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我知道libJPEG不能读取整个图像,使用jpeg_read_scanlines.
libJPEG
jpeg_read_scanlines
libPNG有这样的机会吗?我只看到png_read_png方法。
libPNG
png_read_png
你看过 png_read_row()和png_read_rows()吗?
png_read_row()
png_read_rows()
请记住,如果 PNG 是隔行扫描的,这可能会带来麻烦。