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1011 lines
32 KiB
1011 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* vivid-kthread-cap.h - video/vbi capture thread support functions. |
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* |
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* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/errno.h> |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/sched.h> |
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#include <linux/slab.h> |
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#include <linux/font.h> |
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#include <linux/mutex.h> |
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#include <linux/videodev2.h> |
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#include <linux/kthread.h> |
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#include <linux/freezer.h> |
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#include <linux/random.h> |
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#include <linux/v4l2-dv-timings.h> |
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#include <asm/div64.h> |
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#include <media/videobuf2-vmalloc.h> |
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#include <media/v4l2-dv-timings.h> |
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#include <media/v4l2-ioctl.h> |
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#include <media/v4l2-fh.h> |
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#include <media/v4l2-event.h> |
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#include <media/v4l2-rect.h> |
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|
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#include "vivid-core.h" |
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#include "vivid-vid-common.h" |
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#include "vivid-vid-cap.h" |
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#include "vivid-vid-out.h" |
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#include "vivid-radio-common.h" |
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#include "vivid-radio-rx.h" |
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#include "vivid-radio-tx.h" |
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#include "vivid-sdr-cap.h" |
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#include "vivid-vbi-cap.h" |
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#include "vivid-vbi-out.h" |
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#include "vivid-osd.h" |
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#include "vivid-ctrls.h" |
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#include "vivid-kthread-cap.h" |
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#include "vivid-meta-cap.h" |
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|
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static inline v4l2_std_id vivid_get_std_cap(const struct vivid_dev *dev) |
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{ |
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if (vivid_is_sdtv_cap(dev)) |
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return dev->std_cap[dev->input]; |
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return 0; |
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} |
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|
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static void copy_pix(struct vivid_dev *dev, int win_y, int win_x, |
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u16 *cap, const u16 *osd) |
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{ |
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u16 out; |
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int left = dev->overlay_out_left; |
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int top = dev->overlay_out_top; |
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int fb_x = win_x + left; |
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int fb_y = win_y + top; |
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int i; |
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|
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out = *cap; |
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*cap = *osd; |
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if (dev->bitmap_out) { |
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const u8 *p = dev->bitmap_out; |
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unsigned stride = (dev->compose_out.width + 7) / 8; |
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|
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win_x -= dev->compose_out.left; |
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win_y -= dev->compose_out.top; |
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if (!(p[stride * win_y + win_x / 8] & (1 << (win_x & 7)))) |
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return; |
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} |
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|
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for (i = 0; i < dev->clipcount_out; i++) { |
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struct v4l2_rect *r = &dev->clips_out[i].c; |
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|
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if (fb_y >= r->top && fb_y < r->top + r->height && |
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fb_x >= r->left && fb_x < r->left + r->width) |
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return; |
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} |
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if ((dev->fbuf_out_flags & V4L2_FBUF_FLAG_CHROMAKEY) && |
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*osd != dev->chromakey_out) |
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return; |
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if ((dev->fbuf_out_flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) && |
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out == dev->chromakey_out) |
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return; |
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if (dev->fmt_cap->alpha_mask) { |
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if ((dev->fbuf_out_flags & V4L2_FBUF_FLAG_GLOBAL_ALPHA) && |
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dev->global_alpha_out) |
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return; |
