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| author | Oded Shimon <ods15@ods15.dyndns.org> | 2006-10-02 06:08:59 +0000 |
|---|---|---|
| committer | Oded Shimon <ods15@ods15.dyndns.org> | 2006-10-02 06:08:59 +0000 |
| commit | 4000774d8f75e498ddf6b783b80bffe508fb62ab (patch) | |
| tree | e257580962129cad4f7c6cc7824cb48c13bb069c /libavcodec | |
| parent | b002eec9850900cfa098ec25513cb11e2c694fe5 (diff) | |
| download | ffmpeg-4000774d8f75e498ddf6b783b80bffe508fb62ab.tar.gz | |
Original Commit: r92 | ods15 | 2006-09-30 12:13:47 +0300 (Sat, 30 Sep 2006) | 3 lines
user settable audio quality, with -aq. values between 0.1 to 0.3 are sane.
the higher the better.
Originally committed as revision 6496 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/vorbis_enc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libavcodec/vorbis_enc.c b/libavcodec/vorbis_enc.c index ff4e9d0ece..5cf96818d7 100644 --- a/libavcodec/vorbis_enc.c +++ b/libavcodec/vorbis_enc.c @@ -114,6 +114,7 @@ typedef struct { float * samples; float * floor; // also used for tmp values for mdct float * coeffs; // also used for residue after floor + float quality; int ncodebooks; codebook_t * codebooks; @@ -787,14 +788,14 @@ static void floor_fit(venc_context_t * venc, floor_t * fc, float * coeffs, int * float tot_average = 0.; for (i = 0; i < fc->values; i++) tot_average += get_floor_average(fc, coeffs, i); tot_average /= fc->values; - tot_average /= 0.5; + tot_average /= venc->quality; for (i = 0; i < fc->values; i++) { int position = fc->list[fc->list[i].sort].x; float average = get_floor_average(fc, coeffs, i); int j; - average /= pow(average, 0.7) / tot_average * pow(0.9, position/200.); // MAGIC! + average /= pow(average, 0.5) / tot_average * pow(0.8, position/200.); // MAGIC! for (j = 0; j < range - 1; j++) if (floor1_inverse_db_table[j * fc->multiplier] > average) break; posts[fc->list[i].sort] = j; } @@ -1064,7 +1065,8 @@ static int vorbis_encode_init(AVCodecContext * avccontext) create_vorbis_context(venc, avccontext); - //if (avccontext->flags & CODEC_FLAG_QSCALE) avccontext->global_quality / (float)FF_QP2LAMBDA); else avccontext->bit_rate; + if (avccontext->flags & CODEC_FLAG_QSCALE) venc->quality = avccontext->global_quality / (float)FF_QP2LAMBDA; + else venc->quality = 0.17; //if(avccontext->cutoff > 0) cfreq = avccontext->cutoff / 1000.0; avccontext->extradata_size = put_main_header(venc, (uint8_t**)&avccontext->extradata); |