codeclist.c

/*
 *  Copyright (C) 2007 Savoir-Faire Linux inc.
 *  Author: Emmanuel Milou <emmanuel.milou@savoirfairelinux.net>
 *
 *  This program 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <codeclist.h>

#include <string.h>
#include <stdlib.h>

#include "dbus.h"

GQueue * codecQueue = NULL;

gint
is_name_codecstruct (gconstpointer a, gconstpointer b)
{
  codec_t * c = (codec_t *)a;
  if(strcmp(c->name, (const gchar *)b)==0)
    return 0;
  else
    return 1;
}

gint
is_payload_codecstruct (gconstpointer a, gconstpointer b)
{
  codec_t * c = (codec_t *)a;
  if(c->_payload == GPOINTER_TO_INT(b))
    return 0;
  else
    return 1;
}

void
codec_list_init()
{
  codecQueue = g_queue_new();
}

void
codec_list_clear ()
{
  g_queue_free (codecQueue);
  codecQueue = g_queue_new();
}

void
codec_list_add(codec_t * c)
{
  g_queue_push_tail (codecQueue, (gpointer *) c);
}



void 
codec_set_active(codec_t * c)
{
	
	if(c)
	{
		DEBUG("%s set active", c->name);
		c->is_active = TRUE;
	}
}

void
codec_set_inactive(codec_t * c)
{
  
  if(c)
    c->is_active = FALSE;
}

guint
codec_list_get_size()
{
  return g_queue_get_length(codecQueue);
}

codec_t*
codec_list_get_by_name( const gchar* name)
{
  GList * c = g_queue_find_custom(codecQueue, name, is_name_codecstruct);
  if(c)
    return (codec_t *)c->data;
  else
    return NULL;
}

codec_t*
codec_list_get_by_payload(gconstpointer payload)
{
  GList * c = g_queue_find_custom(codecQueue, payload, is_payload_codecstruct);
  if(c)
    return (codec_t *)c->data;
  else
    return NULL;
}

codec_t*
codec_list_get_nth(guint index)
{
  return g_queue_peek_nth(codecQueue, index);
}

void
codec_set_prefered_order(guint index)
{
  codec_t * prefered = codec_list_get_nth(index);
  g_queue_pop_nth(codecQueue, index);
  g_queue_push_head(codecQueue, prefered);
}

/**
 *
 */
void
codec_list_move_codec_up(guint index)
{
        DEBUG("Codec list Size: %i \n",codec_list_get_size());
	if(index != 0)
	{
		gpointer codec = g_queue_pop_nth(codecQueue, index);
		g_queue_push_nth(codecQueue, codec, index-1);
	}

	// DEBUG
	unsigned int i;
	DEBUG("Codec list");
	for(i=0; i < codecQueue->length; i++)
		DEBUG("%s", codec_list_get_nth(i)->name);
}

/**
 *
 */
void
codec_list_move_codec_down(guint index)
{
        DEBUG("Codec list Size: %i \n",codec_list_get_size());
	if(index != codecQueue->length)
	{
		gpointer codec = g_queue_pop_nth(codecQueue, index);
		g_queue_push_nth(codecQueue, codec, index+1);
	}

	// PRINT
	unsigned int i;
	DEBUG("Codec list");
	for(i=0; i < codecQueue->length; i++)
		DEBUG("%s", codec_list_get_nth(i)->name);
}

/**
 *
 */
void
codec_list_update_to_daemon()
{
	// String listing of all codecs payloads
	const gchar** codecList;

	// Length of the codec list
	int length = codecQueue->length;

	// Initiate double array char list for one string
	codecList = (void*)malloc(sizeof(void*));

	// Get all codecs in queue
	int i, c = 0;
	DEBUG("List of active codecs :");
	for(i = 0; i < length; i++)
	{
		codec_t* currentCodec = codec_list_get_nth(i);
		// Assert not null
		if(currentCodec)
		{
			// Save only if active
			if(currentCodec->is_active)
			{
				// Reallocate memory each time more than one active codec is found
				if(c!=0)
					codecList = (void*)realloc(codecList, (c+1)*sizeof(void*));
				// Allocate memory for the payload
				*(codecList+c) = (gchar*)malloc(sizeof(gchar*));
				char payload[10];
				// Put payload string in char array
				sprintf(payload, "%d", currentCodec->_payload);
				strcpy((char*)*(codecList+c), payload);
				DEBUG(" %s", *(codecList+c));
				c++;
			}
		}
	}

	// Allocate NULL array at the end for Dbus
	codecList = (void*)realloc(codecList, (c+1)*sizeof(void*));
	*(codecList+c) = NULL;

	// call dbus function with array of strings
	dbus_set_active_codec_list(codecList);

	// Delete memory
	for(i = 0; i < c; i++) {
		free((gchar*)*(codecList+i));
	}
	free(codecList);
}