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Name parametric gamma curve types

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BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2041753004

Review-Url: https://codereview.chromium.org/2041753004
This commit is contained in:
msarett 2016-06-06 07:26:39 -07:00 committed by Commit bot
parent 55fdcccf01
commit 64d31430e0
1 changed files with 13 additions and 5 deletions
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18
src/core/SkColorSpace.cpp
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@ -484,9 +484,17 @@ bool load_gammas(SkGammaCurve* gammas, uint32_t numGammas, const uint8_t* src, s
break;
}
case kTAG_ParaCurveType: {
enum ParaCurveType {
kExponential_ParaCurveType = 0,
kGAB_ParaCurveType = 1,
kGABC_ParaCurveType = 2,
kGABDE_ParaCurveType = 3,
kGABCDEF_ParaCurveType = 4,
};
// Determine the format of the parametric curve tag.
uint16_t format = read_big_endian_short(src + 8);
if (0 == format) {
if (kExponential_ParaCurveType == format) {
tagBytes = 12 + 4;
if (len < tagBytes) {
SkColorSpacePrintf("gamma tag is too small (%d bytes)", len);
@ -506,7 +514,7 @@ bool load_gammas(SkGammaCurve* gammas, uint32_t numGammas, const uint8_t* src, s
// We will fill in with zeros as necessary to always match the above form.
float g = 0.0f, a = 0.0f, b = 0.0f, c = 0.0f, d = 0.0f, e = 0.0f, f = 0.0f;
switch(format) {
case 1: {
case kGAB_ParaCurveType: {
tagBytes = 12 + 12;
if (len < tagBytes) {
SkColorSpacePrintf("gamma tag is too small (%d bytes)", len);
@ -521,7 +529,7 @@ bool load_gammas(SkGammaCurve* gammas, uint32_t numGammas, const uint8_t* src, s
d = -b / a;
break;
}
case 2:
case kGABC_ParaCurveType:
tagBytes = 12 + 16;
if (len < tagBytes) {
SkColorSpacePrintf("gamma tag is too small (%d bytes)", len);
@ -537,7 +545,7 @@ bool load_gammas(SkGammaCurve* gammas, uint32_t numGammas, const uint8_t* src, s
d = -b / a;
f = c;
break;
case 3:
case kGABDE_ParaCurveType:
tagBytes = 12 + 20;
if (len < tagBytes) {
SkColorSpacePrintf("gamma tag is too small (%d bytes)", len);
@ -552,7 +560,7 @@ bool load_gammas(SkGammaCurve* gammas, uint32_t numGammas, const uint8_t* src, s
d = SkFixedToFloat(read_big_endian_int(src + 28));
e = SkFixedToFloat(read_big_endian_int(src + 24));
break;
case 4:
case kGABCDEF_ParaCurveType:
tagBytes = 12 + 28;
if (len < tagBytes) {
SkColorSpacePrintf("gamma tag is too small (%d bytes)", len);