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proresenc_kostya: properly account for alpha

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The packet buffer allocation considered as dct-coded, while it is
actually run-coded and thus requires a larger buffer.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 117bc8e6ff)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Christophe Gisquet
2014-08-11 19:43:27 +02:00
committed by Michael Niedermayer
parent 57a6cd8ab1
commit caf08defa6
1 changed files with 8 additions and 2 deletions
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10
libavcodec/proresenc_kostya.c
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@@ -1193,8 +1193,6 @@ 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 *
@@ -1203,6 +1201,14 @@ static av_cold int encode_init(AVCodecContext *avctx)
(mps * ctx->bits_per_mb) / 8)
+ 200;
if (ctx->alpha_bits) {
// alpha plane is run-coded and might run over 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,