diff options
Diffstat (limited to 'vp8/encoder/arm/armv5te')
| -rw-r--r-- | vp8/encoder/arm/armv5te/boolhuff_armv5te.asm | 286 | ||||
| -rw-r--r-- | vp8/encoder/arm/armv5te/vp8_packtokens_armv5.asm | 293 | ||||
| -rw-r--r-- | vp8/encoder/arm/armv5te/vp8_packtokens_mbrow_armv5.asm | 328 | ||||
| -rw-r--r-- | vp8/encoder/arm/armv5te/vp8_packtokens_partitions_armv5.asm | 464 |
4 files changed, 1371 insertions, 0 deletions
diff --git a/vp8/encoder/arm/armv5te/boolhuff_armv5te.asm b/vp8/encoder/arm/armv5te/boolhuff_armv5te.asm new file mode 100644 index 000000000..e78dc3322 --- /dev/null +++ b/vp8/encoder/arm/armv5te/boolhuff_armv5te.asm @@ -0,0 +1,286 @@ +; +; Copyright (c) 2010 The WebM project authors. All Rights Reserved. +; +; Use of this source code is governed by a BSD-style license +; that can be found in the LICENSE file in the root of the source +; tree. An additional intellectual property rights grant can be found +; in the file PATENTS. All contributing project authors may +; be found in the AUTHORS file in the root of the source tree. +; + + + EXPORT |vp8_start_encode| + EXPORT |vp8_encode_bool| + EXPORT |vp8_stop_encode| + EXPORT |vp8_encode_value| + + INCLUDE vpx_vp8_enc_asm_offsets.asm + + ARM + REQUIRE8 + PRESERVE8 + + AREA |.text|, CODE, READONLY + +; r0 BOOL_CODER *br +; r1 unsigned char *source + +|vp8_start_encode| PROC + mov r12, #0 + mov r3, #255 + mvn r2, #23 + str r12, [r0, #vp8_writer_lowvalue] + str r3, [r0, #vp8_writer_range] + str r12, [r0, #vp8_writer_value] + str r2, [r0, #vp8_writer_count] + str r12, [r0, #vp8_writer_pos] + str r1, [r0, #vp8_writer_buffer] + bx lr + ENDP + +; r0 BOOL_CODER *br +; r1 int bit +; r2 int probability +|vp8_encode_bool| PROC + push {r4-r9, lr} + + mov r4, r2 + + ldr r2, [r0, #vp8_writer_lowvalue] + ldr r5, [r0, #vp8_writer_range] + ldr r3, [r0, #vp8_writer_count] + + sub r7, r5, #1 ; range-1 + + cmp r1, #0 + mul r4, r4, r7 ; ((range-1) * probability) + + mov r7, #1 + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * probability) >> 8) + + addne r2, r2, r4 ; if (bit) lowvalue += split + subne r4, r5, r4 ; if (bit) range = range-split + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start +token_zero_while_loop + mov r9, #0 + strb r9, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r1, [r7, r4] + cmpge r1, #0xff + beq token_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r9, [r7, r4] ; w->buffer[x] + add r9, r9, #1 + strb r9, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r9, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r1, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r1, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r9, r4] ; w->buffer[w->pos++] + +token_count_lt_zero + lsl r2, r2, r6 ; lowvalue <<= shift + + str r2, [r0, #vp8_writer_lowvalue] + str r5, [r0, #vp8_writer_range] + str r3, [r0, #vp8_writer_count] + pop {r4-r9, pc} + ENDP + +; r0 BOOL_CODER *br +|vp8_stop_encode| PROC + push {r4-r10, lr} + + ldr r2, [r0, #vp8_writer_lowvalue] + ldr r5, [r0, #vp8_writer_range] + ldr r3, [r0, #vp8_writer_count] + + mov r10, #32 + +stop_encode_loop + sub r7, r5, #1 ; range-1 + + mov r4, r7, lsl #7 ; ((range-1) * 128) + + mov r7, #1 + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * 128) >> 8) + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero_se ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set_se + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start_se +token_zero_while_loop_se + mov r9, #0 + strb r9, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start_se + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r1, [r7, r4] + cmpge r1, #0xff + beq token_zero_while_loop_se + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r9, [r7, r4] ; w->buffer[x] + add r9, r9, #1 + strb r9, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set_se + rsb r4, r6, #24 ; 24-offset + ldr r9, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r1, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r1, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r9, r4] ; w->buffer[w->pos++] + +token_count_lt_zero_se + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r10, r10, #1 + bne stop_encode_loop + + str r2, [r0, #vp8_writer_lowvalue] + str r5, [r0, #vp8_writer_range] + str r3, [r0, #vp8_writer_count] + pop {r4-r10, pc} + + ENDP + +; r0 BOOL_CODER *br +; r1 int data +; r2 int bits +|vp8_encode_value| PROC + push {r4-r11, lr} + + mov r10, r2 + + ldr r2, [r0, #vp8_writer_lowvalue] + ldr r5, [r0, #vp8_writer_range] + ldr r3, [r0, #vp8_writer_count] + + rsb r4, r10, #32 ; 32-n + + ; v is kept in r1 during the token pack loop + lsl r1, r1, r4 ; r1 = v << 32 - n + +encode_value_loop + sub r7, r5, #1 ; range-1 + + ; Decisions are made based on the bit value shifted + ; off of v, so set a flag here based on this. + ; This value is refered to as "bb" + lsls r1, r1, #1 ; bit = v >> n + mov r4, r7, lsl #7 ; ((range-1) * 128) + + mov r7, #1 + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * 128) >> 8) + + addcs r2, r2, r4 ; if (bit) lowvalue += split + subcs r4, r5, r4 ; if (bit) range = range-split + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero_ev ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set_ev + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start_ev +token_zero_while_loop_ev + mov r9, #0 + strb r9, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start_ev + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq token_zero_while_loop_ev + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r9, [r7, r4] ; w->buffer[x] + add r9, r9, #1 + strb r9, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set_ev + rsb r4, r6, #24 ; 24-offset + ldr r9, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r9, r4] ; w->buffer[w->pos++] + +token_count_lt_zero_ev + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r10, r10, #1 + bne encode_value_loop + + str r2, [r0, #vp8_writer_lowvalue] + str r5, [r0, #vp8_writer_range] + str r3, [r0, #vp8_writer_count] + pop {r4-r11, pc} + ENDP + + END diff --git a/vp8/encoder/arm/armv5te/vp8_packtokens_armv5.asm b/vp8/encoder/arm/armv5te/vp8_packtokens_armv5.asm new file mode 100644 index 000000000..3233d2a96 --- /dev/null +++ b/vp8/encoder/arm/armv5te/vp8_packtokens_armv5.asm @@ -0,0 +1,293 @@ +; +; Copyright (c) 2010 The WebM project authors. All Rights Reserved. +; +; Use of this source code is governed by a BSD-style license +; that can be found in the LICENSE file in the root of the source +; tree. An additional intellectual property rights grant can be found +; in the file PATENTS. All contributing project authors may +; be found in the AUTHORS file in the root of the source tree. +; + + + EXPORT |vp8cx_pack_tokens_armv5| + + INCLUDE vpx_vp8_enc_asm_offsets.asm + + ARM + REQUIRE8 + PRESERVE8 + + AREA |.text|, CODE, READONLY + +; r0 vp8_writer *w +; r1 const TOKENEXTRA *p +; r2 int xcount +; r3 vp8_coef_encodings +; s0 vp8_extra_bits +; s1 vp8_coef_tree +|vp8cx_pack_tokens_armv5| PROC + push {r4-r11, lr} + + ; Add size of xcount * sizeof (TOKENEXTRA) to get stop + ; sizeof (TOKENEXTRA) is 20 + add r2, r2, r2, lsl #2 ; xcount + sub sp, sp, #12 + add r2, r1, r2, lsl #2 ; stop = p + xcount + str r2, [sp, #0] + str r3, [sp, #8] ; save vp8_coef_encodings + ldr r2, [r0, #vp8_writer_lowvalue] + ldr r5, [r0, #vp8_writer_range] + ldr r3, [r0, #vp8_writer_count] + b