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Merged
harishdm merged 3 commits into from
Feb 13, 2026
Merged

444 #63

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52f3951
hevcdec: add 32x32 chroma inverse trans recon functions
rakeshnitb Feb 13, 2026
240ce7b
hevcdec: add intra pred chroma reference samples filtering functions
rakeshnitb Feb 13, 2026
0f58b25
hevcdec: update context tables for frext profile - 1
rakeshnitb Feb 13, 2026
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2 changes: 2 additions & 0 deletions Android.bp
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@ cc_library_static {
"common/ihevc_chroma_iquant_itrans_recon.c",
"common/ihevc_chroma_iquant_recon.c",
"common/ihevc_chroma_itrans_recon.c",
"common/ihevc_chroma_itrans_recon_32x32.c",
"common/ihevc_chroma_itrans_recon_16x16.c",
"common/ihevc_chroma_itrans_recon_8x8.c",
"common/ihevc_chroma_recon.c",
Expand Down Expand Up @@ -461,6 +462,7 @@ cc_library_static {
"common/ihevc_cabac_tables.c",
"common/ihevc_chroma_intra_pred_filters.c",
"common/ihevc_chroma_itrans_recon.c",
"common/ihevc_chroma_itrans_recon_32x32.c",
"common/ihevc_chroma_itrans_recon_16x16.c",
"common/ihevc_chroma_itrans_recon_8x8.c",
"common/ihevc_common_tables.c",
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1 change: 1 addition & 0 deletions common/common.cmake
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Expand Up @@ -29,6 +29,7 @@ list(
"${HEVC_ROOT}/common/ihevc_chroma_iquant_itrans_recon.c"
"${HEVC_ROOT}/common/ihevc_chroma_recon.c"
"${HEVC_ROOT}/common/ihevc_chroma_itrans_recon_16x16.c"
"${HEVC_ROOT}/common/ihevc_chroma_itrans_recon_32x32.c"
"${HEVC_ROOT}/common/ihevc_chroma_itrans_recon_8x8.c"
"${HEVC_ROOT}/common/ihevc_buf_mgr.c"
"${HEVC_ROOT}/common/ihevc_disp_mgr.c"
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1,250 changes: 626 additions & 624 deletions common/ihevc_cabac_tables.c
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2 changes: 1 addition & 1 deletion common/ihevc_cabac_tables.h
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Expand Up @@ -92,7 +92,7 @@ typedef enum
IHEVC_CAB_COEFFY_PREFIX = IHEVC_CAB_COEFFX_PREFIX + 18,
IHEVC_CAB_CODED_SUBLK_IDX = IHEVC_CAB_COEFFY_PREFIX + 18,
IHEVC_CAB_COEFF_FLAG = IHEVC_CAB_CODED_SUBLK_IDX + 4,
IHEVC_CAB_COEFABS_GRTR1_FLAG = IHEVC_CAB_COEFF_FLAG + 42,
IHEVC_CAB_COEFABS_GRTR1_FLAG = IHEVC_CAB_COEFF_FLAG + 44,
IHEVC_CAB_COEFABS_GRTR2_FLAG = IHEVC_CAB_COEFABS_GRTR1_FLAG + 24,
IHEVC_CAB_CTXT_END = IHEVC_CAB_COEFABS_GRTR2_FLAG + 6
}IHEVC_CABAC_CTXT_OFFSETS;
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7 changes: 7 additions & 0 deletions common/ihevc_chroma_intra_pred.h
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Expand Up @@ -128,6 +128,12 @@ typedef void ihevc_intra_pred_chroma_ref_substitution_ft(UWORD8 *pu1_top_left,
UWORD8 *pu1_dst,
WORD32 dst_strd);

typedef void ihevc_intra_pred_chroma_ref_filtering_ft(UWORD8 *pu1_src,
WORD32 nt,
UWORD8 *pu1_dst,
WORD32 mode,
WORD32 intra_smoothing_flags);

typedef void ihevc_hbd_intra_pred_chroma_planar_ft(
UWORD16 *pu2_ref,
WORD32 src_strd,
Expand Down Expand Up @@ -240,6 +246,7 @@ ihevc_intra_pred_chroma_mode_11_to_17_ft ihevc_intra_pred_chroma_mode_11_to_17;
ihevc_intra_pred_chroma_mode_19_to_25_ft ihevc_intra_pred_chroma_mode_19_to_25;
ihevc_intra_pred_chroma_mode_27_to_33_ft ihevc_intra_pred_chroma_mode_27_to_33;
ihevc_intra_pred_chroma_ref_substitution_ft ihevc_intra_pred_chroma_ref_substitution;
ihevc_intra_pred_chroma_ref_filtering_ft ihevc_intra_pred_chroma_ref_filtering;

ihevc_hbd_intra_pred_chroma_planar_ft ihevc_hbd_intra_pred_chroma_planar;
ihevc_hbd_intra_pred_chroma_dc_ft ihevc_hbd_intra_pred_chroma_dc;
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93 changes: 93 additions & 0 deletions common/ihevc_chroma_intra_pred_filters.c
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Expand Up @@ -416,6 +416,99 @@ void ihevc_intra_pred_chroma_ref_substitution(UWORD8 *pu1_top_left,
}