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if ((dev->fbuf_out_flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) && |
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*cap & dev->fmt_cap->alpha_mask) |
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return; |
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if ((dev->fbuf_out_flags & V4L2_FBUF_FLAG_LOCAL_INV_ALPHA) && |
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!(*cap & dev->fmt_cap->alpha_mask)) |
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return; |
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} |
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*cap = out; |
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} |
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|
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static void blend_line(struct vivid_dev *dev, unsigned y_offset, unsigned x_offset, |
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u8 *vcapbuf, const u8 *vosdbuf, |
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unsigned width, unsigned pixsize) |
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{ |
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unsigned x; |
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|
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for (x = 0; x < width; x++, vcapbuf += pixsize, vosdbuf += pixsize) { |
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copy_pix(dev, y_offset, x_offset + x, |
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(u16 *)vcapbuf, (const u16 *)vosdbuf); |
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} |
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} |
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|
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static void scale_line(const u8 *src, u8 *dst, unsigned srcw, unsigned dstw, unsigned twopixsize) |
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{ |
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/* Coarse scaling with Bresenham */ |
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unsigned int_part; |
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unsigned fract_part; |
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unsigned src_x = 0; |
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unsigned error = 0; |
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unsigned x; |
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|
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/* |
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* We always combine two pixels to prevent color bleed in the packed |
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* yuv case. |
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*/ |
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srcw /= 2; |
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dstw /= 2; |
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int_part = srcw / dstw; |
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fract_part = srcw % dstw; |
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for (x = 0; x < dstw; x++, dst += twopixsize) { |
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memcpy(dst, src + src_x * twopixsize, twopixsize); |
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src_x += int_part; |
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error += fract_part; |
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if (error >= dstw) { |
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error -= dstw; |
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src_x++; |
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} |
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} |
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} |
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|
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/* |
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* Precalculate the rectangles needed to perform video looping: |
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* |
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* The nominal pipeline is that the video output buffer is cropped by |
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* crop_out, scaled to compose_out, overlaid with the output overlay, |
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* cropped on the capture side by crop_cap and scaled again to the video |
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* capture buffer using compose_cap. |
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* |
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* To keep things efficient we calculate the intersection of compose_out |
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* and crop_cap (since that's the only part of the video that will |
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* actually end up in the capture buffer), determine which part of the |
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* video output buffer that is and which part of the video capture buffer |
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* so we can scale the video straight from the output buffer to the capture |
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* buffer without any intermediate steps. |
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* |
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* If we need to deal with an output overlay, then there is no choice and |
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* that intermediate step still has to be taken. For the output overlay |
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* support we calculate the intersection of the framebuffer and the overlay |
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* window (which may be partially or wholly outside of the framebuffer |
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* itself) and the intersection of that with loop_vid_copy (i.e. the part of |
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* the actual looped video that will be overlaid). The result is calculated |
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* both in framebuffer coordinates (loop_fb_copy) and compose_out coordinates |
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* (loop_vid_overlay). Finally calculate the part of the capture buffer that |
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* will receive that overlaid video. |
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*/ |
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static void vivid_precalc_copy_rects(struct vivid_dev *dev) |
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{ |
