From adbc75d3cf3691d649c8dac1f32ee21f332f0f4c Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Fri, 30 Jan 2009 22:33:02 -0500 Subject: cx18: Clean-up and enable sliced VBI handling From: Andy Walls Removed legacy ivtv state variables, added comments, and cleaned up sliced VBI related code. Enabled sliced VBI. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-vbi.c | 58 ++++++++++++++++++++++--------- 1 file changed, 41 insertions(+), 17 deletions(-) (limited to 'linux/drivers/media/video/cx18/cx18-vbi.c') diff --git a/linux/drivers/media/video/cx18/cx18-vbi.c b/linux/drivers/media/video/cx18/cx18-vbi.c index fb595bd54..38d26c42e 100644 --- a/linux/drivers/media/video/cx18/cx18-vbi.c +++ b/linux/drivers/media/video/cx18/cx18-vbi.c @@ -27,6 +27,16 @@ #include "cx18-queue.h" #include "cx18-av-core.h" +/* + * Raster Reference/Protection (RP) bytes, used in Start/End Active + * Video codes emitted from the digitzer in VIP 1.x mode, that flag the start + * of VBI sample or VBI ancilliary data regions in the digitial ratser line. + * + * Task FieldEven VerticalBlank HorizontalBlank 0 0 0 0 + */ +static const u8 raw_vbi_sav_rp[2] = { 0x20, 0x60 }; /* __V_, _FV_ */ +static const u8 sliced_vbi_eav_rp[2] = { 0xb0, 0xf0 }; /* T_VH, TFVH */ + static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) { int line = 0; @@ -34,10 +44,17 @@ static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) u32 linemask[2] = { 0, 0 }; unsigned short size; static const u8 mpeg_hdr_data[] = { - 0x00, 0x00, 0x01, 0xba, 0x44, 0x00, 0x0c, 0x66, - 0x24, 0x01, 0x01, 0xd1, 0xd3, 0xfa, 0xff, 0xff, - 0x00, 0x00, 0x01, 0xbd, 0x00, 0x1a, 0x84, 0x80, - 0x07, 0x21, 0x00, 0x5d, 0x63, 0xa7, 0xff, 0xff + /* MPEG-2 Program Pack */ + 0x00, 0x00, 0x01, 0xba, /* Prog Pack start code */ + 0x44, 0x00, 0x0c, 0x66, 0x24, 0x01, /* SCR, SCR Ext, markers */ + 0x01, 0xd1, 0xd3, /* Mux Rate, markers */ + 0xfa, 0xff, 0xff, /* Res, Suff cnt, Stuff */ + /* MPEG-2 Private Stream 1 PES Packet */ + 0x00, 0x00, 0x01, 0xbd, /* Priv Stream 1 start */ + 0x00, 0x1a, /* length */ + 0x84, 0x80, 0x07, /* flags, hdr data len */ + 0x21, 0x00, 0x5d, 0x63, 0xa7, /* PTS, markers */ + 0xff, 0xff /* stuffing */ }; const int sd = sizeof(mpeg_hdr_data); /* start of vbi data */ int idx = cx->vbi.frame % CX18_VBI_FRAMES; @@ -71,7 +88,7 @@ static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) memcpy(dst + sd + 4, dst + sd + 12, line * 43); size = 4 + ((43 * line + 3) & ~3); } else { - memcpy(dst + sd, "cx0", 4); + memcpy(dst + sd, "itv0", 4); memcpy(dst + sd + 4, &linemask[0], 8); size = 12 + ((43 * line + 3) & ~3); } @@ -90,10 +107,10 @@ static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) Returns new compressed size. */ static u32 compress_raw_buf(struct cx18 *cx, u8 *buf, u32 size) { - u32 line_size = cx->vbi.raw_decoder_line_size; + u32 line_size = vbi_active_samples; u32 lines = cx->vbi.count; - u8 sav1 = cx->vbi.raw_decoder_sav_odd_field; - u8 sav2 = cx->vbi.raw_decoder_sav_even_field; + u8 sav1 = raw_vbi_sav_rp[0]; + u8 sav2 = raw_vbi_sav_rp[1]; u8 *q = buf; u8 *p; int i; @@ -115,15 +132,16 @@ static u32 compress_raw_buf(struct cx18 *cx, u8 *buf, u32 size) /* Compressed VBI format, all found sliced blocks put next to one another Returns new compressed size */ static u32 compress_sliced_buf(struct cx18 *cx, u32 line, u8 *buf, - u32 size, u8 sav) + u32 size, u8 eav) { - u32 line_size = cx->vbi.sliced_decoder_line_size; struct v4l2_decode_vbi_line vbi; int i; + u32 line_size = cx->is_60hz ? vbi_hblank_samples_60Hz + : vbi_hblank_samples_50Hz; /* find the first valid line */ for (i = 0; i < size; i++, buf++) { - if (buf[0] == 0xff && !buf[1] && !buf[2] && buf[3] == sav) + if (buf[0] == 0xff && !buf[1] && !buf[2] && buf[3] == eav) break; } @@ -133,8 +151,8 @@ static u32 compress_sliced_buf(struct cx18 *cx, u32 line, u8 *buf, for (i = 0; i < size / line_size; i++) { u8 *p = buf + i * line_size; - /* Look for SAV code */ - if (p[0] != 0xff || p[1] || p[2] || p[3] != sav) + /* Look for EAV code */ + if (p[0] != 0xff || p[1] || p[2] || p[3] != eav) continue; vbi.p = p + 4; cx18_av_cmd(cx, VIDIOC_INT_DECODE_VBI_LINE, &vbi); @@ -159,6 +177,12 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, if (streamtype != CX18_ENC_STREAM_TYPE_VBI) return; + /* + * Note the CX23418 provides a 12 byte header, in it's raw VBI + * buffers to us, that we currently throw away: + * 0x3fffffff [4 bytes of something] [4 byte timestamp] + */ + /* Raw VBI data */ if (cx18_raw_vbi(cx)) { u8 type; @@ -173,7 +197,7 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, size = buf->bytesused = compress_raw_buf(cx, p, size); /* second field of the frame? */ - if (type == cx->vbi.raw_decoder_sav_even_field) { + if (type == raw_vbi_sav_rp[1]) { /* Dirty hack needed for backwards compatibility of old VBI software. */ p += size - 4; @@ -187,14 +211,14 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, cx18_buf_swap(buf); /* first field */ - lines = compress_sliced_buf(cx, 0, p, size / 2, - cx->vbi.sliced_decoder_sav_odd_field); + /* compress_sliced_buf() will skip the 12 bytes of header */ + lines = compress_sliced_buf(cx, 0, p, size / 2, sliced_vbi_eav_rp[0]); /* second field */ /* experimentation shows that the second half does not always begin at the exact address. So start a bit earlier (hence 32). */ lines = compress_sliced_buf(cx, lines, p + size / 2 - 32, - size / 2 + 32, cx->vbi.sliced_decoder_sav_even_field); + size / 2 + 32, sliced_vbi_eav_rp[1]); /* always return at least one empty line */ if (lines == 0) { cx->vbi.sliced_data[0].id = 0; -- cgit v1.2.3 From 343fbdd2e3f93d7a107012ecc1413cae5664e096 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sun, 1 Feb 2009 19:42:12 -0500 Subject: cx18: Fix presentation timestamp (PTS) for VBI buffers From: Andy Walls The old code from ivtv used a CX23415/6 PTS, which was simply left at 0 in the cx18 driver. Since the CX23418 gives us what I think is a PTS (or some other 90 kHz clock count) with each VBI buffer, this change has the cx18 driver use that as a PTS. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-vbi.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) (limited to 'linux/drivers/media/video/cx18/cx18-vbi.c') diff --git a/linux/drivers/media/video/cx18/cx18-vbi.c b/linux/drivers/media/video/cx18/cx18-vbi.c index 38d26c42e..d6e15e119 100644 --- a/linux/drivers/media/video/cx18/cx18-vbi.c +++ b/linux/drivers/media/video/cx18/cx18-vbi.c @@ -168,27 +168,28 @@ static u32 compress_sliced_buf(struct cx18 *cx, u32 line, u8 *buf, } void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, - u64 pts_stamp, int streamtype) + int streamtype) { u8 *p = (u8 *) buf->buf; + u32 *q = (u32 *) buf->buf; u32 size = buf->bytesused; + u32 pts; int lines; if (streamtype != CX18_ENC_STREAM_TYPE_VBI) return; + cx18_buf_swap(buf); + /* - * Note the CX23418 provides a 12 byte header, in it's raw VBI - * buffers to us, that we currently throw away: - * 0x3fffffff [4 bytes of something] [4 byte timestamp] + * The CX23418 provides a 12 byte header in it's raw VBI buffers to us: + * 0x3fffffff [4 bytes of something] [4 byte presentation time stamp?] */ /* Raw VBI data */ if (cx18_raw_vbi(cx)) { u8 type; - cx18_buf_swap(buf); - /* Skip 12 bytes of header that gets stuffed in */ size -= 12; memcpy(p, &buf->buf[12], size); @@ -208,7 +209,8 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, } /* Sliced VBI data with data insertion */ - cx18_buf_swap(buf); + + pts = (q[0] == 