/**
*******************************************************************************
*
* @brief
* Intra prediction interpolation filter for chroma ref_filtering (4:4:4)
*
*
* @par Description:
* Reference DC filtering for neighboring chroma samples dependent on TU size and
* mode Refer to section 8.4.4.2.3 in the standard
*
* @param[in] pu1_src
* UWORD8 pointer to the source
*
* @param[out] pu1_dst
* UWORD8 pointer to the destination
*
* @param[in] nt
* integer Transform Block size
*
* @param[in] mode
* integer intraprediction mode
*
* @param[in] strong_intra_smoothing_enable_flag
* integer containing intra_smoothing_disabled_flag and strong_smoothing_enable_flag
*
* @returns
*
* @remarks
* None
*
*******************************************************************************
*/

void ihevc_intra_pred_chroma_ref_filtering(UWORD8 *pu1_src,
WORD32 nt,
UWORD8 *pu1_dst,
WORD32 mode,
WORD32 intra_smoothing_flag)
{
WORD32 filter_flag;
WORD32 i; /* Generic indexing variable */
WORD32 four_nt = 4 * nt;
UWORD8 au1_flt[((4 * MAX_CU_SIZE) + 1) * 2];
WORD32 intra_smoothing_disabled_flag = (intra_smoothing_flag >> 3) & 0x1;
WORD32 strong_intra_smoothing_enable_flag = intra_smoothing_flag & 0x1;
UNUSED(strong_intra_smoothing_enable_flag);

if(intra_smoothing_disabled_flag)
{
if(pu1_src == pu1_dst) return;
for(i = 0; i < (2 * (four_nt + 1)); i += 2)
{
pu1_dst[i] = pu1_src[i];
pu1_dst[i + 1] = pu1_src[i + 1];
}
return;
}

filter_flag = gau1_intra_pred_ref_filter[mode] & (1 << (CTZ(nt) - 2));
if(0 == filter_flag)
{
if(pu1_src == pu1_dst) return;
for(i = 0; i < (2 * (four_nt + 1)); i += 2)
{
pu1_dst[i] = pu1_src[i];
pu1_dst[i + 1] = pu1_src[i + 1];
}
}
else
{
/* Extremities Untouched*/
au1_flt[0] = pu1_src[0];
au1_flt[1] = pu1_src[1];
au1_flt[four_nt * 2] = pu1_src[four_nt * 2];
au1_flt[(four_nt * 2) + 1] = pu1_src[(four_nt * 2) + 1];

for(i = 2; i < four_nt * 2; i += 2)
{
au1_flt[i] = (pu1_src[i - 2] + 2 * pu1_src[i] + pu1_src[i + 2] + 2) >> 2;
au1_flt[i + 1] = (pu1_src[i - 1] + 2 * pu1_src[i + 1] + pu1_src[i + 3] + 2) >> 2;
}

for(i = 0; i < (2 * (four_nt + 1)); i += 2)
{
pu1_dst[i] = au1_flt[i];
pu1_dst[i + 1] = au1_flt[i + 1];
}
}
}



/**
*******************************************************************************
*
Expand Down
10 changes: 10 additions & 0 deletions common/ihevc_chroma_itrans_recon.h
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Expand Up @@ -94,13 +94,23 @@ typedef void ihevc_hbd_chroma_itrans_recon_16x16_ft(WORD16 *pi2_src,
WORD32 zero_cols,
WORD32 zero_rows,
UWORD8 bit_depth);
typedef void ihevc_chroma_itrans_recon_32x32_ft(WORD16 *pi2_src,
WORD16 *pi2_tmp,
UWORD8 *pu1_pred,
UWORD8 *pu1_dst,
WORD32 src_strd,
WORD32 pred_strd,
WORD32 dst_strd,
WORD32 zero_cols,
WORD32 zero_rows);

ihevc_chroma_itrans_recon_4x4_ft ihevc_chroma_itrans_recon_4x4;
ihevc_hbd_chroma_itrans_recon_4x4_ft ihevc_hbd_chroma_itrans_recon_4x4;
ihevc_chroma_itrans_recon_8x8_ft ihevc_chroma_itrans_recon_8x8;
ihevc_hbd_chroma_itrans_recon_8x8_ft ihevc_hbd_chroma_itrans_recon_8x8;
ihevc_chroma_itrans_recon_16x16_ft ihevc_chroma_itrans_recon_16x16;
ihevc_hbd_chroma_itrans_recon_16x16_ft ihevc_hbd_chroma_itrans_recon_16x16;
ihevc_chroma_itrans_recon_32x32_ft ihevc_chroma_itrans_recon_32x32;

/* A9 Q Function Declarations */
ihevc_chroma_itrans_recon_4x4_ft ihevc_chroma_itrans_recon_4x4_a9q;
Expand Down
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