aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/cx18/cx18-av-core.c11
-rw-r--r--drivers/media/video/cx18/cx18-av-vbi.c92
-rw-r--r--drivers/media/video/cx18/cx18-cards.c8
-rw-r--r--drivers/media/video/cx18/cx18-cards.h3
-rw-r--r--drivers/media/video/cx18/cx18-controls.c4
-rw-r--r--drivers/media/video/cx18/cx18-driver.c49
-rw-r--r--drivers/media/video/cx18/cx18-driver.h142
-rw-r--r--drivers/media/video/cx18/cx18-fileops.c54
-rw-r--r--drivers/media/video/cx18/cx18-ioctl.c77
-rw-r--r--drivers/media/video/cx18/cx18-streams.c45
-rw-r--r--drivers/media/video/cx18/cx18-vbi.c58
11 files changed, 383 insertions, 160 deletions
diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c
index 091f0cac063..1d197649446 100644
--- a/drivers/media/video/cx18/cx18-av-core.c
+++ b/drivers/media/video/cx18/cx18-av-core.c
@@ -169,9 +169,14 @@ static void cx18_av_initialize(struct cx18 *cx)
/* Set VGA_TRACK_RANGE to 0x20 */
cx18_av_and_or4(cx, CXADEC_DFE_CTRL2, 0xFFFF00FF, 0x00002000);
- /* Enable VBI capture */
- cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4010253F);
- /* cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4010253E); */
+ /*
+ * Initial VBI setup
+ * VIP-1.1, 10 bit mode, enable Raw, disable sliced,
+ * don't clamp raw samples when codes are in use, 4 byte user D-words,
+ * programmed IDID, RP code V bit transition on VBLANK, data during
+ * blanking intervals
+ */
+ cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4010252e);
/* Set the video input.
The setting in MODE_CTRL gets lost when we do the above setup */
diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c
index 1527ea4f6b0..72325d774a6 100644
--- a/drivers/media/video/cx18/cx18-av-vbi.c
+++ b/drivers/media/video/cx18/cx18-av-vbi.c
@@ -24,6 +24,52 @@
#include "cx18-driver.h"
+/*
+ * For sliced VBI output, we set up to use VIP-1.1, 10-bit mode,
+ * NN counts 4 bytes Dwords, an IDID of 0x00 0x80 or one with the VBI line #.
+ * Thus, according to the VIP-2 Spec, our VBI ancillary data lines
+ * (should!) look like:
+ * 4 byte EAV code: 0xff 0x00 0x00 0xRP
+ * unknown number of possible idle bytes
+ * 3 byte Anc data preamble: 0x00 0xff 0xff
+ * 1 byte data identifier: ne010iii (parity bits, 010, DID bits)
+ * 1 byte secondary data id: nessssss (parity bits, SDID bits)
+ * 1 byte data word count: necccccc (parity bits, NN Dword count)
+ * 2 byte Internal DID: 0x00 0x80 (programmed value)
+ * 4*NN data bytes
+ * 1 byte checksum
+ * Fill bytes needed to fil out to 4*NN bytes of payload
+ *
+ * The RP codes for EAVs when in VIP-1.1 mode, not in raw mode, &
+ * in the vertical blanking interval are:
+ * 0xb0 (Task 0 VerticalBlank HorizontalBlank 0 0 0 0)
+ * 0xf0 (Task EvenField VerticalBlank HorizontalBlank 0 0 0 0)
+ *
+ * Since the V bit is only allowed to toggle in the EAV RP code, just
+ * before the first active region line and for active lines, they are:
+ * 0x90 (Task 0 0 HorizontalBlank 0 0 0 0)
+ * 0xd0 (Task EvenField 0 HorizontalBlank 0 0 0 0)
+ *
+ * The user application DID bytes we care about are:
+ * 0x91 (1 0 010 0 !ActiveLine AncDataPresent)
+ * 0x55 (0 1 010 2ndField !ActiveLine AncDataPresent)
+ *
+ */
+static const u8 sliced_vbi_did[2] = { 0x91, 0x55 };
+
+struct vbi_anc_data {
+ /* u8 eav[4]; */
+ /* u8 idle[]; Variable number of idle bytes */
+ u8 preamble[3];
