Re: [FFmpeg-devel] [PATCH v4 0/4] add ARIB caption decoder using libaribcaption

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

ping again!

Are there any objections to this patch set?
If not, would someone push it to the repository?

On 2022/06/08 18:48, TADANO Tokumei wrote:
> ping
> 
> The patch set has been well tested by Japanese ISDB-related developers and works fine.
> I think it already has good quality to merge.
> 
> It requires external library like libaribb24, but the feature is disabled by default.
> There is no impact to current code without `--enable-libaribcaption` option is
> specified at configuration. The patch set provide better subtitle feature
> for ISDB users than libaribb24 if enabled.
> 
> On 2022/05/30 23:55, TADANO Tokumei wrote:
>> This patch set add another ARIB caption decoder using libaribcaption
>> external library: https://github.com/xqq/libaribcaption
>> The library decodes subtitles of ISDB-based TV broadcasting.
>> It is not only for Japanese ARIB STD-B24 caption, but also for
>> Brazilian ABNT NBR 15606-1 and Philippines version of ISDB-T.
>>
>> Unlike libaribb24, it supports 3 types of subtitle outputs:
>> * text: plain text
>> * ass: ASS formatted text
>> * bitmap: bitmap image
>>
>> Default subtitle type is ASS as same as libaribb24, but it can
>> be changed by `-sub_type` option.
>> You can see ARIB caption with ffplay tool:
>>    ffplay -sub_type bitmap MPEG.TS
>>
>> Sample files exist under:
>>    https://streams.videolan.org/streams/ts/ARIB/
>> Some of them are encrypted and some don't contain ARIB caption data.
>> Good samples for ARIB caption are:
>>    brazil/07-25_20-33-35_UCV - HD_.ts
>>    japan/channel2[137]_clear.ts
>>
>> ---
>> v4: reflect review results from outside of this ML.
>>    - resize bitmap subtitle image to display fonts with correct aspect ratio
>>    - multiple font families can be specified by '-font' option
>>    - remove 'rendering_backend' option
>>    - add document
>>    - minor bug fixes
>> v3: combine former 1/4 and 2/4 due to the patchwork shows build error.
>> v2: combine former 1/5 and 2/5 due to the patchwork shows build error.
>>    - fix help option content which incorrectly separated to 2 lines in 2/4.
>>    - amend commit message of 4/4.
>>
>> TADANO Tokumei (4):
>>    lavc/libaribcaption.c: add ARIB caption decoder using libaribcaption
>>    lavc/codec_desc.c: remove AV_CODEC_PROP_TEXT_SUB property
>>    lavf/mpegts.c: set some properties for ARIB caption
>>    doc/decoders.texi: add document of aribcaption decoder
>>
>>   configure                   |    4 +
>>   doc/decoders.texi           |   99 +++
>>   libavcodec/Makefile         |    1 +
>>   libavcodec/allcodecs.c      |    1 +
>>   libavcodec/codec_desc.c     |    1 -
>>   libavcodec/libaribb24.c     |    1 +
>>   libavcodec/libaribcaption.c | 1137 +++++++++++++++++++++++++++++++++++
>>   libavformat/mpegts.c        |   19 +-
>>   8 files changed, 1261 insertions(+), 2 deletions(-)
>>   create mode 100644 libavcodec/libaribcaption.c
>>
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