xine_plugin.c

来自「linux下的MPEG1」· C语言 代码 · 共 927 行 · 第 1/3 页

  register_deinterlace_method( linear_get_method() );
  register_deinterlace_method( linearblend_get_method() );
  register_deinterlace_method( greedy_get_method() );
  register_deinterlace_method( greedy2frame_get_method() );
  register_deinterlace_method( weave_get_method() );
  register_deinterlace_method( double_get_method() );
  register_deinterlace_method( vfir_get_method() );
  register_deinterlace_method( scalerbob_get_method() );
  register_deinterlace_method( dscaler_greedyh_get_method() );
  register_deinterlace_method( dscaler_tomsmocomp_get_method() );

  filter_deinterlace_methods( config_flags, 5 /*fieldsavailable*/ );
  if( !get_num_deinterlace_methods() ) {
      xprintf(xine, XINE_VERBOSITY_LOG, 
	      _("tvtime: No deinterlacing methods available, exiting.\n"));
      return NULL;
  }

  help_string = xine_buffer_init(1024);
  xine_buffer_strcat( help_string, get_static_help() );

  enum_methods[0] = "use_vo_driver";
  for(i = 0; i < get_num_deinterlace_methods(); i++ ) {
    deinterlace_method_t *method;

    method = get_deinterlace_method(i);
    
    enum_methods[i+1] = method->short_name;
    xine_buffer_strcat( help_string, "[" );
    xine_buffer_strcat( help_string, method->short_name );
    xine_buffer_strcat( help_string, "] " );
    xine_buffer_strcat( help_string, method->name );
    xine_buffer_strcat( help_string, ":\n" );
    if (method->description)
      xine_buffer_strcat( help_string, method->description );
    xine_buffer_strcat( help_string, "\n---\n" );
  }
  enum_methods[i+1] = NULL;
  

  /* Some default values */
  class->init_param.method                     = 1; /* First (plugin) method available */
  class->init_param.enabled                    = 1;
  class->init_param.pulldown                   = 1; /* vektor */
  class->init_param.framerate_mode             = 0; /* full */
  class->init_param.judder_correction          = 1; 
  class->init_param.use_progressive_frame_flag = 1;
  class->init_param.chroma_filter              = 0;
  class->init_param.cheap_mode                 = 0;

  return &class->class;
}


static post_plugin_t *deinterlace_open_plugin(post_class_t *class_gen, int inputs,
					 xine_audio_port_t **audio_target,
					 xine_video_port_t **video_target)
{
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)xine_xmalloc(sizeof(post_plugin_deinterlace_t));
  post_in_t                 *input;
  xine_post_in_t            *input_api;
  post_out_t                *output;
  post_class_deinterlace_t  *class = (post_class_deinterlace_t *)class_gen;
  post_video_port_t *port;
  
  if (!this || !video_target || !video_target[0]) {
    free(this);
    return NULL;
  }
  
  _x_post_init(&this->post, 0, 1);

  this->tvtime = tvtime_new_context();
  this->tvtime_changed++;
  this->tvtime_last_filmmode = 0;

  pthread_mutex_init (&this->lock, NULL);

  set_parameters ((xine_post_t *)&this->post, &class->init_param);
  
  port = _x_post_intercept_video_port(&this->post, video_target[0], &input, &output);
  /* replace with our own get_frame function */
  port->new_port.open         = deinterlace_open;
  port->new_port.close        = deinterlace_close;
  port->new_port.get_property = deinterlace_get_property;
  port->new_port.set_property = deinterlace_set_property;
  port->new_port.flush        = deinterlace_flush;
  port->intercept_frame       = deinterlace_intercept_frame;
  port->new_frame->draw       = deinterlace_draw;
  
  input_api       = &this->parameter_input;
  input_api->name = "parameters";
  input_api->type = XINE_POST_DATA_PARAMETERS;
  input_api->data = &post_api;
  xine_list_push_back(this->post.input, input_api);