+ u8 did;
+ u8 sdid;
+ u8 data_count;
+ u8 idid[2];
+ u8 payload[1]; /* 4*data_count of payload */
+ /* u8 checksum; */
+ /* u8 fill[]; Variable number of fill bytes */
+};
+
static int odd_parity(u8 c)
{
c ^= (c >> 4);
@@ -96,7 +142,7 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg)
0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
0, V4L2_SLICED_WSS_625, 0, /* 4 */
V4L2_SLICED_CAPTION_525, /* 6 */
- 0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
+ V4L2_SLICED_VPS, 0, 0, 0, 0, /* 7 - unlike cx25840 */
0, 0, 0, 0
};
int is_pal = !(state->std & V4L2_STD_525_60);
@@ -220,47 +266,53 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg)
case VIDIOC_INT_DECODE_VBI_LINE:
{
struct v4l2_decode_vbi_line *vbi = arg;
- u8 *p = vbi->p;
- int id1, id2, l, err = 0;
-
- if (p[0] || p[1] != 0xff || p[2] != 0xff ||
- (p[3] != 0x55 && p[3] != 0x91)) {
+ u8 *p;
+ struct vbi_anc_data *anc = (struct vbi_anc_data *) vbi->p;
+ int did, sdid, l, err = 0;
+
+ /*
+ * Check for the ancillary data header for sliced VBI
+ */
+ if (anc->preamble[0] ||
+ anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||
+ (anc->did != sliced_vbi_did[0] &&
+ anc->did != sliced_vbi_did[1])) {
vbi->line = vbi->type = 0;
break;
}
- p += 4;
- id1 = p[-1];
- id2 = p[0] & 0xf;
- l = p[2] & 0x3f;
+ did = anc->did;
+ sdid = anc->sdid & 0xf;
+ l = anc->idid[0] & 0x3f;
l += state->vbi_line_offset;
- p += 4;
+ p = anc->payload;
- switch (id2) {
+ /* Decode the SDID set by the slicer */
+ switch (sdid) {
case 1:
- id2 = V4L2_SLICED_TELETEXT_B;
+ sdid = V4L2_SLICED_TELETEXT_B;
break;
case 4:
- id2 = V4L2_SLICED_WSS_625;
+ sdid = V4L2_SLICED_WSS_625;
break;
case 6:
- id2 = V4L2_SLICED_CAPTION_525;
+ sdid = V4L2_SLICED_CAPTION_525;
err = !odd_parity(p[0]) || !odd_parity(p[1]);
break;
- case 9:
- id2 = V4L2_SLICED_VPS;
+ case 7: /* Differs from cx25840 */
+ sdid = V4L2_SLICED_VPS;
if (decode_vps(p, p) != 0)
err = 1;
break;
default:
- id2 = 0;
+ sdid = 0;
err = 1;
break;
}
- vbi->type = err ? 0 : id2;
+ vbi->type = err ? 0 : sdid;
vbi->line = err ? 0 : l;
- vbi->is_second_field = err ? 0 : (id1 == 0x55);
+ vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);
vbi->p = p;
break;
}
diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c
index a0d4d2e49d1..6e2105ac2bc 100644
--- a/drivers/media/video/cx18/cx18-cards.c
+++ b/drivers/media/video/cx18/cx18-cards.c
@@ -51,7 +51,7 @@ static struct cx18_card_tuner_i2c cx18_i2c_std = {
static const struct cx18_card cx18_card_hvr1600_esmt = {
.type = CX18_CARD_HVR_1600_ESMT,
.name = "Hauppauge HVR-1600",
- .comment = "Raw VBI supported; Sliced VBI is not yet supported\n",
+ .comment = "Simultaneous Digital and Analog TV capture supported\n",
.v4l2_capabilities = CX18_CAP_ENCODER,
.hw_audio_ctrl = CX18_HW_CX23418,
.hw_muxer = CX18_HW_CS5345,
@@ -97,7 +97,7 @@ static const struct cx18_card cx18_card_hvr1600_esmt = {
static const struct cx18_card cx18_card_hvr1600_samsung = {
.type = CX18_CARD_HVR_1600_SAMSUNG,
.name = "Hauppauge HVR-1600 (Preproduction)",
- .comment = "Raw VBI supported; Sliced VBI is not yet supported\n",
+ .comment = "Simultaneous Digital and Analog TV capture supported\n",
.v4l2_capabilities = CX18_CAP_ENCODER,
.hw_audio_ctrl = CX18_HW_CX23418,
.hw_muxer = CX18_HW_CS5345,
@@ -152,7 +152,7 @@ static const struct cx18_card_pci_info cx18_pci_h900[] = {