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/* Framebuffer rectangle */ |
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struct v4l2_rect r_fb = { |
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0, 0, dev->display_width, dev->display_height |
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}; |
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/* Overlay window rectangle in framebuffer coordinates */ |
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struct v4l2_rect r_overlay = { |
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dev->overlay_out_left, dev->overlay_out_top, |
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dev->compose_out.width, dev->compose_out.height |
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}; |
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|
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v4l2_rect_intersect(&dev->loop_vid_copy, &dev->crop_cap, &dev->compose_out); |
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|
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dev->loop_vid_out = dev->loop_vid_copy; |
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v4l2_rect_scale(&dev->loop_vid_out, &dev->compose_out, &dev->crop_out); |
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dev->loop_vid_out.left += dev->crop_out.left; |
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dev->loop_vid_out.top += dev->crop_out.top; |
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|
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dev->loop_vid_cap = dev->loop_vid_copy; |
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v4l2_rect_scale(&dev->loop_vid_cap, &dev->crop_cap, &dev->compose_cap); |
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|
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dprintk(dev, 1, |
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"loop_vid_copy: %dx%d@%dx%d loop_vid_out: %dx%d@%dx%d loop_vid_cap: %dx%d@%dx%d\n", |
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dev->loop_vid_copy.width, dev->loop_vid_copy.height, |
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dev->loop_vid_copy.left, dev->loop_vid_copy.top, |
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dev->loop_vid_out.width, dev->loop_vid_out.height, |
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dev->loop_vid_out.left, dev->loop_vid_out.top, |
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dev->loop_vid_cap.width, dev->loop_vid_cap.height, |
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dev->loop_vid_cap.left, dev->loop_vid_cap.top); |
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|
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v4l2_rect_intersect(&r_overlay, &r_fb, &r_overlay); |
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|
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/* shift r_overlay to the same origin as compose_out */ |
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r_overlay.left += dev->compose_out.left - dev->overlay_out_left; |
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r_overlay.top += dev->compose_out.top - dev->overlay_out_top; |
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|
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v4l2_rect_intersect(&dev->loop_vid_overlay, &r_overlay, &dev->loop_vid_copy); |
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dev->loop_fb_copy = dev->loop_vid_overlay; |
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|
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/* shift dev->loop_fb_copy back again to the fb origin */ |
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dev->loop_fb_copy.left -= dev->compose_out.left - dev->overlay_out_left; |
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dev->loop_fb_copy.top -= dev->compose_out.top - dev->overlay_out_top; |
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|
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dev->loop_vid_overlay_cap = dev->loop_vid_overlay; |
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v4l2_rect_scale(&dev->loop_vid_overlay_cap, &dev->crop_cap, &dev->compose_cap); |
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|
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dprintk(dev, 1, |
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"loop_fb_copy: %dx%d@%dx%d loop_vid_overlay: %dx%d@%dx%d loop_vid_overlay_cap: %dx%d@%dx%d\n", |
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dev->loop_fb_copy.width, dev->loop_fb_copy.height, |
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dev->loop_fb_copy.left, dev->loop_fb_copy.top, |
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dev->loop_vid_overlay.width, dev->loop_vid_overlay.height, |
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dev->loop_vid_overlay.left, dev->loop_vid_overlay.top, |
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dev->loop_vid_overlay_cap.width, dev->loop_vid_overlay_cap.height, |
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dev->loop_vid_overlay_cap.left, dev->loop_vid_overlay_cap.top); |
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} |
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|
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static void *plane_vaddr(struct tpg_data *tpg, struct vivid_buffer *buf, |
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unsigned p, unsigned bpl[TPG_MAX_PLANES], unsigned h) |
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{ |
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unsigned i; |
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void *vbuf; |
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|
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if (p == 0 || tpg_g_buffers(tpg) > 1) |
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return vb2_plane_vaddr(&buf->vb.vb2_buf, p); |
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vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); |
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for (i = 0; i < p; i++) |
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vbuf += bpl[i] * h / tpg->vdownsampling[i]; |
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return vbuf; |
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} |
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|
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static noinline_for_stack int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, |
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u8 *vcapbuf, struct vivid_buffer *vid_cap_buf) |
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{ |
