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int | compression |
| The type of compression used on the wire.
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uint32_t | image_width |
| The width of the current page, in pixels.
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uint32_t | image_length |
| The length of the current page, in pixels.
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int | x_resolution |
| Column-to-column (X) resolution in pixels per metre.
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int | y_resolution |
| Row-to-row (Y) resolution in pixels per metre.
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const char * | vendor |
| The vendor of the machine which produced the file.
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const char * | model |
| The model of machine which produced the file.
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const char * | far_ident |
| The remote end's ident string.
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const char * | sub_address |
| The FAX sub-address.
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const char * | dcs |
| The FAX DCS information, as an ASCII hex string.
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T.4 FAX decompression metadata descriptor. This contains information about the image which may be relevant to the backend, but is not relevant to the image decoding process.