From: Hans Verkuil Date: Mon, 25 Aug 2014 10:56:49 +0000 (-0300) Subject: [media] vivid: add VBI capture and output code X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=7bb70caa3bd59454285738b31f7b47e89fe62c1e;p=deliverable%2Flinux.git [media] vivid: add VBI capture and output code This adds support for VBI capture (raw and sliced) and VBI output (raw and sliced) to the vivid driver. In addition a VBI generator is added that generates simple VBI data in either sliced or raw format. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/vivid/vivid-vbi-cap.c b/drivers/media/platform/vivid/vivid-vbi-cap.c new file mode 100644 index 000000000000..e239cfdc030d --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-cap.c @@ -0,0 +1,356 @@ +/* + * vivid-vbi-cap.c - vbi capture support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include +#include + +#include "vivid-core.h" +#include "vivid-kthread-cap.h" +#include "vivid-vbi-cap.h" +#include "vivid-vbi-gen.h" + +static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr) +{ + struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen; + bool is_60hz = dev->std_cap & V4L2_STD_525_60; + + vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr); + + if (!is_60hz) { + if (dev->loop_video) { + if (dev->vbi_out_have_wss) { + vbi_gen->data[0].data[0] = dev->vbi_out_wss[0]; + vbi_gen->data[0].data[1] = dev->vbi_out_wss[1]; + } else { + vbi_gen->data[0].id = 0; + } + } else { + switch (tpg_g_video_aspect(&dev->tpg)) { + case TPG_VIDEO_ASPECT_14X9_CENTRE: + vbi_gen->data[0].data[0] = 0x01; + break; + case TPG_VIDEO_ASPECT_16X9_CENTRE: + vbi_gen->data[0].data[0] = 0x0b; + break; + case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC: + vbi_gen->data[0].data[0] = 0x07; + break; + case TPG_VIDEO_ASPECT_4X3: + default: + vbi_gen->data[0].data[0] = 0x08; + break; + } + } + } else if (dev->loop_video && is_60hz) { + if (dev->vbi_out_have_cc[0]) { + vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0]; + vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1]; + } else { + vbi_gen->data[0].id = 0; + } + if (dev->vbi_out_have_cc[1]) { + vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0]; + vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1]; + } else { + vbi_gen->data[1].id = 0; + } + } +} + +static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi) +{ + bool is_60hz = dev->std_cap & V4L2_STD_525_60; + + vbi->sampling_rate = 27000000; + vbi->offset = 24; + vbi->samples_per_line = 1440; + vbi->sample_format = V4L2_PIX_FMT_GREY; + vbi->start[0] = is_60hz ? 10 : 6; + vbi->start[1] = is_60hz ? 273 : 318; + vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18; + vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0; + vbi->reserved[0] = 0; + vbi->reserved[1] = 0; +} + +void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) +{ + struct v4l2_vbi_format vbi; + u8 *vbuf = vb2_plane_vaddr(&buf->vb, 0); + + vivid_g_fmt_vbi_cap(dev, &vbi); + buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count; + if (dev->field_cap == V4L2_FIELD_ALTERNATE) + buf->vb.v4l2_buf.sequence /= 2; + + vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence); + + memset(vbuf, 0x10, vb2_plane_size(&buf->vb, 0)); + + if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) + vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf); + + v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); + buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset; +} + + +void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) +{ + struct v4l2_sliced_vbi_data *vbuf = vb2_plane_vaddr(&buf->vb, 0); + + buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count; + if (dev->field_cap == V4L2_FIELD_ALTERNATE) + buf->vb.v4l2_buf.sequence /= 2; + + vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence); + + memset(vbuf, 0, vb2_plane_size(&buf->vb, 0)); + if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) { + vbuf[0] = dev->vbi_gen.data[0]; + vbuf[1] = dev->vbi_gen.data[1]; + } + + v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); + buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset; +} + +static int vbi_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, + unsigned *nbuffers, unsigned *nplanes, + unsigned sizes[], void *alloc_ctxs[]) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + bool is_60hz = dev->std_cap & V4L2_STD_525_60; + unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? + 36 * sizeof(struct v4l2_sliced_vbi_data) : + 1440 * 2 * (is_60hz ? 