[media] dvb-core: move dvb_filter out of the DVB core

The dvb_filter.c can hardly be considered as part of the DVB
core. More than half of the code there is commented out by
av7110 and ttusb_dec.

On the latter, just two small helper functions and a struct
definition is used.

Being part of the core means that it would require an
amount of work to fix issues in it, like bad printk's
on it, and to document it on some future, like other kAPI
headers. It simply not worth the effort for something that
seems to be deprecated, as no new drivers use it.

So, move it out of the core, by moving it to pci/ttpci
directory, where av7110 driver is kept, and copy the two
routines used by ttyusb_dec directly into its code.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 600 insertions, 0 deletions

diff --git a/drivers/media/pci/ttpci/dvb_filter.c b/drivers/media/pci/ttpci/dvb_filter.c
new file mode 100644
index 000000000000..6395812ed1f1
--- /dev/null
+++ b/drivers/media/pci/ttpci/dvb_filter.c
@@ -0,0 +1,600 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include "dvb_filter.h"
+
+#if 0
+static unsigned int bitrates[3][16] =
+{{0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0},
+ {0,32,48,56,64,80,96,112,128,160,192,224,256,320,384,0},
+ {0,32,40,48,56,64,80,96,112,128,160,192,224,256,320,0}};
+#endif
+
+static u32 freq[4] = {480, 441, 320, 0};
+
+static unsigned int ac3_bitrates[32] =
+    {32,40,48,56,64,80,96,112,128,160,192,224,256,320,384,448,512,576,640,
+     0,0,0,0,0,0,0,0,0,0,0,0,0};
+
+static u32 ac3_frames[3][32] =
+    {{64,80,96,112,128,160,192,224,256,320,384,448,512,640,768,896,1024,
+      1152,1280,0,0,0,0,0,0,0,0,0,0,0,0,0},
+     {69,87,104,121,139,174,208,243,278,348,417,487,557,696,835,975,1114,
+      1253,1393,0,0,0,0,0,0,0,0,0,0,0,0,0},
+     {96,120,144,168,192,240,288,336,384,480,576,672,768,960,1152,1344,
+      1536,1728,1920,0,0,0,0,0,0,0,0,0,0,0,0,0}};
+
+
+
+#if 0
+static void setup_ts2pes(ipack *pa, ipack *pv, u16 *pida, u16 *pidv,
+		  void (*pes_write)(u8 *buf, int count, void *data),
+		  void *priv)
+{
+	dvb_filter_ipack_init(pa, IPACKS, pes_write);
+	dvb_filter_ipack_init(pv, IPACKS, pes_write);
+	pa->pid = pida;
+	pv->pid = pidv;
+	pa->data = priv;
+	pv->data = priv;
+}
+#endif
+
+#if 0
+static void ts_to_pes(ipack *p, u8 *buf) // don't need count (=188)
+{
+	u8 off = 0;
+
+	if (!buf || !p ){
+		printk("NULL POINTER IDIOT\n");
+		return;
+	}
+	if (buf[1]&PAY_START) {
+		if (p->plength == MMAX_PLENGTH-6 && p->found>6){
+			p->plength = p->found-6;
+			p->found = 0;
+			send_ipack(p);
+			dvb_filter_ipack_reset(p);
+		}
+	}
+	if (buf[3] & ADAPT_FIELD) {  // adaptation field?
