/* * dvbbasebin.c - * Copyright (C) 2007 Alessandro Decina * * Authors: * Alessandro Decina * * 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include "dvbbasebin.h" #include "parsechannels.h" GST_DEBUG_CATEGORY (dvb_base_bin_debug); #define GST_CAT_DEFAULT dvb_base_bin_debug static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ") ); static GstStaticPadTemplate program_template = GST_STATIC_PAD_TEMPLATE ("program_%u", GST_PAD_SRC, GST_PAD_REQUEST, GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ") ); enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, PROP_ADAPTER, PROP_FRONTEND, PROP_DISEQC_SRC, PROP_FREQUENCY, PROP_POLARITY, PROP_SYMBOL_RATE, PROP_BANDWIDTH, PROP_CODE_RATE_HP, PROP_CODE_RATE_LP, PROP_GUARD, PROP_MODULATION, PROP_TRANS_MODE, PROP_HIERARCHY, PROP_INVERSION, PROP_PROGRAM_NUMBERS, PROP_STATS_REPORTING_INTERVAL, PROP_DELSYS, PROP_PILOT, PROP_ROLLOFF, PROP_STREAM_ID /* FILL ME */ }; typedef struct { guint16 pid; guint usecount; } DvbBaseBinStream; typedef struct { gint program_number; guint16 pmt_pid; guint16 pcr_pid; GstMpegTsSection *section; GstMpegTsSection *old_section; const GstMpegTsPMT *pmt; const GstMpegTsPMT *old_pmt; gboolean selected; gboolean pmt_active; gboolean active; GstPad *ghost; } DvbBaseBinProgram; static void dvb_base_bin_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void dvb_base_bin_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void dvb_base_bin_dispose (GObject * object); static void dvb_base_bin_finalize (GObject * object); static void dvb_base_bin_task (DvbBaseBin * basebin); static GstStateChangeReturn dvb_base_bin_change_state (GstElement * element, GstStateChange transition); static void dvb_base_bin_handle_message (GstBin * bin, GstMessage * message); static void dvb_base_bin_pat_info_cb (DvbBaseBin * dvbbasebin, GstMpegTsSection * pat); static void dvb_base_bin_pmt_info_cb (DvbBaseBin * dvbbasebin, GstMpegTsSection * pmt); static GstPad *dvb_base_bin_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps); static void dvb_base_bin_release_pad (GstElement * element, GstPad * pad); static void dvb_base_bin_rebuild_filter (DvbBaseBin * dvbbasebin); static void dvb_base_bin_deactivate_program (DvbBaseBin * dvbbasebin, DvbBaseBinProgram * program); static void dvb_base_bin_uri_handler_init (gpointer g_iface, gpointer iface_data); static void dvb_base_bin_program_destroy (gpointer data); #define dvb_base_bin_parent_class parent_class G_DEFINE_TYPE_EXTENDED (DvbBaseBin, dvb_base_bin, GST_TYPE_BIN, 0, G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, dvb_base_bin_uri_handler_init)); static DvbBaseBinStream * dvb_base_bin_add_stream (DvbBaseBin * dvbbasebin, guint16 pid) { DvbBaseBinStream *stream; stream = g_new0 (DvbBaseBinStream, 1); stream->pid = pid; stream->usecount = 0; g_hash_table_insert (dvbbasebin->streams, GINT_TO_POINTER ((gint) pid), stream); return stream; } static DvbBaseBinStream * dvb_base_bin_get_stream (DvbBaseBin * dvbbasebin, guint16 pid) { return (DvbBaseBinStream *) g_hash_table_lookup (dvbbasebin->streams, GINT_TO_POINTER ((gint) pid)); } static DvbBaseBinProgram * dvb_base_bin_add_program (DvbBaseBin * dvbbasebin, gint program_number) { DvbBaseBinProgram *program; program = g_new0 (DvbBaseBinProgram, 1); program->program_number = program_number; program->selected = FALSE; program->active = FALSE; program->pmt_pid = G_MAXUINT16; program->pcr_pid = G_MAXUINT16; program->pmt = NULL; program->old_pmt = NULL; g_hash_table_insert (dvbbasebin->programs, GINT_TO_POINTER (program_number), program); return program; } static DvbBaseBinProgram * dvb_base_bin_get_program (DvbBaseBin * dvbbasebin, gint program_number) { return (DvbBaseBinProgram *) g_hash_table_lookup (dvbbasebin->programs, GINT_TO_POINTER (program_number)); } /* static guint signals [LAST_SIGNAL] = { 0 }; */ static void dvb_base_bin_class_init (DvbBaseBinClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; GstBinClass *bin_class; GstElementFactory *dvbsrc_factory; GObjectClass *dvbsrc_class; typedef struct { guint prop_id; const gchar *prop_name; } ProxyedProperty; ProxyedProperty *walk; ProxyedProperty proxyed_properties[] = { {PROP_ADAPTER, "adapter"}, {PROP_FRONTEND, "frontend"}, {PROP_DISEQC_SRC, "diseqc-source"}, {PROP_FREQUENCY, "frequency"}, {PROP_POLARITY, "polarity"}, {PROP_SYMBOL_RATE, "symbol-rate"}, {PROP_BANDWIDTH, "bandwidth"}, {PROP_CODE_RATE_HP, "code-rate-hp"}, {PROP_CODE_RATE_LP, "code-rate-lp"}, {PROP_GUARD, "guard"}, {PROP_MODULATION, "modulation"}, {PROP_TRANS_MODE, "trans-mode"}, {PROP_HIERARCHY, "hierarchy"}, {PROP_INVERSION, "inversion"}, {PROP_STATS_REPORTING_INTERVAL, "stats-reporting-interval"}, {PROP_DELSYS, "delsys"}, {PROP_PILOT, "pilot"}, {PROP_ROLLOFF, "rolloff"}, {PROP_STREAM_ID, "stream-id"}, {0, NULL} }; bin_class = GST_BIN_CLASS (klass); bin_class->handle_message = dvb_base_bin_handle_message; element_class = GST_ELEMENT_CLASS (klass); element_class->change_state = dvb_base_bin_change_state; element_class->request_new_pad = dvb_base_bin_request_new_pad; element_class->release_pad = dvb_base_bin_release_pad; gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&program_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_template)); gst_element_class_set_static_metadata (element_class, "DVB bin", "Source/Bin/Video", "Access descramble and split DVB streams", "Alessandro Decina "); gobject_class = G_OBJECT_CLASS (klass); gobject_class->set_property = dvb_base_bin_set_property; gobject_class->get_property = dvb_base_bin_get_property; gobject_class->dispose = dvb_base_bin_dispose; gobject_class->finalize = dvb_base_bin_finalize; /* install dvbsrc properties */ dvbsrc_factory = gst_element_factory_find ("dvbsrc"); dvbsrc_class = g_type_class_ref (gst_element_factory_get_element_type (dvbsrc_factory)); walk = proxyed_properties; while (walk->prop_name != NULL) { GParamSpec *pspec; GParamSpec *our_pspec; pspec = g_object_class_find_property (dvbsrc_class, walk->prop_name); if (pspec != NULL) { GType param_type = G_PARAM_SPEC_TYPE (pspec); if (param_type == G_TYPE_PARAM_INT) { GParamSpecInt *src_pspec = G_PARAM_SPEC_INT (pspec); our_pspec = g_param_spec_int (g_param_spec_get_name (pspec), g_param_spec_get_nick (pspec), g_param_spec_get_blurb (pspec), src_pspec->minimum, src_pspec->maximum, src_pspec->default_value, pspec->flags); } else