12 : 18); + + if (!vivid_is_sdtv_cap(dev)) + return -EINVAL; + + sizes[0] = size; + + if (vq->num_buffers + *nbuffers < 2) + *nbuffers = 2 - vq->num_buffers; + + *nplanes = 1; + return 0; +} + +static int vbi_cap_buf_prepare(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + bool is_60hz = dev->std_cap & V4L2_STD_525_60; + unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? + 36 * sizeof(struct v4l2_sliced_vbi_data) : + 1440 * 2 * (is_60hz ? 12 : 18); + + dprintk(dev, 1, "%s\n", __func__); + + if (dev->buf_prepare_error) { + /* + * Error injection: test what happens if buf_prepare() returns + * an error. + */ + dev->buf_prepare_error = false; + return -EINVAL; + } + if (vb2_plane_size(vb, 0) < size) { + dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", + __func__, vb2_plane_size(vb, 0), size); + return -EINVAL; + } + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void vbi_cap_buf_queue(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb); + + dprintk(dev, 1, "%s\n", __func__); + + spin_lock(&dev->slock); + list_add_tail(&buf->list, &dev->vbi_cap_active); + spin_unlock(&dev->slock); +} + +static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + int err; + + dprintk(dev, 1, "%s\n", __func__); + dev->vbi_cap_seq_count = 0; + if (dev->start_streaming_error) { + dev->start_streaming_error = false; + err = -EINVAL; + } else { + err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming); + } + if (err) { + struct vivid_buffer *buf, *tmp; + + list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); + } + } + return err; +} + +/* abort streaming and wait for last buffer */ +static void vbi_cap_stop_streaming(struct vb2_queue *vq) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + + dprintk(dev, 1, "%s\n", __func__); + vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming); +} + +const struct vb2_ops vivid_vbi_cap_qops = { + .queue_setup = vbi_cap_queue_setup, + .buf_prepare = vbi_cap_buf_prepare, + .buf_queue = vbi_cap_buf_queue, + .start_streaming = vbi_cap_start_streaming, + .stop_streaming = vbi_cap_stop_streaming, + .wait_prepare = vivid_unlock, + .wait_finish = vivid_lock, +}; + +int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_vbi_format *vbi = &f->fmt.vbi; + + if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap) + return -EINVAL; + + vivid_g_fmt_vbi_cap(dev, vbi); + return 0; +} + +int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vivid_dev *dev = video_drvdata(file); + int ret = vidioc_g_fmt_vbi_cap(file, priv, f); + + if (ret) + return ret; + if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) + return -EBUSY; + dev->stream_sliced_vbi_cap = false; + dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE; + return 0; +} + +void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set) +{ + vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; + vbi->service_set = service_set; + memset(vbi->service_lines, 0, sizeof(vbi->service_lines)); + memset(vbi->reserved, 0, sizeof(vbi->reserved)); + + if (vbi->service_set == 0) + return; + + if (vbi->service_set & V4L2_SLICED_CAPTION_525) { + vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525; + vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525; + } + if (vbi->service_set & V4L2_SLICED_WSS_625) + vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; +} + +int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + + if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) + return -EINVAL; + + vivid_fill_service_lines(vbi, dev->service_set_cap); + return 0; +} + +int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + bool is_60hz = dev->std_cap & V4L2_STD_525_60; + u32 service_set = vbi->service_set; + + if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) + return -EINVAL; + + service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : V4L2_SLICED_WSS_625; + vivid_fill_service_lines(vbi, service_set); + return 0; +} + +int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt); + + if (ret) + return ret; + if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) + return -EBUSY; + dev->service_set_cap = vbi->service_set; + dev->stream_sliced_vbi_cap = true; + dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; + return 0; +} + +int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + bool is_60hz; + + if (vdev->vfl_dir == VFL_DIR_RX) { + is_60hz = dev->std_cap & V4L2_STD_525_60; + if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap || + cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) + return -EINVAL; + } else { + is_60hz = dev->std_out & V4L2_STD_525_60; + if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out || + cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) + return -EINVAL; + } + + cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : V4L2_SLICED_WSS_625; + if (is_60hz) { + cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525; + cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525; + } else { + cap->service_lines[0][23] = V4L2_SLICED_WSS_625; + } + return 0; +} diff --git a/drivers/media/platform/vivid/vivid-vbi-cap.h b/drivers/media/platform/vivid/vivid-vbi-cap.h new file mode 100644 index 000000000000..2d8ea0bac743 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-cap.h @@ -0,0 +1,40 @@ +/* + * vivid-vbi-cap.h - vbi capture support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _VIVID_VBI_CAP_H_ +#define _VIVID_VBI_CAP_H_ + +void vivid_fill_time_of_day_packet(u8 *packet); +void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf); +void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf); +void vivid_sliced_vbi_out_process(struct vivid_dev *dev, struct vivid_buffer *buf); +int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f); +int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f); +int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt); +int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt); +int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt); +int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap); + +void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set); + +extern const struct vb2_ops vivid_vbi_cap_qops; + +#endif diff --git a/drivers/media/platform/vivid/vivid-vbi-gen.c b/drivers/media/platform/vivid/vivid-vbi-gen.c new file mode 100644 index 000000000000..22f4bcc6a6c0 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-gen.c @@ -0,0 +1,248 @@ +/* + * vivid-vbi-gen.c - vbi generator support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include +#include + +#include "vivid-vbi-gen.h" + +static void wss_insert(u8 *wss, u32 val, unsigned size) +{ + while (size--) + *wss++ = (val & (1 << size)) ? 0xc0 : 0x10; +} + +static void vivid_vbi_gen_wss_raw(const struct v4l2_sliced_vbi_data *data, + u8 *buf, unsigned sampling_rate) +{ + const unsigned rate = 5000000; /* WSS has a 5 MHz transmission rate */ + u8 wss[29 + 24 + 24 + 24 + 18 + 18] = { 0 }; + const unsigned zero = 0x07; + const unsigned one = 0x38; + unsigned bit = 0; + u16 wss_data; + int i; + + wss_insert(wss + bit, 0x1f1c71c7, 29); bit += 29; + wss_insert(wss + bit, 0x1e3c1f, 24); bit += 24; + + wss_data = (data->data[1] << 8) | data->data[0]; + for (i = 0; i <= 13; i++, bit += 6) + wss_insert(wss + bit, (wss_data & (1 << i)) ? one : zero, 6); + + for (i = 0, bit = 0; bit < sizeof(wss); bit++) { + unsigned n = ((bit + 1) * sampling_rate) / rate; + + while (i < n) + buf[i++] = wss[bit]; + } +} + +static void cc_insert(u8 *cc, u8 ch) +{ + unsigned tot = 0; + unsigned i; + + for (i = 0; i < 7; i++) { + cc[2 * i] = cc[2 * i + 1] = (ch & (1 << i)) ? 1 : 0; + tot += cc[2 * i]; + } + cc[14] = cc[15] = !