rockbox/lib/rbcodec/codecs/libwmapro/wmaprodec.h
Cástor Muñoz 7442742208 iPod Classic: disable IRAM1
On Classic, IRAM1 (second 128Kb of a total of 256KB available IRAM) is
slower than DRAM. Codecs that actually are using regions of IRAM1 runs
faster when DRAM is used, so IRAM1 is disabled and only IRAM0 remains
enabled: 48KB for core and 80KB for codecs/plugins.

The next test_codec results shows how decode time is decreased:

file           boosted     unboosted
*.ra           ~1.5%       ~0.5%
*.mpc          ~21%        ~4.5%
*.ogg          ~0.5%       ~0%
nero_he*.m4a   ~8%         ~1%
nero*.m4a      ~25%        ~7%
wmapro*.wma    ~4.5%       ~0%
wma*.wma       ~25%        ~7%

In addition there is a small power save when IRAM1 HW is disabled.

Change-Id: I102adee11458e82037f23076d5d5956e23235de8
2018-07-30 18:50:27 -04:00

44 lines
1.7 KiB
C

#include "codeclib.h"
#include "wma.h"
#include "../libasf/asf.h"
#if (CONFIG_CPU == MCF5250)
/* Enough IRAM but performance suffers with ICODE_ATTR. */
#define IBSS_ATTR_WMAPRO_LARGE_IRAM IBSS_ATTR
#define ICODE_ATTR_WMAPRO_LARGE_IRAM
#define ICONST_ATTR_WMAPRO_LARGE_IRAM ICONST_ATTR
#define IBSS_ATTR_WMAPRO_VLC_TABLES
#define ICONST_ATTR_WMAPRO_WIN_VS_TMP
#elif (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == S5L8702)
/* Enough IRAM to move additional data and code to it. */
#define IBSS_ATTR_WMAPRO_LARGE_IRAM IBSS_ATTR
#define ICODE_ATTR_WMAPRO_LARGE_IRAM ICODE_ATTR
#define ICONST_ATTR_WMAPRO_LARGE_IRAM ICONST_ATTR
#define IBSS_ATTR_WMAPRO_VLC_TABLES
#define ICONST_ATTR_WMAPRO_WIN_VS_TMP
#elif (CONFIG_CPU == S5L8700) || (CONFIG_CPU == S5L8701)
/* Enough IRAM to move additional data and code to it. */
#define IBSS_ATTR_WMAPRO_LARGE_IRAM IBSS_ATTR
#define ICODE_ATTR_WMAPRO_LARGE_IRAM ICODE_ATTR
#define ICONST_ATTR_WMAPRO_LARGE_IRAM ICONST_ATTR
#define IBSS_ATTR_WMAPRO_VLC_TABLES IBSS_ATTR
#define ICONST_ATTR_WMAPRO_WIN_VS_TMP ICONST_ATTR
#else
/* Not enough IRAM available. */
#define IBSS_ATTR_WMAPRO_LARGE_IRAM
#define ICODE_ATTR_WMAPRO_LARGE_IRAM
#define ICONST_ATTR_WMAPRO_LARGE_IRAM
#define IBSS_ATTR_WMAPRO_VLC_TABLES
/* Models with large IRAM put tmp to IRAM rather than window coefficients as
* this is the fastest option. On models with smaller IRAM the 2nd-best option
* is to move the window coefficients to IRAM. */
#define ICONST_ATTR_WMAPRO_WIN_VS_TMP ICONST_ATTR
#endif
int decode_init(asf_waveformatex_t *wfx);
int decode_packet(asf_waveformatex_t *wfx,
int32_t *dec[2], int *data_size, void* pktdata, int size);