/*
 * Half-pel DSP functions
 *
 * Copyright (c) 2000, 2001 Fabrice Bellard
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
 *
 * gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * Half-pel DSP functions
 */

#include "pixels.h"

#include "bit_depth_template.c"

#include "hpel_template.c"
#include "tpel_template.c"

#define PIXOP2(OPNAME, OP)                                              \
static inline void FUNC(OPNAME ## _no_rnd_pixels8_l2)(uint8_t *dst,     \
                                                      const uint8_t *src1, \
                                                      const uint8_t *src2, \
                                                      int dst_stride,   \
                                                      int src_stride1,  \
                                                      int src_stride2,  \
                                                      int h)            \
{                                                                       \
    int i;                                                              \
                                                                        \
    for (i = 0; i < h; i++) {                                           \
        pixel4 a, b;                                                    \
        a = AV_RN4P(&src1[i * src_stride1]);                            \
        b = AV_RN4P(&src2[i * src_stride2]);                            \
        OP(*((pixel4 *) &dst[i * dst_stride]),                          \
           no_rnd_avg_pixel4(a, b));                                    \
        a = AV_RN4P(&src1[i * src_stride1 + 4 * sizeof(pixel)]);        \
        b = AV_RN4P(&src2[i * src_stride2 + 4 * sizeof(pixel)]);        \
        OP(*((pixel4 *) &dst[i * dst_stride + 4 * sizeof(pixel)]),      \
           no_rnd_avg_pixel4(a, b));                                    \
    }                                                                   \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _no_rnd_pixels8_x2)(uint8_t *block,  \
                                                       const uint8_t *pixels, \
                                                       ptrdiff_t line_size, \
                                                       int h)           \
{                                                                       \
    FUNC(OPNAME ## _no_rnd_pixels8_l2)(block, pixels, pixels + sizeof(pixel), \
                                       line_size, line_size, line_size, h); \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels8_x2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels8_l2)(block, pixels, pixels + sizeof(pixel),  \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _no_rnd_pixels8_y2)(uint8_t *block,  \
                                                       const uint8_t *pixels, \
                                                       ptrdiff_t line_size, \
                                                       int h)           \
{                                                                       \
    FUNC(OPNAME ## _no_rnd_pixels8_l2)(block, pixels, pixels + line_size, \
                                       line_size, line_size, line_size, h); \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels8_y2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels8_l2)(block, pixels, pixels + line_size,      \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels4_x2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels4_l2)(block, pixels, pixels + sizeof(pixel),  \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels4_y2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels4_l2)(block, pixels, pixels + line_size,      \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels2_x2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels2_l2)(block, pixels, pixels + sizeof(pixel),  \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels2_y2)(uint8_t *block,         \
                                                const uint8_t *pixels,  \
                                                ptrdiff_t line_size,    \
                                                int h)                  \
{                                                                       \
    FUNC(OPNAME ## _pixels2_l2)(block, pixels, pixels + line_size,      \
                                line_size, line_size, line_size, h);    \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels2_xy2)(uint8_t *_block,       \
                                                 const uint8_t *_pixels, \
                                                 ptrdiff_t line_size,   \
                                                 int h)                 \
{                                                                       \
    pixel *block        = (pixel *) _block;                             \
    const pixel *pixels = (const pixel *) _pixels;                      \
    int i, a1, b1;                                                      \
    int a0 = pixels[0];                                                 \
    int b0 = pixels[1] + 2;                                             \
                                                                        \
    a0 += b0;                                                           \
    b0 += pixels[2];                                                    \
    line_size >>= sizeof(pixel)-1;                                      \
    pixels += line_size;                                                \
    for (i = 0; i < h; i += 2) {                                        \
        a1  = pixels[0];                                                \
        b1  = pixels[1];                                                \
        a1 += b1;                                                       \
        b1 += pixels[2];                                                \
                                                                        \
        block[0] = (a1 + a0) >> 2; /* FIXME non put */                  \
        block[1] = (b1 + b0) >> 2;                                      \
                                                                        \
        pixels += line_size;                                            \
        block  += line_size;                                            \
                                                                        \
