On 11/20/2013 12:26 PM, John Stebbins wrote:
> The a52 spec suggests that "partial compression" should scale the
> drc value in this manner.
> ---
> libavcodec/ac3dec.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
> index 6419208..586663c 100644
> --- a/libavcodec/ac3dec.c
> +++ b/libavcodec/ac3dec.c
> @@ -746,8 +746,8 @@ static int decode_audio_block(AC3DecodeContext *s, int
> blk)
> i = !s->channel_mode;
> do {
> if (get_bits1(gbc)) {
> - s->dynamic_range[i] = ((dynamic_range_tab[get_bits(gbc, 8)] -
> 1.0) *
> - s->drc_scale) + 1.0;
> + s->dynamic_range[i] = powf(dynamic_range_tab[get_bits(gbc, 8)],
> + s->drc_scale);
> } else if (blk == 0) {
> s->dynamic_range[i] = 1.0f;
> }
Looks ok.
-Justin
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