generic-library/ffmpeg
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h264: some fields in SEIs are longer than 25 bits thus use get_bits_long()

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2012-04-23 19:41:46 +02:00
parent 1e43786b4c
commit 068d0b4e25
1 changed files with 4 additions and 4 deletions
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8
libavcodec/h264_sei.c
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@@ -47,8 +47,8 @@ void ff_h264_reset_sei(H264Context *h) {
static int decode_picture_timing(H264Context *h){ static int decode_picture_timing(H264Context *h){
MpegEncContext * const s = &h->s; MpegEncContext * const s = &h->s;
if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){ if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){
h->sei_cpb_removal_delay = get_bits(&s->gb, h->sps.cpb_removal_delay_length); h->sei_cpb_removal_delay = get_bits_long(&s->gb, h->sps.cpb_removal_delay_length);
h->sei_dpb_output_delay = get_bits(&s->gb, h->sps.dpb_output_delay_length); h->sei_dpb_output_delay = get_bits_long(&s->gb, h->sps.dpb_output_delay_length);
} }
if(h->sps.pic_struct_present_flag){ if(h->sps.pic_struct_present_flag){
unsigned int i, num_clock_ts; unsigned int i, num_clock_ts;
@@ -146,13 +146,13 @@ static int decode_buffering_period(H264Context *h){
// NOTE: This is really so duplicated in the standard... See H.264, D.1.1 // NOTE: This is really so duplicated in the standard... See H.264, D.1.1
if (sps->nal_hrd_parameters_present_flag) { if (sps->nal_hrd_parameters_present_flag) {
for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) { for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length); h->initial_cpb_removal_delay[sched_sel_idx] = get_bits_long(&s->gb, sps->initial_cpb_removal_delay_length);
skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
} }
} }
if (sps->vcl_hrd_parameters_present_flag) { if (sps->vcl_hrd_parameters_present_flag) {
for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) { for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length); h->initial_cpb_removal_delay[sched_sel_idx] = get_bits_long(&s->gb, sps->initial_cpb_removal_delay_length);
skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
} }
} }