  input->xine_in.name     = "video";
  output->xine_out.name   = "deinterlaced video";
  
  this->post.xine_post.video_input[0] = &port->new_port;
  
  this->post.dispose = deinterlace_dispose;
  
  return &this->post;
}

static char *deinterlace_get_identifier(post_class_t *class_gen)
{
  return "tvtime";
}

static char *deinterlace_get_description(post_class_t *class_gen)
{
  return "advanced deinterlacer plugin with pulldown detection";
}

static void deinterlace_class_dispose(post_class_t *class_gen)
{
  xine_buffer_free(help_string);
  free(class_gen);
}


static void deinterlace_dispose(post_plugin_t *this_gen)
{
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)this_gen;

  if (_x_post_dispose(this_gen)) {
    _flush_frames(this);
    pthread_mutex_destroy(&this->lock);
    free(this);
  }
}


static int deinterlace_get_property(xine_video_port_t *port_gen, int property) {
  post_video_port_t *port = (post_video_port_t *)port_gen;
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;
  if( property == XINE_PARAM_VO_DEINTERLACE && this->cur_method )
    return this->enabled;
  else
    return port->original_port->get_property(port->original_port, property);
}

static int deinterlace_set_property(xine_video_port_t *port_gen, int property, int value) {
  post_video_port_t *port = (post_video_port_t *)port_gen;
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;
  if( property == XINE_PARAM_VO_DEINTERLACE ) {
    pthread_mutex_lock (&this->lock);

    if( this->enabled != value )
      _flush_frames(this);

    this->enabled = value;

    pthread_mutex_unlock (&this->lock);

    this->vo_deinterlace_enabled = this->enabled && (!this->cur_method);
    
    port->original_port->set_property(port->original_port, 
                                      XINE_PARAM_VO_DEINTERLACE, 
                                      this->vo_deinterlace_enabled);

    return this->enabled;
  } else
    return port->original_port->set_property(port->original_port, property, value);
}

static void deinterlace_flush(xine_video_port_t *port_gen) {
  post_video_port_t *port = (post_video_port_t *)port_gen;
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;

  _flush_frames(this);

  port->original_port->flush(port->original_port);
}

static void deinterlace_open(xine_video_port_t *port_gen, xine_stream_t *stream)
{
  post_video_port_t *port = (post_video_port_t *)port_gen;
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;
  
  _x_post_rewire(&this->post);
  _x_post_inc_usage(port);
  port->stream = stream;
  (port->original_port->open) (port->original_port, stream);
  this->vo_deinterlace_enabled = !this->cur_method;
  port->original_port->set_property(port->original_port, 
                                    XINE_PARAM_VO_DEINTERLACE, 
                                    this->vo_deinterlace_enabled);
}

static void deinterlace_close(xine_video_port_t *port_gen, xine_stream_t *stream)
{
  post_video_port_t *port = (post_video_port_t *)port_gen;
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;

  port->stream = NULL;
  _flush_frames(this);
  port->original_port->set_property(port->original_port, 
                                    XINE_PARAM_VO_DEINTERLACE, 
                                    0);
  port->original_port->close(port->original_port, stream);
  _x_post_dec_usage(port);
}


static int deinterlace_intercept_frame(post_video_port_t *port, vo_frame_t *frame)
{
  post_plugin_deinterlace_t *this = (post_plugin_deinterlace_t *)port->post;
  int vo_deinterlace_enabled = 0;
    
  vo_deinterlace_enabled = ( frame->format != XINE_IMGFMT_YV12 &&
                             frame->format != XINE_IMGFMT_YUY2 &&
                             this->enabled );
  
  if( this->cur_method &&
      this->vo_deinterlace_enabled != vo_deinterlace_enabled ) {
    this->vo_deinterlace_enabled = vo_deinterlace_enabled;
    port->original_port->set_property(port->original_port, 
                                      XINE_PARAM_VO_DEINTERLACE, 
                                      this->vo_deinterlace_enabled);
  }
  
  return (this->enabled && this->cur_method &&
      (frame->flags & VO_INTERLACED_FLAG) && 
      (frame->format == XINE_IMGFMT_YV12 || frame->format == XINE_IMGFMT_YUY2) );
}


static void apply_chroma_filter( uint8_t *data, int stride, int width, int height )
{
  int i;

