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avformat/apm: use the entire APMState structure as extradata

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Is the "actual" codec extradata instead of the hand-crafted one
from the previous revision.
This commit is contained in:
Zane van Iperen 2020-07-08 00:42:09 +10:00
parent 3bf1be2101
commit 1b0a0da63a
1 changed files with 4 additions and 5 deletions
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9
libavformat/apm.c
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@ -26,6 +26,7 @@
#define APM_FILE_HEADER_SIZE 18
#define APM_FILE_EXTRADATA_SIZE 80
#define APM_EXTRADATA_SIZE 28
#define APM_MAX_READ_SIZE 4096
@ -160,13 +161,11 @@ static int apm_read_header(AVFormatContext *s)
return AVERROR_PATCHWELCOME;
}
if ((ret = ff_alloc_extradata(st->codecpar, 16)) < 0)
if ((ret = ff_alloc_extradata(st->codecpar, APM_EXTRADATA_SIZE)) < 0)
return ret;
AV_WL32(st->codecpar->extradata + 0, vs12.state.predictor_l);
AV_WL32(st->codecpar->extradata + 4, vs12.state.step_index_l);
AV_WL32(st->codecpar->extradata + 8, vs12.state.predictor_r);
AV_WL32(st->codecpar->extradata + 12, vs12.state.step_index_r);
/* Use the entire state as extradata. */
memcpy(st->codecpar->extradata, buf + 20, APM_EXTRADATA_SIZE);
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
st->start_time = 0;