diff options
author | Andy Walls <awalls@radix.net> | 2008-12-12 20:00:29 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:38:33 -0200 |
commit | af009cf635141858642864a26602e379e97bf7d6 (patch) | |
tree | ab533c73375ed26f2575efe5ba12a3b3f9b22d4c /drivers | |
parent | dd073434b5285121007860914a004320d644ee7e (diff) | |
download | linux-af009cf635141858642864a26602e379e97bf7d6.tar.gz linux-af009cf635141858642864a26602e379e97bf7d6.tar.bz2 linux-af009cf635141858642864a26602e379e97bf7d6.zip |
V4L/DVB (9806): cx18: Enable raw VBI capture
A combined authorship patch from Hans Verkuil and Andy Walls. Raw
VBI can now be captured but requires a video capture to be in progress as well.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/video/cx18/cx18-cards.c | 8 | ||||
-rw-r--r-- | drivers/media/video/cx18/cx18-cards.h | 5 | ||||
-rw-r--r-- | drivers/media/video/cx18/cx18-driver.c | 49 | ||||
-rw-r--r-- | drivers/media/video/cx18/cx18-fileops.c | 4 | ||||
-rw-r--r-- | drivers/media/video/cx18/cx18-streams.c | 8 | ||||
-rw-r--r-- | drivers/media/video/cx18/cx18-vbi.c | 3 |
6 files changed, 59 insertions, 18 deletions
diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c index fb9120d95f98..e274043657dd 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 = "VBI is not yet supported\n", + .comment = "Raw VBI supported; Sliced VBI is not yet 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 = "VBI is not yet supported\n", + .comment = "Raw VBI supported; Sliced VBI is not yet 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 = "VBI is not yet supported\n", + .comment = "Raw VBI supported; Sliced VBI is not yet 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 = "VBI is not yet supported\n", + .comment = "Raw VBI supported; Sliced VBI is not yet 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 a54aae9ed702..6fa7bcb42dde 100644 --- a/drivers/media/video/cx18/cx18-cards.h +++ b/drivers/media/video/cx18/cx18-cards.h @@ -48,8 +48,9 @@ /* 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_AUDIO | V4L2_CAP_READWRITE | \ + V4L2_CAP_VBI_CAPTURE) +/* | V4L2_CAP_SLICED_VBI_CAPTURE) not yet */ struct cx18_card_video_input { u8 video_type; /* video input type */ diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c index e845cd653bb8..863ebf06a829 100644 --- a/drivers/media/video/cx18/cx18-driver.c +++ b/drivers/media/video/cx18/cx18-driver.c @@ -596,13 +596,47 @@ static int __devinit cx18_init_struct1(struct cx18 *cx) /* VBI */ cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE; cx->vbi.sliced_in = &cx->vbi.in.fmt.sliced; - cx->vbi.raw_size = 1456; - cx->vbi.raw_decoder_line_size = 1456; - cx->vbi.raw_decoder_sav_odd_field = 0x20; - cx->vbi.raw_decoder_sav_even_field = 0x60; - cx->vbi.sliced_decoder_line_size = 272; - cx->vbi.sliced_decoder_sav_odd_field = 0xB0; - cx->vbi.sliced_decoder_sav_even_field = 0xF0; + + /* + * 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 NTSC: + * + * (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 PAL: + * + * (1/15,625 kHz) * 2 * 13.5 MHz = 1728 samples/line = + * 4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples + * + */ + + /* 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; } @@ -635,6 +669,7 @@ 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; } diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c index 1856d59e0cf6..425271a29517 100644 --- a/drivers/media/video/cx18/cx18-fileops.c +++ b/drivers/media/video/cx18/cx18-fileops.c @@ -185,7 +185,9 @@ static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block, !test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) { while ((buf = cx18_dequeue(s_vbi, &s_vbi->q_full))) { /* byteswap and process VBI data */ -/* cx18_process_vbi_data(cx, buf, s_vbi->dma_pts, s_vbi->type); */ + cx18_process_vbi_data(cx, buf, + s_vbi->dma_pts, + s_vbi->type); cx18_stream_put_buf_fw(s_vbi, buf); } } diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index c87cd5369a4f..985bad89f311 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -358,8 +358,7 @@ static void cx18_vbi_setup(struct cx18_stream *s) cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in); /* determine number of lines and total number of VBI bytes. - A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 - The '- 1' byte is probably an unused U or V byte. Or something... + 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) { @@ -377,14 +376,15 @@ static void cx18_vbi_setup(struct cx18_stream *s) /* Lines per field */ data[1] = (lines / 2) | ((lines / 2) << 16); /* bytes per line */ - data[2] = (raw ? cx->vbi.raw_size : cx->vbi.sliced_size); + data[2] = (raw ? cx->vbi.raw_decoder_line_size + : cx->vbi.sliced_decoder_line_size); /* 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 */ if (raw) { data[4] = 0x20602060; - data[5] = 0x30703070; + data[5] = 0x307090d0; } else { data[4] = 0xB0F0B0F0; data[5] = 0xA0E0A0E0; diff --git a/drivers/media/video/cx18/cx18-vbi.c b/drivers/media/video/cx18/cx18-vbi.c index 03f0e81307fa..fb595bd548e8 100644 --- a/drivers/media/video/cx18/cx18-vbi.c +++ b/drivers/media/video/cx18/cx18-vbi.c @@ -165,6 +165,9 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, cx18_buf_swap(buf); + /* Skip 12 bytes of header that gets stuffed in */ + size -= 12; + memcpy(p, &buf->buf[12], size); type = p[3]; size = buf->bytesused = compress_raw_buf(cx, p, size); |