mh->group1_samplerate = mlp_samplerate(ratebits);
mh->group2_samplerate = 0;
- skip_bits(gb, 8);
+ skip_bits(gb, 4);
+
+ mh->channel_modifier_thd_stream0 = get_bits(gb, 2);
+ mh->channel_modifier_thd_stream1 = get_bits(gb, 2);
+ mh->channel_arrangement=
channel_arrangement = get_bits(gb, 5);
mh->channels_thd_stream1 = truehd_channels(channel_arrangement);
- mh->channel_layout_thd_stream1 = truehd_layout(channel_arrangement);
+ mh->channel_layout_thd_stream1 = ff_truehd_layout(channel_arrangement);
- skip_bits(gb, 2);
+ mh->channel_modifier_thd_stream2 = get_bits(gb, 2);
channel_arrangement = get_bits(gb, 13);
mh->channels_thd_stream2 = truehd_channels(channel_arrangement);
int group1_samplerate; ///< Sample rate of first substream
int group2_samplerate; ///< Sample rate of second substream (MLP only)
+ int channel_arrangement;
++
+ int channel_modifier_thd_stream0; ///< Channel modifier for substream 0 of TrueHD sreams ("2-channel presentation")
+ int channel_modifier_thd_stream1; ///< Channel modifier for substream 1 of TrueHD sreams ("6-channel presentation")
+ int channel_modifier_thd_stream2; ///< Channel modifier for substream 2 of TrueHD sreams ("8-channel presentation")
+
int channels_mlp; ///< Channel count for MLP streams
int channels_thd_stream1; ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
int channels_thd_stream2; ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
else
m->substream[2].ch_layout = mh.channel_layout_thd_stream1;
m->substream[substr].ch_layout = mh.channel_layout_thd_stream1;
+
+ if (m->avctx->channels<=2 && m->substream[substr].ch_layout == AV_CH_LAYOUT_MONO && m->max_decoded_substream == 1) {
+ av_log(m->avctx, AV_LOG_DEBUG, "Mono stream with 2 substreams, ignoring 2nd\n");
+ m->max_decoded_substream = 0;
+ if (m->avctx->channels==2)
+ m->avctx->channel_layout = AV_CH_LAYOUT_STEREO;
+ }
}
+ m->needs_reordering = mh.channel_arrangement >= 18 && mh.channel_arrangement <= 20;
+
+ /* Parse the TrueHD decoder channel modifiers and set each substream's
+ * AVMatrixEncoding accordingly.
+ *
+ * The meaning of the modifiers depends on the channel layout:
+ *
+ * - THD_CH_MODIFIER_LTRT, THD_CH_MODIFIER_LBINRBIN only apply to 2-channel
+ *
+ * - THD_CH_MODIFIER_MONO applies to 1-channel or 2-channel (dual mono)
+ *
+ * - THD_CH_MODIFIER_SURROUNDEX, THD_CH_MODIFIER_NOTSURROUNDEX only apply to
+ * layouts with an Ls/Rs channel pair
+ */
+ for (substr = 0; substr < MAX_SUBSTREAMS; substr++)
+ m->substream[substr].matrix_encoding = AV_MATRIX_ENCODING_NONE;
+ if (m->avctx->codec_id == AV_CODEC_ID_TRUEHD) {
+ if (mh.num_substreams > 2 &&
+ mh.channel_layout_thd_stream2 & AV_CH_SIDE_LEFT &&
+ mh.channel_layout_thd_stream2 & AV_CH_SIDE_RIGHT &&
+ mh.channel_modifier_thd_stream2 == THD_CH_MODIFIER_SURROUNDEX)
+ m->substream[2].matrix_encoding = AV_MATRIX_ENCODING_DOLBYEX;
+
+ if (mh.num_substreams > 1 &&
+ mh.channel_layout_thd_stream1 & AV_CH_SIDE_LEFT &&
+ mh.channel_layout_thd_stream1 & AV_CH_SIDE_RIGHT &&
+ mh.channel_modifier_thd_stream1 == THD_CH_MODIFIER_SURROUNDEX)
+ m->substream[1].matrix_encoding = AV_MATRIX_ENCODING_DOLBYEX;
+
+ if (mh.num_substreams > 0)
+ switch (mh.channel_modifier_thd_stream0) {
+ case THD_CH_MODIFIER_LTRT:
+ m->substream[0].matrix_encoding = AV_MATRIX_ENCODING_DOLBY;
+ break;
+ case THD_CH_MODIFIER_LBINRBIN:
+ m->substream[0].matrix_encoding = AV_MATRIX_ENCODING_DOLBYHEADPHONE;
+ break;
+ default:
+ break;
+ }
+ }
+
return 0;
}