Sean McGovern:
> Hi,
>
> On Mon, Feb 26, 2024 at 6:48 PM Andreas Rheinhardt
> <andreas.rheinha...@outlook.com> wrote:
>>
>> Fixes the dxv3enc-dxt1 FATE test with UBSan.
>>
>> Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
>> ---
>> I have not actually tested whether the output is actually wrong
>> on BE systems. Would be nice if someone could.
>>
>> libavcodec/dxvenc.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/libavcodec/dxvenc.c b/libavcodec/dxvenc.c
>> index 1ce2b1d014..3f28fb696a 100644
>> --- a/libavcodec/dxvenc.c
>> +++ b/libavcodec/dxvenc.c
>> @@ -149,7 +149,7 @@ typedef struct DXVEncContext {
>> } else {
>> \
>> op = 0;
>> \
>> }
>> \
>> - *value |= (op << (state * 2));
>> \
>> + AV_WL32(value, AV_RL32(value) | (op << (state * 2)));
>> \
>> state++;
>> \
>> } while (0)
>>
>> @@ -157,7 +157,7 @@ static int dxv_compress_dxt1(AVCodecContext *avctx)
>> {
>> DXVEncContext *ctx = avctx->priv_data;
>> PutByteContext *pbc = &ctx->pbc;
>> - uint32_t *value;
>> + void *value;
>> uint32_t color, lut, idx, color_idx, lut_idx, prev_pos, state = 16, pos
>> = 2, op = 0;
>>
>> ht_init(ctx->color_lookback_ht);
>
> Confirming that this does fix the failing test on a big-endian PowerPC
> + Altivec virtual machine.
>
Thanks for testing, applied the patch with James' suggested modification.
- Andreas
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