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| author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-02-15 12:08:11 +0000 |
|---|---|---|
| committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-02-15 15:36:59 +0000 |
| commit | 0aa2fbddb19035cd715130bc9b7c643e240ed74e (patch) | |
| tree | f919212e2d289d113eb424ac4005d29013b5e74e /libavcodec | |
| parent | c40983a6f631d22fede713d535bb9c31d5c9740c (diff) | |
| download | ffmpeg-0aa2fbddb19035cd715130bc9b7c643e240ed74e.tar.gz | |
vc2enc: fix use of uninitialized variables in the rate control system
Fixes: CID1352550
Fixes: CID1352549
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
(cherry picked from commit 7cdea450c67d24a3503a0eb64f491f58e474973f)
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/vc2enc.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/libavcodec/vc2enc.c b/libavcodec/vc2enc.c index 5472609efd..f42b10ffef 100644 --- a/libavcodec/vc2enc.c +++ b/libavcodec/vc2enc.c @@ -658,7 +658,8 @@ static int rate_control(AVCodecContext *avctx, void *arg) VC2EncContext *s = slice_dat->ctx; const int sx = slice_dat->x; const int sy = slice_dat->y; - int quant_buf[2], bits_buf[2], quant = s->q_start, range = s->q_start/3; + int bits_last = INT_MAX, quant_buf[2] = {-1, -1}; + int quant = s->q_start, range = s->q_start/3; const int64_t top = slice_dat->bits_ceil; const double percent = s->tolerance; const double bottom = top - top*(percent/100.0f); @@ -670,14 +671,13 @@ static int rate_control(AVCodecContext *avctx, void *arg) bits = count_hq_slice(s, sx, sy, quant); range = av_clip(range/2, 1, s->q_ceil); if (quant_buf[1] == quant) { - quant = bits_buf[0] < bits ? quant_buf[0] : quant; - bits = bits_buf[0] < bits ? bits_buf[0] : bits; + quant = bits_last < bits ? quant_buf[0] : quant; + bits = bits_last < bits ? bits_last : bits; break; } quant_buf[1] = quant_buf[0]; quant_buf[0] = quant; - bits_buf[1] = bits_buf[0]; - bits_buf[0] = bits; + bits_last = bits; } slice_dat->quant_idx = av_clip(quant, 0, s->q_ceil); slice_dat->bytes = FFALIGN((bits >> 3), s->size_scaler) + 4 + s->prefix_bytes; |