src/swf_header.c

   1 /*
   2   +----------------------------------------------------------------------+
   3   | Author: yoya@awm.jp                                                  |
   4   +----------------------------------------------------------------------+
   5 */
   6
   7 #include <stdio.h>
   8 #include "swf_define.h"
   9 #include "swf_header.h"
  10
  11 int
  12 swf_header_parse(bitstream_t *bs, swf_header_t *header) {
  13     bitstream_getstring(bs, header->magic, 3);
  14     header->version = bitstream_getbyte(bs);
  15     header->file_length = bitstream_getbytesLE(bs, 4);
  16     return 0;
  17 }
  18
  19 int
  20 swf_header_build(bitstream_t *bs, swf_header_t *header) {
  21     if (bitstream_putstring(bs, header->magic, 3)) {
  22         return 1;
  23     }
  24     if (bitstream_putbyte(bs, header->version)) {
  25         return 1;
  26     }
  27     if (bitstream_putbytesLE(bs, header->file_length, 4)) {
  28         return 1;
  29     }
  30     return 0;
  31 }
  32
  33 int
  34 swf_header_movie_parse(bitstream_t *bs,
  35                            swf_header_movie_t *header_movie) {
  36     swf_rect_parse(bs, &header_movie->frame_size);
  37     header_movie->frame_rate_decimal = bitstream_getbyte(bs);
  38     header_movie->frame_rate_integral = bitstream_getbyte(bs);
  39     header_movie->frame_count = bitstream_getbytesLE(bs, 2);
  40     return 0;
  41 }
  42
  43 int
  44 swf_header_movie_build(bitstream_t *bs,
  45                            swf_header_movie_t *header_movie) {
  46     swf_rect_build(bs, &header_movie->frame_size);
  47     bitstream_putbyte(bs, header_movie->frame_rate_decimal);
  48     bitstream_putbyte(bs, header_movie->frame_rate_integral);
  49     bitstream_putbytesLE(bs, header_movie->frame_count, 2);
  50     return 0;
  51 }
  52
  53 int swf_header_print(swf_header_t *header) {
  54     printf("magic=%s  version=%d  file_length=%lu\n",
  55            header->magic, header->version, header->file_length);
  56     return 0;
  57 }
  58
  59 int swf_header_movie_print(swf_header_movie_t *header_movie) {
  60     swf_rect_print(&header_movie->frame_size, 0);
  61     printf("frame_rate=%d.%d  frame_count=%d\n",
  62            header_movie->frame_rate_integral,
  63            header_movie->frame_rate_decimal,
  64            header_movie->frame_count);
  65     return 0;
  66 }