-#define BF1(a, b, c, d)\
-{\
- BF(a, b, COS4_0, 1);\
- BF(c, d,-COS4_0, 1);\
- tab[c] += tab[d];\
-}
-
-#define BF2(a, b, c, d)\
-{\
- BF(a, b, COS4_0, 1);\
- BF(c, d,-COS4_0, 1);\
- tab[c] += tab[d];\
- tab[a] += tab[c];\
- tab[c] += tab[b];\
- tab[b] += tab[d];\
-}
-
-#define ADD(a, b) tab[a] += tab[b]
-
-/* DCT32 without 1/sqrt(2) coef zero scaling. */
-static void dct32(int32_t *out, int32_t *tab)
-{
- int tmp0, tmp1;
-
- /* pass 1 */
- BF( 0, 31, COS0_0 , 1);
- BF(15, 16, COS0_15, 5);
- /* pass 2 */
- BF( 0, 15, COS1_0 , 1);
- BF(16, 31,-COS1_0 , 1);
- /* pass 1 */
- BF( 7, 24, COS0_7 , 1);
- BF( 8, 23, COS0_8 , 1);
- /* pass 2 */
- BF( 7, 8, COS1_7 , 4);
- BF(23, 24,-COS1_7 , 4);
- /* pass 3 */
- BF( 0, 7, COS2_0 , 1);
- BF( 8, 15,-COS2_0 , 1);
- BF(16, 23, COS2_0 , 1);
- BF(24, 31,-COS2_0 , 1);
- /* pass 1 */
- BF( 3, 28, COS0_3 , 1);
- BF(12, 19, COS0_12, 2);
- /* pass 2 */
- BF( 3, 12, COS1_3 , 1);
- BF(19, 28,-COS1_3 , 1);
- /* pass 1 */
- BF( 4, 27, COS0_4 , 1);
- BF(11, 20, COS0_11, 2);
- /* pass 2 */
- BF( 4, 11, COS1_4 , 1);
- BF(20, 27,-COS1_4 , 1);
- /* pass 3 */
- BF( 3, 4, COS2_3 , 3);
- BF(11, 12,-COS2_3 , 3);
- BF(19, 20, COS2_3 , 3);
- BF(27, 28,-COS2_3 , 3);
- /* pass 4 */
- BF( 0, 3, COS3_0 , 1);
- BF( 4, 7,-COS3_0 , 1);
- BF( 8, 11, COS3_0 , 1);
- BF(12, 15,-COS3_0 , 1);
- BF(16, 19, COS3_0 , 1);
- BF(20, 23,-COS3_0 , 1);
- BF(24, 27, COS3_0 , 1);
- BF(28, 31,-COS3_0 , 1);
-
-
-
- /* pass 1 */
- BF( 1, 30, COS0_1 , 1);
- BF(14, 17, COS0_14, 3);
- /* pass 2 */
- BF( 1, 14, COS1_1 , 1);
- BF(17, 30,-COS1_1 , 1);
- /* pass 1 */
- BF( 6, 25, COS0_6 , 1);
- BF( 9, 22, COS0_9 , 1);
- /* pass 2 */
- BF( 6, 9, COS1_6 , 2);
- BF(22, 25,-COS1_6 , 2);
- /* pass 3 */
- BF( 1, 6, COS2_1 , 1);
- BF( 9, 14,-COS2_1 , 1);
- BF(17, 22, COS2_1 , 1);
- BF(25, 30,-COS2_1 , 1);
-
- /* pass 1 */
- BF( 2, 29, COS0_2 , 1);
- BF(13, 18, COS0_13, 3);
- /* pass 2 */
- BF( 2, 13, COS1_2 , 1);
- BF(18, 29,-COS1_2 , 1);
- /* pass 1 */
- BF( 5, 26, COS0_5 , 1);
- BF(10, 21, COS0_10, 1);
- /* pass 2 */
- BF( 5, 10, COS1_5 , 2);
- BF(21, 26,-COS1_5 , 2);
- /* pass 3 */
- BF( 2, 5, COS2_2 , 1);
- BF(10, 13,-COS2_2 , 1);
- BF(18, 21, COS2_2 , 1);
- BF(26, 29,-COS2_2 , 1);
- /* pass 4 */
- BF( 1, 2, COS3_1 , 2);
- BF( 5, 6,-COS3_1 , 2);
- BF( 9, 10, COS3_1 , 2);
- BF(13, 14,-COS3_1 , 2);
- BF(17, 18, COS3_1 , 2);
- BF(21, 22,-COS3_1 , 2);
- BF(25, 26, COS3_1 , 2);
- BF(29, 30,-COS3_1 , 2);
-
- /* pass 5 */
- BF1( 0, 1, 2, 3);
- BF2( 4, 5, 6, 7);
- BF1( 8, 9, 10, 11);
- BF2(12, 13, 14, 15);
- BF1(16, 17, 18, 19);
- BF2(20, 21, 22, 23);
- BF1(24, 25, 26, 27);
- BF2(28, 29, 30, 31);
-
- /* pass 6 */
-
- ADD( 8, 12);
- ADD(12, 10);
- ADD(10, 14);
- ADD(14, 9);
- ADD( 9, 13);
- ADD(13, 11);
- ADD(11, 15);
-
- out[ 0] = tab[0];
- out[16] = tab[1];
- out[ 8] = tab[2];
- out[24] = tab[3];
- out[ 4] = tab[4];
- out[20] = tab[5];
- out[12] = tab[6];
- out[28] = tab[7];
- out[ 2] = tab[8];
- out[18] = tab[9];
- out[10] = tab[10];
- out[26] = tab[11];
- out[ 6] = tab[12];
- out[22] = tab[13];
- out[14] = tab[14];
- out[30] = tab[15];
-
- ADD(24, 28);
- ADD(28, 26);
- ADD(26, 30);
- ADD(30, 25);
- ADD(25, 29);
- ADD(29, 27);
- ADD(27, 31);
-
- out[ 1] = tab[16] + tab[24];
- out[17] = tab[17] + tab[25];
- out[ 9] = tab[18] + tab[26];
- out[25] = tab[19] + tab[27];
- out[ 5] = tab[20] + tab[28];
- out[21] = tab[21] + tab[29];
- out[13] = tab[22] + tab[30];
- out[29] = tab[23] + tab[31];
- out[ 3] = tab[24] + tab[20];
- out[19] = tab[25] + tab[21];
- out[11] = tab[26] + tab[22];
- out[27] = tab[27] + tab[23];
- out[ 7] = tab[28] + tab[18];
- out[23] = tab[29] + tab[19];
- out[15] = tab[30] + tab[17];
- out[31] = tab[31];
-}
-
-#if FRAC_BITS <= 15
-
-static inline int round_sample(int *sum)