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media: mtk-vcodec: vdec: support stateless H.264 decoding

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Add support for H.264 decoding using the stateless API, as supported by
MT8183. This support takes advantage of the V4L2 H.264 reference list
builders.

[acourbot: refactor, cleanup and split]
[tzungbi: fix missing kerneldoc issue]
[hverkuil: fix trivial kerneldoc typo]

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Co-developed-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@google.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:
Yunfei Dong 2021-08-06 06:15:27 +02:00 committed by Mauro Carvalho Chehab
parent 8cdc3794b2
commit 06fa5f757d
5 changed files with 780 additions and 0 deletions
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1
drivers/media/platform/Kconfig
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@ -314,6 +314,7 @@ config VIDEO_MEDIATEK_VCODEC
select V4L2_MEM2MEM_DEV
select VIDEO_MEDIATEK_VCODEC_VPU if VIDEO_MEDIATEK_VPU
select VIDEO_MEDIATEK_VCODEC_SCP if MTK_SCP
select V4L2_H264
help
Mediatek video codec driver provides HW capability to
encode and decode in a range of video formats on MT8173

1
drivers/media/platform/mtk-vcodec/Makefile
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@ -7,6 +7,7 @@ obj-$(CONFIG_VIDEO_MEDIATEK_VCODEC) += mtk-vcodec-dec.o \
mtk-vcodec-dec-y := vdec/vdec_h264_if.o \
vdec/vdec_vp8_if.o \
vdec/vdec_vp9_if.o \
vdec/vdec_h264_req_if.o \
mtk_vcodec_dec_drv.o \
vdec_drv_if.o \
vdec_vpu_if.o \

774
drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c Normal file
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@ -0,0 +1,774 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/slab.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-h264.h>
#include <media/videobuf2-dma-contig.h>
#include "../mtk_vcodec_util.h"
#include "../mtk_vcodec_dec.h"
#include "../mtk_vcodec_intr.h"
#include "../vdec_drv_base.h"
#include "../vdec_drv_if.h"
#include "../vdec_vpu_if.h"
#define BUF_PREDICTION_SZ (64 * 4096)
#define MB_UNIT_LEN 16
/* get used parameters for sps/pps */
#define GET_MTK_VDEC_FLAG(cond, flag) \
{ dst_param->cond = ((src_param->flags & (flag)) ? (1) : (0)); }
#define GET_MTK_VDEC_PARAM(param) \
{ dst_param->param = src_param->param; }
/* motion vector size (bytes) for every macro block */
#define HW_MB_STORE_SZ 64
#define H264_MAX_FB_NUM 17
#define H264_MAX_MV_NUM 32
#define HDR_PARSING_BUF_SZ 1024
/**
* struct mtk_h264_dpb_info - h264 dpb information
* @y_dma_addr: Y bitstream physical address
* @c_dma_addr: CbCr bitstream physical address
* @reference_flag: reference picture flag (short/long term reference picture)
* @field: field picture flag
*/
struct mtk_h264_dpb_info {
dma_addr_t y_dma_addr;
dma_addr_t c_dma_addr;
int reference_flag;
int field;
};
/*
* struct mtk_h264_sps_param - parameters for sps
*/
struct mtk_h264_sps_param {
unsigned char chroma_format_idc;
unsigned char bit_depth_luma_minus8;
unsigned char bit_depth_chroma_minus8;
unsigned char log2_max_frame_num_minus4;
unsigned char pic_order_cnt_type;
unsigned char log2_max_pic_order_cnt_lsb_minus4;
unsigned char max_num_ref_frames;
unsigned char separate_colour_plane_flag;
unsigned short pic_width_in_mbs_minus1;
unsigned short pic_height_in_map_units_minus1;
