50 #define W1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 51 #define W2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 52 #define W3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 53 #define W4 16383 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 54 #define W5 12873 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 55 #define W6 8867 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 56 #define W7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 62 #define MUL(a, b) MUL16(a, b) 63 #define MAC(a, b, c) MAC16(a, b, c) 65 #elif BIT_DEPTH == 10 || BIT_DEPTH == 12 68 #define W1 22725 // 90901 69 #define W2 21407 // 85627 70 #define W3 19265 // 77062 71 #define W4 16384 // 65535 72 #define W5 12873 // 51491 73 #define W6 8867 // 35468 74 #define W7 4520 // 18081 80 # elif IN_IDCT_DEPTH == 32 104 #define MUL(a, b) ((int)((SUINT)(a) * (b))) 105 #define MAC(a, b, c) ((a) += (SUINT)(b) * (c)) 109 #error "Unsupported bitdepth" 114 static inline void FUNC(idctRowCondDC_extrashift)(int16_t *row,
int extra_shift)
122 #if IN_IDCT_DEPTH == 16 124 #define ROW0_MASK (0xffffULL << 48 * HAVE_BIGENDIAN) 128 temp = (row[0] * (1 << (
DC_SHIFT - extra_shift))) & 0xffff;
130 temp = ((row[0] + (1<<(extra_shift -
DC_SHIFT-1))) >> (extra_shift -
DC_SHIFT)) & 0xffff;
132 temp += temp * (1 << 16);
133 temp += temp * ((uint64_t) 1 << 32);
145 temp = (row[0] * (1 << (
DC_SHIFT - extra_shift))) & 0xffff;
147 temp = ((row[0] + (1<<(extra_shift -
DC_SHIFT-1))) >> (extra_shift -
DC_SHIFT)) & 0xffff;
149 temp += temp * (1 << 16);
169 b0 =
MUL(
W1, row[1]);
171 b1 =
MUL(
W3, row[1]);
172 MAC(b1, -
W7, row[3]);
173 b2 =
MUL(
W5, row[1]);
174 MAC(b2, -
W1, row[3]);
175 b3 =
MUL(
W7, row[1]);
176 MAC(b3, -
W5, row[3]);
178 #if IN_IDCT_DEPTH == 32 191 MAC(b1, -
W1, row[5]);
192 MAC(b1, -
W5, row[7]);
198 MAC(b3, -
W1, row[7]);
211 #define IDCT_COLS do { \ 212 a0 = (SUINT)W4 * (col[8*0] + ((1<<(COL_SHIFT-1))/W4)); \ 217 a0 += (SUINT) W2*col[8*2]; \ 218 a1 += (SUINT) W6*col[8*2]; \ 219 a2 += (SUINT)-W6*col[8*2]; \ 220 a3 += (SUINT)-W2*col[8*2]; \ 222 b0 = MUL(W1, col[8*1]); \ 223 b1 = MUL(W3, col[8*1]); \ 224 b2 = MUL(W5, col[8*1]); \ 225 b3 = MUL(W7, col[8*1]); \ 227 MAC(b0, W3, col[8*3]); \ 228 MAC(b1, -W7, col[8*3]); \ 229 MAC(b2, -W1, col[8*3]); \ 230 MAC(b3, -W5, col[8*3]); \ 233 a0 += (SUINT) W4*col[8*4]; \ 234 a1 += (SUINT)-W4*col[8*4]; \ 235 a2 += (SUINT)-W4*col[8*4]; \ 236 a3 += (SUINT) W4*col[8*4]; \ 240 MAC(b0, W5, col[8*5]); \ 241 MAC(b1, -W1, col[8*5]); \ 242 MAC(b2, W7, col[8*5]); \ 243 MAC(b3, W3, col[8*5]); \ 247 a0 += (SUINT) W6*col[8*6]; \ 248 a1 += (SUINT)-W2*col[8*6]; \ 249 a2 += (SUINT) W2*col[8*6]; \ 250 a3 += (SUINT)-W6*col[8*6]; \ 254 MAC(b0, W7, col[8*7]); \ 255 MAC(b1, -W5, col[8*7]); \ 256 MAC(b2, W3, col[8*7]); \ 257 MAC(b3, -W1, col[8*7]); \ 262 static inline void FUNC(idctSparseCol_extrashift)(int16_t *col)
336 line_size /=
sizeof(
pixel);
338 for (i = 0; i < 8; i++)
341 for (i = 0; i < 8; i++)
345 #if IN_IDCT_DEPTH == 16 346 void FUNC6(ff_simple_idct_add)(
uint8_t *dest_, ptrdiff_t line_size, int16_t *
block)
351 line_size /=
sizeof(
pixel);
353 for (i = 0; i < 8; i++)
356 for (i = 0; i < 8; i++)
364 for (i = 0; i < 8; i++)
367 for (i = 0; i < 8; i++)
void FUNC6() ff_simple_idct_put(uint8_t *dest_, ptrdiff_t line_size, int16_t *block_)
static void FUNC6() idctRowCondDC(idctin *row, int extra_shift)
static void FUNC6() idctSparseCol(idctin *col)
The exact code depends on how similar the blocks are and how related they are to the block
static void FUNC6() idctSparseColAdd(pixel *dest, ptrdiff_t line_size, idctin *col)
static double b0(void *priv, double x, double y)
static double b1(void *priv, double x, double y)
static double b3(void *priv, double x, double y)
static void FUNC6() idctSparseColPut(pixel *dest, ptrdiff_t line_size, idctin *col)
static double b2(void *priv, double x, double y)