static const struct cx18_card cx18_card_h900 = {
.type = CX18_CARD_COMPRO_H900,
.name = "Compro VideoMate H900",
- .comment = "Raw VBI supported; Sliced VBI is not yet supported\n",
+ .comment = "Analog TV capture supported\n",
.v4l2_capabilities = CX18_CAP_ENCODER,
.hw_audio_ctrl = CX18_HW_CX23418,
.hw_all = CX18_HW_TUNER,
@@ -249,7 +249,7 @@ static const struct cx18_card_pci_info cx18_pci_cnxt_raptor_pal[] = {
static const struct cx18_card cx18_card_cnxt_raptor_pal = {
.type = CX18_CARD_CNXT_RAPTOR_PAL,
.name = "Conexant Raptor PAL/SECAM",
- .comment = "Raw VBI supported; Sliced VBI is not yet supported\n",
+ .comment = "Analog TV capture supported\n",
.v4l2_capabilities = CX18_CAP_ENCODER,
.hw_audio_ctrl = CX18_HW_CX23418,
.hw_muxer = CX18_HW_GPIO,
diff --git a/drivers/media/video/cx18/cx18-cards.h b/drivers/media/video/cx18/cx18-cards.h
index 6fa7bcb42dd..f8ee29f102d 100644
--- a/drivers/media/video/cx18/cx18-cards.h
+++ b/drivers/media/video/cx18/cx18-cards.h
@@ -49,8 +49,7 @@
/* V4L2 capability aliases */
#define CX18_CAP_ENCODER (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | \
V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | \
- V4L2_CAP_VBI_CAPTURE)
-/* | V4L2_CAP_SLICED_VBI_CAPTURE) not yet */
+ V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)
struct cx18_card_video_input {
u8 video_type; /* video input type */
diff --git a/drivers/media/video/cx18/cx18-controls.c b/drivers/media/video/cx18/cx18-controls.c
index 17edf305d64..6af4d5c190e 100644
--- a/drivers/media/video/cx18/cx18-controls.c
+++ b/drivers/media/video/cx18/cx18-controls.c
@@ -178,8 +178,8 @@ static int cx18_setup_vbi_fmt(struct cx18 *cx, enum v4l2_mpeg_stream_vbi_fmt fmt
int i;
for (i = 0; i < CX18_VBI_FRAMES; i++) {
- /* Yuck, hardcoded. Needs to be a define */
- cx->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
+ cx->vbi.sliced_mpeg_data[i] =
+ kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
if (cx->vbi.sliced_mpeg_data[i] == NULL) {
while (--i >= 0) {
kfree(cx->vbi.sliced_mpeg_data[i]);
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 062f1910e8d..842ce636e45 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -586,7 +586,8 @@ static int __devinit cx18_init_struct1(struct cx18 *cx)
(cx->params.video_temporal_filter_mode << 1) |
(cx->params.video_median_filter_type << 2);
cx->params.port = CX2341X_PORT_MEMORY;
- cx->params.capabilities = CX2341X_CAP_HAS_TS | CX2341X_CAP_HAS_AC3;
+ cx->params.capabilities =
+ CX2341X_CAP_HAS_TS | CX2341X_CAP_HAS_AC3 | CX2341X_CAP_HAS_SLICED_VBI;
init_waitqueue_head(&cx->cap_w);
init_waitqueue_head(&cx->mb_apu_waitq);
init_waitqueue_head(&cx->mb_cpu_waitq);
@@ -596,49 +597,6 @@ static int __devinit cx18_init_struct1(struct cx18 *cx)
cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
cx->vbi.sliced_in = &cx->vbi.in.fmt.sliced;
- /*
- * The VBI line sizes depend on the pixel clock and the horiz rate
- *
- * (1/Fh)*(2*Fp) = Samples/line
- * = 4 bytes EAV + Anc data in hblank + 4 bytes SAV + active samples
- *
- * Sliced VBI is sent as ancillary data during horizontal blanking
- * Raw VBI is sent as active video samples during vertcal blanking
- *
- * We use a BT.656 pxiel clock of 13.5 MHz and a BT.656 active line
- * length of 720 pixels @ 4:2:2 sampling. Thus...
