recycled-ni-libstb-hal/libeplayer3/output/writer/sh4/vc1.c

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

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

#define WMV3_PRIVATE_DATA_LENGTH          4

#define METADATA_STRUCT_A_START           12
#define METADATA_STRUCT_B_START           24
#define METADATA_STRUCT_B_FRAMERATE_START 32
#define METADATA_STRUCT_C_START           8

#define VC1_SEQUENCE_LAYER_METADATA_START_CODE  0x80
#define VC1_FRAME_START_CODE                    0x0d

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

static const unsigned char  SequenceLayerStartCode[] = {0x00,    0x00,   0x01,   VC1_SEQUENCE_LAYER_METADATA_START_CODE};

static const unsigned char  Metadata[] =
{
	0x00,    0x00,   0x00,   0xc5,
	0x04,    0x00,   0x00,   0x00,
	0xc0,    0x00,   0x00,   0x00,   /* Struct C set for for advanced profile*/
	0x00,    0x00,   0x00,   0x00,   /* Struct A */
	0x00,    0x00,   0x00,   0x00,
	0x0c,    0x00,   0x00,   0x00,
	0x60,    0x00,   0x00,   0x00,   /* Struct B */
	0x00,    0x00,   0x00,   0x00,
	0x00,    0x00,   0x00,   0x00
};

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

static int initialHeader = 1;
static unsigned char FrameHeaderSeen = 0;

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

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

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

static int writeData(void *_call)
{
	WriterAVCallData_t *call = (WriterAVCallData_t *) _call;

	int len = 0;
	vc1_printf(10, "\n");

	if (call == NULL)
	{
		vc1_err("call data is NULL...\n");
		return 0;
	}

	if ((call->data == NULL) || (call->len <= 0))
	{
		vc1_err("parsing NULL Data. ignoring...\n");
		return 0;
	}

	if (call->fd < 0)
	{
		vc1_err("file pointer < 0. ignoring ...\n");
		return 0;
	}

	vc1_printf(10, "VideoPts %lld\n", call->Pts);
	vc1_printf(10, "Got Private Size %d\n", call->private_size);

	if (initialHeader)
	{
		unsigned char   PesHeader[PES_MAX_HEADER_SIZE];
		unsigned char   PesPayload[128];
		unsigned char  *PesPtr;
		unsigned int    crazyFramerate = 0;
		struct iovec    iov[2];

		vc1_printf(10, "Framerate: %u\n", call->FrameRate);
		vc1_printf(10, "biWidth: %d\n",   call->Width);
		vc1_printf(10, "biHeight: %d\n",  call->Height);

		crazyFramerate = ((10000000.0 / call->FrameRate) * 1000.0);
		vc1_printf(10, "crazyFramerate: %u\n", crazyFramerate);

		memset(PesPayload, 0, sizeof(PesPayload));

		PesPtr = PesPayload;

		memcpy(PesPtr, SequenceLayerStartCode, sizeof(SequenceLayerStartCode));
		PesPtr += sizeof(SequenceLayerStartCode);

		memcpy(PesPtr, Metadata, sizeof(Metadata));
		PesPtr += METADATA_STRUCT_C_START;
		PesPtr += WMV3_PRIVATE_DATA_LENGTH;

		/* Metadata Header Struct A */
		*PesPtr++ = (call->Height >>  0) & 0xff;
		*PesPtr++ = (call->Height >>  8) & 0xff;
		*PesPtr++ = (call->Height >> 16) & 0xff;
		*PesPtr++ =  call->Height >> 24;
		*PesPtr++ = (call->Width  >>  0) & 0xff;
		*PesPtr++ = (call->Width  >>  8) & 0xff;
		*PesPtr++ = (call->Width  >> 16) & 0xff;
		*PesPtr++ =  call->Width  >> 24;

		PesPtr += 12; /* Skip flag word and Struct B first 8 bytes */

		*PesPtr++ = (crazyFramerate >>  0) & 0xff;
		*PesPtr++ = (crazyFramerate >>  8) & 0xff;
		*PesPtr++ = (crazyFramerate >> 16) & 0xff;
		*PesPtr++ =  crazyFramerate >> 24;

		iov[0].iov_base = PesHeader;
		iov[1].iov_base = PesPayload;
		iov[1].iov_len = PesPtr - PesPayload;
		iov[0].iov_len = InsertPesHeader(PesHeader, iov[1].iov_len, VC1_VIDEO_PES_START_CODE, INVALID_PTS_VALUE, 0);
		len = call->WriteV(call->fd, iov, 2);

		/* For VC1 the codec private data is a standard vc1 sequence header so we just copy it to the output */
		iov[0].iov_base = PesHeader;
		iov[1].iov_base = call->private_data;
		iov[1].iov_len = call->private_size;
		iov[0].iov_len = InsertPesHeader(PesHeader, iov[1].iov_len, VC1_VIDEO_PES_START_CODE, INVALID_PTS_VALUE, 0);
		len = call->WriteV(call->fd, iov, 2);

		initialHeader = 0;
	}

	if (call->len > 0 && call->data)
	{
		uint32_t Position = 0;
		uint8_t insertSampleHeader = 1;

		while (Position < call->len)
		{
			int32_t PacketLength = (call->len - Position) <= MAX_PES_PACKET_SIZE ?
			                       (call->len - Position) : MAX_PES_PACKET_SIZE;

			int32_t Remaining = call->len - Position - PacketLength;

			vc1_printf(20, "PacketLength=%d, Remaining=%d, Position=%d\n", PacketLength, Remaining, Position);

			uint8_t PesHeader[PES_MAX_HEADER_SIZE];
			int32_t HeaderLength = InsertPesHeader(PesHeader, PacketLength, VC1_VIDEO_PES_START_CODE, call->Pts, 0);

			if (insertSampleHeader)
			{
				const uint8_t Vc1FrameStartCode[] = {0, 0, 1, VC1_FRAME_START_CODE};

				if (!FrameHeaderSeen && (call->len > 3) && (memcmp(call->data, Vc1FrameStartCode, 4) == 0))
				{
					FrameHeaderSeen = 1;
				}

				if (!FrameHeaderSeen)
				{
					memcpy(&PesHeader[HeaderLength], Vc1FrameStartCode, sizeof(Vc1FrameStartCode));
					HeaderLength += sizeof(Vc1FrameStartCode);
				}
				insertSampleHeader = 0;
			}

			struct iovec iov[2];
			iov[0].iov_base = PesHeader;
			iov[0].iov_len = HeaderLength;
			iov[1].iov_base = call->data + Position;
			iov[1].iov_len = PacketLength;

			ssize_t l = call->WriteV(call->fd, iov, 2);
			if (l < 0)
			{
				len = l;
				break;
			}
			len += l;

			Position += PacketLength;
			call->Pts = INVALID_PTS_VALUE;
		}
	}

	vc1_printf(10, "< %d\n", len);
	return len;
}

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

static WriterCaps_t caps =
{
	"vc1",
	eVideo,
	"V_VC1",
	VIDEO_ENCODING_VC1,
	-1,
	-1
};

struct Writer_s WriterVideoVC1 =
{
	&reset,
	&writeData,
	&caps
};