unsigned int max_frame_nums;
unsigned char qpprime_y_zero_transform_bypass_flag;
unsigned char delta_pic_order_always_zero_flag;
unsigned char frame_mbs_only_flag;
unsigned char mb_adaptive_frame_field_flag;
unsigned char direct_8x8_inference_flag;
unsigned char reserved[3];
};
/*
* struct mtk_h264_pps_param - parameters for pps
*/
struct mtk_h264_pps_param {
unsigned char num_ref_idx_l0_default_active_minus1;
unsigned char num_ref_idx_l1_default_active_minus1;
unsigned char weighted_bipred_idc;
char pic_init_qp_minus26;
char chroma_qp_index_offset;
char second_chroma_qp_index_offset;
unsigned char entropy_coding_mode_flag;
unsigned char pic_order_present_flag;
unsigned char deblocking_filter_control_present_flag;
unsigned char constrained_intra_pred_flag;
unsigned char weighted_pred_flag;
unsigned char redundant_pic_cnt_present_flag;
unsigned char transform_8x8_mode_flag;
unsigned char scaling_matrix_present_flag;
unsigned char reserved[2];
};
struct slice_api_h264_scaling_matrix {
unsigned char scaling_list_4x4[6][16];
unsigned char scaling_list_8x8[6][64];
};
struct slice_h264_dpb_entry {
unsigned long long reference_ts;
unsigned short frame_num;
unsigned short pic_num;
/* Note that field is indicated by v4l2_buffer.field */
int top_field_order_cnt;
int bottom_field_order_cnt;
unsigned int flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
};
/*
* struct slice_api_h264_decode_param - parameters for decode.
*/
struct slice_api_h264_decode_param {
struct slice_h264_dpb_entry dpb[16];
unsigned short num_slices;
unsigned short nal_ref_idc;
unsigned char ref_pic_list_p0[32];
unsigned char ref_pic_list_b0[32];
unsigned char ref_pic_list_b1[32];
int top_field_order_cnt;
int bottom_field_order_cnt;
unsigned int flags; /* V4L2_H264_DECODE_PARAM_FLAG_* */
};
/*
* struct mtk_h264_dec_slice_param - parameters for decode current frame
*/
struct mtk_h264_dec_slice_param {
struct mtk_h264_sps_param sps;
struct mtk_h264_pps_param pps;
struct slice_api_h264_scaling_matrix scaling_matrix;
struct slice_api_h264_decode_param decode_params;
struct mtk_h264_dpb_info h264_dpb_info[16];
};
/**
* struct h264_fb - h264 decode frame buffer information
* @vdec_fb_va : virtual address of struct vdec_fb
* @y_fb_dma : dma address of Y frame buffer (luma)
* @c_fb_dma : dma address of C frame buffer (chroma)
* @poc : picture order count of frame buffer
* @reserved : for 8 bytes alignment
*/
struct h264_fb {
u64 vdec_fb_va;
u64 y_fb_dma;
u64 c_fb_dma;
s32 poc;
u32 reserved;
};
/**
* struct vdec_h264_dec_info - decode information
* @dpb_sz : decoding picture buffer size
* @resolution_changed : resoltion change happen
* @realloc_mv_buf : flag to notify driver to re-allocate mv buffer
* @cap_num_planes : number planes of capture buffer
* @bs_dma : Input bit-stream buffer dma address
* @y_fb_dma : Y frame buffer dma address
* @c_fb_dma : C frame buffer dma address
* @vdec_fb_va : VDEC frame buffer struct virtual address
*/
struct vdec_h264_dec_info {
u32 dpb_sz;
u32 resolution_changed;
u32 realloc_mv_buf;
u32 cap_num_planes;
u64 bs_dma;
u64 y_fb_dma;
u64 c_fb_dma;
u64 vdec_fb_va;
};
/**
* struct vdec_h264_vsi - shared memory for decode information exchange
* between VPU and Host.
* The memory is allocated by VPU then mapping to Host
* in vpu_dec_init() and freed in vpu_dec_deinit()
* by VPU.