+		off = buf[4] + 1;
+		if (off+4 > 187) return;
+	}
+	dvb_filter_instant_repack(buf+4+off, TS_SIZE-4-off, p);
+}
+#endif
+
+#if 0
+/* needs 5 byte input, returns picture coding type*/
+static int read_picture_header(u8 *headr, struct mpg_picture *pic, int field, int pr)
+{
+	u8 pct;
+
+	if (pr) printk( "Pic header: ");
+	pic->temporal_reference[field] = (( headr[0] << 2 ) |
+					  (headr[1] & 0x03) )& 0x03ff;
+	if (pr) printk( " temp ref: 0x%04x", pic->temporal_reference[field]);
+
+	pct = ( headr[1] >> 2 ) & 0x07;
+	pic->picture_coding_type[field] = pct;
+	if (pr) {
+		switch(pct){
+			case I_FRAME:
+				printk( "  I-FRAME");
+				break;
+			case B_FRAME:
+				printk( "  B-FRAME");
+				break;
+			case P_FRAME:
+				printk( "  P-FRAME");
+				break;
+		}
+	}
+
+
+	pic->vinfo.vbv_delay  = (( headr[1] >> 5 ) | ( headr[2] << 3) |
+				 ( (headr[3] & 0x1F) << 11) ) & 0xffff;
+
+	if (pr) printk( " vbv delay: 0x%04x", pic->vinfo.vbv_delay);
+
+	pic->picture_header_parameter = ( headr[3] & 0xe0 ) |
+		((headr[4] & 0x80) >> 3);
+
+	if ( pct == B_FRAME ){
+		pic->picture_header_parameter |= ( headr[4] >> 3 ) & 0x0f;
+	}
+	if (pr) printk( " pic head param: 0x%x",
+			pic->picture_header_parameter);
+
+	return pct;
+}
+#endif
+
+#if 0
+/* needs 4 byte input */
+static int read_gop_header(u8 *headr, struct mpg_picture *pic, int pr)
+{
+	if (pr) printk("GOP header: ");
+
+	pic->time_code  = (( headr[0] << 17 ) | ( headr[1] << 9) |
+			   ( headr[2] << 1 ) | (headr[3] &0x01)) & 0x1ffffff;
+
+	if (pr) printk(" time: %d:%d.%d ", (headr[0]>>2)& 0x1F,
+		       ((headr[0]<<4)& 0x30)| ((headr[1]>>4)& 0x0F),
+		       ((headr[1]<<3)& 0x38)| ((headr[2]>>5)& 0x0F));
+
+	if ( ( headr[3] & 0x40 ) != 0 ){
+		pic->closed_gop = 1;
+	} else {
+		pic->closed_gop = 0;
+	}
+	if (pr) printk("closed: %d", pic->closed_gop);
+
+	if ( ( headr[3] & 0x20 ) != 0 ){
+		pic->broken_link = 1;
+	} else {
+		pic->broken_link = 0;
+	}
+	if (pr) printk(" broken: %d\n", pic->broken_link);
+
+	return 0;
+}
+#endif
+
+#if 0
+/* needs 8 byte input */
+static int read_sequence_header(u8 *headr, struct dvb_video_info *vi, int pr)
+{
+	int sw;
+	int form = -1;
+
+	if (pr) printk("Reading sequence header\n");
+
+	vi->horizontal_size	= ((headr[1] &0xF0) >> 4) | (headr[0] << 4);
+	vi->vertical_size	= ((headr[1] &0x0F) << 8) | (headr[2]);
+
+	sw = (int)((headr[3]&0xF0) >> 4) ;
+
+	switch( sw ){
+	case 1:
+		if (pr)
+			printk("Videostream: ASPECT: 1:1");
+		vi->aspect_ratio = 100;
+		break;
+	case 2:
+		if (pr)
+			printk("Videostream: ASPECT: 4:3");
+		vi->aspect_ratio = 133;
+		break;
+	case 3:
+		if (pr)
+			printk("Videostream: ASPECT: 16:9");
+		vi->aspect_ratio = 177;
+		break;
+	case 4:
+		if (pr)
+			printk("Videostream: ASPECT: 2.21:1");
+		vi->aspect_ratio = 221;
+		break;
+
+	case 5 ... 15:
+		if (pr)
+			printk("Videostream: ASPECT: reserved");
+		vi->aspect_ratio = 0;
+		break;
+
+	default:
+		vi->aspect_ratio = 0;
