/*
 * audio manager handling.
 *
 * 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

/* ***************************** */
/* Includes                      */
/* ***************************** */

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

#include <libavformat/avformat.h>
#include "manager.h"
#include "common.h"
#include "debug.h"

/* ***************************** */
/* Makros/Constants              */
/* ***************************** */

#define TRACKWRAP 20

/* Error Constants */
#define cERR_AUDIO_MGR_NO_ERROR        0
#define cERR_AUDIO_MGR_ERROR          -1

/* ***************************** */
/* Types                         */
/* ***************************** */

/* ***************************** */
/* Variables                     */
/* ***************************** */

static Track_t *Tracks = NULL;
static int TrackCount = 0;
static int CurrentTrack = 0;    //TRACK[0] as default.

/* ***************************** */
/* Prototypes                    */
/* ***************************** */

/* ***************************** */
/* Functions                     */
/* ***************************** */

static int ManagerAdd(Context_t *context, Track_t track)
{
	audio_mgr_printf(10, "%s::%s name=\"%s\" encoding=\"%s\" id=%d\n", __FILE__, __FUNCTION__, track.Name, track.Encoding, track.Id);

	if (Tracks == NULL)
	{
		Tracks = malloc(sizeof(Track_t) * TRACKWRAP);
		int i;
		for (i = 0; i < TRACKWRAP; i++)
		{
			Tracks[i].Id = -1;
		}
	}

	if (Tracks == NULL)
	{
		audio_mgr_err("%s::%s malloc failed\n", __FILE__, __FUNCTION__);
		return cERR_AUDIO_MGR_ERROR;
	}

	int i = 0;
	for (i = 0; i < TRACKWRAP; i++)
	{
		if (Tracks[i].Id == track.Id)
		{
			Tracks[i].pending = 0;
			if(track.aacbuf){
				free(track.aacbuf);
				track.aacbuf = NULL;
			}
			return cERR_AUDIO_MGR_NO_ERROR;
		}
	}

	if (TrackCount < TRACKWRAP)
	{
		copyTrack(&Tracks[TrackCount], &track);
		TrackCount++;
	}
	else
	{
		audio_mgr_err("%s::%s TrackCount out if range %d - %d\n", __FILE__, __FUNCTION__, TrackCount, TRACKWRAP);
		return cERR_AUDIO_MGR_ERROR;
	}

	if (TrackCount > 0)
	{
		context->playback->isAudio = 1;
	}

	audio_mgr_printf(10, "%s::%s\n", __FILE__, __FUNCTION__);

	return cERR_AUDIO_MGR_NO_ERROR;
}

static char **ManagerList(Context_t *context __attribute__((unused)))
{
	int i = 0, j = 0;
	char **tracklist = NULL;

	audio_mgr_printf(10, "%s::%s\n", __FILE__, __FUNCTION__);

	if (Tracks != NULL)
	{
		tracklist = malloc(sizeof(char *) * ((TrackCount * 2) + 1));

		if (tracklist == NULL)
		{
			audio_mgr_err("%s::%s malloc failed\n", __FILE__, __FUNCTION__);
			return NULL;
		}

		for (i = 0, j = 0; i < TrackCount; i++, j += 2)
		{
			if (Tracks[i].pending)
			{
				continue;
			}

			size_t len = strlen(Tracks[i].Name) + 20;
			char tmp[len];
			snprintf(tmp, len, "%d %s", Tracks[i].Id, Tracks[i].Name);
			tracklist[j] = strdup(tmp);
			tracklist[j + 1] = strdup(Tracks[i].Encoding);
		}
		tracklist[j] = NULL;
	}

	audio_mgr_printf(10, "%s::%s return %p (%d - %d)\n", __FILE__, __FUNCTION__, tracklist, j, TrackCount);

	return tracklist;
}

#if 0
static TrackDescription_t *ManagerList(Context_t  *context __attribute__((unused)))
{
	int i = 0;
	TrackDescription_t *tracklist = NULL;

	audio_mgr_printf(10, "%s::%s\n", __FILE__, __FUNCTION__);
	if (Tracks != NULL)
	{
		tracklist = malloc(sizeof(TrackDescription_t) * ((TrackCount) + 1));

		if (tracklist == NULL)
		{
			audio_mgr_err("%s::%s malloc failed\n", __FILE__, __FUNCTION__);
			return NULL;
		}

		int j = 0;
		for (i = 0; i < TrackCount; ++i)
		{
			if (Tracks[i].pending || Tracks[i].Id < 0)
			{
				continue;
			}

			tracklist[j].Id = Tracks[i].Id;
			tracklist[j].Name = strdup(Tracks[i].Name);
			tracklist[j].Encoding = strdup(Tracks[i].Encoding);
			++j;
		}

		tracklist[j].Id = -1;
	}
	//audio_mgr_printf(10, "%s::%s return %p (%d - %d)\n", __FILE__, __FUNCTION__, tracklist, j, TrackCount);

	return tracklist;
}
#endif

static int ManagerDel(Context_t *context)
{
	int i = 0;

	audio_mgr_printf(10, "%s::%s\n", __FILE__, __FUNCTION__);

	if (Tracks != NULL)
	{
		for (i = 0; i < TrackCount; i++)
		{
			freeTrack(&Tracks[i]);
		}

		free(Tracks);
		Tracks = NULL;
	}
	else
	{
		audio_mgr_err("%s::%s nothing to delete!\n", __FILE__, __FUNCTION__);
		return cERR_AUDIO_MGR_ERROR;
	}

