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| author | Michael Niedermayer <michaelni@gmx.at> | 2008-08-21 21:31:03 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2008-08-21 21:31:03 +0000 |
| commit | 012fd207a38450e27ef5be6c9172db1187fc893f (patch) | |
| tree | fc33d6dda7145a4cf17a64a370c1d2e7bf57a174 /libavcodec/acelp_filters.c | |
| parent | da7e59b4ab0df41ebc5f2df98a587fd7e4764eda (diff) | |
| download | ffmpeg-streaming-012fd207a38450e27ef5be6c9172db1187fc893f.zip ffmpeg-streaming-012fd207a38450e27ef5be6c9172db1187fc893f.tar.gz | |
Remove some irrelevant comments.
Originally committed as revision 14884 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/acelp_filters.c')
| -rw-r--r-- | libavcodec/acelp_filters.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/libavcodec/acelp_filters.c b/libavcodec/acelp_filters.c index 8b4ed44..86f5392 100644 --- a/libavcodec/acelp_filters.c +++ b/libavcodec/acelp_filters.c @@ -93,10 +93,7 @@ void ff_acelp_convolve_circ( /* Since there are few pulses over an entire subframe (i.e. almost all fc_in[i] are zero) it is faster to swap two loops and process - non-zero samples only. In the case of G.729D the buffer contains - two non-zero samples before the call to ff_acelp_enhance_harmonics - and, due to pitch_delay being bounded by [20; 143], a maximum - of four non-zero samples for a total of 40 after the call. */ + non-zero samples only. */ for(i=0; i<subframe_size; i++) { if(fc_in[i]) @@ -133,7 +130,6 @@ int ff_acelp_lp_synthesis_filter( sum = (sum >> 12) + in[n]; - /* Check for overflow */ if(sum + 0x8000 > 0xFFFFU) { if(stop_on_overflow) @@ -172,9 +168,6 @@ void ff_acelp_high_pass_filter( tmp += MULL(hpf_f[1], -7667); /* (13.13) = (13.13) * (0.13) */ tmp += 7699 * (in[i] - 2*in[i-1] + in[i-2]); /* (14.13) = (0.13) * (14.0) */ - /* Multiplication by 2 with rounding can cause short type - overflow, thus clipping is required. */ - out[i] = av_clip_int16((tmp + 0x800) >> 12); /* (15.0) = 2 * (13.13) = (14.13) */ hpf_f[1] = hpf_f[0]; |
