dca: include libavutil/mathematics.h for possibly missing M_SQRT1_2

[ffmpeg] / libavcodec / vble.c

diff --git a/libavcodec/vble.c b/libavcodec/vble.c
index 09a94993619fd8b7b3f35306c0a23c5f80a587ce..5e8543bec0701bdf513e7fc94fca26c0093ab2d0 100644 (file)
--- a/libavcodec/vble.c
+++ b/libavcodec/vble.c
@@ -24,16 +24,17 @@
  * VBLE Decoder
  */
 
-#define ALT_BITSTREAM_READER_LE
+#define BITSTREAM_READER_LE
 
 #include "avcodec.h"
+#include "dsputil.h"
 #include "get_bits.h"
 
 typedef struct {
     AVCodecContext *avctx;
+    DSPContext dsp;
 
     int            size;
-    int            flags;
     uint8_t        *val; /* First holds the lengths of vlc symbols and then their values */
 } VBLEContext;
 
@@ -87,27 +88,22 @@ static void vble_restore_plane(VBLEContext *ctx, int plane, int offset,
     AVFrame *pic = ctx->avctx->coded_frame;
     uint8_t *dst = pic->data[plane];
     uint8_t *val = ctx->val + offset;
-    uint8_t a, b, c;
     int stride = pic->linesize[plane];
-    int i, j;
+    int i, j, left, left_top;
 
     for (i = 0; i < height; i++) {
-        for (j = 0; j < width; j++) {
-            dst[j] = (val[j] >> 1) ^ -(val[j] & 1);
-
-            /* Top line and left column are not predicted */
-            if (!j)
-                continue;
-
-            if (!i) {
-                dst[j] += dst[j - 1];
-                continue;
-            }
-
-            a = dst[j - 1];
-            b = dst[j - stride];
-            c = a + b - dst[j - 1 - stride];
-            dst[j] += mid_pred(a, b, c);
+        for (j = 0; j < width; j++)
+            val[j] = (val[j] >> 1) ^ -(val[j] & 1);
+
+        if (i) {
+            left = 0;
+            left_top = dst[-stride];
+            ctx->dsp.add_hfyu_median_prediction(dst, dst-stride, val,
+                                                width, &left, &left_top);
+        } else {
+            dst[0] = val[0];
+            for (j = 1; j < width; j++)
+                dst[j] = val[j] + dst[j - 1];
         }
         dst += stride;
         val += width;
@@ -139,7 +135,7 @@ static int vble_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
 
     /* Set flags */
     pic->key_frame = 1;
-    pic->pict_type = FF_I_TYPE;
+    pic->pict_type = AV_PICTURE_TYPE_I;
 
     /* Version should always be 1 */
     version = AV_RL32(src);
@@ -161,7 +157,7 @@ static int vble_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     vble_restore_plane(ctx, 0, offset, avctx->width, avctx->height);
 
     /* Chroma */
-    if (!(ctx->flags & CODEC_FLAG_GRAY)) {
+    if (!(ctx->avctx->flags & CODEC_FLAG_GRAY)) {
         offset += avctx->width * avctx->height;
         vble_restore_plane(ctx, 1, offset, width_uv, height_uv);
 
@@ -195,7 +191,7 @@ static av_cold int vble_decode_init(AVCodecContext *avctx)
 
     /* Stash for later use */
     ctx->avctx = avctx;
-    ctx->flags = avctx->flags;
+    ff_dsputil_init(&ctx->dsp, avctx);
 
     avctx->pix_fmt = PIX_FMT_YUV420P;
     avctx->bits_per_raw_sample = 8;