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bool blank = dev->must_blank[vid_cap_buf->vb.vb2_buf.index]; |
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struct tpg_data *tpg = &dev->tpg; |
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struct vivid_buffer *vid_out_buf = NULL; |
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unsigned vdiv = dev->fmt_out->vdownsampling[p]; |
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unsigned twopixsize = tpg_g_twopixelsize(tpg, p); |
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unsigned img_width = tpg_hdiv(tpg, p, dev->compose_cap.width); |
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unsigned img_height = dev->compose_cap.height; |
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unsigned stride_cap = tpg->bytesperline[p]; |
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unsigned stride_out = dev->bytesperline_out[p]; |
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unsigned stride_osd = dev->display_byte_stride; |
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unsigned hmax = (img_height * tpg->perc_fill) / 100; |
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u8 *voutbuf; |
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u8 *vosdbuf = NULL; |
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unsigned y; |
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bool blend = dev->bitmap_out || dev->clipcount_out || dev->fbuf_out_flags; |
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/* Coarse scaling with Bresenham */ |
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unsigned vid_out_int_part; |
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unsigned vid_out_fract_part; |
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unsigned vid_out_y = 0; |
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unsigned vid_out_error = 0; |
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unsigned vid_overlay_int_part = 0; |
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unsigned vid_overlay_fract_part = 0; |
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unsigned vid_overlay_y = 0; |
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unsigned vid_overlay_error = 0; |
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unsigned vid_cap_left = tpg_hdiv(tpg, p, dev->loop_vid_cap.left); |
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unsigned vid_cap_right; |
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bool quick; |
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|
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vid_out_int_part = dev->loop_vid_out.height / dev->loop_vid_cap.height; |
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vid_out_fract_part = dev->loop_vid_out.height % dev->loop_vid_cap.height; |
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|
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if (!list_empty(&dev->vid_out_active)) |
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vid_out_buf = list_entry(dev->vid_out_active.next, |
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struct vivid_buffer, list); |
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if (vid_out_buf == NULL) |
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return -ENODATA; |
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|
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vid_cap_buf->vb.field = vid_out_buf->vb.field; |
|
|
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voutbuf = plane_vaddr(tpg, vid_out_buf, p, |
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dev->bytesperline_out, dev->fmt_out_rect.height); |
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if (p < dev->fmt_out->buffers) |
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voutbuf += vid_out_buf->vb.vb2_buf.planes[p].data_offset; |
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voutbuf += tpg_hdiv(tpg, p, dev->loop_vid_out.left) + |
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(dev->loop_vid_out.top / vdiv) * stride_out; |
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vcapbuf += tpg_hdiv(tpg, p, dev->compose_cap.left) + |
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(dev->compose_cap.top / vdiv) * stride_cap; |
|
|
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if (dev->loop_vid_copy.width == 0 || dev->loop_vid_copy.height == 0) { |
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/* |
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* If there is nothing to copy, then just fill the capture window |
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* with black. |
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*/ |
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for (y = 0; y < hmax / vdiv; y++, vcapbuf += stride_cap) |
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memcpy(vcapbuf, tpg->black_line[p], img_width); |
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return 0; |
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} |
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|
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if (dev->overlay_out_enabled && |
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dev->loop_vid_overlay.width && dev->loop_vid_overlay.height) { |
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vosdbuf = dev->video_vbase; |
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vosdbuf += (dev->loop_fb_copy.left * twopixsize) / 2 + |
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dev->loop_fb_copy.top * stride_osd; |
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vid_overlay_int_part = dev->loop_vid_overlay.height / |
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dev->loop_vid_overlay_cap.height; |
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vid_overlay_fract_part = dev->loop_vid_overlay.height % |
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dev->loop_vid_overlay_cap.height; |
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} |
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|
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vid_cap_right = tpg_hdiv(tpg, p, dev->loop_vid_cap.left + dev->loop_vid_cap.width); |
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/* quick is true if no video scaling is needed */ |
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quick = dev->loop_vid_out.width == dev->loop_vid_cap.width; |
|
|
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dev->cur_scaled_line = dev->loop_vid_out.height; |
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for (y = 0; y < hmax; y += vdiv, vcapbuf += stride_cap) { |
