[FFmpeg-devel] [Toy] Aura 1 and 2 decoder

[Kostya]

On Mon, Mar 16, 2009 at 07:24:58AM -0600, compn wrote:
> On Mon, 16 Mar 2009 09:32:59 +0200, Kostya wrote:
> >+    /* sanity check the buffer size: A buffer has 3x16-bytes tables
> >+     * followed by (height) lines each with 3 bytes to represent groups
> >+     * of 4 pixels. Thus, the total size of the buffer ought to be:
> >+     *    (3 * 16) + height * (width * 3 / 4) */
> >+    if (buf_size != 48 + s->height * s->width) {
> >+      av_log(avctx, AV_LOG_ERROR, "ffmpeg: cyuv: got a buffer with %d bytes when %d were expected\n",
> >+        buf_size,
> >+        48 + s->height * s->width);
> >+      return -1;
> >+    }
> 
> is it a good idea to quit if something unexpected comes along?

current policy is to try hard at interpreting it but this is rather old code

> btw i created a cyuv file which throws this error:
> http://samples.mplayerhq.hu/V-codecs/CYUV.AVI
> 
> [cyuv @ 00E10540]ffmpeg: cyuv: got a buffer with 153600 bytes when
> 57648 were expected
> Error while decoding frame!
> 
> not sure if its a valid file. created with ms vfw 1.1

Will check. Looks like it's either delta YUV422 (like aura2) or UYVY.

> -compn