diff options
Diffstat (limited to 'code/libspeex/cb_search_bfin.h')
| -rw-r--r-- | code/libspeex/cb_search_bfin.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/code/libspeex/cb_search_bfin.h b/code/libspeex/cb_search_bfin.h new file mode 100644 index 0000000..ae9cf83 --- /dev/null +++ b/code/libspeex/cb_search_bfin.h @@ -0,0 +1,112 @@ +/* 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" + ); +} |