Revert "movtextdec: Use default style information from movtext header"

The commit broke  sub-movtext and sub-subripenc
fate output differs between mips ad x86 so updating fate ref is not
possible

This reverts commit d670848d.

libavcodec/movtextdec.c

@@ -37,27 +37,6 @@
 #define HLIT_BOX   (1<<1)
 #define HCLR_BOX   (1<<2)
 
-#define BOTTOM_LEFT     1
-#define BOTTOM_CENTER   2
-#define BOTTOM_RIGHT    3
-#define MIDDLE_LEFT     4
-#define MIDDLE_CENTER   5
-#define MIDDLE_RIGHT    6
-#define TOP_LEFT        7
-#define TOP_CENTER      8
-#define TOP_RIGHT       9
-
-typedef struct {
-    char *font;
-    int fontsize;
-    int color;
-    int back_color;
-    int bold;
-    int italic;
-    int underline;
-    int alignment;
-} MovTextDefault;
-
 typedef struct {
     uint16_t fontID;
     char *font;
@@ -87,7 +66,6 @@ typedef struct {
     HilightcolorBox c;
     FontRecord **ftab;
     FontRecord *ftab_temp;
-    MovTextDefault d;
     uint8_t box_flags;
     uint16_t style_entries, ftab_entries;
     uint64_t tracksize;
@@ -128,9 +106,6 @@ static int mov_text_tx3g(AVCodecContext *avctx, MovTextContext *m)
 {
     char *tx3g_ptr = avctx->extradata;
     int i, box_size, font_length;
-    int8_t v_align, h_align;
-    int style_fontID;
-    StyleBox s_default;
 
     m->count_f = 0;
     m->ftab_entries = 0;
@@ -141,52 +116,13 @@ static int mov_text_tx3g(AVCodecContext *avctx, MovTextContext *m)
     // Display Flags
     tx3g_ptr += 4;
     // Alignment
-    h_align = *tx3g_ptr++;
-    v_align = *tx3g_ptr++;
-    if (h_align == 0) {
-        if (v_align == 0)
-            m->d.alignment = TOP_LEFT;
-        if (v_align == 1)
-            m->d.alignment = MIDDLE_LEFT;
-        if (v_align == -1)
-            m->d.alignment = BOTTOM_LEFT;
-    }
-    if (h_align == 1) {
-        if (v_align == 0)
-            m->d.alignment = TOP_CENTER;
-        if (v_align == 1)
-            m->d.alignment = MIDDLE_CENTER;
-        if (v_align == -1)
-            m->d.alignment = BOTTOM_CENTER;
-    }
-    if (h_align == -1) {
-        if (v_align == 0)
-            m->d.alignment = TOP_RIGHT;
-        if (v_align == 1)
-            m->d.alignment = MIDDLE_RIGHT;
-        if (v_align == -1)
-            m->d.alignment = BOTTOM_RIGHT;
-    }
+    tx3g_ptr += 2;
     // Background Color
-    memcpy(&m->d.back_color, tx3g_ptr, 3);
     tx3g_ptr += 4;
     // BoxRecord
     tx3g_ptr += 8;
     // StyleRecord
-    tx3g_ptr += 4;
-    // fontID
-    style_fontID = AV_RB16(tx3g_ptr);
-    tx3g_ptr += 2;
-    // face-style-flags
-    s_default.style_flag = *tx3g_ptr++;
-    m->d.bold = s_default.style_flag & STYLE_FLAG_BOLD;
-    m->d.italic = s_default.style_flag & STYLE_FLAG_ITALIC;
-    m->d.underline = s_default.style_flag & STYLE_FLAG_UNDERLINE;
-    // fontsize
-    m->d.fontsize = *tx3g_ptr++;
-    // Primary color
-    memcpy(&m->d.color, tx3g_ptr, 3);
-    tx3g_ptr += 4;
+    tx3g_ptr += 12;
     // FontRecord
     // FontRecord Size
     tx3g_ptr += 4;
@@ -233,10 +169,6 @@ static int mov_text_tx3g(AVCodecContext *avctx, MovTextContext *m)
         }
         tx3g_ptr = tx3g_ptr + font_length;
     }
-    for (i = 0; i < m->ftab_entries; i++) {
-        if (style_fontID == m->ftab[i]->fontID)
-            m->d.font = m->ftab[i]->font;
-    }
     return 0;
 }
 
@@ -380,15 +312,9 @@ static int mov_text_init(AVCodecContext *avctx) {
      * it's very common to find files where the default style is broken
      * and respecting it results in a worse experience than ignoring it.
      */
-    int ret;
     MovTextContext *m = avctx->priv_data;
-    ret = mov_text_tx3g(avctx, m);
-    if (ret == 0) {
-        return ff_ass_subtitle_header(avctx, m->d.font, m->d.fontsize, m->d.color,
-                                m->d.back_color, m->d.bold, m->d.italic,
-                                m->d.underline, m->d.alignment);
-    } else
-        return ff_ass_subtitle_header_default(avctx);
+    mov_text_tx3g(avctx, m);
+    return ff_ass_subtitle_header_default(avctx);
 }
 
 static int mov_text_decode_frame(AVCodecContext *avctx,