[FFmpeg-devel] [PATCH] Add support for MPEG-2 AAC
Timothy Gu
timothygu99 at gmail.com
Sat Jun 22 06:50:29 CEST 2013
On Fri, Jun 21, 2013 at 7:47 PM, Kieran Kunhya <kierank at ob-encoder.com> wrote:
> ---
> libavcodec/avcodec.h | 2 ++
> libavcodec/libfdk-aacenc.c | 1 +
> libavcodec/options_table.h | 2 ++
> 3 files changed, 5 insertions(+)
>
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index bb33d4a..f4a10e1 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -2530,6 +2530,8 @@ typedef struct AVCodecContext {
> #define FF_PROFILE_AAC_HE_V2 28
> #define FF_PROFILE_AAC_LD 22
> #define FF_PROFILE_AAC_ELD 38
> +#define FF_PROFILE_MPEG2_AAC_LOW 128
> +#define FF_PROFILE_MPEG2_AAC_HE 131
>
> #define FF_PROFILE_DTS 20
> #define FF_PROFILE_DTS_ES 30
> diff --git a/libavcodec/libfdk-aacenc.c b/libavcodec/libfdk-aacenc.c
> index ef154c1..4938262 100644
> --- a/libavcodec/libfdk-aacenc.c
> +++ b/libavcodec/libfdk-aacenc.c
> @@ -197,6 +197,7 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
> avctx->bit_rate = (96*sce + 128*cpe) * avctx->sample_rate / 44;
> if (avctx->profile == FF_PROFILE_AAC_HE ||
> avctx->profile == FF_PROFILE_AAC_HE_V2 ||
> + avctx->profile == FF_PROFILE_MPEG2_AAC_HE ||
> s->eld_sbr)
> avctx->bit_rate /= 2;
> }
> diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
> index 5595c0e..244d3b9 100644
> --- a/libavcodec/options_table.h
> +++ b/libavcodec/options_table.h
> @@ -291,6 +291,8 @@ static const AVOption options[]={
> {"aac_he_v2", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_HE_V2 }, INT_MIN, INT_MAX, A|E, "profile"},
> {"aac_ld", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_LD }, INT_MIN, INT_MAX, A|E, "profile"},
> {"aac_eld", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_ELD }, INT_MIN, INT_MAX, A|E, "profile"},
> +{"mpeg2_aac_low", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_MPEG2_AAC_LOW }, INT_MIN, INT_MAX, A|E, "profile"},
> +{"mpeg2_aac_he", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_MPEG2_AAC_HE }, INT_MIN, INT_MAX, A|E, "profile"},
> {"dts", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS }, INT_MIN, INT_MAX, A|E, "profile"},
> {"dts_es", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_ES }, INT_MIN, INT_MAX, A|E, "profile"},
> {"dts_96_24", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_96_24 }, INT_MIN, INT_MAX, A|E, "profile"},
> --
> 1.7.9.5
Maybe you can add MPEG2_AAC_HE_V2 too?
https://github.com/mstorsjo/fdk-aac/blob/master/libAACenc/include/aacenc_lib.h#L845
Timothy
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