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Diffstat (limited to 'drivers/speex/ltp_bfin.h')
-rw-r--r--drivers/speex/ltp_bfin.h419
1 files changed, 0 insertions, 419 deletions
diff --git a/drivers/speex/ltp_bfin.h b/drivers/speex/ltp_bfin.h
deleted file mode 100644
index b530f85986..0000000000
--- a/drivers/speex/ltp_bfin.h
+++ /dev/null
@@ -1,419 +0,0 @@
-/* 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
-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
-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_word16_t *C, spx_word16_t *g, spx_word16_t pitch_control)
-{
- spx_word32_t sum;
- __asm__ __volatile__
- (
- "A0 = 0;\n\t"
-
- "R0 = W[%1++];\n\t"
- "R1.L = %2.L*%5.L (IS);\n\t"
- "A0 += R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %3.L*%5.L (IS);\n\t"
- "A0 += R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %4.L*%5.L (IS);\n\t"
- "A0 += R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %2.L*%3.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %4.L*%3.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %4.L*%2.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %2.L*%2.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %3.L*%3.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS) || R0 = W[%1++];\n\t"
-
- "R1.L = %4.L*%4.L (IS);\n\t"
- "A0 -= R1.L*R0.L (IS);\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;
-}
-
-#define OVERRIDE_OPEN_LOOP_NBEST_PITCH
-#ifdef OVERRIDE_OPEN_LOOP_NBEST_PITCH
-void open_loop_nbest_pitch(spx_word16_t *sw, int start, int end, int len, int *pitch, spx_word16_t *gain, int N, char *stack)
-{
- int i,j,k;
- VARDECL(spx_word32_t *best_score);
- VARDECL(spx_word32_t *best_ener);
- spx_word32_t e0;
- VARDECL(spx_word32_t *corr);
- VARDECL(spx_word32_t *energy);
-
- ALLOC(best_score, N, spx_word32_t);
- ALLOC(best_ener, N, spx_word32_t);
- ALLOC(corr, end-start+1, spx_word32_t);
- ALLOC(energy, end-start+2, spx_word32_t);
-
- for (i=0;i<N;i++)
- {
- best_score[i]=-1;
- best_ener[i]=0;
- pitch[i]=start;
- }
-
- energy[0]=inner_prod(sw-start, sw-start, len);
- e0=inner_prod(sw, sw, len);
-
- /* energy update -------------------------------------*/
-
- __asm__ __volatile__
- (
-" P0 = %0;\n\t"
-" I1 = %1;\n\t"
-" L1 = 0;\n\t"
-" I2 = %2;\n\t"
-" L2 = 0;\n\t"
-" R2 = [P0++];\n\t"
-" R3 = 0;\n\t"
-" LSETUP (eu1, eu2) LC1 = %3;\n\t"
-"eu1: R1.L = W [I1--] || R0.L = W [I2--] ;\n\t"
-" R1 = R1.L * R1.L (IS);\n\t"
-" R0 = R0.L * R0.L (IS);\n\t"
-" R1 >>>= 6;\n\t"
-" R1 = R1 + R2;\n\t"
-" R0 >>>= 6;\n\t"
-" R1 = R1 - R0;\n\t"
-" R2 = MAX(R1,R3);\n\t"
-"eu2: [P0++] = R2;\n\t"
- : : "d" (energy), "d" (&sw[-start-1]), "d" (&sw[-start+len-1]),
- "a" (end-start)
- : "P0", "I1", "I2", "R0", "R1", "R2", "R3"
-#if (__GNUC__ == 4)
- , "LC1"
-#endif
- );
-
- pitch_xcorr(sw, sw-end, corr, len, end-start+1, stack);
-
- /* FIXME: Fixed-point and floating-point code should be merged */
- {
- VARDECL(spx_word16_t *corr16);
- VARDECL(spx_word16_t *ener16);
- ALLOC(corr16, end-start+1, spx_word16_t);
- ALLOC(ener16, end-start+1, spx_word16_t);
- /* Normalize to 180 so we can square it and it still fits in 16 bits */
- normalize16(corr, corr16, 180, end-start+1);
- normalize16(energy, ener16, 180, end-start+1);
-
- if (N == 1) {
- /* optimised asm to handle N==1 case */
- __asm__ __volatile__
- (
-" I0 = %1;\n\t" /* I0: corr16[] */
-" L0 = 0;\n\t"
-" I1 = %2;\n\t" /* I1: energy */
-" L1 = 0;\n\t"
-" R2 = -1;\n\t" /* R2: best score */
-" R3 = 0;\n\t" /* R3: best energy */
-" P0 = %4;\n\t" /* P0: best pitch */
-" P1 = %4;\n\t" /* P1: counter */
-" LSETUP (sl1, sl2) LC1 = %3;\n\t"
-"sl1: R0.L = W [I0++] || R1.L = W [I1++];\n\t"
-" R0 = R0.L * R0.L (IS);\n\t"
-" R1 += 1;\n\t"
-" R4 = R0.L * R3.L;\n\t"
-" R5 = R2.L * R1.L;\n\t"
-" cc = R5 < R4;\n\t"
-" if cc R2 = R0;\n\t"
-" if cc R3 = R1;\n\t"
-" if cc P0 = P1;\n\t"
-"sl2: P1 += 1;\n\t"
-" %0 = P0;\n\t"
- : "=&d" (pitch[0])
- : "a" (corr16), "a" (ener16), "a" (end+1-start), "d" (start)
