drivers/media/usb/pwc/pwc-timon.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* Linux driver for Philips webcam
   3    (C) 2004-2006 Luc Saillard (luc@saillard.org)
   4
   5    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   6    driver and thus may have bugs that are not present in the original version.
   7    Please send bug reports and support requests to <luc@saillard.org>.
   8    The decompression routines have been implemented by reverse-engineering the
   9    Nemosoft binary pwcx module. Caveat emptor.
  10
  11 */
  12
  13
  14
  15 /* This tables contains entries for the 675/680/690 (Timon) camera, with
  16    4 different qualities (no compression, low, medium, high).
  17    It lists the bandwidth requirements for said mode by its alternate interface
  18    number. An alternate of 0 means that the mode is unavailable.
  19
  20    There are 6 * 4 * 4 entries:
  21      6 different resolutions subqcif, qsif, qcif, sif, cif, vga
  22      6 framerates: 5, 10, 15, 20, 25, 30
  23      4 compression modi: none, low, medium, high
  24
  25    When an uncompressed mode is not available, the next available compressed mode
  26    will be chosen (unless the decompressor is absent). Sometimes there are only
  27    1 or 2 compressed modes available; in that case entries are duplicated.
  28 */
  29
  30 #ifndef PWC_TIMON_H
  31 #define PWC_TIMON_H
  32
  33 #include "pwc.h"
  34
  35 #define PWC_FPS_MAX_TIMON 6
  36
  37 struct Timon_table_entry
  38 {
  39         char alternate;                 /* USB alternate interface */
  40         unsigned short packetsize;      /* Normal packet size */
  41         unsigned short bandlength;      /* Bandlength when decompressing */
  42         unsigned char mode[13];         /* precomputed mode settings for cam */
  43 };
  44
  45 extern const struct Timon_table_entry Timon_table[PSZ_MAX][PWC_FPS_MAX_TIMON][4];
  46 extern const unsigned int TimonRomTable [16][2][16][8];
  47 extern const unsigned int Timon_fps_vector[PWC_FPS_MAX_TIMON];
  48
  49 #endif
  50
  51