/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * * gstfakesrc.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. */ /** * SECTION:element-fakesrc * @short_description: Generate (meaningless) buffers * @see_also: #GstFakeSink * * * * The fakesrc element is a multipurpose element that can generate * a wide range of buffers and can operate in various scheduling modes. * * * It is mostly used as a testing element, one trivial example for testing * basic GStreamer core functionality is: * * Example launch line * * * gst-launch -v fakesrc num-buffers=5 ! fakesink * * This pipeline will push 5 empty buffers to the fakesink element and then * sends an EOS. * * * Last reviewed on 2005-12-02 (0.9.7) * * */ #include #include #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "gstfakesrc.h" #include static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); GST_DEBUG_CATEGORY_STATIC (gst_fake_src_debug); #define GST_CAT_DEFAULT gst_fake_src_debug static GstElementDetails gst_fake_src_details = GST_ELEMENT_DETAILS ("Fake Source", "Source", "Push empty (no data) buffers around", "Erik Walthinsen , " "Wim Taymans "); /* FakeSrc signals and args */ enum { /* FILL ME */ SIGNAL_HANDOFF, LAST_SIGNAL }; #define DEFAULT_OUTPUT FAKE_SRC_FIRST_LAST_LOOP #define DEFAULT_DATA FAKE_SRC_DATA_ALLOCATE #define DEFAULT_SIZETYPE FAKE_SRC_SIZETYPE_EMPTY #define DEFAULT_SIZEMIN 0 #define DEFAULT_SIZEMAX 4096 #define DEFAULT_FILLTYPE FAKE_SRC_FILLTYPE_ZERO #define DEFAULT_DATARATE 0 #define DEFAULT_SYNC FALSE #define DEFAULT_PATTERN NULL #define DEFAULT_EOS FALSE #define DEFAULT_SIGNAL_HANDOFFS FALSE #define DEFAULT_SILENT FALSE #define DEFAULT_DUMP FALSE #define DEFAULT_PARENTSIZE 4096*10 #define DEFAULT_CAN_ACTIVATE_PULL TRUE #define DEFAULT_CAN_ACTIVATE_PUSH TRUE enum { PROP_0, PROP_OUTPUT, PROP_DATA, PROP_SIZETYPE, PROP_SIZEMIN, PROP_SIZEMAX, PROP_FILLTYPE, PROP_DATARATE, PROP_SYNC, PROP_PATTERN, PROP_EOS, PROP_SIGNAL_HANDOFFS, PROP_SILENT, PROP_DUMP, PROP_PARENTSIZE, PROP_LAST_MESSAGE, PROP_CAN_ACTIVATE_PULL, PROP_CAN_ACTIVATE_PUSH, PROP_IS_LIVE }; /* not implemented #define GST_TYPE_FAKE_SRC_OUTPUT (gst_fake_src_output_get_type()) static GType gst_fake_src_output_get_type (void) { static GType fakesrc_output_type = 0; static GEnumValue fakesrc_output[] = { {FAKE_SRC_FIRST_LAST_LOOP, "1", "First-Last loop"}, {FAKE_SRC_LAST_FIRST_LOOP, "2", "Last-First loop"}, {FAKE_SRC_PING_PONG, "3", "Ping-Pong"}, {FAKE_SRC_ORDERED_RANDOM, "4", "Ordered Random"}, {FAKE_SRC_RANDOM, "5", "Random"}, {FAKE_SRC_PATTERN_LOOP, "6", "Patttern loop"}, {FAKE_SRC_PING_PONG_PATTERN, "7", "Ping-Pong Pattern"}, {FAKE_SRC_GET_ALWAYS_SUCEEDS, "8", "'_get' Always succeeds"}, {0, NULL, NULL}, }; if (!fakesrc_output_type) { fakesrc_output_type = g_enum_register_static ("GstFakeSrcOutput", fakesrc_output); } return fakesrc_output_type; } */ #define GST_TYPE_FAKE_SRC_DATA (gst_fake_src_data_get_type()) static GType gst_fake_src_data_get_type (void) { static GType fakesrc_data_type = 0; static GEnumValue fakesrc_data[] = { {FAKE_SRC_DATA_ALLOCATE, "Allocate data", "allocate"}, {FAKE_SRC_DATA_SUBBUFFER, "Subbuffer data", "subbuffer"}, {0, NULL, NULL}, }; if (!fakesrc_data_type) { fakesrc_data_type = g_enum_register_static ("GstFakeSrcDataType", fakesrc_data); } return fakesrc_data_type; } #define GST_TYPE_FAKE_SRC_SIZETYPE (gst_fake_src_sizetype_get_type()) static GType gst_fake_src_sizetype_get_type (void) { static GType fakesrc_sizetype_type = 0; static