mng_retcode mng_display_restart(mng_handle mngh)
{
mng_anim *mng = mng_get_userdata(mngh);
mng->displayed_first = 0;
return mng_display_reset(mngh);
}
bool
CMNGAnimation::ReadNextFrame(RGBA* frame_buffer)
{
if (m_first_display) {
mng_display(m_stream);
m_first_display = false;
} else {
if (mng_display_resume(m_stream) != MNG_NEEDTIMERWAIT) {
mng_display_reset(m_stream); // repeat
}
}
// convert the buffers into frame_buffer
memcpy(frame_buffer, m_frame_buffer, m_width * m_height * sizeof(RGBA));
return true;
}
/**
* \brief MPlayer callback: Seek in MNG stream.
* \param[in] demuxer demuxer structure
* \param[in] rel_seek_secs relative seek time in seconds
* \param[in] audio_delay unused, MNG does not contain audio
* \param[in] flags bit flags, \p 1: absolute, \p 2: fractional position
*/
static void demux_mng_seek(demuxer_t * demuxer, float rel_seek_secs,
float audio_delay, int flags)
{
mng_priv_t * mng_priv = demuxer->priv;
mng_handle h_mng = mng_priv->h_mng;
mng_retcode mng_ret;
int seek_ms, pos_ms;
// exit if not ready to seek (header not yet read or not yet displaying)
if (!mng_priv->header_processed || !mng_priv->displaying)
return;
// get number of milliseconds to seek to
if (flags & 2) // seek by fractional position (0.0 ... 1.0)
seek_ms = (int)(rel_seek_secs * (float)mng_priv->total_time_ms);
else // seek by time in seconds
seek_ms = (int)(rel_seek_secs * 1000.0f + 0.5f);
// get new position in milliseconds
if (flags & 1) // absolute
pos_ms = seek_ms;
else // relative
pos_ms = mng_priv->show_cur_time_ms + seek_ms;
// fix position
if (pos_ms < 0)
pos_ms = 0;
if (pos_ms > mng_priv->total_time_ms)
pos_ms = mng_priv->total_time_ms;
// FIXME
// In principle there is a function to seek in MNG: mng_display_gotime().
// - Using it did not work out (documentation is very brief,
// example code does not exist?).
// - The following code works, but its performance is quite bad.
// seeking forward
if (pos_ms >= mng_priv->show_cur_time_ms) {
// Simply advance show time to seek position.
// - Everything else will be handled in demux_mng_fill_buffer().
mng_priv->show_next_time_ms = pos_ms;
} // if (pos_ms > mng_priv->show_time_ms)
// seeking backward
else { // if (pos_ms > mng_priv->show_time_ms)
// Clear variable MNG library will write number of milliseconds to
// (via settimer callback).
mng_priv->timer_ms = 0;
// Restart displaying and advance show time to seek position.
// - Everything else will be handled in demux_mng_fill_buffer().
mng_ret = mng_display_reset(h_mng);
// If a timer wait is needed, fool libmng that requested time
// passed and try again.
