[FFmpeg-devel] Merging AV_CODEC_ID_IFF_ILBM and AV_CODEC_ID_IFF_BYTERUN1

[Paul B Mahol]

On 11/21/12, Peter Ross <pross at xvid.org> wrote:
> Currently the IFF bitmap decoder is split across two AV_CODEC_IDs.
> Bitmaps with compression type 0 got to AV_CODEC_ID_IFF_ILBM, and
> compression type 1 goes to AV_CODEC_ID_BYTERUN1.
>
> The compression type value is passed to the decoder via an extra-data
> structure, so the separate AV_CODEC_IDs are not required. (Early
> on this wasn't the case).
>
> How could the decoders be merged without breaking API compatibility.
> There is at least one more compression type that I would like to add to
> the IFF bitmap. Adding yet another AV_CODEC_ID for this would seem silly.

And would make supporting ANIMs that may change (from one compression type to
another impossible - like ilbm <-> byterun1 but I yet have to find such sample).

Proposed solution: add new codec id and use it in our lavf, others keep just
for compatibility sake.
>
> Cheers,
>
> -- Peter
> (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
>