- : "P0", "P1", "I0", "I1", "R0", "R1", "R2", "R3", "R4", "R5"
-#if (__GNUC__ == 4)
- , "LC1"
-#endif
- );
-
- }
- else {
- for (i=start;i<=end;i++)
- {
- spx_word16_t tmp = MULT16_16_16(corr16[i-start],corr16[i-start]);
- /* Instead of dividing the tmp by the energy, we multiply on the other side */
- if (MULT16_16(tmp,best_ener[N-1])>MULT16_16(best_score[N-1],ADD16(1,ener16[i-start])))
- {
- /* We can safely put it last and then check */
- best_score[N-1]=tmp;
- best_ener[N-1]=ener16[i-start]+1;
- pitch[N-1]=i;
- /* Check if it comes in front of others */
- for (j=0;j<N-1;j++)
- {
- if (MULT16_16(tmp,best_ener[j])>MULT16_16(best_score[j],ADD16(1,ener16[i-start])))
- {
- for (k=N-1;k>j;k--)
- {
- best_score[k]=best_score[k-1];
- best_ener[k]=best_ener[k-1];
- pitch[k]=pitch[k-1];
- }
- best_score[j]=tmp;
- best_ener[j]=ener16[i-start]+1;
- pitch[j]=i;
- break;
- }
- }
- }
- }
- }
- }
-
- /* Compute open-loop gain */
- if (gain)
- {
- for (j=0;j<N;j++)
- {
- spx_word16_t g;
- i=pitch[j];
- g = DIV32(corr[i-start], 10+SHR32(MULT16_16(spx_sqrt(e0),spx_sqrt(energy[i-start])),6));
- /* FIXME: g = max(g,corr/energy) */
- if (g<0)
- g = 0;
- gain[j]=g;
- }
- }
-}
-#endif
-
-#define OVERRIDE_PITCH_GAIN_SEARCH_3TAP_VQ
-#ifdef OVERRIDE_PITCH_GAIN_SEARCH_3TAP_VQ
-static int pitch_gain_search_3tap_vq(
- const signed char *gain_cdbk,
- int gain_cdbk_size,
- spx_word16_t *C16,
- spx_word16_t max_gain
-)
-{
- const signed char *ptr=gain_cdbk;
- int best_cdbk=0;
- spx_word32_t best_sum=-VERY_LARGE32;
- spx_word32_t sum=0;
- spx_word16_t g[3];
- spx_word16_t pitch_control=64;
- spx_word16_t gain_sum;
- int i;
-
- /* fast asm version of VQ codebook search */
-
- __asm__ __volatile__
- (
-
-" P0 = %2;\n\t" /* P0: ptr to gain_cdbk */
-" L1 = 0;\n\t" /* no circ addr for L1 */
-" %0 = 0;\n\t" /* %0: best_sum */
-" %1 = 0;\n\t" /* %1: best_cbdk */
-" P1 = 0;\n\t" /* P1: loop counter */
-
-" LSETUP (pgs1, pgs2) LC1 = %4;\n\t"
-"pgs1: R2 = B [P0++] (X);\n\t" /* R2: g[0] */
-" R3 = B [P0++] (X);\n\t" /* R3: g[1] */
-" R4 = B [P0++] (X);\n\t" /* R4: g[2] */
-" R2 += 32;\n\t"
-" R3 += 32;\n\t"
-" R4 += 32;\n\t"
-" R4.H = 64;\n\t" /* R4.H: pitch_control */
-
-" R0 = B [P0++] (X);\n\t"
-" B0 = R0;\n\t" /* BO: gain_sum */
-
- /* compute_pitch_error() -------------------------------*/
-
-" I1 = %3;\n\t" /* I1: ptr to C */
-" A0 = 0;\n\t"
-
-" R0.L = W[I1++];\n\t"
-" R1.L = R2.L*R4.H (IS);\n\t"
-" A0 += R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R3.L*R4.H (IS);\n\t"
-" A0 += R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R4.L*R4.H (IS);\n\t"
-" A0 += R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R2.L*R3.L (IS);\n\t"
-" A0 -= R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R4.L*R3.L (IS);\n\t"
-" A0 -= R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R4.L*R2.L (IS);\n\t"
-" A0 -= R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R2.L*R2.L (IS);\n\t"
-" A0 -= R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R3.L*R3.L (IS);\n\t"
-" A0 -= R1.L*R0.L (IS) || R0.L = W[I1++];\n\t"
-
-" R1.L = R4.L*R4.L (IS);\n\t"
-" R0 = (A0 -= R1.L*R0.L) (IS);\n\t"
-
-/*
- Re-arrange the if-then to code efficiently on the Blackfin:
-
- if (sum>best_sum && gain_sum<=max_gain) ------ (1)
-
- if (sum>best_sum && !(gain_sum>max_gain)) ------ (2)
-
- if (max_gain<=gain_sum) { ------ (3)
- sum = -VERY_LARGE32;
- }
- if (best_sum<=sum)
-
- The blackin cc instructions are all of the form:
-
- cc = x < y (or cc = x <= y)
-*/
-" R1 = B0\n\t"
-" R2 = %5\n\t"
-" R3 = %6\n\t"
-" cc = R2 <= R1;\n\t"
-" if cc R0 = R3;\n\t"
-" cc = %0 <= R0;\n\t"
-" if cc %0 = R0;\n\t"
-" if cc %1 = P1;\n\t"
-
-"pgs2: P1 += 1;\n\t"
-
- : "=&d" (best_sum), "=&d" (best_cdbk)
- : "a" (gain_cdbk), "a" (C16), "a" (gain_cdbk_size), "a" (max_gain),
- "b" (-VERY_LARGE32)
- : "R0", "R1", "R2", "R3", "R4", "P0",
- "P1", "I1", "L1", "A0", "B0"
-#if (__GNUC__ == 4)
- , "LC1"
-#endif
- );
-
- return best_cdbk;
-}
-#endif
-
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