUFFER_DURATION (outbuf) =
+ gst_util_uint64_scale (self->n_frames, GST_SECOND * self->fps_d,
+ self->fps_n) - GST_BUFFER_TIMESTAMP (outbuf);
+
+ time = ((gdouble) GST_BUFFER_TIMESTAMP (outbuf)) / GST_SECOND;
+
+ if (klass->ftable->update2)
+ klass->ftable->update2 (self->f0r_instance, time, NULL, NULL, NULL,
+ (guint32 *) GST_BUFFER_DATA (outbuf));
+ else
+ klass->ftable->update (self->f0r_instance, time, NULL,
+ (guint32 *) GST_BUFFER_DATA (outbuf));
+
+ *buf = outbuf;
+
+ return GST_FLOW_OK;
+}
+
+static void
+gst_frei0r_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
+ GstClockTime * start, GstClockTime * end)
+{
+ /* for live sources, sync on the timestamp of the buffer */
+ if (gst_base_src_is_live (basesrc)) {
+ GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
+
+ if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
+ /* get duration to calculate end time */
+ GstClockTime duration = GST_BUFFER_DURATION (buffer);
+
+ if (GST_CLOCK_TIME_IS_VALID (duration)) {
+ *end = timestamp + duration;
+ }
+ *start = timestamp;
+ }
+ } else {
+ *start = -1;
+ *end = -1;
+ }
+}
+
+static gboolean
+gst_frei0r_src_start (GstBaseSrc * basesrc)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (basesrc);
+
+ self->n_frames = 0;
+
+ return TRUE;
+}
+
+static gboolean
+gst_frei0r_src_is_seekable (GstBaseSrc * psrc)
+{
+ return TRUE;
+}
+
+static gboolean
+gst_frei0r_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
+{
+ GstClockTime time;
+ GstFrei0rSrc *self = GST_FREI0R_SRC (bsrc);
+
+ segment->time = segment->start;
+ time = segment->last_stop;
+
+ /* now move to the time indicated */
+ if (self->fps_n) {
+ self->n_frames = gst_util_uint64_scale (time,
+ self->fps_n, self->fps_d * GST_SECOND);
+ } else {
+ self->n_frames = 0;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gst_frei0r_src_query (GstBaseSrc * bsrc, GstQuery * query)
+{
+ gboolean res;
+ GstFrei0rSrc *self = GST_FREI0R_SRC (bsrc);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (self);
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ if (src_fmt == dest_fmt) {
+ dest_val = src_val;
+ goto done;
+ }
+
+ switch (src_fmt) {
+ case GST_FORMAT_DEFAULT:
+ switch (dest_fmt) {
+ case GST_FORMAT_TIME:
+ /* frames to time */
+ if (self->fps_n) {
+ dest_val = gst_util_uint64_scale (src_val,
+ self->fps_d * GST_SECOND, self->fps_n);
+ } else {
+ dest_val = 0;
+ }
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case GST_FORMAT_TIME:
+ switch (dest_fmt) {
+ case GST_FORMAT_DEFAULT:
+ /* time to frames */
+ if (self->fps_n) {
+ dest_val = gst_util_uint64_scale (src_val,
+ self->fps_n, self->fps_d * GST_SECOND);
+ } else {
+ dest_val = 0;
+ }
+ break;
+ default:
+ goto error;
+ }
+ break;
+ default:
+ goto error;
+ }
+ done:
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ res = TRUE;
+ break;
+ }
+ default:
+ res =
+ GST_BASE_SRC_CLASS (g_type_class_peek_parent (klass))->query (bsrc,
+ query);
+ }
+ return res;
+
+ /* ERROR */
+error:
+ {
+ GST_DEBUG_OBJECT (self, "query failed");
+ return FALSE;
+ }
+}
+
+static void
+gst_frei0r_src_src_fixate (GstPad * pad, GstCaps * caps)
+{
+ GstStructure *structure;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ gst_structure_fixate_field_nearest_int (structure, "width", 320);
+ gst_structure_fixate_field_nearest_int (structure, "height", 240);
+ gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
+}
+
+static void
+gst_frei0r_src_finalize (GObject * object)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (object);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
+
+ if (self->f0r_instance) {
+ klass->ftable->destruct (self->f0r_instance);
+ self->f0r_instance = NULL;
+ }
+
+ if (self->property_cache)
+ gst_frei0r_property_cache_free (klass->properties, self->property_cache,
+ klass->n_properties);
+ self->property_cache = NULL;
+
+ G_OBJECT_CLASS (g_type_class_peek_parent (klass))->finalize (object);
+}
+
+static void
