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vp9: Parse subsampling and report missing feature

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This commit is contained in:
Vittorio Giovara 2015-05-27 15:06:57 +01:00
parent d68c05380c
commit 3f38d4b816
2 changed files with 25 additions and 1 deletions
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24
libavcodec/vp9.c
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@ -219,7 +219,29 @@ static int decode_frame_header(AVCodecContext *avctx,
return AVERROR_INVALIDDATA;
}
s->fullrange = get_bits1(&s->gb);
// for profile 1, here follows the subsampling bits
// subsampling bits
if (s->profile == 1 || s->profile == 3) {
s->sub_x = get_bits1(&s->gb);
s->sub_y = get_bits1(&s->gb);
if (s->sub_x && s->sub_y) {
av_log(avctx, AV_LOG_ERROR,
"4:2:0 color not supported in profile 1 or 3\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(&s->gb)) { // reserved bit
av_log(avctx, AV_LOG_ERROR, "Reserved bit should be zero\n");
return AVERROR_INVALIDDATA;
}
} else {
s->sub_x = s->sub_y = 1;
}
if (!s->sub_x || !s->sub_y) {
avpriv_report_missing_feature(avctx, "Subsampling %d:%d",
s->sub_x, s->sub_y);
return AVERROR_PATCHWELCOME;
}
s->refreshrefmask = 0xff;
w = get_bits(&s->gb, 16) + 1;
h = get_bits(&s->gb, 16) + 1;

2
libavcodec/vp9.h
View File

@ -277,6 +277,8 @@ typedef struct VP9Context {
uint8_t use_last_frame_mvs;
uint8_t errorres;
uint8_t colorspace;
uint8_t sub_x;
uint8_t sub_y;
uint8_t fullrange;
uint8_t intraonly;
uint8_t resetctx;