1 files changed, 104 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Deemph_32_opt.s b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Deemph_32_opt.s
new file mode 100644
index 0000000..0eb5e9f
--- /dev/null
+++ b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Deemph_32_opt.s
@@ -0,0 +1,104 @@
+@/*
+@ ** Copyright 2003-2010, VisualOn, Inc.
+@ **
+@ ** Licensed under the Apache License, Version 2.0 (the "License");
+@ ** you may not use this file except in compliance with the License.
+@ ** You may obtain a copy of the License at
+@ **
+@ **     http://www.apache.org/licenses/LICENSE-2.0
+@ **
+@ ** Unless required by applicable law or agreed to in writing, software
+@ ** distributed under the License is distributed on an "AS IS" BASIS,
+@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@ ** See the License for the specific language governing permissions and
+@ ** limitations under the License.
+@ */
+
+@void Deemph_32(
+@     Word16 x_hi[],                        /* (i)     : input signal (bit31..16) */
+@     Word16 x_lo[],                        /* (i)     : input signal (bit15..4)  */
+@     Word16 y[],                           /* (o)     : output signal (x16)      */
+@     Word16 mu,                            /* (i) Q15 : deemphasis factor        */
+@     Word16 L,                             /* (i)     : vector size              */
+@     Word16 * mem                          /* (i/o)   : memory (y[-1])           */
+@     )
+
+@x_hi     RN      R0
+@x_lo     RN      R1
+@y[]      RN      R2
+@*mem     RN      R3
+
+           .section  .text
+           .global   Deemph_32_asm
+	   
+Deemph_32_asm:
+
+           STMFD   	r13!, {r4 - r12, r14} 
+	   MOV          r4, #2                   @i=0
+	   LDRSH        r6, [r0], #2             @load x_hi[0]
+	   LDRSH        r7, [r1], #2             @load x_lo[0]
+	   LDR          r5, =22282               @r5---mu
+	   MOV          r11, #0x8000
+
+           @y[0]
+	   MOV          r10, r6, LSL #16         @L_tmp = x_hi[0]<<16
+	   MOV          r8,  r5, ASR #1          @fac = mu >> 1
+	   LDR          r5,  [r3]
+	   ADD          r12, r10, r7, LSL #4     @L_tmp += x_lo[0] << 4
+	   MOV          r10, r12, LSL #3         @L_tmp <<= 3
+	   MUL          r9, r5, r8
+	   LDRSH        r6, [r0], #2             @load x_hi[1] 
+	   QDADD        r10, r10, r9
+	   LDRSH        r7, [r1], #2             @load x_lo[1]  
+	   MOV          r12, r10, LSL #1         @L_tmp = L_mac(L_tmp, *mem, fac)
+	   QADD         r10, r12, r11
+	   MOV          r14, r10, ASR #16        @y[0] = round(L_tmp)
+
+
+	   MOV          r10, r6, LSL #16
+	   ADD          r12, r10, r7, LSL #4
+           STRH         r14, [r2], #2            @update y[0]
+	   MOV          r10, r12, LSL #3
+	   MUL          r9, r14, r8
+	   QDADD        r10, r10, r9
+	   MOV          r12, r10, LSL #1
+	   QADD         r10, r12, r11
+	   MOV          r14, r10, ASR #16        @y[1] = round(L_tmp)
+
+LOOP:
+           LDRSH        r6, [r0], #2             @load x_hi[]
+	   LDRSH        r7, [r1], #2
+	   STRH         r14, [r2], #2
+	   MOV          r10, r6, LSL #16
+	   ADD          r12, r10, r7, LSL #4
+	   MUL          r9, r14, r8
+	   MOV          r10, r12, LSL #3
+	   QDADD        r10, r10, r9
+           LDRSH        r6, [r0], #2             @load x_hi[]
+	   MOV          r12, r10, LSL #1
+	   QADD         r10, r12, r11
+	   LDRSH        r7, [r1], #2
+	   MOV          r14, r10, ASR #16
+
+	   MOV          r10, r6, LSL #16
+	   ADD          r12, r10, r7, LSL #4
+	   STRH         r14, [r2], #2
+	   MUL          r9, r14, r8
+	   MOV          r10, r12, LSL #3
+	   QDADD        r10, r10, r9
+           ADD          r4, r4, #2
+	   MOV          r12, r10, LSL #1
+	   QADD         r10, r12, r11
+           CMP          r4, #64
+	   MOV          r14, r10, ASR #16
+
+           BLT          LOOP
+           STR          r14, [r3]
+           STRH         r14, [r2]	   
+
+           LDMFD   	r13!, {r4 - r12, r15} 
+
+	   @ENDP
+	   .END
+
+