Initial commit of all previous Chrome build scripts.

chromium/patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch

Index: chromium/patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch
diff --git a/chromium/patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch b/chromium/patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch
new file mode 100644
index 0000000000000000000000000000000000000000..5f9c82ecc8f3776d6d0e0b47323e33cfeedadc93
--- /dev/null
+++ b/chromium/patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch
@@ -0,0 +1,86 @@
+Index: patched-ffmpeg/libavcodec/vorbisdec.c
+===================================================================
+--- patched-ffmpeg/libavcodec/vorbisdec.c	(revision 112050)
++++ patched-ffmpeg/libavcodec/vorbisdec.c	(working copy)
+@@ -1234,20 +1234,20 @@
+             floor1_flag[i]               = 1;
+             if (val >= room) {
+                 if (highroom > lowroom) {
+-                    floor1_Y_final[i] = val - lowroom + predicted;
++                    floor1_Y_final[i] = av_clip_uint16(val - lowroom + predicted);
+                 } else {
+-                    floor1_Y_final[i] = predicted - val + highroom - 1;
++                    floor1_Y_final[i] = av_clip_uint16(predicted - val + highroom - 1);
+                 }
+             } else {
+                 if (val & 1) {
+-                    floor1_Y_final[i] = predicted - (val + 1) / 2;
++                    floor1_Y_final[i] = av_clip_uint16(predicted - (val + 1) / 2);
+                 } else {
+-                    floor1_Y_final[i] = predicted + val / 2;
++                    floor1_Y_final[i] = av_clip_uint16(predicted + val / 2);
+                 }
+             }
+         } else {
+             floor1_flag[i]    = 0;
+-            floor1_Y_final[i] = predicted;
++            floor1_Y_final[i] = av_clip_uint16(predicted);
+         }
+ 
+         av_dlog(NULL, " Decoded floor(%d) = %u / val %u\n",
+Index: patched-ffmpeg/libavcodec/vorbis.c
+===================================================================
+--- patched-ffmpeg/libavcodec/vorbis.c	(revision 112050)
++++ patched-ffmpeg/libavcodec/vorbis.c	(working copy)
+@@ -150,7 +150,7 @@
+     }
+ }
+ 
+-static inline void render_line_unrolled(intptr_t x, unsigned char y, int x1,
++static inline void render_line_unrolled(intptr_t x, int y, int x1,
+                                         intptr_t sy, int ady, int adx,
+                                         float *buf)
+ {
+@@ -162,14 +162,14 @@
+         if (err >= 0) {
+             err += ady - adx;
+             y   += sy;
+-            buf[x++] = ff_vorbis_floor1_inverse_db_table[y];
++            buf[x++] = ff_vorbis_floor1_inverse_db_table[av_clip_uint8(y)];
+         }
+-        buf[x] = ff_vorbis_floor1_inverse_db_table[y];
++        buf[x] = ff_vorbis_floor1_inverse_db_table[av_clip_uint8(y)];
+     }
+     if (x <= 0) {
+         if (err + ady >= 0)
+             y += sy;
+-        buf[x] = ff_vorbis_floor1_inverse_db_table[y];
++        buf[x] = ff_vorbis_floor1_inverse_db_table[av_clip_uint8(y)];
+     }
+ }
+ 
+@@ -179,13 +179,13 @@
+     int adx = x1 - x0;
+     int ady = FFABS(dy);
+     int sy  = dy < 0 ? -1 : 1;
+-    buf[x0] = ff_vorbis_floor1_inverse_db_table[y0];
++    buf[x0] = ff_vorbis_floor1_inverse_db_table[av_clip_uint8(y0)];
+     if (ady*2 <= adx) { // optimized common case
+         render_line_unrolled(x0, y0, x1, sy, ady, adx, buf);
+     } else {
+         int base = dy / adx;
+         int x    = x0;
+-        unsigned char y = y0;
++        int y    = y0;
+         int err  = -adx;
+         ady -= FFABS(base) * adx;
+         while (++x < x1) {
+@@ -195,7 +195,7 @@
+                 err -= adx;
+                 y   += sy;
+             }
+-            buf[x] = ff_vorbis_floor1_inverse_db_table[y];
++            buf[x] = ff_vorbis_floor1_inverse_db_table[av_clip_uint8(y)];
+         }
+     }
+ }