correct quantizer bias

Originally committed as revision 438 to svn://svn.ffmpeg.org/ffmpeg/trunk

correct quantizer bias
Originally committed as revision 438 to svn://svn.ffmpeg.org/ffmpeg/trunk
1c3a2382 · Michael Niedermayer · 0f9400b4 · 1c3a2382
隐藏空白更改
内联并排

Showing with 1 addition and 0 deletion

libavcodec/mjpeg.c libavcodec/mjpeg.c +1 -0

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--- a/libavcodec/mjpeg.c
+++ b/libavcodec/mjpeg.c
@@ -245,6 +245,7 @@ int mjpeg_init(MpegEncContext *s)
    
    s->min_qcoeff=-1023;
    s->max_qcoeff= 1023;
+    s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x

    /* build all the huffman tables */
    build_huffman_codes(m->huff_size_dc_luminance,