From: nu774 <[email protected]> FDK AAC encoder outputs SCE(front)+CPE(front)+CPE(back)+CPE(back) on MODE_7_1_REAR_SURROUND configuration. Since decoder couldn't properly map 4 back channels, decoding failed unless -request_channel_layout 0x8000000000000000 has been specified. Now we treat first CPE(back) as CPE(side) on channel mapping.
Signed-off-by: Luca Barbato <[email protected]> --- libavcodec/aacdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index 0c7e2c4..74628d6 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -291,6 +291,11 @@ static uint64_t sniff_channel_order(uint8_t (*layout_map)[3], int tags) if (num_back_channels < 0) return 0; + if (num_side_channels == 0 && num_back_channels >= 4) { + num_side_channels = 2; + num_back_channels -= 2; + } + i = 0; if (num_front_channels & 1) { e2c_vec[i] = (struct elem_to_channel) { -- 1.9.0 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
