static void *open_avi(const char *filename, movie_info *info)
{
const avi_movie_info *aviinfo;
avi_error avierr;
avi_file *avi;
/* open the file */
avierr = avi_open(filename, &avi);
if (avierr != AVIERR_NONE)
{
fprintf(stderr, "Error opening AVI file: %s\n", avi_error_string(avierr));
return NULL;
}
/* extract movie info */
aviinfo = avi_get_movie_info(avi);
info->framerate = (double)aviinfo->video_timescale / (double)aviinfo->video_sampletime;
info->numframes = aviinfo->video_numsamples;
info->width = aviinfo->video_width;
info->height = aviinfo->video_height;
info->samplerate = aviinfo->audio_samplerate;
info->channels = aviinfo->audio_channels;
return avi;
}
void video_manager::begin_recording(const char *name, movie_format format)
{
// stop any existign recording
end_recording();
// create a snapshot bitmap so we know what the target size is
create_snapshot_bitmap(NULL);
// reset the state
m_movie_frame = 0;
m_movie_next_frame_time = machine().time();
// start up an AVI recording
if (format == MF_AVI)
{
// build up information about this new movie
avi_movie_info info;
info.video_format = 0;
info.video_timescale = 1000 * ((machine().primary_screen != NULL) ? ATTOSECONDS_TO_HZ(machine().primary_screen->frame_period().attoseconds) : screen_device::DEFAULT_FRAME_RATE);
info.video_sampletime = 1000;
info.video_numsamples = 0;
info.video_width = m_snap_bitmap.width();
info.video_height = m_snap_bitmap.height();
info.video_depth = 24;
info.audio_format = 0;
info.audio_timescale = machine().sample_rate();
info.audio_sampletime = 1;
info.audio_numsamples = 0;
info.audio_channels = 2;
info.audio_samplebits = 16;
info.audio_samplerate = machine().sample_rate();
// create a new temporary movie file
file_error filerr;
astring fullpath;
{
emu_file tempfile(machine().options().snapshot_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
if (name != NULL)
filerr = tempfile.open(name);
else
filerr = open_next(tempfile, "avi");
// compute the frame time
m_movie_frame_period = attotime::from_seconds(1000) / info.video_timescale;
// if we succeeded, make a copy of the name and create the real file over top
if (filerr == FILERR_NONE)
fullpath = tempfile.fullpath();
}
if (filerr == FILERR_NONE)
{
// create the file and free the string
avi_error avierr = avi_create(fullpath, &info, &m_avifile);
if (avierr != AVIERR_NONE)
mame_printf_error("Error creating AVI: %s\n", avi_error_string(avierr));
}
}
// start up a MNG recording
else if (format == MF_MNG)
{
// create a new movie file and start recording
m_mngfile = auto_alloc(machine(), emu_file(machine().options().snapshot_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS));
file_error filerr;
if (name != NULL)
filerr = m_mngfile->open(name);
else
filerr = open_next(*m_mngfile, "mng");
if (filerr == FILERR_NONE)
{
// start the capture
int rate = (machine().primary_screen != NULL) ? ATTOSECONDS_TO_HZ(machine().primary_screen->frame_period().attoseconds) : screen_device::DEFAULT_FRAME_RATE;
png_error pngerr = mng_capture_start(*m_mngfile, m_snap_bitmap, rate);
if (pngerr != PNGERR_NONE)
return end_recording();
// compute the frame time
m_movie_frame_period = attotime::from_hz(rate);
}
else
{
mame_printf_error("Error creating MNG\n");
global_free(m_mngfile);
m_mngfile = NULL;
}
}
}
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;
}
