openharmony/third_party_ffmpeg
1
0
Fork 0
mirror of https://gitee.com/openharmony/third_party_ffmpeg synced 2024-11-23 11:19:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

dvenc: fix 2x4x8 (interlaced) weight table

Browse Source 
Since the decoder has been fixed to output something similar to
other implementations, the encoder weight table needed this fix.

Reference PSNR values on a progressive sequence (from tiny_psnr)
from a chained encoding and decoding:
Full progressive: stddev:    0.74 PSNR: 50.69 MAXDIFF:   19
Before:           stddev:    1.43 PSNR: 44.97 MAXDIFF:   17
This patch:       stddev:    0.76 PSNR: 50.44 MAXDIFF:   14

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Christophe Gisquet 2015-01-30 19:43:03 +01:00 committed by Michael Niedermayer
parent 2a3b7a55b5
commit cb335b3af2
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libavcodec/dvenc.c
View File

@ -232,14 +232,14 @@ static const int dv_weight_88[64] = {
170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
};
static const int dv_weight_248[64] = {
131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
131072, 262144, 257107, 257107, 242189, 242189, 242189, 242189,
237536, 237536, 229376, 229376, 200636, 200636, 224973, 224973,
223754, 223754, 235923, 235923, 229376, 229376, 217965, 217965,
211916, 211916, 196781, 196781, 185364, 185364, 206433, 206433,
211916, 211916, 222935, 222935, 200636, 200636, 205964, 205964,
200704, 200704, 180568, 180568, 175557, 175557, 195068, 195068,
185364, 185364, 188995, 188995, 174606, 174606, 175557, 175557,
170627, 170627, 153560, 153560, 165371, 165371, 144651, 144651,
};
static av_always_inline int dv_init_enc_block(EncBlockInfo *bi, uint8_t *data,