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avcodec/lead: support unaligned blocks 

Fixed ticket #10656.
This commit is contained in:
Peter Ross 2023-11-12 11:02:47 +11:00
parent 80131321c4
commit db975ff00d
1 changed files with 4 additions and 4 deletions
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8
libavcodec/leaddec.c
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@ -195,8 +195,8 @@ static int lead_decode_frame(AVCodecContext *avctx, AVFrame * frame,
init_get_bits8(&gb, s->bitstream_buf, size);
if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
for (int mb_y = 0; mb_y < avctx->height / 16; mb_y++)
for (int mb_x = 0; mb_x < avctx->width / 16; mb_x++)
for (int mb_y = 0; mb_y < (avctx->height + 15) / 16; mb_y++)
for (int mb_x = 0; mb_x < (avctx->width + 15) / 16; mb_x++)
for (int b = 0; b < (yuv20p_half ? 4 : 6); b++) {
int luma_block = yuv20p_half ? 2 : 4;
const VLCElem * dc_vlc = b < luma_block ? luma_dc_vlc : chroma_dc_vlc;
@ -228,8 +228,8 @@ static int lead_decode_frame(AVCodecContext *avctx, AVFrame * frame,
}
} else {
for (int f = 0; f < fields; f++)
for (int j = 0; j < avctx->height / fields / 8; j++)
for (int i = 0; i < avctx->width / 8; i++)
for (int j = 0; j < (avctx->height + 7) / fields / 8; j++)
for (int i = 0; i < (avctx->width + 7) / 8; i++)
for (int plane = 0; plane < 3; plane++) {
const VLCElem * dc_vlc = !plane ? luma_dc_vlc : chroma_dc_vlc;
int dc_bits = !plane ? LUMA_DC_BITS : CHROMA_DC_BITS;