| /* Copyright (C) 2005 Analog Devices */ |
| /** |
| @file ltp_bfin.h |
| @author Jean-Marc Valin |
| @brief Long-Term Prediction functions (Blackfin version) |
| */ |
| /* |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| - Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| - Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| - Neither the name of the Xiph.org Foundation nor the names of its |
| contributors may be used to endorse or promote products derived from |
| this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #define OVERRIDE_INNER_PROD |
| static spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len) |
| { |
| spx_word32_t sum=0; |
| __asm__ __volatile__ ( |
| "P0 = %3;\n\t" |
| "P1 = %1;\n\t" |
| "P2 = %2;\n\t" |
| "I0 = P1;\n\t" |
| "I1 = P2;\n\t" |
| "L0 = 0;\n\t" |
| "L1 = 0;\n\t" |
| "A0 = 0;\n\t" |
| "R0.L = W[I0++] || R1.L = W[I1++];\n\t" |
| "LOOP inner%= LC0 = P0;\n\t" |
| "LOOP_BEGIN inner%=;\n\t" |
| "A0 += R0.L*R1.L (IS) || R0.L = W[I0++] || R1.L = W[I1++];\n\t" |
| "LOOP_END inner%=;\n\t" |
| "A0 += R0.L*R1.L (IS);\n\t" |
| "A0 = A0 >>> 6;\n\t" |
| "R0 = A0;\n\t" |
| "%0 = R0;\n\t" |
| : "=m" (sum) |
| : "m" (x), "m" (y), "d" (len-1) |
| : "P0", "P1", "P2", "R0", "R1", "A0", "I0", "I1", "L0", "L1", "R3" |
| ); |
| return sum; |
| } |
| |
| #define OVERRIDE_PITCH_XCORR |
| static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack) |
| { |
| corr += nb_pitch - 1; |
| __asm__ __volatile__ ( |
| "P2 = %0;\n\t" |
| "I0 = P2;\n\t" /* x in I0 */ |
| "B0 = P2;\n\t" /* x in B0 */ |
| "R0 = %3;\n\t" /* len in R0 */ |
| "P3 = %3;\n\t" |
| "P3 += -2;\n\t" /* len in R0 */ |
| "P4 = %4;\n\t" /* nb_pitch in R0 */ |
| "R1 = R0 << 1;\n\t" /* number of bytes in x */ |
| "L0 = R1;\n\t" |
| "P0 = %1;\n\t" |
| |
| "P1 = %2;\n\t" |
| "B1 = P1;\n\t" |
| "L1 = 0;\n\t" /*Disable looping on I1*/ |
| |
| "r0 = [I0++];\n\t" |
| "LOOP pitch%= LC0 = P4 >> 1;\n\t" |
| "LOOP_BEGIN pitch%=;\n\t" |
| "I1 = P0;\n\t" |
| "A1 = A0 = 0;\n\t" |
| "R1 = [I1++];\n\t" |
| "LOOP inner_prod%= LC1 = P3 >> 1;\n\t" |
| "LOOP_BEGIN inner_prod%=;\n\t" |
| "A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t" |
| "A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R1.H = W[I1++] || R0 = [I0++];\n\t" |
| "LOOP_END inner_prod%=;\n\t" |
| "A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t" |
| "A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R0 = [I0++];\n\t" |
| "A0 = A0 >>> 6;\n\t" |
| "A1 = A1 >>> 6;\n\t" |
| "R2 = A0, R3 = A1;\n\t" |
| "[P1--] = r2;\n\t" |
| "[P1--] = r3;\n\t" |
| "P0 += 4;\n\t" |
| "LOOP_END pitch%=;\n\t" |
| "L0 = 0;\n\t" |
| : : "m" (_x), "m" (_y), "m" (corr), "m" (len), "m" (nb_pitch) |
| : "A0", "A1", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "R3", "I0", "I1", "L0", "L1", "B0", "B1", "memory" |
| ); |
| } |
| |
| #define OVERRIDE_COMPUTE_PITCH_ERROR |
| static inline spx_word32_t compute_pitch_error(spx_word32_t *C, spx_word16_t *g, spx_word16_t pitch_control) |
| { |
| spx_word32_t sum; |
| __asm__ __volatile__ |
| ( |
| "A1 = A0 = 0;\n\t" |
| |
| "R0 = [%1++];\n\t" |
| "R1.L = %2.L*%5.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %3.L*%5.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %4.L*%5.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %2.L*%3.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %4.L*%3.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %4.L*%2.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %2.L*%2.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %3.L*%3.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t" |
| |
| "R1.L = %4.L*%4.L (IS);\n\t" |
| "R0 <<= 1;\n\t" |
| "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS);\n\t" |
| |
| "A1 = A1 >>> 16;\n\t" |
| "A0 += A1;\n\t" |
| "%0 = A0;\n\t" |
| : "=&D" (sum), "=a" (C) |
| : "d" (g[0]), "d" (g[1]), "d" (g[2]), "d" (pitch_control), "1" (C) |
| : "R0", "R1", "R2", "A0" |
| ); |
| return sum; |
| } |
| |