- *
- * For systems that use a 15.734 kHz horizontal rate, such as
- * NTSC-M, PAL-M, PAL-60, and other 60 Hz/525 line systems, we have:
- *
- * (1/15.734 kHz) * 2 * 13.5 MHz = 1716 samples/line =
- * 4 bytes SAV + 268 bytes anc data + 4 bytes SAV + 1440 active samples
- *
- * For systems that use a 15.625 kHz horizontal rate, such as
- * PAL-B/G/H, PAL-I, SECAM-L and other 50 Hz/625 line systems, we have:
- *
- * (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line =
- * 4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples
- *
- */
-
- /* FIXME: init these based on tuner std & modify when std changes */
- /* CX18-AV-Core number of VBI samples output per horizontal line */
- cx->vbi.raw_decoder_line_size = 1444; /* 4 byte SAV + 2 * 720 */
- cx->vbi.sliced_decoder_line_size = 272; /* 60 Hz: 268+4, 50 Hz: 280+4 */
-
- /* CX18-AV-Core VBI samples/line possibly rounded up */
- cx->vbi.raw_size = 1444; /* Real max size is 1444 */
- cx->vbi.sliced_size = 284; /* Real max size is 284 */
-
- /*
- * CX18-AV-Core SAV/EAV RP codes in VIP 1.x mode
- * Task Field VerticalBlank HorizontalBlank 0 0 0 0
- */
- cx->vbi.raw_decoder_sav_odd_field = 0x20; /* V */
- cx->vbi.raw_decoder_sav_even_field = 0x60; /* FV */
- cx->vbi.sliced_decoder_sav_odd_field = 0xB0; /* T VH - actually EAV */
- cx->vbi.sliced_decoder_sav_even_field = 0xF0; /* TFVH - actually EAV */
return 0;
}
@@ -671,7 +629,6 @@ static void __devinit cx18_init_struct2(struct cx18 *cx)
cx->av_state.aud_input = CX18_AV_AUDIO8;
cx->av_state.audclk_freq = 48000;
cx->av_state.audmode = V4L2_TUNER_MODE_LANG1;
- /* FIXME - 8 is NTSC value, investigate */
cx->av_state.vbi_line_offset = 8;
}
@@ -936,7 +893,7 @@ static int __devinit cx18_probe(struct pci_dev *pci_dev,
* suboptimal, as the CVBS and SVideo inputs could use a different std
* and the buffer could end up being too small in that case.
*/
- vbi_buf_size = cx->vbi.raw_size * (cx->is_60hz ? 24 : 36) / 2;
+ vbi_buf_size = vbi_active_samples * (cx->is_60hz ? 24 : 36) / 2;
cx->stream_buf_size[CX18_ENC_STREAM_TYPE_VBI] = vbi_buf_size;
if (cx->stream_buffers[CX18_ENC_STREAM_TYPE_VBI] < 0)
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index d95c6ace2b9..a41d9c4178f 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -319,59 +319,121 @@ struct cx18_open_id {
/* forward declaration of struct defined in cx18-cards.h */
struct cx18_card;
+/*
+ * A note about "sliced" VBI data as implemented in this driver:
+ *
+ * Currently we collect the sliced VBI in the form of Ancillary Data
+ * packets, inserted by the AV core decoder/digitizer/slicer in the
+ * horizontal blanking region of the VBI lines, in "raw" mode as far as
+ * the Encoder is concerned. We don't ever tell the Encoder itself
+ * to provide sliced VBI. (AV Core: sliced mode - Encoder: raw mode)
+ *
+ * We then process the ancillary data ourselves to send the sliced data
+ * to the user application directly or build up MPEG-2 private stream 1
+ * packets to splice into (only!) MPEG-2 PS streams for the user app.
+ *
+ * (That's how ivtv essentially does it.)
+ *
+ * The Encoder should be able to extract certain sliced VBI data for
+ * us and provide it in a separate stream or splice it into any type of
+ * MPEG PS or TS stream, but this isn't implemented yet.
+ */
+
+/*
+ * Number of "raw" VBI samples per horizontal line we tell the Encoder to
+ * grab from the decoder/digitizer/slicer output for raw or sliced VBI.
