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gstreamer/sys/dvb/dvbbasebin.c

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/*
* dvbbasebin.c -
* Copyright (C) 2007 Alessandro Decina
*
* Authors:
* Alessandro Decina <alessandro@nnva.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include "dvbbasebin.h"
#include "parsechannels.h"
GST_DEBUG_CATEGORY_STATIC (dvb_base_bin_debug);
#define GST_CAT_DEFAULT dvb_base_bin_debug
static GstStaticPadTemplate src_template =
GST_STATIC_PAD_TEMPLATE ("src%d", GST_PAD_SRC,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ")
);
static GstStaticPadTemplate program_template =
GST_STATIC_PAD_TEMPLATE ("program_%d", GST_PAD_SRC,
GST_PAD_SOMETIMES,
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
/* FILL ME */
};
typedef struct
{
guint16 pid;
guint usecount;
} DvbBaseBinStream;
typedef struct
{
gint program_number;
guint16 pmt_pid;
guint16 pcr_pid;
GstStructure *pmt;
GstStructure *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 gboolean dvb_base_bin_ts_pad_probe_cb (GstPad * pad,
GstBuffer * buf, gpointer user_data);
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,
GstStructure * pat);
static void dvb_base_bin_pmt_info_cb (DvbBaseBin * dvbbasebin,
GstStructure * pmt);
static void dvb_base_bin_pad_added_cb (GstElement * mpegtsparse,
GstPad * pad, DvbBaseBin * dvbbasebin);
static void dvb_base_bin_pad_removed_cb (GstElement * mpegtsparse,
GstPad * pad, DvbBaseBin * dvbbasebin);
static GstPad *dvb_base_bin_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name);
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_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void dvb_base_bin_program_destroy (gpointer data);
static void
dvb_base_bin_setup_interfaces (GType type)
{
static const GInterfaceInfo urihandler_info = {
dvb_base_bin_uri_handler_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
}
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 };
*/
GST_BOILERPLATE_FULL (DvbBaseBin, dvb_base_bin, GstBin, GST_TYPE_BIN,
dvb_base_bin_setup_interfaces);
static void
dvb_base_bin_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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_details_simple (element_class, "DVB bin",
"Source/Bin/Video",
"Access descramble and split DVB streams",
"Alessandro Decina <alessandro@nnva.org>");
}
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"},
{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;
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 (dvbsrc_factory->type);
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;
}
if (dvbbasebin->ts_pad) {
gst_element_release_request_pad (GST_ELEMENT (dvbbasebin->mpegtsparse),
dvbbasebin->ts_pad);
dvbbasebin->ts_pad = NULL;
}
}
static gint16 initial_pids[] = { 0, 1, 0x10, 0x11, 0x12, 0x14, -1 };
static void
dvb_base_bin_init (DvbBaseBin * dvbbasebin, DvbBaseBinClass * klass)
{
DvbBaseBinStream *stream;
int i;
dvbbasebin->dvbsrc = gst_element_factory_make ("dvbsrc", NULL);
dvbbasebin->buffer_queue = gst_element_factory_make ("queue", NULL);
dvbbasebin->mpegtsparse = gst_element_factory_make ("mpegtsparse", NULL);
g_object_connect (dvbbasebin->mpegtsparse,
"signal::pad-added", dvb_base_bin_pad_added_cb, dvbbasebin,
"signal::pad-removed", dvb_base_bin_pad_removed_cb, dvbbasebin, NULL);
gst_bin_add_many (GST_BIN (dvbbasebin), dvbbasebin->dvbsrc,
dvbbasebin->buffer_queue, dvbbasebin->mpegtsparse, NULL);
gst_element_link_many (dvbbasebin->dvbsrc,
dvbbasebin->buffer_queue, dvbbasebin->mpegtsparse, NULL);
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);
}
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->mpegtsparse);
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_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:
/* 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:
g_object_set_property (G_OBJECT (dvbbasebin->mpegtsparse), pspec->name,
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:
g_object_get_property (G_OBJECT (dvbbasebin->dvbsrc), pspec->name, value);
break;
case PROP_PROGRAM_NUMBERS:
g_object_get_property (G_OBJECT (dvbbasebin->mpegtsparse), pspec->name,
value);
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)
{
GstPad *pad;
GstPad *ghost;
gchar *pad_name;
if (name == NULL)
