dnxhddec: better support for 4:4:4

[ffmpeg] / libavcodec / mpegvideo.c

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index f28f7e886bcf79eceb5bd4b83d7cd9b8ebeaa10a..96634ec7b5e843e64167209d74ad6d83b6bb7ba2 100644 (file)
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -114,6 +114,9 @@ static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
     int i, level, nCoeffs;
     const uint16_t *quant_matrix;
 
+    if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
+    else                 qscale <<= 1;
+
     if(s->alternate_scan) nCoeffs= 63;
     else nCoeffs= s->block_last_index[n];
 
@@ -125,10 +128,10 @@ static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
         if (level) {
             if (level < 0) {
                 level = -level;
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (int)(level * qscale * quant_matrix[j]) >> 4;
                 level = -level;
             } else {
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (int)(level * qscale * quant_matrix[j]) >> 4;
             }
             block[j] = level;
         }
@@ -142,6 +145,9 @@ static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
     const uint16_t *quant_matrix;
     int sum=-1;
 
+    if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
+    else                 qscale <<= 1;
+
     if(s->alternate_scan) nCoeffs= 63;
     else nCoeffs= s->block_last_index[n];
 
@@ -154,10 +160,10 @@ static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
         if (level) {
             if (level < 0) {
                 level = -level;
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (int)(level * qscale * quant_matrix[j]) >> 4;
                 level = -level;
             } else {
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (int)(level * qscale * quant_matrix[j]) >> 4;
             }
             block[j] = level;
             sum+=level;
@@ -173,6 +179,9 @@ static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
     const uint16_t *quant_matrix;
     int sum=-1;
 
+    if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
+    else                 qscale <<= 1;
+
     if(s->alternate_scan) nCoeffs= 63;
     else nCoeffs= s->block_last_index[n];
 
@@ -184,11 +193,11 @@ static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
             if (level < 0) {
                 level = -level;
                 level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
+                         ((int) (quant_matrix[j]))) >> 5;
                 level = -level;
             } else {
                 level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
+                         ((int) (quant_matrix[j]))) >> 5;
             }
             block[j] = level;
             sum+=level;
@@ -1201,9 +1210,6 @@ int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         if (&s->picture[i] != s->last_picture_ptr &&
             &s->picture[i] != s->next_picture_ptr &&
             s->picture[i].reference && !s->picture[i].needs_realloc) {
-            if (!(avctx->active_thread_type & FF_THREAD_FRAME))
-                av_log(avctx, AV_LOG_ERROR,
-                       "releasing zombie picture\n");
             ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
         }
     }