add broadcaster

CVS patchset: 4857
CVS date: 2003/05/15 20:23:16

2 files changed, 468 insertions, 1 deletions

diff --git a/src/demuxers/Makefile.am b/src/demuxers/Makefile.am
index 001e3b035..a76069964 100644
--- a/src/demuxers/Makefile.am
+++ b/src/demuxers/Makefile.am
@@ -41,7 +41,8 @@ lib_LTLIBRARIES = $(ogg_module) $(asf_module) $(mng_module) $(image_module) \
 	xineplug_dmx_real.la \
 	xineplug_dmx_rawdv.la \
 	xineplug_dmx_pva.la \
-	xineplug_dmx_yuv_frames.la
+	xineplug_dmx_yuv_frames.la \
+	xineplug_dmx_slave.la
 
 xineplug_dmx_ogg_la_SOURCES = demux_ogg.c
 xineplug_dmx_ogg_la_LIBADD = $(OGG_LIBS) $(VORBIS_LIBS) $(THEORA_LIBS) $(XINE_LIB)
@@ -123,6 +124,10 @@ xineplug_dmx_yuv_frames_la_SOURCES = demux_yuv_frames.c
 xineplug_dmx_yuv_frames_la_LIBADD = $(XINE_LIB)
 xineplug_dmx_yuv_frames_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
 
+xineplug_dmx_slave_la_SOURCES = demux_slave.c
+xineplug_dmx_slave_la_LIBADD = $(XINELIB)
+xineplug_dmx_slave_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
+
 xineplug_dmx_image_la_SOURCES = demux_image.c
 xineplug_dmx_image_la_LIBADD = $(XINE_LIB)
 xineplug_dmx_image_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
diff --git a/src/demuxers/demux_slave.c b/src/demuxers/demux_slave.c
new file mode 100644
index 000000000..8a0152367
--- /dev/null
+++ b/src/demuxers/demux_slave.c
@@ -0,0 +1,462 @@
+/* 
+ * Copyright (C) 2000-2003 the xine project
+ * May 2003 - Miguel Freitas
+ * This plugin was sponsored by 1Control
+ * 
+ * This file is part of xine, a free video player.
+ * 
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * xine 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ *
+ * $Id: demux_slave.c,v 1.2 2003/05/15 20:23:16 miguelfreitas Exp $
+ *
+ * demuxer for slave "protocol"
+ * master xine must be started with XINE_PARAM_BROADCASTER_PORT set, that is,
+ * 'xine --broadcast-port <port_number>'
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "compat.h"
+#include "demux.h"
+
+#define SCRATCH_SIZE        1024
+#define CHECK_VPTS_INTERVAL 2*90000
+#define NETWORK_PREBUFFER   90000
+
+typedef struct {  
+
+  demux_plugin_t      demux_plugin;
+
+  xine_stream_t       *stream;
+
+  config_values_t     *config;
+
+  fifo_buffer_t       *video_fifo;
+  fifo_buffer_t       *audio_fifo;
+
+  input_plugin_t      *input;
+
+  int64_t              last_vpts;
+  int                  send_newpts;
+  int                  status;
+  
+                        /* additional decoder flags and other dec-spec. stuff */
+  uint32_t             decoder_info[BUF_NUM_DEC_INFO];
+                        /* pointers to dec-spec. stuff */
+  void                 *decoder_info_ptr[BUF_NUM_DEC_INFO];
+  xine_list_t          *dec_infos;   /* dec-spec. stuff */
+  
+  uint8_t              scratch[SCRATCH_SIZE+1];
+  int                  scratch_used;
+      
+} demux_slave_t ;
+
+typedef struct {
+
+  demux_class_t     demux_class;
+
+  /* class-wide, global variables here */
+
+  xine_t           *xine;
+  config_values_t  *config;
+} demux_slave_class_t;
+
+
+#define MAX_COMMAND_SIZE 20
+
+static int demux_slave_next (demux_slave_t *this) {
+  buf_element_t *buf;
+  int n, i;
+  char fifo_name[11];
+  uint8_t *p, *s;
+  int64_t curvpts;
+  
+  /* fill the scratch buffer */
+  n = this->input->read(this->input, &this->scratch[this->scratch_used],
+                        SCRATCH_SIZE - this->scratch_used);
+  this->scratch_used += n;