GEnumValue fakesrc_sizetype[] = { {FAKE_SRC_SIZETYPE_EMPTY, "Send empty buffers", "empty"}, {FAKE_SRC_SIZETYPE_FIXED, "Fixed size buffers (sizemax sized)", "fixed"}, {FAKE_SRC_SIZETYPE_RANDOM, "Random sized buffers (sizemin <= size <= sizemax)", "random"}, {0, NULL, NULL}, }; if (!fakesrc_sizetype_type) { fakesrc_sizetype_type = g_enum_register_static ("GstFakeSrcSizeType", fakesrc_sizetype); } return fakesrc_sizetype_type; } #define GST_TYPE_FAKE_SRC_FILLTYPE (gst_fake_src_filltype_get_type()) static GType gst_fake_src_filltype_get_type (void) { static GType fakesrc_filltype_type = 0; static GEnumValue fakesrc_filltype[] = { {FAKE_SRC_FILLTYPE_NOTHING, "Leave data as malloced", "nothing"}, {FAKE_SRC_FILLTYPE_ZERO, "Fill buffers with zeros", "zero"}, {FAKE_SRC_FILLTYPE_RANDOM, "Fill buffers with random crap", "random"}, {FAKE_SRC_FILLTYPE_PATTERN, "Fill buffers with pattern 0x00 -> 0xff", "pattern"}, {FAKE_SRC_FILLTYPE_PATTERN_CONT, "Fill buffers with pattern 0x00 -> 0xff that spans buffers", "pattern-span"}, {0, NULL, NULL}, }; if (!fakesrc_filltype_type) { fakesrc_filltype_type = g_enum_register_static ("GstFakeSrcFillType", fakesrc_filltype); } return fakesrc_filltype_type; } #define _do_init(bla) \ GST_DEBUG_CATEGORY_INIT (gst_fake_src_debug, "fakesrc", 0, "fakesrc element"); GST_BOILERPLATE_FULL (GstFakeSrc, gst_fake_src, GstBaseSrc, GST_TYPE_BASE_SRC, _do_init); static void gst_fake_src_finalize (GObject * object); static void gst_fake_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_fake_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_fake_src_start (GstBaseSrc * basesrc); static gboolean gst_fake_src_stop (GstBaseSrc * basesrc); static gboolean gst_fake_src_is_seekable (GstBaseSrc * basesrc); static gboolean gst_fake_src_event_handler (GstBaseSrc * src, GstEvent * event); static void gst_fake_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer, GstClockTime * start, GstClockTime * end); static GstFlowReturn gst_fake_src_create (GstBaseSrc * src, guint64 offset, guint length, GstBuffer ** buf); static guint gst_fake_src_signals[LAST_SIGNAL] = { 0 }; static void gst_fake_src_base_init (gpointer g_class) { GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&srctemplate)); gst_element_class_set_details (gstelement_class, &gst_fake_src_details); } static void gst_fake_src_class_init (GstFakeSrcClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSrcClass *gstbase_src_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbase_src_class = (GstBaseSrcClass *) klass; gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_fake_src_finalize); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_fake_src_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_fake_src_get_property); /* FIXME: this is not implemented; would make sense once basesrc and fakesrc support multiple pads g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_OUTPUT, g_param_spec_enum ("output", "output", "Output method (currently unused)", GST_TYPE_FAKE_SRC_OUTPUT, DEFAULT_OUTPUT, G_PARAM_READWRITE)); */ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DATA, g_param_spec_enum ("data", "data", "Data allocation method", GST_TYPE_FAKE_SRC_DATA, DEFAULT_DATA, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SIZETYPE, g_param_spec_enum ("sizetype", "sizetype", "How to determine buffer sizes", GST_TYPE_FAKE_SRC_SIZETYPE, DEFAULT_SIZETYPE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SIZEMIN, g_param_spec_int ("sizemin", "sizemin", "Minimum buffer size", 0, G_MAXINT, DEFAULT_SIZEMIN, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SIZEMAX, g_param_spec_int ("sizemax", "sizemax", "Maximum buffer size", 0, G_MAXINT, DEFAULT_SIZEMAX, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PARENTSIZE, g_param_spec_int ("parentsize", "parentsize", "Size of parent buffer for sub-buffered allocation", 0, G_MAXINT, DEFAULT_PARENTSIZE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILLTYPE, g_param_spec_enum ("filltype", "filltype", "How to fill the buffer, if at all", GST_TYPE_FAKE_SRC_FILLTYPE, DEFAULT_FILLTYPE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DATARATE, g_param_spec_int ("datarate", "Datarate", "Timestamps buffers with number of bytes per second (0 = none)", 0, G_MAXINT, DEFAULT_DATARATE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SYNC, g_param_spec_boolean ("sync", "Sync", "Sync to the clock to the datarate", DEFAULT_SYNC, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PATTERN, g_param_spec_string ("pattern", "pattern", "pattern", DEFAULT_PATTERN, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LAST_MESSAGE, g_param_spec_string ("last-message", "last-message", "The last status message", NULL, G_PARAM_READABLE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SILENT, g_param_spec_boolean ("silent", "Silent", "Don't produce last_message events", DEFAULT_SILENT, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SIGNAL_HANDOFFS, g_param_spec_boolean ("signal-handoffs", "Signal handoffs", "Send a signal before pushing the buffer", DEFAULT_SIGNAL_HANDOFFS, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DUMP, g_param_spec_boolean ("dump", "Dump", "Dump produced bytes to stdout", DEFAULT_DUMP, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CAN_ACTIVATE_PUSH, g_param_spec_boolean ("can-activate-push", "Can activate push", "Can activate in push mode", DEFAULT_CAN_ACTIVATE_PUSH, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CAN_ACTIVATE_PULL, g_param_spec_boolean ("can-activate-pull", "Can activate pull", "Can activate in pull mode", DEFAULT_CAN_ACTIVATE_PULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_IS_LIVE, g_param_spec_boolean ("is-live", "Is this a live source", "True if the element cannot produce data in PAUSED", FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); /** * GstFakeSrc::handoff: * @fakesrc: the fakesrc instance * @buffer: the buffer that will be pushed * @pad: the pad that will sent it * * This signal gets emitted before sending the buffer. */ gst_fake_src_signals[SIGNAL_HANDOFF] = g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstFakeSrcClass, handoff), NULL, NULL, gst_marshal_VOID__OBJECT_OBJECT, G_TYPE_NONE, 2, GST_TYPE_BUFFER, GST_TYPE_PAD); gstbase_src_class->is_seekable = GST_DEBUG_FUNCPTR (gst_fake_src_is_seekable); gstbase_src_class->start = GST_DEBUG_FUNCPTR (gst_fake_src_start); gstbase_src_class->stop = GST_DEBUG_FUNCPTR (gst_fake_src_stop); gstbase_src_class->event = GST_DEBUG_FUNCPTR (gst_fake_src_event_handler); gstbase_src_class->get_times = GST_DEBUG_FUNCPTR (gst_fake_src_get_times); gstbase_src_class->create = GST_DEBUG_FUNCPTR (gst_fake_src_create); } static void gst_fake_src_init (GstFakeSrc * fakesrc, GstFakeSrcClass * g_class) { fakesrc->output = FAKE_SRC_FIRST_LAST_LOOP; fakesrc->buffer_count = 0; fakesrc->silent = DEFAULT_SILENT; fakesrc->signal_handoffs = DEFAULT_SIGNAL_HANDOFFS; fakesrc->dump = DEFAULT_DUMP; fakesrc->pattern_byte = 0x00; fakesrc->data = FAKE_SRC_DATA_ALLOCATE; fakesrc->sizetype = FAKE_SRC_SIZETYPE_EMPTY; fakesrc->filltype = FAKE_SRC_FILLTYPE_NOTHING; fakesrc->sizemin = DEFAULT_SIZEMIN; fakesrc->sizemax = DEFAULT_SIZEMAX; fakesrc->parent = NULL; fakesrc->parentsize = DEFAULT_PARENTSIZE; fakesrc->last_message = NULL; fakesrc->datarate = DEFAULT_DATARATE; fakesrc->sync = DEFAULT_SYNC; } static void gst_fake_src_finalize (GObject * object) { GstFakeSrc *src; src = GST_FAKE_SRC (object); g_free (src->last_message); if (src->parent) { gst_buffer_unref (src->parent); src->parent = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static gboolean gst_fake_src_event_handler (GstBaseSrc * basesrc, GstEvent * event) { GstFakeSrc *src; src = GST_FAKE_SRC (basesrc); if (!src->silent) { const GstStructure *s; gchar *sstr; GST_OBJECT_LOCK (src); g_free (src->last_message); if ((s = gst_event_get_structure (event))) sstr = gst_structure_to_string (s); else sstr = g_strdup (""); src->last_message = g_strdup_printf ("event ******* E (type: %d, %s) %p", GST_EVENT_TYPE (event), sstr, event); g_free (sstr); GST_OBJECT_UNLOCK (src); g_object_notify (G_OBJECT (src), "last_message"); } return TRUE; } static void gst_fake_src_alloc_parent (GstFakeSrc * src) { GstBuffer *buf; buf = gst_buffer_new (); GST_BUFFER_DATA (buf) = g_malloc (src->parentsize); GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf); GST_BUFFER_SIZE (buf) = src->parentsize; src->parent = buf; src->parentoffset = 0; } static void gst_fake_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstFakeSrc *src; GstBaseSrc *basesrc; src = GST_FAKE_SRC (object); basesrc = GST_BASE_SRC (object); switch (prop_id) { case PROP_OUTPUT: g_warning ("not yet implemented"); break; case PROP_DATA: src->data = g_value_get_enum (value); if (src->data == FAKE_SRC_DATA_SUBBUFFER) { if (!src->parent) gst_fake_src_alloc_parent (src); } else { if (src->parent) { gst_buffer_unref (src->parent); src->parent = NULL; } } break; case PROP_SIZETYPE: src->sizetype = g_value_get_enum (value); break; case PROP_SIZEMIN: src->sizemin = g_value_get_int (value); break; case PROP_SIZEMAX: src->sizemax = g_value_get_int (value); break; case PROP_PARENTSIZE: src->parentsize = g_value_get_int (value); break; case PROP_FILLTYPE: src->filltype = g_value_get_enum (value); break; case PROP_DATARATE: src->datarate = g_value_get_int (value); break; case PROP_SYNC: src->sync = g_value_get_boolean (value); break; case PROP_PATTERN: break; case PROP_SILENT: src->silent = g_value_get_boolean (value); break; case PROP_SIGNAL_HANDOFFS: src->signal_handoffs = g_value_get_boolean (value); break; case PROP_DUMP: src->dump = g_value_get_boolean (value); break; case PROP_CAN_ACTIVATE_PUSH: g_return_if_fail (!GST_OBJECT_FLAG_IS_SET (object, GST_BASE_SRC_STARTED)); GST_BASE_SRC (src)->can_activate_push = g_value_get_boolean (value); break; case PROP_CAN_ACTIVATE_PULL: g_return_if_fail (!GST_OBJECT_FLAG_IS_SET (object, GST_BASE_SRC_STARTED)); src->can_activate_pull = g_value_get_boolean (value); break; case PROP_IS_LIVE: gst_base_src_set_live (basesrc, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_fake_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstFakeSrc *src; GstBaseSrc *basesrc; g_return_if_fail (GST_IS_FAKE_SRC (object)); src = GST_FAKE_SRC (object); basesrc = GST_BASE_SRC (object); switch (prop_id) { case PROP_OUTPUT: g_value_set_enum (value, src->output); break; case PROP_DATA: g_value_set_enum (value, src->data); break; case PROP_SIZETYPE: g_value_set_enum (value, src->sizetype); break; case PROP_SIZEMIN: g_value_set_int (value, src->sizemin); break; case PROP_SIZEMAX: g_value_set_int (value, src->sizemax); break; case PROP_PARENTSIZE: g_value_set_int (value, src->parentsize); break; case PROP_FILLTYPE: g_value_set_enum (value, src->filltype); break; case PROP_DATARATE: g_value_set_int (value, src->datarate); break; case PROP_SYNC: g_value_set_boolean (value, src->sync); break; case PROP_PATTERN: g_value_set_string (value, src->pattern); break; case PROP_SILENT: g_value_set_boolean (value, src->silent); break; case PROP_SIGNAL_HANDOFFS: g_value_set_boolean (value, src->signal_handoffs); break; case PROP_DUMP: g_value_set_boolean (value, src->dump); break; case PROP_LAST_MESSAGE: GST_OBJECT_LOCK (src); g_value_set_string (value, src->last_message); GST_OBJECT_UNLOCK (src); break; case PROP_CAN_ACTIVATE_PUSH: g_value_set_boolean (value, GST_BASE_SRC (src)->can_activate_push); break; case PROP_CAN_ACTIVATE_PULL: g_value_set_boolean (value, src->can_activate_pull); break; case PROP_IS_LIVE: g_value_set_boolean (value, gst_base_src_is_live (basesrc)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_fake_src_prepare_buffer (GstFakeSrc * src, GstBuffer * buf) { if (GST_BUFFER_SIZE (buf) == 0) return; switch (src->filltype) { case FAKE_SRC_FILLTYPE_ZERO: memset (GST_BUFFER_DATA (buf), 0, GST_BUFFER_SIZE (buf)); break; case FAKE_SRC_FILLTYPE_RANDOM: { gint i; guint8 *ptr = GST_BUFFER_DATA (buf); for (i = GST_BUFFER_SIZE (buf); i; i--) { *ptr++ = (gint8) ((255.0) * rand () / (RAND_MAX)); } break; } case FAKE_SRC_FILLTYPE_PATTERN: src->pattern_byte = 0x00; case FAKE_SRC_FILLTYPE_PATTERN_CONT: { gint i; guint8 *ptr = GST_BUFFER_DATA (buf); for (i = GST_BUFFER_SIZE (buf); i; i--) { *ptr++ = src->pattern_byte++; } break; } case FAKE_SRC_FILLTYPE_NOTHING: default: break; } } static GstBuffer * gst_fake_src_alloc_buffer (GstFakeSrc * src, guint size) { GstBuffer *buf; buf = gst_buffer_new (); GST_BUFFER_SIZE (buf) = size; if (size != 0) { switch (src->filltype) { case FAKE_SRC_FILLTYPE_NOTHING: GST_BUFFER_DATA (buf) = g_malloc (size); GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf); break; case FAKE_SRC_FILLTYPE_ZERO: GST_BUFFER_DATA (buf) = g_malloc0 (size); GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf); break; case FAKE_SRC_FILLTYPE_RANDOM: case FAKE_SRC_FILLTYPE_PATTERN: case FAKE_SRC_FILLTYPE_PATTERN_CONT: default: GST_BUFFER_DATA (buf) = g_malloc (size); GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf); gst_fake_src_prepare_buffer (src, buf); break; } } return buf; } static guint gst_fake_src_get_size (GstFakeSrc * src) { guint size; switch (src->sizetype) { case FAKE_SRC_SIZETYPE_FIXED: size = src->sizemax; break; case FAKE_SRC_SIZETYPE_RANDOM: size = src->sizemin + (guint8) (((gfloat) src->sizemax) * rand () / (RAND_MAX + (gfloat) src->sizemin)); break; case FAKE_SRC_SIZETYPE_EMPTY: default: size = 0; break; } return size; } static GstBuffer * gst_fake_src_create_buffer (GstFakeSrc * src) { GstBuffer *buf; guint size; gboolean dump = src->dump; size = gst_fake_src_get_size (src); if (size == 0) return gst_buffer_new (); switch (src->data) { case FAKE_SRC_DATA_ALLOCATE: buf = gst_fake_src_alloc_buffer (src, size); break; case FAKE_SRC_DATA_SUBBUFFER: /* see if we have a parent to subbuffer */ if (!src->parent) { gst_fake_src_alloc_parent (src); g_assert (src->parent); } /* see if it's large enough */ if ((GST_BUFFER_SIZE (src->parent) - src->parentoffset) >= size) { buf = gst_buffer_create_sub (src->parent, src->parentoffset, size); src->parentoffset += size; } else { /* the parent is useless now */ gst_buffer_unref (src->parent); src->parent = NULL; /* try again (this will allocate a new parent) */ return gst_fake_src_create_buffer (src); } gst_fake_src_prepare_buffer (src, buf); break; default: g_warning ("fakesrc: dunno how to allocate buffers !"); buf = gst_buffer_new (); break; } if (dump) { gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); } return buf; } static void gst_fake_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer, GstClockTime * start, GstClockTime * end) { GstFakeSrc *src; src = GST_FAKE_SRC (basesrc); /* sync on the timestamp of the buffer if requested. */ if (src->sync) { 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 GstFlowReturn gst_fake_src_create (GstBaseSrc * basesrc, guint64 offset, guint length, GstBuffer ** ret) { GstFakeSrc *src; GstBuffer *buf; GstClockTime time; src = GST_FAKE_SRC (basesrc); buf = gst_fake_src_create_buffer (src); GST_BUFFER_OFFSET (buf) = src->buffer_count++; if (src->datarate > 0) { time = (src->bytes_sent * GST_SECOND) / src->datarate; GST_BUFFER_DURATION (buf) = GST_BUFFER_SIZE (buf) * GST_SECOND / src->datarate; } else if (gst_base_src_is_live (basesrc)) { GstClock *clock; clock = gst_element_get_clock (GST_ELEMENT (src)); if (clock) { time = gst_clock_get_time (clock); time -= gst_element_get_base_time (GST_ELEMENT (src)); gst_object_unref (clock); } else { /* not an error not to have a clock */ time = GST_CLOCK_TIME_NONE; } } else { time = GST_CLOCK_TIME_NONE; } GST_BUFFER_TIMESTAMP (buf) = time; if (!src->silent) { gchar ts_str[64], dur_str[64]; GST_OBJECT_LOCK (src); g_free (src->last_message); if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (ts_str, sizeof (ts_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf))); } else { g_strlcpy (ts_str, "none", sizeof (ts_str)); } if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DURATION (buf))); } else { g_strlcpy (dur_str, "none", sizeof (dur_str)); } src->last_message = g_strdup_printf ("get ******* > (%5d bytes, timestamp: %s" ", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %" G_GINT64_FORMAT ", flags: %d) %p", GST_BUFFER_SIZE (buf), ts_str, dur_str, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_MINI_OBJECT (buf)->flags, buf); GST_OBJECT_UNLOCK (src); g_object_notify (G_OBJECT (src), "last_message"); } if (src->signal_handoffs) { GST_LOG_OBJECT (src, "pre handoff emit"); g_signal_emit (G_OBJECT (src), gst_fake_src_signals[SIGNAL_HANDOFF], 0, buf, basesrc->srcpad); GST_LOG_OBJECT (src, "post handoff emit"); } src->bytes_sent += GST_BUFFER_SIZE (buf); *ret = buf; return GST_FLOW_OK; } static gboolean gst_fake_src_start (GstBaseSrc * basesrc) { GstFakeSrc *src; src = GST_FAKE_SRC (basesrc); src->buffer_count = 0; src->pattern_byte = 0x00; src->bytes_sent = 0; return TRUE; } static gboolean gst_fake_src_stop (GstBaseSrc * basesrc) { GstFakeSrc *src; src = GST_FAKE_SRC (basesrc); GST_OBJECT_LOCK (src); if (src->parent) { gst_buffer_unref (src->parent); src->parent = NULL; } g_free (src->last_message); src->last_message = NULL; GST_OBJECT_UNLOCK (src); return TRUE; } static gboolean gst_fake_src_is_seekable (GstBaseSrc * basesrc) { GstFakeSrc *src = GST_FAKE_SRC (basesrc); return src->can_activate_pull; }