+		return -1;
+	}
+
+	if (pr)
+		printk("  Size = %dx%d",vi->horizontal_size,vi->vertical_size);
+
+	sw = (int)(headr[3]&0x0F);
+
+	switch ( sw ) {
+	case 1:
+		if (pr)
+			printk("  FRate: 23.976 fps");
+		vi->framerate = 23976;
+		form = -1;
+		break;
+	case 2:
+		if (pr)
+			printk("  FRate: 24 fps");
+		vi->framerate = 24000;
+		form = -1;
+		break;
+	case 3:
+		if (pr)
+			printk("  FRate: 25 fps");
+		vi->framerate = 25000;
+		form = VIDEO_MODE_PAL;
+		break;
+	case 4:
+		if (pr)
+			printk("  FRate: 29.97 fps");
+		vi->framerate = 29970;
+		form = VIDEO_MODE_NTSC;
+		break;
+	case 5:
+		if (pr)
+			printk("  FRate: 30 fps");
+		vi->framerate = 30000;
+		form = VIDEO_MODE_NTSC;
+		break;
+	case 6:
+		if (pr)
+			printk("  FRate: 50 fps");
+		vi->framerate = 50000;
+		form = VIDEO_MODE_PAL;
+		break;
+	case 7:
+		if (pr)
+			printk("  FRate: 60 fps");
+		vi->framerate = 60000;
+		form = VIDEO_MODE_NTSC;
+		break;
+	}
+
+	vi->bit_rate = (headr[4] << 10) | (headr[5] << 2) | (headr[6] & 0x03);
+
+	vi->vbv_buffer_size
+		= (( headr[6] & 0xF8) >> 3 ) | (( headr[7] & 0x1F )<< 5);
+
+	if (pr){
+		printk("  BRate: %d Mbit/s",4*(vi->bit_rate)/10000);
+		printk("  vbvbuffer %d",16*1024*(vi->vbv_buffer_size));
+		printk("\n");
+	}
+
+	vi->video_format = form;
+
+	return 0;
+}
+#endif
+
+
+#if 0
+static int get_vinfo(u8 *mbuf, int count, struct dvb_video_info *vi, int pr)
+{
+	u8 *headr;
+	int found = 0;
+	int c = 0;
+
+	while (found < 4 && c+4 < count){
+		u8 *b;
+
+		b = mbuf+c;
+		if ( b[0] == 0x00 && b[1] == 0x00 && b[2] == 0x01
+		     && b[3] == 0xb3) found = 4;
+		else {
+			c++;
+		}
+	}
+
+	if (! found) return -1;
+	c += 4;
+	if (c+12 >= count) return -1;
+	headr = mbuf+c;
+	if (read_sequence_header(headr, vi, pr) < 0) return -1;
+	vi->off = c-4;
+	return 0;
+}
+#endif
+
+
+#if 0
+static int get_ainfo(u8 *mbuf, int count, struct dvb_audio_info *ai, int pr)
+{
+	u8 *headr;
+	int found = 0;
+	int c = 0;
+	int fr = 0;
+
+	while (found < 2 && c < count){
+		u8 b[2];
+		memcpy( b, mbuf+c, 2);
+
+		if ( b[0] == 0xff && (b[1] & 0xf8) == 0xf8)
+			found = 2;
+		else {
+			c++;
+		}
+	}
+
+	if (!found) return -1;
+
+	if (c+3 >= count) return -1;
+	headr = mbuf+c;
+
+	ai->layer = (headr[1] & 0x06) >> 1;
+
+	if (pr)
+		printk("Audiostream: Layer: %d", 4-ai->layer);
+
+
+	ai->bit_rate = bitrates[(3-ai->layer)][(headr[2] >> 4 )]*1000;
+
+	if (pr){
+		if (ai->bit_rate == 0)
+			printk("  Bit rate: free");
+		else if (ai->bit_rate == 0xf)
+			printk("  BRate: reserved");
+		else
+			printk("  BRate: %d kb/s", ai->bit_rate/1000);
+	}
+
+	fr = (headr[2] & 0x0c ) >> 2;
+	ai->frequency = freq[fr]*100;
+	if (pr){
+		if (ai->frequency == 3)
+			printk("  Freq: reserved\n");
+		else
+			printk("  Freq: %d kHz\n",ai->frequency);
+
+	}
+	ai->off = c;
+	return 0;
+}
+#endif
+
+
+int dvb_filter_get_ac3info(u8 *mbuf, int count, struct dvb_audio_info *ai, int pr)
+{
+	u8 *headr;
+	int found = 0;