+ * It depends on the pixel clock and the horiz rate:
+ *
+ * (1/Fh)*(2*Fp) = Samples/line
+ * = 4 bytes EAV + Anc data in hblank + 4 bytes SAV + active samples
+ *
+ * Sliced VBI data is sent as ancillary data during horizontal blanking
+ * Raw VBI is sent as active video samples during vertcal blanking
+ *
+ * We use a BT.656 pxiel clock of 13.5 MHz and a BT.656 active line
+ * length of 720 pixels @ 4:2:2 sampling. Thus...
+ *
+ * For systems that use a 15.734 kHz horizontal rate, such as
+ * NTSC-M, PAL-M, PAL-60, and other 60 Hz/525 line systems, we have:
+ *
+ * (1/15.734 kHz) * 2 * 13.5 MHz = 1716 samples/line =
+ * 4 bytes SAV + 268 bytes anc data + 4 bytes SAV + 1440 active samples
+ *
+ * For systems that use a 15.625 kHz horizontal rate, such as
+ * PAL-B/G/H, PAL-I, SECAM-L and other 50 Hz/625 line systems, we have:
+ *
+ * (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line =
+ * 4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples
+ */
+static const u32 vbi_active_samples = 1444; /* 4 byte SAV + 720 Y + 720 U/V */
+static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */
+static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */
#define CX18_VBI_FRAMES 32
-/* VBI data */
struct vbi_info {
- u32 enc_size;
- u32 frame;
- u8 cc_data_odd[256];
- u8 cc_data_even[256];
- int cc_pos;
- u8 cc_no_update;
- u8 vps[5];
- u8 vps_found;
- int wss;
- u8 wss_found;
- u8 wss_no_update;
- u32 raw_decoder_line_size;
- u8 raw_decoder_sav_odd_field;
- u8 raw_decoder_sav_even_field;
- u32 sliced_decoder_line_size;
- u8 sliced_decoder_sav_odd_field;
- u8 sliced_decoder_sav_even_field;
+ /* Current state of v4l2 VBI settings for this device */
struct v4l2_format in;
- /* convenience pointer to sliced struct in vbi_in union */
- struct v4l2_sliced_vbi_format *sliced_in;
- u32 service_set_in;
- int insert_mpeg;
+ struct v4l2_sliced_vbi_format *sliced_in; /* pointer to in.fmt.sliced */
+ u32 count; /* Count of VBI data lines: 60 Hz: 12 or 50 Hz: 18 */
+ u32 start[2]; /* First VBI data line per field: 10 & 273 or 6 & 318 */
- /* Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
- One for /dev/vbi0 and one for /dev/vbi8 */
- struct v4l2_sliced_vbi_data sliced_data[36];
+ u32 frame; /* Count of VBI buffers/frames received from Encoder */
- /* Buffer for VBI data inserted into MPEG stream.
- The first byte is a dummy byte that's never used.
- The next 16 bytes contain the MPEG header for the VBI data,
- the remainder is the actual VBI data.
- The max size accepted by the MPEG VBI reinsertion turns out
- to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
- where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
- a single line header byte and 2 * 18 is the number of VBI lines per frame.
+ /*
+ * Vars for creation and insertion of MPEG Private Stream 1 packets
+ * of sliced VBI data into an MPEG PS
+ */
- However, it seems that the data must be 1K aligned, so we have to
- pad the data until the 1 or 2 K boundary.
+ /* Boolean: create and insert Private Stream 1 packets into the PS */
+ int insert_mpeg;
+
+ /*
+ * Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
+ * Used in cx18-vbi.c only for collecting sliced data, and as a source
+ * during conversion of sliced VBI data into MPEG Priv Stream 1 packets.
+ * We don't need to save state here, but the array may have been a bit
+ * too big (2304 bytes) to alloc from the stack.
+ */
+ struct v4l2_sliced_vbi_data sliced_data[36];
- This pointer array will allocate 2049 bytes to store each VBI frame. */
+ /*
+ * A ring buffer of driver-generated MPEG-2 PS
+ * Program Pack/Private Stream 1 packets for sliced VBI data insertion
+ * into the MPEG PS stream.
