On2 VP7 decoder

Further performance improvements and security fixes by
Vittorio Giovara, Luca Barbato and Diego Biurrun.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 21 insertions, 0 deletions

diff --git a/libavcodec/vp8.h b/libavcodec/vp8.h
index 1eb0512626..99389051eb 100644
--- a/libavcodec/vp8.h
+++ b/libavcodec/vp8.h
@@ -237,6 +237,7 @@ typedef struct VP8Context {
         uint8_t pred8x8c[3];
         uint8_t token[4][16][3][NUM_DCT_TOKENS - 1];
         uint8_t mvc[2][19];
+        uint8_t scan[16];
     } prob[2];
 
     VP8Macroblock *macroblocks_base;
@@ -270,6 +271,26 @@ typedef struct VP8Context {
      * 1 -> Macroblocks for entire frame alloced (sliced thread).
      */
     int mb_layout;
+
+    /**
+     * Fade bit present in bitstream (VP7)
+     */
+    int fade_present;
+
+    /**
+     * Interframe DC prediction (VP7)
+     * [0] VP56_FRAME_PREVIOUS
+     * [1] VP56_FRAME_GOLDEN
+     */
+    uint16_t inter_dc_pred[2][2];
+
+    /**
+     * Macroblock features (VP7)
+     */
+    uint8_t feature_enabled[4];
+    uint8_t feature_present_prob[4];
+    uint8_t feature_index_prob[4][3];
+    uint8_t feature_value[4][4];
 } VP8Context;
 
 int ff_vp8_decode_init(AVCodecContext *avctx);