857 case JPEG.ADOBE_UNKNOWN:
858 if (numChannels == 3) {
859 csType.setAttribute("name", "RGB");
860 } else if (numChannels == 4) {
861 csType.setAttribute("name", "CMYK");
862 }
863 break;
864 }
865 return chroma;
866 }
867
868 // Neither marker. Check components
869 if (numChannels < 3) {
870 csType.setAttribute("name", "GRAY");
871 if (numChannels == 2) {
872 hasAlpha = true;
873 }
874 return chroma;
875 }
876
877 boolean idsAreJFIF = true;
878
879 for (int i = 0; i < sof.componentSpecs.length; i++) {
880 int id = sof.componentSpecs[i].componentId;
881 if ((id < 1) || (id >= sof.componentSpecs.length)) {
882 idsAreJFIF = false;
883 }
884 }
885
886 if (idsAreJFIF) {
887 csType.setAttribute("name", "YCbCr");
888 if (numChannels == 4) {
889 hasAlpha = true;
890 }
891 return chroma;
892 }
893
894 // Check against the letters
895 if ((sof.componentSpecs[0].componentId == 'R')
896 && (sof.componentSpecs[1].componentId == 'G')
897 && (sof.componentSpecs[2].componentId == 'B')){
898
899 csType.setAttribute("name", "RGB");
900 if ((numChannels == 4)
901 && (sof.componentSpecs[3].componentId == 'A')) {
902 hasAlpha = true;
903 }
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857 case JPEG.ADOBE_UNKNOWN:
858 if (numChannels == 3) {
859 csType.setAttribute("name", "RGB");
860 } else if (numChannels == 4) {
861 csType.setAttribute("name", "CMYK");
862 }
863 break;
864 }
865 return chroma;
866 }
867
868 // Neither marker. Check components
869 if (numChannels < 3) {
870 csType.setAttribute("name", "GRAY");
871 if (numChannels == 2) {
872 hasAlpha = true;
873 }
874 return chroma;
875 }
876
877 boolean idsAreJFIF = false;
878
879 int cid0 = sof.componentSpecs[0].componentId;
880 int cid1 = sof.componentSpecs[1].componentId;
881 int cid2 = sof.componentSpecs[2].componentId;
882 if ((cid0 == 1) && (cid1 == 2) && (cid2 == 3)) {
883 idsAreJFIF = true;
884 }
885
886 if (idsAreJFIF) {
887 csType.setAttribute("name", "YCbCr");
888 if (numChannels == 4) {
889 hasAlpha = true;
890 }
891 return chroma;
892 }
893
894 // Check against the letters
895 if ((sof.componentSpecs[0].componentId == 'R')
896 && (sof.componentSpecs[1].componentId == 'G')
897 && (sof.componentSpecs[2].componentId == 'B')){
898
899 csType.setAttribute("name", "RGB");
900 if ((numChannels == 4)
901 && (sof.componentSpecs[3].componentId == 'A')) {
902 hasAlpha = true;
903 }
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