4xm: clear FF_INPUT_BUFFER_PADDING_SIZE bytes in temporary buffers

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
14 years ago · 8d518a9c4f
parent dc64f203a6
commit 8d518a9c4f
1 changed files with 2 additions and 0 deletions
--- a/libavcodec/4xm.c
+++ b/libavcodec/4xm.c
@ -399,6 +399,7 @@ static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
    if (!f->bitstream_buffer)
        return AVERROR(ENOMEM);
    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);
+    memset((uint8_t*)f->bitstream_buffer + bitstream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
    init_get_bits(&f->gb, f->bitstream_buffer, 8*bitstream_size);

    f->wordstream= (const uint16_t*)(buf + extra + bitstream_size);
@ -679,6 +680,7 @@ static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){
    if (!f->bitstream_buffer)
        return AVERROR(ENOMEM);
    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);
+    memset((uint8_t*)f->bitstream_buffer + prestream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
    init_get_bits(&f->pre_gb, f->bitstream_buffer, 8*prestream_size);

    f->last_dc= 0*128*8*8;