gmyth: gst-plugins-mythtv/src/gstmythtvsrc.c.new@418267061bed

     1 /* vim: set sw=2: -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2; c-indent-level: 2 -*- */

     2 /* GStreamer MythTV Plug-in

     3  * Copyright (C) <2006> Rosfran Borges <rosfran.borges@indt.org.br>

     4  *

     5  * This library is free software; you can redistribute it and/or

     6  * modify it under the terms of the GNU Library General Public

     7  * License as published by the Free Software Foundation; either

     8  * version 2 of the License, or (at your option) any later version.

     9  *

    10  * This library is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13  * Library General Public License for more

    14  */

    16 #ifdef HAVE_CONFIG_H

    17 #include "config.h"

    18 #endif

    20 #include "gstmythtvsrc.h"

    21 #include "myth_file_transfer.h"

    22 #include "myth_livetv.h"

    24 #include <gmyth/gmyth_socket.h>

    25 #include <gmyth/gmyth_tvchain.h>

    27 #include <string.h>

    28 #include <unistd.h>

    30 GST_DEBUG_CATEGORY_STATIC (mythtvsrc_debug);

    31 #define GST_CAT_DEFAULT mythtvsrc_debug

    33 #define GST_MYTHTV_ID_NUM		1

    35 #define MYTHTV_VERSION_DEFAULT		30

    37 #define MYTHTV_TRANSFER_MAX_WAITS	100

    39 #define MYTHTV_TRANSFER_MAX_BUFFER	( 32*1024  )

    41 /* 4*1024 ??? */

    42 #define MAX_READ_SIZE                   ( 16*1024 )

    44 #define ENABLE_TIMING_POSITION		1

    46 /* stablish a maximum iteration value to the IS_RECORDING message */

    47 static guint wait_to_transfer = 0;

    49 static const GstElementDetails gst_mythtv_src_details =

    50 GST_ELEMENT_DETAILS ("MythTV client source",

    51     "Source/Network",

    52     "Control and receive data as a client over the network via raw socket connections using the MythTV protocol",

    53     "Rosfran Borges <rosfran.borges@indt.org.br>");

    55 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",

    56     GST_PAD_SRC,

    57     GST_PAD_ALWAYS,

    58     GST_STATIC_CAPS_ANY);

    60 static GstTask *update_size_task = NULL;

    62 static GStaticRecMutex update_size_mutex = G_STATIC_REC_MUTEX_INIT;

    64 enum

    65 {

    66   PROP_0,

    67   PROP_LOCATION,

    68   PROP_URI,

    69 #ifndef GST_DISABLE_GST_DEBUG

    70   PROP_MYTHTV_DBG,

    71 #endif

    72   PROP_MYTHTV_VERSION,

    73   PROP_MYTHTV_LIVE,

    74   PROP_MYTHTV_LIVEID,

    75   PROP_MYTHTV_LIVE_CHAINID

    76 };

    78 static void gst_mythtv_src_finalize (GObject * gobject);

    80 static GstFlowReturn gst_mythtv_src_create (GstBaseSrc * psrc,

    81     guint64 offset, guint size, GstBuffer ** outbuf);

    82 static gboolean gst_mythtv_src_start (GstBaseSrc * bsrc);

    83 static gboolean gst_mythtv_src_stop (GstBaseSrc * bsrc);

    84 static gboolean gst_mythtv_src_get_size (GstBaseSrc * bsrc, guint64 * size);

    85 static gboolean gst_mythtv_src_is_seekable( GstBaseSrc *base_src );

    87 static void gst_mythtv_src_set_property (GObject * object, guint prop_id,

    88     const GValue * value, GParamSpec * pspec);

    89 static void gst_mythtv_src_get_property (GObject * object, guint prop_id,

    90     GValue * value, GParamSpec * pspec);

    92 static void

    93 gst_mythtv_src_uri_handler_init (gpointer g_iface, gpointer iface_data);

    95 static gboolean

    96 gst_mythtv_src_handle_event (GstPad * pad, GstEvent * event);

    98   static void

    99 _urihandler_init (GType type)

   100 {

   101   static const GInterfaceInfo urihandler_info = {

   102     gst_mythtv_src_uri_handler_init,

   103     NULL,

   104     NULL

   105   };

   107   g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);

   109   GST_DEBUG_CATEGORY_INIT (mythtvsrc_debug, "mythtvsrc", 0,

   110       "MythTV src");

   111 }

   113 GST_BOILERPLATE_FULL (GstMythtvSrc, gst_mythtv_src, GstBaseSrc,

   114     GST_TYPE_BASE_SRC, _urihandler_init);

   116   static void

   117 gst_mythtv_src_base_init (gpointer g_class)

   118 {

   119   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);

   121   gst_element_class_add_pad_template (element_class,

   122       gst_static_pad_template_get (&srctemplate));

