/* 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 #include GstElementDetails gst_fakesrc_details = { "Fake Source", "Source", "Push empty (no data) buffers around", VERSION, "Erik Walthinsen \n" "Wim Taymans ", "(C) 1999", }; /* 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_PATTERN, ARG_NUM_BUFFERS, ARG_EOS, ARG_SILENT, ARG_DUMP, ARG_PARENTSIZE }; GST_PADTEMPLATE_FACTORY (fakesrc_src_factory, "src%d", GST_PAD_SRC, GST_PAD_REQUEST, NULL /* no caps */ ); #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, "2", "Allocate data"}, { FAKESRC_DATA_SUBBUFFER, "3", "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; } static void gst_fakesrc_class_init (GstFakeSrcClass *klass); static void gst_fakesrc_init (GstFakeSrc *fakesrc); static GstPad* gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ); static void gst_fakesrc_update_functions (GstFakeSrc *src); 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 GstElementStateReturn gst_fakesrc_change_state (GstElement *element); static GstBuffer* gst_fakesrc_get (GstPad *pad); static void gst_fakesrc_loop (GstElement *element); static GstElementClass *parent_class = NULL; static guint gst_fakesrc_signals[LAST_SIGNAL] = { 0 }; GType gst_fakesrc_get_type (void) { static GType fakesrc_type = 0; if (!fakesrc_type) { static const GTypeInfo fakesrc_info = { sizeof(GstFakeSrcClass), NULL, NULL, (GClassInitFunc)gst_fakesrc_class_init, NULL, NULL, sizeof(GstFakeSrc), 0, (GInstanceInitFunc)gst_fakesrc_init, }; fakesrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstFakeSrc", &fakesrc_info, 0); } return fakesrc_type; } static void gst_fakesrc_class_init (GstFakeSrcClass *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*)klass; gstelement_class = (GstElementClass*)klass; parent_class = g_type_class_ref (GST_TYPE_ELEMENT); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_SOURCES, g_param_spec_int ("num_sources", "num_sources", "num_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","loop_based", FALSE, G_PARAM_READWRITE)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_OUTPUT, g_param_spec_enum("output","output","output", GST_TYPE_FAKESRC_OUTPUT,FAKESRC_FIRST_LAST_LOOP,G_PARAM_READWRITE)); /* CHECKME! */ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DATA, g_param_spec_enum ("data", "data", "data", 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", "sizetype", 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","sizemin", 0, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIZEMAX, g_param_spec_int ("sizemax","sizemax","sizemax", 0, G_MAXINT, 4096, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PARENTSIZE, g_param_spec_int ("parentsize","parentsize","parentsize", 0, G_MAXINT, 4096 * 10, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FILLTYPE, g_param_spec_enum ("filltype", "filltype", "filltype", GST_TYPE_FAKESRC_FILLTYPE, FAKESRC_FILLTYPE_NULL, 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)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NUM_BUFFERS, g_param_spec_int("num_buffers","num_buffers","num_buffers", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_EOS, g_param_spec_boolean("eos","eos","eos", TRUE,G_PARAM_READWRITE)); /* CHECKME */ gst_element_install_std_props ( GST_ELEMENT_CLASS (klass), "silent", ARG_SILENT, G_PARAM_READWRITE, "dump", ARG_DUMP, G_PARAM_READWRITE, NULL); 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, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_fakesrc_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_fakesrc_get_property); gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_fakesrc_request_new_pad); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_fakesrc_change_state); } static void gst_fakesrc_init (GstFakeSrc *fakesrc) { GstPad *pad; /* create our first output pad */ pad = gst_pad_new ("src", GST_PAD_SRC); gst_element_add_pad (GST_ELEMENT (fakesrc), pad); fakesrc->loop_based = FALSE; gst_fakesrc_update_functions (fakesrc); fakesrc->num_buffers = -1; fakesrc->rt_num_buffers = -1; fakesrc->buffer_count = 0; fakesrc->silent = 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 = 0; fakesrc->sizemax = 4096; fakesrc->parent = NULL; fakesrc->parentsize = 4096 * 10; } static GstPad* gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ) { 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); g_free (name); return srcpad; } static gboolean gst_fakesrc_event_handler (GstPad *pad, GstEvent *event) { GstFakeSrc *src; src = GST_FAKESRC (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: src->buffer_count = GST_EVENT_SEEK_OFFSET (event); if (!GST_EVENT_SEEK_FLUSH (event)) { gst_event_free (event); break; } /* else we do a flush too */ case GST_EVENT_FLUSH: src->need_flush = TRUE; break; default: break; } return TRUE; } static void gst_fakesrc_update_functions (GstFakeSrc *src) { GList *pads; if (src->loop_based) { gst_element_set_loop_function (GST_ELEMENT (src), GST_DEBUG_FUNCPTR (gst_fakesrc_loop)); } else { gst_element_set_loop_function (GST_ELEMENT (src), NULL); } pads = GST_ELEMENT (src)->pads; while (pads) { GstPad *pad = GST_PAD (pads->data); if (src->loop_based) { gst_pad_set_get_function (pad, NULL); } else { gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get)); } gst_pad_set_event_function (pad, gst_fakesrc_event_handler); 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: break; case ARG_DATA: src->data = g_value_get_enum (value); switch (src->data) { case FAKESRC_DATA_ALLOCATE: if (src->parent) { gst_buffer_unref (src->parent); src->parent = NULL; } break; case FAKESRC_DATA_SUBBUFFER: if (!src->parent) gst_fakesrc_alloc_parent (src); default: break; } 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_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 (0, "will EOS on next buffer"); break; case ARG_SILENT: src->silent = g_value_get_boolean (value); break; case ARG_DUMP: src->dump = g_value_get_boolean (value); break; default: 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_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_DUMP: g_value_set_boolean (value, src->dump); 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 GstBuffer * gst_fakesrc_get(GstPad *pad) { GstFakeSrc *src; GstBuffer *buf; g_return_val_if_fail (pad != NULL, NULL); src = GST_FAKESRC (gst_pad_get_parent (pad)); g_return_val_if_fail (GST_IS_FAKESRC (src), NULL); if (src->need_flush) { src->need_flush = FALSE; return GST_BUFFER(gst_event_new (GST_EVENT_FLUSH)); } if (src->rt_num_buffers == 0) { gst_element_set_state (GST_ELEMENT (src), GST_STATE_PAUSED); return GST_BUFFER(gst_event_new (GST_EVENT_EOS)); } else { if (src->rt_num_buffers > 0) src->rt_num_buffers--; } if (src->eos) { GST_INFO (0, "fakesrc is setting eos on pad"); return GST_BUFFER(gst_event_new (GST_EVENT_EOS)); } buf = gst_fakesrc_create_buffer (src); GST_BUFFER_TIMESTAMP (buf) = src->buffer_count++; if (!src->silent) { gst_element_info (GST_ELEMENT (src), "get ******* (%s:%s)> (%d bytes, %llu)", GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf)); } GST_DEBUG_ELEMENT (GST_CAT_DATAFLOW, src, "pre handoff emit\n"); g_signal_emit (G_OBJECT (src), gst_fakesrc_signals[SIGNAL_HANDOFF], 0, buf, pad); GST_DEBUG_ELEMENT (GST_CAT_DATAFLOW, src, "post handoff emit\n"); return buf; } /** * gst_fakesrc_loop: * @element: the faksesrc to loop * * generate an empty buffer and push it to the next element. */ static void gst_fakesrc_loop(GstElement *element) { GstFakeSrc *src; GList *pads; g_return_if_fail(element != NULL); g_return_if_fail(GST_IS_FAKESRC(element)); src = GST_FAKESRC (element); pads = gst_element_get_pad_list (element); while (pads) { GstPad *pad = GST_PAD (pads->data); GstBuffer *buf; if (src->rt_num_buffers == 0) { src->eos = TRUE; } else { if (src->rt_num_buffers > 0) src->rt_num_buffers--; } if (src->eos) { gst_pad_push(pad, GST_BUFFER(gst_event_new (GST_EVENT_EOS))); return; } buf = gst_fakesrc_create_buffer (src); GST_BUFFER_TIMESTAMP (buf) = src->buffer_count++; if (!src->silent) { gst_element_info (element, "fakesrc: loop ******* (%s:%s) > (%d bytes, %llu)", GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf)); } g_signal_emit (G_OBJECT (src), gst_fakesrc_signals[SIGNAL_HANDOFF], 0, buf, pad); gst_pad_push (pad, buf); pads = g_list_next (pads); } } static GstElementStateReturn gst_fakesrc_change_state (GstElement *element) { GstFakeSrc *fakesrc; g_return_val_if_fail (GST_IS_FAKESRC (element), GST_STATE_FAILURE); fakesrc = GST_FAKESRC (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_PAUSED_TO_READY: case GST_STATE_NULL_TO_READY: fakesrc->buffer_count = 0; fakesrc->pattern_byte = 0x00; fakesrc->need_flush = FALSE; fakesrc->eos = FALSE; fakesrc->rt_num_buffers = fakesrc->num_buffers; if (fakesrc->parent) { gst_buffer_unref (fakesrc->parent); fakesrc->parent = NULL; } break; case GST_STATE_READY_TO_PAUSED: case GST_STATE_PAUSED_TO_PLAYING: case GST_STATE_PLAYING_TO_PAUSED: case GST_STATE_READY_TO_NULL: break; default: g_assert_not_reached (); break; } if (GST_ELEMENT_CLASS (parent_class)->change_state) return GST_ELEMENT_CLASS (parent_class)->change_state (element); return GST_STATE_SUCCESS; } gboolean gst_fakesrc_factory_init (GstElementFactory *factory) { gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (fakesrc_src_factory)); return TRUE; }