myinline const char* ArpMessage::GetIndirect(const char *name, const char* def, int32 index) const
{
if( this ) {
const char* res;
if( FindIndirect(name, index, &res) != B_NO_ERROR ) return def;
return res;
}
return def;
#if 0
if( this ) {
const char* res = NULL;
ssize_t bytes = 0;
if( FindData(name, ARP_INDIRECT_TYPE, index, (const void**)&res, &bytes) != B_NO_ERROR ) return def;
if( !res ) return def;
ArpD(cdb << ADH << "Got indirect: " << res << " for " << name
<< " (" << bytes << " bytes)" << endl);
if( res[bytes-1] != '\0' ) {
printf("Oops!\n");
return def;
}
return res;
}
return def;
#endif
}
status_t ArpMessage::FindIndirect(const char *name, const char** ind) const
{
return FindIndirect(name,(int32)0,ind);
}
static int Open(vlc_object_t *object)
{
filter_t *filter = (filter_t *)object;
const es_format_t *src = &filter->fmt_in;
es_format_t *dst = &filter->fmt_out;
if (!AOUT_FMTS_SIMILAR(&src->audio, &dst->audio))
return VLC_EGENERIC;
if (src->i_codec == dst->i_codec)
return VLC_EGENERIC;
cvt_direct_t direct = FindDirect(src->i_codec, dst->i_codec);
if (direct) {
filter->pf_audio_filter = direct;
filter->p_sys = NULL;
goto end;
}
/* */
filter_sys_t *sys = malloc(sizeof(*sys));
if (!sys)
return VLC_ENOMEM;
/* Find the cost minimal conversion */
for (unsigned mask = 0; mask <= 0x07; mask++) {
memset(sys, 0, sizeof(*sys));
vlc_fourcc_t fsrc = src->i_codec;
vlc_fourcc_t fdst = dst->i_codec;
if (mask & 0x01) {
sys->pre = FindSwap(&fsrc, fsrc);
if (!sys->pre)
continue;
}
if (mask & 0x02) {
sys->post = FindSwap(&fdst, fdst);
if (!sys->post)
continue;
}
const bool has_middle = mask & 0x04;
for (int i = 0; fsrc != fdst && i < 1 + has_middle; i++) {
/* XXX Hardcoded middle format: native 16 bits */
vlc_fourcc_t ftarget = has_middle && i == 0 ? VLC_CODEC_S16N : fdst;
sys->directs[i] = FindDirect(fsrc, ftarget);
if (!sys->directs[i]) {
sys->indirects[i] = FindIndirect(fsrc, ftarget);
if (!sys->indirects[i])
break;
sys->indirects_ratio[i][0] = aout_BitsPerSample(fsrc) / 8;
sys->indirects_ratio[i][1] = aout_BitsPerSample(ftarget) / 8;
}
fsrc = ftarget;
}
if (fsrc != fdst)
continue;
/* We have a full conversion */
filter->pf_audio_filter = Filter;
filter->p_sys = sys;
goto end;
}
free(sys);
return VLC_EGENERIC;
end:
dst->audio = src->audio;
dst->audio.i_format = dst->i_codec;
aout_FormatPrepare(&dst->audio);
msg_Dbg(filter, "%4.4s->%4.4s, bits per sample: %i->%i",
(char *)&src->i_codec, (char *)&dst->i_codec,
src->audio.i_bitspersample, dst->audio.i_bitspersample);
return VLC_SUCCESS;
}