229     int bitDepth, encodedColorType;  in read_header()  local
230     png_get_IHDR(png_ptr, info_ptr, &origWidth, &origHeight, &bitDepth,  in read_header()
234         *bitDepthPtr = bitDepth;  in read_header()
240     if (bitDepth == 16) {  in read_header()
254             if (bitDepth < 8) {  in read_header()
276             if (bitDepth < 8) {  in read_header()
333                        png_structp png_ptr, png_infop info_ptr, int bitDepth, int numberPasses)  in SkPngCodec()  argument
340     , fBitDepth(bitDepth)  in SkPngCodec()
544             SkPngChunkReader* chunkReader, png_structp png_ptr, png_infop info_ptr, int bitDepth)  in SkPngScanlineDecoder()  argument
545         : INHERITED(srcInfo, stream, chunkReader, png_ptr, info_ptr, bitDepth, 1)  in SkPngScanlineDecoder()
610             int bitDepth, int numberPasses)  in SkPngInterlacedScanlineDecoder()  argument
611         : INHERITED(srcInfo, stream, chunkReader, png_ptr, info_ptr, bitDepth, numberPasses)  in SkPngInterlacedScanlineDecoder()
734     int bitDepth;  in NewFromStream()  local
737     if (!read_header(stream, chunkReader, &png_ptr, &info_ptr, &imageInfo, &bitDepth,  in NewFromStream()
744                                         png_ptr, info_ptr, bitDepth);  in NewFromStream()
748                                               png_ptr, info_ptr, bitDepth, numberPasses);  in NewFromStream()