Initial commit of all previous Chrome build scripts.

chromium/patches/to_upstream/47_vp3_fix_infloop_and_memleak.patch

+diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
+index 17c097e..ce14e63 100644
+--- a/libavcodec/vp3.c
++++ b/libavcodec/vp3.c
+@@ -45,6 +45,7 @@
+ #define FRAGMENT_PIXELS 8
+ 
+ static av_cold int vp3_decode_end(AVCodecContext *avctx);
++static void vp3_decode_flush(AVCodecContext *avctx);
+ 
+ //FIXME split things out into their own arrays
+ typedef struct Vp3Fragment {
+@@ -942,6 +943,10 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
+                 for (i = coeff_index+1; i <= coeff_index+zero_run; i++)
+                     s->num_coded_frags[plane][i]--;
+                 coeff_i++;
++            } else {
++                av_log(s->avctx, AV_LOG_ERROR,
++                       "Invalid token %d\n", token);
++                return -1;
+             }
+     }
+ 
+@@ -991,6 +996,8 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
+     /* unpack the Y plane DC coefficients */
+     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_y_table], 0,
+         0, residual_eob_run);
++    if (residual_eob_run < 0)
++        return residual_eob_run;
+ 
+     /* reverse prediction of the Y-plane DC coefficients */
+     reverse_dc_prediction(s, 0, s->fragment_width[0], s->fragment_height[0]);
+@@ -998,8 +1005,12 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
+     /* unpack the C plane DC coefficients */
+     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
+         1, residual_eob_run);
++    if (residual_eob_run < 0)
++        return residual_eob_run;
+     residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
+         2, residual_eob_run);
++    if (residual_eob_run < 0)
++        return residual_eob_run;
+ 
+     /* reverse prediction of the C-plane DC coefficients */
+     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
+@@ -1036,11 +1047,17 @@ static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
+     for (i = 1; i <= 63; i++) {
+             residual_eob_run = unpack_vlcs(s, gb, y_tables[i], i,
+                 0, residual_eob_run);
++            if (residual_eob_run < 0)
++                return residual_eob_run;
+ 
+             residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
+                 1, residual_eob_run);
++            if (residual_eob_run < 0)
++                return residual_eob_run;
+             residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
+                 2, residual_eob_run);
++            if (residual_eob_run < 0)
++                return residual_eob_run;
+     }
+ 
+     return 0;
+@@ -1990,9 +2007,6 @@ static av_cold int vp3_decode_end(AVCodecContext *avctx)
+     Vp3DecodeContext *s = avctx->priv_data;
+     int i;
+ 
+-    if (avctx->is_copy && !s->current_frame.data[0])
+-        return 0;
+-
+     av_free(s->superblock_coding);
+     av_free(s->all_fragments);
+     av_free(s->coded_fragment_list[0]);
+@@ -2019,12 +2033,7 @@ static av_cold int vp3_decode_end(AVCodecContext *avctx)
+     free_vlc(&s->motion_vector_vlc);
+ 
+     /* release all frames */
+-    if (s->golden_frame.data[0])
+-        ff_thread_release_buffer(avctx, &s->golden_frame);
+-    if (s->last_frame.data[0] && s->last_frame.type != FF_BUFFER_TYPE_COPY)
+-        ff_thread_release_buffer(avctx, &s->last_frame);
+-    /* no need to release the current_frame since it will always be pointing
+-     * to the same frame as either the golden or last frame */
++    vp3_decode_flush(avctx);
+ 
+     return 0;
+ }
+@@ -2344,6 +2353,23 @@ static void vp3_decode_flush(AVCodecContext *avctx)
+         ff_thread_release_buffer(avctx, &s->current_frame);
+ }
+ 
++static int vp3_init_thread_copy(AVCodecContext *avctx)
++{
++    Vp3DecodeContext *s = avctx->priv_data;
++
++    s->superblock_coding      = NULL;
++    s->all_fragments          = NULL;
++    s->coded_fragment_list[0] = NULL;
++    s->dct_tokens_base        = NULL;
++    s->superblock_fragments   = NULL;
++    s->macroblock_coding      = NULL;
++    s->motion_val[0]          = NULL;
++    s->motion_val[1]          = NULL;
++    s->edge_emu_buffer        = NULL;
++
++    return 0;
++}
++
+ AVCodec ff_theora_decoder = {
+     .name           = "theora",
+     .type           = AVMEDIA_TYPE_VIDEO,
+@@ -2355,6 +2381,7 @@ AVCodec ff_theora_decoder = {
+     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_FRAME_THREADS,
+     .flush = vp3_decode_flush,
+     .long_name = NULL_IF_CONFIG_SMALL("Theora"),
++    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy),
+     .update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context)
+ };
+ #endif
+@@ -2370,5 +2397,6 @@ AVCodec ff_vp3_decoder = {
+     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_FRAME_THREADS,
+     .flush = vp3_decode_flush,
+     .long_name = NULL_IF_CONFIG_SMALL("On2 VP3"),
++    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy),
+     .update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context)
+ };
+-- 
+1.7.2.1
+