+  this->scratch[this->scratch_used] = '\0';
+
+  if( !n ) {
+    printf("demux_slave: connection closed\n");
+    this->status = DEMUX_FINISHED;
+    return 0;
+  }
+    
+  p = strchr(this->scratch,'\n');
+  s = strchr(this->scratch,' ');
+
+  if( !s || s > p )
+    s = p;
+    
+  if( !p || !s || (s-this->scratch+1) > MAX_COMMAND_SIZE ) {
+    printf("demux_slave: protocol error\n");
+    this->status = DEMUX_FINISHED;
+    return 0;
+  }
+  
+  *s++ = '\0';
+  p++;
+    
+  if( !strcmp(this->scratch,"buffer") ) {
+    int32_t    size ;     /* size of _content_                                     */
+    uint32_t   type;
+    int64_t    pts;       /* presentation time stamp, used for a/v sync            */
+    int64_t    disc_off;  /* discontinuity offset                                  */
+    uint32_t   decoder_flags; /* stuff like keyframe, is_header ... see below      */
+    
+    if( sscanf(s,"fifo=%10s size=%d type=%u pts=%lld disc=%lld flags=%u",
+               fifo_name, &size, &type, &pts, &disc_off, &decoder_flags) != 6 ) {
+      printf("demux_slave: 'buffer' command error\n");
+      this->status = DEMUX_FINISHED;
+      return 0;
+    }
+
+    if( type == BUF_CONTROL_NEWPTS ) {
+      this->send_newpts = 0;
+      this->last_vpts = 0;
+    }
+      
+    /* if we join an already existing broadcaster we must take care
+     * of the initial pts.
+     */
+    if( pts && this->send_newpts ) {
+      xine_demux_control_newpts( this->stream, pts, 0 );
+      this->send_newpts = 0;
+    }
+    
+    /* check if we are not late on playback.
+     * that might happen if user hits "pause" on the master, for example.
+     */
+    if( pts && 
+        (curvpts = this->stream->xine->clock->get_current_time(this->stream->xine->clock)) >
+        (this->last_vpts + CHECK_VPTS_INTERVAL) ) {
+      if( this->last_vpts &&
+          pts - (NETWORK_PREBUFFER/2) +
+          this->stream->metronom->get_option(this->stream->metronom, METRONOM_VPTS_OFFSET) <
+          curvpts ) {
+        if (this->stream->xine->verbosity >= XINE_VERBOSITY_LOG)
+          printf("demux_slave: we are running late, forcing newpts.\n");
+        xine_demux_control_newpts( this->stream, pts - NETWORK_PREBUFFER, 0 );
+      }
+      this->last_vpts = curvpts;  
+    }
+    
+      
+    if( !strcmp(fifo_name,"video") || !this->audio_fifo )
+      buf = this->video_fifo->buffer_pool_alloc(this->video_fifo);
+    else 
+      buf = this->audio_fifo->buffer_pool_alloc(this->audio_fifo);
+
+    /* copy data to buf, either from stratch or network */
+    n = this->scratch_used - (p-this->scratch);
+    if( n > size )
+      n = size;
+    if( n )
+      memcpy(buf->content, p, n);
+    if( n < size )
+      this->input->read(this->input, &buf->content[n], size-n);
+    
+    p += n;
+    n = this->scratch_used - (p-this->scratch);
+    if( n )
+      memmove(this->scratch, p, n);
+    this->scratch_used = n;
+    
+    /* populate our buf */
+    buf->size = size;
+    buf->type = type;
+    buf->pts = pts;
+    buf->disc_off = disc_off;
+    buf->decoder_flags = decoder_flags;
+
+    /* set decoder info */
+    for( i = 0; i < BUF_NUM_DEC_INFO; i++ ) {
+      buf->decoder_info[i] = this->decoder_info[i];  
+      buf->decoder_info_ptr[i] = this->decoder_info_ptr[i];  
+    }
+    memset(this->decoder_info, 0, sizeof(this->decoder_info));
+    memset(this->decoder_info_ptr, 0, sizeof(this->decoder_info_ptr));
+  