(tot & 1); +} + +#define CC_PREAMBLE_BITS (14 + 4 + 2) + +static void vivid_vbi_gen_cc_raw(const struct v4l2_sliced_vbi_data *data, + u8 *buf, unsigned sampling_rate) +{ + const unsigned rate = 1000000; /* CC has a 1 MHz transmission rate */ + + u8 cc[CC_PREAMBLE_BITS + 2 * 16] = { + /* Clock run-in: 7 cycles */ + 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, + /* 2 cycles of 0 */ + 0, 0, 0, 0, + /* Start bit of 1 (each bit is two cycles) */ + 1, 1 + }; + unsigned bit, i; + + cc_insert(cc + CC_PREAMBLE_BITS, data->data[0]); + cc_insert(cc + CC_PREAMBLE_BITS + 16, data->data[1]); + + for (i = 0, bit = 0; bit < sizeof(cc); bit++) { + unsigned n = ((bit + 1) * sampling_rate) / rate; + + while (i < n) + buf[i++] = cc[bit] ? 0xc0 : 0x10; + } +} + +void vivid_vbi_gen_raw(const struct vivid_vbi_gen_data *vbi, + const struct v4l2_vbi_format *vbi_fmt, u8 *buf) +{ + unsigned idx; + + for (idx = 0; idx < 2; idx++) { + const struct v4l2_sliced_vbi_data *data = vbi->data + idx; + unsigned start_2nd_field; + unsigned line = data->line; + u8 *linebuf = buf; + + start_2nd_field = (data->id & V4L2_SLICED_VBI_525) ? 263 : 313; + if (data->field) + line += start_2nd_field; + line -= vbi_fmt->start[data->field]; + + if (vbi_fmt->flags & V4L2_VBI_INTERLACED) + linebuf += (line * 2 + data->field) * + vbi_fmt->samples_per_line; + else + linebuf += (line + data->field * vbi_fmt->count[0]) * + vbi_fmt->samples_per_line; + if (data->id == V4L2_SLICED_CAPTION_525) + vivid_vbi_gen_cc_raw(data, linebuf, vbi_fmt->sampling_rate); + else if (data->id == V4L2_SLICED_WSS_625) + vivid_vbi_gen_wss_raw(data, linebuf, vbi_fmt->sampling_rate); + } +} + +static const u8 vivid_cc_sequence1[30] = { + 0x14, 0x20, /* Resume Caption Loading */ + 'H', 'e', + 'l', 'l', + 'o', ' ', + 'w', 'o', + 'r', 'l', + 'd', '!', + 0x14, 0x2f, /* End of Caption */ +}; + +static const u8 vivid_cc_sequence2[30] = { + 0x14, 0x20, /* Resume Caption Loading */ + 'C', 'l', + 'o', 's', + 'e', 'd', + ' ', 'c', + 'a', 'p', + 't', 'i', + 'o', 'n', + 's', ' ', + 't', 'e', + 's', 't', + 0x14, 0x2f, /* End of Caption */ +}; + +static u8 calc_parity(u8 val) +{ + unsigned i; + unsigned tot = 0; + + for (i = 0; i < 7; i++) + tot += (val & (1 << i)) ? 1 : 0; + return val | ((tot & 1) ? 0 : 0x80); +} + +static void vivid_vbi_gen_set_time_of_day(u8 *packet) +{ + struct tm tm; + u8 checksum, i; + + time_to_tm(get_seconds(), 0, &tm); + packet[0] = calc_parity(0x07); + packet[1] = calc_parity(0x01); + packet[2] = calc_parity(0x40 | tm.tm_min); + packet[3] = calc_parity(0x40 | tm.tm_hour); + packet[4] = calc_parity(0x40 | tm.tm_mday); + if (tm.tm_mday == 1 && tm.tm_mon == 2 && + sys_tz.tz_minuteswest > tm.tm_min + tm.tm_hour * 60) + packet[4] = calc_parity(0x60 | tm.tm_mday); + packet[5] = calc_parity(0x40 | (1 + tm.tm_mon)); + packet[6] = calc_parity(0x40 | (1 + tm.tm_wday)); + packet[7] = calc_parity(0x40 | ((tm.tm_year - 90) & 0x3f)); + packet[8] = calc_parity(0x0f); + for (checksum = i = 0; i <= 8; i++) + checksum += packet[i] & 0x7f; + packet[9] = calc_parity(0x100 - checksum); + checksum = 0; + packet[10] = calc_parity(0x07); + packet[11] = calc_parity(0x04); + if (sys_tz.tz_minuteswest >= 0) + packet[12] = calc_parity(0x40 | ((sys_tz.tz_minuteswest / 60) & 0x1f)); + else + packet[12] = calc_parity(0x40 | ((24 + sys_tz.tz_minuteswest / 60) & 0x1f)); + packet[13] = calc_parity(0); + packet[14] = calc_parity(0x0f); + for (checksum = 0, i = 10; i <= 14; i++) + checksum += packet[i] & 0x7f; + packet[15] = calc_parity(0x100 - checksum); +} + +void vivid_vbi_gen_sliced(struct vivid_vbi_gen_data *vbi, + bool is_60hz, unsigned seqnr) +{ + struct v4l2_sliced_vbi_data *data0 = vbi->data; + struct v4l2_sliced_vbi_data *data1 = vbi->data + 1; + unsigned frame = seqnr % 60; + + memset(vbi->data, 0, sizeof(vbi->data)); + + if (!is_60hz) { + data0->id = V4L2_SLICED_WSS_625; + data0->line = 23; + /* 4x3 video aspect ratio */ + data0->data[0] = 0x08; + return; + } + + data0->id = V4L2_SLICED_CAPTION_525; + data0->line = 21; + data1->id = V4L2_SLICED_CAPTION_525; + data1->field = 1; + data1->line = 21; + + if (frame < 15) { + data0->data[0] = calc_parity(vivid_cc_sequence1[2 * frame]); + data0->data[1] = calc_parity(vivid_cc_sequence1[2 * frame + 1]); + } else if (frame >= 30 && frame < 45) { + frame -= 30; + data0->data[0] = calc_parity(vivid_cc_sequence2[2 * frame]); + data0->data[1] = calc_parity(vivid_cc_sequence2[2 * frame + 1]); + } else { + data0->data[0] = calc_parity(0); + data0->data[1] = calc_parity(0); + } + + frame = seqnr % (30 * 60); + switch (frame) { + case 0: + vivid_vbi_gen_set_time_of_day(vbi->time_of_day_packet); + /* fall through */ + case 1 ... 