* ffmpeg update to 51.28.0

  * Workaround ffmpeg buggy codecs that don't release their DR1 frames.
  * Fix several segfaults and freezing problem with H264 streams that use a lot
    of reference frames (eg. 15)
  * Initial support to enable/disable ffmpeg codecs. Codecs may be disabled in
    groups by --disable-ffmpeg-uncommon-codecs/--disable-ffmpeg-popular-codecs
    Think of "uncommon" codecs what people would never want to play with their
    PDAs (they will save memory by removing them).
    Note: currently both uncommon/popular codecs are _build_ but disabled.
    that is, build system still need some improvements to really save memory.
warning: non-autoconf guru playing with the build system, likely breakage.

CVS patchset: 8499
CVS date: 2007/01/13 21:19:52

1 files changed, 28 insertions, 0 deletions

diff --git a/src/libffmpeg/libavcodec/dsputil.c b/src/libffmpeg/libavcodec/dsputil.c
index 51eddbc60..916d8658c 100644
--- a/src/libffmpeg/libavcodec/dsputil.c
+++ b/src/libffmpeg/libavcodec/dsputil.c
@@ -2549,6 +2549,11 @@ void ff_put_vc1_mspel_mc00_c(uint8_t *dst, uint8_t *src, int stride, int rnd) {
 }
 #endif /* CONFIG_VC1_DECODER||CONFIG_WMV3_DECODER */
 
+#if defined(CONFIG_H264_ENCODER)
+/* H264 specific */
+void ff_h264dsp_init(DSPContext* c, AVCodecContext *avctx);
+#endif /* CONFIG_H264_ENCODER */
+
 static void wmv2_mspel8_v_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int w){
     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
     int i;
@@ -3801,11 +3806,31 @@ void dsputil_static_init(void)
     for(i=0; i<64; i++) inv_zigzag_direct16[ff_zigzag_direct[i]]= i+1;
 }
 
+int ff_check_alignment(void){
+    static int did_fail=0;
+    DECLARE_ALIGNED_16(int, aligned);
+
+    if((int)&aligned & 15){
+        if(!did_fail){
+#if defined(HAVE_MMX) || defined(HAVE_ALTIVEC)
+            av_log(NULL, AV_LOG_ERROR,
+                "Compiler did not align stack variables. Libavcodec has been miscompiled\n"
+                "and may be very slow or crash. This is not a bug in libavcodec,\n"
+                "but in the compiler. Do not report crashes to FFmpeg developers.\n");
+#endif
+            did_fail=1;
+        }
+        return -1;
+    }
+    return 0;
+}
 
 void dsputil_init(DSPContext* c, AVCodecContext *avctx)
 {
     int i;
 
+    ff_check_alignment();
+
 #ifdef CONFIG_ENCODERS
     if(avctx->dct_algo==FF_DCT_FASTINT) {
         c->fdct = fdct_ifast;
@@ -4006,6 +4031,9 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
 #if defined(CONFIG_VC1_DECODER) || defined(CONFIG_WMV3_DECODER)
     ff_vc1dsp_init(c,avctx);
 #endif
+#if defined(CONFIG_H264_ENCODER)
+    ff_h264dsp_init(c,avctx);
+#endif
 
     c->put_mspel_pixels_tab[0]= put_mspel8_mc00_c;
     c->put_mspel_pixels_tab[1]= put_mspel8_mc10_c;