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-rw-r--r--common/arm/ihevc_resi_trans_neon.c93
-rw-r--r--common/arm/ihevc_resi_trans_neon_32x32.c12
-rw-r--r--common/ihevc_defs.h7
-rw-r--r--common/ihevc_resi_trans.c95
-rw-r--r--common/ihevc_resi_trans.h24
5 files changed, 136 insertions, 95 deletions
diff --git a/common/arm/ihevc_resi_trans_neon.c b/common/arm/ihevc_resi_trans_neon.c
index 280b8e9..bf9c058 100644
--- a/common/arm/ihevc_resi_trans_neon.c
+++ b/common/arm/ihevc_resi_trans_neon.c
@@ -66,10 +66,9 @@ UWORD32 ihevc_resi_trans_4x4_neon(
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
- WORD32 chroma_flag = dst_strd_chr_flag & 1;
- WORD32 dst_strd = dst_strd_chr_flag >> 16;
UWORD32 sad;
uint8x16_t inp_buf, pred_buf;
int16x8_t diff_1, diff_2;
@@ -86,15 +85,15 @@ UWORD32 ihevc_resi_trans_4x4_neon(
uint64x2_t c;
(void)pi4_temp;
- if(chroma_flag == 0)
+ if(e_chroma_plane == NULL_PLANE)
{
inp_buf = load_unaligned_u8q(pu1_src, src_strd);
pred_buf = load_unaligned_u8q(pu1_pred, pred_strd);
}
else
{
- inp_buf = load_unaligned_u8qi(pu1_src, src_strd);
- pred_buf = load_unaligned_u8qi(pu1_pred, pred_strd);
+ inp_buf = load_unaligned_u8qi(pu1_src + e_chroma_plane, src_strd);
+ pred_buf = load_unaligned_u8qi(pu1_pred + e_chroma_plane, pred_strd);
}
abs = vabdl_u8(vget_low_u8(inp_buf), vget_low_u8(pred_buf));
@@ -198,9 +197,11 @@ UWORD32 ihevc_resi_trans_4x4_neon(
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
- * 0 - luma transform, 1 - chroma transform. Not used for 4x4ttyppe1
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns block sad
*
@@ -216,9 +217,9 @@ UWORD32 ihevc_resi_trans_4x4_ttype1_neon(
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
- WORD32 dst_strd;
UWORD32 sad;
int16x4_t src0_4x16b;
int16x4_t src1_4x16b;
@@ -242,7 +243,7 @@ UWORD32 ihevc_resi_trans_4x4_ttype1_neon(
uint16x8_t abs = vabdl_u8(vget_low_u8(src_u8), vget_low_u8(pred_u8));
uint32x4_t b;
uint64x2_t c;
-
+ UNUSED(e_chroma_plane);
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(pred_u8));
b = vpaddlq_u16(abs);
c = vpaddlq_u32(b);
@@ -251,7 +252,6 @@ UWORD32 ihevc_resi_trans_4x4_ttype1_neon(
0);
(void)pi4_temp;
- dst_strd = dst_strd_chr_flag >> 16;
/************************* 4x4 16bit Transpose ***********************/
src0_4x16b = vget_low_s16(src_reg0);
@@ -379,8 +379,11 @@ UWORD32 ihevc_resi_trans_4x4_ttype1_neon(
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -396,7 +399,8 @@ UWORD32 ihevc_resi_trans_8x8_neon(
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
int16x8_t diff_16[8];
int16x8_t abs = vdupq_n_s16(0);
@@ -404,13 +408,11 @@ UWORD32 ihevc_resi_trans_8x8_neon(
int64x2_t tmp_b;
int32x2_t sad_v;
int32x4x2_t a0, a1, a2, a3, a4, a5, a6, a7;
- int chroma_flag = dst_strd_chr_flag & 1;