if (param_type == G_TYPE_PARAM_UINT) { GParamSpecUInt *src_pspec = G_PARAM_SPEC_UINT (pspec); our_pspec = g_param_spec_uint (g_param_spec_get_name (pspec), g_param_spec_get_nick (pspec), g_param_spec_get_blurb (pspec), src_pspec->minimum, src_pspec->maximum, src_pspec->default_value, pspec->flags); } else if (param_type == G_TYPE_PARAM_STRING) { GParamSpecString *src_pspec = G_PARAM_SPEC_STRING (pspec); our_pspec = g_param_spec_string (g_param_spec_get_name (pspec), g_param_spec_get_nick (pspec), g_param_spec_get_blurb (pspec), src_pspec->default_value, pspec->flags); } else if (param_type == G_TYPE_PARAM_ENUM) { GParamSpecEnum *src_pspec = G_PARAM_SPEC_ENUM (pspec); our_pspec = g_param_spec_enum (g_param_spec_get_name (pspec), g_param_spec_get_nick (pspec), g_param_spec_get_blurb (pspec), pspec->value_type, src_pspec->default_value, pspec->flags); } else { GST_ERROR ("Unsupported property type %s for property %s", g_type_name (param_type), g_param_spec_get_name (pspec)); ++walk; continue; } g_object_class_install_property (gobject_class, walk->prop_id, our_pspec); } else { g_warning ("dvbsrc has no property named %s", walk->prop_name); } ++walk; } g_type_class_unref (dvbsrc_class); g_object_class_install_property (gobject_class, PROP_PROGRAM_NUMBERS, g_param_spec_string ("program-numbers", "Program Numbers", "Colon separated list of programs", "", G_PARAM_READWRITE)); } static void dvb_base_bin_reset (DvbBaseBin * dvbbasebin) { if (dvbbasebin->hwcam) { cam_device_close (dvbbasebin->hwcam); cam_device_free (dvbbasebin->hwcam); dvbbasebin->hwcam = NULL; } dvbbasebin->trycam = TRUE; } static gint16 initial_pids[] = { 0, 1, 0x10, 0x11, 0x12, 0x14, -1 }; static void dvb_base_bin_init (DvbBaseBin * dvbbasebin) { DvbBaseBinStream *stream; GstPad *ghost, *pad; int i; dvbbasebin->dvbsrc = gst_element_factory_make ("dvbsrc", NULL); dvbbasebin->buffer_queue = gst_element_factory_make ("queue", NULL); dvbbasebin->tsparse = gst_element_factory_make ("tsparse", NULL); g_object_set (dvbbasebin->buffer_queue, "max-size-buffers", 0, "max-size-bytes", 0, "max-size-time", 0, NULL); gst_bin_add_many (GST_BIN (dvbbasebin), dvbbasebin->dvbsrc, dvbbasebin->buffer_queue, dvbbasebin->tsparse, NULL); gst_element_link_many (dvbbasebin->dvbsrc, dvbbasebin->buffer_queue, dvbbasebin->tsparse, NULL); /* Expose tsparse source pad */ pad = gst_element_get_static_pad (dvbbasebin->tsparse, "src"); ghost = gst_ghost_pad_new ("src", pad); gst_element_add_pad (GST_ELEMENT (dvbbasebin), ghost); dvbbasebin->programs = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, dvb_base_bin_program_destroy); dvbbasebin->streams = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free); dvbbasebin->pmtlist = NULL; dvbbasebin->pmtlist_changed = FALSE; dvbbasebin->disposed = FALSE; dvb_base_bin_reset (dvbbasebin); /* add PAT, CAT, NIT, SDT, EIT, TDT to pids filter for dvbsrc */ i = 0; while (initial_pids[i] >= 0) { stream = dvb_base_bin_add_stream (dvbbasebin, (guint16) initial_pids[i]); ++stream->usecount; i++; } dvb_base_bin_rebuild_filter (dvbbasebin); g_rec_mutex_init (&dvbbasebin->lock); dvbbasebin->task = gst_task_new ((GstTaskFunction) dvb_base_bin_task, dvbbasebin, NULL); gst_task_set_lock (dvbbasebin->task, &dvbbasebin->lock); dvbbasebin->poll = gst_poll_new_timer (); } static void dvb_base_bin_dispose (GObject * object) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (object); if (!dvbbasebin->disposed) { /* remove mpegtsparse BEFORE dvbsrc, since the mpegtsparse::pad-removed * signal handler uses dvbsrc */ dvb_base_bin_reset (dvbbasebin); gst_bin_remove (GST_BIN (dvbbasebin), dvbbasebin->tsparse); gst_bin_remove (GST_BIN (dvbbasebin), dvbbasebin->dvbsrc); gst_bin_remove (GST_BIN (dvbbasebin), dvbbasebin->buffer_queue); dvbbasebin->disposed = TRUE; } if (G_OBJECT_CLASS (parent_class)->dispose) G_OBJECT_CLASS (parent_class)->dispose (object); } static void dvb_base_bin_finalize (GObject * object) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (object); g_hash_table_destroy (dvbbasebin->streams); g_hash_table_destroy (dvbbasebin->programs); g_list_free (dvbbasebin->pmtlist); if (G_OBJECT_CLASS (parent_class)->finalize) G_OBJECT_CLASS (parent_class)->finalize (object); } static void dvb_base_bin_set_program_numbers (DvbBaseBin * dvbbasebin, const gchar * pn) { gchar **strv, **walk; DvbBaseBinProgram *program; /* Split up and update programs */ strv = g_strsplit (pn, ":", 0); for (walk = strv; *walk; walk++) { gint program_number = strtol (*walk, NULL, 0); program = dvb_base_bin_get_program (dvbbasebin, program_number); if (program == NULL) { program = dvb_base_bin_add_program (dvbbasebin, program_number); program->selected = TRUE; } } g_strfreev (strv); /* FIXME : Deactivate programs no longer selected */ if (dvbbasebin->program_numbers) g_free (dvbbasebin->program_numbers); dvbbasebin->program_numbers = g_strdup (pn); if (0) dvb_base_bin_deactivate_program (dvbbasebin, NULL); } static void dvb_base_bin_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (object); switch (prop_id) { case PROP_ADAPTER: case PROP_DISEQC_SRC: case PROP_FRONTEND: case PROP_FREQUENCY: case PROP_POLARITY: case PROP_SYMBOL_RATE: case PROP_BANDWIDTH: case PROP_CODE_RATE_HP: case PROP_CODE_RATE_LP: case PROP_GUARD: case PROP_MODULATION: case PROP_TRANS_MODE: case PROP_HIERARCHY: case PROP_INVERSION: case PROP_STATS_REPORTING_INTERVAL: case PROP_DELSYS: case PROP_PILOT: case PROP_ROLLOFF: case PROP_STREAM_ID: /* FIXME: check if we can tune (state < PLAYING || program-numbers == "") */ g_object_set_property (G_OBJECT (dvbbasebin->dvbsrc), pspec->name, value); break; case PROP_PROGRAM_NUMBERS: dvb_base_bin_set_program_numbers (dvbbasebin, g_value_get_string (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void dvb_base_bin_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (object); switch (prop_id) { case PROP_ADAPTER: case PROP_FRONTEND: case PROP_DISEQC_SRC: case PROP_FREQUENCY: case PROP_POLARITY: case PROP_SYMBOL_RATE: case PROP_BANDWIDTH: case PROP_CODE_RATE_HP: case PROP_CODE_RATE_LP: case PROP_GUARD: case PROP_MODULATION: case PROP_TRANS_MODE: case PROP_HIERARCHY: case PROP_INVERSION: case PROP_STATS_REPORTING_INTERVAL: case PROP_DELSYS: case PROP_PILOT: case PROP_ROLLOFF: case PROP_STREAM_ID: g_object_get_property (G_OBJECT (dvbbasebin->dvbsrc), pspec->name, value); break; case PROP_PROGRAM_NUMBERS: g_value_set_string (value, dvbbasebin->program_numbers); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static GstPad * dvb_base_bin_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps) { GstPad *pad; GstPad *ghost; gchar *pad_name; GST_DEBUG ("New pad requested %s", name); if (name == NULL) name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ); pad = gst_element_get_request_pad (GST_DVB_BASE_BIN (element)->tsparse, name); if (pad == NULL) return NULL; pad_name = gst_pad_get_name (pad); ghost = gst_ghost_pad_new (pad_name, pad); g_free (pad_name); gst_element_add_pad (element, ghost); return ghost; } static void dvb_base_bin_release_pad (GstElement * element, GstPad * pad) { GstGhostPad *ghost; GstPad *target; g_return_if_fail (GST_IS_DVB_BASE_BIN (element)); ghost = GST_GHOST_PAD (pad); target = gst_ghost_pad_get_target (ghost); gst_element_release_request_pad (GST_ELEMENT (GST_DVB_BASE_BIN (element)->tsparse), target); gst_object_unref (target); gst_element_remove_pad (element, pad); } static void dvb_base_bin_reset_pmtlist (DvbBaseBin * dvbbasebin) { CamConditionalAccessPmtFlag flag; GList *walk; GstMpegTsPMT *pmt; walk = dvbbasebin->pmtlist; while (walk) { if (walk->prev == NULL) { if (walk->next == NULL) flag = CAM_CONDITIONAL_ACCESS_PMT_FLAG_ONLY; else flag = CAM_CONDITIONAL_ACCESS_PMT_FLAG_FIRST; } else { if (walk->next == NULL) flag = CAM_CONDITIONAL_ACCESS_PMT_FLAG_LAST; else flag = CAM_CONDITIONAL_ACCESS_PMT_FLAG_MORE; } pmt = (GstMpegTsPMT *) walk->data; cam_device_set_pmt (dvbbasebin->hwcam, pmt, flag); walk = walk->next; } dvbbasebin->pmtlist_changed = FALSE; } static void dvb_base_bin_init_cam (DvbBaseBin * dvbbasebin) { gint adapter; gchar *ca_file; g_object_get (dvbbasebin->dvbsrc, "adapter", &adapter, NULL); /* TODO: handle multiple cams */ ca_file = g_strdup_printf ("/dev/dvb/adapter%d/ca0", adapter); if (g_file_test (ca_file, G_FILE_TEST_EXISTS)) { dvbbasebin->hwcam = cam_device_new (); /* device_open() can block up to 5s ! */ if (!cam_device_open (dvbbasebin->hwcam, ca_file)) { GST_ERROR_OBJECT (dvbbasebin, "could not open %s", ca_file); cam_device_free (dvbbasebin->hwcam); dvbbasebin->hwcam = NULL; } } dvbbasebin->trycam = FALSE; g_free (ca_file); } static GstStateChangeReturn dvb_base_bin_change_state (GstElement * element, GstStateChange transition) { DvbBaseBin *dvbbasebin; GstStateChangeReturn ret; dvbbasebin = GST_DVB_BASE_BIN (element); ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: gst_poll_set_flushing (dvbbasebin->poll, FALSE); g_rec_mutex_lock (&dvbbasebin->lock); gst_task_start (dvbbasebin->task); g_rec_mutex_unlock (&dvbbasebin->lock); break; case GST_STATE_CHANGE_PAUSED_TO_READY: gst_poll_set_flushing (dvbbasebin->poll, TRUE); g_rec_mutex_lock (&dvbbasebin->lock); gst_task_stop (dvbbasebin->task); g_rec_mutex_unlock (&dvbbasebin->lock); dvb_base_bin_reset (dvbbasebin); break; default: break; } return ret; } static void foreach_stream_build_filter (gpointer key, gpointer value, gpointer user_data) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (user_data); DvbBaseBinStream *stream = (DvbBaseBinStream *) value; gchar *tmp, *pid; g_assert (stream->usecount >= 0); GST_DEBUG ("stream %d usecount %d", stream->pid, stream->usecount); if (stream->usecount > 0) { /* TODO: use g_strjoinv FTW */ tmp = dvbbasebin->filter; pid = g_strdup_printf ("%d", stream->pid); dvbbasebin->filter = g_strjoin (":", pid, dvbbasebin->filter, NULL); g_free (pid); g_free (tmp); } } static void dvb_base_bin_rebuild_filter (DvbBaseBin * dvbbasebin) { g_hash_table_foreach (dvbbasebin->streams, foreach_stream_build_filter, dvbbasebin); if (dvbbasebin->filter == NULL) /* fix dvbsrc to handle NULL filter */ dvbbasebin->filter = g_strdup (""); GST_INFO_OBJECT (dvbbasebin, "rebuilt filter %s", dvbbasebin->filter); /* FIXME: find a way to not add unwanted pids controlled by app */ g_object_set (dvbbasebin->dvbsrc, "pids", dvbbasebin->filter, NULL); g_free (dvbbasebin->filter); dvbbasebin->filter = NULL; } static void dvb_base_bin_remove_pmt_streams (DvbBaseBin * dvbbasebin, const GstMpegTsPMT * pmt) { gint i; DvbBaseBinStream *stream; for (i = 0; i < pmt->streams->len; i++) { GstMpegTsPMTStream *pmtstream = g_ptr_array_index (pmt->streams, i); stream = dvb_base_bin_get_stream (dvbbasebin, pmtstream->pid); if (stream == NULL) { GST_WARNING_OBJECT (dvbbasebin, "removing unknown stream %d ??", pmtstream->pid); continue; } --stream->usecount; } } static void dvb_base_bin_add_pmt_streams (DvbBaseBin * dvbbasebin, const GstMpegTsPMT * pmt) { DvbBaseBinStream *stream; gint i; for (i = 0; i < pmt->streams->len; i++) { GstMpegTsPMTStream *pmtstream = g_ptr_array_index (pmt->streams, i); GST_DEBUG ("filtering stream %d stream_type %d", pmtstream->pid, pmtstream->stream_type); stream = dvb_base_bin_get_stream (dvbbasebin, pmtstream->pid); if (stream == NULL) stream = dvb_base_bin_add_stream (dvbbasebin, pmtstream->pid); ++stream->usecount; } } static void dvb_base_bin_activate_program (DvbBaseBin * dvbbasebin, DvbBaseBinProgram * program) { DvbBaseBinStream *stream; if (program->old_pmt) { dvb_base_bin_remove_pmt_streams (dvbbasebin, program->old_pmt); dvbbasebin->pmtlist = g_list_remove (dvbbasebin->pmtlist, program->old_pmt); } /* activate the PMT and PCR streams. If the PCR stream is in the PMT its * usecount will be incremented by 2 here and decremented by 2 when the * program is deactivated */ if (!program->pmt_active) { stream = dvb_base_bin_get_stream (dvbbasebin, program->pmt_pid); if (stream == NULL) stream = dvb_base_bin_add_stream (dvbbasebin, program->pmt_pid); stream->usecount += 1; program->pmt_active = TRUE; } if (program->pmt) { guint16 old_pcr_pid; old_pcr_pid = program->pcr_pid; program->pcr_pid = program->pmt->pcr_pid; if (old_pcr_pid != G_MAXUINT16 && old_pcr_pid != program->pcr_pid) dvb_base_bin_get_stream (dvbbasebin, old_pcr_pid)->usecount--; stream = dvb_base_bin_get_stream (dvbbasebin, program->pcr_pid); if (stream == NULL) stream = dvb_base_bin_add_stream (dvbbasebin, program->pcr_pid); stream->usecount += 1; dvb_base_bin_add_pmt_streams (dvbbasebin, program->pmt); dvbbasebin->pmtlist = g_list_append (dvbbasebin->pmtlist, (gpointer) program->pmt); dvbbasebin->pmtlist_changed = TRUE; program->active = TRUE; } dvb_base_bin_rebuild_filter (dvbbasebin); } static void dvb_base_bin_deactivate_program (DvbBaseBin * dvbbasebin, DvbBaseBinProgram * program) { DvbBaseBinStream *stream; stream = dvb_base_bin_get_stream (dvbbasebin, program->pmt_pid); if (stream != NULL) stream->usecount -= 1; stream = dvb_base_bin_get_stream (dvbbasebin, program->pcr_pid); if (stream != NULL) stream->usecount -= 1; if (program->pmt) { dvb_base_bin_remove_pmt_streams (dvbbasebin, program->pmt); dvbbasebin->pmtlist = g_list_remove (dvbbasebin->pmtlist, program->pmt); dvbbasebin->pmtlist_changed = TRUE; } dvb_base_bin_rebuild_filter (dvbbasebin); program->pmt_active = FALSE; program->active = FALSE; } static void dvb_base_bin_handle_message (GstBin * bin, GstMessage * message) { DvbBaseBin *dvbbasebin; dvbbasebin = GST_DVB_BASE_BIN (bin); /* note: message->src might be a GstPad, so use element cast w/o typecheck */ if (GST_ELEMENT_CAST (message->src) == GST_ELEMENT (dvbbasebin->tsparse)) { GstMpegTsSection *section = gst_message_parse_mpegts_section (message); if (section) { switch (GST_MPEGTS_SECTION_TYPE (section)) { case GST_MPEGTS_SECTION_PAT: dvb_base_bin_pat_info_cb (dvbbasebin, section); break; case GST_MPEGTS_SECTION_PMT: dvb_base_bin_pmt_info_cb (dvbbasebin, section); break; default: break; } gst_mpegts_section_unref (section); } } /* chain up */ GST_BIN_CLASS (parent_class)->handle_message (bin, message); } static void dvb_base_bin_pat_info_cb (DvbBaseBin * dvbbasebin, GstMpegTsSection * section) { GPtrArray *pat; DvbBaseBinProgram *program; DvbBaseBinStream *stream; guint old_pmt_pid; gint i; gboolean rebuild_filter = FALSE; if (!(pat = gst_mpegts_section_get_pat (section))) { GST_WARNING_OBJECT (dvbbasebin, "got invalid PAT"); return; } for (i = 0; i < pat->len; i++) { GstMpegTsPatProgram *patp = g_ptr_array_index (pat, i); program = dvb_base_bin_get_program (dvbbasebin, patp->program_number); if (program == NULL) program = dvb_base_bin_add_program (dvbbasebin, patp->program_number); old_pmt_pid = program->pmt_pid; program->pmt_pid = patp->network_or_program_map_PID; if (program->selected) { /* PAT update */ if (old_pmt_pid != G_MAXUINT16 && old_pmt_pid != program->pmt_pid) dvb_base_bin_get_stream (dvbbasebin, old_pmt_pid)->usecount -= 1; stream = dvb_base_bin_get_stream (dvbbasebin, program->pmt_pid); if (stream == NULL) stream = dvb_base_bin_add_stream (dvbbasebin, program->pmt_pid); stream->usecount += 1; rebuild_filter = TRUE; } } if (rebuild_filter) dvb_base_bin_rebuild_filter (dvbbasebin); } static void dvb_base_bin_pmt_info_cb (DvbBaseBin * dvbbasebin, GstMpegTsSection * section) { const GstMpegTsPMT *pmt; DvbBaseBinProgram *program; guint program_number; pmt = gst_mpegts_section_get_pmt (section); if (G_UNLIKELY (pmt == NULL)) { GST_WARNING_OBJECT (dvbbasebin, "Received invalid PMT"); return; } program_number = section->subtable_extension; program = dvb_base_bin_get_program (dvbbasebin, program_number); if (program == NULL) { GST_WARNING ("got PMT for program %d but program not in PAT", program_number); program = dvb_base_bin_add_program (dvbbasebin, program_number); } program->old_pmt = program->pmt; program->old_section = program->section; program->pmt = pmt; program->section = gst_mpegts_section_ref (section); /* activate the program if it's selected and either it's not active or its pmt * changed */ if (program->selected && (!program->active || program->old_pmt != NULL)) dvb_base_bin_activate_program (dvbbasebin, program); if (program->old_pmt) { gst_mpegts_section_unref (program->old_section); program->old_pmt = NULL; } } static guint dvb_base_bin_uri_get_type (GType type) { return GST_URI_SRC; } static const gchar *const * dvb_base_bin_uri_get_protocols (GType type) { static const gchar *protocols[] = { "dvb", NULL }; return protocols; } static gchar * dvb_base_bin_uri_get_uri (GstURIHandler * handler) { return g_strdup ("dvb://"); } static gboolean dvb_base_bin_uri_set_uri (GstURIHandler * handler, const gchar * uri, GError ** error) { DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (handler); GError *err = NULL; gchar *location; location = gst_uri_get_location (uri); if (location == NULL) goto no_location; if (!set_properties_for_channel (GST_ELEMENT (dvbbasebin), location, &err)) goto set_properties_failed; /* FIXME: here is where we parse channels.conf */ g_free (location); return TRUE; /* ERRORS */ post_error_and_exit: { gst_element_message_full (GST_ELEMENT (dvbbasebin), GST_MESSAGE_ERROR, err->domain, err->code, g_strdup (err->message), NULL, __FILE__, GST_FUNCTION, __LINE__); g_propagate_error (error, err); return FALSE; } no_location: { g_set_error (&err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI, "No details to DVB URI"); goto post_error_and_exit; } set_properties_failed: { g_free (location); goto post_error_and_exit; } } static void dvb_base_bin_uri_handler_init (gpointer g_iface, gpointer iface_data) { GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface; iface->get_type = dvb_base_bin_uri_get_type; iface->get_protocols = dvb_base_bin_uri_get_protocols; iface->get_uri = dvb_base_bin_uri_get_uri; iface->set_uri = dvb_base_bin_uri_set_uri; } gboolean gst_dvb_base_bin_plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (dvb_base_bin_debug, "dvbbasebin", 0, "DVB bin"); cam_init (); return gst_element_register (plugin, "dvbbasebin", GST_RANK_NONE, GST_TYPE_DVB_BASE_BIN); } static void dvb_base_bin_program_destroy (gpointer data) { DvbBaseBinProgram *program; program = (DvbBaseBinProgram *) data; if (program->pmt) { program->pmt = NULL; gst_mpegts_section_unref (program->section); } g_free (program); } static void dvb_base_bin_task (DvbBaseBin * basebin) { gint pollres; GST_DEBUG_OBJECT (basebin, "In task"); /* If we haven't tried to open the cam, try now */ if (G_UNLIKELY (basebin->trycam)) dvb_base_bin_init_cam (basebin); /* poll with timeout */ pollres = gst_poll_wait (basebin->poll, GST_SECOND / 4); if (G_UNLIKELY (pollres == -1)) { gst_task_stop (basebin->task); return; } if (basebin->hwcam) { cam_device_poll (basebin->hwcam); if (basebin->pmtlist_changed) { if (cam_device_ready (basebin->hwcam)) { GST_DEBUG_OBJECT (basebin, "pmt list changed"); dvb_base_bin_reset_pmtlist (basebin); } else { GST_DEBUG_OBJECT (basebin, "pmt list changed but CAM not ready"); } } } }