avcodec/atrac: Make generating tables thread-safe

[ffmpeg] / libavcodec / takdec.c

diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c
index 0439a3ac9b922e7e34852a2734e456efdbb08fa6..9fa1cb1f7fca68499f9f29078f19e8ac2b1dcf9a 100644 (file)
--- a/libavcodec/takdec.c
+++ b/libavcodec/takdec.c
@@ -176,8 +176,8 @@ static void set_sample_rate_params(AVCodecContext *avctx)
     } else {
         shift = 0;
     }
-    s->uval           = FFALIGN(avctx->sample_rate + 511 >> 9, 4) << shift;
-    s->subframe_scale = FFALIGN(avctx->sample_rate + 511 >> 9, 4) << 1;
+    s->uval           = FFALIGN(avctx->sample_rate + 511LL >> 9, 4) << shift;
+    s->subframe_scale = FFALIGN(avctx->sample_rate + 511LL >> 9, 4) << 1;
 }
 
 static av_cold int tak_decode_init(AVCodecContext *avctx)
@@ -653,7 +653,7 @@ static int decorrelate(TAKDecContext *s, int c1, int c2, int length)
                          s->residues[i    ] * s->filter[0];
                 }
 
-                v = av_clip_intp2(v >> 10, 13) * (1 << dshift) - *p1;
+                v = av_clip_intp2(v >> 10, 13) * (1U << dshift) - *p1;
                 *p1++ = v;
             }
 
@@ -915,13 +915,6 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
 }
 
 #if HAVE_THREADS
-static int init_thread_copy(AVCodecContext *avctx)
-{
-    TAKDecContext *s = avctx->priv_data;
-    s->avctx = avctx;
-    return 0;
-}
-
 static int update_thread_context(AVCodecContext *dst,
                                  const AVCodecContext *src)
 {
@@ -953,7 +946,6 @@ AVCodec ff_tak_decoder = {
     .init             = tak_decode_init,
     .close            = tak_decode_close,
     .decode           = tak_decode_frame,
-    .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
     .sample_fmts      = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_U8P,