- int dst_strd = dst_strd_chr_flag >> 16;
UWORD32 sad;
(void)pi4_temp;
-#define RESIDUE(k, is_chroma) \
- if(!is_chroma) \
+#define RESIDUE(k) \
+ if(NULL_PLANE == e_chroma_plane) \
{ \
const uint8x8_t s##k = vld1_u8(pu1_src); \
const uint8x8_t p##k = vld1_u8(pu1_pred); \
@@ -421,8 +423,8 @@ UWORD32 ihevc_resi_trans_8x8_neon(
} \
else \
{ \
- const uint8x8_t s##k = vld2_u8(pu1_src).val[0]; \
- const uint8x8_t p##k = vld2_u8(pu1_pred).val[0]; \
+ const uint8x8_t s##k = vld2_u8(pu1_src).val[e_chroma_plane]; \
+ const uint8x8_t p##k = vld2_u8(pu1_pred).val[e_chroma_plane]; \
diff_16[k] = vreinterpretq_s16_u16(vsubl_u8(s##k, p##k)); \
pu1_src += src_strd; \
pu1_pred += pred_strd; \
@@ -430,14 +432,14 @@ UWORD32 ihevc_resi_trans_8x8_neon(
}
// stage 1
- RESIDUE(0, chroma_flag);
- RESIDUE(1, chroma_flag);
- RESIDUE(2, chroma_flag);
- RESIDUE(3, chroma_flag);
- RESIDUE(4, chroma_flag);
- RESIDUE(5, chroma_flag);
- RESIDUE(6, chroma_flag);
- RESIDUE(7, chroma_flag);
+ RESIDUE(0);
+ RESIDUE(1);
+ RESIDUE(2);
+ RESIDUE(3);
+ RESIDUE(4);
+ RESIDUE(5);
+ RESIDUE(6);
+ RESIDUE(7);
tmp_a = vpaddlq_s16(abs);
tmp_b = vpaddlq_s32(tmp_a);
@@ -792,11 +794,12 @@ UWORD32 ihevc_resi_trans_8x8_neon(
return sad;
}
-static INLINE void load(const uint8_t *a, int stride, uint8x8_t *b, int is_chroma)
+static INLINE void load(const uint8_t *a, int stride, uint8x8_t *b,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
int i;
- if(is_chroma == 0)
+ if(e_chroma_plane == NULL_PLANE)
{
for (i = 0; i < 16; i++)
{
@@ -808,7 +811,7 @@ static INLINE void load(const uint8_t *a, int stride, uint8x8_t *b, int is_chrom
{
for (i = 0; i < 16; i++)
{
- b[i] = vld2_u8(a).val[0];
+ b[i] = vld2_u8(a).val[e_chroma_plane];
a += stride;
}
}
@@ -1261,8 +1264,11 @@ static void dct_body_32_32(int32x4x2_t *in /*[16]*/, int32x4x2_t *out /*[16]*/)
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -1278,12 +1284,11 @@ UWORD32 ihevc_resi_trans_16x16_neon(
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
UWORD32 u4_blk_sad = 0;
WORD32 chroma_flag;
- WORD32 dst_strd;
-
uint8x8_t temp0[16], temp1[16];
int16x8_t temp2[16], temp3[16];
int32x4_t tmp_a, tmp_b;
@@ -1292,21 +1297,19 @@ UWORD32 ihevc_resi_trans_16x16_neon(
int32x4x2_t out0[16], out1[16], temp4[16], temp5[16];
(void)pi4_temp;
- chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
-
+ chroma_flag = e_chroma_plane != NULL_PLANE;
/* Residue + Forward Transform 1st stage */
// Left half.
- load(pu1_src, src_strd, temp0, chroma_flag);
- load(pu1_pred, pred_strd, temp1, chroma_flag);
+ load(pu1_src, src_strd, temp0, e_chroma_plane);
+ load(pu1_pred, pred_strd, temp1, e_chroma_plane);
tmp_a = diff(temp0, temp1, temp2);
cross_input_16(temp2, temp3);
dct_body_16_32(temp3, out0);
// Right half.
