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swscale/utils: Detect and skip unneeded sws_setColorspaceDetails() calls 

This avoids running various table inits unnecessarily

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cc538e9dbd)

Conflicts:

	libswscale/utils.c
This commit is contained in:
Michael Niedermayer 2016-01-14 15:11:48 +01:00
parent f0cc6f74fc
commit 119659b759
1 changed files with 18 additions and 4 deletions
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22
libswscale/utils.c
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@ -829,8 +829,6 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
const AVPixFmtDescriptor *desc_dst;
const AVPixFmtDescriptor *desc_src;
int need_reinit = 0;
memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
handle_formats(c);
desc_dst = av_pix_fmt_desc_get(c->dstFormat);
@ -841,11 +839,24 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
if(!isYUV(c->srcFormat) && !isGray(c->srcFormat))
srcRange = 0;
if (c->srcRange != srcRange ||
c->dstRange != dstRange ||
c->brightness != brightness ||
c->contrast != contrast ||
c->saturation != saturation ||
memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) ||
memcmp(c->dstColorspaceTable, table, sizeof(int) * 4)
)
need_reinit = 1;
memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4);
memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
c->brightness = brightness;
c->contrast = contrast;
c->saturation = saturation;
if (c->srcRange != srcRange || c->dstRange != dstRange)
need_reinit = 1;
c->srcRange = srcRange;
c->dstRange = dstRange;
@ -860,6 +871,9 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
if (!need_reinit)
return 0;
if (!isYUV(c->dstFormat) && !isGray(c->dstFormat)) {
ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
contrast, saturation);