* MLP parser
* Copyright (c) 2007 Ian Caulfield
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "libavutil/crc.h"
+#include "libavutil/audioconvert.h"
#include "get_bits.h"
#include "parser.h"
#include "mlp_parser.h"
5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
+const uint64_t ff_mlp_layout[32] = {
+ AV_CH_LAYOUT_MONO,
+ AV_CH_LAYOUT_STEREO,
+ AV_CH_LAYOUT_2_1,
+ AV_CH_LAYOUT_2_2,
+ AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_SURROUND,
+ AV_CH_LAYOUT_4POINT0,
+ AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_5POINT1,
+ AV_CH_LAYOUT_4POINT0,
+ AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_5POINT1,
+ AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_5POINT1,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
static const uint8_t thd_chancount[13] = {
// LR C LFE LRs LRvh LRc LRrs Cs Ts LRsd LRw Cvh LFE2
2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 1
};
+static const uint64_t thd_layout[13] = {
+ AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT, // LR
+ AV_CH_FRONT_CENTER, // C
+ AV_CH_LOW_FREQUENCY, // LFE
+ AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRs
+ AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT, // LRvh
+ AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRc
+ AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT, // LRrs
+ AV_CH_BACK_CENTER, // Cs
+ AV_CH_TOP_BACK_CENTER, // Ts
+ AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRsd
+ AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER, // LRw
+ AV_CH_TOP_BACK_CENTER, // Cvh
+ AV_CH_LOW_FREQUENCY // LFE2
+};
+
static int mlp_samplerate(int in)
{
if (in == 0xF)
return channels;
}
+int64_t ff_truehd_layout(int chanmap)
+{
+ int layout = 0, i;
+
+ for (i = 0; i < 13; i++)
+ layout |= thd_layout[i] * ((chanmap >> i) & 1);
+
+ return layout;
+}
+
/** Read a major sync info header - contains high level information about
* the stream - sample rate, channel arrangement etc. Most of this
* information is not actually necessary for decoding, only for playback.
if (mh.stream_type == 0xbb) {
/* MLP stream */
avctx->channels = mlp_channels[mh.channels_mlp];
+ avctx->channel_layout = ff_mlp_layout[mh.channels_mlp];
} else { /* mh.stream_type == 0xba */
/* TrueHD stream */
- if (mh.channels_thd_stream2)
+ if (mh.channels_thd_stream2) {
avctx->channels = truehd_channels(mh.channels_thd_stream2);
- else
+ avctx->channel_layout = ff_truehd_layout(mh.channels_thd_stream2);
+ } else {
avctx->channels = truehd_channels(mh.channels_thd_stream1);
+ avctx->channel_layout = ff_truehd_layout(mh.channels_thd_stream1);
+ }
}
if (!mh.is_vbr) /* Stream is CBR */