doc/filters: document new feature

[ffmpeg] / libavcodec / svq3.c

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index fc17081ecf412e8773c357a72df73f1e1b4cd814..9cea9ac840f0d8dce2b142bcc92b950dc8efe8bd 100644 (file)
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1064,16 +1064,15 @@ static int svq3_decode_slice_header(AVCodecContext *avctx)
         av_log(s->avctx, AV_LOG_ERROR, "illegal slice type %u \n", slice_id);
         return -1;
     }
-    if (get_bits1(&s->gb_slice)) {
-        avpriv_report_missing_feature(s->avctx, "Media key encryption");
-        return AVERROR_PATCHWELCOME;
-    }
 
     s->slice_type = ff_h264_golomb_to_pict_type[slice_id];
 
     if ((header & 0x9F) == 2) {
-        i = (s->mb_num < 64) ? 5 : av_log2(s->mb_num - 1);
+        i = (s->mb_num < 64) ? 6 : (1 + av_log2(s->mb_num - 1));
         get_bits(&s->gb_slice, i);
+    } else if (get_bits1(&s->gb_slice)) {
+        avpriv_report_missing_feature(s->avctx, "Media key encryption");
+        return AVERROR_PATCHWELCOME;
     }
 
     s->slice_num      = get_bits(&s->gb_slice, 8);
@@ -1184,6 +1183,7 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
         GetBitContext gb;
         int frame_size_code;
         int unk0, unk1, unk2, unk3, unk4;
+        int w,h;
 
         size = AV_RB32(&extradata[4]);
         if (size > extradata_end - extradata - 8) {
@@ -1196,38 +1196,41 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
         frame_size_code = get_bits(&gb, 3);
         switch (frame_size_code) {
         case 0:
-            avctx->width  = 160;
-            avctx->height = 120;
+            w = 160;
+            h = 120;
             break;
         case 1:
-            avctx->width  = 128;
-            avctx->height =  96;
+            w = 128;
+            h =  96;
             break;
         case 2:
-            avctx->width  = 176;
-            avctx->height = 144;
+            w = 176;
+            h = 144;
             break;
         case 3:
-            avctx->width  = 352;
-            avctx->height = 288;
+            w = 352;
+            h = 288;
             break;
         case 4:
-            avctx->width  = 704;
-            avctx->height = 576;
+            w = 704;
+            h = 576;
             break;
         case 5:
-            avctx->width  = 240;
-            avctx->height = 180;
+            w = 240;
+            h = 180;
             break;
         case 6:
-            avctx->width  = 320;
-            avctx->height = 240;
+            w = 320;
+            h = 240;
             break;
         case 7:
-            avctx->width  = get_bits(&gb, 12);
-            avctx->height = get_bits(&gb, 12);
+            w = get_bits(&gb, 12);
+            h = get_bits(&gb, 12);
             break;
         }
+        ret = ff_set_dimensions(avctx, w, h);
+        if (ret < 0)
+            goto fail;
 
         s->halfpel_flag  = get_bits1(&gb);
         s->thirdpel_flag = get_bits1(&gb);