mirror of https://git.ffmpeg.org/ffmpeg.git
dvenc: fix 2x4x8 (interlaced) weight table
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>
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@ -232,14 +232,14 @@ static const int dv_weight_88[64] = {
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170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
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};
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static const int dv_weight_248[64] = {
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131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
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224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
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211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
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242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
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200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
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229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
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175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
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195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
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131072, 262144, 257107, 257107, 242189, 242189, 242189, 242189,
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237536, 237536, 229376, 229376, 200636, 200636, 224973, 224973,
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223754, 223754, 235923, 235923, 229376, 229376, 217965, 217965,
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211916, 211916, 196781, 196781, 185364, 185364, 206433, 206433,
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211916, 211916, 222935, 222935, 200636, 200636, 205964, 205964,
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200704, 200704, 180568, 180568, 175557, 175557, 195068, 195068,
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185364, 185364, 188995, 188995, 174606, 174606, 175557, 175557,
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170627, 170627, 153560, 153560, 165371, 165371, 144651, 144651,
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};
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static av_always_inline int dv_init_enc_block(EncBlockInfo *bi, uint8_t *data,
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