Initial WebM release

1 files changed, 68 insertions, 0 deletions

diff --git a/vp8/decoder/arm/armv6/dequantize_v6.asm b/vp8/decoder/arm/armv6/dequantize_v6.asm
new file mode 100644
index 000000000..95e38594f
--- /dev/null
+++ b/vp8/decoder/arm/armv6/dequantize_v6.asm
@@ -0,0 +1,68 @@
+;
+;  Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
+;
+;  Use of this source code is governed by a BSD-style license and patent
+;  grant that can be found in the LICENSE file in the root of the source
+;  tree. All contributing project authors may be found in the AUTHORS
+;  file in the root of the source tree.
+;
+
+
+    EXPORT  |vp8_dequantize_b_loop_v6|
+
+    AREA    |.text|, CODE, READONLY  ; name this block of code
+;-------------------------------
+;void   vp8_dequantize_b_loop_v6(short *Q, short *DQC, short *DQ);
+; r0    short *Q,
+; r1    short *DQC
+; r2    short *DQ
+|vp8_dequantize_b_loop_v6| PROC
+    stmdb   sp!, {r4-r9, lr}
+
+    ldr     r3, [r0]                ;load Q
+    ldr     r4, [r1]                ;load DQC
+    ldr     r5, [r0, #4]
+    ldr     r6, [r1, #4]
+
+    mov     r12, #2                 ;loop counter
+
+dequant_loop
+    smulbb  r7, r3, r4              ;multiply
+    smultt  r8, r3, r4
+    smulbb  r9, r5, r6
+    smultt  lr, r5, r6
+
+    ldr     r3, [r0, #8]
+    ldr     r4, [r1, #8]
+    ldr     r5, [r0, #12]
+    ldr     r6, [r1, #12]
+
+    strh    r7, [r2], #2            ;store result
+    smulbb  r7, r3, r4              ;multiply
+    strh    r8, [r2], #2
+    smultt  r8, r3, r4
+    strh    r9, [r2], #2
+    smulbb  r9, r5, r6
+    strh    lr, [r2], #2
+    smultt  lr, r5, r6
+
+    subs    r12, r12, #1
+
+    add     r0, r0, #16
+    add     r1, r1, #16
+
+    ldrne       r3, [r0]
+    strh    r7, [r2], #2            ;store result
+    ldrne       r4, [r1]
+    strh    r8, [r2], #2
+    ldrne       r5, [r0, #4]
+    strh    r9, [r2], #2
+    ldrne       r6, [r1, #4]
+    strh    lr, [r2], #2
+
+    bne     dequant_loop
+
+    ldmia   sp!, {r4-r9, pc}
+    ENDP    ;|vp8_dequantize_b_loop_v6|
+
+    END