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avcodec/bink: add 'k' version support

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This commit is contained in:
Paul B Mahol 2018-07-18 21:17:29 +02:00
parent 251329fa76
commit 1b0922584e
1 changed files with 21 additions and 0 deletions
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21
libavcodec/bink.c
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@ -371,11 +371,19 @@ static const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 };
static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
{
BinkContext * const c = avctx->priv_data;
int t, v;
int last = 0;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
if (c->version == 'k') {
t ^= 0xBBu;
if (t == 0) {
b->cur_dec = NULL;
return 0;
}
}
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(avctx, AV_LOG_ERROR, "Too many block type values\n");
@ -994,6 +1002,17 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb,
int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
int width = c->avctx->width >> is_chroma;
int height = c->avctx->height >> is_chroma;
if (c->version == 'k' && get_bits1(gb)) {
int fill = get_bits(gb, 8);
dst = frame->data[plane_idx];
for (i = 0; i < height; i++)
memset(dst + i * stride, fill, width);
goto end;
}
init_lengths(c, FFMAX(width, 8), bw);
for (i = 0; i < BINK_NB_SRC; i++)
@ -1190,6 +1209,8 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb,
}
}
}
end:
if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));