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media: cedrus: hevc: Add support for multiple slices 

Now that segment address is available, support for multi-slice frames
can be easily added.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Jernej Skrabec 2021-06-06 10:23:14 +02:00 committed by Mauro Carvalho Chehab
parent 229e5bdcd3
commit d92a4a27d9
2 changed files with 17 additions and 10 deletions
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26
drivers/staging/media/sunxi/cedrus/cedrus_h265.c
View File

@ -247,6 +247,8 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
const struct v4l2_ctrl_hevc_slice_params *slice_params;
const struct v4l2_ctrl_hevc_decode_params *decode_params;
const struct v4l2_hevc_pred_weight_table *pred_weight_table;
unsigned int width_in_ctb_luma, ctb_size_luma;
unsigned int log2_max_luma_coding_block_size;
dma_addr_t src_buf_addr;
dma_addr_t src_buf_end_addr;
u32 chroma_log2_weight_denom;
@ -260,15 +262,17 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
decode_params = run->h265.decode_params;
pred_weight_table = &slice_params->pred_weight_table;
log2_max_luma_coding_block_size =
sps->log2_min_luma_coding_block_size_minus3 + 3 +
sps->log2_diff_max_min_luma_coding_block_size;
ctb_size_luma = 1UL << log2_max_luma_coding_block_size;
width_in_ctb_luma =
DIV_ROUND_UP(sps->pic_width_in_luma_samples, ctb_size_luma);
/* MV column buffer size and allocation. */
if (!ctx->codec.h265.mv_col_buf_size) {
unsigned int num_buffers =
run->dst->vb2_buf.vb2_queue->num_buffers;
unsigned int log2_max_luma_coding_block_size =
sps->log2_min_luma_coding_block_size_minus3 + 3 +
sps->log2_diff_max_min_luma_coding_block_size;
unsigned int ctb_size_luma =
1UL << log2_max_luma_coding_block_size;
/*
* Each CTB requires a MV col buffer with a specific unit size.
@ -322,15 +326,17 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
reg = VE_DEC_H265_BITS_END_ADDR_BASE(src_buf_end_addr);
cedrus_write(dev, VE_DEC_H265_BITS_END_ADDR, reg);
/* Coding tree block address: start at the beginning. */
reg = VE_DEC_H265_DEC_CTB_ADDR_X(0) | VE_DEC_H265_DEC_CTB_ADDR_Y(0);
/* Coding tree block address */
reg = VE_DEC_H265_DEC_CTB_ADDR_X(slice_params->slice_segment_addr % width_in_ctb_luma);
reg |= VE_DEC_H265_DEC_CTB_ADDR_Y(slice_params->slice_segment_addr / width_in_ctb_luma);
cedrus_write(dev, VE_DEC_H265_DEC_CTB_ADDR, reg);
cedrus_write(dev, VE_DEC_H265_TILE_START_CTB, 0);
cedrus_write(dev, VE_DEC_H265_TILE_END_CTB, 0);
/* Clear the number of correctly-decoded coding tree blocks. */
cedrus_write(dev, VE_DEC_H265_DEC_CTB_NUM, 0);
if (ctx->fh.m2m_ctx->new_frame)
cedrus_write(dev, VE_DEC_H265_DEC_CTB_NUM, 0);
/* Initialize bitstream access. */
cedrus_write(dev, VE_DEC_H265_TRIGGER, VE_DEC_H265_TRIGGER_INIT_SWDEC);
@ -482,8 +488,8 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT,
slice_params->flags);
/* FIXME: For multi-slice support. */
reg |= VE_DEC_H265_DEC_SLICE_HDR_INFO0_FLAG_FIRST_SLICE_SEGMENT_IN_PIC;
if (ctx->fh.m2m_ctx->new_frame)
reg |= VE_DEC_H265_DEC_SLICE_HDR_INFO0_FLAG_FIRST_SLICE_SEGMENT_IN_PIC;
cedrus_write(dev, VE_DEC_H265_DEC_SLICE_HDR_INFO0, reg);

1
drivers/staging/media/sunxi/cedrus/cedrus_video.c
View File

@ -340,6 +340,7 @@ static int cedrus_s_fmt_vid_out(struct file *file, void *priv,
switch (ctx->src_fmt.pixelformat) {
case V4L2_PIX_FMT_H264_SLICE:
case V4L2_PIX_FMT_HEVC_SLICE:
vq->subsystem_flags |=
VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
break;