        a0  = pixels[0];                                                \
        b0  = pixels[1] + 2;                                            \
        a0 += b0;                                                       \
        b0 += pixels[2];                                                \
                                                                        \
        block[0] = (a1 + a0) >> 2;                                      \
        block[1] = (b1 + b0) >> 2;                                      \
        pixels  += line_size;                                           \
        block   += line_size;                                           \
    }                                                                   \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels4_xy2)(uint8_t *block,        \
                                                 const uint8_t *pixels, \
                                                 ptrdiff_t line_size,   \
                                                 int h)                 \
{                                                                       \
    /* FIXME HIGH BIT DEPTH */                                          \
    int i;                                                              \
    const uint32_t a = AV_RN32(pixels);                                 \
    const uint32_t b = AV_RN32(pixels + 1);                             \
    uint32_t l0 = (a & 0x03030303UL) +                                  \
                  (b & 0x03030303UL) +                                  \
                       0x02020202UL;                                    \
    uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) +                           \
                  ((b & 0xFCFCFCFCUL) >> 2);                            \
    uint32_t l1, h1;                                                    \
                                                                        \
    pixels += line_size;                                                \
    for (i = 0; i < h; i += 2) {                                        \
        uint32_t a = AV_RN32(pixels);                                   \
        uint32_t b = AV_RN32(pixels + 1);                               \
        l1 = (a & 0x03030303UL) +                                       \
             (b & 0x03030303UL);                                        \
        h1 = ((a & 0xFCFCFCFCUL) >> 2) +                                \
             ((b & 0xFCFCFCFCUL) >> 2);                                 \
        OP(*((uint32_t *) block), h0 + h1 +                             \
           (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                          \
        pixels += line_size;                                            \
        block  += line_size;                                            \
        a  = AV_RN32(pixels);                                           \
        b  = AV_RN32(pixels + 1);                                       \
        l0 = (a & 0x03030303UL) +                                       \
             (b & 0x03030303UL) +                                       \
                  0x02020202UL;                                         \
        h0 = ((a & 0xFCFCFCFCUL) >> 2) +                                \
             ((b & 0xFCFCFCFCUL) >> 2);                                 \
        OP(*((uint32_t *) block), h0 + h1 +                             \
           (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                          \
        pixels += line_size;                                            \
        block  += line_size;                                            \
    }                                                                   \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _pixels8_xy2)(uint8_t *block,        \
                                                 const uint8_t *pixels, \
                                                 ptrdiff_t line_size,   \
                                                 int h)                 \
{                                                                       \
    /* FIXME HIGH BIT DEPTH */                                          \
    int j;                                                              \
                                                                        \
    for (j = 0; j < 2; j++) {                                           \
        int i;                                                          \
        const uint32_t a = AV_RN32(pixels);                             \
        const uint32_t b = AV_RN32(pixels + 1);                         \
        uint32_t l0 = (a & 0x03030303UL) +                              \
                      (b & 0x03030303UL) +                              \
                           0x02020202UL;                                \
        uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) +                       \
                      ((b & 0xFCFCFCFCUL) >> 2);                        \
        uint32_t l1, h1;                                                \
                                                                        \
        pixels += line_size;                                            \
        for (i = 0; i < h; i += 2) {                                    \
            uint32_t a = AV_RN32(pixels);                               \
            uint32_t b = AV_RN32(pixels + 1);                           \
            l1 = (a & 0x03030303UL) +                                   \
                 (b & 0x03030303UL);                                    \
            h1 = ((a & 0xFCFCFCFCUL) >> 2) +                            \
                 ((b & 0xFCFCFCFCUL) >> 2);                             \
            OP(*((uint32_t *) block), h0 + h1 +                         \
               (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                      \
            pixels += line_size;                                        \
            block  += line_size;                                        \
            a  = AV_RN32(pixels);                                       \
            b  = AV_RN32(pixels + 1);                                   \
            l0 = (a & 0x03030303UL) +                                   \