check_p_lt_stop + +while_p_lt_stop + ldr r6, [r1, #tokenextra_token] ; t + ldr r4, [sp, #8] ; vp8_coef_encodings + mov lr, #0 + add r4, r4, r6, lsl #3 ; a = vp8_coef_encodings + t + ldr r9, [r1, #tokenextra_context_tree] ; pp + + ldr r7, [r1, #tokenextra_skip_eob_node] + + ldr r6, [r4, #vp8_token_value] ; v + ldr r8, [r4, #vp8_token_len] ; n + + ; vp8 specific skip_eob_node + cmp r7, #0 + movne lr, #2 ; i = 2 + subne r8, r8, #1 ; --n + + rsb r4, r8, #32 ; 32-n + ldr r10, [sp, #52] ; vp8_coef_tree + + ; v is kept in r12 during the token pack loop + lsl r12, r6, r4 ; r12 = v << 32 - n + +; loop start +token_loop + ldrb r4, [r9, lr, asr #1] ; pp [i>>1] + sub r7, r5, #1 ; range-1 + + ; Decisions are made based on the bit value shifted + ; off of v, so set a flag here based on this. + ; This value is refered to as "bb" + lsls r12, r12, #1 ; bb = v >> n + mul r4, r4, r7 ; ((range-1) * pp[i>>1])) + + ; bb can only be 0 or 1. So only execute this statement + ; if bb == 1, otherwise it will act like i + 0 + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = vp8_coef_tree[i+bb] + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start +token_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq token_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] ; w->buffer[x] + add r10, r10, #1 + strb r10, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++] + + ; r10 is used earlier in the loop, but r10 is used as + ; temp variable here. So after r10 is used, reload + ; vp8_coef_tree_dcd into r10 + ldr r10, [sp, #52] ; vp8_coef_tree + +token_count_lt_zero + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r8, r8, #1 ; --n + bne token_loop + + ldr r6, [r1, #tokenextra_token] ; t + ldr r7, [sp, #48] ; vp8_extra_bits + ; Add t * sizeof (vp8_extra_bit_struct) to get the desired + ; element. Here vp8_extra_bit_struct == 20 + add r6, r6, r6, lsl #2 ; b = vp8_extra_bits + t + add r12, r7, r6, lsl #2 ; b = vp8_extra_bits + t + + ldr r4, [r12, #vp8_extra_bit_struct_base_val] + cmp r4, #0 + beq skip_extra_bits + +; if( b->base_val) + ldr r8, [r12, #vp8_extra_bit_struct_len] ; L + ldr lr, [r1, #tokenextra_extra] ; e = p->Extra + cmp r8, #0 ; if( L) + beq no_extra_bits + + ldr r9, [r12, #vp8_extra_bit_struct_prob] + asr r7, lr, #1 ; v=e>>1 + + ldr r10, [r12, #vp8_extra_bit_struct_tree] + str r10, [sp, #4] ; b->tree + + rsb r4, r8, #32 + lsl r12, r7, r4 + + mov lr, #0 ; i = 0 + +extra_bits_loop + ldrb r4, [r9, lr, asr #1] ; pp[i>>1] + sub r7, r5, #1 ; range-1 + lsls r12, r12, #1 ; v >> n + mul r4, r4, r7 ; (range-1) * pp[i>>1] + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = b->tree[i+bb] + add r4, r7, r4, lsr #8 ; split = 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + clz r6, r4 + sub r6, r6, #24 + + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi extra_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset= shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl extra_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos - 1 + b extra_zero_while_start +extra_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +extra_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq extra_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] + add r10, r10, #1 + strb r10, [r7, r4] +extra_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++]=(lowvalue >> (24-offset)) + ldr r10, [sp, #4] ; b->tree +extra_count_lt_zero + lsl r2, r2, r6 + + subs r8, r8, #1 ; --n + bne extra_bits_loop ; while (n) + +no_extra_bits + ldr lr, [r1, #4] ; e = p->Extra + add r4, r5, #1 ; range + 1 + tst lr, #1 + lsr r4, r4, #1 ; split = (range + 1) >> 1 + addne r2, r2, r4 ; lowvalue += split + subne r4, r5, r4 ; range = range-split + tst r2, #0x80000000 ; lowvalue & 0x80000000 + lsl r5, r4, #1 ; range <<= 1 + beq end_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] + mov r7, #0 + sub r4, r4, #1 + b end_zero_while_start +end_zero_while_loop + strb r7, [r6, r4] + sub r4, r4, #1 ; x-- +end_zero_while_start + cmp r4, #0 + ldrge r6, [r0, #vp8_writer_buffer] + ldrb r12, [r6, r4] + cmpge r12, #0xff + beq end_zero_while_loop + + ldr r6, [r0, #vp8_writer_buffer] + ldrb r7, [r6, r4] + add r7, r7, #1 + strb r7, [r6, r4] +end_high_bit_not_set + adds r3, r3, #1 ; ++count + lsl r2, r2, #1 ; lowvalue <<= 1 + bne end_count_zero + + ldr r4, [r0, #vp8_writer_pos] + mvn r3, #7 + ldr r7, [r0, #vp8_writer_buffer] + lsr r6, r2, #24 ; lowvalue >> 24 + add r12, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r12, [r0, #0x10] + strb r6, [r7, r4] +end_count_zero +skip_extra_bits + add r1, r1, #TOKENEXTRA_SZ ; ++p +check_p_lt_stop + ldr r4, [sp, #0] ; stop + cmp r1, r4 ; while( p < stop) + bcc while_p_lt_stop + + str r2, [r0, #vp8_writer_lowvalue] + str r5, [r0, #vp8_writer_range] + str r3, [r0, #vp8_writer_count] + add sp, sp, #12 + pop {r4-r11, pc} + ENDP + + END diff --git a/vp8/encoder/arm/armv5te/vp8_packtokens_mbrow_armv5.asm b/vp8/encoder/arm/armv5te/vp8_packtokens_mbrow_armv5.asm new file mode 100644 index 000000000..a9b552ae1 --- /dev/null +++ b/vp8/encoder/arm/armv5te/vp8_packtokens_mbrow_armv5.asm @@ -0,0 +1,328 @@ +; +; Copyright (c) 2010 The WebM project authors. All Rights Reserved. +; +; Use of this source code is governed by a BSD-style license +; that can be found in the LICENSE file in the root of the source +; tree. An additional intellectual property rights grant can be found +; in the file PATENTS. All contributing project authors may +; be found in the AUTHORS file in the root of the source tree. +; + + + EXPORT |vp8cx_pack_mb_row_tokens_armv5| + + INCLUDE vpx_vp8_enc_asm_offsets.asm + + ARM + REQUIRE8 + PRESERVE8 + + AREA |.text|, CODE, READONLY + +; r0 VP8_COMP *cpi +; r1 vp8_writer *w +; r2 vp8_coef_encodings +; r3 vp8_extra_bits +; s0 vp8_coef_tree + +|vp8cx_pack_mb_row_tokens_armv5| PROC + push {r4-r11, lr} + sub sp, sp, #24 + + ; Compute address of cpi->common.mb_rows + ldr r4, _VP8_COMP_common_ + ldr r6, _VP8_COMMON_MBrows_ + add r4, r0, r4 + + ldr r5, [r4, r6] ; load up mb_rows + + str r2, [sp, #20] ; save vp8_coef_encodings + str r5, [sp, #12] ; save mb_rows + str r3, [sp, #8] ; save vp8_extra_bits + + ldr r4, _VP8_COMP_tplist_ + add r4, r0, r4 + ldr r7, [r4, #0] ; dereference cpi->tp_list + + mov r0, r1 ; keep same as other loops + + ldr r2, [r0, #vp8_writer_lowvalue] + ldr r5, [r0, #vp8_writer_range] + ldr r3, [r0, #vp8_writer_count] + +mb_row_loop + + ldr r1, [r7, #tokenlist_start] + ldr r9, [r7, #tokenlist_stop] + str r9, [sp, #0] ; save stop for later comparison + str r7, [sp, #16] ; tokenlist address for next time + + b check_p_lt_stop + + ; actuall work gets done here! + +while_p_lt_stop + ldr r6, [r1, #tokenextra_token] ; t + ldr r4, [sp, #20] ; vp8_coef_encodings + mov lr, #0 + add r4, r4, r6, lsl #3 ; a = vp8_coef_encodings + t + ldr r9, [r1, #tokenextra_context_tree] ; pp + + ldr r7, [r1, #tokenextra_skip_eob_node] + + ldr r6, [r4, #vp8_token_value] ; v + ldr r8, [r4, #vp8_token_len] ; n + + ; vp8 specific skip_eob_node + cmp r7, #0 + movne lr, #2 ; i = 2 + subne r8, r8, #1 ; --n + + rsb r4, r8, #32 ; 32-n + ldr r10, [sp, #60] ; vp8_coef_tree + + ; v is kept in r12 during the token pack loop + lsl r12, r6, r4 ; r12 = v << 32 - n + +; loop start +token_loop + ldrb r4, [r9, lr, asr #1] ; pp [i>>1] + sub r7, r5, #1 ; range-1 + + ; Decisions are made based on the bit value shifted + ; off of v, so set a flag here