/* 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. */ #include #include #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "gstfakesrc.h" #include #define DEFAULT_SIZEMIN 0 #define DEFAULT_SIZEMAX 4096 #define DEFAULT_PARENTSIZE 4096*10 #define DEFAULT_DATARATE 0 #define DEFAULT_SYNC FALSE static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); GST_DEBUG_CATEGORY_STATIC (gst_fakesrc_debug); #define GST_CAT_DEFAULT gst_fakesrc_debug GstElementDetails gst_fakesrc_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 }; enum { ARG_0, ARG_NUM_SOURCES, ARG_LOOP_BASED, ARG_OUTPUT, ARG_DATA, ARG_SIZETYPE, ARG_SIZEMIN, ARG_SIZEMAX, ARG_FILLTYPE, ARG_DATARATE, ARG_SYNC, ARG_PATTERN, ARG_NUM_BUFFERS, ARG_EOS, ARG_SIGNAL_HANDOFFS, ARG_SILENT, ARG_DUMP, ARG_PARENTSIZE, ARG_LAST_MESSAGE }; GstStaticPadTemplate fakesrc_src_template = GST_STATIC_PAD_TEMPLATE ("src%d", GST_PAD_SRC, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); #define GST_TYPE_FAKESRC_OUTPUT (gst_fakesrc_output_get_type()) static GType gst_fakesrc_output_get_type (void) { static GType fakesrc_output_type = 0; static GEnumValue fakesrc_output[] = { {FAKESRC_FIRST_LAST_LOOP, "1", "First-Last loop"}, {FAKESRC_LAST_FIRST_LOOP, "2", "Last-First loop"}, {FAKESRC_PING_PONG, "3", "Ping-Pong"}, {FAKESRC_ORDERED_RANDOM, "4", "Ordered Random"}, {FAKESRC_RANDOM, "5", "Random"}, {FAKESRC_PATTERN_LOOP, "6", "Patttern loop"}, {FAKESRC_PING_PONG_PATTERN, "7", "Ping-Pong Pattern"}, {FAKESRC_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_FAKESRC_DATA (gst_fakesrc_data_get_type()) static GType gst_fakesrc_data_get_type (void) { static GType fakesrc_data_type = 0; static GEnumValue fakesrc_data[] = { {FAKESRC_DATA_ALLOCATE, "1", "Allocate data"}, {FAKESRC_DATA_SUBBUFFER, "2", "Subbuffer data"}, {0, NULL, NULL}, }; if (!fakesrc_data_type) { fakesrc_data_type = g_enum_register_static ("GstFakeSrcData", fakesrc_data); } return fakesrc_data_type; } #define GST_TYPE_FAKESRC_SIZETYPE (gst_fakesrc_sizetype_get_type()) static GType gst_fakesrc_sizetype_get_type (void) { static GType fakesrc_sizetype_type = 0; static GEnumValue fakesrc_sizetype[] = { {FAKESRC_SIZETYPE_NULL, "1", "Send empty buffers"}, {FAKESRC_SIZETYPE_FIXED, "2", "Fixed size buffers (sizemax sized)"}, {FAKESRC_SIZETYPE_RANDOM, "3", "Random sized buffers (sizemin <= size <= sizemax)"}, {0, NULL, NULL}, }; if (!fakesrc_sizetype_type) { fakesrc_sizetype_type = g_enum_register_static ("GstFakeSrcSizeType", fakesrc_sizetype); } return fakesrc_sizetype_type; } #define GST_TYPE_FAKESRC_FILLTYPE (gst_fakesrc_filltype_get_type()) static GType gst_fakesrc_filltype_get_type (void) { static GType fakesrc_filltype_type = 0; static GEnumValue fakesrc_filltype[] = { {FAKESRC_FILLTYPE_NOTHING, "1", "Leave data as malloced"}, {FAKESRC_FILLTYPE_NULL, "2", "Fill buffers with zeros"}, {FAKESRC_FILLTYPE_RANDOM, "3", "Fill buffers with random crap"}, {FAKESRC_FILLTYPE_PATTERN, "4", "Fill buffers with pattern 0x00 -> 0xff"}, {FAKESRC_FILLTYPE_PATTERN_CONT, "5", "Fill buffers with pattern 0x00 -> 0xff that spans buffers"}, {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_fakesrc_debug, "fakesrc", 0, "fakesrc element"); GST_BOILERPLATE_FULL (GstFakeSrc, gst_fakesrc, GstElement, GST_TYPE_ELEMENT, _do_init); static GstPad *gst_fakesrc_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * unused); static