if (mng_ret == MNG_NEEDTIMERWAIT) {
mng_priv->global_time_ms += mng_priv->timer_ms;
mng_ret = mng_display_reset(h_mng);
}
if (mng_ret) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"demux_mng: could not reset MNG display state: "
"mng_retcode %d\n", mng_ret);
return;
}
mng_priv->displaying = 0;
mng_priv->finished = 0;
mng_priv->anim_cur_time_ms = 0;
mng_priv->anim_frame_duration_ms = 0;
mng_priv->show_next_time_ms = pos_ms;
} // if (pos_ms > mng_priv->show_time_ms) ... else
}
/**
** Reset a MNG
*/
void Mng::Reset()
{
mng_display_reset(handle);
iteration = 0;
mng_display(handle);
}
static void ContextMenu(PluginInstance *This, HWND hwnd)
{
int cmd;
HMENU menu;
POINT pt;
unsigned char buf[MAX_PATH], buf2[200];
pt.x=0; pt.y=0;
GetCursorPos(&pt);
// create context menu dynamically
menu=CreatePopupMenu();
if(This->errorflag) {
AppendMenu(menu,MF_ENABLED,ID_SHOWERROR,"SHOW ERROR MESSAGE");
AppendMenu(menu,MF_SEPARATOR,0,NULL);
}
AppendMenu(menu,(This->loadstate>=STATE_LOADED?MF_ENABLED:MF_GRAYED),ID_SAVEAS,"Save Image &As...");
AppendMenu(menu,(This->lpdib?MF_ENABLED:MF_GRAYED),ID_COPYIMAGE,"&Copy Image");
AppendMenu(menu,MF_ENABLED,ID_COPYURL,"Cop&y Image Location");
if(This->islink) {
AppendMenu(menu,MF_ENABLED,ID_COPYLINKLOC,"Copy Link Location");
}
url2filename(buf,This->url);
escapeformenu(buf);
if(lstrlen(buf)) {
wsprintf(buf2,"View Image (%s)",buf);
}
else {
wsprintf(buf2,"View Image");
}
AppendMenu(menu,MF_ENABLED,ID_VIEWIMAGE,buf2);
AppendMenu(menu,MF_SEPARATOR,0,NULL);
// AppendMenu(menu,(This->mng?MF_ENABLED:MF_GRAYED),ID_STOPANIM,"Stop Animation");
AppendMenu(menu,(This->mng?MF_ENABLED:MF_GRAYED)|
(This->frozen?MF_CHECKED:MF_UNCHECKED),ID_FREEZE,"&Freeze Animation");
// AppendMenu(menu,(This->mng?MF_ENABLED:MF_GRAYED),ID_RESTARTANIM,"Restart Animation");
AppendMenu(menu,MF_SEPARATOR,0,NULL);
AppendMenu(menu,MF_ENABLED,ID_PROPERTIES,"Properties...");
AppendMenu(menu,MF_ENABLED,ID_ABOUT,"About MNG Plug-in...");
cmd=TrackPopupMenuEx(menu, TPM_LEFTALIGN|TPM_TOPALIGN|TPM_NONOTIFY|TPM_RETURNCMD|
TPM_RIGHTBUTTON,pt.x,pt.y,hwnd,NULL);
DestroyMenu(menu);
switch(cmd) {
case ID_STOPANIM:
if(This->mng) {
KillTimer(This->fhWnd,1);
This->timer_set=0;
mng_display_freeze(This->mng);
}
break;
case ID_FREEZE:
This->frozen = !This->frozen;
if(This->frozen) {
KillTimer(This->fhWnd,1);
This->timer_set=0;
mng_display_freeze(This->mng);
}
else {
handle_read_error(This, mng_display_resume(This->mng) );
}
break;
case ID_RESTARTANIM:
if(!This->frozen) {
KillTimer(This->fhWnd,1);
This->timer_set=0;
mng_display_freeze(This->mng);
}
This->frozen=1;
mng_display_reset(This->mng);
This->frozen=0;
handle_read_error(This, mng_display_resume(This->mng) );
break;
case ID_SAVEAS:
SaveImage(This);
break;
case ID_COPYIMAGE:
if(This->lpdib) {
CopyToClipboard(This,(unsigned char*)This->lpdib,This->dibsize,CF_DIB);
}
else {
warn(This,"No image to copy");
}
break;
case ID_COPYURL:
CopyToClipboard(This,This->url,lstrlen(This->url)+1,CF_TEXT);
break;
case ID_COPYLINKLOC:
if(This->islink) {
CopyToClipboard(This,This->linkurl,lstrlen(This->linkurl)+1,CF_TEXT);
}
break;
case ID_VIEWIMAGE:
if(lstrlen(This->url))
NPN_GetURL(This->instance,This->url,"_self");
break;
case ID_PROPERTIES:
PropDialog(This);
break;
case ID_ABOUT:
AboutDialog(This);
break;
case ID_SHOWERROR:
display_last_error(This);
break;
}
}