7: + data1->data[0] = vbi->time_of_day_packet[frame * 2]; + data1->data[1] = vbi->time_of_day_packet[frame * 2 + 1]; + break; + default: + data1->data[0] = calc_parity(0); + data1->data[1] = calc_parity(0); + break; + } +} diff --git a/drivers/media/platform/vivid/vivid-vbi-gen.h b/drivers/media/platform/vivid/vivid-vbi-gen.h new file mode 100644 index 000000000000..401dd47c0f1d --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-gen.h @@ -0,0 +1,33 @@ +/* + * vivid-vbi-gen.h - vbi generator support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _VIVID_VBI_GEN_H_ +#define _VIVID_VBI_GEN_H_ + +struct vivid_vbi_gen_data { + struct v4l2_sliced_vbi_data data[2]; + u8 time_of_day_packet[16]; +}; + +void vivid_vbi_gen_sliced(struct vivid_vbi_gen_data *vbi, + bool is_60hz, unsigned seqnr); +void vivid_vbi_gen_raw(const struct vivid_vbi_gen_data *vbi, + const struct v4l2_vbi_format *vbi_fmt, u8 *buf); + +#endif diff --git a/drivers/media/platform/vivid/vivid-vbi-out.c b/drivers/media/platform/vivid/vivid-vbi-out.c new file mode 100644 index 000000000000..039316d835b4 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-out.c @@ -0,0 +1,247 @@ +/* + * vivid-vbi-out.c - vbi output support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include +#include + +#include "vivid-core.h" +#include "vivid-kthread-out.h" +#include "vivid-vbi-out.h" +#include "vivid-vbi-cap.h" + +static int vbi_out_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, + unsigned *nbuffers, unsigned *nplanes, + unsigned sizes[], void *alloc_ctxs[]) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + bool is_60hz = dev->std_out & V4L2_STD_525_60; + unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ? + 36 * sizeof(struct v4l2_sliced_vbi_data) : + 1440 * 2 * (is_60hz ? 12 : 18); + + if (!vivid_is_svid_out(dev)) + return -EINVAL; + + sizes[0] = size; + + if (vq->num_buffers + *nbuffers < 2) + *nbuffers = 2 - vq->num_buffers; + + *nplanes = 1; + return 0; +} + +static int vbi_out_buf_prepare(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + bool is_60hz = dev->std_out & V4L2_STD_525_60; + unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ? + 36 * sizeof(struct v4l2_sliced_vbi_data) : + 1440 * 2 * (is_60hz ? 12 : 18); + + dprintk(dev, 1, "%s\n", __func__); + + if (dev->buf_prepare_error) { + /* + * Error injection: test what happens if buf_prepare() returns + * an error. + */ + dev->buf_prepare_error = false; + return -EINVAL; + } + if (vb2_plane_size(vb, 0) < size) { + dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", + __func__, vb2_plane_size(vb, 0), size); + return -EINVAL; + } + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void vbi_out_buf_queue(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb); + + dprintk(dev, 1, "%s\n", __func__); + + spin_lock(&dev->slock); + list_add_tail(&buf->list, &dev->vbi_out_active); + spin_unlock(&dev->slock); +} + +static int vbi_out_start_streaming(struct vb2_queue *vq, unsigned count) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + int err; + + dprintk(dev, 1, "%s\n", __func__); + dev->vbi_out_seq_count = 0; + if (dev->start_streaming_error) { + dev->start_streaming_error = false; + err = -EINVAL; + } else { + err = vivid_start_generating_vid_out(dev, &dev->vbi_out_streaming); + } + if (err) { + struct vivid_buffer *buf, *tmp; + + list_for_each_entry_safe(buf, tmp, &dev->vbi_out_active, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); + } + } + return err; +} + +/* abort streaming and wait for last buffer */ +static void vbi_out_stop_streaming(struct vb2_queue *vq) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + + dprintk(dev, 1, "%s\n", __func__); + vivid_stop_generating_vid_out(dev, &dev->vbi_out_streaming); + dev->vbi_out_have_wss = false; + dev->vbi_out_have_cc[0] = false; + dev->vbi_out_have_cc[1] = false; +} + +const struct vb2_ops