RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Remove the cos_mod table that has become unused after replacing the imdct 

by ff_imdct_half().

Originally committed as revision 15050 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-08-30 11:01:58 +00:00
parent 89df5e95bb
commit 1d8370aad9
1 changed files with 0 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
libavcodec/dca.c
View File

@ -84,9 +84,6 @@ static BitAlloc dca_tmode; ///< transition mode VLCs
static BitAlloc dca_scalefactor; ///< scalefactor VLCs
static BitAlloc dca_smpl_bitalloc[11]; ///< samples VLCs
/** Pre-calculated cosine modulation coefs for the QMF */
static float cos_mod[544];
static av_always_inline int get_bitalloc(GetBitContext *gb, BitAlloc *ba, int idx)
{
return get_vlc2(gb, ba->vlc[idx].table, ba->vlc[idx].bits, ba->wrap) + ba->offset;
@ -1192,36 +1189,6 @@ static int dca_decode_frame(AVCodecContext * avctx,
/**
* Build the cosine modulation tables for the QMF
*
* @param s pointer to the DCAContext
*/
static av_cold void pre_calc_cosmod(DCAContext * s)
{
int i, j, k;
static int cosmod_initialized = 0;
if(cosmod_initialized) return;
for (j = 0, k = 0; k < 16; k++)
for (i = 0; i < 16; i++)
cos_mod[j++] = cos((2 * i + 1) * (2 * k + 1) * M_PI / 64);
for (k = 0; k < 16; k++)
for (i = 0; i < 16; i++)
cos_mod[j++] = cos((i) * (2 * k + 1) * M_PI / 32);
for (k = 0; k < 16; k++)
cos_mod[j++] = 0.25 / (2 * cos((2 * k + 1) * M_PI / 128));
for (k = 0; k < 16; k++)
cos_mod[j++] = -0.25 / (2.0 * sin((2 * k + 1) * M_PI / 128));
cosmod_initialized = 1;
}
/**
* DCA initialization
*
@ -1235,7 +1202,6 @@ static av_cold int dca_decode_init(AVCodecContext * avctx)
s->avctx = avctx;
dca_init_vlcs();
pre_calc_cosmod(s);
dsputil_init(&s->dsp, avctx);
ff_mdct_init(&s->imdct, 6, 1);