[FFmpeg-devel] [PATCH] avformat: add TiVo ty demuxer

[Paul B Mahol]

On 11/2/17, Michael Niedermayer <michael at niedermayer.cc> wrote:
> On Wed, Nov 01, 2017 at 02:40:27PM +0100, Paul B Mahol wrote:
>> Signed-off-by: Paul B Mahol <onemda at gmail.com>
>> ---
>>  libavformat/Makefile     |   1 +
>>  libavformat/allformats.c |   1 +
>>  libavformat/ty.c         | 775
>> +++++++++++++++++++++++++++++++++++++++++++++++
>>  3 files changed, 777 insertions(+)
>>  create mode 100644 libavformat/ty.c
>
> [...]
>
>> +static int64_t get_pts(const uint8_t *buf)
>> +{
>> +    int a = buf[0] & 0xe >> 1;
>> +    int b = AV_RB16(buf + 1);
>> +    int c = AV_RB16(buf + 3);
>> +
>> +    if (!(1 & a & b & c))
>> +        return AV_NOPTS_VALUE;
>> +
>> +    a >>= 1;
>> +    b >>= 1;
>> +    c >>= 1;
>> +    return (((uint64_t)a) << 30) | (b << 15) | c;
>> +}
>
> duplicate of ff_parse_pes_pts()
>
> i didnt check most of the code but seeing this, i wonder how much
> more mpeg demuxing this duplicates ?

Only PES stuff.