> -----Original Message----- > From: Hans Verkuil [mailto:hverk...@xs4all.nl] > Sent: Monday, December 01, 2014 4:22 PM > To: Devshatwar, Nikhil; linux-media@vger.kernel.org > Subject: Re: [PATCH v3 4/4] media: ti-vpe: Add support for SEQ_TB > buffers > > On 11/29/2014 11:27 AM, Nikhil Devshatwar wrote: > > The video source can generate the data in the SEQ_TB buffer format. > > In the case of TI SoC, the IVA_HD can generate the interlaced content > > in the SEQ_TB buffer format. This is the format where the top and > > bottom field data can be contained in a single buffer. For example, > > for NV12, interlaced format, the data in Y buffer will be arranged as > Y-top followed by Y-bottom. > > And likewise for UV plane. > > > > Also, queueing one buffer of SEQ_TB is euivalent to queueing two > > different > > queueing -> queuing > euivalent -> equivalent > > > buffers for top and bottom fields. Driver needs to take care of this > > when handling source buffer lists. > > > > Signed-off-by: Nikhil Devshatwar <nikhil...@ti.com> > > Currently you are supporting SEQ_TB. Should SEQ_BT also be supported? I > don't know if you are aware but NTSC transmits the bottom field before > the top field, while PAL/SECAM transmit top before bottom. > > So for NTSC support having SEQ_BT might be useful. Up to you, though. > OK no problem I think that should be easy to add I will add this support and repost the patchset > Regards, > > Hans > > > --- > > Changes from v1: > > * Add check for valid field in qbuf ioctl > > * Fix issue with swapped fields > > > > drivers/media/platform/ti-vpe/vpe.c | 124 > > ++++++++++++++++++++++++++++------- > > 1 file changed, 102 insertions(+), 22 deletions(-) > > > > diff --git a/drivers/media/platform/ti-vpe/vpe.c > > b/drivers/media/platform/ti-vpe/vpe.c > > index 6a96bbf..b53aea5 100644 > > --- a/drivers/media/platform/ti-vpe/vpe.c > > +++ b/drivers/media/platform/ti-vpe/vpe.c > > @@ -319,9 +319,13 @@ struct vpe_q_data { }; > > > > /* vpe_q_data flag bits */ > > -#define Q_DATA_FRAME_1D (1 << 0) > > -#define Q_DATA_MODE_TILED (1 << 1) > > -#define Q_DATA_INTERLACED (1 << 2) > > +#define Q_DATA_FRAME_1D (1 << 0) > > +#define Q_DATA_MODE_TILED (1 << 1) > > +#define Q_DATA_INTERLACED_ALTERNATE (1 << 2) > > +#define Q_DATA_INTERLACED_SEQ_TB (1 << 3) > > + > > +#define Q_IS_INTERLACED (Q_DATA_INTERLACED_ALTERNATE | \ > > + Q_DATA_INTERLACED_SEQ_TB) > > > > enum { > > Q_DATA_SRC = 0, > > @@ -647,7 +651,7 @@ static void set_us_coefficients(struct vpe_ctx > > *ctx) > > > > cp = &us_coeffs[0].anchor_fid0_c0; > > > > - if (s_q_data->flags & Q_DATA_INTERLACED) /* interlaced */ > > + if (s_q_data->flags & Q_IS_INTERLACED) /* interlaced */ > > cp += sizeof(us_coeffs[0]) / sizeof(*cp); > > > > end_cp = cp + sizeof(us_coeffs[0]) / sizeof(*cp); @@ -774,8 > +778,7 > > @@ static void set_dei_regs(struct vpe_ctx *ctx) > > * for both progressive and interlace content in interlace bypass > mode. > > * It has been recommended not to use progressive bypass mode. > > */ > > - if ((!ctx->deinterlacing && (s_q_data->flags & > Q_DATA_INTERLACED)) || > > - !(s_q_data->flags & Q_DATA_INTERLACED)) { > > + if (!(s_q_data->flags & Q_IS_INTERLACED) || !ctx->deinterlacing) > { > > deinterlace = false; > > val = VPE_DEI_INTERLACE_BYPASS; > > } > > @@ -843,8 +846,8 @@ static int set_srcdst_params(struct vpe_ctx *ctx) > > ctx->sequence = 0; > > ctx->field = V4L2_FIELD_TOP; > > > > - if ((s_q_data->flags & Q_DATA_INTERLACED) && > > - !(d_q_data->flags & Q_DATA_INTERLACED)) { > > + if ((s_q_data->flags & Q_IS_INTERLACED) && > > + !