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/* osdline is true if this line requires overlay blending */ |
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bool osdline = vosdbuf && y >= dev->loop_vid_overlay_cap.top && |
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y < dev->loop_vid_overlay_cap.top + dev->loop_vid_overlay_cap.height; |
|
|
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/* |
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* If this line of the capture buffer doesn't get any video, then |
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* just fill with black. |
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*/ |
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if (y < dev->loop_vid_cap.top || |
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y >= dev->loop_vid_cap.top + dev->loop_vid_cap.height) { |
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memcpy(vcapbuf, tpg->black_line[p], img_width); |
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continue; |
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} |
|
|
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/* fill the left border with black */ |
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if (dev->loop_vid_cap.left) |
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memcpy(vcapbuf, tpg->black_line[p], vid_cap_left); |
|
|
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/* fill the right border with black */ |
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if (vid_cap_right < img_width) |
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memcpy(vcapbuf + vid_cap_right, tpg->black_line[p], |
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img_width - vid_cap_right); |
|
|
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if (quick && !osdline) { |
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memcpy(vcapbuf + vid_cap_left, |
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voutbuf + vid_out_y * stride_out, |
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tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); |
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goto update_vid_out_y; |
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} |
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if (dev->cur_scaled_line == vid_out_y) { |
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memcpy(vcapbuf + vid_cap_left, dev->scaled_line, |
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tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); |
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goto update_vid_out_y; |
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} |
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if (!osdline) { |
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scale_line(voutbuf + vid_out_y * stride_out, dev->scaled_line, |
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tpg_hdiv(tpg, p, dev->loop_vid_out.width), |
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tpg_hdiv(tpg, p, dev->loop_vid_cap.width), |
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tpg_g_twopixelsize(tpg, p)); |
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} else { |
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/* |
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* Offset in bytes within loop_vid_copy to the start of the |
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* loop_vid_overlay rectangle. |
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*/ |
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unsigned offset = |
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((dev->loop_vid_overlay.left - dev->loop_vid_copy.left) * |
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twopixsize) / 2; |
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u8 *osd = vosdbuf + vid_overlay_y * stride_osd; |
|
|
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scale_line(voutbuf + vid_out_y * stride_out, dev->blended_line, |
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dev->loop_vid_out.width, dev->loop_vid_copy.width, |
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tpg_g_twopixelsize(tpg, p)); |
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if (blend) |
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blend_line(dev, vid_overlay_y + dev->loop_vid_overlay.top, |
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dev->loop_vid_overlay.left, |
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dev->blended_line + offset, osd, |
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dev->loop_vid_overlay.width, twopixsize / 2); |
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else |
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memcpy(dev->blended_line + offset, |
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osd, (dev->loop_vid_overlay.width * twopixsize) / 2); |
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scale_line(dev->blended_line, dev->scaled_line, |
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dev->loop_vid_copy.width, dev->loop_vid_cap.width, |
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tpg_g_twopixelsize(tpg, p)); |
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} |
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dev->cur_scaled_line = vid_out_y; |
|
memcpy(vcapbuf + vid_cap_left, dev->scaled_line, |
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tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); |
|
|
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update_vid_out_y: |
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if (osdline) { |
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vid_overlay_y += vid_overlay_int_part; |
|
vid_overlay_error += vid_overlay_fract_part; |
|
if (vid_overlay_error >= dev->loop_vid_overlay_cap.height) { |
|
vid_overlay_error -= dev->loop_vid_overlay_cap.height; |
|
vid_overlay_y++; |
|
} |
|
} |
|
vid_out_y += vid_out_int_part; |
|
vid_out_error += vid_out_fract_part; |
|
if (vid_out_error >= dev->loop_vid_cap.height / vdiv) { |
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vid_out_error -= dev->loop_vid_cap.height / vdiv; |
|
vid_out_y++; |
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} |
|
} |
|
|
|
if (!blank) |
|
return 0; |
|
for (; y < img_height; y += vdiv, vcapbuf += stride_cap) |
|
memcpy(vcapbuf, tpg->contrast_line[p], img_width); |
|
return 0; |
|
} |
|
|
|
static void vivid_fillbuff(struct vivid_dev *dev, struct vivid_buffer *buf) |
|
{ |
|
struct tpg_data *tpg = &dev->tpg; |
|
unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1; |
|
unsigned line_height = 16 / factor; |
|
