[FFmpeg-devel] [PATCH] Parsing ALS object type in MPEG-4

[Thilo Borgmann]

Thilo Borgmann schrieb:
> Alex Converse schrieb:
>> On Sun, Oct 11, 2009 at 5:04 AM, Thilo Borgmann
>> <thilo.borgmann at googlemail.com> wrote:
>>> Index: libavcodec/mpeg4audio.h
>>> ===================================================================
>>> --- libavcodec/mpeg4audio.h     (revision 20011)
>>> +++ libavcodec/mpeg4audio.h     (working copy)
>>> @@ -31,6 +31,7 @@
>>>     int sampling_index;
>>>     int sample_rate;
>>>     int chan_config;
>>> +    int channels;
>>>     int sbr; //< -1 implicit, 1 presence
>>>     int ext_object_type;
>>>     int ext_sampling_index;
>>> Index: libavformat/mov.c
>>> ===================================================================
>>> --- libavformat/mov.c   (revision 20011)
>>> +++ libavformat/mov.c   (working copy)
>>> @@ -434,9 +434,13 @@
>>>                 MPEG4AudioConfig cfg;
>>>                 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
>>>                                          st->codec->extradata_size);
>>> +                if (cfg.chan_config) {
>>>                 if (cfg.chan_config > 7)
>>>                     return -1;
>>>                 st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
>>> +                } else {
>>> +                    st->codec->channels = cfg.channels;
>>> +                }
>>>                 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
>>>                     st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
>>>                 else
>>>
>> These chunks have landed as part of r20512.
> 
> Yes, thanks for that :)
> 

What remains is handling ALS...

-Thilo
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