based on this. + ; This value is refered to as "bb" + lsls r12, r12, #1 ; bb = v >> n + mul r4, r4, r7 ; ((range-1) * pp[i>>1])) + + ; bb can only be 0 or 1. So only execute this statement + ; if bb == 1, otherwise it will act like i + 0 + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = vp8_coef_tree[i+bb] + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start +token_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq token_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] ; w->buffer[x] + add r10, r10, #1 + strb r10, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++] + + ; r10 is used earlier in the loop, but r10 is used as + ; temp variable here. So after r10 is used, reload + ; vp8_coef_tree_dcd into r10 + ldr r10, [sp, #60] ; vp8_coef_tree + +token_count_lt_zero + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r8, r8, #1 ; --n + bne token_loop + + ldr r6, [r1, #tokenextra_token] ; t + ldr r7, [sp, #8] ; vp8_extra_bits + ; Add t * sizeof (vp8_extra_bit_struct) to get the desired + ; element. Here vp8_extra_bit_struct == 20 + add r6, r6, r6, lsl #2 ; b = vp8_extra_bits + t + add r12, r7, r6, lsl #2 ; b = vp8_extra_bits + t + + ldr r4, [r12, #vp8_extra_bit_struct_base_val] + cmp r4, #0 + beq skip_extra_bits + +; if( b->base_val) + ldr r8, [r12, #vp8_extra_bit_struct_len] ; L + ldr lr, [r1, #tokenextra_extra] ; e = p->Extra + cmp r8, #0 ; if( L) + beq no_extra_bits + + ldr r9, [r12, #vp8_extra_bit_struct_prob] + asr r7, lr, #1 ; v=e>>1 + + ldr r10, [r12, #vp8_extra_bit_struct_tree] + str r10, [sp, #4] ; b->tree + + rsb r4, r8, #32 + lsl r12, r7, r4 + + mov lr, #0 ; i = 0 + +extra_bits_loop + ldrb r4, [r9, lr, asr #1] ; pp[i>>1] + sub r7, r5, #1 ; range-1 + lsls r12, r12, #1 ; v >> n + mul r4, r4, r7 ; (range-1) * pp[i>>1] + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = b->tree[i+bb] + add r4, r7, r4, lsr #8 ; split = 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + clz r6, r4 + sub r6, r6, #24 + + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi extra_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset= shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl extra_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos - 1 + b extra_zero_while_start +extra_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +extra_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq extra_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] + add r10, r10, #1 + strb r10, [r7, r4] +extra_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++]=(lowvalue >> (24-offset)) + ldr r10, [sp, #4] ; b->tree +extra_count_lt_zero + lsl r2, r2, r6 + + subs r8, r8, #1 ; --n + bne extra_bits_loop ; while (n) + +no_extra_bits + ldr lr, [r1, #4] ; e = p->Extra + add r4, r5, #1 ; range + 1 + tst lr, #1 + lsr r4, r4, #1 ; split = (range + 1) >> 1 + addne r2, r2, r4 ; lowvalue += split + subne r4, r5, r4 ; range = range-split + tst r2, #0x80000000 ; lowvalue & 0x80000000 + lsl r5, r4, #1 ; range <<= 1 + beq end_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] + mov r7, #0 + sub r4, r4, #1 + b end_zero_while_start +end_zero_while_loop + strb r7, [r6, r4] + sub r4, r4, #1 ; x-- +end_zero_while_start + cmp r4, #0 + ldrge r6, [r0, #vp8_writer_buffer] + ldrb r12, [r6, r4] + cmpge r12, #0xff + beq end_zero_while_loop + + ldr r6, [r0, #vp8_writer_buffer] + ldrb r7, [r6, r4] + add r7, r7, #1 + strb r7, [r6, r4] +end_high_bit_not_set + adds r3, r3, #1 ; ++count + lsl r2, r2, #1 ; lowvalue <<= 1 + bne end_count_zero + + ldr r4, [r0, #vp8_writer_pos] + mvn r3, #7 + ldr r7, [r0, #vp8_writer_buffer] + lsr r6, r2, #24 ; lowvalue >> 24 + add r12, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r12, [r0, #0x10] + strb