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avutil/tx_template: Don't waste space for inexistent factors 

It is possible to avoid the factors array for the power-of-two
tables for which said array is unused by using a different
structure for initialization for power-of-two tables than for
non-power-of-two-tables. This saves 3*15*16B from .data.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-10-22 14:23:07 +02:00
parent b71e2e42ef
commit 2af5f55b2e
1 changed files with 7 additions and 2 deletions
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9
libavutil/tx_template.c
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@ -55,9 +55,14 @@ TABLE_DEF( 9, 8);
typedef struct FFSRTabsInitOnce {
void (*func)(void);
AVOnce control;
int factors[TX_MAX_SUB]; /* Must be sorted high -> low */
} FFSRTabsInitOnce;
typedef struct FFSRTabsInitOnceExt {
void (*func)(void);
AVOnce control;
int factors[TX_MAX_SUB]; /* Must be sorted high -> low */
} FFSRTabsInitOnceExt;
#define INIT_FF_SR_TAB(len) \
static av_cold void TX_TAB(ff_tx_init_tab_ ##len)(void) \
{ \
@ -145,7 +150,7 @@ static av_cold void TX_TAB(ff_tx_init_tab_9)(void)
TX_TAB(ff_tx_tab_9)[7] = TX_TAB(ff_tx_tab_9)[3] - TX_TAB(ff_tx_tab_9)[4];
}
static FFSRTabsInitOnce nptwo_tabs_init_once[] = {
static FFSRTabsInitOnceExt nptwo_tabs_init_once[] = {
{ TX_TAB(ff_tx_init_tab_53), AV_ONCE_INIT, { 15, 5, 3 } },
{ TX_TAB(ff_tx_init_tab_9), AV_ONCE_INIT, { 9 } },
{ TX_TAB(ff_tx_init_tab_7), AV_ONCE_INIT, { 7 } },