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avcodec/hevc_parser: fix missing zero_byte at frame beginning 

The start code is matched against 0x000001, zero_byte was treated
as last byte of last frame rather than the beginning of next frame.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili 2023-12-27 23:30:16 +08:00
parent b7ac1f9856
commit 0f824d792d
2 changed files with 5 additions and 1 deletions
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4
libavcodec/hevc_parser.c
View File

@ -278,6 +278,8 @@ static int hevc_find_frame_end(AVCodecParserContext *s, const uint8_t *buf,
(nut >= 41 && nut <= 44) || (nut >= 48 && nut <= 55)) {
if (pc->frame_start_found) {
pc->frame_start_found = 0;
if (!((pc->state64 >> 6 * 8) & 0xFF))
return i - 6;
return i - 5;
}
} else if (nut <= HEVC_NAL_RASL_R ||
@ -288,6 +290,8 @@ static int hevc_find_frame_end(AVCodecParserContext *s, const uint8_t *buf,
pc->frame_start_found = 1;
} else { // First slice of next frame found
pc->frame_start_found = 0;
if (!((pc->state64 >> 6 * 8) & 0xFF))
return i - 6;
return i - 5;
}
}

2
tests/fate/hevc.mak
View File

@ -222,7 +222,7 @@ FATE_HEVC-$(call ALLYES, HEVC_DEMUXER MOV_DEMUXER HEVC_PARSER HEVC_MP4TOANNEXB_B
fate-hevc-bsf-mp4toannexb: tests/data/hevc-mp4.mov
fate-hevc-bsf-mp4toannexb: CMD = md5 -i $(TARGET_PATH)/tests/data/hevc-mp4.mov -c:v copy -fflags +bitexact -f hevc
fate-hevc-bsf-mp4toannexb: CMP = oneline
fate-hevc-bsf-mp4toannexb: REF = 1873662a3af1848c37e4eb25722c8df9
fate-hevc-bsf-mp4toannexb: REF = 73019329ed7f81c24f9af67c34c640c0
fate-hevc-skiploopfilter: CMD = framemd5 -skip_loop_filter nokey -i $(TARGET_SAMPLES)/hevc-conformance/SAO_D_Samsung_5.bit -sws_flags bitexact
FATE_HEVC-$(call FRAMEMD5, HEVC, HEVC, HEVC_PARSER) += fate-hevc-skiploopfilter