                 (b & 0x03030303UL) +                                   \
                      0x02020202UL;                                     \
            h0 = ((a & 0xFCFCFCFCUL) >> 2) +                            \
                 ((b & 0xFCFCFCFCUL) >> 2);                             \
            OP(*((uint32_t *) block), h0 + h1 +                         \
               (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                      \
            pixels += line_size;                                        \
            block  += line_size;                                        \
        }                                                               \
        pixels += 4 - line_size * (h + 1);                              \
        block  += 4 - line_size * h;                                    \
    }                                                                   \
}                                                                       \
                                                                        \
static inline void FUNCC(OPNAME ## _no_rnd_pixels8_xy2)(uint8_t *block, \
                                                        const uint8_t *pixels, \
                                                        ptrdiff_t line_size, \
                                                        int h)          \
{                                                                       \
    /* FIXME HIGH BIT DEPTH */                                          \
    int j;                                                              \
                                                                        \
    for (j = 0; j < 2; j++) {                                           \
        int i;                                                          \
        const uint32_t a = AV_RN32(pixels);                             \
        const uint32_t b = AV_RN32(pixels + 1);                         \
        uint32_t l0 = (a & 0x03030303UL) +                              \
                      (b & 0x03030303UL) +                              \
                           0x01010101UL;                                \
        uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) +                       \
                      ((b & 0xFCFCFCFCUL) >> 2);                        \
        uint32_t l1, h1;                                                \
                                                                        \
        pixels += line_size;                                            \
        for (i = 0; i < h; i += 2) {                                    \
            uint32_t a = AV_RN32(pixels);                               \
            uint32_t b = AV_RN32(pixels + 1);                           \
            l1 = (a & 0x03030303UL) +                                   \
                 (b & 0x03030303UL);                                    \
            h1 = ((a & 0xFCFCFCFCUL) >> 2) +                            \
                 ((b & 0xFCFCFCFCUL) >> 2);                             \
            OP(*((uint32_t *) block), h0 + h1 +                         \
               (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                      \
            pixels += line_size;                                        \
            block  += line_size;                                        \
            a  = AV_RN32(pixels);                                       \
            b  = AV_RN32(pixels + 1);                                   \
            l0 = (a & 0x03030303UL) +                                   \
                 (b & 0x03030303UL) +                                   \
                      0x01010101UL;                                     \
            h0 = ((a & 0xFCFCFCFCUL) >> 2) +                            \
                 ((b & 0xFCFCFCFCUL) >> 2);                             \
            OP(*((uint32_t *) block), h0 + h1 +                         \
               (((l0 + l1) >> 2) & 0x0F0F0F0FUL));                      \
            pixels += line_size;                                        \
            block  += line_size;                                        \
        }                                                               \
        pixels += 4 - line_size * (h + 1);                              \
        block  += 4 - line_size * h;                                    \
    }                                                                   \
}                                                                       \
                                                                        \
CALL_2X_PIXELS(FUNCC(OPNAME ## _pixels16_x2),                           \
               FUNCC(OPNAME ## _pixels8_x2),                            \
               8 * sizeof(pixel))                                       \
CALL_2X_PIXELS(FUNCC(OPNAME ## _pixels16_y2),                           \
               FUNCC(OPNAME ## _pixels8_y2),                            \
               8 * sizeof(pixel))                                       \
CALL_2X_PIXELS(FUNCC(OPNAME ## _pixels16_xy2),                          \
               FUNCC(OPNAME ## _pixels8_xy2),                           \
               8 * sizeof(pixel))                                       \
av_unused CALL_2X_PIXELS(FUNCC(OPNAME ## _no_rnd_pixels16),             \
                         FUNCC(OPNAME ## _pixels8),                     \
                         8 * sizeof(pixel))                             \
CALL_2X_PIXELS(FUNCC(OPNAME ## _no_rnd_pixels16_x2),                    \
               FUNCC(OPNAME ## _no_rnd_pixels8_x2),                     \
               8 * sizeof(pixel))                                       \
CALL_2X_PIXELS(FUNCC(OPNAME ## _no_rnd_pixels16_y2),                    \
               FUNCC(OPNAME ## _no_rnd_pixels8_y2),                     \
               8 * sizeof(pixel))                                       \
CALL_2X_PIXELS(FUNCC(OPNAME ## _no_rnd_pixels16_xy2),                   \
               FUNCC(OPNAME ## _no_rnd_pixels8_xy2),                    \
               8 * sizeof(pixel))                                       \

#define op_avg(a, b) a = rnd_avg_pixel4(a, b)
#define op_put(a, b) a = b
#if BIT_DEPTH == 8
#define put_no_rnd_pixels8_8_c put_pixels8_8_c
PIXOP2(avg, op_avg)
PIXOP2(put, op_put)
#endif
#undef op_avg
#undef op_put