+	int c = 0;
+	u8 frame = 0;
+	int fr = 0;
+
+	while ( !found  && c < count){
+		u8 *b = mbuf+c;
+
+		if ( b[0] == 0x0b &&  b[1] == 0x77 )
+			found = 1;
+		else {
+			c++;
+		}
+	}
+
+	if (!found) return -1;
+	if (pr)
+		printk("Audiostream: AC3");
+
+	ai->off = c;
+	if (c+5 >= count) return -1;
+
+	ai->layer = 0;  // 0 for AC3
+	headr = mbuf+c+2;
+
+	frame = (headr[2]&0x3f);
+	ai->bit_rate = ac3_bitrates[frame >> 1]*1000;
+
+	if (pr)
+		printk("  BRate: %d kb/s", (int) ai->bit_rate/1000);
+
+	ai->frequency = (headr[2] & 0xc0 ) >> 6;
+	fr = (headr[2] & 0xc0 ) >> 6;
+	ai->frequency = freq[fr]*100;
+	if (pr) printk ("  Freq: %d Hz\n", (int) ai->frequency);
+
+
+	ai->framesize = ac3_frames[fr][frame >> 1];
+	if ((frame & 1) &&  (fr == 1)) ai->framesize++;
+	ai->framesize = ai->framesize << 1;
+	if (pr) printk ("  Framesize %d\n",(int) ai->framesize);
+
+
+	return 0;
+}
+
+
+#if 0
+static u8 *skip_pes_header(u8 **bufp)
+{
+	u8 *inbuf = *bufp;
+	u8 *buf = inbuf;
+	u8 *pts = NULL;
+	int skip = 0;
+
+	static const int mpeg1_skip_table[16] = {
+		1, 0xffff,      5,     10, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff
+	};
+
+
+	if ((inbuf[6] & 0xc0) == 0x80){ /* mpeg2 */
+		if (buf[7] & PTS_ONLY)
+			pts = buf+9;
+		else pts = NULL;
+		buf = inbuf + 9 + inbuf[8];
+	} else {        /* mpeg1 */
+		for (buf = inbuf + 6; *buf == 0xff; buf++)
+			if (buf == inbuf + 6 + 16) {
+				break;
+			}
+		if ((*buf & 0xc0) == 0x40)
+			buf += 2;
+		skip = mpeg1_skip_table [*buf >> 4];
+		if (skip == 5 || skip == 10) pts = buf;
+		else pts = NULL;
+
+		buf += mpeg1_skip_table [*buf >> 4];
+	}
+
+	*bufp = buf;
+	return pts;
+}
+#endif
+
+#if 0
+static void initialize_quant_matrix( u32 *matrix )
+{
+	int i;
+
+	matrix[0]  = 0x08101013;
+	matrix[1]  = 0x10131616;
+	matrix[2]  = 0x16161616;
+	matrix[3]  = 0x1a181a1b;
+	matrix[4]  = 0x1b1b1a1a;
+	matrix[5]  = 0x1a1a1b1b;
+	matrix[6]  = 0x1b1d1d1d;
+	matrix[7]  = 0x2222221d;
+	matrix[8]  = 0x1d1d1b1b;
+	matrix[9]  = 0x1d1d2020;
+	matrix[10] = 0x22222526;
+	matrix[11] = 0x25232322;
+	matrix[12] = 0x23262628;
+	matrix[13] = 0x28283030;
+	matrix[14] = 0x2e2e3838;
+	matrix[15] = 0x3a454553;
+
+	for ( i = 16 ; i < 32 ; i++ )
+		matrix[i] = 0x10101010;
+}
+#endif
+
+#if 0
+static void initialize_mpg_picture(struct mpg_picture *pic)
+{
+	int i;
+
+	/* set MPEG1 */
+	pic->mpeg1_flag = 1;
+	pic->profile_and_level = 0x4A ;        /* MP@LL */
+	pic->progressive_sequence = 1;
+	pic->low_delay = 0;
+
+	pic->sequence_display_extension_flag = 0;
+	for ( i = 0 ; i < 4 ; i++ ){
+		pic->frame_centre_horizontal_offset[i] = 0;
+		pic->frame_centre_vertical_offset[i] = 0;
+	}
+	pic->last_frame_centre_horizontal_offset = 0;
+	pic->last_frame_centre_vertical_offset = 0;
+
+	pic->picture_display_extension_flag[0] = 0;
+	pic->picture_display_extension_flag[1] = 0;
+	pic->sequence_header_flag = 0;
+	pic->gop_flag = 0;
+	pic->sequence_end_flag = 0;
+}
+#endif