(d_q_data->flags & Q_IS_INTERLACED)) { > > int bytes_per_line; > > const struct vpdma_data_format *mv = > > &vpdma_misc_fmts[VPDMA_DATA_FMT_MV]; > > @@ -1068,6 +1071,27 @@ static void add_in_dtd(struct vpe_ctx *ctx, > int port) > > vpdma_fmt = fmt->vpdma_fmt[plane]; > > > > dma_addr = vb2_dma_addr_plus_data_offset(vb, plane); > > + > > + if (q_data->flags & Q_DATA_INTERLACED_SEQ_TB) { > > + /* > > + * Use top or bottom field from same vb alternately > > + * f,f-1,f-2 = TBT when seq is even > > + * f,f-1,f-2 = BTB when seq is odd > > + */ > > + field = (p_data->vb_index + (ctx->sequence % 2)) % 2; > > + > > + if (field) { > > + /* bottom field of a SEQ_TB buffer > > + * Skip the top field data by */ > > + int height = q_data->height / 2; > > + int bpp = fmt->fourcc == V4L2_PIX_FMT_NV12 ? > > + 1 : (vpdma_fmt->depth >> 3); > > + if (plane) > > + height /= 2; > > + dma_addr += q_data->width * height * bpp; > > + } > > + } > > + > > if (!dma_addr) { > > vpe_err(ctx->dev, > > "acquiring input buffer(%d) dma_addr failed\n", > @@ -1122,9 > > +1146,22 @@ static void device_run(void *priv) > > struct vpe_ctx *ctx = priv; > > struct sc_data *sc = ctx->dev->sc; > > struct vpe_q_data *d_q_data = &ctx->q_data[Q_DATA_DST]; > > + struct vpe_q_data *s_q_data = &ctx->q_data[Q_DATA_SRC]; > > + > > + if (ctx->deinterlacing && s_q_data->flags & > Q_DATA_INTERLACED_SEQ_TB && > > + ctx->sequence % 2 == 0) { > > + /* When using SEQ_TB buffers, When using it first time, > > + * No need to remove the buffer as the next field is > present > > + * in the same buffer. (so that job_ready won't fail) > > + * It will be removed when using bottom field > > + */ > > + ctx->src_vbs[0] = v4l2_m2m_next_src_buf(ctx->m2m_ctx); > > + WARN_ON(ctx->src_vbs[0] == NULL); > > + } else { > > + ctx->src_vbs[0] = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); > > + WARN_ON(ctx->src_vbs[0] == NULL); > > + } > > > > - ctx->src_vbs[0] = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); > > - WARN_ON(ctx->src_vbs[0] == NULL); > > ctx->dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); > > WARN_ON(ctx->dst_vb == NULL); > > > > @@ -1256,6 +1293,7 @@ static irqreturn_t vpe_irq(int irq_vpe, void > *data) > > struct vpe_dev *dev = (struct vpe_dev *)data; > > struct vpe_ctx *ctx; > > struct vpe_q_data *d_q_data; > > + struct vpe_q_data *s_q_data; > > struct vb2_buffer *s_vb, *d_vb; > > struct v4l2_buffer *s_buf, *d_buf; > > unsigned long flags; > > @@ -1332,7 +1370,7 @@ static irqreturn_t vpe_irq(int irq_vpe, void > *data) > > d_buf->sequence = ctx->sequence; > > > > d_q_data = &ctx->q_data[Q_DATA_DST]; > > - if (d_q_data->flags & Q_DATA_INTERLACED) { > > + if (d_q_data->flags & Q_IS_INTERLACED) { > > d_buf->field = ctx->field; > > if (ctx->field == V4L2_FIELD_BOTTOM) { > > ctx->sequence++; > > @@ -1346,12 +1384,28 @@ static irqreturn_t vpe_irq(int irq_vpe, void > *data) > > ctx->sequence++; > > } > > > > - if (ctx->deinterlacing) > > - s_vb = ctx->src_vbs[2]; > > + s_q_data = &ctx->q_data[Q_DATA_SRC]; > > + > > + if (ctx->deinterlacing) { > > + /* Allow source buffer to be dequeued only if it won't be > used > > + * in the next iteration. All vbs are initialized to first > > + * buffer and we are shifting buffers every iteration, for > the > > + * first two iterations, no buffer will be dequeued. > > + * This ensures that driver will keep (n-2)th (n-1)th and > (n)th > > + * field when deinterlacing is enabled */ > > + if (ctx->src_vbs[2] != ctx->src_vbs[1]) > > + s_vb = ctx->src_vbs[2]; > > + else > > + s_vb = NULL; > > + } > > > > spin_lock_irqsave(&dev->lock, flags); > > - v4l2_m2m_buf_done(s_vb, VB2_BUF_STATE_DONE); > > + > > + if (s_vb) > > + v4l2_m2m_buf_done(s_vb, VB2_BUF_STATE_DONE); > > + > > v4l2_m2m_buf_done(d_vb, VB2_BUF_STATE_DONE); > > + > > spin_unlock_irqrestore(&dev->lock, flags); > > > > if (ctx->deinterlacing) { > > @@ -1467,7 +1521,7 @@ static int __vpe_try_fmt(struct vpe_ctx *ctx, > struct v4l2_format *f, > > struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; > > struct v4l2_plane_pix_format *plane_fmt; > > unsigned int w_align; > > - int i, depth, depth_bytes; > > + int i, depth, depth_bytes, height; > > > > if (!fmt || !(fmt->types & type)) { > > vpe_err(ctx->dev, "Fourcc format (0x%08x) invalid.