/* * GStreamer MythTV Plug-in Copyright (C) <2006> Rosfran Borges * This library is free software; you can * redistribute it and/or modify it under the terms of the GNU Library * General Public License as published by the Free Software Foundation; * either version 2 of the License, or (at your option) any later version. * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library * General Public License for more details. You should have received a copy * of the GNU Library General Public License along with this library; if * not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite * 330, Boston, MA 02111-1307, USA. */ /** * SECTION:element-mythtvsrc * * * * MythTVSrc allows to access a remote MythTV backend streaming Video/Audio server, * and to render audio and video content through a TCP/IP connection to a specific * port on this server, and based on a known MythTV protocol that is based on * some message passing, such as REQUEST_BLOCK on a specified number of bytes, to get * some chunk of remote file data. * You should pass the information aboute the remote MythTV backend server * through the location property. * * Examples * * If you want to get the LiveTV content (set channel, TV tuner, RemoteEncoder, * Recorder), * put the following URI: * * * myth://xxx.xxx.xxx.xxx:6543/livetv?channel=BBC * * * This URI will say to the gmyth library to configure the Recorder instance (used to * change the channel, start the TV multimedia content transmition, etc.), using * the IP address (xxx.xxx.xxx.xxx) and port number (6543) of the MythTV backend * server, and setting the channel name to "BBC". * * To get a already recorded the MythTV NUV file, put the following URI: * * * myth://xxx.xxx.xxx.xxx:6543/filename.nuv * * * This URI will say to the gmyth library to configure the Recorder instance (used to * change the channel, start the TV multimedia content transmition, etc.), using * the IP address (xxx.xxx.xxx.xxx) and port number (6543) of the MythTV backend * server, and setting the channel name to "BBC". * * Another possible way to use the LiveTV content, and just in the case you want to * use the mysql database, put the location URI in the following format: * * * myth://mythtv:mythtv@xxx.xxx.xxx.xxx:6543/?mythconverg&channel=9 * * * Where the first field is the protocol (myth), the second and third are user * name (mythtv) and password (mythtv), then backend host name and port number, * and the last field is the database name (mythconverg). * * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstmythtvsrc.h" #include #include #include #include #include #include #include #include GST_DEBUG_CATEGORY_STATIC(mythtvsrc_debug); #define GST_CAT_DEFAULT mythtvsrc_debug #define GST_GMYTHTV_ID_NUM 1 #define GST_GMYTHTV_CHANNEL_DEFAULT_NUM (-1) #define GMYTHTV_VERSION_DEFAULT 30 #define GMYTHTV_TRANSFER_MAX_WAITS 100 #define GMYTHTV_TRANSFER_MAX_RESENDS 2 #define GMYTHTV_TRANSFER_MAX_BUFFER (128*1024) #define MAX_READ_SIZE (4*1024) #define GST_FLOW_ERROR_NO_DATA (-101) #define REQUEST_MAX_SIZE (64*1024) #define INTERNAL_BUFFER_SIZE (90*1024) static const GstElementDetails gst_mythtv_src_details = GST_ELEMENT_DETAILS("MythTV client source", "Source/Network", "Control and receive data as a client over the network " "via raw socket connections using the MythTV protocol", "Rosfran Borges "); static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); /* * GST_STATIC_CAPS ("video/x-nuv")); */ enum { PROP_0, PROP_LOCATION, #ifndef GST_DISABLE_GST_DEBUG PROP_GMYTHTV_DBG, #endif PROP_GMYTHTV_VERSION, PROP_GMYTHTV_LIVE, PROP_GMYTHTV_LIVEID, PROP_GMYTHTV_LIVE_CHAINID, PROP_GMYTHTV_ENABLE_TIMING_POSITION, PROP_GMYTHTV_CHANNEL_NUM, PROP_GMYTHTV_MAX_TRY }; static void gst_mythtv_src_clear(GstMythtvSrc * mythtv_src); static void gst_mythtv_src_finalize(GObject * gobject); static GstFlowReturn gst_mythtv_src_create(GstPushSrc * psrc, GstBuffer ** outbuf); static gboolean gst_mythtv_src_start(GstBaseSrc * bsrc); static gboolean gst_mythtv_src_stop(GstBaseSrc * bsrc); static gboolean gst_mythtv_src_get_size(GstBaseSrc * bsrc, guint64 * size); static gboolean gst_mythtv_src_is_seekable(GstBaseSrc * push_src); static gboolean gst_mythtv_src_do_seek(GstBaseSrc * base, GstSegment * segment); static GstStateChangeReturn gst_mythtv_src_change_state(GstElement * element, GstStateChange transition); static void gst_mythtv_src_set_property(GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_mythtv_src_get_property(GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_mythtv_src_uri_handler_init(gpointer g_iface, gpointer iface_data); static gboolean gst_mythtv_src_handle_query(GstPad * pad, GstQuery * query); static gboolean gst_mythtv_src_handle_event(GstPad * pad, GstEvent * event); static GMythFileReadResult do_read_request_response(GstMythtvSrc * src, guint size, GByteArray * data_ptr); static void _urihandler_init(GType type) { static const GInterfaceInfo urihandler_info = { gst_mythtv_src_uri_handler_init, NULL, NULL }; g_type_add_interface_static(type, GST_TYPE_URI_HANDLER, &urihandler_info); GST_DEBUG_CATEGORY_INIT(mythtvsrc_debug, "mythtvsrc", 0, "MythTV src"); } GST_BOILERPLATE_FULL(GstMythtvSrc, gst_mythtv_src, GstPushSrc, GST_TYPE_PUSH_SRC, _urihandler_init) static void gst_mythtv_src_base_init(gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS(g_class); gst_element_class_add_pad_template(element_class, gst_static_pad_template_get (&srctemplate)); gst_element_class_set_details(element_class, &gst_mythtv_src_details); element_class->change_state = gst_mythtv_src_change_state; } static void gst_mythtv_src_class_init(GstMythtvSrcClass * klass) { GObjectClass *gobject_class; GstPushSrcClass *gstpushsrc_class; GstBaseSrcClass *gstbasesrc_class; gobject_class = (GObjectClass *) klass; gstbasesrc_class = (GstBaseSrcClass *) klass; gstpushsrc_class = (GstPushSrcClass *) klass; gobject_class->set_property = gst_mythtv_src_set_property; gobject_class->get_property = gst_mythtv_src_get_property; gobject_class->finalize = gst_mythtv_src_finalize; g_object_class_install_property (gobject_class, PROP_LOCATION, g_param_spec_string("location", "Location", "The location. In the form:" "\n\t\t\tmyth://a.com/file.nuv" "\n\t\t\tmyth://a.com:23223/file.nuv " "\n\t\t\ta.com/file.nuv - default scheme 'myth'", "", G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_VERSION, g_param_spec_int("mythtv-version", "mythtv-version", "Change MythTV version", 26, 30, 26, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_LIVEID, g_param_spec_int("mythtv-live-id", "mythtv-live-id", "Change MythTV version", 0, 200, GST_GMYTHTV_ID_NUM, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_LIVE_CHAINID, g_param_spec_string("mythtv-live-chainid", "mythtv-live-chainid", "Sets the MythTV chain ID (from TV Chain)", "", G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_LIVE, g_param_spec_boolean("mythtv-live", "mythtv-live", "Enable MythTV Live TV content streaming", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_ENABLE_TIMING_POSITION, g_param_spec_boolean("mythtv-enable-timing-position", "mythtv-enable-timing-position", "Enable MythTV Live TV content size continuous updating", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_CHANNEL_NUM, g_param_spec_string("mythtv-channel", "mythtv-channel", "Change MythTV channel number", "", G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_GMYTHTV_MAX_TRY, g_param_spec_int("max-try", "max-try", "Set the max try for get MythTV free recorder", 0, G_MAXINT, 10, G_PARAM_READWRITE)); #ifndef GST_DISABLE_GST_DEBUG g_object_class_install_property (gobject_class, PROP_GMYTHTV_DBG, g_param_spec_boolean("mythtv-debug", "mythtv-debug", "Enable MythTV debug messages", FALSE, G_PARAM_READWRITE)); #endif gstbasesrc_class->start = gst_mythtv_src_start; gstbasesrc_class->stop = gst_mythtv_src_stop; gstbasesrc_class->get_size = gst_mythtv_src_get_size; gstbasesrc_class->is_seekable = gst_mythtv_src_is_seekable; gstbasesrc_class->do_seek = gst_mythtv_src_do_seek; gstpushsrc_class->create = gst_mythtv_src_create; GST_DEBUG_CATEGORY_INIT(mythtvsrc_debug, "mythtvsrc", 0, "MythTV Client Source"); } static void gst_mythtv_src_init(GstMythtvSrc * this, GstMythtvSrcClass * g_class) { this->file = NULL; this->unique_setup = FALSE; this->mythtv_version = GMYTHTV_VERSION_DEFAULT; this->state = GST_MYTHTV_SRC_FILE_TRANSFER; this->bytes_read = 0; this->prev_content_size = 0; this->content_size = 0; this->read_offset = 0; this->content_size_last = 0; this->live_tv = FALSE; this->enable_timing_position = FALSE; this->update_prog_chain = FALSE; this->user_agent = g_strdup("mythtvsrc"); this->update_prog_chain = FALSE; this->channel_name = NULL; this->eos = FALSE; this->bytes_queue = NULL; this->wait_to_transfer = 0; gst_base_src_set_format(GST_BASE_SRC(this), GST_FORMAT_BYTES); gst_pad_set_event_function(GST_BASE_SRC_PAD(GST_BASE_SRC(this)), gst_mythtv_src_handle_event); gst_pad_set_query_function(GST_BASE_SRC_PAD(GST_BASE_SRC(this)), gst_mythtv_src_handle_query); } static void gst_mythtv_src_clear(GstMythtvSrc * mythtv_src) { mythtv_src->unique_setup = FALSE; if (mythtv_src->spawn_livetv) { g_object_unref(mythtv_src->spawn_livetv); mythtv_src->spawn_livetv = NULL; } if (mythtv_src->file) { g_object_unref(mythtv_src->file); mythtv_src->file = NULL; } if (mythtv_src->backend_info) { g_object_unref(mythtv_src->backend_info); mythtv_src->backend_info = NULL; } if (mythtv_src->bytes_queue) { g_byte_array_free(mythtv_src->bytes_queue, TRUE); mythtv_src->bytes_queue = NULL; } } static void gst_mythtv_src_finalize(GObject * gobject) { GstMythtvSrc *this = GST_MYTHTV_SRC(gobject); gst_mythtv_src_clear(this); if (this->uri_name) { g_free(this->uri_name); this->uri_name = NULL; } if (this->user_agent) { g_free(this->user_agent); this->user_agent = NULL; } G_OBJECT_CLASS(parent_class)->finalize(gobject); } static GMythFileReadResult do_read_request_response(GstMythtvSrc * src, guint size, GByteArray * data_ptr) { gint read = 0; guint sizetoread = size; gint max_iters = GMYTHTV_TRANSFER_MAX_RESENDS; GMythFileReadResult result; GST_LOG_OBJECT(src, "Starting: Reading %d bytes...", sizetoread); /* * Loop sending the Myth File Transfer request: Retry whilst * authentication fails and we supply it. */ while (sizetoread == size && --max_iters > 0) { /* * if ( gmyth_backend_info_is_local_file(src->backend_info) ) */ if (IS_GMYTH_FILE_LOCAL(src->file)) result = gmyth_file_local_read(GMYTH_FILE_LOCAL(src->file), data_ptr, sizetoread, src->live_tv); else if (IS_GMYTH_FILE_TRANSFER(src->file)) result = gmyth_file_transfer_read(GMYTH_FILE_TRANSFER(src->file), data_ptr, sizetoread, src->live_tv); if (data_ptr->len > 0) { read += data_ptr->len; sizetoread -= data_ptr->len; } else if (data_ptr->len <= 0) { if (src->live_tv == FALSE) { result = GMYTH_FILE_READ_EOF; goto eos; } else { if (result == GMYTH_FILE_READ_ERROR) { /* -314 */ GST_INFO_OBJECT(src, "[LiveTV] FileTransfer READ_ERROR!"); goto done; } else if (result == GMYTH_FILE_READ_NEXT_PROG_CHAIN) { /* -315 */ GST_INFO_OBJECT(src, "[LiveTV] FileTransfer - Go to athe next program chain!"); src->update_prog_chain = TRUE; continue; } goto done; } } /* * else if (data_ptr->len == 0) goto done; */ if (read == sizetoread) goto done; } if ((read < 0 && !src->live_tv) || max_iters == 0) { result = GMYTH_FILE_READ_EOF; goto eos; } goto done; eos: src->eos = TRUE; done: return result; } static GstFlowReturn gst_mythtv_src_create(GstPushSrc * psrc, GstBuffer ** outbuf) { GstMythtvSrc *src; GstFlowReturn ret = GST_FLOW_OK; guint buffer_size_inter = 0; src = GST_MYTHTV_SRC(psrc); /* * The caller should know the number of bytes and not read beyond EOS. */ if (G_UNLIKELY(src->eos)) goto eos; GST_DEBUG_OBJECT(src, "offset = %" G_GUINT64_FORMAT ", size = %d...", src->read_offset, MAX_READ_SIZE); GST_DEBUG_OBJECT(src, "Create: buffer_remain: %d, buffer_size = %d.", (gint) src->buffer_remain, src->bytes_queue->len); program_chain_changed: /* * just get from the byte array, no network effort... */ if ((src->buffer_remain = src->bytes_queue->len) < MAX_READ_SIZE) { GByteArray *buffer; GMythFileReadResult result = GMYTH_FILE_READ_OK; buffer = NULL; buffer_size_inter = (INTERNAL_BUFFER_SIZE - src->buffer_remain); if (buffer_size_inter > REQUEST_MAX_SIZE) buffer_size_inter = REQUEST_MAX_SIZE; buffer = g_byte_array_new(); result = do_read_request_response(src, buffer_size_inter, buffer); /* * got the next program info? */ if (G_UNLIKELY(src->update_prog_chain) || (result == GMYTH_FILE_READ_NEXT_PROG_CHAIN)) { GST_DEBUG_OBJECT(src, "Update PROGRAM CHAIN!!! buffer_size = %d.", src->bytes_queue->len); gst_pad_push_event(GST_BASE_SRC_PAD(GST_BASE_SRC(psrc)), gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, NULL)); /* * gst_pad_push_event (GST_BASE_SRC_PAD (GST_BASE_SRC (psrc)), * gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, 0, * -1, 0)); */ src->update_prog_chain = FALSE; src->eos = FALSE; if (result == GMYTH_FILE_READ_NEXT_PROG_CHAIN) { /* * if (buffer != NULL) { g_byte_array_free (buffer, TRUE); * buffer = NULL; } goto program_chain_changed; */ } else if (result == GMYTH_FILE_READ_OK) { /* * remove wasteful, NUV file header data */ /* * buffer = g_byte_array_remove_range( buffer, 0, 512 ); */ /* * TODO: need to send a new segment event to NUVDemux? */ // gst_pad_push_event (GST_BASE_SRC_PAD (GST_BASE_SRC // (psrc)), // gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, // 0, -1, 0)); /* * goto change_progchain; */ } } /* */ if (G_UNLIKELY(buffer->len < 0)) { if (buffer != NULL) { g_byte_array_free(buffer, TRUE); buffer = NULL; } if (src->live_tv || (result == GMYTH_FILE_READ_NEXT_PROG_CHAIN)) goto change_progchain; else goto read_error; } else if (G_UNLIKELY(buffer->len == 0)) { if (buffer != NULL) { g_byte_array_free(buffer, TRUE); buffer = NULL; } if (!src->live_tv) { if (src->eos) goto eos; else goto done; } else goto program_chain_changed; } src->bytes_queue = g_byte_array_append(src->bytes_queue, buffer->data, buffer->len); if (buffer->len > buffer_size_inter) GST_WARNING_OBJECT(src, "INCREASED buffer size! Backend sent more than we ask him... (%d)", abs(buffer->len - buffer_size_inter)); src->buffer_remain += buffer->len; if (buffer != NULL) { g_byte_array_free(buffer, TRUE); buffer = NULL; } /* * GST_DEBUG_OBJECT (src, "BYTES READ (actual) = %d, BYTES READ * (cumulative) = %llu, " "OFFSET = %llu, CONTENT SIZE = %llu.", * read, src->bytes_read, src->read_offset, src->content_size); */ } guint buffer_size; buffer_size = (src->buffer_remain < MAX_READ_SIZE) ? src->buffer_remain : MAX_READ_SIZE; *outbuf = gst_buffer_new(); /* * GST_DEBUG_OBJECT (src, "read from network? %s!, buffer_remain = * %d", (buffer_size_inter == 0) ? "NO, got from buffer" : "YES, go * see the backend's log file", src->buffer_remain); */ GST_BUFFER_SIZE(*outbuf) = buffer_size; GST_BUFFER_MALLOCDATA(*outbuf) = g_malloc0(GST_BUFFER_SIZE(*outbuf)); GST_BUFFER_DATA(*outbuf) = GST_BUFFER_MALLOCDATA(*outbuf); g_memmove(GST_BUFFER_DATA((*outbuf)), src->bytes_queue->data, GST_BUFFER_SIZE(*outbuf)); GST_BUFFER_OFFSET(*outbuf) = src->read_offset; GST_BUFFER_OFFSET_END(*outbuf) = src->read_offset + GST_BUFFER_SIZE(*outbuf); src->buffer_remain -= GST_BUFFER_SIZE(*outbuf); src->read_offset += GST_BUFFER_SIZE(*outbuf); src->bytes_read += GST_BUFFER_SIZE(*outbuf); // GST_DEBUG_OBJECT (src, "Buffer output with size: %d", // GST_BUFFER_SIZE (*outbuf)); /* * flushs the newly buffer got from byte array */ src->bytes_queue = g_byte_array_remove_range(src->bytes_queue, 0, buffer_size); if (src->eos || (!src->live_tv && (src->bytes_read >= src->content_size)) ) goto eos; done: { return ret; } eos: { return GST_FLOW_UNEXPECTED; } /* * ERRORS */ read_error: { GST_ELEMENT_ERROR(src, RESOURCE, READ, (NULL), ("Could not read any bytes (%i, %s)", read, src->uri_name)); return GST_FLOW_ERROR; } change_progchain: { GST_ELEMENT_ERROR(src, RESOURCE, READ, (NULL), ("Seek failed, go to the next program info... (%i, %s)", read, src->uri_name)); /* * TODO: need to send a new segment event to NUVDemux? */ gst_pad_push_event(GST_BASE_SRC_PAD(GST_BASE_SRC(psrc)), gst_event_new_new_segment(TRUE, 1.0, GST_FORMAT_TIME, 0, -1, 0)); goto program_chain_changed; } } gint64 gst_mythtv_src_get_position(GstMythtvSrc * src) { gint64 size_tmp = 0; guint max_tries = 2; if (src->live_tv == TRUE && (abs(src->content_size - src->bytes_read) < GMYTHTV_TRANSFER_MAX_BUFFER)) { get_file_pos: g_usleep(10); size_tmp = gmyth_recorder_get_file_position(src->spawn_livetv->recorder); if (size_tmp > (src->content_size + GMYTHTV_TRANSFER_MAX_BUFFER)) src->content_size = size_tmp; else if (size_tmp > 0 && --max_tries > 0) goto get_file_pos; GST_LOG_OBJECT(src, "GET_POSITION: file_position = %lld", size_tmp); /* * sets the last content size amount before it can be updated */ src->prev_content_size = src->content_size; } return src->content_size; } static gboolean gst_mythtv_src_do_seek(GstBaseSrc * base, GstSegment * segment) { GstMythtvSrc *src = GST_MYTHTV_SRC(base); gint64 new_offset = -1; gint64 actual_seek = segment->start; gboolean ret = TRUE; GST_LOG_OBJECT(src, "seek, segment: %" GST_SEGMENT_FORMAT, segment); if (segment->format == GST_FORMAT_TIME) { goto done; } GST_LOG_OBJECT(src, "Trying to seek at the value (actual_seek = %lld, read_offset = %lld)", actual_seek, src->read_offset); /* * verify if it needs to seek */ if (src->read_offset != actual_seek) { /* * if ( gmyth_backend_info_is_local_file(src->backend_info) ) */ if (IS_GMYTH_FILE_LOCAL(src->file)) new_offset = gmyth_file_local_seek(GMYTH_FILE_LOCAL(src->file), segment->start, G_SEEK_SET); else if (IS_GMYTH_FILE_TRANSFER(src->file)) new_offset = gmyth_file_transfer_seek(GMYTH_FILE_TRANSFER(src->file), segment->start, SEEK_SET); GST_LOG_OBJECT(src, "Segment offset start = %lld, SRC Offset = %lld, NEW actual backend SEEK Offset = %lld.", segment->start, src->read_offset, new_offset); if (G_UNLIKELY(new_offset < 0)) { ret = FALSE; if (!src->live_tv) goto eos; } src->read_offset = new_offset; if (ret == FALSE) { GST_INFO_OBJECT(src, "Failed to set the SEEK on segment!"); } } done: return ret; eos: { GST_DEBUG_OBJECT(src, "EOS found on seeking!!!"); return FALSE; } } /* * create a socket for connecting to remote server */ static gboolean gst_mythtv_src_start(GstBaseSrc * bsrc) { GstMythtvSrc *src = GST_MYTHTV_SRC(bsrc); GString *chain_id_local = NULL; GMythURI *gmyth_uri = NULL; gboolean ret = TRUE; GstMessage *msg; if (src->unique_setup == FALSE) { src->unique_setup = TRUE; } else { goto done; } gmyth_uri = gmyth_uri_new_with_value(src->uri_name); src->backend_info = gmyth_backend_info_new_with_uri(src->uri_name); src->live_tv = gmyth_uri_is_livetv(gmyth_uri); /* * testing UPnP... */ /* * gmyth_backend_info_set_hostname( src->backend_info, NULL ); */ if (src->live_tv) { src->spawn_livetv = gmyth_livetv_new(src->backend_info); gchar *ch = gmyth_uri_get_channel_name(gmyth_uri); if (ch != NULL) src->channel_name = ch; if (src->channel_name != NULL) { gboolean result; result = gmyth_livetv_channel_name_setup(src->spawn_livetv, src->channel_name); if (result == FALSE) { GST_INFO_OBJECT(src, "LiveTV setup felt down on error"); ret = FALSE; goto init_failed; } } else { if (gmyth_livetv_setup(src->spawn_livetv) == FALSE) { GST_INFO_OBJECT(src, "LiveTV setup felt down on error"); ret = FALSE; goto init_failed; } } /* * testing change channel... */ /* * gmyth_recorder_change_channel( src->spawn_livetv->recorder, * CHANNEL_DIRECTION_UP ); */ src->file = GMYTH_FILE(gmyth_livetv_create_file_transfer (src->spawn_livetv)); if (NULL == src->file) { GST_INFO_OBJECT(src, "[LiveTV] FileTransfer equals to NULL"); ret = FALSE; goto init_failed; } /* * Check if the file is local to this specific client renderer */ if (gmyth_uri_is_local_file(gmyth_uri)) ret = gmyth_file_local_open(GMYTH_FILE_LOCAL(src->file)); else ret = gmyth_file_transfer_open(GMYTH_FILE_TRANSFER(src->file), src->spawn_livetv->uri != NULL ? gmyth_uri_get_path(src-> spawn_livetv-> uri) : src->spawn_livetv->proginfo-> pathname->str); /* * sets the mythtvsrc "location" property */ g_object_set(src, "location", gmyth_file_get_uri(src->file), NULL); if (!ret) { GST_INFO_OBJECT(src, "Error: couldn't open the FileTransfer from LiveTV source!"); g_object_unref(src->file); src->file = NULL; goto init_failed; } } else { /* * Check if the file is local to this specific client renderer, * and tries to open a local connection */ if (gmyth_uri_is_local_file(gmyth_uri)) { src->file = GMYTH_FILE(gmyth_file_local_new(src->backend_info)); ret = gmyth_file_local_open(GMYTH_FILE_LOCAL(src->file)); } else { src->file = GMYTH_FILE(gmyth_file_transfer_new(src->backend_info)); ret = gmyth_file_transfer_open(GMYTH_FILE_TRANSFER(src->file), src->uri_name); } } /* if (else) - recorded FileTransfer */ if (NULL == src->file) { GST_INFO_OBJECT(src, "FileTransfer is NULL"); goto init_failed; } /* * GST_INFO_OBJECT( src, "uri = %s", src->spawn_livetv->file); */ if (ret == FALSE) { #ifndef GST_DISABLE_GST_DEBUG if (src->mythtv_msgs_dbg) GST_INFO_OBJECT(src, "MythTV FileTransfer request failed when setting up socket connection!"); #endif goto begin_req_failed; } GST_INFO_OBJECT(src, "MythTV FileTransfer filesize = %lld, content_size = %lld!", gmyth_file_get_filesize(src->file), src->content_size); src->content_size = gmyth_file_get_filesize(src->file); msg = gst_message_new_duration(GST_OBJECT(src), GST_FORMAT_BYTES, src->content_size); gst_element_post_message(GST_ELEMENT(src), msg); src->do_start = FALSE; /* * this is used for the buffer cache */ src->bytes_queue = g_byte_array_sized_new(INTERNAL_BUFFER_SIZE); src->buffer_remain = 0; gst_pad_push_event(GST_BASE_SRC_PAD(GST_BASE_SRC(src)), gst_event_new_new_segment(TRUE, 1.0, GST_FORMAT_TIME, 0, src->content_size, 0)); done: if (gmyth_uri != NULL) { g_object_unref(gmyth_uri); gmyth_uri = NULL; } if (chain_id_local != NULL) { g_string_free(chain_id_local, TRUE); chain_id_local = NULL; } return TRUE; /* * ERRORS */ init_failed: if (gmyth_uri != NULL) { g_object_unref(gmyth_uri); gmyth_uri = NULL; } if (src->spawn_livetv != NULL) { g_object_unref(src->spawn_livetv); src->spawn_livetv = NULL; } GST_ELEMENT_ERROR(src, LIBRARY, INIT, (NULL), ("Could not initialize MythTV library (%i, %s)", ret, src->uri_name)); gst_mythtv_src_clear(src); return FALSE; begin_req_failed: if (gmyth_uri != NULL) { g_object_unref(gmyth_uri); gmyth_uri = NULL; } GST_ELEMENT_ERROR(src, LIBRARY, INIT, (NULL), ("Could not begin request sent to MythTV server (%i, %s)", ret, src->uri_name)); return FALSE; } static gboolean gst_mythtv_src_get_size(GstBaseSrc * bsrc, guint64 * size) { GstMythtvSrc *src = GST_MYTHTV_SRC(bsrc); gboolean ret = TRUE; GST_LOG_OBJECT(src, "Differs from previous content size: %d (max.: %d)", abs(src->content_size - src->prev_content_size), GMYTHTV_TRANSFER_MAX_BUFFER); if (src->live_tv) { ret = FALSE; } else if (src->live_tv && src->enable_timing_position && (abs(src->content_size - src->bytes_read) < GMYTHTV_TRANSFER_MAX_BUFFER)) { gint64 new_offset = gmyth_recorder_get_file_position(src->spawn_livetv->recorder); if (new_offset > 0 && new_offset > src->content_size) { src->content_size = new_offset; } else if (new_offset < src->content_size) { src->update_prog_chain = TRUE; } } *size = src->content_size; GST_LOG_OBJECT(src, "Content size = %lld", src->content_size); return ret; } /* * close the socket and associated resources used both to recover from * errors and go to NULL state */ static gboolean gst_mythtv_src_stop(GstBaseSrc * bsrc) { GstMythtvSrc *src = GST_MYTHTV_SRC(bsrc); gst_mythtv_src_clear(src); /* * src->eos = FALSE; */ return TRUE; } static gboolean gst_mythtv_src_handle_event(GstPad * pad, GstEvent * event) { GstMythtvSrc *src = GST_MYTHTV_SRC(GST_PAD_PARENT(pad)); gint64 cont_size = 0; gboolean ret = TRUE; switch (GST_EVENT_TYPE(event)) { case GST_EVENT_EOS: if (src->live_tv) { cont_size = gst_mythtv_src_get_position(src); if (cont_size > src->content_size) { src->content_size = cont_size; src->eos = FALSE; } else { src->eos = TRUE; gst_element_set_state(GST_ELEMENT(src), GST_STATE_NULL); gst_element_set_locked_state(GST_ELEMENT(src), FALSE); } } break; default: ret = gst_pad_event_default(pad, event); } GST_DEBUG_OBJECT (src, "HANDLE EVENT %d", ret); return ret; } static gboolean gst_mythtv_src_is_seekable(GstBaseSrc * push_src) { return TRUE; } static gboolean gst_mythtv_src_handle_query(GstPad * pad, GstQuery * query) { gboolean res = FALSE; GstMythtvSrc *myth = GST_MYTHTV_SRC(gst_pad_get_parent(pad)); GstFormat formt; switch (GST_QUERY_TYPE(query)) { case GST_QUERY_POSITION: { gst_query_parse_position(query, &formt, NULL); if (formt == GST_FORMAT_BYTES) { gst_query_set_position(query, formt, myth->read_offset); GST_DEBUG_OBJECT(myth, "POS %" G_GINT64_FORMAT, myth->read_offset); res = TRUE; } else if (formt == GST_FORMAT_TIME) { res = gst_pad_query_default(pad, query); } break; } case GST_QUERY_DURATION: { gst_query_parse_duration(query, &formt, NULL); if (formt == GST_FORMAT_BYTES) { gint64 size = myth->content_size; gst_query_set_duration(query, GST_FORMAT_BYTES, 10); GST_DEBUG_OBJECT(myth, "SIZE %" G_GINT64_FORMAT, size); res = TRUE; } else if (formt == GST_FORMAT_TIME) { res = gst_pad_query_default(pad, query); } break; } default: { res = gst_pad_query_default(pad, query); break; } } gst_object_unref(myth); return res; } static GstStateChangeReturn gst_mythtv_src_change_state(GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_FAILURE; GstMythtvSrc *src = GST_MYTHTV_SRC(element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: break; case GST_STATE_CHANGE_READY_TO_PAUSED: case GST_STATE_CHANGE_PAUSED_TO_PLAYING: if (src->live_tv) { if (!gmyth_recorder_send_frontend_ready_command (src->spawn_livetv->recorder)) GST_WARNING_OBJECT(src, "Couldn't send the FRONTEND_READY message to the backend!"); else GST_DEBUG_OBJECT(src, "FRONTEND_READY was sent to the backend"); } break; default: break; } ret = GST_ELEMENT_CLASS(parent_class)->change_state(element, transition); if (ret == GST_STATE_CHANGE_FAILURE) { return ret; } switch (transition) { case GST_STATE_CHANGE_READY_TO_NULL: gst_mythtv_src_clear(src); break; case GST_STATE_CHANGE_PLAYING_TO_PAUSED: case GST_STATE_CHANGE_PAUSED_TO_READY: break; default: break; } return ret; } static void gst_mythtv_src_set_property(GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstMythtvSrc *mythtvsrc = GST_MYTHTV_SRC(object); GST_OBJECT_LOCK(mythtvsrc); switch (prop_id) { case PROP_LOCATION: { if (!g_value_get_string(value)) { GST_WARNING("location property cannot be NULL"); break; } if (mythtvsrc->uri_name != NULL) { g_free(mythtvsrc->uri_name); mythtvsrc->uri_name = NULL; } mythtvsrc->uri_name = g_value_dup_string(value); break; } #ifndef GST_DISABLE_GST_DEBUG case PROP_GMYTHTV_DBG: { mythtvsrc->mythtv_msgs_dbg = g_value_get_boolean(value); break; } #endif case PROP_GMYTHTV_VERSION: { mythtvsrc->mythtv_version = g_value_get_int(value); break; } case PROP_GMYTHTV_LIVEID: { mythtvsrc->live_tv_id = g_value_get_int(value); break; } case PROP_GMYTHTV_LIVE: { mythtvsrc->live_tv = g_value_get_boolean(value); break; } case PROP_GMYTHTV_ENABLE_TIMING_POSITION: { mythtvsrc->enable_timing_position = g_value_get_boolean(value); break; } case PROP_GMYTHTV_LIVE_CHAINID: { if (!g_value_get_string(value)) { GST_WARNING("MythTV Live chainid property cannot be NULL"); break; } if (mythtvsrc->live_chain_id != NULL) { g_free(mythtvsrc->live_chain_id); mythtvsrc->live_chain_id = NULL; } mythtvsrc->live_chain_id = g_value_dup_string(value); break; } case PROP_GMYTHTV_CHANNEL_NUM: { mythtvsrc->channel_name = g_value_dup_string(value); break; } case PROP_GMYTHTV_MAX_TRY: { mythtvsrc->max_try = g_value_get_int(value); break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); break; } GST_OBJECT_UNLOCK(mythtvsrc); } static void gst_mythtv_src_get_property(GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstMythtvSrc *mythtvsrc = GST_MYTHTV_SRC(object); GST_OBJECT_LOCK(mythtvsrc); switch (prop_id) { case PROP_LOCATION: { g_value_set_string(value, mythtvsrc->uri_name); break; } #ifndef GST_DISABLE_GST_DEBUG case PROP_GMYTHTV_DBG: g_value_set_boolean(value, mythtvsrc->mythtv_msgs_dbg); break; #endif case PROP_GMYTHTV_VERSION: { g_value_set_int(value, mythtvsrc->mythtv_version); break; } case PROP_GMYTHTV_LIVEID: { g_value_set_int(value, mythtvsrc->live_tv_id); break; } case PROP_GMYTHTV_LIVE: g_value_set_boolean(value, mythtvsrc->live_tv); break; case PROP_GMYTHTV_ENABLE_TIMING_POSITION: g_value_set_boolean(value, mythtvsrc->enable_timing_position); break; case PROP_GMYTHTV_LIVE_CHAINID: { g_value_set_string(value, mythtvsrc->live_chain_id); break; } case PROP_GMYTHTV_CHANNEL_NUM: { g_value_set_string(value, mythtvsrc->channel_name); break; } case PROP_GMYTHTV_MAX_TRY: { g_value_set_int(value, mythtvsrc->max_try); break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); break; } GST_OBJECT_UNLOCK(mythtvsrc); } static gboolean plugin_init(GstPlugin * plugin) { return gst_element_register(plugin, "mythtvsrc", GST_RANK_NONE, GST_TYPE_MYTHTV_SRC); } GST_PLUGIN_DEFINE(GST_VERSION_MAJOR, GST_VERSION_MINOR, "mythtv", "lib MythTV src", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); /*** GSTURIHANDLER INTERFACE *************************************************/ static guint gst_mythtv_src_uri_get_type(void) { return GST_URI_SRC; } static gchar ** gst_mythtv_src_uri_get_protocols(void) { static gchar *protocols[] = { "myth", "myths", NULL }; return protocols; } static const gchar * gst_mythtv_src_uri_get_uri(GstURIHandler * handler) { GstMythtvSrc *src = GST_MYTHTV_SRC(handler); return src->uri_name; } static gboolean gst_mythtv_src_uri_set_uri(GstURIHandler * handler, const gchar * uri) { GstMythtvSrc *src = GST_MYTHTV_SRC(handler); gchar *protocol; protocol = gst_uri_get_protocol(uri); if ((strcmp(protocol, "myth") != 0) && (strcmp(protocol, "myths") != 0)) { g_free(protocol); return FALSE; } g_free(protocol); g_object_set(src, "location", uri, NULL); return TRUE; } static void gst_mythtv_src_uri_handler_init(gpointer g_iface, gpointer iface_data) { GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface; iface->get_type = gst_mythtv_src_uri_get_type; iface->get_protocols = gst_mythtv_src_uri_get_protocols; iface->get_uri = gst_mythtv_src_uri_get_uri; iface->set_uri = gst_mythtv_src_uri_set_uri; } void size_header_handler(void *userdata, const char *value) { GstMythtvSrc *src = GST_MYTHTV_SRC(userdata); GST_DEBUG_OBJECT(src, "content size = %lld bytes", src->content_size); }