r6, [r7, r4] +end_count_zero +skip_extra_bits + add r1, r1, #TOKENEXTRA_SZ ; ++p +check_p_lt_stop + ldr r4, [sp, #0] ; stop + cmp r1, r4 ; while( p < stop) + bcc while_p_lt_stop + + ldr r6, [sp, #12] ; mb_rows + ldr r7, [sp, #16] ; tokenlist address + subs r6, r6, #1 + add r7, r7, #TOKENLIST_SZ ; next element in the array + str r6, [sp, #12] + bne mb_row_loop + + str r2, [r0, #vp8_writer_lowvalue] + str r5, [r0, #vp8_writer_range] + str r3, [r0, #vp8_writer_count] + add sp, sp, #24 + pop {r4-r11, pc} + ENDP + +_VP8_COMP_common_ + DCD vp8_comp_common +_VP8_COMMON_MBrows_ + DCD vp8_common_mb_rows +_VP8_COMP_tplist_ + DCD vp8_comp_tplist + + END diff --git a/vp8/encoder/arm/armv5te/vp8_packtokens_partitions_armv5.asm b/vp8/encoder/arm/armv5te/vp8_packtokens_partitions_armv5.asm new file mode 100644 index 000000000..0835164e5 --- /dev/null +++ b/vp8/encoder/arm/armv5te/vp8_packtokens_partitions_armv5.asm @@ -0,0 +1,464 @@ +; +; Copyright (c) 2010 The WebM project authors. All Rights Reserved. +; +; Use of this source code is governed by a BSD-style license +; that can be found in the LICENSE file in the root of the source +; tree. An additional intellectual property rights grant can be found +; in the file PATENTS. All contributing project authors may +; be found in the AUTHORS file in the root of the source tree. +; + + + EXPORT |vp8cx_pack_tokens_into_partitions_armv5| + + INCLUDE vpx_vp8_enc_asm_offsets.asm + + ARM + REQUIRE8 + PRESERVE8 + + AREA |.text|, CODE, READONLY + +; r0 VP8_COMP *cpi +; r1 unsigned char *cx_data +; r2 int num_part +; r3 *size +; s0 vp8_coef_encodings +; s1 vp8_extra_bits, +; s2 const vp8_tree_index *, + +|vp8cx_pack_tokens_into_partitions_armv5| PROC + push {r4-r11, lr} + sub sp, sp, #44 + + ; Compute address of cpi->common.mb_rows + ldr r4, _VP8_COMP_common_ + ldr r6, _VP8_COMMON_MBrows_ + add r4, r0, r4 + + ldr r5, [r4, r6] ; load up mb_rows + + str r5, [sp, #36] ; save mb_rows + str r1, [sp, #24] ; save cx_data + str r2, [sp, #20] ; save num_part + str r3, [sp, #8] ; save *size + + ; *size = 3*(num_part -1 ); + sub r2, r2, #1 ; num_part - 1 + add r2, r2, r2, lsl #1 ; 3*(num_part - 1) + str r2, [r3] + + add r2, r2, r1 ; cx_data + *size + str r2, [sp, #40] ; ptr + + ldr r4, _VP8_COMP_tplist_ + add r4, r0, r4 + ldr r7, [r4, #0] ; dereference cpi->tp_list + str r7, [sp, #32] ; store start of cpi->tp_list + + ldr r11, _VP8_COMP_bc2_ ; load up vp8_writer out of cpi + add r0, r0, r11 + + mov r11, #0 + str r11, [sp, #28] ; i + +numparts_loop + ldr r10, [sp, #40] ; ptr + ldr r5, [sp, #36] ; move mb_rows to the counting section + str r5, [sp, #12] + + ; Reset all of the VP8 Writer data for each partition that + ; is processed. + ; start_encode + mov r2, #0 ; vp8_writer_lowvalue + mov r5, #255 ; vp8_writer_range + mvn r3, #23 ; vp8_writer_count + + str r2, [r0, #vp8_writer_value] + str r2, [r0, #vp8_writer_pos] + str r10, [r0, #vp8_writer_buffer] + +mb_row_loop + + ldr r1, [r7, #tokenlist_start] + ldr r9, [r7, #tokenlist_stop] + str r9, [sp, #0] ; save stop for later comparison + str r7, [sp, #16] ; tokenlist address for next time + + b check_p_lt_stop + + ; actual work gets done here! + +while_p_lt_stop + ldr r6, [r1, #tokenextra_token] ; t + ldr r4, [sp, #80] ; vp8_coef_encodings + mov lr, #0 + add r4, r4, r6, lsl #3 ; a = vp8_coef_encodings + t + ldr r9, [r1, #tokenextra_context_tree] ; pp + + ldr r7, [r1, #tokenextra_skip_eob_node] + + ldr r6, [r4, #vp8_token_value] ; v + ldr r8, [r4, #vp8_token_len] ; n + + ; vp8 specific skip_eob_node + cmp r7, #0 + movne lr, #2 ; i = 2 + subne r8, r8, #1 ; --n + + rsb r4, r8, #32 ; 32-n + ldr r10, [sp, #88] ; vp8_coef_tree + + ; v