vivid_vbi_out_qops = { + .queue_setup = vbi_out_queue_setup, + .buf_prepare = vbi_out_buf_prepare, + .buf_queue = vbi_out_buf_queue, + .start_streaming = vbi_out_start_streaming, + .stop_streaming = vbi_out_stop_streaming, + .wait_prepare = vivid_unlock, + .wait_finish = vivid_lock, +}; + +int vidioc_g_fmt_vbi_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_vbi_format *vbi = &f->fmt.vbi; + bool is_60hz = dev->std_out & V4L2_STD_525_60; + + if (!vivid_is_svid_out(dev) || !dev->has_raw_vbi_out) + return -EINVAL; + + vbi->sampling_rate = 25000000; + vbi->offset = 24; + vbi->samples_per_line = 1440; + vbi->sample_format = V4L2_PIX_FMT_GREY; + vbi->start[0] = is_60hz ? 10 : 6; + vbi->start[1] = is_60hz ? 273 : 318; + vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18; + vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0; + vbi->reserved[0] = 0; + vbi->reserved[1] = 0; + return 0; +} + +int vidioc_s_fmt_vbi_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vivid_dev *dev = video_drvdata(file); + int ret = vidioc_g_fmt_vbi_out(file, priv, f); + + if (ret) + return ret; + if (vb2_is_busy(&dev->vb_vbi_out_q)) + return -EBUSY; + dev->stream_sliced_vbi_out = false; + dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_VBI_OUTPUT; + return 0; +} + +int vidioc_g_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + + if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out) + return -EINVAL; + + vivid_fill_service_lines(vbi, dev->service_set_out); + return 0; +} + +int vidioc_try_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + bool is_60hz = dev->std_out & V4L2_STD_525_60; + u32 service_set = vbi->service_set; + + if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out) + return -EINVAL; + + service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : V4L2_SLICED_WSS_625; + vivid_fill_service_lines(vbi, service_set); + return 0; +} + +int vidioc_s_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct vivid_dev *dev = video_drvdata(file); + struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; + int ret = vidioc_try_fmt_sliced_vbi_out(file, fh, fmt); + + if (ret) + return ret; + if (vb2_is_busy(&dev->vb_vbi_out_q)) + return -EBUSY; + dev->service_set_out = vbi->service_set; + dev->stream_sliced_vbi_out = true; + dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_OUTPUT; + return 0; +} + +void vivid_sliced_vbi_out_process(struct vivid_dev *dev, struct vivid_buffer *buf) +{ + struct v4l2_sliced_vbi_data *vbi = vb2_plane_vaddr(&buf->vb, 0); + unsigned elems = vb2_get_plane_payload(&buf->vb, 0) / sizeof(*vbi); + + dev->vbi_out_have_cc[0] = false; + dev->vbi_out_have_cc[1] = false; + dev->vbi_out_have_wss = false; + while (elems--) { + switch (vbi->id) { + case V4L2_SLICED_CAPTION_525: + if ((dev->std_out & V4L2_STD_525_60) && vbi->line == 21) { + dev->vbi_out_have_cc[!!vbi->field] = true; + dev->vbi_out_cc[!!vbi->field][0] = vbi->data[0]; + dev->vbi_out_cc[!!vbi->field][1] = vbi->data[1]; + } + break; + case V4L2_SLICED_WSS_625: + if ((dev->std_out & V4L2_STD_625_50) && + vbi->field == 0 && vbi->line == 23) { + dev->vbi_out_have_wss = true; + dev->vbi_out_wss[0] = vbi->data[0]; + dev->vbi_out_wss[1] = vbi->data[1]; + } + break; + } + vbi++; + } +} diff --git a/drivers/media/platform/vivid/vivid-vbi-out.h b/drivers/media/platform/vivid/vivid-vbi-out.h new file mode 100644 index 000000000000..6555ba9d2860 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-out.h @@ -0,0 +1,34 @@ +/* + * vivid-vbi-out.h - vbi output support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _VIVID_VBI_OUT_H_ +#define _VIVID_VBI_OUT_H_ + +void vivid_sliced_vbi_out_process(struct vivid_dev *dev, struct vivid_buffer *buf); +int vidioc_g_fmt_vbi_out(struct file *file, void *priv, + struct v4l2_format *f); +int vidioc_s_fmt_vbi_out(struct file *file, void *priv, + struct v4l2_format *f); +int vidioc_g_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt); +int vidioc_try_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt); +int vidioc_s_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt); + +extern const struct vb2_ops vivid_vbi_out_qops; + +#endif