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| author | Michael Giacomelli <giac2000@hotmail.com> | 2012-05-20 02:31:24 -0400 |
|---|---|---|
| committer | Michael Giacomelli <giac2000@hotmail.com> | 2012-05-20 02:31:24 -0400 |
| commit | dd61978070a769b7bf6baee630be27f9f04bffc5 (patch) | |
| tree | d7e8dbdba256449e93efa5a9240f7f883d57a1ac /lib | |
| parent | b154e511681e040ee34c79a67221a2910ee623aa (diff) | |
| download | rockbox-dd61978070a769b7bf6baee630be27f9f04bffc5.zip rockbox-dd61978070a769b7bf6baee630be27f9f04bffc5.tar.gz rockbox-dd61978070a769b7bf6baee630be27f9f04bffc5.tar.bz2 rockbox-dd61978070a769b7bf6baee630be27f9f04bffc5.tar.xz | |
Expand the range of the inverse quant table in WMA Pro.
Several of the problem samples on the tracker use values outside this
range. Trying the larger table doesn't quite seem to fix things, but
its only a small amount of additional memory and looking at ffmpeg,
I think the larger table is correct.
Change-Id: Id046e62b68550701aa1f80c9abd0a1dcd711bd0d
Diffstat (limited to 'lib')
| -rwxr-xr-x[-rw-r--r--] | lib/rbcodec/codecs/libwmapro/quant.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/lib/rbcodec/codecs/libwmapro/quant.h b/lib/rbcodec/codecs/libwmapro/quant.h index 3500615..8ec7459 100644..100755 --- a/lib/rbcodec/codecs/libwmapro/quant.h +++ b/lib/rbcodec/codecs/libwmapro/quant.h @@ -8,8 +8,21 @@ * floating point value is : * quant = pow(10.0, exp/20) * 'exp' is an integer value which I have exmerimentally found to fall in the - * range (50,170). */ -const int32_t quant_tab[121] = { + * range (0,170). */ +const int32_t quant_tab[171] = { + 0x00000001, 0x00000001, + 0x00000001, 0x00000001, 0x00000002, 0x00000002, + 0x00000002, 0x00000002, 0x00000003, 0x00000003, + 0x00000003, 0x00000004, 0x00000004, 0x00000004, + 0x00000005, 0x00000006, 0x00000006, 0x00000007, + 0x00000008, 0x00000009, 0x0000000a, 0x0000000b, + 0x0000000d, 0x0000000e, 0x00000010, 0x00000012, + 0x00000014, 0x00000016, 0x00000019, 0x0000001c, + 0x00000020, 0x00000023, 0x00000028, 0x0000002d, + 0x00000032, 0x00000038, 0x0000003f, 0x00000047, + 0x0000004f, 0x00000059, 0x00000064, 0x00000070, + 0x0000007e, 0x0000008d, 0x0000009e, 0x000000b2, + 0x000000c8, 0x000000e0, 0x000000fb, 0x0000011a, 0x0000013C, 0x00000163, 0x0000018E, 0x000001BF, 0x000001F5, 0x00000232, 0x00000277, 0x000002C4, 0x0000031A, 0x0000037B, 0x000003E8, 0x00000462, @@ -43,7 +56,7 @@ const int32_t quant_tab[121] = { 0x12D940B6 }; -#define EXP_MIN 50 +#define EXP_MIN 0 #define EXP_MAX 170 /* return the correct value of quant based on exp */ |