bool is_tv = vivid_is_sdtv_cap(dev); |
|
bool is_60hz = is_tv && (dev->std_cap[dev->input] & V4L2_STD_525_60); |
|
unsigned p; |
|
int line = 1; |
|
u8 *basep[TPG_MAX_PLANES][2]; |
|
unsigned ms; |
|
char str[100]; |
|
s32 gain; |
|
bool is_loop = false; |
|
|
|
if (dev->loop_video && dev->can_loop_video && |
|
((vivid_is_svid_cap(dev) && |
|
!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) || |
|
(vivid_is_hdmi_cap(dev) && |
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!VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])))) |
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is_loop = true; |
|
|
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buf->vb.sequence = dev->vid_cap_seq_count; |
|
v4l2_ctrl_s_ctrl(dev->ro_int32, buf->vb.sequence & 0xff); |
|
if (dev->field_cap == V4L2_FIELD_ALTERNATE) { |
|
/* |
|
* 60 Hz standards start with the bottom field, 50 Hz standards |
|
* with the top field. So if the 0-based seq_count is even, |
|
* then the field is TOP for 50 Hz and BOTTOM for 60 Hz |
|
* standards. |
|
*/ |
|
buf->vb.field = ((dev->vid_cap_seq_count & 1) ^ is_60hz) ? |
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V4L2_FIELD_BOTTOM : V4L2_FIELD_TOP; |
|
/* |
|
* The sequence counter counts frames, not fields. So divide |
|
* by two. |
|
*/ |
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buf->vb.sequence /= 2; |
|
} else { |
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buf->vb.field = dev->field_cap; |
|
} |
|
tpg_s_field(tpg, buf->vb.field, |
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dev->field_cap == V4L2_FIELD_ALTERNATE); |
|
tpg_s_perc_fill_blank(tpg, dev->must_blank[buf->vb.vb2_buf.index]); |
|
|
|
vivid_precalc_copy_rects(dev); |
|
|
|
for (p = 0; p < tpg_g_planes(tpg); p++) { |
|
void *vbuf = plane_vaddr(tpg, buf, p, |
|
tpg->bytesperline, tpg->buf_height); |
|
|
|
/* |
|
* The first plane of a multiplanar format has a non-zero |
|
* data_offset. This helps testing whether the application |
|
* correctly supports non-zero data offsets. |
|
*/ |
|
if (p < tpg_g_buffers(tpg) && dev->fmt_cap->data_offset[p]) { |
|
memset(vbuf, dev->fmt_cap->data_offset[p] & 0xff, |
|
dev->fmt_cap->data_offset[p]); |
|
vbuf += dev->fmt_cap->data_offset[p]; |
|
} |
|
tpg_calc_text_basep(tpg, basep, p, vbuf); |
|
if (!is_loop || vivid_copy_buffer(dev, p, vbuf, buf)) |
|
tpg_fill_plane_buffer(tpg, vivid_get_std_cap(dev), |
|
p, vbuf); |
|
} |
|
dev->must_blank[buf->vb.vb2_buf.index] = false; |
|
|
|
/* Updates stream time, only update at the start of a new frame. */ |
|
if (dev->field_cap != V4L2_FIELD_ALTERNATE || |
|
(dev->vid_cap_seq_count & 1) == 0) |
|
dev->ms_vid_cap = |
|
jiffies_to_msecs(jiffies - dev->jiffies_vid_cap); |
|
|
|
ms = dev->ms_vid_cap; |
|
if (dev->osd_mode <= 1) { |
|
snprintf(str, sizeof(str), " %02d:%02d:%02d:%03d %u%s", |
|
(ms / (60 * 60 * 1000)) % 24, |
|
(ms / (60 * 1000)) % 60, |
|
(ms / 1000) % 60, |
|
ms % 1000, |
|
buf->vb.sequence, |
|
(dev->field_cap == V4L2_FIELD_ALTERNATE) ? |
|
(buf->vb.field == V4L2_FIELD_TOP ? |
|
" top" : " bottom") : ""); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
} |
|
if (dev->osd_mode == 0) { |
|
snprintf(str, sizeof(str), " %dx%d, input %d ", |
|
dev->src_rect.width, dev->src_rect.height, dev->input); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
|
|
gain = v4l2_ctrl_g_ctrl(dev->gain); |
|
mutex_lock(dev->ctrl_hdl_user_vid.lock); |
|
snprintf(str, sizeof(str), |
|
" brightness %3d, contrast %3d, saturation %3d, hue %d ", |
|
dev->brightness->cur.val, |
|
dev->contrast->cur.val, |
|
dev->saturation->cur.val, |
|
dev->hue->cur.val); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
snprintf(str, sizeof(str), |
|
" autogain %d, gain %3d, alpha 0x%02x ", |
|
dev->autogain->cur.val, gain, dev->alpha->cur.val); |
|
mutex_unlock(dev->ctrl_hdl_user_vid.lock); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
mutex_lock(dev->ctrl_hdl_user_aud.lock); |
|
snprintf(str, sizeof(str), |
|
" volume %3d, mute %d ", |
|
dev->volume->cur.val, dev->mute->cur.val); |
|
mutex_unlock(dev->ctrl_hdl_user_aud.lock); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
mutex_lock(dev->ctrl_hdl_user_gen.lock); |
|
snprintf(str, sizeof(str), " int32 %d, ro_int32 %d, int64 %lld, bitmask %08x ", |
|
dev->int32->cur.val, |
|
dev->ro_int32->cur.val, |
|
*dev->int64->p_cur.p_s64, |
|
dev->bitmask->cur.val); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
snprintf(str, sizeof(str), " boolean %d, menu %s, string \"%s\" ", |
|
dev->boolean->cur.val, |
|
dev->menu->qmenu[dev->menu->cur.val], |
|
dev->string->p_cur.p_char); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
snprintf(str, sizeof(str), " integer_menu %lld, value %d ", |
|
dev->int_menu->qmenu_int[dev->int_menu->cur.val], |
|
dev->int_menu->cur.val); |
|
mutex_unlock(dev->ctrl_hdl_user_gen.lock); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
if (dev->button_pressed) { |
|
dev->button_pressed--; |
|
snprintf(str, sizeof(str), " button pressed!"); |
|
tpg_gen_text(tpg, basep, line++ * line_height, 16, str); |
|
} |
|
if (dev->osd[0]) { |
|
if (vivid_is_hdmi_cap(dev)) { |
|
snprintf(str, sizeof(str), |
|
" OSD \"%s\"", dev->osd); |
|
tpg_gen_text(tpg, basep, line++ * line_height, |
|
16, str); |
|
} |
|
if (dev->osd_jiffies && |
|
time_is_before_jiffies(dev->osd_jiffies + 5 * HZ)) { |
|
dev->osd[0] = 0; |
|
dev->osd_jiffies = 0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
/* |
|
* Return true if this pixel coordinate is a valid video pixel. |
|
*/ |
|
static bool valid_pix(struct vivid_dev *dev, int win_y, int win_x, int fb_y, int fb_x) |
|
{ |
|
int i; |
|
|
|
if (dev->bitmap_cap) { |
|
/* |
|
* Only if the corresponding bit in the bitmap is set can |
|
* the video pixel be shown. Coordinates are relative to |
|
* the overlay window set by VIDIOC_S_FMT. |
|
*/ |
|
const u8 *p = dev->bitmap_cap; |
|
unsigned stride = (dev->compose_cap.width + 7) / 8; |
|
|
|
if (!(p[stride * win_y + win_x / 8] & (1 << (win_x & 7)))) |
|
return false; |
|
} |
|
|
|
for (i = 0; i < dev->clipcount_cap; i++) { |
|
/* |
|
* Only if the framebuffer coordinate is not in any of the |
|
* clip rectangles will be video pixel be shown. |
|
*/ |
|
struct v4l2_rect *r = &dev->clips_cap[i].c; |
|
|
|
if (fb_y >= r->top && fb_y < r->top + r->height && |
|
fb_x >= r->left && fb_x < r->left + r->width) |
|
return false; |
|
} |
|
return true; |
|
} |
|
|
|
/* |
|
* Draw the image into the overlay buffer. |
|
* Note that the combination of overlay and multiplanar is not supported. |
|
*/ |
|
static void vivid_overlay(struct vivid_dev *dev, struct vivid_buffer *buf) |
|
{ |
|
struct tpg_data *tpg = &dev->tpg; |
|
unsigned pixsize = tpg_g_twopixelsize(tpg, 0) / 2; |
