/* read U */		fread(u, 1, XDIM / 2, handle);		/* read V */		fread(v, 1, XDIM / 2, handle);		/* Update pointers */		u += XDIM / 2;		v += XDIM / 2;	}	/*  I don't know why, but this seems needed */	fread(&dummy, 1, 1, handle);	return (0);}#elsestatic intread_pnmheader(FILE * handle){	int bytes, xsize, ysize, depth;	char dummy[2];	bytes = fread(dummy, 1, 2, handle);	if ((bytes < 2) || (dummy[0] != 'P') || (dummy[1] != '6'))		return (1);	fscanf(handle, "%d %d %d", &xsize, &ysize, &depth);	if ((xsize > 1440) || (ysize > 2880) || (depth != 255)) {		fprintf(stderr, "%d %d %d\n", xsize, ysize, depth);		return (2);	}	XDIM = xsize;	YDIM = ysize;	return (0);}static intread_pnmdata(FILE * handle,			 unsigned char *image){	int i;	char dummy;	/* read Y component of picture */	fread(image, 1, XDIM * YDIM * 3, handle);	/*  I don't know why, but this seems needed */	fread(&dummy, 1, 1, handle);	return (0);}#endifstatic intread_yuvdata(FILE * handle,			 unsigned char *image){	if (fread(image, 1, IMAGE_SIZE(XDIM, YDIM), handle) !=		(unsigned int) IMAGE_SIZE(XDIM, YDIM))		return (1);	else		return (0);}/***************************************************************************** *     Routines for encoding: init encoder, frame step, release encoder ****************************************************************************//* sample plugin */intrawenc_debug(void *handle,			 int opt,			 void *param1,			 void *param2){	switch (opt) {	case XVID_PLG_INFO:		{			xvid_plg_info_t *info = (xvid_plg_info_t *) param1;			info->flags = XVID_REQDQUANTS;			return 0;		}	case XVID_PLG_CREATE:	case XVID_PLG_DESTROY:	case XVID_PLG_BEFORE:		return 0;	case XVID_PLG_AFTER:		{			xvid_plg_data_t *data = (xvid_plg_data_t *) param1;			int i, j;			printf("---[ frame: %5i   quant: %2i   length: %6i ]---\n",				   data->frame_num, data->quant, data->length);			for (j = 0; j < data->mb_height; j++) {				for (i = 0; i < data->mb_width; i++)					printf("%2i ", data->dquant[j * data->dquant_stride + i]);				printf("\n");			}			return 0;		}	}	return XVID_ERR_FAIL;}#define FRAMERATE_INCR 1001/* Initialize encoder for first use, pass all needed parameters to the codec */static intenc_init(int use_assembler){	int xerr;	//xvid_plugin_cbr_t cbr;    xvid_plugin_single_t single;	xvid_plugin_2pass1_t rc2pass1;	xvid_plugin_2pass2_t rc2pass2;	//xvid_plugin_fixed_t rcfixed;	xvid_enc_plugin_t plugins[7];	xvid_gbl_init_t xvid_gbl_init;	xvid_enc_create_t xvid_enc_create;	/*------------------------------------------------------------------------	 * XviD core initialization	 *----------------------------------------------------------------------*/	/* Set version -- version checking will done by xvidcore */	memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init));	xvid_gbl_init.version = XVID_VERSION;    xvid_gbl_init.debug = ARG_DEBUG;	/* Do we have to enable ASM optimizations ? */	if (use_assembler) {#ifdef ARCH_IS_IA64		xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ASM;#else		xvid_gbl_init.cpu_flags = 0;#endif	} else {		xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;	}	/* Initialize XviD core -- Should be done once per __process__ */	xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);	/*------------------------------------------------------------------------	 * XviD encoder initialization	 *----------------------------------------------------------------------*/	/* Version again */	memset(&xvid_enc_create, 0, sizeof(xvid_enc_create));	xvid_enc_create.version = XVID_VERSION;	/* Width and Height of input frames */	xvid_enc_create.width = XDIM;	xvid_enc_create.height = YDIM;	xvid_enc_create.profile = XVID_PROFILE_AS_L4;	/* init plugins  */    xvid_enc_create.zones = ZONES;    xvid_enc_create.num_zones = NUM_ZONES;	xvid_enc_create.plugins = plugins;	xvid_enc_create.num_plugins = 0;	if (ARG_SINGLE) {		memset(&single, 0, sizeof(xvid_plugin_single_t));		single.version = XVID_VERSION;		single.bitrate = ARG_BITRATE;		plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;		plugins[xvid_enc_create.num_plugins].param = &single;		xvid_enc_create.num_plugins++;	}	if (ARG_PASS2) {		memset(&rc2pass2, 0, sizeof(xvid_plugin_2pass2_t));		rc2pass2.version = XVID_VERSION;		rc2pass2.filename = ARG_PASS2;		rc2pass2.bitrate = ARG_BITRATE;		plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;		plugins[xvid_enc_create.num_plugins].param = &rc2pass2;		xvid_enc_create.num_plugins++;	}	if (ARG_PASS1) {		memset(&rc2pass1, 0, sizeof(xvid_plugin_2pass1_t));		rc2pass1.version = XVID_VERSION;		