* AP-W/R : AP is writer/reader on this item
* VPU-W/R: VPU is write/reader on this item
* @pred_buf_dma : HW working predication buffer dma address (AP-W, VPU-R)
* @mv_buf_dma : HW working motion vector buffer dma address (AP-W, VPU-R)
* @dec : decode information (AP-R, VPU-W)
* @pic : picture information (AP-R, VPU-W)
* @crop : crop information (AP-R, VPU-W)
* @h264_slice_params : the parameters that hardware use to decode
*/
struct vdec_h264_vsi {
u64 pred_buf_dma;
u64 mv_buf_dma[H264_MAX_MV_NUM];
struct vdec_h264_dec_info dec;
struct vdec_pic_info pic;
struct v4l2_rect crop;
struct mtk_h264_dec_slice_param h264_slice_params;
};
/**
* struct vdec_h264_slice_inst - h264 decoder instance
* @num_nalu : how many nalus be decoded
* @ctx : point to mtk_vcodec_ctx
* @pred_buf : HW working predication buffer
* @mv_buf : HW working motion vector buffer
* @vpu : VPU instance
* @vsi_ctx : Local VSI data for this decoding context
* @h264_slice_param : the parameters that hardware use to decode
* @dpb : decoded picture buffer used to store reference buffer information
*/
struct vdec_h264_slice_inst {
unsigned int num_nalu;
struct mtk_vcodec_ctx *ctx;
struct mtk_vcodec_mem pred_buf;
struct mtk_vcodec_mem mv_buf[H264_MAX_MV_NUM];
struct vdec_vpu_inst vpu;
struct vdec_h264_vsi vsi_ctx;
struct mtk_h264_dec_slice_param h264_slice_param;
struct v4l2_h264_dpb_entry dpb[16];
};
static void *get_ctrl_ptr(struct mtk_vcodec_ctx *ctx, int id)
{
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(&ctx->ctrl_hdl, id);
return ctrl->p_cur.p;
}
static void get_h264_dpb_list(struct vdec_h264_slice_inst *inst,
struct mtk_h264_dec_slice_param *slice_param)
{
struct vb2_queue *vq;
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vb2_v4l2;
u64 index;
vq = v4l2_m2m_get_vq(inst->ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
for (index = 0; index < ARRAY_SIZE(slice_param->decode_params.dpb); index++) {
const struct slice_h264_dpb_entry *dpb;
int vb2_index;
dpb = &slice_param->decode_params.dpb[index];
if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)) {
slice_param->h264_dpb_info[index].reference_flag = 0;
continue;
}
vb2_index = vb2_find_timestamp(vq, dpb->reference_ts, 0);
if (vb2_index < 0) {
mtk_vcodec_err(inst, "Reference invalid: dpb_index(%lld) reference_ts(%lld)",
index, dpb->reference_ts);
continue;
}
/* 1 for short term reference, 2 for long term reference */
if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM))
slice_param->h264_dpb_info[index].reference_flag = 1;
else
slice_param->h264_dpb_info[index].reference_flag = 2;
vb = vq->bufs[vb2_index];
vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
slice_param->h264_dpb_info[index].field = vb2_v4l2->field;
slice_param->h264_dpb_info[index].y_dma_addr =
vb2_dma_contig_plane_dma_addr(vb, 0);
if (inst->ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2) {
slice_param->h264_dpb_info[index].c_dma_addr =
vb2_dma_contig_plane_dma_addr(vb, 1);
}
}
}
static void get_h264_sps_parameters(struct mtk_h264_sps_param *dst_param,
const struct v4l2_ctrl_h264_sps *src_param)
{
GET_MTK_VDEC_PARAM(chroma_format_idc);
GET_MTK_VDEC_PARAM(bit_depth_luma_minus8);
GET_MTK_VDEC_PARAM(bit_depth_chroma_minus8);
GET_MTK_VDEC_PARAM(log2_max_frame_num_minus4);