|
void *vbase = dev->fb_vbase_cap; |
|
void *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); |
|
unsigned img_width = dev->compose_cap.width; |
|
unsigned img_height = dev->compose_cap.height; |
|
unsigned stride = tpg->bytesperline[0]; |
|
/* if quick is true, then valid_pix() doesn't have to be called */ |
|
bool quick = dev->bitmap_cap == NULL && dev->clipcount_cap == 0; |
|
int x, y, w, out_x = 0; |
|
|
|
/* |
|
* Overlay support is only supported for formats that have a twopixelsize |
|
* that's >= 2. Warn and bail out if that's not the case. |
|
*/ |
|
if (WARN_ON(pixsize == 0)) |
|
return; |
|
if ((dev->overlay_cap_field == V4L2_FIELD_TOP || |
|
dev->overlay_cap_field == V4L2_FIELD_BOTTOM) && |
|
dev->overlay_cap_field != buf->vb.field) |
|
return; |
|
|
|
vbuf += dev->compose_cap.left * pixsize + dev->compose_cap.top * stride; |
|
x = dev->overlay_cap_left; |
|
w = img_width; |
|
if (x < 0) { |
|
out_x = -x; |
|
w = w - out_x; |
|
x = 0; |
|
} else { |
|
w = dev->fb_cap.fmt.width - x; |
|
if (w > img_width) |
|
w = img_width; |
|
} |
|
if (w <= 0) |
|
return; |
|
if (dev->overlay_cap_top >= 0) |
|
vbase += dev->overlay_cap_top * dev->fb_cap.fmt.bytesperline; |
|
for (y = dev->overlay_cap_top; |
|
y < dev->overlay_cap_top + (int)img_height; |
|
y++, vbuf += stride) { |
|
int px; |
|
|
|
if (y < 0 || y > dev->fb_cap.fmt.height) |
|
continue; |
|
if (quick) { |
|
memcpy(vbase + x * pixsize, |
|
vbuf + out_x * pixsize, w * pixsize); |
|
vbase += dev->fb_cap.fmt.bytesperline; |
|
continue; |
|
} |
|
for (px = 0; px < w; px++) { |
|
if (!valid_pix(dev, y - dev->overlay_cap_top, |
|
px + out_x, y, px + x)) |
|
continue; |
|
memcpy(vbase + (px + x) * pixsize, |
|
vbuf + (px + out_x) * pixsize, |
|
pixsize); |
|
} |
|
vbase += dev->fb_cap.fmt.bytesperline; |
|
} |
|
} |
|
|
|
static void vivid_cap_update_frame_period(struct vivid_dev *dev) |
|
{ |
|
u64 f_period; |
|
|
|
f_period = (u64)dev->timeperframe_vid_cap.numerator * 1000000000; |
|
if (WARN_ON(dev->timeperframe_vid_cap.denominator == 0)) |
|
dev->timeperframe_vid_cap.denominator = 1; |
|
do_div(f_period, dev->timeperframe_vid_cap.denominator); |
|
if (dev->field_cap == V4L2_FIELD_ALTERNATE) |
|
f_period >>= 1; |
|
/* |
|
* If "End of Frame", then offset the exposure time by 0.9 |
|
* of the frame period. |
|
*/ |
|
dev->cap_frame_eof_offset = f_period * 9; |
|
do_div(dev->cap_frame_eof_offset, 10); |
|
dev->cap_frame_period = f_period; |
|
} |
|
|
|
static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev, |
|
int dropped_bufs) |
|
{ |
|
struct vivid_buffer *vid_cap_buf = NULL; |
|
struct vivid_buffer *vbi_cap_buf = NULL; |
|
struct vivid_buffer *meta_cap_buf = NULL; |
|
u64 f_time = 0; |
|
|
|
dprintk(dev, 1, "Video Capture Thread Tick\n"); |
|
|
|
while (dropped_bufs-- > 1) |
|
tpg_update_mv_count(&dev->tpg, |
|
dev->field_cap == V4L2_FIELD_NONE || |
|
dev->field_cap == V4L2_FIELD_ALTERNATE); |
|
|
|
/* Drop a certain percentage of buffers. */ |
|
if (dev->perc_dropped_buffers && |
|
prandom_u32_max(100) < dev->perc_dropped_buffers) |
|
goto update_mv; |
|
|
|
spin_lock(&dev->slock); |
|
if (!list_empty(&dev->vid_cap_active)) { |
|
vid_cap_buf = list_entry(dev->vid_cap_active.next, struct vivid_buffer, list); |
|
list_del(&vid_cap_buf->list); |
|
} |
|
if (!list_empty(&dev->vbi_cap_active)) { |
|
if (dev->field_cap != V4L2_FIELD_ALTERNATE || |
|
(dev->vbi_cap_seq_count & 1)) { |
|
vbi_cap_buf = list_entry(dev->vbi_cap_active.next, |
|
struct vivid_buffer, list); |
|
list_del(&vbi_cap_buf->list); |
|
} |
|
} |
|
if (!list_empty(&dev->meta_cap_active)) { |
|
meta_cap_buf = list_entry(dev->meta_cap_active.next, |
|
struct vivid_buffer, list); |
|
list_del(&meta_cap_buf->list); |
|
} |
|
|
|
spin_unlock(&dev->slock); |
|
|
|
if (!vid_cap_buf && !vbi_cap_buf && !meta_cap_buf) |
|
goto update_mv; |
|
|
|
f_time = dev->cap_frame_period * dev->vid_cap_seq_count + |
|
dev->cap_stream_start + dev->time_wrap_offset; |
|
|
|
if (vid_cap_buf) { |
|
v4l2_ctrl_request_setup(vid_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vid_cap); |
|
/* Fill buffer */ |
|
vivid_fillbuff(dev, vid_cap_buf); |
|
dprintk(dev, 1, "filled buffer %d\n", |
|
vid_cap_buf->vb.vb2_buf.index); |
|
|
|
/* Handle overlay */ |
|
if (dev->overlay_cap_owner && dev->fb_cap.base && |
|
dev->fb_cap.fmt.pixelformat == dev->fmt_cap->fourcc) |
|
vivid_overlay(dev, vid_cap_buf); |
|
|
|
v4l2_ctrl_request_complete(vid_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vid_cap); |
|
vb2_buffer_done(&vid_cap_buf->vb.vb2_buf, dev->dqbuf_error ? |
|
VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); |
|
dprintk(dev, 2, "vid_cap buffer %d done\n", |
|
vid_cap_buf->vb.vb2_buf.index); |
|
|
|
vid_cap_buf->vb.vb2_buf.timestamp = f_time; |
|
if (!dev->tstamp_src_is_soe) |
|
vid_cap_buf->vb.vb2_buf.timestamp += dev->cap_frame_eof_offset; |
|
} |
|
|
|
if (vbi_cap_buf) { |
|
u64 vbi_period; |
|
|
|
v4l2_ctrl_request_setup(vbi_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vbi_cap); |
|
if (vbi_cap_buf->vb.vb2_buf.type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) |
|
vivid_sliced_vbi_cap_process(dev, vbi_cap_buf); |
|
else |
|
vivid_raw_vbi_cap_process(dev, vbi_cap_buf); |
|
v4l2_ctrl_request_complete(vbi_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vbi_cap); |
|
vb2_buffer_done(&vbi_cap_buf->vb.vb2_buf, dev->dqbuf_error ? |
|
VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); |
|
dprintk(dev, 2, "vbi_cap %d done\n", |
|
vbi_cap_buf->vb.vb2_buf.index); |
|
|
|
/* If capturing a VBI, offset by 0.05 */ |
|
vbi_period = dev->cap_frame_period * 5; |
|
do_div(vbi_period, 100); |
|
vbi_cap_buf->vb.vb2_buf.timestamp = f_time + dev->cap_frame_eof_offset + vbi_period; |
|
} |
|
|
|
if (meta_cap_buf) { |
|
v4l2_ctrl_request_setup(meta_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_meta_cap); |
|
vivid_meta_cap_fillbuff(dev, meta_cap_buf, f_time); |
|
v4l2_ctrl_request_complete(meta_cap_buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_meta_cap); |
|
vb2_buffer_done(&meta_cap_buf->vb.vb2_buf, dev->dqbuf_error ? |
|
VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); |
|
dprintk(dev, 2, "meta_cap %d done\n", |
|
meta_cap_buf->vb.vb2_buf.index); |
|
meta_cap_buf->vb.vb2_buf.timestamp = f_time + dev->cap_frame_eof_offset; |
|
} |
|
|
|
dev->dqbuf_error = false; |
|
|
|
update_mv: |
|
/* Update the test pattern movement counters */ |
|
tpg_update_mv_count(&dev->tpg, dev->field_cap == V4L2_FIELD_NONE || |
|
dev->field_cap == V4L2_FIELD_ALTERNATE); |
|
} |
|
|
|
static int vivid_thread_vid_cap(void *data) |
|
{ |
|
struct vivid_dev *dev = data; |
|
u64 numerators_since_start; |
|
u64 buffers_since_start; |
|
