Commit 41e1354c authored by Christophe Gisquet's avatar Christophe Gisquet Committed by Luca Barbato

proresenc: Properly account for alpha plane

The packet buffer allocation considers the alpha channel as DCT-coded,
while it is actually run-coded and thus requires a larger buffer.

CC: libav-stable@libav.org
Signed-off-by: 's avatarDiego Biurrun <diego@biurrun.de>
Signed-off-by: 's avatarLuca Barbato <lu_zero@gentoo.org>
parent 45ce880a
......@@ -1246,8 +1246,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
ctx->bits_per_mb = ls * 8;
if (ctx->chroma_factor == CFACTOR_Y444)
ctx->bits_per_mb += ls * 4;
if (ctx->num_planes == 4)
ctx->bits_per_mb += ls * 4;
}
ctx->frame_size_upper_bound = ctx->pictures_per_frame *
......@@ -1256,6 +1254,14 @@ static av_cold int encode_init(AVCodecContext *avctx)
(mps * ctx->bits_per_mb) / 8)
+ 200;
if (ctx->alpha_bits) {
// The alpha plane is run-coded and might exceed the bit budget.
ctx->frame_size_upper_bound += ctx->pictures_per_frame *
ctx->slices_per_picture *
/* num pixels per slice */ (ctx->mbs_per_slice * 256 *
/* bits per pixel */ (1 + ctx->alpha_bits + 1) + 7 >> 3);
}
avctx->codec_tag = ctx->profile_info->tag;
av_log(avctx, AV_LOG_DEBUG,
......
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