0x3fffffff) ? q[2] : 0; /* first field */ /* compress_sliced_buf() will skip the 12 bytes of header */ @@ -230,6 +232,6 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, memcpy(p, &cx->vbi.sliced_data[0], size); if (cx->vbi.insert_mpeg) - copy_vbi_data(cx, lines, pts_stamp); + copy_vbi_data(cx, lines, pts); cx->vbi.frame++; } -- cgit v1.2.3 From 044e05207bc29e80220289d29bcae6780ec904ac Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Fri, 6 Feb 2009 23:31:22 -0500 Subject: cx18: Fix sliced VBI PTS and fix artifacts in last raw line of field From: Andy Walls Fixed an endianess problem with the collection of the PTS from the VBI buffer given to us by the encoder. Also extrapolated the last 12 bytes of the last line of each field, to remove artifacts created by removing the first 12 bytes of each field for raw VBI. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-vbi.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) (limited to 'linux/drivers/media/video/cx18/cx18-vbi.c') diff --git a/linux/drivers/media/video/cx18/cx18-vbi.c b/linux/drivers/media/video/cx18/cx18-vbi.c index d6e15e119..d8e7d371c 100644 --- a/linux/drivers/media/video/cx18/cx18-vbi.c +++ b/linux/drivers/media/video/cx18/cx18-vbi.c @@ -179,6 +179,10 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, if (streamtype != CX18_ENC_STREAM_TYPE_VBI) return; + /* + * The CX23418 sends us data that is 32 bit LE swapped, but we want + * the raw VBI bytes in the order they were in the raster line + */ cx18_buf_swap(buf); /* @@ -190,17 +194,27 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, if (cx18_raw_vbi(cx)) { u8 type; - /* Skip 12 bytes of header that gets stuffed in */ + /* + * We've set up to get a field's worth of VBI data at a time. + * Skip 12 bytes of header prefixing the first field or the + * last 12 bytes in the last VBI line from the first field that + * prefixes the second field. + */ size -= 12; memcpy(p, &buf->buf[12], size); type = p[3]; + /* Extrapolate the last 12 bytes of the field's last line */ + memset(&p[size], (int) p[size - 1], 12); + size = buf->bytesused = compress_raw_buf(cx, p, size); - /* second field of the frame? */ if (type == raw_vbi_sav_rp[1]) { - /* Dirty hack needed for backwards - compatibility of old VBI software. */ + /* + * Hack needed for compatibility with old VBI software. + * Write the frame # at the end of the last line of the + * second field + */ p += size - 4; memcpy(p, &cx->vbi.frame, 4); cx->vbi.frame++; @@ -210,7 +224,7 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, /* Sliced VBI data with data insertion */ - pts = (q[0] == 0x3fffffff) ? q[2] : 0; + pts = (be32_to_cpu(q[0] == 0x3fffffff)) ? be32_to_cpu(q[2]) : 0; /* first field */ /* compress_sliced_buf() will skip the 12 bytes of header */ -- cgit v1.2.3 From 40b47e5cc5ca4d00352b85e68426a50b7edae2aa Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sat, 7 Feb 2009 13:47:28 -0500 Subject: cx18: Process Raw VBI on a whole frame basis; fix VBI buffer size From: Andy Walls The cx23418 appears to send Raw VBI buffers with a PTS on a per frame basis, not per field, so process Raw VBI on a whole frame basis and reduce some complexity. Fix VBI buffer size computation to handle a whole frame of Raw VBI for a 625 line system, which is the worst case and will work for 525 lines systems as well. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-vbi.c | 31 +++++++++++++------------------ 1 file changed, 13 insertions(+), 18 deletions(-) (limited to 'linux/drivers/media/video/cx18/cx18-vbi.c') diff --git a/linux/drivers/media/video/cx18/cx18-vbi.c b/linux/drivers/media/video/cx18/cx18-vbi.c index d8e7d371c..52082d4a1 100644 --- a/linux/drivers/media/video/cx18/cx18-vbi.c +++ b/linux/drivers/media/video/cx18/cx18-vbi.c @@ -103,12 +103,11 @@ static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) } /* Compress raw VBI format, removes leading SAV codes and surplus space - after the field. - Returns new compressed size. */ + after the frame. Returns new compressed size. */ static u32 compress_raw_buf(struct cx18 *cx, u8 *buf, u32 size) { u32 line_size = vbi_active_samples; - u32 lines = cx->vbi.count; + u32 lines = cx->vbi.count * 2; u8 sav1 = raw_vbi_sav_rp[0]; u8 sav2 = raw_vbi_sav_rp[1]; u8 *q = buf; @@ -195,30 +194,26 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, u8 type; /* - * We've set up to get a field's worth of VBI data at a time. - * Skip 12 bytes of header prefixing the first field or the - * last 12 bytes in the last VBI line from the first field that - * prefixes the second field. + * We've set up to get a frame's worth of VBI data at a time. + * Skip 12 bytes of header prefixing the first field. */ size -= 12; memcpy(p, &buf->buf[12], size); type = p[3]; - /* Extrapolate the last 12 bytes of the field's last line */ + /* Extrapolate the last 12 bytes of the frame's last line */ memset(&p[size], (int) p[size - 1], 12); + size += 12; size = buf->bytesused = compress_raw_buf(cx, p, size); - if (type == raw_vbi_sav_rp[1]) { - /* - * Hack needed for compatibility with old VBI software. - * Write the frame # at the end of the last line of the - * second field - */ - p += size - 4; - memcpy(p, &cx->vbi.frame, 4); - cx->vbi.frame++; - } + /* + * Hack needed for compatibility with old VBI software. + * Write the frame # at the last 4 bytes of the frame + */ + p += size - 4; + memcpy(p, &cx->vbi.frame, 4); + cx->vbi.frame++; return; } -- cgit v1.2.3 From f9263f9b94e9a6f28065616efc07eb78d000a662 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sun, 8 Feb 2009 20:40:04 -0500 Subject: cx18: Finally get sliced VBI working - for 525 line 60 Hz systems at least From: Andy Walls Sliced VBI, in the manner that ivtv implements it as a separate data stream, now works for 525 line 60 Hz systems like NTSC-M. It may work for 625 line 50 Hz systems, but I have more engineering work to do, to verify it is operating properly. Sliced data insertion into the MPEG PS should be working, but is untested. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-vbi.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) (limited to 'linux/drivers/media/video/cx18/cx18-vbi.c') diff --git a/linux/drivers/media/video/cx18/cx18-vbi.c b/linux/drivers/media/video/cx18/cx18-vbi.c index 52082d4a1..8e6f4d4af 100644 --- a/linux/drivers/media/video/cx18/cx18-vbi.c +++ b/linux/drivers/media/video/cx18/cx18-vbi.c @@ -221,13 +221,22 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, pts = (be32_to_cpu(q[0] == 0x3fffffff)) ? be32_to_cpu(q[2]) : 0; + /* + * For calls to compress_sliced_buf(), ensure there are an integral + * number of lines by shifting the real data up over the 12 bytes header + * that got stuffed in. + * FIXME - there's a smarter way to do this with pointers, but for some + * reason I can't get it to work correctly right now. + */ + memcpy(p, &buf->buf[12], size-12); + /* first field */ - /* compress_sliced_buf() will skip the 12 bytes of header */ lines = compress_sliced_buf(cx, 0, p, size / 2, sliced_vbi_eav_rp[0]); - /* second field */ - /* experimentation shows that the second half does not always - begin at the exact address. So start a bit earlier - (hence 32). */ + /* + * second field + * In case the second half does not always begin at the exact address, + * start a bit earlier (hence 32). + */ lines = compress_sliced_buf(cx, lines, p + size / 2 - 32, size / 2 + 32, sliced_vbi_eav_rp[1]); /* always return at least one empty line */ -- cgit v1.2.3