GET_MTK_VDEC_PARAM(pic_order_cnt_type);
GET_MTK_VDEC_PARAM(log2_max_pic_order_cnt_lsb_minus4);
GET_MTK_VDEC_PARAM(max_num_ref_frames);
GET_MTK_VDEC_PARAM(pic_width_in_mbs_minus1);
GET_MTK_VDEC_PARAM(pic_height_in_map_units_minus1);
GET_MTK_VDEC_FLAG(separate_colour_plane_flag,
V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE);
GET_MTK_VDEC_FLAG(qpprime_y_zero_transform_bypass_flag,
V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS);
GET_MTK_VDEC_FLAG(delta_pic_order_always_zero_flag,
V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO);
GET_MTK_VDEC_FLAG(frame_mbs_only_flag,
V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY);
GET_MTK_VDEC_FLAG(mb_adaptive_frame_field_flag,
V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD);
GET_MTK_VDEC_FLAG(direct_8x8_inference_flag,
V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE);
}
static void get_h264_pps_parameters(struct mtk_h264_pps_param *dst_param,
const struct v4l2_ctrl_h264_pps *src_param)
{
GET_MTK_VDEC_PARAM(num_ref_idx_l0_default_active_minus1);
GET_MTK_VDEC_PARAM(num_ref_idx_l1_default_active_minus1);
GET_MTK_VDEC_PARAM(weighted_bipred_idc);
GET_MTK_VDEC_PARAM(pic_init_qp_minus26);
GET_MTK_VDEC_PARAM(chroma_qp_index_offset);
GET_MTK_VDEC_PARAM(second_chroma_qp_index_offset);
GET_MTK_VDEC_FLAG(entropy_coding_mode_flag,
V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE);
GET_MTK_VDEC_FLAG(pic_order_present_flag,
V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT);
GET_MTK_VDEC_FLAG(weighted_pred_flag,
V4L2_H264_PPS_FLAG_WEIGHTED_PRED);
GET_MTK_VDEC_FLAG(deblocking_filter_control_present_flag,
V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT);
GET_MTK_VDEC_FLAG(constrained_intra_pred_flag,
V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED);
GET_MTK_VDEC_FLAG(redundant_pic_cnt_present_flag,
V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT);
GET_MTK_VDEC_FLAG(transform_8x8_mode_flag,
V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE);
GET_MTK_VDEC_FLAG(scaling_matrix_present_flag,
V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT);
}
static void
get_h264_scaling_matrix(struct slice_api_h264_scaling_matrix *dst_matrix,
const struct v4l2_ctrl_h264_scaling_matrix *src_matrix)
{
memcpy(dst_matrix->scaling_list_4x4, src_matrix->scaling_list_4x4,
sizeof(dst_matrix->scaling_list_4x4));
memcpy(dst_matrix->scaling_list_8x8, src_matrix->scaling_list_8x8,
sizeof(dst_matrix->scaling_list_8x8));
}
static void
get_h264_decode_parameters(struct slice_api_h264_decode_param *dst_params,
const struct v4l2_ctrl_h264_decode_params *src_params,
const struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES])
{
int i;
for (i = 0; i < ARRAY_SIZE(dst_params->dpb); i++) {
struct slice_h264_dpb_entry *dst_entry = &dst_params->dpb[i];
const struct v4l2_h264_dpb_entry *src_entry = &dpb[i];
dst_entry->reference_ts = src_entry->reference_ts;
dst_entry->frame_num = src_entry->frame_num;
dst_entry->pic_num = src_entry->pic_num;
dst_entry->top_field_order_cnt = src_entry->top_field_order_cnt;
dst_entry->bottom_field_order_cnt =
src_entry->bottom_field_order_cnt;
dst_entry->flags = src_entry->flags;
}
/*
* num_slices is a leftover from the old H.264 support and is ignored
* by the firmware.
