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Thu Jan 25 19:02:40 CET 2007 · https://ffmpeg.org/pipermail/ffmpeg-devel/2007-January/028016.html

Michael Niedermayer wrote:
> Hi
> 
> On Sun, Jan 14, 2007 at 10:44:34PM +0100, Baptiste Coudurier wrote:
>> Michael Niedermayer wrote:
>>> Hi
>>>
>>> On Sun, Jan 14, 2007 at 01:51:29PM +0100, Baptiste Coudurier wrote:
>>>> Hi
>>>>
>>>> Michael Niedermayer wrote:
>>>>> Hi
>>>>>
>>>>> On Sun, Jan 14, 2007 at 01:39:27AM +0100, Baptiste Coudurier wrote:
>>>>>> Hi
>>>>>>
>>>>>> Here is a patch to support waveformatextensible header.
>>>>>> Only four first byte of GUID are needed, and they seem to match twocc.
>>>>> [...]
>>>>>
>>>>> cosmetics must be in seperate patches
>>>>>
>>>> Ok. Here it is.
>>> [...]
>>>
>>>> -    codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
>>>> -
>>>>      if (size > 16) {  /* We're obviously dealing with WAVEFORMATEX */
>>>> -        codec->extradata_size = get_le16(pb);
>>>> +        int cbSize = get_le16(pb);
>>>> +        if (id == 0xfffe) {
>>>> +            codec->bits_per_sample = get_le16(pb);
>>>> +            get_le32(pb); /* dwChannelMask */
>>>> +            id = get_le32(pb); /* 4 first bytes of GUID */
>>>> +            cbSize = 10; /* skip remaining bytes */
>>> why? why not read them in extradata?
>>>
>> What would you do with 12 last bytes of GUID in extradata ?
> 
> nothing but maybe i want the 13th and later bytes
> 

Like that ?

-- 
Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
SMARTJOG S.A.                                    http://www.smartjog.com
Key fingerprint                 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA
Phone: +33 1 49966312
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[Ffmpeg-devel] [PATCH] waveformatetensible support