From 329f268821509b9a3713f1bc3680d298d61d6230 Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Wed, 6 Nov 2019 23:34:20 +0100 Subject: media: hantro: Fix H264 motion vector buffer offset A decoded 8-bit 4:2:0 frame need memory for up to 448 bytes per macroblock and is laid out in memory as follow: +---------------------------+ | Y-plane 256 bytes x MBs | +---------------------------+ | UV-plane 128 bytes x MBs | +---------------------------+ | MV buffer 64 bytes x MBs | +---------------------------+ The motion vector buffer offset is currently correct for 4:2:0 because the extra space for motion vectors is overallocated with an extra 64 bytes x MBs. Wrong offset for both destination and motion vector buffer are used for the bottom field of field encoded content, wrong offset is also used for 4:0:0 (monochrome) content. Fix this by setting the motion vector address to the expected 384 bytes x MBs offset for 4:2:0 and 256 bytes x MBs offset for 4:0:0 content. Also use correct destination and motion vector buffer offset for the bottom field of field encoded content. While at it also extend the check for 4:0:0 (monochrome) to include an additional check for High Profile (100). Fixes: dea0a82f3d22 ("media: hantro: Add support for H264 decoding on G1") Signed-off-by: Jonas Karlman Reviewed-by: Boris Brezillon Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/hantro/hantro_g1_h264_dec.c | 31 ++++++++++++++++------- 1 file changed, 22 insertions(+), 9 deletions(-) (limited to 'drivers/staging/media/hantro') diff --git a/drivers/staging/media/hantro/hantro_g1_h264_dec.c b/drivers/staging/media/hantro/hantro_g1_h264_dec.c index 70a6b5b26477..30d977c3d529 100644 --- a/drivers/staging/media/hantro/hantro_g1_h264_dec.c +++ b/drivers/staging/media/hantro/hantro_g1_h264_dec.c @@ -81,7 +81,7 @@ static void set_params(struct hantro_ctx *ctx) reg |= G1_REG_DEC_CTRL4_CABAC_E; if (sps->flags & V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE) reg |= G1_REG_DEC_CTRL4_DIR_8X8_INFER_E; - if (sps->chroma_format_idc == 0) + if (sps->profile_idc >= 100 && sps->chroma_format_idc == 0) reg |= G1_REG_DEC_CTRL4_BLACKWHITE_E; if (pps->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) reg |= G1_REG_DEC_CTRL4_WEIGHT_PRED_E; @@ -234,6 +234,7 @@ static void set_buffers(struct hantro_ctx *ctx) struct vb2_v4l2_buffer *src_buf, *dst_buf; struct hantro_dev *vpu = ctx->dev; dma_addr_t src_dma, dst_dma; + size_t offset = 0; src_buf = hantro_get_src_buf(ctx); dst_buf = hantro_get_dst_buf(ctx); @@ -244,18 +245,30 @@ static void set_buffers(struct hantro_ctx *ctx) /* Destination (decoded frame) buffer. */ dst_dma = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0); - vdpu_write_relaxed(vpu, dst_dma, G1_REG_ADDR_DST); + /* Adjust dma addr to start at second line for bottom field */ + if (ctrls->slices[0].flags & V4L2_H264_SLICE_FLAG_BOTTOM_FIELD) + offset = ALIGN(ctx->src_fmt.width, MB_DIM); + vdpu_write_relaxed(vpu, dst_dma + offset, G1_REG_ADDR_DST); /* Higher profiles require DMV buffer appended to reference frames. */ if (ctrls->sps->profile_idc > 66 && ctrls->decode->nal_ref_idc) { - size_t pic_size = ctx->h264_dec.pic_size; - size_t mv_offset = round_up(pic_size, 8); - + unsigned int bytes_per_mb = 384; + + /* DMV buffer for monochrome start directly after Y-plane */ + if (ctrls->sps->profile_idc >= 100 && + ctrls->sps->chroma_format_idc == 0) + bytes_per_mb = 256; + offset = bytes_per_mb * MB_WIDTH(ctx->src_fmt.width) * + MB_HEIGHT(ctx->src_fmt.height); + + /* + * DMV buffer is split in two for field encoded frames, + * adjust offset for bottom field + */ if (ctrls->slices[0].flags & V4L2_H264_SLICE_FLAG_BOTTOM_FIELD) - mv_offset += 32 * MB_WIDTH(ctx->dst_fmt.width); - - vdpu_write_relaxed(vpu, dst_dma + mv_offset, - G1_REG_ADDR_DIR_MV); + offset += 32 * MB_WIDTH(ctx->src_fmt.width) * + MB_HEIGHT(ctx->src_fmt.height); + vdpu_write_relaxed(vpu, dst_dma + offset, G1_REG_ADDR_DIR_MV); } /* Auxiliary buffer prepared in hantro_g1_h264_dec_prepare_table(). */ -- cgit v1.2.3