u64 next_jiffies_since_start; |
|
unsigned long jiffies_since_start; |
|
unsigned long cur_jiffies; |
|
unsigned wait_jiffies; |
|
unsigned numerator; |
|
unsigned denominator; |
|
int dropped_bufs; |
|
|
|
dprintk(dev, 1, "Video Capture Thread Start\n"); |
|
|
|
set_freezable(); |
|
|
|
/* Resets frame counters */ |
|
dev->cap_seq_offset = 0; |
|
dev->cap_seq_count = 0; |
|
dev->cap_seq_resync = false; |
|
dev->jiffies_vid_cap = jiffies; |
|
dev->cap_stream_start = ktime_get_ns(); |
|
vivid_cap_update_frame_period(dev); |
|
|
|
for (;;) { |
|
try_to_freeze(); |
|
if (kthread_should_stop()) |
|
break; |
|
|
|
if (!mutex_trylock(&dev->mutex)) { |
|
schedule(); |
|
continue; |
|
} |
|
|
|
cur_jiffies = jiffies; |
|
if (dev->cap_seq_resync) { |
|
dev->jiffies_vid_cap = cur_jiffies; |
|
dev->cap_seq_offset = dev->cap_seq_count + 1; |
|
dev->cap_seq_count = 0; |
|
dev->cap_stream_start += dev->cap_frame_period * |
|
dev->cap_seq_offset; |
|
vivid_cap_update_frame_period(dev); |
|
dev->cap_seq_resync = false; |
|
} |
|
numerator = dev->timeperframe_vid_cap.numerator; |
|
denominator = dev->timeperframe_vid_cap.denominator; |
|
|
|
if (dev->field_cap == V4L2_FIELD_ALTERNATE) |
|
denominator *= 2; |
|
|
|
/* Calculate the number of jiffies since we started streaming */ |
|
jiffies_since_start = cur_jiffies - dev->jiffies_vid_cap; |
|
/* Get the number of buffers streamed since the start */ |
|
buffers_since_start = (u64)jiffies_since_start * denominator + |
|
(HZ * numerator) / 2; |
|
do_div(buffers_since_start, HZ * numerator); |
|
|
|
/* |
|
* After more than 0xf0000000 (rounded down to a multiple of |
|
* 'jiffies-per-day' to ease jiffies_to_msecs calculation) |
|
* jiffies have passed since we started streaming reset the |
|
* counters and keep track of the sequence offset. |
|
*/ |
|
if (jiffies_since_start > JIFFIES_RESYNC) { |
|
dev->jiffies_vid_cap = cur_jiffies; |
|
dev->cap_seq_offset = buffers_since_start; |
|
buffers_since_start = 0; |
|
} |
|
dropped_bufs = buffers_since_start + dev->cap_seq_offset - dev->cap_seq_count; |
|
dev->cap_seq_count = buffers_since_start + dev->cap_seq_offset; |
|
dev->vid_cap_seq_count = dev->cap_seq_count - dev->vid_cap_seq_start; |
|
dev->vbi_cap_seq_count = dev->cap_seq_count - dev->vbi_cap_seq_start; |
|
dev->meta_cap_seq_count = dev->cap_seq_count - dev->meta_cap_seq_start; |
|
|
|
vivid_thread_vid_cap_tick(dev, dropped_bufs); |
|
|
|
/* |
|
* Calculate the number of 'numerators' streamed since we started, |
|
* including the current buffer. |
|
*/ |
|
numerators_since_start = ++buffers_since_start * numerator; |
|
|
|
/* And the number of jiffies since we started */ |
|
jiffies_since_start = jiffies - dev->jiffies_vid_cap; |
|
|
|
mutex_unlock(&dev->mutex); |
|
|
|
/* |
|
* Calculate when that next buffer is supposed to start |
|
* in jiffies since we started streaming. |
|
*/ |
|
next_jiffies_since_start = numerators_since_start * HZ + |
|
denominator / 2; |
|
do_div(next_jiffies_since_start, denominator); |
|
/* If it is in the past, then just schedule asap */ |
|
if (next_jiffies_since_start < jiffies_since_start) |
|
next_jiffies_since_start = jiffies_since_start; |
|
|
|
wait_jiffies = next_jiffies_since_start - jiffies_since_start; |
|
while (jiffies - cur_jiffies < wait_jiffies && |
|
!kthread_should_stop()) |
|
schedule(); |
|
} |
|
dprintk(dev, 1, "Video Capture Thread End\n"); |
|
return 0; |
|
} |
|
|
|
static void vivid_grab_controls(struct vivid_dev *dev, bool grab) |
|
{ |
|
v4l2_ctrl_grab(dev->ctrl_has_crop_cap, grab); |
|
v4l2_ctrl_grab(dev->ctrl_has_compose_cap, grab); |
|
v4l2_ctrl_grab(dev->ctrl_has_scaler_cap, grab); |
|
} |
|
|
|
int vivid_start_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming) |
|
{ |
|
dprintk(dev, 1, "%s\n", __func__); |
|
|
|
if (dev->kthread_vid_cap) { |
|
u32 seq_count = dev->cap_seq_count + dev->seq_wrap * 128; |
|
|
|
if (pstreaming == &dev->vid_cap_streaming) |
|
dev->vid_cap_seq_start = seq_count; |
|
else if (pstreaming == &dev->vbi_cap_streaming) |
|
dev->vbi_cap_seq_start = seq_count; |
|
else |
|
dev->meta_cap_seq_start = seq_count; |
|
*pstreaming = true; |
|
return 0; |
|
} |
|
|
|
/* Resets frame counters */ |
|
tpg_init_mv_count(&dev->tpg); |
|
|
|
dev->vid_cap_seq_start = dev->seq_wrap * 128; |
|
dev->vbi_cap_seq_start = dev->seq_wrap * 128; |
|
dev->meta_cap_seq_start = dev->seq_wrap * 128; |
|
|
|
dev->kthread_vid_cap = kthread_run(vivid_thread_vid_cap, dev, |
|
"%s-vid-cap", dev->v4l2_dev.name); |
|
|
|
if (IS_ERR(dev->kthread_vid_cap)) { |
|
int err = PTR_ERR(dev->kthread_vid_cap); |
|
|
|
dev->kthread_vid_cap = NULL; |
|
v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); |
|
return err; |
|
} |
|
*pstreaming = true; |
|
vivid_grab_controls(dev, true); |
|
|
|
dprintk(dev, 1, "returning from %s\n", __func__); |
|
return 0; |
|
} |
|
|
|
void vivid_stop_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming) |
|
{ |
|
dprintk(dev, 1, "%s\n", __func__); |
|
|
|
if (dev->kthread_vid_cap == NULL) |
|
return; |
|
|
|
*pstreaming = false; |
|
if (pstreaming == &dev->vid_cap_streaming) { |
|
/* Release all active buffers */ |
|
while (!list_empty(&dev->vid_cap_active)) { |
|
struct vivid_buffer *buf; |
|
|
|
buf = list_entry(dev->vid_cap_active.next, |
|
struct vivid_buffer, list); |
|
list_del(&buf->list); |
|
v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vid_cap); |
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
|
dprintk(dev, 2, "vid_cap buffer %d done\n", |
|
buf->vb.vb2_buf.index); |
|
} |
|
} |
|
|
|
if (pstreaming == &dev->vbi_cap_streaming) { |
|
while (!list_empty(&dev->vbi_cap_active)) { |
|
struct vivid_buffer *buf; |
|
|
|
buf = list_entry(dev->vbi_cap_active.next, |
|
struct vivid_buffer, list); |
|
list_del(&buf->list); |
|
v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_vbi_cap); |
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
|
dprintk(dev, 2, "vbi_cap buffer %d done\n", |
|
buf->vb.vb2_buf.index); |
|
} |
|
} |
|
|
|
if (pstreaming == &dev->meta_cap_streaming) { |
|
while (!list_empty(&dev->meta_cap_active)) { |
|
struct vivid_buffer *buf; |
|
|
|
buf = list_entry(dev->meta_cap_active.next, |
|
struct vivid_buffer, list); |
|
list_del(&buf->list); |
|
v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req, |
|
&dev->ctrl_hdl_meta_cap); |
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
|
dprintk(dev, 2, "meta_cap buffer %d done\n", |
|
buf->vb.vb2_buf.index); |
|
} |
|
} |
|
|
|
if (dev->vid_cap_streaming || dev->vbi_cap_streaming || |
|
dev->meta_cap_streaming) |
|
return; |
|
|
|
/* shutdown control thread */ |
|
vivid_grab_controls(dev, false); |
|
kthread_stop(dev->kthread_vid_cap); |
|
dev->kthread_vid_cap = NULL; |
|
}
|
|
|