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Merge commit '3ffcccb4fbaae4d5ad775506f1f2761f2029affa' 

* commit '3ffcccb4fbaae4d5ad775506f1f2761f2029affa':
  mlpdec: TrueHD: use Libav channel order.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-23 15:59:45 +01:00
parent fa36270c4c 3ffcccb4fb
commit cd6a8618b1
1 changed files with 36 additions and 14 deletions
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50
libavcodec/mlpdec.c
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@ -152,6 +152,36 @@ typedef struct MLPDecodeContext {
MLPDSPContext dsp;
} MLPDecodeContext;
static const uint64_t thd_channel_order[] = {
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_FRONT_LEFT_OF_CENTER, AV_CH_FRONT_RIGHT_OF_CENTER, // LRc
AV_CH_BACK_LEFT, AV_CH_BACK_RIGHT, // LRrs
AV_CH_BACK_CENTER, // Cs
AV_CH_TOP_CENTER, // Ts
AV_CH_SURROUND_DIRECT_LEFT, AV_CH_SURROUND_DIRECT_RIGHT, // LRsd
AV_CH_WIDE_LEFT, AV_CH_WIDE_RIGHT, // LRw
AV_CH_TOP_FRONT_CENTER, // Cvh
AV_CH_LOW_FREQUENCY_2, // LFE2
};
static uint64_t thd_channel_layout_extract_channel(uint64_t channel_layout,
int index)
{
int i;
if (av_get_channel_layout_nb_channels(channel_layout) <= index)
return 0;
for (i = 0; i < FF_ARRAY_ELEMS(thd_channel_order); i++)
if (channel_layout & thd_channel_order[i] && !index--)
return thd_channel_order[i];
return 0;
}
static VLC huff_vlc[3];
/** Initialize static data, constant between all invocations of the codec. */
@ -492,6 +522,12 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
for (ch = 0; ch <= s->max_matrix_channel; ch++) {
int ch_assign = get_bits(gbp, 6);
if (m->avctx->codec_id == AV_CODEC_ID_TRUEHD) {
uint64_t channel = thd_channel_layout_extract_channel(s->ch_layout,
ch_assign);
ch_assign = av_get_channel_layout_channel_index(s->ch_layout,
channel);
}
if (ch_assign > s->max_matrix_channel) {
av_log_ask_for_sample(m->avctx,
"Assignment of matrix channel %d to invalid output channel %d.\n",
@ -513,20 +549,6 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
FFSWAP(int, s->ch_assign[3], s->ch_assign[5]);
}
}
if (m->avctx->codec_id == AV_CODEC_ID_TRUEHD &&
(m->avctx->channel_layout == AV_CH_LAYOUT_7POINT1 ||
m->avctx->channel_layout == AV_CH_LAYOUT_7POINT1_WIDE)) {
FFSWAP(int, s->ch_assign[4], s->ch_assign[6]);
FFSWAP(int, s->ch_assign[5], s->ch_assign[7]);
} else if (m->avctx->codec_id == AV_CODEC_ID_TRUEHD &&
(m->avctx->channel_layout == AV_CH_LAYOUT_6POINT1 ||
m->avctx->channel_layout == (AV_CH_LAYOUT_6POINT1 | AV_CH_TOP_CENTER) ||
m->avctx->channel_layout == (AV_CH_LAYOUT_6POINT1 | AV_CH_TOP_FRONT_CENTER))) {
int i = s->ch_assign[6];
s->ch_assign[6] = s->ch_assign[5];
s->ch_assign[5] = s->ch_assign[4];
s->ch_assign[4] = i;
}
checksum = ff_mlp_restart_checksum(buf, get_bits_count(gbp) - start_count);