name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ);
pad =
gst_element_get_request_pad (GST_DVB_BASE_BIN (element)->mpegtsparse,
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)->mpegtsparse), target);
gst_object_unref (target);
gst_element_remove_pad (element, pad);
}
static void
dvb_base_bin_reset_pmtlist (DvbBaseBin * dvbbasebin)
{
CamConditionalAccessPmtFlag flag;
GList *walk;
GstStructure *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 = GST_STRUCTURE (walk->data);
cam_device_set_pmt (dvbbasebin->hwcam, pmt, flag);
walk = walk->next;
}
dvbbasebin->pmtlist_changed = FALSE;
}
static gboolean
dvb_base_bin_ts_pad_probe_cb (GstPad * pad, GstBuffer * buf, gpointer user_data)
{
DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (user_data);
if (dvbbasebin->hwcam) {
cam_device_poll (dvbbasebin->hwcam);
if (dvbbasebin->pmtlist_changed) {
if (cam_device_ready (dvbbasebin->hwcam)) {
GST_DEBUG_OBJECT (dvbbasebin, "pmt list changed");
dvb_base_bin_reset_pmtlist (dvbbasebin);
} else {
GST_DEBUG_OBJECT (dvbbasebin, "pmt list changed but CAM not ready");
}
}
}
return TRUE;
}
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 ();
if (cam_device_open (dvbbasebin->hwcam, ca_file)) {
/* HACK: poll the cam in a buffer probe */
dvbbasebin->ts_pad =
gst_element_get_request_pad (dvbbasebin->mpegtsparse, "src%d");
gst_pad_add_buffer_probe (dvbbasebin->ts_pad,
G_CALLBACK (dvb_base_bin_ts_pad_probe_cb), dvbbasebin);
} else {
GST_ERROR_OBJECT (dvbbasebin, "could not open %s", ca_file);
cam_device_free (dvbbasebin->hwcam);
dvbbasebin->hwcam = NULL;
}
}
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:
dvb_base_bin_init_cam (dvbbasebin);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
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, GstStructure * pmt)
{
const GValue *streams;
guint program_number;
gint i;
const GValue *value;
GstStructure *stream_info;
DvbBaseBinStream *stream;
guint pid;
guint stream_type;
gst_structure_get_uint (pmt, "program-number", &program_number);
streams = gst_structure_get_value (pmt, "streams");
for (i = 0; i < gst_value_list_get_size (streams); ++i) {
value = gst_value_list_get_value (streams, i);
stream_info = g_value_get_boxed (value);
gst_structure_get_uint (stream_info, "pid", &pid);
gst_structure_get_uint (stream_info, "stream-type", &stream_type);
stream = dvb_base_bin_get_stream (dvbbasebin, (guint16) pid);
if (stream == NULL) {
GST_WARNING_OBJECT (dvbbasebin, "removing unknown stream %d ??", pid);
continue;
}
--stream->usecount;
}
}
static void
dvb_base_bin_add_pmt_streams (DvbBaseBin * dvbbasebin, GstStructure * pmt)
{
DvbBaseBinStream *stream;
const GValue *streams;
guint program_number;
gint i;
const GValue *value;
GstStructure *stream_info;
guint pid;
guint stream_type;
gst_structure_get_uint (pmt, "program-number", &program_number);
streams = gst_structure_get_value (pmt, "streams");
for (i = 0; i < gst_value_list_get_size (streams); ++i) {
value = gst_value_list_get_value (streams, i);
stream_info = g_value_get_boxed (value);
gst_structure_get_uint (stream_info, "pid", &pid);
gst_structure_get_uint (stream_info, "stream-type", &stream_type);
GST_DEBUG ("filtering stream %d stream_type %d", pid, stream_type);
stream = dvb_base_bin_get_stream (dvbbasebin, (guint16) pid);
if (stream == NULL)
stream = dvb_base_bin_add_stream (dvbbasebin, (guint16) pid);
++stream->usecount;
}
}
static void
dvb_base_bin_activate_program (DvbBaseBin * dvbbasebin,
DvbBaseBinProgram * program)
{
DvbBaseBinStream *stream;
guint pid;
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;
gst_structure_get_uint (program->pmt, "pcr-pid", &pid);
program->pcr_pid = 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, 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);
if (message->type == GST_MESSAGE_ELEMENT &&
GST_ELEMENT (message->src) == GST_ELEMENT (dvbbasebin->mpegtsparse)) {
const gchar *structure_name = gst_structure_get_name (message->structure);
if (strcmp (structure_name, "pat") == 0)
dvb_base_bin_pat_info_cb (dvbbasebin, message->structure);
else if (strcmp (structure_name, "pmt") == 0)
dvb_base_bin_pmt_info_cb (dvbbasebin, message->structure);
/*else if (strcmp (structure_name, "nit") == 0)
dvb_base_bin_nit_info_cb (dvbbasebin, message->structure);
