| /* Copyright (C) 2005 Analog Devices */ |
| /** |
| @author Jean-Marc Valin |
| @file cb_search_bfin.h |
| @brief Fixed codebook 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_COMPUTE_WEIGHTED_CODEBOOK |
| void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack) |
| { |
| int i; |
| for (i=0;i<shape_cb_size;i++) |
| { |
| __asm__ __volatile__ ( |
| "P0 = %0;\n\t" |
| "LC0 = P0;\n\t" |
| "P1 = %1;\n\t" |
| "P2 = %2;\n\t" |
| "P3 = %3;\n\t" |
| "P0 = 1;\n\t" |
| "L0 = 0;\n\t" |
| "L1 = 0;\n\t" |
| "R2 = 0;\n\t" |
| "A1 = 0;\n\t" |
| "LOOP outter%= LC0;\n\t" |
| "LOOP_BEGIN outter%=;\n\t" |
| "A0 = 0;\n\t" |
| "P4 = P1;\n\t" |
| "I1 = P2;\n\t" |
| "R0 = B[P4++] (X) || R1.L = W[I1--];\n\t" |
| "LOOP inner%= LC1 = P0;\n\t" |
| "LOOP_BEGIN inner%=;\n\t" |
| "A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t" |
| "LOOP_END inner%=;\n\t" |
| "R0 = A0;\n\t" |
| "R0 >>>= 13;\n\t" |
| "A1 += R0.L*R0.L (IS);\n\t" |
| "W[P3++] = R0;\n\t" |
| "P0 += 1;\n\t" |
| "P2 += 2;\n\t" |
| "LOOP_END outter%=;\n\t" |
| "P4 = %4;\n\t" |
| "R1 = A1;\n\t" |
| "[P4] = R1;\n\t" |
| : |
| : "m" (subvect_size), "m" (shape_cb), "m" (r), "m" (resp), "m" (E) |
| : "A0", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "I0", "I1", "L0", |
| "L1", "A0", "A1", "memory" |
| #if !(__GNUC__ == 3) |
| , "LC0", "LC1" /* gcc 3.4 doesn't know about LC registers */ |
| #endif |
| ); |
| shape_cb += subvect_size; |
| resp += subvect_size; |
| E++; |
| } |
| } |
| |
| #define OVERRIDE_TARGET_UPDATE |
| static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len) |
| { |
| if (!len) |
| return; |
| __asm__ __volatile__ |
| ( |
| "I0 = %0;\n\t" |
| "I1 = %1;\n\t" |
| "L0 = 0;\n\t" |
| "L1 = 0;\n\t" |
| "R2 = 4096;\n\t" |
| "LOOP tupdate%= LC0 = %3;\n\t" |
| "LOOP_BEGIN tupdate%=;\n\t" |
| "R0.L = W[I0] || R1.L = W[I1++];\n\t" |
| "R1 = (A1 = R1.L*%2.L) (IS);\n\t" |
| "R1 = R1 + R2;\n\t" |
| "R1 >>>= 13;\n\t" |
| "R0.L = R0.L - R1.L;\n\t" |
| "W[I0++] = R0.L;\n\t" |
| "LOOP_END tupdate%=;\n\t" |
| : |
| : "a" (t), "a" (r), "d" (g), "a" (len) |
| : "R0", "R1", "R2", "A1", "I0", "I1", "L0", "L1" |
| ); |
| } |