util.h

   1 /*-
   2  * Copyright (C) 2011, 2012 glevand <geoffrey.levand@mail.ru>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #ifndef _UTIL_H
  30 #define _UTIL_H
  31
  32 static inline void
  33 memset32(void *buf, uint32_t val, int word_count)
  34 {
  35         uint32_t *ptr = buf;
  36
  37         while (word_count--)
  38                 *ptr++ = val;
  39 }
  40
  41 static inline uint32_t
  42 get_channel_id(const volatile void *driver_info)
  43 {
  44         return (*(uint32_t *) ((uint8_t *) driver_info + 0xc));
  45 }
  46
  47 /*
  48  * How to convert image to JPG format:
  49  *
  50  * convert -depth 8 -size 1920x1080 rgba:image.argb \
  51  *    -color-matrix "0 1 0 0, 0 0 1 0, 0 0 0 1, 1 0 0 0" \
  52  *    -alpha off -background black -flatten image.jpg
  53  */
  54 int save_image(const char *filename, const char *buf, int len);
  55
  56 int transfer_data(uint32_t *fifo, uint32_t src, uint32_t dst,
  57     uint32_t dst_offset, int32_t dst_pitch, uint32_t src_offset, int32_t src_pitch,
  58     uint32_t row_length, uint32_t row_count);
  59
  60 int
  61 transfer_inline(uint32_t *fifo, uint32_t dst, uint32_t dst_offset,
  62     const uint32_t *data, uint32_t word_count);
  63
  64 int
  65 flip_display_buffer(uint32_t *fifo, uint8_t channel_id, uint8_t buffer_id,
  66     uint8_t head);
  67
  68 #endif