+ *
+ * In each sliced_mpeg_data[] buffer is:
+ * 16 byte MPEG-2 PS Program Pack Header
+ * 16 byte MPEG-2 Private Stream 1 PES Header
+ * 4 byte magic number: "itv0" or "ITV0"
+ * 4 byte first field line mask, if "itv0"
+ * 4 byte second field line mask, if "itv0"
+ * 36 lines, if "ITV0"; or <36 lines, if "itv0"; of sliced VBI data
+ *
+ * Each line in the payload is
+ * 1 byte line header derived from the SDID (WSS, CC, VPS, etc.)
+ * 42 bytes of line data
+ *
+ * That's a maximum 1552 bytes of payload in the Private Stream 1 packet
+ * which is the payload size a PVR-350 (CX23415) MPEG decoder will
+ * accept for VBI data. So, including the headers, it's a maximum 1584
+ * bytes total.
+ */
+#define CX18_SLICED_MPEG_DATA_MAXSZ 1584
+ /* copy_vbi_buf() needs 8 temp bytes on the end for the worst case */
+#define CX18_SLICED_MPEG_DATA_BUFSZ (CX18_SLICED_MPEG_DATA_MAXSZ+8)
u8 *sliced_mpeg_data[CX18_VBI_FRAMES];
u32 sliced_mpeg_size[CX18_VBI_FRAMES];
- struct cx18_buffer sliced_mpeg_buf;
+
+ /* Count of Program Pack/Program Stream 1 packets inserted into PS */
u32 inserted_frame;
- u32 start[2], count;
- u32 raw_size;
- u32 sliced_size;
+ /*
+ * A dummy driver stream transfer buffer with a copy of the next
+ * sliced_mpeg_data[] buffer for output to userland apps.
+ * Only used in cx18-fileops.c, but its state needs to persist at times.
+ */
+ struct cx18_buffer sliced_mpeg_buf;
};
/* Per cx23418, per I2C bus private algo callback data */
diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c
index 23006f7d915..0b1dbc67e1a 100644
--- a/drivers/media/video/cx18/cx18-fileops.c
+++ b/drivers/media/video/cx18/cx18-fileops.c
@@ -176,6 +176,8 @@ static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block,
*err = 0;
while (1) {
if (s->type == CX18_ENC_STREAM_TYPE_MPG) {
+ /* Process pending program info updates and pending
+ VBI data */
if (time_after(jiffies, cx->dualwatch_jiffies + msecs_to_jiffies(1000))) {
cx->dualwatch_jiffies = jiffies;
@@ -260,6 +262,20 @@ static size_t cx18_copy_buf_to_user(struct cx18_stream *s,
len = ucount;
if (cx->vbi.insert_mpeg && s->type == CX18_ENC_STREAM_TYPE_MPG &&
!cx18_raw_vbi(cx) && buf != &cx->vbi.sliced_mpeg_buf) {
+ /*
+ * Try to find a good splice point in the PS, just before
+ * an MPEG-2 Program Pack start code, and provide only
+ * up to that point to the user, so it's easy to insert VBI data
+ * the next time around.
+ */
+ /* FIXME - This only works for an MPEG-2 PS, not a TS */
+ /*
+ * An MPEG-2 Program Stream (PS) is a series of
+ * MPEG-2 Program Packs terminated by an
+ * MPEG Program End Code after the last Program Pack.
