Hans Verkuil <[email protected]> wrote on Mon [2016-Oct-17 16:14:35 +0200]: > On 09/28/2016 11:20 PM, Benoit Parrot wrote: > > From: Archit Taneja <[email protected]> > > > > For n input fields, the VPE de-interlacer creates n - 2 progressive frames. > > That's confusing. I think you mean '(n / 2) - 1'? Two fields make one frame, > right?
No it is (N - 2), the motion detection block requires 3 fields to create the motion vector data. So without doing anything special the first progressive frame would be generated after the 3 field is consumed and then a progressive frame is generated every field after that always keeping the last 2 fields in reserve. This patch adds a special modes so that line averaging mode is use for the first two fields so that in the end we get N progressive frames generated from N fields. Benoit > > Regards, > > Hans > > > > > To support this, we use line average mode of de-interlacer for the first 2 > > input fields to generate 2 progressive frames. We then revert back to the > > preferred EDI method, and create n - 2 frames, creating a sum of n frames. > > > > Signed-off-by: Archit Taneja <[email protected]> > > Signed-off-by: Nikhil Devshatwar <[email protected]> > > Signed-off-by: Benoit Parrot <[email protected]> > > --- > > drivers/media/platform/ti-vpe/vpe.c | 33 +++++++++++++++++++++++++++++++-- > > 1 file changed, 31 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/media/platform/ti-vpe/vpe.c > > b/drivers/media/platform/ti-vpe/vpe.c > > index 3921fd8cdf1d..a0b29685fb69 100644 > > --- a/drivers/media/platform/ti-vpe/vpe.c > > +++ b/drivers/media/platform/ti-vpe/vpe.c > > @@ -141,7 +141,7 @@ struct vpe_dei_regs { > > */ > > static const struct vpe_dei_regs dei_regs = { > > .mdt_spacial_freq_thr_reg = 0x020C0804u, > > - .edi_config_reg = 0x0118100Fu, > > + .edi_config_reg = 0x0118100Cu, > > .edi_lut_reg0 = 0x08040200u, > > .edi_lut_reg1 = 0x1010100Cu, > > .edi_lut_reg2 = 0x10101010u, > > @@ -798,6 +798,23 @@ static void set_dei_shadow_registers(struct vpe_ctx > > *ctx) > > ctx->load_mmrs = true; > > } > > > > +static void config_edi_input_mode(struct vpe_ctx *ctx, int mode) > > +{ > > + struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr; > > + u32 *edi_config_reg = &mmr_adb->dei_regs[3]; > > + > > + if (mode & 0x2) > > + write_field(edi_config_reg, 1, 1, 2); /* EDI_ENABLE_3D */ > > + > > + if (mode & 0x3) > > + write_field(edi_config_reg, 1, 1, 3); /* EDI_CHROMA_3D */ > > + > > + write_field(edi_config_reg, mode, VPE_EDI_INP_MODE_MASK, > > + VPE_EDI_INP_MODE_SHIFT); > > + > > + ctx->load_mmrs = true; > > +} > > + > > /* > > * Set the shadow registers whose values are modified when either the > > * source or destination format is changed. > > @@ -1111,6 +1128,15 @@ static void device_run(void *priv) > > ctx->dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); > > WARN_ON(ctx->dst_vb == NULL); > > > > + if (ctx->deinterlacing) { > > + /* > > + * we have output the first 2 frames through line average, we > > + * now switch to EDI de-interlacer > > + */ > > + if (ctx->sequence == 2) > > + config_edi_input_mode(ctx, 0x3); /* EDI (Y + UV) */ > > + } > > + > > /* config descriptors */ > > if (ctx->dev->loaded_mmrs != ctx->mmr_adb.dma_addr || ctx->load_mmrs) { > > vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->mmr_adb); > > @@ -1865,7 +1891,10 @@ static void vpe_buf_queue(struct vb2_buffer *vb) > > > > static int vpe_start_streaming(struct vb2_queue *q, unsigned int count) > > { > > - /* currently we do nothing here */ > > + struct vpe_ctx *ctx = vb2_get_drv_priv(q); > > + > > + if (ctx->deinterlacing) > > + config_edi_input_mode(ctx, 0x0); > > > > return 0; > > } > >
