/*
==================
SCR_ReadNextFrame
==================
*/
byte *SCR_ReadNextFrame (void)
{
int32_t r;
int32_t command;
byte samples[22050/14*4];
byte compressed[0x20000];
int32_t size;
byte *pic;
cblock_t in, huf1;
int32_t start, end, count;
// read the next frame
r = FS_FRead (&command, 4, 1, cl.cinematic_file);
if (r == 0) // we'll give it one more chance
r = FS_FRead (&command, 4, 1, cl.cinematic_file);
if (r != 4)
return NULL;
command = LittleLong(command);
if (command == 2)
return NULL; // last frame marker
if (command == 1)
{ // read palette
FS_Read (cl.cinematicpalette, sizeof(cl.cinematicpalette), cl.cinematic_file);
cl.cinematicpalette_active = 0; // dubious.... exposes an edge case
}
// decompress the next frame
FS_Read (&size, 4, cl.cinematic_file);
size = LittleLong(size);
if (size > sizeof(compressed) || size < 1)
Com_Error (ERR_DROP, "Bad compressed frame size");
FS_Read (compressed, size, cl.cinematic_file);
// read sound
start = cl.cinematicframe*cin.s_rate/14;
end = (cl.cinematicframe+1)*cin.s_rate/14;
count = end - start;
FS_Read (samples, count*cin.s_width*cin.s_channels, cl.cinematic_file);
S_RawSamples (count, cin.s_rate, cin.s_width, cin.s_channels, samples, Cvar_VariableValue("s_volume"));
in.data = compressed;
in.count = size;
huf1 = Huff1Decompress (in);
pic = huf1.data;
cl.cinematicframe++;
return pic;
}
byte *
SCR_ReadNextFrame(void)
{
int r;
int command;
byte samples[22050 / 14 * 4];
byte compressed[0x20000];
int size;
byte *pic;
cblock_t in, huf1;
int start, end, count;
/* read the next frame */
r = FS_FRead(&command, 4, 1, cl.cinematic_file);
if (r == 0)
{
/* we'll give it one more chance */
r = FS_FRead(&command, 4, 1, cl.cinematic_file);
}
if (r != 4)
{
return NULL;
}
command = LittleLong(command);
if (command == 2)
{
return NULL; /* last frame marker */
}
if (command == 1)
{
/* read palette */
FS_Read(cl.cinematicpalette, sizeof(cl.cinematicpalette),
cl.cinematic_file);
cl.cinematicpalette_active = 0;
}
/* decompress the next frame */
FS_Read(&size, 4, cl.cinematic_file);
size = LittleLong(size);
if (((unsigned long)size > sizeof(compressed)) || (size < 1))
{
Com_Error(ERR_DROP, "Bad compressed frame size");
}
FS_Read(compressed, size, cl.cinematic_file);
/* read sound */
start = cl.cinematicframe * cin.s_rate / 14;
end = (cl.cinematicframe + 1) * cin.s_rate / 14;
count = end - start;
FS_Read(samples, count * cin.s_width * cin.s_channels,
cl.cinematic_file);
if (cin.s_width == 2)
{
for (r = 0; r < count * cin.s_channels; r++)
{
((short *)samples)[r] = LittleShort(((short *)samples)[r]);
}
}
S_RawSamples(count, cin.s_rate, cin.s_width, cin.s_channels,
samples, Cvar_VariableValue("s_volume"));
in.data = compressed;
in.count = size;
huf1 = Huff1Decompress(in);
pic = huf1.data;
cl.cinematicframe++;
return pic;
}