From 790bf9f088f8960b62d189eb44322d078109f272 Mon Sep 17 00:00:00 2001 From: Sergio Ammirata Date: Thu, 4 Oct 2012 15:51:05 -0400 Subject: Add support for Workgroup 4 (WG4) channel mapping This is the channel ordering used in DVD Audio, and is the standard used internally in the VLC media player. --- libAACenc/src/aacenc.h | 3 ++- libAACenc/src/aacenc_lib.cpp | 2 +- libAACenc/src/channel_map.cpp | 16 +++++++++++++++- 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/libAACenc/src/aacenc.h b/libAACenc/src/aacenc.h index 8242248..bb49019 100644 --- a/libAACenc/src/aacenc.h +++ b/libAACenc/src/aacenc.h @@ -174,7 +174,8 @@ typedef enum { typedef enum { CH_ORDER_MPEG = 0, /*!< MPEG channel ordering (e. g. 5.1: C, L, R, SL, SR, LFE) */ - CH_ORDER_WAV /*!< WAV fileformat channel ordering (e. g. 5.1: L, R, C, LFE, SL, SR) */ + CH_ORDER_WAV, /*!< WAV fileformat channel ordering (e. g. 5.1: L, R, C, LFE, SL, SR) */ + CH_ORDER_WG4 /*!< WG4 fileformat channel ordering (e. g. 5.1: L, R, SL, SR, C, LFE) */ } CHANNEL_ORDER; diff --git a/libAACenc/src/aacenc_lib.cpp b/libAACenc/src/aacenc_lib.cpp index 6cd1f80..9647094 100644 --- a/libAACenc/src/aacenc_lib.cpp +++ b/libAACenc/src/aacenc_lib.cpp @@ -1657,7 +1657,7 @@ AACENC_ERROR aacEncoder_SetParam( break; case AACENC_CHANNELORDER: if (hAacEncoder->aacConfig.channelOrder != (CHANNEL_ORDER)value) { - if (! ((value==0) || (value==1)) ) { + if (! ((value==0) || (value==1) || (value==2)) ) { err = AACENC_INVALID_CONFIG; break; } diff --git a/libAACenc/src/channel_map.cpp b/libAACenc/src/channel_map.cpp index 687ed83..6eddd47 100644 --- a/libAACenc/src/channel_map.cpp +++ b/libAACenc/src/channel_map.cpp @@ -153,6 +153,18 @@ static const CHANNEL_ASSIGNMENT_INFO_TAB assignmentInfoTabWav[] = { MODE_1_2_2_2_1, { 2, 0, 1, 6, 7, 4, 5, 3,-1,-1,-1,-1} }, /* 7.1ch */ }; +static const CHANNEL_ASSIGNMENT_INFO_TAB assignmentInfoTabWg4[] = +{ + { MODE_INVALID, {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1} }, /* invalid */ + { MODE_1, { 0,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1} }, /* mono */ + { MODE_2, { 0, 1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1} }, /* stereo */ + { MODE_1_2, { 2, 0, 1,-1,-1,-1,-1,-1,-1,-1,-1,-1} }, /* 3ch */ + { MODE_1_2_1, { 3, 0, 1, 2,-1,-1,-1,-1,-1,-1,-1,-1} }, /* 4ch */ + { MODE_1_2_2, { 4, 0, 1, 2, 3,-1,-1,-1,-1,-1,-1,-1} }, /* 5ch */ + { MODE_1_2_2_1, { 4, 0, 1, 2, 3, 5,-1,-1,-1,-1,-1,-1} }, /* 5.1ch */ + { MODE_1_2_2_2_1, { 6, 0, 1, 2, 3, 4, 5, 7,-1,-1,-1,-1} }, /* 7.1ch */ +}; + /* Channel mode configuration tab provides, corresponding number of channels and elements */ @@ -176,8 +188,10 @@ const INT* FDKaacEnc_getChannelAssignment(CHANNEL_MODE encMode, CHANNEL_ORDER co if (co == CH_ORDER_MPEG) pTab = assignmentInfoTabMpeg; - else + else if (co == CH_ORDER_WAV) pTab = assignmentInfoTabWav; + else + pTab = assignmentInfoTabWg4; for(i=MAX_MODES-1; i>0; i--) { if (encMode== pTab[i].encoderMode) { -- cgit v1.2.3