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Basic optimizations of the Vorbis decoder for the ihp-1x0.

Browse source 
Capable of real-time decoding with cpu freq at 120mhz.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6527 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Pedro Vasconcelos 2005-05-27 09:14:00 +00:00
parent 3841348930
commit 024db0a766
22 changed files with 428 additions and 107 deletions
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10
apps/codecs/Tremor/lsp_lookup.h
View file

@ -26,7 +26,7 @@
#define FROMdB2_SHIFT 3
#define FROMdB2_MASK 31
static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={
static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ] ={
0x003fffff, 0x0028619b, 0x00197a96, 0x0010137a,
0x000a24b0, 0x00066666, 0x000409c3, 0x00028c42,
0x00019b8c, 0x000103ab, 0x0000a3d7, 0x00006760,
@ -37,7 +37,7 @@ static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={
0x0000000b, 0x00000007, 0x00000004, 0x00000003,
0x00000002, 0x00000001, 0x00000001};
static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ] ={
0x000001fc, 0x000001f5, 0x000001ee, 0x000001e7,
0x000001e0, 0x000001d9, 0x000001d2, 0x000001cc,
0x000001c5, 0x000001bf, 0x000001b8, 0x000001b2,
@ -50,7 +50,7 @@ static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
#define INVSQ_LOOKUP_I_SHIFT 10
#define INVSQ_LOOKUP_I_MASK 1023
static const long INVSQ_LOOKUP_I[64+1]={
static const long INVSQ_LOOKUP_I[64+1] ={
92682, 91966, 91267, 90583,
89915, 89261, 88621, 87995,
87381, 86781, 86192, 85616,
@ -70,7 +70,7 @@ static const long INVSQ_LOOKUP_I[64+1]={
65536,
};
static const long INVSQ_LOOKUP_IDel[64]={
static const long INVSQ_LOOKUP_IDel[64] ={
716, 699, 684, 668,
654, 640, 626, 614,
600, 589, 576, 565,
@ -92,7 +92,7 @@ static const long INVSQ_LOOKUP_IDel[64]={
#define COS_LOOKUP_I_SHIFT 9
#define COS_LOOKUP_I_MASK 511
#define COS_LOOKUP_I_SZ 128
static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={
static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1] ={
16384, 16379, 16364, 16340,
16305, 16261, 16207, 16143,
16069, 15986, 15893, 15791,