On 08/06/18 05:18, James Almer wrote:
> On 6/7/2018 8:43 PM, Mark Thompson wrote:
>> +static int cbs_jpeg_write_unit(CodedBitstreamContext *ctx,
>> + CodedBitstreamUnit *unit)
>> +{
>> + CodedBitstreamJPEGContext *priv = ctx->priv_data;
>> + PutBitContext pbc;
>> + int err;
>> +
>> + if (!priv->write_buffer) {
>> + // Initial write buffer size is 1MB.
>> + priv->write_buffer_size = 1024 * 1024;
>> +
>> + reallocate_and_try_again:
>> + err = av_reallocp(&priv->write_buffer, priv->write_buffer_size);
>
> You could use av_fast_malloc() instead, since you don't care about the
> previous contents of the buffer. But it will make no real difference
> admittedly since at most it will be reallocated twice or thrice for
> really big files and that's it.
>
> I sent a patch implementing this change for the other modules some
> weeks, which i guess you didn't see and i forgot about :p
That seems reasonable, but we should probably split this whole write-buffer
stuff into a separate function so it doesn't keep being repeated in new places.
I'll leave it identical to the existing ones for now - if you'd like to pursue
the fast_malloc patch (which I think looks fine) then I'll change it to match,
and likewise if we can make a suitable new function.
Thanks,
- Mark
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