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lavc/riffenc: Fix msrle support on Windows 95

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This commit is contained in:
Tomas Härdin 2023-06-08 11:55:28 +02:00
parent 2cac3fd744
commit 4cc40c050a
1 changed files with 4 additions and 2 deletions
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6
libavformat/riffenc.c
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@ -239,14 +239,16 @@ void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par,
/* depth */
avio_wl16(pb, par->bits_per_coded_sample ? par->bits_per_coded_sample : 24);
/* compression type */
avio_wl32(pb, par->codec_tag);
// MSRLE compatibility with Media Player 3.1 and Windows 95
avio_wl32(pb, par->codec_id == AV_CODEC_ID_MSRLE ? 1 : par->codec_tag);
avio_wl32(pb, (par->width * par->height * (par->bits_per_coded_sample ? par->bits_per_coded_sample : 24)+7) / 8);
avio_wl32(pb, 0);
avio_wl32(pb, 0);
/* Number of color indices in the color table that are used.
* A value of 0 means 2^biBitCount indices, but this doesn't work
* with Windows Media Player and files containing xxpc chunks. */
avio_wl32(pb, pal_avi ? 1 << par->bits_per_coded_sample : 0);
// MSRLE on Windows 95 requires a zero here
avio_wl32(pb, pal_avi && par->codec_id != AV_CODEC_ID_MSRLE ? 1 << par->bits_per_coded_sample : 0);
avio_wl32(pb, 0);
if (!ignore_extradata) {