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Expand the range of the inverse quant table in WMA Pro.

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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
This commit is contained in:
Michael Giacomelli 2012-05-20 02:31:24 -04:00
parent b154e51168
commit dd61978070
1 changed files with 16 additions and 3 deletions
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19
lib/rbcodec/codecs/libwmapro/quant.h Normal file → Executable file
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@ -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 */