virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avcodec/wmadec: Check operations that can fail

Browse Source 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-05-06 17:28:50 +02:00
parent 35381d2201
commit bd1cbb5427
1 changed files with 23 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
libavcodec/wmadec.c
View File

@ -106,20 +106,31 @@ static av_cold int wma_decode_init(AVCodecContext *avctx)
return ret;
/* init MDCT */
for (i = 0; i < s->nb_block_sizes; i++)
ff_mdct_init(&s->mdct_ctx[i], s->frame_len_bits - i + 1, 1, 1.0 / 32768.0);
if (s->use_noise_coding) {
ff_init_vlc_from_lengths(&s->hgain_vlc, HGAINVLCBITS, FF_ARRAY_ELEMS(ff_wma_hgain_hufftab),
&ff_wma_hgain_hufftab[0][1], 2,
&ff_wma_hgain_hufftab[0][0], 2, 1, -18, 0, avctx);
for (i = 0; i < s->nb_block_sizes; i++) {
ret = ff_mdct_init(&s->mdct_ctx[i], s->frame_len_bits - i + 1,
1, 1.0 / 32768.0);
if (ret < 0)
return ret;
}
if (s->use_exp_vlc)
init_vlc(&s->exp_vlc, EXPVLCBITS, sizeof(ff_aac_scalefactor_bits), // FIXME move out of context
ff_aac_scalefactor_bits, 1, 1,
ff_aac_scalefactor_code, 4, 4, 0);
else
if (s->use_noise_coding) {
ret = ff_init_vlc_from_lengths(&s->hgain_vlc, HGAINVLCBITS,
FF_ARRAY_ELEMS(ff_wma_hgain_hufftab),
&ff_wma_hgain_hufftab[0][1], 2,
&ff_wma_hgain_hufftab[0][0], 2, 1,
-18, 0, avctx);
if (ret < 0)
return ret;
}
if (s->use_exp_vlc) {
// FIXME move out of context
ret = init_vlc(&s->exp_vlc, EXPVLCBITS, sizeof(ff_aac_scalefactor_bits),
ff_aac_scalefactor_bits, 1, 1,
ff_aac_scalefactor_code, 4, 4, 0);
if (ret < 0)
return ret;
} else
wma_lsp_to_curve_init(s, s->frame_len);
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;