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Parameter added for user to set the cutoff frequency when encoding with faac.

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Patch by Luca Abeni - lucabe72 at email dot it.

Originally committed as revision 4837 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni 2006-01-10 20:07:29 +00:00 committed by Benjamin Larsson
parent e0f80bd744
commit 14f0c8e28a
3 changed files with 9 additions and 0 deletions
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7
libavcodec/avcodec.h
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@ -1982,6 +1982,13 @@ typedef struct AVCodecContext {
* - decoding: unused
*/
int directpred;
/**
* audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
* - encoding: set by user.
* - decoding: unused
*/
int cutoff;
} AVCodecContext;
/**

1
libavcodec/faac.c
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@ -57,6 +57,7 @@ static int Faac_encode_init(AVCodecContext *avctx)
faac_cfg->useTns = 0;
faac_cfg->allowMidside = 1;
faac_cfg->bitRate = avctx->bit_rate / avctx->channels;
faac_cfg->bandWidth = avctx->cutoff;
if(avctx->flags & CODEC_FLAG_QSCALE) {
faac_cfg->bitRate = 0;
faac_cfg->quantqual = avctx->global_quality / FF_QP2LAMBDA;

1
libavcodec/utils.c
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@ -494,6 +494,7 @@ static AVOption options[]={
{"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
{"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
{"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
{"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},