   124   gst_element_class_set_details (element_class, &gst_mythtv_src_details);

   125 }

   127   static void

   128 gst_mythtv_src_class_init (GstMythtvSrcClass * klass)

   129 {

   130   GObjectClass *gobject_class;

   131   GstBaseSrcClass *gstbasesrc_class;

   133   gobject_class = (GObjectClass *) klass;

   134   gstbasesrc_class = (GstBaseSrcClass *) klass;

   136   gobject_class->set_property = gst_mythtv_src_set_property;

   137   gobject_class->get_property = gst_mythtv_src_get_property;

   138   gobject_class->finalize = gst_mythtv_src_finalize;

   140   g_object_class_install_property

   141     (gobject_class, PROP_LOCATION,

   142      g_param_spec_string ("location", "Location",

   143        "The location. In the form:"

   144        "\n\t\t\tmyth://a.com/file.nuv"

   145        "\n\t\t\tmyth://a.com:23223/file.nuv "

   146        "\n\t\t\ta.com/file.nuv - default scheme 'myth'",

   147        "", G_PARAM_READWRITE));

   149   g_object_class_install_property

   150     (gobject_class, PROP_URI,

   151      g_param_spec_string ("uri", "Uri",

   152        "The location in form of a URI (deprecated; use location)",

   153        "", G_PARAM_READWRITE));

   155   g_object_class_install_property

   156     (gobject_class, PROP_MYTHTV_VERSION,

   157      g_param_spec_int ("mythtv-version", "mythtv-version",

   158        "Change Myth TV version",

   159        26, 30, 26, G_PARAM_READWRITE));

   161   g_object_class_install_property

   162     (gobject_class, PROP_MYTHTV_LIVEID,

   163      g_param_spec_int ("mythtv-live-id", "mythtv-live-id",

   164        "Change Myth TV version",

   165        0, 200, GST_MYTHTV_ID_NUM, G_PARAM_READWRITE));

   167   g_object_class_install_property

   168     (gobject_class, PROP_MYTHTV_LIVE_CHAINID,

   169      g_param_spec_string ("mythtv-live-chainid", "mythtv-live-chainid",

   170        "Sets the Myth TV chain ID (from TV Chain)",

   171        "", G_PARAM_READWRITE));

   173   g_object_class_install_property

   174     (gobject_class, PROP_MYTHTV_LIVE,

   175      g_param_spec_boolean ("mythtv-live", "mythtv-live",

   176        "Enable MythTV Live TV content streaming",

   177        FALSE, G_PARAM_READWRITE));

   179 #ifndef GST_DISABLE_GST_DEBUG

   180   g_object_class_install_property

   181     (gobject_class, PROP_MYTHTV_DBG,

   182      g_param_spec_boolean ("mythtv-debug", "mythtv-debug",

   183        "Enable MythTV debug messages",

   184        FALSE, G_PARAM_READWRITE));

   185 #endif

   187   gstbasesrc_class->start = gst_mythtv_src_start;

   188   gstbasesrc_class->stop = gst_mythtv_src_stop;

   189   gstbasesrc_class->get_size = gst_mythtv_src_get_size;

   190   gstbasesrc_class->is_seekable = gst_mythtv_src_is_seekable;

   192   gstbasesrc_class->create = gst_mythtv_src_create;

   194   GST_DEBUG_CATEGORY_INIT (mythtvsrc_debug, "mythtvsrc", 0,

   195       "MythTV Client Source");

   196 }

   198   static void

   199 gst_mythtv_src_init (GstMythtvSrc * this, GstMythtvSrcClass * g_class)

   200 {

   201   this->file_transfer = NULL;

   203   this->unique_setup = FALSE;

   205   this->mythtv_version = MYTHTV_VERSION_DEFAULT;

   207   this->bytes_read = 0;

   209   this->content_size = -1;

   210   this->read_offset = 0;

   212   this->live_tv = FALSE;

   214   this->user_agent = g_strdup ("mythtvsrc");

   215   this->mythtv_caps = NULL;

   217   gst_base_src_set_live ( GST_BASE_SRC( this ), TRUE );

   219   gst_pad_set_event_function (GST_BASE_SRC_PAD(GST_BASE_SRC(this)),

   220       GST_DEBUG_FUNCPTR (gst_mythtv_src_handle_event));

   222 }

   224   static void

   225 gst_mythtv_src_finalize (GObject * gobject)

   226 {

   227   GstMythtvSrc *this = GST_MYTHTV_SRC (gobject);

   229   g_free (this->user_agent);

   231   if (this->mythtv_caps) {

   232     gst_caps_unref (this->mythtv_caps);

   233     this->mythtv_caps = NULL;

   234   }

   236   if (this->file_transfer) {

   237     g_object_unref (this->file_transfer);

