diff options
Diffstat (limited to 'libavcodec/dsputil.c')
| -rw-r--r-- | libavcodec/dsputil.c | 65 |
1 files changed, 37 insertions, 28 deletions
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c index 967406eedf..182063ca2b 100644 --- a/libavcodec/dsputil.c +++ b/libavcodec/dsputil.c @@ -145,6 +145,41 @@ void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_s } } +void ff_init_scantable_permutation(uint8_t *idct_permutation, + int idct_permutation_type) +{ + int i; + + switch(idct_permutation_type){ + case FF_NO_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= i; + break; + case FF_LIBMPEG2_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2); + break; + case FF_SIMPLE_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= simple_mmx_permutation[i]; + break; + case FF_TRANSPOSE_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= ((i&7)<<3) | (i>>3); + break; + case FF_PARTTRANS_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= (i&0x24) | ((i&3)<<3) | ((i>>3)&3); + break; + case FF_SSE2_IDCT_PERM: + for(i=0; i<64; i++) + idct_permutation[i]= (i&0x38) | idct_sse2_row_perm[i&7]; + break; + default: + av_log(NULL, AV_LOG_ERROR, "Internal error, IDCT permutation not set\n"); + } +} + static int pix_sum_c(uint8_t * pix, int line_size) { int s, i, j; @@ -3123,32 +3158,6 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx) c->avg_2tap_qpel_pixels_tab[0][i]= c->avg_h264_qpel_pixels_tab[0][i]; } - switch(c->idct_permutation_type){ - case FF_NO_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= i; - break; - case FF_LIBMPEG2_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2); - break; - case FF_SIMPLE_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= simple_mmx_permutation[i]; - break; - case FF_TRANSPOSE_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= ((i&7)<<3) | (i>>3); - break; - case FF_PARTTRANS_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= (i&0x24) | ((i&3)<<3) | ((i>>3)&3); - break; - case FF_SSE2_IDCT_PERM: - for(i=0; i<64; i++) - c->idct_permutation[i]= (i&0x38) | idct_sse2_row_perm[i&7]; - break; - default: - av_log(avctx, AV_LOG_ERROR, "Internal error, IDCT permutation not set\n"); - } + ff_init_scantable_permutation(c->idct_permutation, + c->idct_permutation_type); } |