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avcodec/ffv1enc: Fix size of first slice

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cff1c0edaa)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-12-09 00:19:19 +01:00
parent 47e47cfb07
commit aec21cd840
1 changed files with 9 additions and 4 deletions
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13
libavcodec/ffv1enc.c
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@ -1089,7 +1089,6 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
FFV1Context *f = avctx->priv_data;
RangeCoder *const c = &f->slice_context[0]->c;
AVFrame *const p = f->picture.f;
int used_count = 0;
uint8_t keystate = 128;
uint8_t *buf_p;
int i, ret;
@ -1178,11 +1177,17 @@ FF_ENABLE_DEPRECATION_WARNINGS
}
}
for (i = 1; i < f->slice_count; i++) {
for (i = 0; i < f->slice_count; i++) {
FFV1Context *fs = f->slice_context[i];
uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count;
int len = pkt->size / f->slice_count;
ff_init_range_encoder(&fs->c, start, len);
if (i) {
ff_init_range_encoder(&fs->c, start, len);
} else {
av_assert0(fs->c.bytestream_end >= fs->c.bytestream_start + len);
av_assert0(fs->c.bytestream < fs->c.bytestream_start + len);
fs->c.bytestream_end = fs->c.bytestream_start + len;
}
}
avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
f->slice_count, sizeof(void *));