   238     this->file_transfer = NULL;

   239   }

   241   if (this->uri_name) {

   242     g_free (this->uri_name);

   243   }

   245   if (this->user_agent) {

   246     g_free (this->user_agent);

   247   }

   249   if ( update_size_task != NULL ) {

   251     if ( GST_TASK_STATE( update_size_task ) != GST_TASK_STOPPED )

   252     	gst_task_stop( update_size_task );

   254     gst_object_unref( update_size_task );

   256     update_size_task = NULL;

   258   }

   260   G_OBJECT_CLASS (parent_class)->finalize (gobject);

   261 }

   263 #if 0

   264   static guint

   265 do_seek( GstMythtvSrc *src, guint64 offset, guint size, GstBuffer *outbuf )

   266 {

   267   guint64 off_uint64 = myth_file_transfer_seek(src->file_transfer, offset, 1);

   269   g_print( "[%s] Call MythTV SEEK with offset %llu, got a new one %llu...\n", __FUNCTION__,

   270       offset, off_uint64 );

   272   return off_uint64;

   274 }

   275 #endif

   277   static guint

   278 do_read_request_response (GstMythtvSrc * src, guint64 offset, guint size, GstBuffer * outbuf)

   279 {

   280   guint read = 0;

   281   guint sizetoread = size; //GST_BUFFER_SIZE (outbuf);

   283   g_print( "[%s] Reading %d bytes...\n", __FUNCTION__, sizetoread );

   285   /* Loop sending the request:

   286    * Retry whilst authentication fails and we supply it. */

   288   ssize_t len = 0;

   290   //GST_OBJECT_LOCK(src);

   292   while ( sizetoread > 0 ) {

   294     len = myth_file_transfer_read( src->file_transfer,

   295 	GST_BUFFER_DATA (outbuf) + read, sizetoread, TRUE );

   297     if ( len > 0 ) {

   298       read += len;

   299       src->read_offset += read;

   300       sizetoread -= len;

   301     } else if ( len < 0 ) {

   302       goto done;

   303     }

   304     else if ( len == 0 ) {

   305       if ( src->live_tv == FALSE )

   306 	goto done;

   307       else

   308 	goto eos;

   310     }

   312     if ( len == sizetoread )

   313       break;

   315   }

   317   if ( read > 0 ) {

   318     src->bytes_read += read;

   320     GST_BUFFER_SIZE (outbuf) = read;

   321   } else if ( read <= 0 || len <= 0 ) {

   322     if ( src->live_tv == FALSE )

   323       goto eos;

   324     else

   325       goto done;

   326   }

   327   //GST_BUFFER_OFFSET (outbuf) = src->read_offset;

   329   g_print( "[%s]\tBYTES READ (actual) = %d, BYTES READ (cumulative) = %llu, "\

   330       "OFFSET = %llu, CONTENT SIZE = %llu.\n", __FUNCTION__, read, src->bytes_read,

   331       src->read_offset, src->content_size );

   333   //GST_OBJECT_UNLOCK(src);

   335   if ( len < 0 ) {

   336     read = len;

   337     if ( src->live_tv == FALSE )

   338       goto eos;

   339     else

   340       goto done;

   341   }

   343   if ( src->bytes_read < src->content_size )

   344     goto done;

   346 eos:

   347   //GST_OBJECT_UNLOCK(src);

   349   src->eos = TRUE;

   350 done:

   351   //GST_OBJECT_UNLOCK(src);

   353   return read;

   354 }

   356   static GstFlowReturn

   357 gst_mythtv_src_create ( GstBaseSrc * psrc, guint64 offset,

   358     guint size, GstBuffer **outbuf )

   359 {

   360   GstMythtvSrc *src;

   361   GstFlowReturn ret = GST_FLOW_OK;

   362   guint read = 0;

   364   src = GST_MYTHTV_SRC (psrc);

   366   //src->do_start = FALSE;

   367   src->do_start = FALSE;

   368   gst_task_join ( update_size_task );

   370   g_print( "[%s]\tBUFFER OFFSET = %llu, BUFFER SIZE = %d.\n", __FUNCTION__, offset,

   371       size );

   373   /* The caller should know the number of bytes and not read beyond EOS. */

   374   //if (G_UNLIKELY (src->eos))

   375   //  goto eos;

   376   //g_static_rec_mutex_lock( &update_size_mutex );

   378   /* Create the buffer. */

   379   ret = gst_pad_alloc_buffer ( GST_BASE_SRC_PAD (GST_BASE_SRC (psrc)),

   380       //      GST_BUFFER_OFFSET_NONE, GST_BASE_SRC (psrc)->blocksize,

   381       offset, size,

   382       src->mythtv_caps ? src->mythtv_caps :