void gst_fakesrc_update_functions (GstFakeSrc * src); static gboolean gst_fakesrc_activate (GstPad * pad, GstActivateMode mode); static void gst_fakesrc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_fakesrc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_fakesrc_set_clock (GstElement * element, GstClock * clock); static GstElementStateReturn gst_fakesrc_change_state (GstElement * element); static void gst_fakesrc_loop (GstPad * pad); static guint gst_fakesrc_signals[LAST_SIGNAL] = { 0 }; static void gst_fakesrc_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_fakesrc_details); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&fakesrc_src_template)); } static void gst_fakesrc_class_init (GstFakeSrcClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_fakesrc_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_fakesrc_get_property); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_SOURCES, g_param_spec_int ("num-sources", "num-sources", "Number of sources", 1, G_MAXINT, 1, G_PARAM_READABLE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOP_BASED, g_param_spec_boolean ("loop-based", "loop-based", "Enable loop-based operation", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_OUTPUT, g_param_spec_enum ("output", "output", "Output method (currently unused)", GST_TYPE_FAKESRC_OUTPUT, FAKESRC_FIRST_LAST_LOOP, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DATA, g_param_spec_enum ("data", "data", "Data allocation method", GST_TYPE_FAKESRC_DATA, FAKESRC_DATA_ALLOCATE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIZETYPE, g_param_spec_enum ("sizetype", "sizetype", "How to determine buffer sizes", GST_TYPE_FAKESRC_SIZETYPE, FAKESRC_SIZETYPE_NULL, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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), ARG_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), ARG_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), ARG_FILLTYPE, g_param_spec_enum ("filltype", "filltype", "How to fill the buffer, if at all", GST_TYPE_FAKESRC_FILLTYPE, FAKESRC_FILLTYPE_NULL, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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), ARG_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), ARG_PATTERN, g_param_spec_string ("pattern", "pattern", "pattern", NULL, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_BUFFERS, g_param_spec_int ("num-buffers", "num-buffers", "Number of buffers to output before sending EOS", -1, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EOS, g_param_spec_boolean ("eos", "eos", "Send out the EOS event?", TRUE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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), ARG_SILENT, g_param_spec_boolean ("silent", "Silent", "Don't produce last_message events", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIGNAL_HANDOFFS, g_param_spec_boolean ("signal-handoffs", "Signal handoffs", "Send a signal before pushing the buffer", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUMP, g_param_spec_boolean ("dump", "Dump", "Dump produced bytes to stdout", FALSE, G_PARAM_READWRITE)); gst_fakesrc_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__BOXED_OBJECT, G_TYPE_NONE, 2, GST_TYPE_BUFFER | G_SIGNAL_TYPE_STATIC_SCOPE, GST_TYPE_PAD); gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_fakesrc_request_new_pad); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_fakesrc_change_state); gstelement_class->set_clock = GST_DEBUG_FUNCPTR (gst_fakesrc_set_clock); } static void gst_fakesrc_init (GstFakeSrc * fakesrc) { GstPad *pad; /* create our first output pad */ pad = gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate), "src"); gst_element_add_pad (GST_ELEMENT (fakesrc), pad); fakesrc->loop_based = FALSE; gst_fakesrc_update_functions (fakesrc); fakesrc->output = FAKESRC_FIRST_LAST_LOOP; fakesrc->segment_start = -1; fakesrc->segment_end = -1; fakesrc->num_buffers = -1; fakesrc->rt_num_buffers = -1; fakesrc->buffer_count = 0; fakesrc->silent = FALSE; fakesrc->signal_handoffs = FALSE; fakesrc->dump = FALSE; fakesrc->pattern_byte = 0x00; fakesrc->need_flush = FALSE; fakesrc->data = FAKESRC_DATA_ALLOCATE; fakesrc->sizetype = FAKESRC_SIZETYPE_NULL; fakesrc->filltype = FAKESRC_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_fakesrc_set_clock (GstElement * element, GstClock * clock) { GstFakeSrc *src; src = GST_FAKESRC (element); src->clock = clock; } static GstPad * gst_fakesrc_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * unused) { gchar *name; GstPad *srcpad; GstFakeSrc *fakesrc; g_return_val_if_fail (GST_IS_FAKESRC (element), NULL); if (templ->direction != GST_PAD_SRC) { g_warning ("gstfakesrc: request new pad that is not a SRC pad\n"); return NULL; } fakesrc = GST_FAKESRC (element); name = g_strdup_printf ("src%d", GST_ELEMENT (fakesrc)->numsrcpads); srcpad = gst_pad_new_from_template (templ, name); gst_element_add_pad (GST_ELEMENT (fakesrc), srcpad); gst_fakesrc_update_functions (fakesrc); g_free (name); return srcpad; } static const GstFormat * gst_fakesrc_get_formats (GstPad * pad) { static const GstFormat formats[] = { GST_FORMAT_DEFAULT, 0, }; return formats; } static const GstQueryType * gst_fakesrc_get_query_types (GstPad * pad) { static const GstQueryType types[] = { GST_QUERY_TOTAL, GST_QUERY_POSITION, GST_QUERY_START, GST_QUERY_SEGMENT_END, 0, }; return types; } static gboolean gst_fakesrc_query (GstPad * pad, GstQueryType type, GstFormat * format, gint64 * value) { GstFakeSrc *src = GST_FAKESRC (GST_PAD_PARENT (pad)); switch (type) { case GST_QUERY_TOTAL: *value = src->num_buffers; break; case GST_QUERY_POSITION: *value = src->buffer_count; break; case GST_QUERY_START: *value = src->segment_start; break; case GST_QUERY_SEGMENT_END: *value = src->segment_end; break; default: return FALSE; } return TRUE; } static const GstEventMask * gst_fakesrc_get_event_mask (GstPad * pad) { static const GstEventMask masks[] = { {GST_EVENT_SEEK, GST_SEEK_FLAG_FLUSH}, {GST_EVENT_SEEK_SEGMENT, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT_LOOP}, {GST_EVENT_FLUSH, 0}, {0, 0}, }; return masks; } static gboolean gst_fakesrc_event_handler (GstPad * pad, GstEvent * event) { GstFakeSrc *src; src = GST_FAKESRC (gst_object_get_parent (GST_OBJECT (pad))); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: src->buffer_count = GST_EVENT_SEEK_OFFSET (event); if (!GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) { break; } /* else we do a flush too */ case GST_EVENT_SEEK_SEGMENT: src->segment_start = GST_EVENT_SEEK_OFFSET (event); src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event); src->buffer_count = src->segment_start; src->segment_loop = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP; break; case GST_EVENT_FLUSH: src->need_flush = TRUE; break; default: break; } gst_event_unref (event); return TRUE; } static void gst_fakesrc_update_functions (GstFakeSrc * src) { GList *pads; pads = GST_ELEMENT (src)->pads; while (pads) { GstPad *pad = GST_PAD (pads->data); gst_pad_set_activate_function (pad, gst_fakesrc_activate); gst_pad_set_loop_function (pad, gst_fakesrc_loop); gst_pad_set_event_function (pad, gst_fakesrc_event_handler); gst_pad_set_event_mask_function (pad, gst_fakesrc_get_event_mask); gst_pad_set_query_function (pad, gst_fakesrc_query); gst_pad_set_query_type_function (pad, gst_fakesrc_get_query_types); gst_pad_set_formats_function (pad, gst_fakesrc_get_formats); pads = g_list_next (pads); } } static void gst_fakesrc_alloc_parent (GstFakeSrc * src) { GstBuffer *buf; buf = gst_buffer_new (); GST_BUFFER_DATA (buf) = g_malloc (src->parentsize); GST_BUFFER_SIZE (buf) = src->parentsize; src->parent = buf; src->parentoffset = 0; } static void gst_fakesrc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstFakeSrc *src; /* it's not null if we got it, but it might not be ours */ src = GST_FAKESRC (object); switch (prop_id) { case ARG_LOOP_BASED: src->loop_based = g_value_get_boolean (value); gst_fakesrc_update_functions (src); break; case ARG_OUTPUT: g_warning ("not yet implemented"); break; case ARG_DATA: src->data = g_value_get_enum (value); if (src->data == FAKESRC_DATA_SUBBUFFER) { if (!src->parent) gst_fakesrc_alloc_parent (src); } else { if (src->parent) { gst_buffer_unref (src->parent); src->parent = NULL; } } break; case ARG_SIZETYPE: src->sizetype = g_value_get_enum (value); break; case ARG_SIZEMIN: src->sizemin = g_value_get_int (value); break; case ARG_SIZEMAX: src->sizemax = g_value_get_int (value); break; case ARG_PARENTSIZE: src->parentsize = g_value_get_int (value); break; case ARG_FILLTYPE: src->filltype = g_value_get_enum (value); break; case ARG_DATARATE: src->datarate = g_value_get_int (value); break; case ARG_SYNC: src->sync = g_value_get_boolean (value); break; case ARG_PATTERN: break; case ARG_NUM_BUFFERS: src->num_buffers = g_value_get_int (value); break; case ARG_EOS: src->eos = g_value_get_boolean (value); GST_INFO ("will EOS on next buffer"); break; case ARG_SILENT: src->silent = g_value_get_boolean (value); break; case ARG_SIGNAL_HANDOFFS: src->signal_handoffs = g_value_get_boolean (value); break; case ARG_DUMP: src->dump = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_fakesrc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstFakeSrc *src; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_FAKESRC (object)); src = GST_FAKESRC (object); switch (prop_id) { case ARG_NUM_SOURCES: g_value_set_int (value, GST_ELEMENT (src)->numsrcpads); break; case ARG_LOOP_BASED: g_value_set_boolean (value, src->loop_based); break; case ARG_OUTPUT: g_value_set_enum (value, src->output); break; case ARG_DATA: g_value_set_enum (value, src->data); break; case ARG_SIZETYPE: g_value_set_enum (value, src->sizetype); break; case ARG_SIZEMIN: g_value_set_int (value, src->sizemin); break; case ARG_SIZEMAX: g_value_set_int (value, src->sizemax); break; case ARG_PARENTSIZE: g_value_set_int (value, src->parentsize); break; case ARG_FILLTYPE: g_value_set_enum (value, src->filltype); break; case ARG_DATARATE: g_value_set_int (value, src->datarate); break; case ARG_SYNC: g_value_set_boolean (value, src->sync); break; case ARG_PATTERN: g_value_set_string (value, src->pattern); break; case ARG_NUM_BUFFERS: g_value_set_int (value, src->num_buffers); break; case ARG_EOS: g_value_set_boolean (value, src->eos); break; case ARG_SILENT: g_value_set_boolean (value, src->silent); break; case ARG_SIGNAL_HANDOFFS: g_value_set_boolean (value, src->signal_handoffs); break; case ARG_DUMP: g_value_set_boolean (value, src->dump); break; case ARG_LAST_MESSAGE: g_value_set_string (value, src->last_message); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_fakesrc_prepare_buffer (GstFakeSrc * src, GstBuffer * buf) { if (GST_BUFFER_SIZE (buf) == 0) return; switch (src->filltype) { case FAKESRC_FILLTYPE_NULL: memset (GST_BUFFER_DATA (buf), 0, GST_BUFFER_SIZE (buf)); break; case FAKESRC_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 FAKESRC_FILLTYPE_PATTERN: src->pattern_byte = 0x00; case FAKESRC_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 FAKESRC_FILLTYPE_NOTHING: default: break; } } static GstBuffer * gst_fakesrc_alloc_buffer (GstFakeSrc * src, guint size) { GstBuffer *buf; buf = gst_buffer_new (); GST_BUFFER_SIZE (buf) = size; if (size != 0) { switch (src->filltype) { case FAKESRC_FILLTYPE_NOTHING: GST_BUFFER_DATA (buf) = g_malloc (size); break; case FAKESRC_FILLTYPE_NULL: GST_BUFFER_DATA (buf) = g_malloc0 (size); break; case FAKESRC_FILLTYPE_RANDOM: case FAKESRC_FILLTYPE_PATTERN: case FAKESRC_FILLTYPE_PATTERN_CONT: default: GST_BUFFER_DATA (buf) = g_malloc (size); gst_fakesrc_prepare_buffer (src, buf); break; } } return buf; } static guint gst_fakesrc_get_size (GstFakeSrc * src) { guint size; switch (src->sizetype) { case FAKESRC_SIZETYPE_FIXED: size = src->sizemax; break; case FAKESRC_SIZETYPE_RANDOM: size = src->sizemin + (guint8) (((gfloat) src->sizemax) * rand () / (RAND_MAX + (gfloat) src->sizemin)); break; case FAKESRC_SIZETYPE_NULL: default: size = 0; break; } return size; } static GstBuffer * gst_fakesrc_create_buffer (GstFakeSrc * src) { GstBuffer *buf; guint size; gboolean dump = src->dump; size = gst_fakesrc_get_size (src); if (size == 0) return gst_buffer_new (); switch (src->data) { case FAKESRC_DATA_ALLOCATE: buf = gst_fakesrc_alloc_buffer (src, size); break; case FAKESRC_DATA_SUBBUFFER: /* see if we have a parent to subbuffer */ if (!src->parent) { gst_fakesrc_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_fakesrc_create_buffer (src); } gst_fakesrc_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_fakesrc_loop (GstPad * pad) { GstFakeSrc *src; GstBuffer *buf; GstClockTime time; src = GST_FAKESRC (GST_OBJECT_PARENT (pad)); GST_STREAM_LOCK (pad); if (src->need_flush) { src->need_flush = FALSE; gst_pad_push_event (pad, gst_event_new (GST_EVENT_FLUSH)); } if (src->buffer_count == src->segment_end) { if (src->segment_loop) { gst_pad_push_event (pad, gst_event_new (GST_EVENT_SEGMENT_DONE)); } else { gst_pad_push_event (pad, gst_event_new (GST_EVENT_EOS)); gst_task_pause (src->task); goto done; } } if (src->rt_num_buffers == 0) { gst_pad_push_event (pad, gst_event_new (GST_EVENT_EOS)); gst_task_pause (src->task); goto done; } else { if (src->rt_num_buffers > 0) src->rt_num_buffers--; } if (src->eos) { GST_INFO ("fakesrc is setting eos on pad"); gst_pad_push_event (pad, gst_event_new (GST_EVENT_EOS)); gst_task_pause (src->task); goto done; } buf = gst_fakesrc_create_buffer (src); GST_BUFFER_OFFSET (buf) = src->buffer_count++; time = GST_CLOCK_TIME_NONE; if (src->datarate > 0) { time = (src->bytes_sent * GST_SECOND) / src->datarate; if (src->sync) { gst_element_wait (GST_ELEMENT (src), time); } GST_BUFFER_DURATION (buf) = GST_BUFFER_SIZE (buf) * GST_SECOND / src->datarate; } GST_BUFFER_TIMESTAMP (buf) = time; if (!src->silent) { g_free (src->last_message); src->last_message = g_strdup_printf ("get ******* (%s:%s)> (%d bytes, %" G_GUINT64_FORMAT " ) %p", GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf), buf); 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_fakesrc_signals[SIGNAL_HANDOFF], 0, buf, pad); GST_LOG_OBJECT (src, "post handoff emit"); } src->bytes_sent += GST_BUFFER_SIZE (buf); gst_pad_push (pad, buf); done: GST_STREAM_UNLOCK (pad); } #if 0 /** * gst_fakesrc_loop: * @element: the faksesrc to loop * * generate an empty buffer and push it to the next element. */ static gboolean gst_fakesrc_loop (GstPad * pad) { GstFakeSrc *src; const GList *pads; GstTask *task; src = GST_FAKESRC (GST_PAD_PARENT (pad)); task = src->task; pads = GST_ELEMENT (src)->pads; while (pads) { GstPad *pad = GST_PAD (pads->data); GstBuffer *buffer; GstFlowReturn ret; ret = gst_fakesrc_get (pad, &buffer); if (ret != GST_FLOW_OK) { return FALSE; } ret = gst_pad_push (pad, buffer); if (ret != GST_FLOW_OK) { return FALSE; } if (src->eos) { return FALSE; } pads = g_list_next (pads); } return TRUE; } #endif static gboolean gst_fakesrc_activate (GstPad * pad, GstActivateMode mode) { gboolean result = FALSE; GstFakeSrc *fakesrc; fakesrc = GST_FAKESRC (GST_OBJECT_PARENT (pad)); switch (mode) { case GST_ACTIVATE_PUSH: /* if we have a scheduler we can start the task */ if (GST_ELEMENT_SCHEDULER (fakesrc)) { GST_STREAM_LOCK (pad); fakesrc->task = gst_scheduler_create_task (GST_ELEMENT_SCHEDULER (fakesrc), (GstTaskFunction) gst_fakesrc_loop, pad); gst_task_start (fakesrc->task); GST_STREAM_UNLOCK (pad); result = TRUE; } break; case GST_ACTIVATE_PULL: break; case GST_ACTIVATE_NONE: /* step 1, unblock clock sync (if any) */ /* step 2, make sure streaming finishes */ GST_STREAM_LOCK (pad); /* step 3, stop the task */ gst_task_stop (fakesrc->task); gst_object_unref (GST_OBJECT (fakesrc->task)); GST_STREAM_UNLOCK (pad); result = TRUE; break; } return result; } static GstElementStateReturn gst_fakesrc_change_state (GstElement * element) { GstFakeSrc *fakesrc; GstElementStateReturn result = GST_STATE_FAILURE; g_return_val_if_fail (GST_IS_FAKESRC (element), result); fakesrc = GST_FAKESRC (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_NULL_TO_READY: break; case GST_STATE_READY_TO_PAUSED: { fakesrc->buffer_count = 0; fakesrc->pattern_byte = 0x00; fakesrc->need_flush = FALSE; fakesrc->eos = FALSE; fakesrc->bytes_sent = 0; fakesrc->rt_num_buffers = fakesrc->num_buffers; break; } case GST_STATE_PAUSED_TO_PLAYING: break; } result = GST_ELEMENT_CLASS (parent_class)->change_state (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_PLAYING_TO_PAUSED: break; case GST_STATE_PAUSED_TO_READY: if (fakesrc->parent) { gst_buffer_unref (fakesrc->parent); fakesrc->parent = NULL; } g_free (fakesrc->last_message); fakesrc->last_message = NULL; break; case GST_STATE_READY_TO_NULL: break; default: break; } return result; }