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swscale/swscale: Get rid of the SWS_GAMMA_CORRECT flag 

This avoids using up a bit of the public flags

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-04-23 20:13:58 +02:00
parent 2a7128f4ed
commit b57f9f5724
4 changed files with 11 additions and 15 deletions
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2
libswscale/swscale.c
View File

@ -369,7 +369,7 @@ static int swscale(SwsContext *c, const uint8_t *src[],
int chrBufIndex = c->chrBufIndex;
int lastInLumBuf = c->lastInLumBuf;
int lastInChrBuf = c->lastInChrBuf;
int perform_gamma = c->flags & SWS_GAMMA_CORRECT;
int perform_gamma = c->is_internal_gamma;
if (!usePal(c->srcFormat)) {

1
libswscale/swscale.h
View File

@ -64,7 +64,6 @@ const char *swscale_license(void);
#define SWS_SINC 0x100
#define SWS_LANCZOS 0x200
#define SWS_SPLINE 0x400
#define SWS_GAMMA_CORRECT 0x800
#define SWS_SRC_V_CHR_DROP_MASK 0x30000
#define SWS_SRC_V_CHR_DROP_SHIFT 16

1
libswscale/swscale_internal.h
View File

@ -315,6 +315,7 @@ typedef struct SwsContext {
double gamma_value;
int gamma_flag;
int is_internal_gamma;
uint16_t *gamma;
uint16_t *inv_gamma;

22
libswscale/utils.c
View File

@ -1256,6 +1256,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
if (!unscaled && c->gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
SwsContext *c2;
c->cascaded_context[0] = NULL;
ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride,
@ -1272,11 +1273,18 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt,
dstW, dstH, tmpFmt,
flags | SWS_GAMMA_CORRECT, srcFilter, dstFilter, c->param);
flags, srcFilter, dstFilter, c->param);
if (!c->cascaded_context[1])
return -1;
c2 = c->cascaded_context[1];
c2->is_internal_gamma = 1;
c2->gamma = alloc_gamma_tbl( c->gamma_value);
c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
if (!c2->gamma || !c2->inv_gamma)
return AVERROR(ENOMEM);
c->cascaded_context[2] = NULL;
if (dstFormat != tmpFmt) {
ret = av_image_alloc(c->cascaded1_tmp, c->cascaded1_tmpStride,
@ -1293,18 +1301,6 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
return 0;
}
c->gamma = NULL;
c->inv_gamma = NULL;
if (c->flags & SWS_GAMMA_CORRECT) {
c->gamma = alloc_gamma_tbl(c->gamma_value);
if (!c->gamma)
return AVERROR(ENOMEM);
c->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value);
if (!c->inv_gamma) {
return AVERROR(ENOMEM);
}
}
if (isBayer(srcFormat)) {
if (!unscaled ||
(dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P)) {