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- if(order <= 12) {
- if(order > 8) {
- if(order > 10) {
- if(order == 12) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[11] * data[i-12];
- sum += qlp_coeff[10] * data[i-11];
- sum += qlp_coeff[9] * data[i-10];
- sum += qlp_coeff[8] * data[i-9];
- sum += qlp_coeff[7] * data[i-8];
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 11 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[10] * data[i-11];
- sum += qlp_coeff[9] * data[i-10];
- sum += qlp_coeff[8] * data[i-9];
- sum += qlp_coeff[7] * data[i-8];
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- }
- else {
- if(order == 10) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[9] * data[i-10];
- sum += qlp_coeff[8] * data[i-9];
- sum += qlp_coeff[7] * data[i-8];
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 9 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[8] * data[i-9];
- sum += qlp_coeff[7] * data[i-8];
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- }
- }
- else if(order > 4) {
- if(order > 6) {
- if(order == 8) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[7] * data[i-8];
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 7 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[6] * data[i-7];
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- }
- else {
- if(order == 6) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[5] * data[i-6];
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 5 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[4] * data[i-5];
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- }
- }
- else {
- if(order > 2) {
- if(order == 4) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[3] * data[i-4];
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 3 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[2] * data[i-3];
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- }
- else {
- if(order == 2) {
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- sum += qlp_coeff[1] * data[i-2];
- sum += qlp_coeff[0] * data[i-1];
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
- else { /* order == 1 */
- for(i = 0; i < (int)data_len; i++)
- residual[i] = data[i] - ((qlp_coeff[0] * data[i-1]) >> lp_quantization);
- }
- }
- }
- }
- else { /* order > 12 */
- for(i = 0; i < (int)data_len; i++) {
- sum = 0;
- switch(order) {
- case 32: sum += qlp_coeff[31] * data[i-32];
- case 31: sum += qlp_coeff[30] * data[i-31];
- case 30: sum += qlp_coeff[29] * data[i-30];
- case 29: sum += qlp_coeff[28] * data[i-29];
- case 28: sum += qlp_coeff[27] * data[i-28];
- case 27: sum += qlp_coeff[26] * data[i-27];
- case 26: sum += qlp_coeff[25] * data[i-26];
- case 25: sum += qlp_coeff[24] * data[i-25];
- case 24: sum += qlp_coeff[23] * data[i-24];
- case 23: sum += qlp_coeff[22] * data[i-23];
- case 22: sum += qlp_coeff[21] * data[i-22];
- case 21: sum += qlp_coeff[20] * data[i-21];
- case 20: sum += qlp_coeff[19] * data[i-20];
- case 19: sum += qlp_coeff[18] * data[i-19];
- case 18: sum += qlp_coeff[17] * data[i-18];
- case 17: sum += qlp_coeff[16] * data[i-17];
- case 16: sum += qlp_coeff[15] * data[i-16];
- case 15: sum += qlp_coeff[14] * data[i-15];
- case 14: sum += qlp_coeff[13] * data[i-14];
- case 13: sum += qlp_coeff[12] * data[i-13];
- sum += qlp_coeff[11] * data[i-12];
- sum += qlp_coeff[10] * data[i-11];
- sum += qlp_coeff[ 9] * data[i-10];
- sum += qlp_coeff[ 8] * data[i- 9];
- sum += qlp_coeff[ 7] * data[i- 8];
- sum += qlp_coeff[ 6] * data[i- 7];
- sum += qlp_coeff[ 5] * data[i- 6];
- sum += qlp_coeff[ 4] * data[i- 5];
- sum += qlp_coeff[ 3] * data[i- 4];
- sum += qlp_coeff[ 2] * data[i- 3];
- sum += qlp_coeff[ 1] * data[i- 2];
- sum += qlp_coeff[ 0] * data[i- 1];
- }
- residual[i] = data[i] - (sum >> lp_quantization);
- }
- }
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