/*
 * $Id$
 *
 * This is external code. Identify and convert different avi-files.
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/avi/intern/codecs.c
 *  \ingroup avi
 */


#include "AVI_avi.h"
#include "avi_intern.h"

#include "avirgb.h"
#include "mjpeg.h"
#include "rgb32.h"

void *avi_format_convert (AviMovie *movie, int stream, void *buffer, AviFormat from, AviFormat to, int *size) {
	if (from == to)
		return buffer;

	if (from != AVI_FORMAT_RGB24 &&
	to != AVI_FORMAT_RGB24)
		return avi_format_convert(movie, stream,
		avi_format_convert (movie, stream, buffer, from, AVI_FORMAT_RGB24, size),
		AVI_FORMAT_RGB24, to, size);

	switch (to) {
	case AVI_FORMAT_RGB24:
		switch (from) {
		case AVI_FORMAT_AVI_RGB:
			buffer = avi_converter_from_avi_rgb (movie, stream, buffer, size);
			break;
		case AVI_FORMAT_MJPEG:
			buffer = avi_converter_from_mjpeg (movie, stream, buffer, size);
			break;
		case AVI_FORMAT_RGB32:
			buffer = avi_converter_from_rgb32 (movie, stream, buffer, size);
			break;
		default:
			break;
		}
		break;
	case AVI_FORMAT_AVI_RGB:
		buffer = avi_converter_to_avi_rgb (movie, stream, buffer, size);
		break;
	case AVI_FORMAT_MJPEG:
		buffer = avi_converter_to_mjpeg (movie, stream, buffer, size);
		break;
	case AVI_FORMAT_RGB32:
		buffer = avi_converter_to_rgb32 (movie, stream, buffer, size);
		break;
	default:
		break;
	}

	return buffer;
}

int avi_get_data_id (AviFormat format, int stream) {
	char fcc[5];

	if (avi_get_format_type (format) == FCC("vids"))
		sprintf (fcc,"%2.2ddc",stream);
	else if (avi_get_format_type (format) == FCC("auds"))
		sprintf (fcc,"%2.2ddc",stream);
	else
		return 0;

	return FCC(fcc);
}

int avi_get_format_type (AviFormat format) {
	switch (format) {
	case AVI_FORMAT_RGB24:
	case AVI_FORMAT_RGB32:
	case AVI_FORMAT_AVI_RGB:
	case AVI_FORMAT_MJPEG:
		return FCC("vids");
		break;
	default:
		return 0;
		break;
	}
}

int avi_get_format_fcc (AviFormat format) {
	switch (format) {
	case AVI_FORMAT_RGB24:
	case AVI_FORMAT_RGB32:
	case AVI_FORMAT_AVI_RGB:
		return FCC("DIB ");
		break;
	case AVI_FORMAT_MJPEG:
		return FCC("MJPG");
		break;
	default:
		return 0;
		break;
	}
}

int avi_get_format_compression (AviFormat format) {
	switch (format) {
	case AVI_FORMAT_RGB24:
	case AVI_FORMAT_RGB32:
	case AVI_FORMAT_AVI_RGB:
		return 0;
		break;
	case AVI_FORMAT_MJPEG:
		return FCC("MJPG");
		break;
	default:
		return 0;
		break;
	}
}