len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-10-16 19:47:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

SPC Codec: Need to restore a bit more data from cached waves.

Browse source 
'Nuff said. Last update wasn't quite right.

Change-Id: I082a79c4e0c82b968fe2375cb82ee5c3a64a208b
This commit is contained in:
Michael Sevakis 2013-05-21 16:51:23 -04:00
parent de86b4a3c5
commit 1f76edabf9
2 changed files with 56 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

27
lib/rbcodec/codecs/libspc/spc_codec.h
View file

@ -272,18 +272,21 @@ enum state_t
state_release = 2
};
struct cache_entry_t
{
int16_t const* samples;
unsigned end; /* past-the-end position */
unsigned loop; /* number of samples in loop */
unsigned start_addr;
};
enum { BRR_BLOCK_SIZE = 16 };
enum { BRR_CACHE_SIZE = 0x20000 + 32};
#if SPC_BRRCACHE
struct cache_entry_t
{
int16_t const* samples; /* decoded samples (cached) */
unsigned end; /* past-the-end position (cached) */
unsigned loop; /* number of samples in loop (cached) */
uint16_t start_addr; /* RAM start address */
uint16_t loop_addr; /* RAM loop address */
uint8_t block_header; /* final wave block header */
};
enum { BRR_CACHE_SIZE = 0x20000 + 32};
struct voice_wave_t
{
int16_t const* samples; /* decoded samples in cache */
@ -291,7 +294,7 @@ struct voice_wave_t
long end; /* end position in samples buffer */
int loop; /* length of looping area */
unsigned block_header; /* header byte from current BRR block */
uint8_t const* addr; /* BRR waveform address in RAM */
unsigned start_addr; /* BRR waveform address in RAM */
unsigned loop_addr; /* Loop address in RAM */
};
#else /* !SPC_BRRCACHE */
@ -300,7 +303,7 @@ struct voice_wave_t
int16_t samples [3 + BRR_BLOCK_SIZE + 1]; /* last decoded block */
int32_t position; /* position in samples buffer, 12-bit frac */
unsigned block_header; /* header byte from current BRR block */
uint8_t const* addr; /* BRR waveform address in RAM */
unsigned start_addr; /* BRR waveform address in RAM */
};
#endif /* SPC_BRRCACHE */
@ -359,7 +362,7 @@ struct Spc_Dsp
#endif /* !SPC_NOECHO */
#if SPC_BRRCACHE
uint8_t oldsize;
unsigned oldsize;
struct cache_entry_t wave_entry [256];
struct cache_entry_t wave_entry_old [256];
#endif