else if (strcmp (structure_name, "sdt") == 0)
dvb_base_bin_sdt_info_cb (dvbbasebin, message->structure);
else if (strcmp (structure_name, "eit") == 0)
dvb_base_bin_eit_info_cb (dvbbasebin, message->structure); */
/* forward the message on */
gst_element_post_message (GST_ELEMENT_CAST (bin), message);
} else {
/* chain up */
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
}
}
static void
dvb_base_bin_pat_info_cb (DvbBaseBin * dvbbasebin, GstStructure * pat_info)
{
DvbBaseBinProgram *program;
DvbBaseBinStream *stream;
const GValue *value;
GstStructure *program_info;
guint program_number;
guint pid;
guint old_pmt_pid;
gint i;
gboolean rebuild_filter = FALSE;
const GValue *programs;
programs = gst_structure_get_value (pat_info, "programs");
for (i = 0; i < gst_value_list_get_size (programs); ++i) {
value = gst_value_list_get_value (programs, i);
program_info = g_value_get_boxed (value);
gst_structure_get_uint (program_info, "program-number", &program_number);
gst_structure_get_uint (program_info, "pid", &pid);
program = dvb_base_bin_get_program (dvbbasebin, program_number);
if (program == NULL)
program = dvb_base_bin_add_program (dvbbasebin, program_number);
old_pmt_pid = program->pmt_pid;
program->pmt_pid = 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, GstStructure * pmt)
{
DvbBaseBinProgram *program;
guint program_number;
gst_structure_get_uint (pmt, "program-number", &program_number);
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->pmt = gst_structure_copy (pmt);
/* 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_structure_free (program->old_pmt);
program->old_pmt = NULL;
}
}
static gint
get_pad_program_number (GstPad * pad)
{
gchar *progstr;
gchar *name;
name = gst_pad_get_name (pad);
if (strncmp (name, "program_", 8) != 0) {
g_free (name);
return -1;
}
progstr = strstr (name, "_");
g_free (name);
if (progstr == NULL)
return -1;
return strtol (++progstr, NULL, 10);
}
static void
dvb_base_bin_pad_added_cb (GstElement * mpegtsparse,
GstPad * pad, DvbBaseBin * dvbbasebin)
{
DvbBaseBinProgram *program;
gint program_number;
gchar *padname;
program_number = get_pad_program_number (pad);
if (program_number == -1)
return;
program = dvb_base_bin_get_program (dvbbasebin, program_number);
if (program == NULL)
program = dvb_base_bin_add_program (dvbbasebin, program_number);
program->selected = TRUE;
padname = gst_pad_get_name (pad);
program->ghost = gst_ghost_pad_new (padname, pad);
gst_pad_set_active (program->ghost, TRUE);
gst_element_add_pad (GST_ELEMENT (dvbbasebin), program->ghost);
/* if the program has a pmt, activate it now, otherwise it will get activated
* when there's a PMT */
if (!program->active && program->pmt_pid != G_MAXUINT16)
dvb_base_bin_activate_program (dvbbasebin, program);
g_free (padname);
}
static void
dvb_base_bin_pad_removed_cb (GstElement * mpegtsparse,
GstPad * pad, DvbBaseBin * dvbbasebin)
{
DvbBaseBinProgram *program;
gint program_number;
program_number = get_pad_program_number (pad);
if (program_number == -1)
return;
program = dvb_base_bin_get_program (dvbbasebin, program_number);
program->selected = FALSE;
dvb_base_bin_deactivate_program (dvbbasebin, program);
gst_element_remove_pad (GST_ELEMENT (dvbbasebin), program->ghost);
program->ghost = NULL;
}
static guint
dvb_base_bin_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
dvb_base_bin_uri_get_protocols (void)
{
static gchar *protocols[] = { (char *) "dvb", NULL };
return protocols;
}
static const gchar *
dvb_base_bin_uri_get_uri (GstURIHandler * handler)
{
return "dvb://";
}
static gboolean
dvb_base_bin_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
gboolean ret;
gchar *protocol;
DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (handler);
protocol = gst_uri_get_protocol (uri);
if (strcmp (protocol, "dvb") != 0) {
ret = FALSE;
} else {
gchar *location = gst_uri_get_location (uri);
if (location != NULL) {
ret = set_properties_for_channel (G_OBJECT (dvbbasebin), location);
g_free (location);
} else
ret = FALSE;
}
/* here is where we parse channels.conf */
g_free (protocol);
return ret;
}
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)
gst_structure_free (program->pmt);
g_free (program);
}
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