/*
 * linuxdvb output/writer handling.
 *
 * konfetti 2010 based on linuxdvb.c code from libeplayer2
 *
 * 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <linux/dvb/video.h>
#include <linux/dvb/audio.h>
#include <memory.h>
#include <asm/types.h>
#include <pthread.h>
#include <errno.h>

#include "stm_ioctls.h"
#include "bcm_ioctls.h"

#include "debug.h"
#include "common.h"
#include "output.h"
#include "debug.h"
#include "misc.h"
#include "pes.h"
#include "writer.h"

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

#define B_GET_BITS(w,e,b)  (((w)>>(b))&(((unsigned)(-1))>>((sizeof(unsigned))*8-(e+1-b))))
#define B_SET_BITS(name,v,e,b)  (((unsigned)(v))<<(b))

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

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

static uint8_t initialHeader = 1;
static uint8_t brcm_divx311_sequence_header[] =
{
	0x00, 0x00, 0x01, 0xE0, 0x00, 0x34, 0x80, 0x80, // PES HEADER
	0x05, 0x2F, 0xFF, 0xFF, 0xFF, 0xFF,
	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20, /* 0 .. 7 */
	0x08, 0xC8, 0x0D, 0x40, 0x00, 0x53, 0x88, 0x40, /* 8 .. 15 */
	0x0C, 0x40, 0x01, 0x90, 0x00, 0x97, 0x53, 0x0A, /* 16 .. 24 */
	0x00, 0x00, 0x00, 0x00,
	0x30, 0x7F, 0x00, 0x00, 0x01, 0xB2, 0x44, 0x69, /* 0 .. 7 */
	0x76, 0x58, 0x33, 0x31, 0x31, 0x41, 0x4E, 0x44  /* 8 .. 15 */
};

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

/* ***************************** */
/* MISC Functions                */
/* ***************************** */

static int reset()
{
	initialHeader = 1;
	return 0;
}

static int writeData(WriterAVCallData_t *call)
{
	unsigned char PesHeader[PES_MAX_HEADER_SIZE + 4];
//	unsigned char Version = 5;
//	unsigned int  FakeStartCode = (Version << 8) | PES_VERSION_FAKE_START_CODE;

	divx_printf(10, "\n");

	if (call == NULL)
	{
		divx_err("call data is NULL...\n");
		return 0;
	}

	if ((call->data == NULL) || (call->len <= 0))
	{
		divx_err("parsing NULL Data. ignoring...\n");
		return 0;
	}

	if (call->fd < 0)
	{
		divx_err("file pointer < 0. ignoring ...\n");
		return 0;
	}

	divx_printf(10, "AudioPts %lld\n", call->Pts);

	struct iovec iov[8];
	int ic = 0;

	if (initialHeader)
	{
		initialHeader = 0;
		uint8_t *data = brcm_divx311_sequence_header;
		int32_t height = call->Height;
		int32_t width  = call->Width;
		data += 38;
		data[0] = B_GET_BITS(width, 11, 4);
		data[1] = B_SET_BITS("width [3..0]", B_GET_BITS(width, 3, 0), 7, 4) |
		          B_SET_BITS("'10'", 0x02, 3, 2) |
		          B_SET_BITS("height [11..10]", B_GET_BITS(height, 11, 10), 1, 0);
		data[2] = B_GET_BITS(height, 9, 2);
		data[3] = B_SET_BITS("height [1.0]", B_GET_BITS(height, 1, 0), 7, 6) |
		          B_SET_BITS("'100000'", 0x20, 5, 0);

		iov[ic].iov_base = brcm_divx311_sequence_header;
		iov[ic++].iov_len = sizeof(brcm_divx311_sequence_header);
	}

	iov[ic].iov_base = PesHeader;
	uint32_t headerSize = 0;

	if (memcmp(call->data, "\x00\x00\x01\xb6", 4))
	{
		headerSize = InsertPesHeader(PesHeader, call->len + 4, MPEG_VIDEO_PES_START_CODE, call->Pts, 0);
		memcpy(PesHeader + headerSize, "\x00\x00\x01\xb6", 4);
		headerSize += 4;
	}
	else
	{
		headerSize = InsertPesHeader(PesHeader, call->len, MPEG_VIDEO_PES_START_CODE, call->Pts, 0);
	}
	iov[ic++].iov_len = headerSize;

	iov[ic].iov_base = call->data;
	iov[ic++].iov_len = call->len;

	int len = call->WriteV(call->fd, iov, ic);

	divx_printf(10, "xvid_Write < len=%d\n", len);

	return len;
}

/* ***************************** */
/* Writer  Definition            */
/* ***************************** */

static WriterCaps_t divix3_caps =
{
	"divix3",
	eVideo,
	"V_DIVX3",
	VIDEO_ENCODING_MPEG4P2,
	STREAMTYPE_DIVX311,
	-1
};

struct Writer_s WriterVideoDIVX3 =
{
	&reset,
	&writeData,
	&divix3_caps
};