static int generate_from_avi(const char *aviname)
{
UINT32 line12 = 0, line13 = 0, line14 = 0, framenum = 0, chapternum = 0;
const avi_movie_info *info;
bitmap_t *bitmap;
avi_error avierr;
avi_file *avi;
int white = 0;
int frame;
/* open the file */
avierr = avi_open(aviname, &avi);
if (avierr != AVIERR_NONE)
{
fprintf(stderr, "Error opening AVI file: %s\n", avi_error_string(avierr));
return 1;
}
/* extract movie info */
info = avi_get_movie_info(avi);
fprintf(stderr, "%dx%d - %d frames total\n", info->video_width, info->video_height, info->video_numsamples);
if (info->video_height != 39)
{
fprintf(stderr, "Unknown VANC capture format: expected 39 rows\n");
return 1;
}
/* allocate a bitmap to hold it */
bitmap = bitmap_alloc(info->video_width, info->video_height, BITMAP_FORMAT_YUY16);
if (bitmap == NULL)
{
fprintf(stderr, "Out of memory allocating %dx%d bitmap\n", info->video_width, info->video_height);
return 1;
}
/* loop over frames */
for (frame = 0; frame < info->video_numsamples; frame++)
{
int field;
UINT8 bits[24];
/* read the frame */
avierr = avi_read_video_frame_yuy16(avi, frame, bitmap);
if (avierr != AVIERR_NONE)
{
fprintf(stderr, "Error reading AVI frame %d: %s\n", frame, avi_error_string(avierr));
break;
}
/* loop over two fields */
for (field = 0; field < 2; field++)
{
int prevwhite = white;
int i;
/* line 7 contains the white flag */
white = 0;
if (*BITMAP_ADDR16(bitmap, 20 * field + 7, bitmap->width / 2) > 0x8000)
white = 1;
/* output metadata for *previous* field */
if (frame > 0 || field > 0)
{
int flags = 0;
if (!prevwhite) flags |= 0x01;
if (!white) flags |= 0x02;
output_meta(flags, prevwhite, line12, line13, line14, framenum, chapternum);
}
/* line 12 contains stop code and other interesting bits */
line12 = 0;
if (parse_line(bitmap, 20 * field + 12, 24, bits) == 24)
for (i = 0; i < 24; i++)
line12 = (line12 << 1) | bits[i];
/* line 13 and 14 contain frame/chapter/lead in/out encodings */
line13 = 0;
if (parse_line(bitmap, 20 * field + 13, 24, bits) == 24)
for (i = 0; i < 24; i++)
line13 = (line13 << 1) | bits[i];
line14 = 0;
if (parse_line(bitmap, 20 * field + 14, 24, bits) == 24)
for (i = 0; i < 24; i++)
line14 = (line14 << 1) | bits[i];
/* the two lines must match */
// if (line13 != 0 && line14 != 0 && line13 != line14)
// line13 = line14 = 0;
/* is this a frame number? */
if ((line13 & 0xf00000) == 0xf00000)
framenum = line13 & 0x7ffff;
if ((line13 & 0xf00fff) == 0x800ddd)
chapternum = (line13 >> 12) & 0x7f;
}
}
/* output metadata for *previous* field */
{
int flags = 0;
if (!white) flags |= 0x01;
output_meta(flags, white, line12, line13, line14, framenum, chapternum);
}
bitmap_free(bitmap);
return 0;
}
static int generate_from_pattern(pattern_data *pattern, int patcount)
{
pattern_data *curpat = pattern;
int framenum = 0, bcdframenum = 0;
/* loop until we exceed the pattern frame count */
while (1)
{
UINT32 line16, line17, line18;
int flags = 0;
/* handle special codes for line 16 */
line16 = curpat->line16;
if (line16 == INSERT_FRAME_CODE_INC)
{
framenum++;
bcdframenum = (((framenum / 10000) % 10) << 16) | (((framenum / 1000) % 10) << 12) | (((framenum / 100) % 10) << 8) | (((framenum / 10) % 10) << 4) | (framenum % 10);
}
if (line16 == INSERT_FRAME_CODE || line16 == INSERT_FRAME_CODE_INC)
line16 = 0xf80000 | bcdframenum;
/* handle special codes for line 17 */
line17 = curpat->line17;
if (line17 == INSERT_FRAME_CODE_INC)
{
framenum++;
bcdframenum = (((framenum / 10000) % 10) << 16) | (((framenum / 1000) % 10) << 12) | (((framenum / 100) % 10) << 8) | (((framenum / 10) % 10) << 4) | (framenum % 10);
}
if (line17 == INSERT_FRAME_CODE || line17 == INSERT_FRAME_CODE_INC)
line17 = 0xf80000 | bcdframenum;
/* handle special codes for line 18 */
line18 = curpat->line18;
if (line18 == INSERT_FRAME_CODE_INC)
{
framenum++;
bcdframenum = (((framenum / 10000) % 10) << 16) | (((framenum / 1000) % 10) << 12) | (((framenum / 100) % 10) << 8) | (((framenum / 10) % 10) << 4) | (framenum % 10);
}
if (line18 == INSERT_FRAME_CODE || line18 == INSERT_FRAME_CODE_INC)
line18 = 0xf80000 | bcdframenum;
/* bail if we passed the end */
if (framenum > patcount)
return 0;
/* if we don't have a white flag, the previous frame must match us */
if (!curpat->white) flags |= 0x01;
/* advance to the next pattern piece */
curpat = curpat->next;
if (curpat == NULL)
curpat = pattern;
/* if the new field doesn't have a white flag, it must match our current frame */
if (!curpat->white) flags |= 0x02;
/* output the result */
output_meta(flags, curpat->white, line16, line17, line18, bcdframenum, 0);
}
return 0;
}
void output_key (Key *k)
{
// output_meta will print endline
printf ("key: %s, string: %s", keyName(k), keyString(k));
output_meta(k);
}