*/
dst_params->num_slices = 0;
dst_params->nal_ref_idc = src_params->nal_ref_idc;
dst_params->top_field_order_cnt = src_params->top_field_order_cnt;
dst_params->bottom_field_order_cnt = src_params->bottom_field_order_cnt;
dst_params->flags = src_params->flags;
}
static bool dpb_entry_match(const struct v4l2_h264_dpb_entry *a,
const struct v4l2_h264_dpb_entry *b)
{
return a->top_field_order_cnt == b->top_field_order_cnt &&
a->bottom_field_order_cnt == b->bottom_field_order_cnt;
}
/*
* Move DPB entries of dec_param that refer to a frame already existing in dpb
* into the already existing slot in dpb, and move other entries into new slots.
*
* This function is an adaptation of the similarly-named function in
* hantro_h264.c.
*/
static void update_dpb(const struct v4l2_ctrl_h264_decode_params *dec_param,
struct v4l2_h264_dpb_entry *dpb)
{
DECLARE_BITMAP(new, ARRAY_SIZE(dec_param->dpb)) = { 0, };
DECLARE_BITMAP(in_use, ARRAY_SIZE(dec_param->dpb)) = { 0, };
DECLARE_BITMAP(used, ARRAY_SIZE(dec_param->dpb)) = { 0, };
unsigned int i, j;
/* Disable all entries by default, and mark the ones in use. */
for (i = 0; i < ARRAY_SIZE(dec_param->dpb); i++) {
if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
set_bit(i, in_use);
dpb[i].flags &= ~V4L2_H264_DPB_ENTRY_FLAG_ACTIVE;
}
/* Try to match new DPB entries with existing ones by their POCs. */
for (i = 0; i < ARRAY_SIZE(dec_param->dpb); i++) {
const struct v4l2_h264_dpb_entry *ndpb = &dec_param->dpb[i];
if (!(ndpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE))
continue;
/*
* To cut off some comparisons, iterate only on target DPB
* entries were already used.
*/
for_each_set_bit(j, in_use, ARRAY_SIZE(dec_param->dpb)) {
struct v4l2_h264_dpb_entry *cdpb;
cdpb = &dpb[j];
if (!dpb_entry_match(cdpb, ndpb))
continue;
*cdpb = *ndpb;
set_bit(j, used);
/* Don't reiterate on this one. */
clear_bit(j, in_use);
break;
}
if (j == ARRAY_SIZE(dec_param->dpb))
set_bit(i, new);
}
/* For entries that could not be matched, use remaining free slots. */
for_each_set_bit(i, new, ARRAY_SIZE(dec_param->dpb)) {
const struct v4l2_h264_dpb_entry *ndpb = &dec_param->dpb[i];
struct v4l2_h264_dpb_entry *cdpb;
/*
* Both arrays are of the same sizes, so there is no way
* we can end up with no space in target array, unless
* something is buggy.
*/
j = find_first_zero_bit(used, ARRAY_SIZE(dec_param->dpb));
if (WARN_ON(j >= ARRAY_SIZE(dec_param->dpb)))
return;
cdpb = &dpb[j];
*cdpb = *ndpb;
set_bit(j, used);
}
}
/*
* The firmware expects unused reflist entries to have the value 0x20.