+gst_frei0r_src_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (object);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
+
+ if (!gst_frei0r_get_property (self->f0r_instance, klass->ftable,
+ klass->properties, klass->n_properties, self->property_cache, prop_id,
+ value))
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+}
+
+static void
+gst_frei0r_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstFrei0rSrc *self = GST_FREI0R_SRC (object);
+ GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
+
+ if (!gst_frei0r_set_property (self->f0r_instance, klass->ftable,
+ klass->properties, klass->n_properties, self->property_cache, prop_id,
+ value))
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+}
+
+static void
+gst_frei0r_src_class_init (GstFrei0rSrcClass * klass,
+ GstFrei0rSrcClassData * class_data)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
+ GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
+ GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
+ GstPadTemplate *templ;
+ GstCaps *caps;
+ gchar *author;
+
+ klass->ftable = &class_data->ftable;
+ klass->info = &class_data->info;
+
+ gobject_class->finalize = gst_frei0r_src_finalize;
+ gobject_class->set_property = gst_frei0r_src_set_property;
+ gobject_class->get_property = gst_frei0r_src_get_property;
+
+ klass->n_properties = klass->info->num_params;
+ klass->properties = g_new0 (GstFrei0rProperty, klass->n_properties);
+
+ gst_frei0r_klass_install_properties (gobject_class, klass->ftable,
+ klass->properties, klass->n_properties);
+
+ author =
+ g_strdup_printf
+ ("Sebastian Dröge <sebastian.droege@collabora.co.uk>, %s",
+ class_data->info.author);
+ gst_element_class_set_details_simple (gstelement_class, class_data->info.name,
+ "Src/Video", class_data->info.explanation, author);
+ g_free (author);
+
+ caps = gst_frei0r_caps_from_color_model (class_data->info.color_model);
+
+ templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
+ gst_element_class_add_pad_template (gstelement_class, templ);
+
+ gstbasesrc_class->set_caps = gst_frei0r_src_set_caps;
+ gstbasesrc_class->is_seekable = gst_frei0r_src_is_seekable;
+ gstbasesrc_class->do_seek = gst_frei0r_src_do_seek;
+ gstbasesrc_class->query = gst_frei0r_src_query;
+ gstbasesrc_class->get_times = gst_frei0r_src_get_times;
+ gstbasesrc_class->start = gst_frei0r_src_start;
+
+ gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_frei0r_src_create);
+}
+
+static void
+gst_frei0r_src_init (GstFrei0rSrc * self, GstFrei0rSrcClass * klass)
+{
+ GstPad *pad = GST_BASE_SRC_PAD (self);
+
+ self->property_cache =
+ gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
+
+ gst_pad_set_fixatecaps_function (pad, gst_frei0r_src_src_fixate);
+
+ gst_base_src_set_format (GST_BASE_SRC_CAST (self), GST_FORMAT_TIME);
+}
+
+gboolean
+gst_frei0r_src_register (GstPlugin * plugin, const f0r_plugin_info_t * info,
+ const GstFrei0rFuncTable * ftable)
+{
+ GTypeInfo typeinfo = {
+ sizeof (GstFrei0rSrcClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_frei0r_src_class_init,
+ NULL,
+ NULL,
+ sizeof (GstFrei0rSrc),
+ 0,
+ (GInstanceInitFunc) gst_frei0r_src_init
+ };
+ GType type;
+ gchar *type_name, *tmp;
+ GstFrei0rSrcClassData *class_data;
+
+ tmp = g_strdup_printf ("frei0r-%s", info->name);
+ type_name = g_ascii_strdown (tmp, -1);
+ g_free (tmp);
+ g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
+
+ if (g_type_from_name (type_name)) {
+ GST_WARNING ("Type '%s' already exists", type_name);
+ return FALSE;
+ }
+
+ if (!ftable->init ()) {
+ GST_ERROR ("Initializing plugin failed");
+ return FALSE;
+ }
+
+ class_data = g_new0 (GstFrei0rSrcClassData, 1);
+ memcpy (&class_data->info, info, sizeof (f0r_plugin_info_t));
+ memcpy (&class_data->ftable, ftable, sizeof (GstFrei0rFuncTable));
+ typeinfo.class_data = class_data;
+
+ type = g_type_register_static (GST_TYPE_PUSH_SRC, type_name, &typeinfo, 0);
+ return (gst_element_register (plugin, type_name, GST_RANK_NONE, type));
+}
projects / platform / upstream / gstreamer.git / commitdiff