rc2pass1.filename = ARG_PASS1;		plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass1;		plugins[xvid_enc_create.num_plugins].param = &rc2pass1;		xvid_enc_create.num_plugins++;	}	if (ARG_LUMIMASKING) {		plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;		plugins[xvid_enc_create.num_plugins].param = NULL;		xvid_enc_create.num_plugins++;	}	if (ARG_DUMP) {		plugins[xvid_enc_create.num_plugins].func = xvid_plugin_dump;		plugins[xvid_enc_create.num_plugins].param = NULL;		xvid_enc_create.num_plugins++;	}#if 0	if (ARG_DEBUG) {		plugins[xvid_enc_create.num_plugins].func = rawenc_debug;		plugins[xvid_enc_create.num_plugins].param = NULL;		xvid_enc_create.num_plugins++;	}#endif	/* No fancy thread tests */	xvid_enc_create.num_threads = 0;	/* Frame rate - Do some quick float fps = fincr/fbase hack */	if ((ARG_FRAMERATE - (int) ARG_FRAMERATE) < SMALL_EPS) {		xvid_enc_create.fincr = 1;		xvid_enc_create.fbase = (int) ARG_FRAMERATE;	} else {		xvid_enc_create.fincr = FRAMERATE_INCR;		xvid_enc_create.fbase = (int) (FRAMERATE_INCR * ARG_FRAMERATE);	}	/* Maximum key frame interval */    if (ARG_MAXKEYINTERVAL > 0) {        xvid_enc_create.max_key_interval = ARG_MAXKEYINTERVAL;    }else {	    xvid_enc_create.max_key_interval = (int) ARG_FRAMERATE *10;    }	/* Bframes settings */	xvid_enc_create.max_bframes = ARG_MAXBFRAMES;	xvid_enc_create.bquant_ratio = ARG_BQRATIO;	xvid_enc_create.bquant_offset = ARG_BQOFFSET;	/* Dropping ratio frame -- we don't need that */	xvid_enc_create.frame_drop_ratio = 0;	/* Global encoder options */	xvid_enc_create.global = 0;	if (ARG_PACKED)		xvid_enc_create.global |= XVID_GLOBAL_PACKED;	if (ARG_CLOSED_GOP)		xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;	if (ARG_STATS)		xvid_enc_create.global |= XVID_GLOBAL_EXTRASTATS_ENABLE;	/* I use a small value here, since will not encode whole movies, but short clips */	xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);	/* Retrieve the encoder instance from the structure */	enc_handle = xvid_enc_create.handle;	return (xerr);}static intenc_stop(){	int xerr;	/* Destroy the encoder instance */	xerr = xvid_encore(enc_handle, XVID_ENC_DESTROY, NULL, NULL);	return (xerr);}static intenc_main(unsigned char *image,		 unsigned char *bitstream,		 int *key,		 int *stats_type,		 int *stats_quant,		 int *stats_length,		 int sse[3]){	int ret;	xvid_enc_frame_t xvid_enc_frame;	xvid_enc_stats_t xvid_enc_stats;	/* Version for the frame and the stats */	memset(&xvid_enc_frame, 0, sizeof(xvid_enc_frame));	xvid_enc_frame.version = XVID_VERSION;	memset(&xvid_enc_stats, 0, sizeof(xvid_enc_stats));	xvid_enc_stats.version = XVID_VERSION;	/* Bind output buffer */	xvid_enc_frame.bitstream = bitstream;	xvid_enc_frame.length = -1;	/* Initialize input image fields */	if (image) {		xvid_enc_frame.input.plane[0] = image;#ifndef READ_PNM		xvid_enc_frame.input.csp = XVID_CSP_I420;		xvid_enc_frame.input.stride[0] = XDIM;#else		xvid_enc_frame.input.csp = XVID_CSP_BGR;		xvid_enc_frame.input.stride[0] = XDIM*3;#endif	} else {		xvid_enc_frame.input.csp = XVID_CSP_NULL;	}	/* Set up core's general features */	xvid_enc_frame.vol_flags = 0;	if (ARG_STATS)		xvid_enc_frame.vol_flags |= XVID_VOL_EXTRASTATS;	if (ARG_QPEL)		xvid_enc_frame.vol_flags |= XVID_VOL_QUARTERPEL;	if (ARG_GMC)		xvid_enc_frame.vol_flags |= XVID_VOL_GMC;	/* Set up core's general features */	xvid_enc_frame.vop_flags = vop_presets[ARG_QUALITY];    if (ARG_VOPDEBUG) {        xvid_enc_frame.vop_flags |= XVID_VOP_DEBUG;    }	/* Frame type -- let core decide for us */	xvid_enc_frame.type = XVID_TYPE_AUTO;	/* Force the right quantizer -- It is internally managed by RC plugins */	xvid_enc_frame.quant = 0;	/* Set up motion estimation flags */	xvid_enc_frame.motion = motion_presets[ARG_QUALITY];	if (ARG_GMC)		xvid_enc_frame.motion |= XVID_ME_GME_REFINE;	if (ARG_QPEL)		xvid_enc_frame.motion |= XVID_ME_QUARTERPELREFINE16;	if (ARG_QPEL && (xvid_enc_frame.vop_flags & XVID_VOP_INTER4V))		xvid_enc_frame.motion |= XVID_ME_QUARTERPELREFINE8;	/* We don't use special matrices */	xvid_enc_frame.quant_intra_matrix = NULL;	xvid_enc_frame.quant_inter_matrix = NULL;	/* Encode the frame */	ret = xvid_encore(enc_handle, XVID_ENC_ENCODE, &xvid_enc_frame,					  &xvid_enc_stats);	*key = (xvid_enc_frame.out_flags & XVID_KEYFRAME);	*stats_type = xvid_enc_stats.type;	*stats_quant = xvid_enc_stats.quant;	*stats_length = xvid_enc_stats.length;	sse[0] = xvid_enc_stats.sse_y;	sse[1] = xvid_enc_stats.sse_u;	sse[2] = xvid_enc_stats.sse_v;	return (ret);}