[FFmpeg-devel] [PATCH] add color table for 8-bit gray scale raw image data

[Ray]

From: unknown <2010263...@qq.com>

---
 libavformat/riffenc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/libavformat/riffenc.c b/libavformat/riffenc.c
index c04d55c423..e33bcdb339 100644
--- a/libavformat/riffenc.c
+++ b/libavformat/riffenc.c
@@ -242,6 +242,15 @@ void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters 
*par,
     avio_wl32(pb, pal_avi ? 1 << par->bits_per_coded_sample : 0);
     avio_wl32(pb, 0);
 
+       if (par->bits_per_coded_sample == 8) {
+               for(int i=0; i<256; i++) {
+                       avio_w8(pb,i);
+                       avio_w8(pb,i);
+                       avio_w8(pb,i);
+                       avio_w8(pb,0);
+               }
+       }
+
     if (!ignore_extradata) {
         if (par->extradata_size) {
             avio_write(pb, par->extradata, extradata_size);
-- 
2.30.1 (Apple Git-130)

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