*/
static void fixup_ref_list(u8 *ref_list, size_t num_valid)
{
memset(&ref_list[num_valid], 0x20, 32 - num_valid);
}
static void get_vdec_decode_parameters(struct vdec_h264_slice_inst *inst)
{
const struct v4l2_ctrl_h264_decode_params *dec_params =
get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
const struct v4l2_ctrl_h264_sps *sps =
get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SPS);
const struct v4l2_ctrl_h264_pps *pps =
get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_PPS);
const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix =
get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SCALING_MATRIX);
struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
struct v4l2_h264_reflist_builder reflist_builder;
u8 *p0_reflist = slice_param->decode_params.ref_pic_list_p0;
u8 *b0_reflist = slice_param->decode_params.ref_pic_list_b0;
u8 *b1_reflist = slice_param->decode_params.ref_pic_list_b1;
update_dpb(dec_params, inst->dpb);
get_h264_sps_parameters(&slice_param->sps, sps);
get_h264_pps_parameters(&slice_param->pps, pps);
get_h264_scaling_matrix(&slice_param->scaling_matrix, scaling_matrix);
get_h264_decode_parameters(&slice_param->decode_params, dec_params,
inst->dpb);
get_h264_dpb_list(inst, slice_param);
/* Build the reference lists */
v4l2_h264_init_reflist_builder(&reflist_builder, dec_params, sps,
inst->dpb);
v4l2_h264_build_p_ref_list(&reflist_builder, p0_reflist);
v4l2_h264_build_b_ref_lists(&reflist_builder, b0_reflist, b1_reflist);
/* Adapt the built lists to the firmware's expectations */
fixup_ref_list(p0_reflist, reflist_builder.num_valid);
fixup_ref_list(b0_reflist, reflist_builder.num_valid);
fixup_ref_list(b1_reflist, reflist_builder.num_valid);
memcpy(&inst->vsi_ctx.h264_slice_params, slice_param,
sizeof(inst->vsi_ctx.h264_slice_params));
}
static unsigned int get_mv_buf_size(unsigned int width, unsigned int height)
{
int unit_size = (width / MB_UNIT_LEN) * (height / MB_UNIT_LEN) + 8;
return HW_MB_STORE_SZ * unit_size;
}
static int allocate_predication_buf(struct vdec_h264_slice_inst *inst)
{
int err;
inst->pred_buf.size = BUF_PREDICTION_SZ;
err = mtk_vcodec_mem_alloc(inst->ctx, &inst->pred_buf);
if (err) {
mtk_vcodec_err(inst, "failed to allocate ppl buf");
return err;
}
inst->vsi_ctx.pred_buf_dma = inst->pred_buf.dma_addr;
return 0;
}
static void free_predication_buf(struct vdec_h264_slice_inst *inst)
{
struct mtk_vcodec_mem *mem = &inst->pred_buf;
mtk_vcodec_debug_enter(inst);
inst->vsi_ctx.pred_buf_dma = 0;
if (mem->va)
mtk_vcodec_mem_free(inst->ctx, mem);
}
static int alloc_mv_buf(struct vdec_h264_slice_inst *inst,
struct vdec_pic_info *pic)
{
int i;
int err;
struct mtk_vcodec_mem *mem = NULL;
unsigned int buf_sz = get_mv_buf_size(pic->buf_w, pic->buf_h);
mtk_v4l2_debug(3, "size = 0x%lx", buf_sz);
for (i = 0; i < H264_MAX_MV_NUM; i++) {
mem = &inst->mv_buf[i];
if (mem->va)
mtk_vcodec_mem_free(inst->ctx, mem);
mem->size = buf_sz;
err = mtk_vcodec_mem_alloc(inst->ctx, mem);
if (err) {
mtk_vcodec_err(inst, "failed to allocate mv buf");
return err;
}
inst->vsi_ctx.mv_buf_dma[i] = mem->dma_addr;
}
return 0;
}
static void free_mv_buf(struct vdec_h264_slice_inst *inst)
{
int i;
struct mtk_vcodec_mem *mem;
for (i = 0; i < H264_MAX_MV_NUM; i++) {
inst->vsi_ctx.mv_buf_dma[i] = 0;
mem = &inst->mv_buf[i];
if (mem->va)
mtk_vcodec_mem_free(inst->ctx, mem);
}
}
static void get_pic_info(struct vdec_h264_slice_inst *inst,
struct vdec_pic_info *pic)
{
struct mtk_vcodec_ctx *ctx = inst->ctx;
ctx->picinfo.buf_w = (ctx->picinfo.pic_w + 15) & 0xFFFFFFF0;
ctx->picinfo.buf_h = (ctx->picinfo.pic_h + 31) & 0xFFFFFFE0;
