diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c index 85d5fa3e7a..5809052cf8 100644 --- a/libavcodec/indeo4.c +++ b/libavcodec/indeo4.c @@ -260,12 +260,14 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx) * @param[in] avctx pointer to the AVCodecContext * @return result code: 0 = OK, negative number = error */ -static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, +static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *arg_band, AVCodecContext *avctx) { int plane, band_num, indx, transform_id, scan_indx; int i; int quant_mat; + IVIBandDesc temp_band, *band = &temp_band; + memcpy(&temp_band, arg_band, sizeof(temp_band)); plane = get_bits(&ctx->gb, 2); band_num = get_bits(&ctx->gb, 4); @@ -395,10 +397,10 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, /* decode block huffman codebook */ if (!get_bits1(&ctx->gb)) - band->blk_vlc.tab = ctx->blk_vlc.tab; + arg_band->blk_vlc.tab = ctx->blk_vlc.tab; else if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF, - &band->blk_vlc, avctx)) + &arg_band->blk_vlc, avctx)) return AVERROR_INVALIDDATA; /* select appropriate rvmap table for this band */ @@ -439,6 +441,9 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, return AVERROR_INVALIDDATA; } + band->blk_vlc = arg_band->blk_vlc; + memcpy(arg_band, band, sizeof(*arg_band)); + return 0; }