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mlp_parse.c: set AVCodecContext channel_layout

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The channel layout isn't getting set for mlp and truehd audio.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
John Stebbins 2011-03-25 19:34:19 -07:00 committed by Anton Khirnov
parent 95c851e2c6
commit 4b6f097b21
1 changed files with 57 additions and 2 deletions
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59
libavcodec/mlp_parser.c
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@ -42,11 +42,52 @@ static const uint8_t mlp_channels[32] = {
5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static const uint64_t 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)
@ -65,6 +106,16 @@ static int truehd_channels(int chanmap)
return channels;
}
static int64_t 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.
@ -264,12 +315,16 @@ static int mlp_parse(AVCodecParserContext *s,
if (mh.stream_type == 0xbb) {
/* MLP stream */
avctx->channels = mlp_channels[mh.channels_mlp];
avctx->channel_layout = 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 = truehd_layout(mh.channels_thd_stream2);
} else {
avctx->channels = truehd_channels(mh.channels_thd_stream1);
avctx->channel_layout = truehd_layout(mh.channels_thd_stream1);
}
}
if (!mh.is_vbr) /* Stream is CBR */