cabac: Mark ff_h264_mps_state array as static, it is only used within cabac.c.

[ffmpeg] / libavcodec / cavsdec.c

diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c
index d5a21bf2de6cae2801d536a6b7fbe344b6f1a9f5..2f4b6e3b14d6e52a28939fe6834c3a77549af0d3 100644 (file)
--- a/libavcodec/cavsdec.c
+++ b/libavcodec/cavsdec.c
@@ -130,12 +130,14 @@ static int decode_residual_block(AVSContext *h, GetBitContext *gb,
                 r++;
             mask = -(level_code & 1);
             level = (level^mask) - mask;
-        } else {
+        } else if (level_code >= 0) {
             level = r->rltab[level_code][0];
             if(!level) //end of block signal
                 break;
             run   = r->rltab[level_code][1];
             r += r->rltab[level_code][2];
+        } else {
+            break;
         }
         level_buf[i] = level;
         run_buf[i] = run;
@@ -189,7 +191,8 @@ static inline int decode_residual_inter(AVSContext *h) {
 
 static int decode_mb_i(AVSContext *h, int cbp_code) {
     GetBitContext *gb = &h->s.gb;
-    int block, pred_mode_uv;
+    unsigned pred_mode_uv;
+    int block;
     uint8_t top[18];
     uint8_t *left = NULL;
     uint8_t *d;
@@ -445,6 +448,8 @@ static inline int check_for_slice(AVSContext *h) {
     if((show_bits_long(gb,24+align) & 0xFFFFFF) == 0x000001) {
         skip_bits_long(gb,24+align);
         h->stc = get_bits(gb,8);
+        if (h->stc >= h->mb_height)
+            return 0;
         decode_slice_header(h,gb);
         return 1;
     }
@@ -485,7 +490,7 @@ static int decode_pic(AVSContext *h) {
             skip_bits(&s->gb,24);//time_code
         /* old sample clips were all progressive and no low_delay,
            bump stream revision if detected otherwise */
-        if((s->low_delay) || !(show_bits(&s->gb,9) & 1))
+        if (s->low_delay || !(show_bits(&s->gb,9) & 1))
             h->stream_revision = 1;
         /* similarly test top_field_first and repeat_first_field */
         else if(show_bits(&s->gb,11) & 3)
@@ -619,8 +624,8 @@ static int decode_seq_header(AVSContext *h) {
     s->low_delay =       get_bits1(&s->gb);
     h->mb_width  = (s->width  + 15) >> 4;
     h->mb_height = (s->height + 15) >> 4;
-    h->s.avctx->time_base.den = ff_frame_rate_tab[frame_rate_code].num;
-    h->s.avctx->time_base.num = ff_frame_rate_tab[frame_rate_code].den;
+    h->s.avctx->time_base.den = avpriv_frame_rate_tab[frame_rate_code].num;
+    h->s.avctx->time_base.num = avpriv_frame_rate_tab[frame_rate_code].den;
     h->s.avctx->width  = s->width;
     h->s.avctx->height = s->height;
     if(!h->top_qp)
@@ -658,8 +663,8 @@ static int cavs_decode_frame(AVCodecContext * avctx,void *data, int *data_size,
     buf_ptr = buf;
     buf_end = buf + buf_size;
     for(;;) {
-        buf_ptr = ff_find_start_code(buf_ptr,buf_end, &stc);
-        if(stc & 0xFFFFFE00)
+        buf_ptr = avpriv_mpv_find_start_code(buf_ptr,buf_end, &stc);
+        if((stc & 0xFFFFFE00) || buf_ptr == buf_end)
             return FFMAX(0, buf_ptr - buf - s->parse_context.last_index);
         input_size = (buf_end - buf_ptr)*8;
         switch(stc) {