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| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-12-09 00:19:19 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-12-09 02:04:58 +0100 |
| commit | 0bcc7ea5dc243cae48e0b9c18b3bea717f184f6b (patch) | |
| tree | 2df2196d7edb7b218de19599a21dfaddd7052ef8 | |
| parent | b408dba231091cd7f465ddf8bd8babf5b7efe63a (diff) | |
| download | ffmpeg-0bcc7ea5dc243cae48e0b9c18b3bea717f184f6b.tar.gz | |
avcodec/ffv1enc: Fix size of first slice
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cff1c0edaa797eca96663d9b83e4b8c1b609ff19)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ffv1enc.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c index 42e59a1efc..55d32a07b4 100644 --- a/libavcodec/ffv1enc.c +++ b/libavcodec/ffv1enc.c @@ -1222,7 +1222,6 @@ 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; @@ -1307,11 +1306,17 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, } } - 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 *)); |