   383       GST_PAD_CAPS (GST_BASE_SRC_PAD (GST_BASE_SRC (psrc))), outbuf );

   385   //if (G_UNLIKELY (ret == GST_FLOW_UNEXPECTED))

   386   //  goto eos;

   388   if (G_UNLIKELY (ret != GST_FLOW_OK))

   389     goto eos;

   391   if (G_UNLIKELY (ret == GST_FLOW_ERROR))

   392     goto read_error;

   394   read = do_read_request_response ( src, offset, size, *outbuf );

   396   //g_static_rec_mutex_unlock( &update_size_mutex );

   398   src->do_start = TRUE;

   399   gst_task_start ( update_size_task );

   401 #if 0

   402   g_static_rec_mutex_lock( &update_size_mutex );

   403   src->do_start = FALSE;

   404   g_static_rec_mutex_unlock( &update_size_mutex );

   405   GST_TASK_SIGNAL( update_size_task );

   406 #endif

   408   //g_static_rec_mutex_unlock( &update_size_mutex );

   410 #if 0

   411 #if ENABLE_TIMING_POSITION == 1

   412   guint64 size_tmp = 0;

   413   if (src->live_tv == TRUE) {

   414     //g_usleep( 1000 );

   415 get_file_pos:

   416     //g_usleep( 100 );

   417     size_tmp = myth_file_transfer_get_file_position( src->file_transfer );

   418     if ( size_tmp > ( src->content_size + MYTHTV_TRANSFER_MAX_BUFFER ) )

   419       src->content_size = size_tmp;

   420     else

   421       goto get_file_pos;

   422     g_print( "\t[%s]\tGET_POSITION: file_position = %llu\n",

   423 	__FUNCTION__, size_tmp);

   425   }

   426 #endif

   427 #endif

   429   //if (G_UNLIKELY (read < 0))

   430   //  goto read_error;

   432   if (G_UNLIKELY(src->eos))

   433     goto eos;

   434   else

   435     goto done;

   437 done:

   438   return ret;

   439 eos:

   440 #if 0

   441 #if ENABLE_TIMING_POSITION == 1

   442   if ( src->live_tv == TRUE ) {

   443     //g_usleep( 1000 );

   444     guint64 size_tmp = 0;

   445 get_file_pos_eos:

   446     //g_usleep( 100 );

   447     size_tmp = myth_file_transfer_get_file_position( src->file_transfer );

   448     if ( size_tmp > ( src->content_size + MYTHTV_TRANSFER_MAX_BUFFER ) )

   449       src->content_size = size_tmp;

   450     else

   451       goto get_file_pos_eos;

   452     g_print( "\t[%s]\tGET_POSITION: file_position = %llu\n",

   453 	__FUNCTION__, size_tmp);

   454     goto done;

   455   } else

   456 #endif

   457 #endif

   458   {

   459     GST_DEBUG_OBJECT (src, "EOS reached");

   460     return GST_FLOW_UNEXPECTED;

   461   }

   462   /* ERRORS */

   463 read_error:

   464   {

   465     GST_ELEMENT_ERROR (src, RESOURCE, READ,

   466 	(NULL), ("Could not read any bytes (%i, %s)", read,

   467 	  src->uri_name));

   468     return GST_FLOW_ERROR;

   469   }

   470   #if 0

   471 need_pause:

   472   {

   473     const gchar *reason = gst_flow_get_name (ret);

   475     GST_DEBUG_OBJECT (src, "pausing task, reason %s", reason);

   476     return GST_FLOW_UNEXPECTED;

   477   }

   478   #endif

   480 }

   482 #if 0

   483 /* The following two charset mangling functions were copied from gnomevfssrc.

   484  * Preserve them under the unverified assumption that they do something vaguely

   485  * worthwhile.

   486  */

   487   static char *

   488 unicodify (const char *str, int len, ...)

   489 {

   490   char *ret = NULL, *cset;

   491   va_list args;

   492   gsize bytes_read, bytes_written;

   494   if (g_utf8_validate (str, len, NULL))

   495     return g_strndup (str, len >= 0 ? len : strlen (str));

   497   va_start (args, len);

   498   while ((cset = va_arg (args, char *)) != NULL)

   499   {

   500     if (!strcmp (cset, "locale"))

   501       ret = g_locale_to_utf8 (str, len, &bytes_read, &bytes_written, NULL);

   502     else

   503       ret = g_convert (str, len, "UTF-8", cset,

   504 	  &bytes_read, &bytes_written, NULL);

   505     if (ret)

   506       break;

   507   }

   508   va_end (args);

   510   return ret;

   511 }

   513   static char *

   514 gst_mythtv_src_unicodify (const char *str)

   515 {

   516   return unicodify (str, -1, "locale", "ISO-8859-1", NULL);

   517 }

   518 #endif

   520 void

   521 update_size_func( void *mythtv_data )