+    if( !strcmp(fifo_name,"video") )
+      this->video_fifo->put(this->video_fifo, buf);
+    else if (this->audio_fifo)
+      this->audio_fifo->put(this->audio_fifo, buf);
+    else
+      buf->free_buffer(buf);
+  
+  } else if( !strcmp(this->scratch,"decoder_info") ) {
+    
+    uint32_t decoder_info;
+    int has_data;
+    int size;
+    
+    if( sscanf(s,"index=%d decoder_info=%u has_data=%d",
+               &i, &decoder_info, &has_data) != 3 ||
+               i < 0 || i > BUF_NUM_DEC_INFO) {
+      printf("demux_slave: 'decoder_info' command error\n");
+      this->status = DEMUX_FINISHED;
+      return 0;
+    }
+    
+    this->decoder_info[i] = decoder_info;
+    
+    size = (has_data) ? decoder_info : 0;
+
+    if( size ) {
+      this->decoder_info_ptr[i] = malloc(size);
+      xine_list_append_content(this->dec_infos, this->decoder_info_ptr[i]);
+    }
+    
+    n = this->scratch_used - (p-this->scratch);
+    if( n > size )
+      n = size;
+    if( n )
+      memcpy(this->decoder_info_ptr[i], p, n);
+    if( n < size )
+      this->input->read(this->input, (char *)this->decoder_info_ptr[i]+n, size-n);
+    
+    p += n;
+    n = this->scratch_used - (p-this->scratch);
+    if( n )
+      memmove(this->scratch, p, n);
+    this->scratch_used = n;
+    
+
+  } else if( !strcmp(this->scratch,"flush_engine") ) {
+    
+    xine_demux_flush_engine( this->stream );
+    n = this->scratch_used - (p-this->scratch);
+    if( n )
+      memmove(this->scratch, p, n);
+    this->scratch_used = n;
+    
+  } else {
+    printf("demux_slave: unknown command '%s'\n", this->scratch);
+    n = this->scratch_used - (p-this->scratch);
+    if( n )
+      memmove(this->scratch, p, n);
+    this->scratch_used = n;
+  }
+    
+  return 1;
+}
+
+static int demux_slave_send_chunk (demux_plugin_t *this_gen) {
+
+  demux_slave_t *this = (demux_slave_t *) this_gen;
+
+  demux_slave_next(this);
+
+  return this->status;
+}
+
+static int demux_slave_get_status (demux_plugin_t *this_gen) {
+  demux_slave_t *this = (demux_slave_t *) this_gen;
+
+  return this->status;
+}
+
+
+static void demux_slave_send_headers (demux_plugin_t *this_gen) {
+
+  demux_slave_t *this = (demux_slave_t *) this_gen;
+
+  this->video_fifo  = this->stream->video_fifo;
+  this->audio_fifo  = this->stream->audio_fifo;
+
+  xine_demux_control_start(this->stream);
+
+  this->status = DEMUX_OK;
+
+  this->stream->stream_info[XINE_STREAM_INFO_HAS_VIDEO] = 1;
+  this->stream->stream_info[XINE_STREAM_INFO_HAS_AUDIO] = 1;
+
+  this->last_vpts = 0;
+  this->send_newpts = 1;
+}
+
+static int demux_slave_seek (demux_plugin_t *this_gen,
+				  off_t start_pos, int start_time) {
+
+  demux_slave_t *this = (demux_slave_t *) this_gen;
+
+  return this->status;
+}
+
+static void demux_slave_dispose (demux_plugin_t *this_gen) {
+  demux_slave_t *this = (demux_slave_t *) this_gen;
+  void *data;
+  
+  /* free all decoder information */
+  data = xine_list_first_content (this->dec_infos);
+  while (data) {
+    free(data);
+    xine_list_delete_current (this->dec_infos);
+    if( this->dec_infos->cur )
+      data = this->dec_infos->cur->content;
+    else
+      data = NULL;
+  }
+  xine_list_free(this->dec_infos);
+
+  free (this);
+}
+
+static int demux_slave_get_stream_length(demux_plugin_t *this_gen) {
+  return 0 ; /*FIXME: implement */
+}
+
+static uint32_t demux_slave_get_capabilities(demux_plugin_t *this_gen) {
+  return DEMUX_CAP_NOCAP;
+}
+
