From: Hans Verkuil Date: Mon, 9 Mar 2015 15:06:27 +0000 (-0300) Subject: [media] vivid: add downsampling support X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1f9f23f62fb46d6cef93febe57bf41fb21fd01fa;p=linux-beck.git [media] vivid: add downsampling support Add support in vivid for downsampling. Most of the changes are in vivid_copy_buffer which needs to know about the right line widths. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/vivid/vivid-kthread-cap.c b/drivers/media/platform/vivid/vivid-kthread-cap.c index 22e17847e67f..1727f5453f0b 100644 --- a/drivers/media/platform/vivid/vivid-kthread-cap.c +++ b/drivers/media/platform/vivid/vivid-kthread-cap.c @@ -249,8 +249,9 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, bool blank = dev->must_blank[vid_cap_buf->vb.v4l2_buf.index]; struct tpg_data *tpg = &dev->tpg; struct vivid_buffer *vid_out_buf = NULL; - unsigned pixsize = tpg_g_twopixelsize(tpg, p) / 2; - unsigned img_width = dev->compose_cap.width; + unsigned vdiv = dev->fmt_out->vdownsampling[p]; + unsigned twopixsize = tpg_g_twopixelsize(tpg, p); + unsigned img_width = tpg_hdiv(tpg, p, dev->compose_cap.width); unsigned img_height = dev->compose_cap.height; unsigned stride_cap = tpg->bytesperline[p]; unsigned stride_out = dev->bytesperline_out[p]; @@ -269,6 +270,7 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, unsigned vid_overlay_fract_part = 0; unsigned vid_overlay_y = 0; unsigned vid_overlay_error = 0; + unsigned vid_cap_left = tpg_hdiv(tpg, p, dev->loop_vid_cap.left); unsigned vid_cap_right; bool quick; @@ -287,23 +289,25 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, dev->bytesperline_out, dev->fmt_out_rect.height); if (p < dev->fmt_out->buffers) voutbuf += vid_out_buf->vb.v4l2_planes[p].data_offset; - voutbuf += dev->loop_vid_out.left * pixsize + dev->loop_vid_out.top * stride_out; - vcapbuf += dev->compose_cap.left * pixsize + dev->compose_cap.top * stride_cap; + voutbuf += tpg_hdiv(tpg, p, dev->loop_vid_out.left) + + (dev->loop_vid_out.top / vdiv) * stride_out; + vcapbuf += tpg_hdiv(tpg, p, dev->compose_cap.left) + + (dev->compose_cap.top / vdiv) * stride_cap; if (dev->loop_vid_copy.width == 0 || dev->loop_vid_copy.height == 0) { /* * If there is nothing to copy, then just fill the capture window * with black. */ - for (y = 0; y < hmax; y++, vcapbuf += stride_cap) - memcpy(vcapbuf, tpg->black_line[p], img_width * pixsize); + for (y = 0; y < hmax / vdiv; y++, vcapbuf += stride_cap) + memcpy(vcapbuf, tpg->black_line[p], img_width); return 0; } if (dev->overlay_out_enabled && dev->loop_vid_overlay.width && dev->loop_vid_overlay.height) { vosdbuf = dev->video_vbase; - vosdbuf += dev->loop_fb_copy.left * pixsize + + vosdbuf += (dev->loop_fb_copy.left * twopixsize) / 2 + dev->loop_fb_copy.top * stride_osd; vid_overlay_int_part = dev->loop_vid_overlay.height / dev->loop_vid_overlay_cap.height; @@ -311,12 +315,12 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, dev->loop_vid_overlay_cap.height; } - vid_cap_right = dev->loop_vid_cap.left + dev->loop_vid_cap.width; + vid_cap_right = tpg_hdiv(tpg, p, dev->loop_vid_cap.left + dev->loop_vid_cap.width); /* quick is true if no video scaling is needed */ quick = dev->loop_vid_out.width == dev->loop_vid_cap.width; dev->cur_scaled_line = dev->loop_vid_out.height; - for (y = 0; y < hmax; y++, vcapbuf += stride_cap) { + for (y = 0; y < hmax; y += vdiv, vcapbuf += stride_cap) { /* osdline is true if this line requires overlay blending */ bool osdline = vosdbuf && y >= dev->loop_vid_overlay_cap.top && y < dev->loop_vid_overlay_cap.top + dev->loop_vid_overlay_cap.height; @@ -327,34 +331,34 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, */ if (y < dev->loop_vid_cap.top || y >= dev->loop_vid_cap.top + dev->loop_vid_cap.height) { - memcpy(vcapbuf, tpg->black_line[p], img_width * pixsize); + memcpy(vcapbuf, tpg->black_line[p], img_width); continue; } /* fill the left border with black */ if (dev->loop_vid_cap.left) - memcpy(vcapbuf, tpg->black_line[p], dev->loop_vid_cap.left * pixsize); + memcpy(vcapbuf, tpg->black_line[p], vid_cap_left); /* fill the right border with black */ if (vid_cap_right < img_width) - memcpy(vcapbuf + vid_cap_right * pixsize, - tpg->black_line[p], (img_width - vid_cap_right) * pixsize); + memcpy(vcapbuf + vid_cap_right, tpg->black_line[p], + img_width - vid_cap_right); if (quick && !osdline) { - memcpy(vcapbuf + dev->loop_vid_cap.left * pixsize, + memcpy(vcapbuf + vid_cap_left, voutbuf + vid_out_y * stride_out, - dev->loop_vid_cap.width * pixsize); + tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); goto update_vid_out_y; } if (dev->cur_scaled_line == vid_out_y) { - memcpy(vcapbuf + dev->loop_vid_cap.left * pixsize, - dev->scaled_line, - dev->loop_vid_cap.width * pixsize); + memcpy(vcapbuf + vid_cap_left, dev->scaled_line, + tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); goto update_vid_out_y; } if (!osdline) { scale_line(voutbuf + vid_out_y * stride_out, dev->scaled_line, - dev->loop_vid_out.width, dev->loop_vid_cap.width, + tpg_hdiv(tpg, p, dev->loop_vid_out.width), + tpg_hdiv(tpg, p, dev->loop_vid_cap.width), tpg_g_twopixelsize(tpg, p)); } else { /* @@ -362,7 +366,8 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, * loop_vid_overlay rectangle. */ unsigned offset = - (dev->loop_vid_overlay.left - dev->loop_vid_copy.left) * pixsize; + ((dev->loop_vid_overlay.left - dev->loop_vid_copy.left) * + twopixsize) / 2; u8 *osd = vosdbuf + vid_overlay_y * stride_osd; scale_line(voutbuf + vid_out_y * stride_out, dev->blended_line, @@ -372,18 +377,17 @@ static int vivid_copy_buffer(struct vivid_dev *dev, unsigned p, u8 *vcapbuf, blend_line(dev, vid_overlay_y + dev->loop_vid_overlay.top, dev->loop_vid_overlay.left, dev->blended_line + offset, osd, - dev->loop_vid_overlay.width, pixsize); + dev->loop_vid_overlay.width, twopixsize / 2); else memcpy(dev->blended_line + offset, - osd, dev->loop_vid_overlay.width * pixsize); + osd, (dev->loop_vid_overlay.width * twopixsize) / 2); scale_line(dev->blended_line, dev->scaled_line, dev->loop_vid_copy.width, dev->loop_vid_cap.width, tpg_g_twopixelsize(tpg, p)); } dev->cur_scaled_line = vid_out_y; - memcpy(vcapbuf + dev->loop_vid_cap.left * pixsize, - dev->scaled_line, - dev->loop_vid_cap.width * pixsize); + memcpy(vcapbuf + vid_cap_left, dev->scaled_line, + tpg_hdiv(tpg, p, dev->loop_vid_cap.width)); update_vid_out_y: if (osdline) { @@ -396,16 +400,16 @@ update_vid_out_y: } vid_out_y += vid_out_int_part; vid_out_error += vid_out_fract_part; - if (vid_out_error >= dev->loop_vid_cap.height) { - vid_out_error -= dev->loop_vid_cap.height; + if (vid_out_error >= dev->loop_vid_cap.height / vdiv) { + vid_out_error -= dev->loop_vid_cap.height / vdiv; vid_out_y++; } } if (!blank) return 0; - for (; y < img_height; y++, vcapbuf += stride_cap) - memcpy(vcapbuf, tpg->contrast_line[p], img_width * pixsize); + for (; y < img_height; y += vdiv, vcapbuf += stride_cap) + memcpy(vcapbuf, tpg->contrast_line[p], img_width); return 0; } @@ -604,6 +608,12 @@ static void vivid_overlay(struct vivid_dev *dev, struct vivid_buffer *buf) 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.v4l2_buf.field) diff --git a/drivers/media/platform/vivid/vivid-vid-out.c b/drivers/media/platform/vivid/vivid-vid-out.c index eeafb6c93c64..6c6deef3521c 100644 --- a/drivers/media/platform/vivid/vivid-vid-out.c +++ b/drivers/media/platform/vivid/vivid-vid-out.c @@ -43,7 +43,7 @@ static int vid_out_queue_setup(struct vb2_queue *vq, const struct v4l2_format *f unsigned p; for (p = vfmt->buffers; p < vfmt->planes; p++) - size += dev->bytesperline_out[p] * h; + size += dev->bytesperline_out[p] * h / vfmt->vdownsampling[p]; if (dev->field_out == V4L2_FIELD_ALTERNATE) { /* @@ -331,7 +331,8 @@ int vivid_g_fmt_vid_out(struct file *file, void *priv, for (p = fmt->buffers; p < fmt->planes; p++) { unsigned stride = dev->bytesperline_out[p]; - mp->plane_fmt[0].sizeimage += stride * mp->height; + mp->plane_fmt[0].sizeimage += + (stride * mp->height) / fmt->vdownsampling[p]; } return 0; } @@ -405,7 +406,7 @@ int vivid_try_fmt_vid_out(struct file *file, void *priv, } for (p = fmt->buffers; p < fmt->planes; p++) pfmt[0].sizeimage += (pfmt[0].bytesperline * fmt->bit_depth[p]) / - fmt->bit_depth[0]; + (fmt->bit_depth[0] * fmt->vdownsampling[p]); mp->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; mp->quantization = V4L2_QUANTIZATION_DEFAULT; if (vivid_is_svid_out(dev)) {