   522 {

   523   GstMythtvSrc *src;

   525   g_return_if_fail( mythtv_data != NULL );

   527   src = GST_MYTHTV_SRC ( mythtv_data );

   528   if ( src->do_start ) {

   529  #if ENABLE_TIMING_POSITION == 1

   530   guint64 size_tmp = 0;

   531   if (src->live_tv == TRUE) {

   532 get_file_pos:

   533     //g_usleep( 50 );

   534     size_tmp = myth_file_transfer_get_file_position( src->file_transfer );

   535     if ( size_tmp > ( src->content_size + MYTHTV_TRANSFER_MAX_BUFFER ) )

   536       src->content_size = size_tmp;

   537     else

   538       goto get_file_pos;

   539     g_print( "\t[%s]\tGET_POSITION: file_position = %llu\n",

   540 	__FUNCTION__, size_tmp );

   541   }

   542 #endif

   543 }

   544   gst_task_pause( update_size_task );

   545  // src->do_start = FALSE;

   546   //GST_TASK_SIGNAL( update_size_task );

   548 }

   550 /* create a socket for connecting to remote server */

   551   static gboolean

   552 gst_mythtv_src_start ( GstBaseSrc * bsrc )

   553 {

   554   GstMythtvSrc *src = GST_MYTHTV_SRC (bsrc);

   556   GString *chain_id_local = NULL;

   558   gboolean ret = TRUE;

   559 #if 0

   560   if (src->live_tv == TRUE && src->file_transfer != NULL) {

   561     guint64 size_tmp = myth_file_transfer_get_file_position( src->file_transfer );

   562     if (size_tmp > src->content_size)

   563       src->content_size = size_tmp;

   564     g_print( "\t[%s]\tGET_POSITION: file_position = %llu\n",

   565 	__FUNCTION__, size_tmp);

   566   }

   567 #endif

   568   if (src->unique_setup == FALSE) {

   569     src->unique_setup = TRUE;

   570   } else {

   571     goto done;

   572   }

   574   //GST_OBJECT_LOCK(src);

   576   if ( src->live_tv ) {

   577     src->spawn_livetv = myth_livetv_new( );

   578     if ( myth_livetv_setup( src->spawn_livetv ) == FALSE ) {

   579     	ret = FALSE;

   580     	goto init_failed;

   581     }

   582     /* set up the uri variable */

   583     src->uri_name = g_strdup( src->spawn_livetv->proginfo->pathname->str );

   584     chain_id_local = gmyth_tvchain_get_id( src->spawn_livetv->tvchain );

   585     if ( chain_id_local != NULL ) {

   586       src->live_chain_id = g_strdup( chain_id_local->str );

   587       g_print( "\t[%s]\tLocal chain ID = %s.\n", __FUNCTION__, src->live_chain_id );

   588     }

   589     src->live_tv_id = src->spawn_livetv->remote_encoder->recorder_num;

   590     g_print ( "[%s] LiveTV id = %d, URI path = %s.\n", __FUNCTION__, src->live_tv_id, src->uri_name );

   591   }

   593   src->file_transfer = myth_file_transfer_new( src->live_tv_id,

   594       g_string_new( src->uri_name ), -1, src->mythtv_version );

   596   if ( src->file_transfer == NULL ) {

   597     //GST_OBJECT_UNLOCK(src);

   599     goto init_failed;

   600   }

   602   if ( src->live_tv ) {

   603     g_print ( "[%s] GST MYTHTVSRC: live_chain_id = %s\n", __FUNCTION__, src->live_chain_id );

   604     /* sets the MythSocket to the FileTransfer */

   605     //ret = myth_file_transfer_livetv_setup( &(src->file_transfer), src->spawn_livetv->remote_encoder->myth_socket );

   606   }

   607   /* sets the Playback monitor connection */

   608   ret = myth_file_transfer_playback_setup( &(src->file_transfer), src->live_tv );

   610   if ( src->live_tv == TRUE && ret == TRUE ) {

   611     /* loop finished, set the max tries variable to zero again... */

   612     wait_to_transfer = 0;

   614     while ( wait_to_transfer++ < MYTHTV_TRANSFER_MAX_WAITS && ( myth_file_transfer_is_recording( src->file_transfer ) == FALSE

   615 	  /*|| ( myth_file_transfer_get_file_position( src->file_transfer ) < ( src->content_size + 327680 ) )*/ ) )

   616       g_usleep( 100 );

   617   }

   619   /* sets the FileTransfer instance connection (video/audio download) */

   620   ret = myth_file_transfer_setup( &(src->file_transfer), src->live_tv );

   622   if ( ret == FALSE ) {

   623     //GST_OBJECT_UNLOCK(src);

   624 #ifndef GST_DISABLE_GST_DEBUG

   625     if ( src->mythtv_msgs_dbg )