ctx->picinfo.fb_sz[0] = ctx->picinfo.buf_w * ctx->picinfo.buf_h;
ctx->picinfo.fb_sz[1] = ctx->picinfo.fb_sz[0] >> 1;
inst->vsi_ctx.dec.cap_num_planes =
ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes;
*pic = ctx->picinfo;
mtk_vcodec_debug(inst, "pic(%d, %d), buf(%d, %d)",
ctx->picinfo.pic_w, ctx->picinfo.pic_h,
ctx->picinfo.buf_w, ctx->picinfo.buf_h);
mtk_vcodec_debug(inst, "Y/C(%d, %d)", ctx->picinfo.fb_sz[0],
ctx->picinfo.fb_sz[1]);
if (ctx->last_decoded_picinfo.pic_w != ctx->picinfo.pic_w ||
ctx->last_decoded_picinfo.pic_h != ctx->picinfo.pic_h) {
inst->vsi_ctx.dec.resolution_changed = true;
if (ctx->last_decoded_picinfo.buf_w != ctx->picinfo.buf_w ||
ctx->last_decoded_picinfo.buf_h != ctx->picinfo.buf_h)
inst->vsi_ctx.dec.realloc_mv_buf = true;
mtk_v4l2_debug(1, "ResChg: (%d %d) : old(%d, %d) -> new(%d, %d)",
inst->vsi_ctx.dec.resolution_changed,
inst->vsi_ctx.dec.realloc_mv_buf,
ctx->last_decoded_picinfo.pic_w,
ctx->last_decoded_picinfo.pic_h,
ctx->picinfo.pic_w, ctx->picinfo.pic_h);
}
}
static void get_crop_info(struct vdec_h264_slice_inst *inst, struct v4l2_rect *cr)
{
cr->left = inst->vsi_ctx.crop.left;
cr->top = inst->vsi_ctx.crop.top;
cr->width = inst->vsi_ctx.crop.width;
cr->height = inst->vsi_ctx.crop.height;
mtk_vcodec_debug(inst, "l=%d, t=%d, w=%d, h=%d",
cr->left, cr->top, cr->width, cr->height);
}
static void get_dpb_size(struct vdec_h264_slice_inst *inst, unsigned int *dpb_sz)
{
*dpb_sz = inst->vsi_ctx.dec.dpb_sz;
mtk_vcodec_debug(inst, "sz=%d", *dpb_sz);
}
static int vdec_h264_slice_init(struct mtk_vcodec_ctx *ctx)
{
struct vdec_h264_slice_inst *inst;
int err;
inst = kzalloc(sizeof(*inst), GFP_KERNEL);
if (!inst)
return -ENOMEM;
inst->ctx = ctx;
inst->vpu.id = SCP_IPI_VDEC_H264;
inst->vpu.ctx = ctx;
err = vpu_dec_init(&inst->vpu);
if (err) {
mtk_vcodec_err(inst, "vdec_h264 init err=%d", err);
goto error_free_inst;
}
memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
inst->vsi_ctx.dec.resolution_changed = true;
inst->vsi_ctx.dec.realloc_mv_buf = true;
err = allocate_predication_buf(inst);
if (err)
goto error_deinit;
mtk_vcodec_debug(inst, "struct size = %d,%d,%d,%d\n",
sizeof(struct mtk_h264_sps_param),
sizeof(struct mtk_h264_pps_param),
sizeof(struct mtk_h264_dec_slice_param),
sizeof(struct mtk_h264_dpb_info));
mtk_vcodec_debug(inst, "H264 Instance >> %p", inst);
ctx->drv_handle = inst;
return 0;
error_deinit:
vpu_dec_deinit(&inst->vpu);
error_free_inst:
kfree(inst);
return err;
}
static void vdec_h264_slice_deinit(void *h_vdec)
{
struct vdec_h264_slice_inst *inst = h_vdec;
mtk_vcodec_debug_enter(inst);
vpu_dec_deinit(&inst->vpu);
free_predication_buf(inst);
free_mv_buf(inst);
kfree(inst);
}
static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
struct vdec_fb *fb, bool *res_chg)
{
struct vdec_h264_slice_inst *inst = h_vdec;
const struct v4l2_ctrl_h264_decode_params *dec_params =
get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
struct vdec_vpu_inst *vpu = &inst->vpu;
u32 data[2];
u64 y_fb_dma;
u64 c_fb_dma;
int err;
/* bs NULL means flush decoder */
if (!bs)
return vpu_dec_reset(vpu);
y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
mtk_vcodec_debug(inst, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
++inst->num_nalu, y_fb_dma, c_fb_dma, fb);
inst->vsi_ctx.dec.bs_dma = (uint64_t)bs->dma_addr;
inst->vsi_ctx.dec.y_fb_dma = y_fb_dma;
inst->vsi_ctx.dec.c_fb_dma = c_fb_dma;
inst->vsi_ctx.dec.vdec_fb_va = (u64)(uintptr_t)fb;
get_vdec_decode_parameters(inst);
data[0] = bs->size;
/*
* Reconstruct the first byte of the NAL unit, as the firmware requests
* that information to be passed even though it is present in the stream
* itself...
