- if (s->sfxcache)
- {
- s->sfxcache = NULL;
- Mem_FreePool(&s->mempool);
- }
-}
-
-
-/*
-===============================================================================
-
-WAV loading
-
-===============================================================================
-*/
-
-
-qbyte *data_p;
-qbyte *iff_end;
-qbyte *last_chunk;
-qbyte *iff_data;
-int iff_chunk_len;
-
-
-short GetLittleShort(void)
-{
- short val = 0;
- val = *data_p;
- val = val + (*(data_p+1)<<8);
- data_p += 2;
- return val;
-}
-
-int GetLittleLong(void)
-{
- int val = 0;
- val = *data_p;
- val = val + (*(data_p+1)<<8);
- val = val + (*(data_p+2)<<16);
- val = val + (*(data_p+3)<<24);
- data_p += 4;
- return val;
-}
-
-void FindNextChunk(char *name)
-{
- while (1)
- {
- data_p=last_chunk;
-
- if (data_p >= iff_end)
- { // didn't find the chunk
- data_p = NULL;
- return;
- }
-
- data_p += 4;
- iff_chunk_len = GetLittleLong();
- if (iff_chunk_len < 0)
- {
- data_p = NULL;
- return;
- }
- data_p -= 8;
- last_chunk = data_p + 8 + ( (iff_chunk_len + 1) & ~1 );
- if (!strncmp(data_p, name, 4))
- return;
- }
-}
-
-void FindChunk(char *name)
-{
- last_chunk = iff_data;
- FindNextChunk (name);
-}
-
-
-void DumpChunks(void)
-{
- char str[5];
-
- str[4] = 0;
- data_p=iff_data;
- do
- {
- memcpy (str, data_p, 4);
- data_p += 4;
- iff_chunk_len = GetLittleLong();
- Con_Printf ("0x%x : %s (%d)\n", (int)(data_p - 4), str, iff_chunk_len);
- data_p += (iff_chunk_len + 1) & ~1;
- } while (data_p < iff_end);
-}
-
-/*
-============
-GetWavinfo
-============
-*/
-wavinfo_t GetWavinfo (char *name, qbyte *wav, int wavlength)
-{
- wavinfo_t info;
- int i;
- int format;
- int samples;
-
- memset (&info, 0, sizeof(info));
-
- if (!wav)
- return info;
-
- iff_data = wav;
- iff_end = wav + wavlength;
-
- // find "RIFF" chunk
- FindChunk("RIFF");
- if (!(data_p && !strncmp(data_p+8, "WAVE", 4)))
- {
- Con_Printf("Missing RIFF/WAVE chunks\n");
- return info;
- }
-
- // get "fmt " chunk
- iff_data = data_p + 12;
- //DumpChunks ();
-
- FindChunk("fmt ");
- if (!data_p)
- {
- Con_Printf("Missing fmt chunk\n");
- return info;
- }
- data_p += 8;
- format = GetLittleShort();
- if (format != 1)
- {
- Con_Printf("Microsoft PCM format only\n");
- return info;
- }
-
- info.channels = GetLittleShort();
- info.rate = GetLittleLong();
- data_p += 4+2;
- info.width = GetLittleShort() / 8;
-
- // get cue chunk
- FindChunk("cue ");
- if (data_p)
- {
- data_p += 32;
- info.loopstart = GetLittleLong();
-
- // if the next chunk is a LIST chunk, look for a cue length marker
- FindNextChunk ("LIST");
- if (data_p)
- {
- if (!strncmp (data_p + 28, "mark", 4))
- { // this is not a proper parse, but it works with cooledit...
- data_p += 24;
- i = GetLittleLong (); // samples in loop
- info.samples = info.loopstart + i;
- }
- }
- }
- else
- info.loopstart = -1;
-
- // find data chunk
- FindChunk("data");
- if (!data_p)