+
+#if 0
+static void mpg_set_picture_parameter( int32_t field_type, struct mpg_picture *pic )
+{
+	int16_t last_h_offset;
+	int16_t last_v_offset;
+
+	int16_t *p_h_offset;
+	int16_t *p_v_offset;
+
+	if ( pic->mpeg1_flag ){
+		pic->picture_structure[field_type] = VIDEO_FRAME_PICTURE;
+		pic->top_field_first = 0;
+		pic->repeat_first_field = 0;
+		pic->progressive_frame = 1;
+		pic->picture_coding_parameter = 0x000010;
+	}
+
+	/* Reset flag */
+	pic->picture_display_extension_flag[field_type] = 0;
+
+	last_h_offset = pic->last_frame_centre_horizontal_offset;
+	last_v_offset = pic->last_frame_centre_vertical_offset;
+	if ( field_type == FIRST_FIELD ){
+		p_h_offset = pic->frame_centre_horizontal_offset;
+		p_v_offset = pic->frame_centre_vertical_offset;
+		*p_h_offset = last_h_offset;
+		*(p_h_offset + 1) = last_h_offset;
+		*(p_h_offset + 2) = last_h_offset;
+		*p_v_offset = last_v_offset;
+		*(p_v_offset + 1) = last_v_offset;
+		*(p_v_offset + 2) = last_v_offset;
+	} else {
+		pic->frame_centre_horizontal_offset[3] = last_h_offset;
+		pic->frame_centre_vertical_offset[3] = last_v_offset;
+	}
+}
+#endif
+
+#if 0
+static void init_mpg_picture( struct mpg_picture *pic, int chan, int32_t field_type)
+{
+	pic->picture_header = 0;
+	pic->sequence_header_data
+		= ( INIT_HORIZONTAL_SIZE << 20 )
+			| ( INIT_VERTICAL_SIZE << 8 )
+			| ( INIT_ASPECT_RATIO << 4 )
+			| ( INIT_FRAME_RATE );
+	pic->mpeg1_flag = 0;
+	pic->vinfo.horizontal_size
+		= INIT_DISP_HORIZONTAL_SIZE;
+	pic->vinfo.vertical_size
+		= INIT_DISP_VERTICAL_SIZE;
+	pic->picture_display_extension_flag[field_type]
+		= 0;
+	pic->pts_flag[field_type] = 0;
+
+	pic->sequence_gop_header = 0;
+	pic->picture_header = 0;
+	pic->sequence_header_flag = 0;
+	pic->gop_flag = 0;
+	pic->sequence_end_flag = 0;
+	pic->sequence_display_extension_flag = 0;
+	pic->last_frame_centre_horizontal_offset = 0;
+	pic->last_frame_centre_vertical_offset = 0;
+	pic->channel = chan;
+}
+#endif
+
+void dvb_filter_pes2ts_init(struct dvb_filter_pes2ts *p2ts, unsigned short pid,
+			    dvb_filter_pes2ts_cb_t *cb, void *priv)
+{
+	unsigned char *buf=p2ts->buf;
+
+	buf[0]=0x47;
+	buf[1]=(pid>>8);
+	buf[2]=pid&0xff;
+	p2ts->cc=0;
+	p2ts->cb=cb;
+	p2ts->priv=priv;
+}
+
+int dvb_filter_pes2ts(struct dvb_filter_pes2ts *p2ts, unsigned char *pes,
+		      int len, int payload_start)
+{
+	unsigned char *buf=p2ts->buf;
+	int ret=0, rest;
+
+	//len=6+((pes[4]<<8)|pes[5]);
+
+	if (payload_start)
+		buf[1]|=0x40;
+	else
+		buf[1]&=~0x40;
+	while (len>=184) {
+		buf[3]=0x10|((p2ts->cc++)&0x0f);
+		memcpy(buf+4, pes, 184);
+		if ((ret=p2ts->cb(p2ts->priv, buf)))
+			return ret;
+		len-=184; pes+=184;
+		buf[1]&=~0x40;
+	}
+	if (!len)
+		return 0;
+	buf[3]=0x30|((p2ts->cc++)&0x0f);
+	rest=183-len;
+	if (rest) {
+		buf[5]=0x00;
+		if (rest-1)
+			memset(buf+6, 0xff, rest-1);
+	}
+	buf[4]=rest;
+	memcpy(buf+5+rest, pes, len);
+	return p2ts->cb(p2ts->priv, buf);
+}