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libfdk-aacenc: Enable 7.1 channel encoding 

7.1(wide) and 7.1(wide-side) channel layouts are supported in
fdk-aac since the 0.1.3 release.

The earlier versions of fdk-aac didn't include any library
version defines in the public headers, thus checking for
the AACENCODER_LIB_VL0 define is enough to know that we're
building against a new enough version of fdk-aac.

This change includes contributions by Tim Walker,
Michael Niedermayer and Timothy Gu.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Jean First 2014-01-26 01:31:53 +01:00 committed by Martin Storsjö
parent 9580818c5d
commit 15fa856b82
1 changed files with 18 additions and 0 deletions
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18
libavcodec/libfdk-aacenc.c
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@ -151,6 +151,20 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
case 4: mode = MODE_1_2_1; sce = 2; cpe = 1; break;
case 5: mode = MODE_1_2_2; sce = 1; cpe = 2; break;
case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2; break;
/* The version macro is introduced the same time as the 7.1 support, so this
should suffice. */
#ifdef AACENCODER_LIB_VL0
case 8:
sce = 2;
cpe = 3;
if (avctx->channel_layout == AV_CH_LAYOUT_7POINT1) {
mode = MODE_7_1_REAR_SURROUND;
} else {
// MODE_1_2_2_2_1 and MODE_7_1_FRONT_CENTER use the same channel layout
mode = MODE_7_1_FRONT_CENTER;
}
break;
#endif
default:
av_log(avctx, AV_LOG_ERROR,
"Unsupported number of channels %d\n", avctx->channels);
@ -386,6 +400,10 @@ static const uint64_t aac_channel_layout[] = {
AV_CH_LAYOUT_4POINT0,
AV_CH_LAYOUT_5POINT0_BACK,
AV_CH_LAYOUT_5POINT1_BACK,
#ifdef AACENCODER_LIB_VL0
AV_CH_LAYOUT_7POINT1_WIDE_BACK,
AV_CH_LAYOUT_7POINT1,
#endif
0,
};