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mlpdec: TrueHD: use Libav channel order.

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Fixes bug 208.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

CC:libav-stable@libav.org
This commit is contained in:
Tim Walker 2012-12-31 15:33:24 +01:00 committed by Justin Ruggles
parent 99ccd2ba10
commit 3ffcccb4fb
1 changed files with 36 additions and 0 deletions
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36
libavcodec/mlpdec.c
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@ -149,6 +149,36 @@ 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. */
@ -447,6 +477,12 @@ 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",