is kept in r12 during the token pack loop + lsl r12, r6, r4 ; r12 = v << 32 - n + +; loop start +token_loop + ldrb r4, [r9, lr, asr #1] ; pp [i>>1] + sub r7, r5, #1 ; range-1 + + ; Decisions are made based on the bit value shifted + ; off of v, so set a flag here based on this. + ; This value is refered to as "bb" + lsls r12, r12, #1 ; bb = v >> n + mul r4, r4, r7 ; ((range-1) * pp[i>>1])) + + ; bb can only be 0 or 1. So only execute this statement + ; if bb == 1, otherwise it will act like i + 0 + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = vp8_coef_tree[i+bb] + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start +token_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq token_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] ; w->buffer[x] + add r10, r10, #1 + strb r10, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++] + + ; r10 is used earlier in the loop, but r10 is used as + ; temp variable here. So after r10 is used, reload + ; vp8_coef_tree_dcd into r10 + ldr r10, [sp, #88] ; vp8_coef_tree + +token_count_lt_zero + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r8, r8, #1 ; --n + bne token_loop + + ldr r6, [r1, #tokenextra_token] ; t + ldr r7, [sp, #84] ; vp8_extra_bits + ; Add t * sizeof (vp8_extra_bit_struct) to get the desired + ; element. Here vp8_extra_bit_struct == 20 + add r6, r6, r6, lsl #2 ; b = vp8_extra_bits + t + add r12, r7, r6, lsl #2 ; b = vp8_extra_bits + t + + ldr r4, [r12, #vp8_extra_bit_struct_base_val] + cmp r4, #0 + beq skip_extra_bits + +; if( b->base_val) + ldr r8, [r12, #vp8_extra_bit_struct_len] ; L + ldr lr, [r1, #tokenextra_extra] ; e = p->Extra + cmp r8, #0 ; if( L) + beq no_extra_bits + + ldr r9, [r12, #vp8_extra_bit_struct_prob] + asr r7, lr, #1 ; v=e>>1 + + ldr r10, [r12, #vp8_extra_bit_struct_tree] + str r10, [sp, #4] ; b->tree + + rsb r4, r8, #32 + lsl r12, r7, r4 + + mov lr, #0 ; i = 0 + +extra_bits_loop + ldrb r4, [r9, lr, asr #1] ; pp[i>>1] + sub r7, r5, #1 ; range-1 + lsls r12, r12, #1 ; v >> n + mul r4, r4, r7 ; (range-1) * pp[i>>1] + addcs lr, lr, #1 ; i + bb + + mov r7, #1 + ldrsb lr, [r10, lr] ; i = b->tree[i+bb] + add r4, r7, r4, lsr #8 ; split = 1 + (((range-1) * pp[i>>1]) >> 8) + + addcs r2, r2, r4 ; if (bb) lowvalue += split + subcs r4, r5, r4 ; if (bb) range = range-split + + clz r6, r4 + sub r6, r6, #24 + + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi extra_count_lt_zero ; if(count >= 0) + + sub r6, r6, r3 ; offset= shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl extra_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos - 1 + b extra_zero_while_start +extra_zero_while_loop + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +extra_zero_while_start + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq extra_zero_while_loop + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] + add r10, r10, #1 + strb r10, [r7, r4] +extra_high_bit_not_set + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++]=(lowvalue >> (24-offset)) + ldr r10, [sp, #4] ; b->tree +extra_count_lt_zero + lsl r2, r2, r6 + + subs r8, r8, #1 ; --n + bne extra_bits_loop ; while (n) + +no_extra_bits + ldr lr, [r1, #4] ; e = p->Extra + add r4, r5, #1 ; range + 1 + tst lr, #1 + lsr r4, r4, #1 ; split = (range + 1) >> 1 + addne r2, r2, r4 ; lowvalue += split + subne r4, r5, r4 ; range = range-split + tst r2, #0x80000000 ; lowvalue & 0x80000000 + lsl r5, r4, #1 ; range <<= 1 + beq end_high_bit_not_set + + ldr r4, [r0, #vp8_writer_pos] + mov r7, #0 + sub r4, r4, #1 + b end_zero_while_start +end_zero_while_loop + strb r7, [r6, r4] + sub r4, r4, #1 ; x-- +end_zero_while_start + cmp r4, #0 + ldrge r6, [r0, #vp8_writer_buffer] + ldrb