- load(pu1_src + 8 * (1 + chroma_flag), src_strd, temp0, chroma_flag);
- load(pu1_pred + 8 * (1 + chroma_flag), pred_strd, temp1, chroma_flag);
+ load(pu1_src + 8 * (1 + chroma_flag), src_strd, temp0, e_chroma_plane);
+ load(pu1_pred + 8 * (1 + chroma_flag), pred_strd, temp1, e_chroma_plane);
tmp_b = diff(temp0, temp1, temp2);
cross_input_16(temp2, temp3);
diff --git a/common/arm/ihevc_resi_trans_neon_32x32.c b/common/arm/ihevc_resi_trans_neon_32x32.c
index 5270f80..67f742c 100644
--- a/common/arm/ihevc_resi_trans_neon_32x32.c
+++ b/common/arm/ihevc_resi_trans_neon_32x32.c
@@ -86,8 +86,11 @@
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -98,18 +101,17 @@
*/
UWORD32 ihevc_resi_trans_32x32_neon(UWORD8 *pu1_src, UWORD8 *pu1_pred,
WORD32 *pi4_temp, WORD16 *pi2_dst, WORD32 src_strd, WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd, CHROMA_PLANE_ID_T e_chroma_plane)
{
int16x8_t diff_16[4][2];
WORD32 i;
int32x2_t sad;
int64x2_t tmp_a;
UWORD32 u4_blk_sad = 0;
- WORD32 dst_strd = dst_strd_chr_flag >> 16;
WORD32 *pi4_temp_orig = pi4_temp;
int16x8_t abs = vdupq_n_s16(0);
int32x4_t sum_val = vdupq_n_s32(0);
-
+ UNUSED(e_chroma_plane);
// Stage 1
for(i = 0; i < 16; i++)
diff --git a/common/ihevc_defs.h b/common/ihevc_defs.h
index 58761eb..faa3704 100644
--- a/common/ihevc_defs.h
+++ b/common/ihevc_defs.h
@@ -133,6 +133,13 @@ enum
CHROMA_FMT_IDC_YUV444_PLANES = 4,
};
+typedef enum
+{
+ NULL_PLANE = -1,
+ U_PLANE = 0,
+ V_PLANE = 1
+} CHROMA_PLANE_ID_T;
+
/* Pred Modes */
/* Do not change enum values */
enum
diff --git a/common/ihevc_resi_trans.c b/common/ihevc_resi_trans.c
index e1537cc..d1c2470 100644
--- a/common/ihevc_resi_trans.c
+++ b/common/ihevc_resi_trans.c
@@ -81,8 +81,11 @@
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
*
* @returns Void
@@ -99,7 +102,8 @@ UWORD32 ihevc_resi_trans_4x4_ttype1(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
WORD32 i, c[4];
WORD32 add, shift;
@@ -107,11 +111,7 @@ UWORD32 ihevc_resi_trans_4x4_ttype1(UWORD8 *pu1_src,
WORD32 *pi4_tmp_orig;
WORD16 *pi2_dst_orig;
UWORD32 u4_blk_sad = 0;
- // WORD32 chroma_flag;
- WORD32 dst_strd;
-
- // chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
+ UNUSED(e_chroma_plane);
pi2_dst_orig = pi2_dst;
pi4_tmp_orig = pi4_temp;
@@ -216,8 +216,11 @@ UWORD32 ihevc_resi_trans_4x4_ttype1(UWORD8 *pu1_src,
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -233,7 +236,8 @@ UWORD32 ihevc_resi_trans_4x4(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
WORD32 i;
WORD32 e[2], o[2];
@@ -242,11 +246,14 @@ UWORD32 ihevc_resi_trans_4x4(UWORD8 *pu1_src,
WORD32 *pi4_tmp_orig;
WORD16 *pi2_dst_orig;
UWORD32 u4_blk_sad=0;
- WORD32 chroma_flag;
- WORD32 dst_strd;
+ WORD32 chroma_flag = 0;
- chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
+ if (e_chroma_plane != NULL_PLANE)
+ {
+ chroma_flag = 1;
+ pu1_src += e_chroma_plane;
+ pu1_pred += e_chroma_plane;
+ }
pi2_dst_orig = pi2_dst;
pi4_tmp_orig = pi4_temp;
@@ -427,8 +434,11 @@ void ihevc_resi_trans_4x4_16bit(WORD16 *pi2_src,
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -444,7 +454,8 @@ UWORD32 ihevc_resi_trans_8x8(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
WORD32 i, k;
WORD32 e[4], o[4];
@@ -455,11 +466,14 @@ UWORD32 ihevc_resi_trans_8x8(UWORD8 *pu1_src,
// WORD16 *pi2_tmp;
WORD16 *pi2_dst_orig;
UWORD32 u4_blk_sad=0;
- WORD32 chroma_flag;
- WORD32 dst_strd;
+ WORD32 chroma_flag = 0;
- chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
+ if (e_chroma_plane != NULL_PLANE)
+ {
+ chroma_flag = 1;
+ pu1_src += e_chroma_plane;
+ pu1_pred += e_chroma_plane;
+ }
pi2_dst_orig = pi2_dst;
pi4_tmp_orig = pi4_temp;
@@ -724,8 +738,11 @@ void ihevc_resi_trans_8x8_16bit(WORD16 *pi2_src,