\n", @@ - > 1475,7 > > +1529,8 @@ static int __vpe_try_fmt(struct vpe_ctx *ctx, struct > v4l2_format *f, > > return -EINVAL; > > } > > > > - if (pix->field != V4L2_FIELD_NONE && pix->field != > V4L2_FIELD_ALTERNATE) > > + if (pix->field != V4L2_FIELD_NONE && pix->field != > V4L2_FIELD_ALTERNATE > > + && pix->field != V4L2_FIELD_SEQ_TB) > > pix->field = V4L2_FIELD_NONE; > > > > depth = fmt->vpdma_fmt[VPE_LUMA]->depth; @@ -1509,6 +1564,14 @@ > > static int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f, > > pix->num_planes = fmt->coplanar ? 2 : 1; > > pix->pixelformat = fmt->fourcc; > > > > + /* for the actual image parameters, we need to consider the field > height > > + * of the image for SEQ_TB buffers. > > + */ > > + if (pix->field == V4L2_FIELD_SEQ_TB) > > + height = pix->height / 2; > > + else > > + height = pix->height; > > + > > if (!pix->colorspace) { > > if (fmt->fourcc == V4L2_PIX_FMT_RGB24 || > > fmt->fourcc == V4L2_PIX_FMT_BGR24 || @@ -1516,7 > +1579,7 @@ static > > int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f, > > fmt->fourcc == V4L2_PIX_FMT_BGR32) { > > pix->colorspace = V4L2_COLORSPACE_SRGB; > > } else { > > - if (pix->height > 1280) /* HD */ > > + if (height > 1280) /* HD */ > > pix->colorspace = V4L2_COLORSPACE_REC709; > > else /* SD */ > > pix->colorspace = V4L2_COLORSPACE_SMPTE170M; @@ > -1593,9 +1656,15 > > @@ static int __vpe_s_fmt(struct vpe_ctx *ctx, struct v4l2_format *f) > > q_data->c_rect.height = q_data->height; > > > > if (q_data->field == V4L2_FIELD_ALTERNATE) > > - q_data->flags |= Q_DATA_INTERLACED; > > + q_data->flags |= Q_DATA_INTERLACED_ALTERNATE; > > + else if (q_data->field == V4L2_FIELD_SEQ_TB) > > + q_data->flags |= Q_DATA_INTERLACED_SEQ_TB; > > else > > - q_data->flags &= ~Q_DATA_INTERLACED; > > + q_data->flags &= ~Q_IS_INTERLACED; > > + > > + /* the crop height is halved for the case of SEQ_TB buffers */ > > + if (q_data->flags & Q_DATA_INTERLACED_SEQ_TB) > > + q_data->c_rect.height /= 2; > > > > vpe_dbg(ctx->dev, "Setting format for type %d, wxh: %dx%d, fmt: > %d bpl_y %d", > > f->type, q_data->width, q_data->height, q_data->fmt- > >fourcc, @@ > > -1631,6 +1700,7 @@ static int vpe_s_fmt(struct file *file, void > *priv, > > struct v4l2_format *f) static int __vpe_try_selection(struct vpe_ctx > > *ctx, struct v4l2_selection *s) { > > struct vpe_q_data *q_data; > > + int height; > > > > if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) && > > (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)) @@ -1665,13 +1735,22 > @@ > > static int __vpe_try_selection(struct vpe_ctx *ctx, struct > v4l2_selection *s) > > return -EINVAL; > > } > > > > + /* > > + * For SEQ_TB buffers, crop height should be less than the height > of > > + * the field height, not the buffer height > > + */ > > + if (q_data->flags & Q_DATA_INTERLACED_SEQ_TB) > > + height = q_data->height / 2; > > + else > > + height = q_data->height; > > + > > if (s->r.top < 0 || s->r.left < 0) { > > vpe_err(ctx->dev, "negative values for top and left\n"); > > s->r.top = s->r.left = 0; > > } > > > > v4l_bound_align_image(&s->r.width, MIN_W, q_data->width, 1, > > - &s->r.height, MIN_H, q_data->height, H_ALIGN, S_ALIGN); > > + &s->r.height, MIN_H, height, H_ALIGN, S_ALIGN); > > > > /* adjust left/top if cropping rectangle is out of bounds */ > > if (s->r.left + s->r.width > q_data->width) @@ -1919,11 +1998,12 > @@ > > static int vpe_buf_prepare(struct vb2_buffer *vb) > > num_planes = q_data->fmt->coplanar ? 2 : 1; > > > > if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { > > - if (!(q_data->flags & Q_DATA_INTERLACED)) { > > + if (!(q_data->flags & Q_IS_INTERLACED)) { > > vb->v4l2_buf.field = V4L2_FIELD_NONE; > > } else { > > if (vb->v4l2_buf.field != V4L2_FIELD_TOP && > > - vb->v4l2_buf.field != V4L2_FIELD_BOTTOM) > > + vb->v4l2_buf.field != V4L2_FIELD_BOTTOM && > > + vb->v4l2_buf.field != V4L2_FIELD_SEQ_TB) > > return -EINVAL; > > } > > } > >
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