  /* ok, using linearblend inplace is a bit weird: the result of a scanline
   * interpolation will affect the next scanline. this might not be a problem
   * at all, we just want a kind of filter here.
   */
  for( i = 0; i < height; i++, data += stride ) {
    vfilter_chroma_332_packed422_scanline( data, width,
                                           data, 
                                           (i) ? (data - stride) : data,
                                           (i < height-1) ? (data + stride) : data );
  }
}

/* Build the output frame from the specified field. */
static int deinterlace_build_output_field(
             post_plugin_deinterlace_t *this, post_video_port_t *port, 
             xine_stream_t *stream,
             vo_frame_t *frame, vo_frame_t *yuy2_frame,
             int bottom_field, int second_field,
             int64_t pts, int64_t duration, int skip)
{
  vo_frame_t *deinterlaced_frame;
  int scaler = 1;
  int force24fps;
            
  force24fps = this->judder_correction && !this->cheap_mode &&
               ( this->pulldown == PULLDOWN_VEKTOR && this->tvtime->filmmode );
  
  if( this->tvtime->curmethod->doscalerbob ) {
    scaler = 2;
  }
    
  pthread_mutex_unlock (&this->lock);
  deinterlaced_frame = port->original_port->get_frame(port->original_port,
    frame->width, frame->height / scaler, frame->ratio, yuy2_frame->format,
    frame->flags | VO_BOTH_FIELDS);
  pthread_mutex_lock (&this->lock);

  deinterlaced_frame->crop_left   = frame->crop_left;
  deinterlaced_frame->crop_right  = frame->crop_right;
  deinterlaced_frame->crop_top    = frame->crop_top;
  deinterlaced_frame->crop_bottom = frame->crop_bottom;

  _x_extra_info_merge(deinterlaced_frame->extra_info, frame->extra_info);
    
  if( skip > 0 && !this->pulldown ) {
    deinterlaced_frame->bad_frame = 1;
  } else {
    if( this->tvtime->curmethod->doscalerbob ) {
      if( yuy2_frame->format == XINE_IMGFMT_YUY2 ) {
        deinterlaced_frame->bad_frame = !tvtime_build_copied_field(this->tvtime,
                           deinterlaced_frame->base[0],
                           yuy2_frame->base[0], bottom_field,
                           frame->width, frame->height, 
                           yuy2_frame->pitches[0], deinterlaced_frame->pitches[0] );
      } else {
        deinterlaced_frame->bad_frame = !tvtime_build_copied_field(this->tvtime,
                           deinterlaced_frame->base[0],
                           yuy2_frame->base[0], bottom_field,
                           frame->width/2, frame->height, 
                           yuy2_frame->pitches[0], deinterlaced_frame->pitches[0] );
        deinterlaced_frame->bad_frame += !tvtime_build_copied_field(this->tvtime,
                           deinterlaced_frame->base[1],
                           yuy2_frame->base[1], bottom_field,
                           frame->width/4, frame->height/2, 
                           yuy2_frame->pitches[1], deinterlaced_frame->pitches[1] );
        deinterlaced_frame->bad_frame += !tvtime_build_copied_field(this->tvtime,
                           deinterlaced_frame->base[2],
                           yuy2_frame->base[2], bottom_field,
                           frame->width/4, frame->height/2, 
                           yuy2_frame->pitches[2], deinterlaced_frame->pitches[2] );
      }
    } else {
      if( yuy2_frame->format == XINE_IMGFMT_YUY2 ) {
        deinterlaced_frame->bad_frame = !tvtime_build_deinterlaced_frame(this->tvtime,