	TrackCount = 0;
	CurrentTrack = 0;
	context->playback->isAudio = 0;

	audio_mgr_printf(10, "%s::%s return no error\n", __FILE__, __FUNCTION__);

	return cERR_AUDIO_MGR_NO_ERROR;
}

static int Command(Context_t *context, ManagerCmd_t command, void *argument)
{
	int ret = cERR_AUDIO_MGR_NO_ERROR;

	audio_mgr_printf(10, "%s::%s\n", __FILE__, __FUNCTION__);

	switch (command)
	{
		case MANAGER_ADD:
		{
			Track_t *track = argument;
			ret = ManagerAdd(context, *track);
			break;
		}
		case MANAGER_LIST:
		{
			container_ffmpeg_update_tracks(context, context->playback->uri, 0);
//			*((TrackDescription_t **)argument) = ManagerList(context);
			*((char ***)argument) = (char **)ManagerList(context);
			break;
		}
		case MANAGER_REF_LIST:
		{
			*((Track_t **)argument) = Tracks;
			break;
		}
		case MANAGER_REF_LIST_SIZE:
		{
			*((int *)argument) = TrackCount;
			break;
		}
		case MANAGER_GET:
		{
			audio_mgr_printf(20, "%s::%s MANAGER_GET\n", __FILE__, __FUNCTION__);

			if ((TrackCount > 0) && (CurrentTrack >= 0))
			{
				*((int *)argument) = (int)Tracks[CurrentTrack].Id;
			}
			else
			{
				*((int *)argument) = (int) -1;
			}
			break;
		}
		case MANAGER_GET_TRACK_DESC:
		{
			if ((TrackCount > 0) && (CurrentTrack >= 0))
			{
				TrackDescription_t *track =  malloc(sizeof(TrackDescription_t));
				*((TrackDescription_t **)argument) = track;
				if (track)
				{
					memset(track, 0, sizeof(TrackDescription_t));
					track->Id       = Tracks[CurrentTrack].Id;
					track->Name     = strdup(Tracks[CurrentTrack].Name);
					track->Encoding = strdup(Tracks[CurrentTrack].Encoding);
				}
			}
			else
			{
				*((TrackDescription_t **)argument) = NULL;
			}
			break;
		}
		case MANAGER_GET_TRACK:
		{
			audio_mgr_printf(20, "%s::%s MANAGER_GET_TRACK\n", __FILE__, __FUNCTION__);

			if ((TrackCount > 0) && (CurrentTrack >= 0))
			{
				*((Track_t **)argument) = (Track_t *) &Tracks[CurrentTrack];
			}
			else
			{
				*((Track_t **)argument) = NULL;
			}
			break;
		}
		case MANAGER_GETENCODING:
		{
			if ((TrackCount > 0) && (CurrentTrack >= 0))
			{
				*((char **)argument) = (char *)strdup(Tracks[CurrentTrack].Encoding);
			}
			else
			{
				*((char **)argument) = (char *)strdup("");
			}
			break;
		}
		case MANAGER_GETNAME:
		{
			if ((TrackCount > 0) && (CurrentTrack >= 0))
			{
				*((char **)argument) = (char *)strdup(Tracks[CurrentTrack].Name);
			}
			else
			{
				*((char **)argument) = (char *)strdup("");
			}
			break;
		}
		case MANAGER_SET:
		{
			int i;
			audio_mgr_printf(20, "%s::%s MANAGER_SET id=%d\n", __FILE__, __FUNCTION__, *((int *)argument));

			for (i = 0; i < TrackCount; i++)
			{
				if (Tracks[i].Id == *((int *)argument))
				{
					CurrentTrack = i;
					break;
				}
			}

			if (i == TrackCount)
			{
				audio_mgr_err("%s::%s track id %d unknown\n", __FILE__, __FUNCTION__, *((int *)argument));
				ret = cERR_AUDIO_MGR_ERROR;
			}
			break;
		}
		case MANAGER_DEL:
		{
			ret = ManagerDel(context);
			break;
		}
		case MANAGER_INIT_UPDATE:
		{
			int i;
			for (i = 0; i < TrackCount; i++)
			{
				Tracks[i].pending = 1;
			}
			break;
		}
		default:
			audio_mgr_err("%s::%s ContainerCmd %d not supported!\n", __FILE__, __FUNCTION__, command);
			ret = cERR_AUDIO_MGR_ERROR;
			break;
	}

	audio_mgr_printf(10, "%s::%s returning %d\n", __FILE__, __FUNCTION__, ret);

	return ret;
}


struct Manager_s AudioManager =
{
	"Audio",
	&Command,
	NULL
};