+ * A Program Pack may hold a PS System Header packet and any
+ * number of Program Elementary Stream (PES) Packets
+ */
const char *start = buf->buf + buf->readpos;
const char *p = start + 1;
const u8 *q;
@@ -267,38 +283,54 @@ static size_t cx18_copy_buf_to_user(struct cx18_stream *s,
int stuffing, i;
while (start + len > p) {
+ /* Scan for a 0 to find a potential MPEG-2 start code */
q = memchr(p, 0, start + len - p);
if (q == NULL)
break;
p = q + 1;
+ /*
+ * Keep looking if not a
+ * MPEG-2 Pack header start code: 0x00 0x00 0x01 0xba
+ * or MPEG-2 video PES start code: 0x00 0x00 0x01 0xe0
+ */
if ((char *)q + 15 >= buf->buf + buf->bytesused ||
q[1] != 0 || q[2] != 1 || q[3] != ch)
continue;
+
+ /* If expecting the primary video PES */
if (!cx->search_pack_header) {
+ /* Continue if it couldn't be a PES packet */
if ((q[6] & 0xc0) != 0x80)
continue;
- if (((q[7] & 0xc0) == 0x80 &&
- (q[9] & 0xf0) == 0x20) ||
- ((q[7] & 0xc0) == 0xc0 &&
- (q[9] & 0xf0) == 0x30)) {
- ch = 0xba;
+ /* Check if a PTS or PTS & DTS follow */
+ if (((q[7] & 0xc0) == 0x80 && /* PTS only */
+ (q[9] & 0xf0) == 0x20) || /* PTS only */
+ ((q[7] & 0xc0) == 0xc0 && /* PTS & DTS */
+ (q[9] & 0xf0) == 0x30)) { /* DTS follows */
+ /* Assume we found the video PES hdr */
+ ch = 0xba; /* next want a Program Pack*/
cx->search_pack_header = 1;
- p = q + 9;
+ p = q + 9; /* Skip this video PES hdr */
}
continue;
}
+
+ /* We may have found a Program Pack start code */
+
+ /* Get the count of stuffing bytes & verify them */
stuffing = q[13] & 7;
/* all stuffing bytes must be 0xff */
for (i = 0; i < stuffing; i++)
if (q[14 + i] != 0xff)
break;
- if (i == stuffing &&
- (q[4] & 0xc4) == 0x44 &&
- (q[12] & 3) == 3 &&
- q[14 + stuffing] == 0 &&
+ if (i == stuffing && /* right number of stuffing bytes*/
+ (q[4] & 0xc4) == 0x44 && /* marker check */
+ (q[12] & 3) == 3 && /* marker check */
+ q[14 + stuffing] == 0 && /* PES Pack or Sys Hdr */
q[15 + stuffing] == 0 &&
q[16 + stuffing] == 1) {
- cx->search_pack_header = 0;
+ /* We declare we actually found a Program Pack*/
+ cx->search_pack_header = 0; /* expect vid PES */
len = (char *)q - start;
cx18_setup_sliced_vbi_buf(cx);
break;
diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c
index 20467fce525..1adb9722092 100644
--- a/drivers/media/video/cx18/cx18-ioctl.c
+++ b/drivers/media/video/cx18/cx18-ioctl.c
@@ -102,6 +102,19 @@ void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
}
}
+static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
+{
+ int f, l;
+ u16 set = 0;
+
+ for (f = 0; f < 2; f++) {
+ for (l = 0; l < 24; l++) {
+ fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
+ set |= fmt->service_lines[f][l];
+ }
+ }
+ return set != 0;
+}
u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
{
@@ -150,7 +163,7 @@ static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
vbifmt->sampling_rate = 27000000;
vbifmt->offset = 248;
- vbifmt->samples_per_line = cx->vbi.raw_decoder_line_size - 4;
+ vbifmt->samples_per_line = vbi_active_samples - 4;
vbifmt->sample_format = V4L2_PIX_FMT_GREY;
vbifmt->start[0] = cx->vbi.start[0];
vbifmt->start[1] = cx->vbi.start[1];
@@ -164,7 +177,17 @@ static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
- return -EINVAL;
+ struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
+ struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
+
+ vbifmt->reserved[0] = 0;
+ vbifmt->reserved[1] = 0;
+ vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
+ memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
+
+ cx18_av_cmd(cx, VIDIOC_G_FMT, fmt);
+ vbifmt->service_set = cx18_get_service_set(vbifmt);
+ return 0;
}
static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
@@ -194,7 +217,18 @@ static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
- return -EINVAL;
+ struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
+ struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
+
+ vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
+ vbifmt->reserved[0] = 0;
+ vbifmt->reserved[1] = 0;
+
+ if (vbifmt->service_set)
+ cx18_expand_service_set(vbifmt, cx->is_50hz);
+ check_service_set(vbifmt, cx->is_50hz);
+ vbifmt->service_set = cx18_get_service_set(vbifmt);
+ return 0;
}
