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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-08-31 19:55:28 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-09-01 11:05:38 +0200 |
| commit | aae499f77a1d9f9083486fc7d98baf63e0ab917f (patch) | |
| tree | 690e3f6654c1e274f3c78944b7fbe124d6d71941 /libavcodec/magicyuv.c | |
| parent | 7f452c099a47eb54131f4a36e6078471e24c39b4 (diff) | |
| download | ffmpeg-aae499f77a1d9f9083486fc7d98baf63e0ab917f.tar.gz | |
avcodec/magicyuv: Reuse array instead of using multiple arrays
The lengths of the VLC codes are implicitly contained in the VLC tables
itself; apart from that they are not used lateron. So it is unnecessary
to store them and the very same array can be reused to parse the Huffman
table for the next plane.
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/magicyuv.c')
| -rw-r--r-- | libavcodec/magicyuv.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/magicyuv.c b/libavcodec/magicyuv.c index 9282b39723..a16135e683 100644 --- a/libavcodec/magicyuv.c +++ b/libavcodec/magicyuv.c @@ -68,7 +68,7 @@ typedef struct MagicYUVContext { int vshift[4]; Slice *slices[4]; // slice bitstream positions for each plane unsigned int slices_size[4]; // slice sizes for each plane - uint8_t len[4][4096]; // table of code lengths for each plane + uint8_t len[4096]; // scratch table of code lengths VLC vlc[4]; // VLC for each plane int (*huff_build)(VLC *vlc, uint8_t *len); int (*magy_decode_slice)(AVCodecContext *avctx, void *tdata, @@ -465,11 +465,11 @@ static int build_huffman(AVCodecContext *avctx, GetBitContext *gbit, int max) } for (; j < k; j++) - s->len[i][j] = x; + s->len[j] = x; if (j == max) { j = 0; - if (s->huff_build(&s->vlc[i], s->len[i])) { + if (s->huff_build(&s->vlc[i], s->len)) { av_log(avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n"); return AVERROR_INVALIDDATA; } |