| /* Copyright (C) 2006 David Rowe */ |
| /** |
| @file quant_lsp_bfin.h |
| @author David Rowe |
| @brief Various compatibility routines for Speex (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_LSP_QUANT |
| #ifdef OVERRIDE_LSP_QUANT |
| |
| /* |
| Note http://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html |
| well tell you all the magic resgister constraints used below |
| for gcc in-line asm. |
| */ |
| |
| static int lsp_quant( |
| spx_word16_t *x, |
| const signed char *cdbk, |
| int nbVec, |
| int nbDim |
| ) |
| { |
| int j; |
| spx_word32_t best_dist=1<<30; |
| int best_id=0; |
| |
| __asm__ __volatile__ |
| ( |
| " %0 = 1 (X);\n\t" /* %0: best_dist */ |
| " %0 <<= 30;\n\t" |
| " %1 = 0 (X);\n\t" /* %1: best_i */ |
| " P2 = %3\n\t" /* P2: ptr to cdbk */ |
| " R5 = 0;\n\t" /* R5: best cb entry */ |
| |
| " R0 = %5;\n\t" /* set up circ addr */ |
| " R0 <<= 1;\n\t" |
| " L0 = R0;\n\t" |
| " I0 = %2;\n\t" /* %2: &x[0] */ |
| " B0 = %2;\n\t" |
| |
| " R2.L = W [I0++];\n\t" |
| " LSETUP (1f, 2f) LC0 = %4;\n\t" |
| "1: R3 = 0;\n\t" /* R3: dist */ |
| " LSETUP (3f, 4f) LC1 = %5;\n\t" |
| "3: R1 = B [P2++] (X);\n\t" |
| " R1 <<= 5;\n\t" |
| " R0.L = R2.L - R1.L || R2.L = W [I0++];\n\t" |
| " R0 = R0.L*R0.L;\n\t" |
| "4: R3 = R3 + R0;\n\t" |
| |
| " cc =R3<%0;\n\t" |
| " if cc %0=R3;\n\t" |
| " if cc %1=R5;\n\t" |
| "2: R5 += 1;\n\t" |
| " L0 = 0;\n\t" |
| : "=&d" (best_dist), "=&d" (best_id) |
| : "a" (x), "b" (cdbk), "a" (nbVec), "a" (nbDim) |
| : "I0", "P2", "R0", "R1", "R2", "R3", "R5", "L0", "B0", "A0" |
| ); |
| |
| for (j=0;j<nbDim;j++) { |
| x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5)); |
| } |
| return best_id; |
| } |
| #endif |
| |
| #define OVERRIDE_LSP_WEIGHT_QUANT |
| #ifdef OVERRIDE_LSP_WEIGHT_QUANT |
| |
| /* |
| Note http://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html |
| well tell you all the magic resgister constraints used below |
| for gcc in-line asm. |
| */ |
| |
| static int lsp_weight_quant( |
| spx_word16_t *x, |
| spx_word16_t *weight, |
| const signed char *cdbk, |
| int nbVec, |
| int nbDim |
| ) |
| { |
| int j; |
| spx_word32_t best_dist=1<<30; |
| int best_id=0; |
| |
| __asm__ __volatile__ |
| ( |
| " %0 = 1 (X);\n\t" /* %0: best_dist */ |
| " %0 <<= 30;\n\t" |
| " %1 = 0 (X);\n\t" /* %1: best_i */ |
| " P2 = %4\n\t" /* P2: ptr to cdbk */ |
| " R5 = 0;\n\t" /* R5: best cb entry */ |
| |
| " R0 = %6;\n\t" /* set up circ addr */ |
| " R0 <<= 1;\n\t" |
| " L0 = R0;\n\t" |
| " L1 = R0;\n\t" |
| " I0 = %2;\n\t" /* %2: &x[0] */ |
| " I1 = %3;\n\t" /* %3: &weight[0] */ |
| " B0 = %2;\n\t" |
| " B1 = %3;\n\t" |
| |
| " LSETUP (1f, 2f) LC0 = %5;\n\t" |
| "1: R3 = 0 (X);\n\t" /* R3: dist */ |
| " LSETUP (3f, 4f) LC1 = %6;\n\t" |
| "3: R0.L = W [I0++] || R2.L = W [I1++];\n\t" |
| " R1 = B [P2++] (X);\n\t" |
| " R1 <<= 5;\n\t" |
| " R0.L = R0.L - R1.L;\n\t" |
| " R0 = R0.L*R0.L;\n\t" |
| " A1 = R2.L*R0.L (M,IS);\n\t" |
| " A1 = A1 >>> 16;\n\t" |
| " R1 = (A1 += R2.L*R0.H) (IS);\n\t" |
| "4: R3 = R3 + R1;\n\t" |
| |
| " cc =R3<%0;\n\t" |
| " if cc %0=R3;\n\t" |
| " if cc %1=R5;\n\t" |
| "2: R5 += 1;\n\t" |
| " L0 = 0;\n\t" |
| " L1 = 0;\n\t" |
| : "=&d" (best_dist), "=&d" (best_id) |
| : "a" (x), "a" (weight), "b" (cdbk), "a" (nbVec), "a" (nbDim) |
| : "I0", "I1", "P2", "R0", "R1", "R2", "R3", "R5", "A1", |
| "L0", "L1", "B0", "B1" |
| ); |
| |
| for (j=0;j<nbDim;j++) { |
| x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5)); |
| } |
| return best_id; |
| } |
| #endif |