static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
@@ -250,7 +284,28 @@ static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
- return -EINVAL;
+ struct cx18_open_id *id = fh;
+ struct cx18 *cx = id->cx;
+ int ret;
+ struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
+
+ ret = v4l2_prio_check(&cx->prio, &id->prio);
+ if (ret)
+ return ret;
+
+ ret = cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
+ if (ret)
+ return ret;
+
+ if (check_service_set(vbifmt, cx->is_50hz) == 0)
+ return -EINVAL;
+
+ if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
+ return -EBUSY;
+ cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
+ cx18_av_cmd(cx, VIDIOC_S_FMT, fmt);
+ memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
+ return 0;
}
static int cx18_g_chip_ident(struct file *file, void *fh,
@@ -548,7 +603,6 @@ int cx18_s_std(struct file *file, void *fh, v4l2_std_id *std)
cx->vbi.count = cx->is_50hz ? 18 : 12;
cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
- cx->vbi.sliced_decoder_line_size = cx->is_60hz ? 272 : 284;
CX18_DEBUG_INFO("Switching standard to %llx.\n",
(unsigned long long) cx->std);
@@ -599,6 +653,19 @@ static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_sliced_vbi_cap *cap)
{
+ struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
+ int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
+ int f, l;
+
+ if (cap->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
+ for (f = 0; f < 2; f++) {
+ for (l = 0; l < 24; l++) {
+ if (valid_service_line(f, l, cx->is_50hz))
+ cap->service_lines[f][l] = set;
+ }
+ }
+ return 0;
+ }
return -EINVAL;
}
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index abc3fe605f0..a89f7f840d9 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -349,10 +349,6 @@ static void cx18_vbi_setup(struct cx18_stream *s)
/* setup VBI registers */
cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in);
- /* determine number of lines and total number of VBI bytes.
- A raw line takes 1444 bytes: 4 byte SAV code + 2 * 720
- A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
- header, 42 data bytes + checksum (to be confirmed) */
if (raw) {
lines = cx->vbi.count * 2;
} else {
@@ -361,24 +357,53 @@ static void cx18_vbi_setup(struct cx18_stream *s)
lines += 2;
}
- cx->vbi.enc_size = lines *
- (raw ? cx->vbi.raw_size : cx->vbi.sliced_size);
-
data[0] = s->handle;
/* Lines per field */
data[1] = (lines / 2) | ((lines / 2) << 16);
/* bytes per line */
- data[2] = (raw ? cx->vbi.raw_decoder_line_size
- : cx->vbi.sliced_decoder_line_size);
+ data[2] = (raw ? vbi_active_samples
+ : (cx->is_60hz ? vbi_hblank_samples_60Hz
+ : vbi_hblank_samples_50Hz));
/* Every X number of frames a VBI interrupt arrives
(frames as in 25 or 30 fps) */
data[3] = 1;
- /* Setup VBI for the cx25840 digitizer */
+ /*
+ * Set the SAV/EAV RP codes to look for as start/stop points
+ * when in VIP-1.1 mode
+ */
if (raw) {
+ /*
+ * Start codes for beginning of "active" line in vertical blank
+ * 0x20 ( VerticalBlank )
+ * 0x60 ( EvenField VerticalBlank )
+ */
data[4] = 0x20602060;
+ /*
+ * End codes for end of "active" raw lines and regular lines
+ * 0x30 ( VerticalBlank HorizontalBlank)
+ * 0x70 ( EvenField VerticalBlank HorizontalBlank)
+ * 0x90 (Task HorizontalBlank)
+ * 0xd0 (Task EvenField HorizontalBlank)
+ */
data[5] = 0x307090d0;
} else {
+ /*
+ * End codes for active video, we want data in the hblank region
+ * 0xb0 (Task 0 VerticalBlank HorizontalBlank)
+ * 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
+ *
+ * Since the V bit is only allowed to toggle in the EAV RP code,
+ * just before the first active region line, these two
+ * are problematic and we have to ignore them:
+ * 0x90 (Task HorizontalBlank)
+ * 0xd0 (Task EvenField HorizontalBlank)
+ */
data[4] = 0xB0F0B0F0;
+ /*
+ * Start codes for beginning of active line in vertical blank
+ * 0xa0 (Task VerticalBlank )
+ * 0xe0 (Task EvenField VerticalBlank )
+ */
data[5] = 0xA0E0A0E0;
}
diff --git a/drivers/media/video/cx18/cx18-vbi.c b/drivers/media/video/cx18/cx18-vbi.c
index fb595bd548e..38d26c42e4c 100644
--- a/drivers/media/video/cx18/cx18-vbi.c
+++ b/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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 04:43:55 +0000