hb_audio_remap_t* hb_audio_remap_init(uint64_t channel_layout,
hb_chan_map_t *map_out,
hb_chan_map_t *map_in)
{
hb_audio_remap_t *remap = malloc(sizeof(hb_audio_remap_t));
if (remap == NULL)
return NULL;
remap->remap_table = hb_audio_remap_build_table(channel_layout,
map_out, map_in);
if (remap->remap_table == NULL)
{
hb_audio_remap_free(remap);
return NULL;
}
int ii;
remap->nchannels = av_get_channel_layout_nb_channels(channel_layout);
remap->sample_size = remap->nchannels * sizeof(hb_sample_t);
remap->remap_needed = 0;
for (ii = 0; ii < remap->nchannels; ii++)
{
if (remap->remap_table[ii] != ii)
{
remap->remap_needed = 1;
break;
}
}
return remap;
}
/***********************************************************************
* Close
***********************************************************************
*
**********************************************************************/
void encCoreAudioClose(hb_work_object_t *w)
{
hb_work_private_t *pv = w->private_data;
if (pv != NULL)
{
if (pv->converter)
{
AudioConverterDispose(pv->converter);
}
if (pv->buf != NULL)
{
free(pv->buf);
}
if (pv->remap != NULL)
{
hb_audio_remap_free(pv->remap);
}
hb_list_empty(&pv->list);
free(pv);
w->private_data = NULL;
}
}
hb_audio_remap_t* hb_audio_remap_init(enum AVSampleFormat sample_fmt,
hb_chan_map_t *channel_map_out,
hb_chan_map_t *channel_map_in)
{
hb_audio_remap_t *remap = calloc(1, sizeof(hb_audio_remap_t));
if (remap == NULL)
{
hb_error("hb_audio_remap_init: failed to allocate remap");
goto fail;
}
// sample format
switch (sample_fmt)
{
case AV_SAMPLE_FMT_U8P:
case AV_SAMPLE_FMT_S16P:
case AV_SAMPLE_FMT_S32P:
case AV_SAMPLE_FMT_FLTP:
case AV_SAMPLE_FMT_DBLP:
remap->remap = &remap_planar;
break;
case AV_SAMPLE_FMT_U8:
remap->remap = &remap_u8_interleaved;
break;
case AV_SAMPLE_FMT_S16:
remap->remap = &remap_s16_interleaved;
break;
case AV_SAMPLE_FMT_S32:
remap->remap = &remap_s32_interleaved;
break;
case AV_SAMPLE_FMT_FLT:
remap->remap = &remap_flt_interleaved;
break;
case AV_SAMPLE_FMT_DBL:
remap->remap = &remap_dbl_interleaved;
break;
default:
hb_error("hb_audio_remap_init: unsupported sample format '%s'",
av_get_sample_fmt_name(sample_fmt));
goto fail;
}
// input/output channel order
if (channel_map_in == NULL || channel_map_out == NULL)
{
hb_error("hb_audio_remap_init: invalid channel map(s)");
goto fail;
}
remap->channel_map_in = channel_map_in;
remap->channel_map_out = channel_map_out;
// remap can't be done until the channel layout has been set
remap->remap_needed = 0;
return remap;
fail:
hb_audio_remap_free(remap);
return NULL;
}