   626       g_printerr( "MythTV FileTransfer request failed when setting up socket connection!\n" );

   627 #endif

   628     goto begin_req_failed;

   629   }

   631   src->content_size = src->file_transfer->filesize;

   633   //GST_OBJECT_UNLOCK(src);

   635   update_size_task = gst_task_create( update_size_func, src );

   637   gst_task_set_lock( update_size_task, &update_size_mutex );

   639   g_print( "[%s] Update Size task = %s\n", __FUNCTION__, gst_task_start( update_size_task ) &&

   640   		GST_TASK_STATE( update_size_task ) == GST_TASK_STARTED ? "OK !" : "ERROR!!!" );

   642   src->do_start = TRUE;

   644 #if 0

   645   const char *str_value;

   646   gint gint_value;

   648   str_value = ne_get_response_header (src->request, "myth-metaint");

   649   if (str_value) {

   650     if ( sscanf (str_value, "%d", &gint_value) == 1 ) {

   651       if (src->myth_caps) {

   652 	gst_caps_unref (src->myth_caps);

   653 	src->myth_caps = NULL;

   654       }

   655       src->myth_metaint = gint_value;

   656 #endif

   657       //src->mythtv_caps = gst_caps_new_simple ("application/x-gst_ff-nuv", NULL);

   658       //   }

   659       // }

   660 done:

   661       return TRUE;

   663       /* ERRORS */

   664 init_failed:

   665       {

   666       	if (src->spawn_livetv != NULL )

   667 	  g_object_unref( src->spawn_livetv );

   669 	GST_ELEMENT_ERROR (src, LIBRARY, INIT,

   670 	    (NULL), ("Could not initialize MythTV library (%i, %s)", ret, src->uri_name));

   671 	return FALSE;

   672       }

   673 begin_req_failed:

   674       {

   675 	GST_ELEMENT_ERROR (src, LIBRARY, INIT,

   676 	    (NULL), ("Could not begin request sent to MythTV server (%i, %s)", ret, src->uri_name));

   677 	return FALSE;

   678       }

   679 }

   681 #if 0

   682 static gboolean

   683 gst_mythtv_src_get_size (GstBaseSrc * bsrc, guint64 * size)

   684 {

   685   GstMythtvSrc *src;

   686   gboolean ret = FALSE;

   688   src = GST_MYTHTV_SRC (bsrc);

   690   g_static_rec_mutex_lock( &update_size_mutex );

   691   src->do_start = FALSE;

   692   g_static_rec_mutex_unlock( &update_size_mutex );

   693   GST_TASK_SIGNAL( update_size_task );

   696   while (1) {

   698     g_static_rec_mutex_lock( &update_size_mutex );

   699     if ( !src->do_start ) {

   701       g_print( "[%s] GET SIZE: do_start? == %s\n", __FUNCTION__, src->do_start ? "YES" : "NO" );

   703       GST_TASK_WAIT( update_size_task );

   704     } else {

   705       if (src->content_size <= 0) {

   706 	g_static_rec_mutex_unlock( &update_size_mutex );

   707 	goto done;

   708       }

   710       *size = src->content_size;

   711       src->do_start = FALSE;

   713       g_static_rec_mutex_unlock( &update_size_mutex );

   715       break;

   716     }

   717     g_static_rec_mutex_unlock( &update_size_mutex );

   719   } // while (1)

   721 done:

   722   return ret;

   724 }

   725 #endif

   727 static gboolean

   728 gst_mythtv_src_get_size (GstBaseSrc * bsrc, guint64 * size)

   729 {

   730   GstMythtvSrc *src;

   731   gboolean ret = TRUE;

   733   src = GST_MYTHTV_SRC (bsrc);

   735   if (src->content_size <= 0)

   736     ret= FALSE;

   738   *size = src->content_size;

   740   return ret;

   742 }

   743 /* close the socket and associated resources

   744  * used both to recover from errors and go to NULL state */

   745   static gboolean

   746 gst_mythtv_src_stop (GstBaseSrc * bsrc)

   747 {

   748   GstMythtvSrc *src;

   750   src = GST_MYTHTV_SRC (bsrc);

   752   if (src->uri_name) {

   753     g_free (src->uri_name);

   754     src->uri_name = NULL;

   755   }

   757   if (src->mythtv_caps) {

   758     gst_caps_unref (src->mythtv_caps);

   759     src->mythtv_caps = NULL;

   760   }

   762   src->eos = FALSE;

   764   return TRUE;

   765 }

   767   static gboolean

   768 gst_mythtv_src_handle_event (GstPad * pad, GstEvent * event)

   769 {

   770   GstMythtvSrc *src = GST_MYTHTV_SRC (GST_PAD_PARENT (pad));

   772   switch (GST_EVENT_TYPE (event)) {

   773     case GST_EVENT_FLUSH_START:

   774       src->eos = FALSE;

   775       break;

   776       //return TRUE;

   777 #if 0

   778 case GST_EVENT_FLUSH_STOP:

   779       src->do_start = TRUE;

   780       src->eos = FALSE;

   781       gst_element_set_state (GST_ELEMENT(src), GST_STATE_NULL);

   782       //gst_element_set_locked_state (GST_ELEMENT(src), TRUE);

   783       break;

   784 #endif

   785     case GST_EVENT_SEEK:

   786       {

   787 	gdouble rate;

   788 	//gboolean update = TRUE;

   789 	GstFormat format;

   790 	GstSeekType cur_type, stop_type;

   791 	GstSeekFlags flags;

   792 	gint64 cur = 0, stop = 0;

   793 	gst_event_parse_seek ( event, &rate, &format,

   794 	    &flags, &cur_type, &cur,

   795 	    &stop_type, &stop );

   797 	g_print( "[%s] Got EVENT_SEEK.\n", __FUNCTION__ );

   798 	if ( !( flags & GST_SEEK_FLAG_FLUSH ) ) {

   799 	  g_print( "[%s] Could get the FLAG_FLUSH message.\n", __FUNCTION__ );

   800 	}

   801 	//gboolean ret = gst_event_parse_new_segment ( event,

   802 	//    &update, &rate, &format, &start, &stop,

   803 	//    &position );

   804 	//GstFlowReturn flow_ret = gst_mythtv_src_create (GST_BASE_SRC( GST_PAD_PARENT( psrc ) ),

   805 	//			cur, stop - cur + 1, GstBuffer)

   807       }

   808     default:

   809       return gst_pad_event_default (pad, event);

   810   }

   812   return gst_pad_event_default (pad, event);

   813 }

   815   static gboolean

   816 gst_mythtv_src_is_seekable( GstBaseSrc *base_src )

   817 {

   818   return TRUE;

   819 }

   821   static void

   822 gst_mythtv_src_set_property (GObject * object, guint prop_id,

   823     const GValue * value, GParamSpec * pspec)

   824 {

   825   GstMythtvSrc *mythtvsrc = GST_MYTHTV_SRC (object);

   827   GST_OBJECT_LOCK (mythtvsrc);

   828   switch (prop_id) {

   829     case PROP_URI:

   830     case PROP_LOCATION:

   831       {

   832 	if (!g_value_get_string (value)) {

   833 	  GST_WARNING ("location property cannot be NULL");

   834 	  goto done;

   835 	}

   837 	if (mythtvsrc->uri_name != NULL) {

   838 	  g_free (mythtvsrc->uri_name);

   839 	  mythtvsrc->uri_name = NULL;

   840 	}

   841 	mythtvsrc->uri_name = g_value_dup_string (value);

   843 	break;

   844       }

   845 #ifndef GST_DISABLE_GST_DEBUG

   846     case PROP_MYTHTV_DBG:

   847       {

   848 	mythtvsrc->mythtv_msgs_dbg = g_value_get_boolean (value);

   849 	break;

   850       }

   851 #endif

   852     case PROP_MYTHTV_VERSION:

   853       {

   854 	mythtvsrc->mythtv_version = g_value_get_int (value);

   855 	break;

   856       }

   857     case PROP_MYTHTV_LIVEID:

   858       {

   859 	mythtvsrc->live_tv_id = g_value_get_int (value);

   860 	break;

   861       }

   862     case PROP_MYTHTV_LIVE:

   863       {

   864 	mythtvsrc->live_tv = g_value_get_boolean (value);

   865 	break;

   866       }

   867     case PROP_MYTHTV_LIVE_CHAINID:

   868       {

   869 	if (!g_value_get_string (value)) {

   870 	  GST_WARNING ("MythTV Live chainid property cannot be NULL");

   871 	  goto done;

   872 	}

   874 	if (mythtvsrc->live_chain_id != NULL) {

   875 	  g_free (mythtvsrc->live_chain_id);

   876 	  mythtvsrc->live_chain_id = NULL;

   877 	}

   878 	mythtvsrc->live_chain_id = g_value_dup_string (value);

   880 	break;

   881       }

   883     default:

   884       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

   885       break;

   886   }

   887   GST_OBJECT_UNLOCK (mythtvsrc);

   888 done:

   889   return;

   890 }

   892   static void

   893 gst_mythtv_src_get_property (GObject * object, guint prop_id,

   894     GValue * value, GParamSpec * pspec)

   895 {

   896   GstMythtvSrc *mythtvsrc = GST_MYTHTV_SRC (object);

   898   GST_OBJECT_LOCK (mythtvsrc);

   899   switch (prop_id) {

   900     case PROP_URI:

   901     case PROP_LOCATION:

   902       {

   903 	gchar *str = g_strdup( "" );

   905 	if ( mythtvsrc->uri_name == NULL ) {

   906 	  g_free (mythtvsrc->uri_name);

   907 	  mythtvsrc->uri_name = NULL;

   908 	} else {

   909 	  str = g_strdup( mythtvsrc->uri_name );

   910 	}

   911 	g_value_set_string ( value, str );

   912 	break;

   913       }

   914 #ifndef GST_DISABLE_GST_DEBUG

   915     case PROP_MYTHTV_DBG:

   916       g_value_set_boolean ( value, mythtvsrc->mythtv_msgs_dbg );

   917       break;

   918 #endif

   919     case PROP_MYTHTV_VERSION:

   920       {

   921 	g_value_set_int ( value, mythtvsrc->mythtv_version );

   922 	break;

   923       }

   924     case PROP_MYTHTV_LIVEID:

   925       {

   926 	g_value_set_int ( value, mythtvsrc->live_tv_id );

   927 	break;

   928       }

   929     case PROP_MYTHTV_LIVE:

   930       g_value_set_boolean ( value, mythtvsrc->live_tv );

   931       break;

   932     case PROP_MYTHTV_LIVE_CHAINID:

   933       {

   934 	gchar *str = g_strdup( "" );

   936 	if ( mythtvsrc->live_chain_id == NULL ) {

   937 	  g_free (mythtvsrc->live_chain_id);

   938 	  mythtvsrc->live_chain_id = NULL;

   939 	} else {

   940 	  str = g_strdup( mythtvsrc->live_chain_id );

   941 	}

   942 	g_value_set_string ( value, str );

   943 	break;

   944       }

   945     default:

   946       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

   947       break;

   948   }

   949   GST_OBJECT_UNLOCK (mythtvsrc);

   950 }

   952 /* entry point to initialize the plug-in

   953  * initialize the plug-in itself

   954  * register the element factories and pad templates

   955  * register the features

   956  */

   957   static gboolean

   958 plugin_init (GstPlugin * plugin)

   959 {

   960   return gst_element_register (plugin, "mythtvsrc", GST_RANK_NONE,

   961       GST_TYPE_MYTHTV_SRC);

   962 }

   964 /* this is the structure that gst-register looks for

   965  * so keep the name plugin_desc, or you cannot get your plug-in registered */

   966 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

   967     GST_VERSION_MINOR,

   968     "mythtv",

   969     "lib MythTV src",

   970     plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")

   973 /*** GSTURIHANDLER INTERFACE *************************************************/

   974   static guint

   975 gst_mythtv_src_uri_get_type (void)

   976 {

   977   return GST_URI_SRC;

   978 }

   980   static gchar **

   981 gst_mythtv_src_uri_get_protocols (void)

   982 {

   983   static gchar *protocols[] = { "myth", "myths", NULL };

   985   return protocols;

   986 }

   988   static const gchar *

   989 gst_mythtv_src_uri_get_uri (GstURIHandler * handler)

   990 {

   991   GstMythtvSrc *src = GST_MYTHTV_SRC (handler);

   993   return src->uri_name;

   994 }

   996   static gboolean

   997 gst_mythtv_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)

   998 {

   999   GstMythtvSrc *src = GST_MYTHTV_SRC (handler);

  1001   gchar *protocol;

  1003   protocol = gst_uri_get_protocol (uri);

  1004   if ((strcmp (protocol, "myth") != 0) && (strcmp (protocol, "myths") != 0)) {

  1005     g_free (protocol);

  1006     return FALSE;

  1007   }

  1008   g_free (protocol);

  1009   g_object_set (src, "location", uri, NULL);

  1011   return TRUE;

  1012 }

  1014   static void

  1015 gst_mythtv_src_uri_handler_init (gpointer g_iface, gpointer iface_data)

  1016 {

  1017   GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;

  1019   iface->get_type = gst_mythtv_src_uri_get_type;

  1020   iface->get_protocols = gst_mythtv_src_uri_get_protocols;

  1021   iface->get_uri = gst_mythtv_src_uri_get_uri;

  1022   iface->set_uri = gst_mythtv_src_uri_set_uri;

  1023 }

  1025   void

  1026 size_header_handler (void *userdata, const char *value)

  1027 {

  1028   GstMythtvSrc *src = GST_MYTHTV_SRC (userdata);

  1030   //src->content_size = g_ascii_strtoull (value, NULL, 10);

  1032   GST_DEBUG_OBJECT (src, "content size = %lld bytes", src->content_size);

  1033 }

author	rosfran
	Mon Dec 04 23:13:44 2006 +0000 (2006-12-04)
branch	trunk
changeset 193	418267061bed
parent 10	00c73ffe40ad
permissions	-rwxr-xr-x