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -741,7 +758,8 @@ UWORD32 ihevc_resi_trans_16x16(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
WORD32 i, k;
WORD32 e[8], o[8];
@@ -752,11 +770,14 @@ UWORD32 ihevc_resi_trans_16x16(UWORD8 *pu1_src,
WORD32 *pi4_tmp_orig;
WORD16 *pi2_dst_orig;
UWORD32 u4_blk_sad = 0;
- WORD32 chroma_flag;
- WORD32 dst_strd;
+ WORD32 chroma_flag = 0;
- chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
+ if (e_chroma_plane != NULL_PLANE)
+ {
+ chroma_flag = 1;
+ pu1_src += e_chroma_plane;
+ pu1_pred += e_chroma_plane;
+ }
pi2_dst_orig = pi2_dst;
pi4_tmp_orig = pi4_temp;
@@ -1056,8 +1077,11 @@ void ihevc_resi_trans_16x16_16bit(WORD16 *pi2_src,
* @param[in] pred_strd
* Prediction Stride
*
- * @param[in] dst_strd_chr_flag
- * Output Stride and Chroma Flag packed in the MS and LS 16-bit
+ * @param[in] dst_strd
+ * Output Stride
+ *
+ * @param[in] e_chroma_plane
+ * Enum singalling chroma plane
*
* @returns Void
*
@@ -1073,7 +1097,8 @@ UWORD32 ihevc_resi_trans_32x32(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag)
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane)
{
WORD32 i, k;
WORD32 e[16], o[16];
@@ -1085,11 +1110,7 @@ UWORD32 ihevc_resi_trans_32x32(UWORD8 *pu1_src,
WORD32 *pi4_tmp_orig;
WORD16 *pi2_dst_orig;
UWORD32 u4_blk_sad = 0 ;
- WORD32 chroma_flag;
- WORD32 dst_strd;
-
- chroma_flag = dst_strd_chr_flag & 1;
- dst_strd = dst_strd_chr_flag >> 16;
+ UNUSED(e_chroma_plane);
pi2_dst_orig = pi2_dst;
pi4_tmp_orig = pi4_temp;
diff --git a/common/ihevc_resi_trans.h b/common/ihevc_resi_trans.h
index 3ca184b..9c40fa1 100644
--- a/common/ihevc_resi_trans.h
+++ b/common/ihevc_resi_trans.h
@@ -42,7 +42,8 @@ typedef UWORD32 ihevc_resi_trans_4x4_ttype1_ft(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag);
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane);
typedef UWORD32 ihevc_hbd_resi_trans_4x4_ttype1_ft(UWORD16 *pu2_src,
UWORD16 *pu2_pred,
@@ -50,7 +51,8 @@ typedef UWORD32 ihevc_hbd_resi_trans_4x4_ttype1_ft(UWORD16 *pu2_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag,
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane,
UWORD8 bit_depth);
typedef UWORD32 ihevc_resi_trans_4x4_ft(UWORD8 *pu1_src,
@@ -59,7 +61,8 @@ typedef UWORD32 ihevc_resi_trans_4x4_ft(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag);
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane);
typedef UWORD32 ihevc_hbd_resi_trans_4x4_ft
(
@@ -79,7 +82,8 @@ typedef UWORD32 ihevc_resi_trans_8x8_ft(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag);
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane);
typedef UWORD32 ihevc_hbd_resi_trans_8x8_ft
(
@@ -100,7 +104,8 @@ typedef UWORD32 ihevc_resi_trans_16x16_ft(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag);
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane);
typedef UWORD32 ihevc_hbd_resi_trans_16x16_ft(UWORD16 *pu2_src,
UWORD16 *pu2_pred,
@@ -108,7 +113,8 @@ typedef UWORD32 ihevc_hbd_resi_trans_16x16_ft(UWORD16 *pu2_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag,
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane,
UWORD8 bit_depth);
typedef UWORD32 ihevc_resi_trans_32x32_ft(UWORD8 *pu1_src,
@@ -117,7 +123,8 @@ typedef UWORD32 ihevc_resi_trans_32x32_ft(UWORD8 *pu1_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag);
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane);
typedef UWORD32 ihevc_hbd_resi_trans_32x32_ft(UWORD16 *pu2_src,
UWORD16 *pu2_pred,
@@ -125,7 +132,8 @@ typedef UWORD32 ihevc_hbd_resi_trans_32x32_ft(UWORD16 *pu2_src,
WORD16 *pi2_dst,
WORD32 src_strd,
WORD32 pred_strd,
- WORD32 dst_strd_chr_flag,
+ WORD32 dst_strd,
+ CHROMA_PLANE_ID_T e_chroma_plane,
UWORD8 bit_depth);
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-14 10:18:16 +0000