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author | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-11-10 07:16:04 +0000 |
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committer | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-11-10 07:16:04 +0000 |
commit | de0fcc35000819bccbd33715acf7e0a91cc5687b (patch) | |
tree | 7f28732629b4981573efbd278c7287f2a32b2814 | |
parent | 92c38a728e93bf36a4dc5313d634d0627a84dc9e (diff) | |
download | rockbox-de0fcc35000819bccbd33715acf7e0a91cc5687b.tar.gz rockbox-de0fcc35000819bccbd33715acf7e0a91cc5687b.zip |
Introduce macros to ARM asm atrac3 filterbank for better readability.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28546 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r-- | apps/codecs/libatrac/atrac3_arm.S | 150 |
1 files changed, 48 insertions, 102 deletions
diff --git a/apps/codecs/libatrac/atrac3_arm.S b/apps/codecs/libatrac/atrac3_arm.S index 0dacff0b7c..68f8de2c4e 100644 --- a/apps/codecs/libatrac/atrac3_arm.S +++ b/apps/codecs/libatrac/atrac3_arm.S | |||
@@ -93,6 +93,47 @@ atrac3_iqmf_matrixing: | |||
93 | * } | 93 | * } |
94 | * Note: r12 is a scratch register and can be used without restorage. | 94 | * Note: r12 is a scratch register and can be used without restorage. |
95 | ****************************************************************************/ | 95 | ****************************************************************************/ |
96 | |||
97 | /* To be called as first block to call smull for initial filling of the result | ||
98 | * registers lr/r9 and r12/r8. */ | ||
99 | #define DEWIN_8_SAMPLES_MUL_ASM \ | ||
100 | ldmia r2!, {r4, r5}; /* load win[0..1] */ \ | ||
101 | ldmia r1!, {r6, r7}; /* load in [0..1] */ \ | ||
102 | smull lr , r9, r4, r6; /* s1 = win[0] * in[0] */ \ | ||
103 | smull r12, r8, r5, r7; /* s2 = win[1] * in[1] */ \ | ||
104 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
105 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
106 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
107 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ \ | ||
108 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
109 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
110 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
111 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ \ | ||
112 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
113 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
114 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
115 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ | ||
116 | |||
117 | /* Called after first block. Will always multiply-add to the result registers | ||
118 | * lr/r9 and r12/r8. */ | ||
119 | #define DEWIN_8_SAMPLES_MLA_ASM \ | ||
120 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
121 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
122 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
123 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ \ | ||
124 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
125 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
126 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
127 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ \ | ||
128 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
129 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
130 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
131 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ \ | ||
132 | ldmia r2!, {r4, r5}; /* load win[i..i+1] */ \ | ||
133 | ldmia r1!, {r6, r7}; /* load in [i..i+1] */ \ | ||
134 | smlal lr , r9, r4, r6; /* s1 = win[i ] * in[i ] */ \ | ||
135 | smlal r12, r8, r5, r7; /* s2 = win[i+1] * in[i+1] */ | ||
136 | |||
96 | .align 2 | 137 | .align 2 |
97 | .global atrac3_iqmf_dewindowing | 138 | .global atrac3_iqmf_dewindowing |
98 | .type atrac3_iqmf_dewindowing, %function | 139 | .type atrac3_iqmf_dewindowing, %function |
@@ -105,108 +146,13 @@ atrac3_iqmf_dewindowing: | |||
105 | stmfd sp!, {r4-r9, lr} /* save non-scratch registers */ | 146 | stmfd sp!, {r4-r9, lr} /* save non-scratch registers */ |
106 | 147 | ||
107 | .iqmf_dewindow_outer_loop: /* outer loop 0...counter-1 */ | 148 | .iqmf_dewindow_outer_loop: /* outer loop 0...counter-1 */ |
108 | /* 0.. 7 */ | 149 | |
109 | ldmia r2!, {r4, r5} /* load win[0..1] */ | 150 | DEWIN_8_SAMPLES_MUL_ASM /* 0.. 7, use "MUL" macro here! */ |
110 | ldmia r1!, {r6, r7} /* load in[0..1] */ | 151 | DEWIN_8_SAMPLES_MLA_ASM /* 8..15 */ |
111 | smull lr , r9, r4, r6 /* s1 = win[0] * in[0] */ | 152 | DEWIN_8_SAMPLES_MLA_ASM /* 16..23 */ |
112 | smull r12, r8, r5, r7 /* s2 = win[1] * in[1] */ | 153 | DEWIN_8_SAMPLES_MLA_ASM /* 24..31 */ |
113 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | 154 | DEWIN_8_SAMPLES_MLA_ASM /* 32..39 */ |
114 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | 155 | DEWIN_8_SAMPLES_MLA_ASM /* 40..47 */ |
115 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
116 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
117 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
118 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
119 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
120 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
121 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
122 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
123 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
124 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
125 | /* 8..15 */ | ||
126 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
127 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
128 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
129 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
130 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
131 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
132 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
133 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
134 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
135 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
136 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
137 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
138 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
139 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
140 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
141 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
142 | /* 16..23 */ | ||
143 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
144 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
145 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
146 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
147 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
148 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
149 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
150 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
151 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
152 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
153 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
154 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
155 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
156 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
157 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
158 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
159 | /* 24..31 */ | ||
160 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
161 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
162 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
163 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
164 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
165 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
166 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
167 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
168 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
169 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
170 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
171 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
172 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
173 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
174 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
175 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
176 | /* 32..39 */ | ||
177 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
178 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
179 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
180 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
181 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
182 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
183 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
184 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
185 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
186 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
187 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
188 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
189 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
190 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
191 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
192 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
193 | /* 40..47 */ | ||
194 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
195 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
196 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
197 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
198 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
199 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
200 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
201 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
202 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
203 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
204 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
205 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
206 | ldmia r2!, {r4, r5} /* load win[i...i+1] */ | ||
207 | ldmia r1!, {r6, r7} /* load in[i...i+1] */ | ||
208 | smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ | ||
209 | smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ | ||
210 | 156 | ||
211 | mov lr , lr , lsr #31 | 157 | mov lr , lr , lsr #31 |
212 | orr r9, lr , r9, lsl #1 /* s1 = low>>31 || hi<<1 */ | 158 | orr r9, lr , r9, lsl #1 /* s1 = low>>31 || hi<<1 */ |