intrax8: Carry over the loopfilter value in ff_intrax8_decode_picture

Helps in decoupling this code from mpegvideo.

libavcodec/intrax8.c

@@ -712,7 +712,7 @@ block_placed:
     if (!chroma)
         x8_update_predictions(w, w->orient, n);
 
-    if (s->loop_filter) {
+    if (w->loopfilter) {
         uint8_t *ptr = w->dest[chroma];
         int linesize = s->current_picture.f->linesize[!!chroma];
 
@@ -776,7 +776,7 @@ av_cold void ff_intrax8_common_end(IntraX8Context *w)
 }
 
 int ff_intrax8_decode_picture(IntraX8Context *const w, int dquant,
-                              int quant_offset)
+                              int quant_offset, int loopfilter)
 {
     MpegEncContext *const s = w->s;
     int mb_xy;
@@ -786,6 +786,7 @@ int ff_intrax8_decode_picture(IntraX8Context *const w, int dquant,
     w->dquant = dquant;
     w->quant  = dquant >> 1;
     w->qsum   = quant_offset;
+    w->loopfilter = loopfilter;
 
     w->divide_quant_dc_luma = ((1 << 16) + (w->quant >> 1)) / w->quant;
     if (w->quant < 5) {

libavcodec/intrax8.h

@@ -42,6 +42,7 @@ typedef struct IntraX8Context {
     int quant;
     int dquant;
     int qsum;
+    int loopfilter;
 
     // calculated per frame
     int quant_dc_chroma;
@@ -78,14 +79,16 @@ void ff_intrax8_common_end(IntraX8Context *w);
 
 /**
  * Decode single IntraX8 frame.
- * The parent codec must fill s->loopfilter and s->gb (bitstream).
+ * The parent codec must fill s->gb (bitstream).
  * The parent codec must call ff_mpv_frame_start() before calling this function.
  * The parent codec must call ff_mpv_frame_end() after calling this function.
  * This function does not use ff_mpv_decode_mb().
  * @param w pointer to IntraX8Context
  * @param dquant doubled quantizer, it would be odd in case of VC-1 halfpq==1.
  * @param quant_offset offset away from zero
+ * @param loopfilter enable filter after decoding a block
  */
-int ff_intrax8_decode_picture(IntraX8Context *w, int quant, int halfpq);
+int ff_intrax8_decode_picture(IntraX8Context *w, int quant, int halfpq,
+                              int loopfilter);
 
 #endif /* AVCODEC_INTRAX8_H */

libavcodec/vc1_block.c

@@ -3022,7 +3022,8 @@ void ff_vc1_decode_blocks(VC1Context *v)
 
     v->s.esc3_level_length = 0;
     if (v->x8_type) {
-        ff_intrax8_decode_picture(&v->x8, 2*v->pq + v->halfpq, v->pq * !v->pquantizer);
+        ff_intrax8_decode_picture(&v->x8, 2 * v->pq + v->halfpq,
+                                  v->pq * !v->pquantizer, v->s.loop_filter);
 
         ff_er_add_slice(&v->s.er, 0, 0,
                         (v->s.mb_x >> 1) - 1, (v->s.mb_y >> 1) - 1,

libavcodec/wmv2dec.c

@@ -228,7 +228,8 @@ int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
     s->picture_number++; // FIXME ?
 
     if (w->j_type) {
-        ff_intrax8_decode_picture(&w->x8, 2 * s->qscale, (s->qscale - 1) | 1);
+        ff_intrax8_decode_picture(&w->x8, 2 * s->qscale, (s->qscale - 1) | 1,
+                                  s->loop_filter);
 
         ff_er_add_slice(&w->s.er, 0, 0,
                         (w->s.mb_x >> 1) - 1, (w->s.mb_y >> 1) - 1,