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Make sure that dv encoder initializes all encoded packet data.

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The specification does not say which value to use for unused
parts, so fill all unused bytes with 0xff, which is consistent
with what DV usually uses for reserved or unused parts.

Originally committed as revision 20084 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-09-29 19:17:18 +00:00
parent 8a8720c1bb
commit ebb651d5f2
4 changed files with 17 additions and 8 deletions
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11
libavcodec/dv.c
View File

@ -1102,8 +1102,17 @@ static int dv_encode_video_segment(AVCodecContext *avctx, void *arg)
av_log(NULL, AV_LOG_ERROR, "ac bitstream overflow\n");
}
for (j=0; j<5*s->sys->bpm; j++)
for (j=0; j<5*s->sys->bpm; j++) {
int pos;
int size = pbs[j].size_in_bits >> 3;
flush_put_bits(&pbs[j]);
pos = put_bits_count(&pbs[j]) >> 3;
if (pos > size) {
av_log(avctx, AV_LOG_ERROR, "bitstream written beyond buffer size\n");
return -1;
}
memset(pbs[j].buf + pos, 0xff, size - pos);
}
return 0;
}

2
tests/lavf.regression.ref
View File

@ -30,7 +30,7 @@ b3174e2db508564c1cce0b5e3c1bc1bd *./tests/data/b-lavf.mxf_d10
c145305a775eb2de43cdf94eb1ab5240 *./tests/data/b-lavf.mov
357669 ./tests/data/b-lavf.mov
./tests/data/b-lavf.mov CRC=0x2f6a9b26
31f115e7106265a7a7cea7f4fcf5c329 *./tests/data/b-lavf.dv
522e5e5a46b99f8ad8aabdaf3d2f1869 *./tests/data/b-lavf.dv
3600000 ./tests/data/b-lavf.dv
./tests/data/b-lavf.dv CRC=0x02c0af30
bf5c730bb8426dbcfc5420e71ee490f2 *./tests/data/b-lavf.gxf

6
tests/rotozoom.regression.ref
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@ -150,15 +150,15 @@ a8fccf278bbb17d37a756ecf11672b09 *./tests/data/a-snow53.avi
2721758 ./tests/data/a-snow53.avi
dde5895817ad9d219f79a52d0bdfb001 *./tests/data/snowll.rotozoom.out.yuv
stddev: 0.00 PSNR:999.99 bytes: 7603200/ 7603200
02c85b9bebb23f147ef598da7bcbf736 *./tests/data/a-dv.dv
bfa766f89bfeabc0ae1044f3954bed52 *./tests/data/a-dv.dv
7200000 ./tests/data/a-dv.dv
7ec62bd3350a6848364669e6e1e4b9cc *./tests/data/dv.rotozoom.out.yuv
stddev: 1.71 PSNR: 43.46 bytes: 7603200/ 7603200
203e50e75a43fb1b26e1b53d99e1de4f *./tests/data/a-dv411.dv
00a9d8683ac6826af41bcf7223fb0389 *./tests/data/a-dv411.dv
7200000 ./tests/data/a-dv411.dv
7f9fa421028aabb11eaf4c6513a5a843 *./tests/data/dv.rotozoom.out.yuv
stddev: 10.09 PSNR: 28.04 bytes: 7603200/ 7603200
2bae05531a24cd6764eefba64db345bc *./tests/data/a-dv50.dv
61e31c79e8949b25c849753a0785b0d7 *./tests/data/a-dv50.dv
14400000 ./tests/data/a-dv50.dv
af3f2dd5ab62c1a1d98b07d4aeb6852f *./tests/data/dv50.rotozoom.out.yuv
stddev: 0.82 PSNR: 49.81 bytes: 7603200/ 7603200

6
tests/vsynth.regression.ref
View File

@ -150,15 +150,15 @@ stddev: 22.77 PSNR: 20.97 bytes: 7603200/ 7603200
3419980 ./tests/data/a-snow53.avi
c5ccac874dbf808e9088bc3107860042 *./tests/data/snowll.vsynth.out.yuv
stddev: 0.00 PSNR:999.99 bytes: 7603200/ 7603200
1482a23e323277f1ff67a29dd07b158d *./tests/data/a-dv.dv
27ade3031b17214cf81c19cbf70f37d7 *./tests/data/a-dv.dv
7200000 ./tests/data/a-dv.dv
02ac7cdeab91d4d5621e7ce96dddc498 *./tests/data/dv.vsynth.out.yuv
stddev: 6.90 PSNR: 31.33 bytes: 7603200/ 7603200
ec643f879ccc4d53d285712ec25b5d32 *./tests/data/a-dv411.dv
bd67f2431db160d4bb6dcd791cea6efd *./tests/data/a-dv411.dv
7200000 ./tests/data/a-dv411.dv
b6640a3a572353f51284acb746eb00c4 *./tests/data/dv.vsynth.out.yuv
stddev: 30.76 PSNR: 18.36 bytes: 7603200/ 7603200
2a0eace8da46f0061493677deb1fd66d *./tests/data/a-dv50.dv
26dba84f0ea895b914ef5b333d8394ac *./tests/data/a-dv50.dv
14400000 ./tests/data/a-dv50.dv
a2ff093e93ffed10f730fa21df02fc50 *./tests/data/dv50.vsynth.out.yuv
stddev: 1.72 PSNR: 43.37 bytes: 7603200/ 7603200