*/
data[1] = (dec_params->nal_ref_idc << 5) |
((dec_params->flags & V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC)
? 0x5 : 0x1);
*res_chg = inst->vsi_ctx.dec.resolution_changed;
if (*res_chg) {
mtk_vcodec_debug(inst, "- resolution changed -");
if (inst->vsi_ctx.dec.realloc_mv_buf) {
err = alloc_mv_buf(inst, &inst->ctx->picinfo);
inst->vsi_ctx.dec.realloc_mv_buf = false;
if (err)
goto err_free_fb_out;
}
*res_chg = false;
}
memcpy(inst->vpu.vsi, &inst->vsi_ctx, sizeof(inst->vsi_ctx));
err = vpu_dec_start(vpu, data, 2);
if (err)
goto err_free_fb_out;
/* wait decoder done interrupt */
err = mtk_vcodec_wait_for_done_ctx(inst->ctx,
MTK_INST_IRQ_RECEIVED,
WAIT_INTR_TIMEOUT_MS);
if (err)
goto err_free_fb_out;
vpu_dec_end(vpu);
memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
mtk_vcodec_debug(inst, "\n - NALU[%d]", inst->num_nalu);
return 0;
err_free_fb_out:
mtk_vcodec_err(inst, "\n - NALU[%d] err=%d -\n", inst->num_nalu, err);
return err;
}
static int vdec_h264_slice_get_param(void *h_vdec, enum vdec_get_param_type type, void *out)
{
struct vdec_h264_slice_inst *inst = h_vdec;
switch (type) {
case GET_PARAM_PIC_INFO:
get_pic_info(inst, out);
break;
case GET_PARAM_DPB_SIZE:
get_dpb_size(inst, out);
break;
case GET_PARAM_CROP_INFO:
get_crop_info(inst, out);
break;
default:
mtk_vcodec_err(inst, "invalid get parameter type=%d", type);
return -EINVAL;
}
return 0;
}
const struct vdec_common_if vdec_h264_slice_if = {
.init = vdec_h264_slice_init,
.decode = vdec_h264_slice_decode,
.get_param = vdec_h264_slice_get_param,
.deinit = vdec_h264_slice_deinit,
};

3
drivers/media/platform/mtk-vcodec/vdec_drv_if.c
View File

@ -19,6 +19,9 @@ int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
int ret = 0;
switch (fourcc) {
case V4L2_PIX_FMT_H264_SLICE:
ctx->dec_if = &vdec_h264_slice_if;
break;
case V4L2_PIX_FMT_H264:
ctx->dec_if = &vdec_h264_if;
break;

1
drivers/media/platform/mtk-vcodec/vdec_drv_if.h
View File

@ -55,6 +55,7 @@ struct vdec_fb_node {
};
extern const struct vdec_common_if vdec_h264_if;
extern const struct vdec_common_if vdec_h264_slice_if;
extern const struct vdec_common_if vdec_vp8_if;
extern const struct vdec_common_if vdec_vp9_if;