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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2014-08-18 14:15:24 +0000 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2014-08-18 18:58:01 +0200 |
| commit | 41e1354c101004ccd46dc08d3dd6e956e83a6b51 (patch) | |
| tree | a5ca85bddb18baf38c2d352571e869db641ad00d /libavcodec/proresenc.c | |
| parent | 45ce880a9b3e50cfa088f111dffaf8685bd7bc6b (diff) | |
| download | ffmpeg-41e1354c101004ccd46dc08d3dd6e956e83a6b51.tar.gz | |
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: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/proresenc.c')
| -rw-r--r-- | libavcodec/proresenc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libavcodec/proresenc.c b/libavcodec/proresenc.c index 262f0badc4..3a82c2c893 100644 --- a/libavcodec/proresenc.c +++ b/libavcodec/proresenc.c @@ -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, |