r12, [r6, r4] + cmpge r12, #0xff + beq end_zero_while_loop + + ldr r6, [r0, #vp8_writer_buffer] + ldrb r7, [r6, r4] + add r7, r7, #1 + strb r7, [r6, r4] +end_high_bit_not_set + adds r3, r3, #1 ; ++count + lsl r2, r2, #1 ; lowvalue <<= 1 + bne end_count_zero + + ldr r4, [r0, #vp8_writer_pos] + mvn r3, #7 + ldr r7, [r0, #vp8_writer_buffer] + lsr r6, r2, #24 ; lowvalue >> 24 + add r12, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r12, [r0, #0x10] + strb r6, [r7, r4] +end_count_zero +skip_extra_bits + add r1, r1, #TOKENEXTRA_SZ ; ++p +check_p_lt_stop + ldr r4, [sp, #0] ; stop + cmp r1, r4 ; while( p < stop) + bcc while_p_lt_stop + + ldr r10, [sp, #20] ; num_parts + mov r1, #TOKENLIST_SZ + mul r1, r10, r1 + + ldr r6, [sp, #12] ; mb_rows + ldr r7, [sp, #16] ; tokenlist address + subs r6, r6, r10 + add r7, r7, r1 ; next element in the array + str r6, [sp, #12] + bgt mb_row_loop + + mov r12, #32 + +stop_encode_loop + sub r7, r5, #1 ; range-1 + + mov r4, r7, lsl #7 ; ((range-1) * 128) + + mov r7, #1 + add r4, r7, r4, lsr #8 ; 1 + (((range-1) * 128) >> 8) + + ; Counting the leading zeros is used to normalize range. + clz r6, r4 + sub r6, r6, #24 ; shift + + ; Flag is set on the sum of count. This flag is used later + ; to determine if count >= 0 + adds r3, r3, r6 ; count += shift + lsl r5, r4, r6 ; range <<= shift + bmi token_count_lt_zero_se ; if(count >= 0) + + sub r6, r6, r3 ; offset = shift - count + sub r4, r6, #1 ; offset-1 + lsls r4, r2, r4 ; if((lowvalue<<(offset-1)) & 0x80000000 ) + bpl token_high_bit_not_set_se + + ldr r4, [r0, #vp8_writer_pos] ; x + sub r4, r4, #1 ; x = w->pos-1 + b token_zero_while_start_se +token_zero_while_loop_se + mov r10, #0 + strb r10, [r7, r4] ; w->buffer[x] =(unsigned char)0 + sub r4, r4, #1 ; x-- +token_zero_while_start_se + cmp r4, #0 + ldrge r7, [r0, #vp8_writer_buffer] + ldrb r11, [r7, r4] + cmpge r11, #0xff + beq token_zero_while_loop_se + + ldr r7, [r0, #vp8_writer_buffer] + ldrb r10, [r7, r4] ; w->buffer[x] + add r10, r10, #1 + strb r10, [r7, r4] ; w->buffer[x] + 1 +token_high_bit_not_set_se + rsb r4, r6, #24 ; 24-offset + ldr r10, [r0, #vp8_writer_buffer] + lsr r7, r2, r4 ; lowvalue >> (24-offset) + ldr r4, [r0, #vp8_writer_pos] ; w->pos + lsl r2, r2, r6 ; lowvalue <<= offset + mov r6, r3 ; shift = count + add r11, r4, #1 ; w->pos++ + bic r2, r2, #0xff000000 ; lowvalue &= 0xffffff + str r11, [r0, #vp8_writer_pos] + sub r3, r3, #8 ; count -= 8 + strb r7, [r10, r4] ; w->buffer[w->pos++] + +token_count_lt_zero_se + lsl r2, r2, r6 ; lowvalue <<= shift + + subs r12, r12, #1 + bne stop_encode_loop + + ldr r10, [sp, #8] ; *size + ldr r11, [r10] + ldr r4, [r0, #vp8_writer_pos] ; w->pos + add r11, r11, r4 ; *size += w->pos + str r11, [r10] + + ldr r9, [sp, #20] ; num_parts + sub r9, r9, #1 + ldr r10, [sp, #28] ; i + cmp r10, r9 ; if(i<(num_part - 1)) + bge skip_write_partition + + ldr r12, [sp, #40] ; ptr + add r12, r12, r4 ; ptr += w->pos + str r12, [sp, #40] + + ldr r9, [sp, #24] ; cx_data + mov r8, r4, asr #8 + strb r4, [r9, #0] + strb r8, [r9, #1] + mov r4, r4, asr #16 + strb r4, [r9, #2] + + add r9, r9, #3 ; cx_data += 3 + str r9, [sp, #24] + +skip_write_partition + + ldr r11, [sp, #28] ; i + ldr r10, [sp, #20] ; num_parts + + add r11, r11, #1 ; i++ + str r11, [sp, #28] + + ldr r7, [sp, #32] ; cpi->tp_list[i] + mov r1, #TOKENLIST_SZ + add r7, r7, r1 ; next element in cpi->tp_list + str r7, [sp, #32] ; cpi->tp_list[i+1] + + cmp r10, r11 + bgt numparts_loop + + + add sp, sp, #44 + pop {r4-r11, pc} + ENDP + +_VP8_COMP_common_ + DCD vp8_comp_common +_VP8_COMMON_MBrows_ + DCD vp8_common_mb_rows +_VP8_COMP_tplist_ + DCD vp8_comp_tplist +_VP8_COMP_bc2_ + DCD vp8_comp_bc2 + + END |