Re: [FFmpeg-devel] [PATCH] libavformat/mpegts.c: ignore a section with next flag

[TADANO Tokumei <aimingoff@pc.nifty.jp>]

sorry, I don't have permission to push the commits.
I've misunderstood the Developer Document.

On 2022/04/07 18:26, TADANO Tokumei wrote:
> will apply
> 
> On 2022/04/03 19:23, TADANO Tokumei wrote:
>> 'current_next_indicator' of 0 (next) on each section header indicates
>> the service information is for immediate future one.
>> ffmpeg doesn't need to parse it but current (1) one.
>>
>> ref: section 5.1.1 of DVB BlueBook A038 (EN 300 468)
>>
>> Signed-off-by: TADANO Tokumei <aimingoff@pc.nifty.jp>
>> ---
>>   libavformat/mpegts.c | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
>> index ecffb01562..49f7735123 100644
>> --- a/libavformat/mpegts.c
>> +++ b/libavformat/mpegts.c
>> @@ -645,6 +645,7 @@ typedef struct SectionHeader {
>>       uint8_t tid;
>>       uint16_t id;
>>       uint8_t version;
>> +    uint8_t current_next;
>>       uint8_t sec_num;
>>       uint8_t last_sec_num;
>>   } SectionHeader;
>> @@ -773,6 +774,7 @@ static int parse_section_header(SectionHeader *h,
>>       if (val < 0)
>>           return val;
>>       h->version = (val >> 1) & 0x1f;
>> +    h->current_next = val & 0x01;
>>       val = get8(pp, p_end);
>>       if (val < 0)
>>           return val;
>> @@ -2332,6 +2334,8 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
>>           return;
>>       if (h->tid != PMT_TID)
>>           return;
>> +    if (!h->current_next)
>> +        return;
>>       if (skip_identical(h, tssf))
>>           return;
>> @@ -2541,6 +2545,8 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
>>           return;
>>       if (h->tid != PAT_TID)
>>           return;
>> +    if (!h->current_next)
>> +        return;
>>       if (ts->skip_changes)
>>           return;
>> @@ -2679,6 +2685,8 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
>>           return;
>>       if (h->tid != SDT_TID)
>>           return;
>> +    if (!h->current_next)
>> +        return;
>>       if (ts->skip_changes)
>>           return;
>>       if (skip_identical(h, tssf))
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