+static int demux_slave_get_optional_data(demux_plugin_t *this_gen,
+					void *data, int data_type) {
+  return DEMUX_OPTIONAL_UNSUPPORTED;
+}
+
+
+static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *stream,
+                                    input_plugin_t *input_gen) {
+
+  input_plugin_t *input = (input_plugin_t *) input_gen;
+  demux_slave_t *this;
+  static char slave_id_str[] = "master xine v1\n";
+  int len;
+
+  this         = xine_xmalloc (sizeof (demux_slave_t));
+
+  switch (stream->content_detection_method) {
+  
+  case METHOD_BY_EXTENSION: {
+    char *mrl;
+
+    mrl = input->get_mrl (input);
+
+    if(!strncmp(mrl, "slave://", 8))
+      break;
+    
+    free (this);
+    return NULL;
+  }
+  
+  case METHOD_BY_CONTENT: {
+
+    if ( (len = xine_demux_read_header(input, this->scratch, SCRATCH_SIZE)) > 0) {
+      if (!strncmp(this->scratch,slave_id_str,strlen(slave_id_str)))
+        break;
+    }
+
+    free (this);
+    return NULL;
+  }
+
+  case METHOD_EXPLICIT:
+  break;
+
+  default:
+    free (this);
+    return NULL;
+  }
+
+  this->stream = stream;
+  this->input  = input;
+  this->dec_infos = xine_list_new();
+
+  this->demux_plugin.send_headers      = demux_slave_send_headers;
+  this->demux_plugin.send_chunk        = demux_slave_send_chunk;
+  this->demux_plugin.seek              = demux_slave_seek;
+  this->demux_plugin.dispose           = demux_slave_dispose;
+  this->demux_plugin.get_status        = demux_slave_get_status;
+  this->demux_plugin.get_stream_length = demux_slave_get_stream_length;
+  this->demux_plugin.get_video_frame   = NULL;
+  this->demux_plugin.got_video_frame_cb= NULL;
+  this->demux_plugin.get_capabilities  = demux_slave_get_capabilities;
+  this->demux_plugin.get_optional_data = demux_slave_get_optional_data;
+  this->demux_plugin.demux_class       = class_gen;
+
+  this->status = DEMUX_FINISHED;
+      
+  this->input->read(this->input, this->scratch,strlen(slave_id_str));
+  this->scratch_used = 0;        
+
+  memset(this->decoder_info, 0, sizeof(this->decoder_info));
+  memset(this->decoder_info_ptr, 0, sizeof(this->decoder_info_ptr));
+ 
+  return &this->demux_plugin;
+}
+
+static char *get_description (demux_class_t *this_gen) {
+  return "";
+}
+
+static char *get_identifier (demux_class_t *this_gen) {
+  return "slave";
+}
+
+static char *get_extensions (demux_class_t *this_gen) {
+  return "";
+}
+
+static char *get_mimetypes (demux_class_t *this_gen) {
+  return NULL;
+}
+
+static void class_dispose (demux_class_t *this_gen) {
+
+  demux_slave_class_t *this = (demux_slave_class_t *) this_gen;
+
+  free (this);
+}
+
+static void *init_plugin (xine_t *xine, void *data) {
+
+  demux_slave_class_t     *this;
+
+  this         = xine_xmalloc (sizeof (demux_slave_class_t));
+  this->config = xine->config;
+  this->xine   = xine;
+
+  this->demux_class.open_plugin     = open_plugin;
+  this->demux_class.get_description = get_description;
+  this->demux_class.get_identifier  = get_identifier;
+  this->demux_class.get_mimetypes   = get_mimetypes;
+  this->demux_class.get_extensions  = get_extensions;
+  this->demux_class.dispose         = class_dispose;
+
+  return this;
+}
+
+/*
+ * exported plugin catalog entry
+ */
+
+plugin_info_t xine_plugin_info[] = {
+  /* type, API, "name", version, special_info, init_function */  
+  { PLUGIN_DEMUX, 21, "slave", XINE_VERSION_CODE, NULL, init_plugin },
+  { PLUGIN_NONE, 0, "", 0, NULL, NULL }
+};