avcodec/dca: Unavpriv dca_sample_rates

Said table is 64 bytes long and exported so that it can be used both
in libavcodec and libavformat. This commit stops doing so and instead
duplicates it for shared builds, because the overhead of exporting the
symbol is bigger than 64 bytes. It consists of the length of the name of
the symbol (2x24 bytes), two entries in .dynsym (2x24 bytes), two
entries for symbol version (2x2 bytes), one hash value in the exporting
library (4 bytes) in addition to one entry in the importing library's
.got and .rela.dyn (8 + 24 bytes).
(The above numbers are for a Linux/GNU/Elf system; the numbers for other
platforms may be different.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

3 files changed, 27 insertions, 1 deletions

diff --git a/libavformat/Makefile b/libavformat/Makefile
index df95c34046..82e7fd3dc7 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -685,6 +685,7 @@ SHLIBOBJS-$(CONFIG_HLS_DEMUXER)          += ac3_channel_layout_tab.o
 SHLIBOBJS-$(CONFIG_MOV_DEMUXER)          += ac3_channel_layout_tab.o
 SHLIBOBJS-$(CONFIG_MXF_MUXER)            += golomb_tab.o
 SHLIBOBJS-$(CONFIG_RTP_MUXER)            += golomb_tab.o
+SHLIBOBJS-$(CONFIG_SPDIF_MUXER)          += dca_sample_rate_tab.o
 
 # libavdevice dependencies
 OBJS-$(CONFIG_IEC61883_INDEV)            += dv.o
diff --git a/libavformat/dca_sample_rate_tab.c b/libavformat/dca_sample_rate_tab.c
new file mode 100644
index 0000000000..ed2380b0cd
--- /dev/null
+++ b/libavformat/dca_sample_rate_tab.c
@@ -0,0 +1,25 @@
+/*
+ * DCA sample rates
+ * Copyright (C) 2004 Gildas Bazin
+ * Copyright (C) 2004 Benjamin Zores
+ * Copyright (C) 2006 Benjamin Larsson
+ * Copyright (C) 2007 Konstantin Shishkov
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavcodec/dca_sample_rate_tab.h"
diff --git a/libavformat/spdifenc.c b/libavformat/spdifenc.c
index e8f54bff4b..3be89328df 100644
--- a/libavformat/spdifenc.c
+++ b/libavformat/spdifenc.c
@@ -263,7 +263,7 @@ static int spdif_header_dts(AVFormatContext *s, AVPacket *pkt)
     case DCA_SYNCWORD_CORE_BE:
         blocks = (AV_RB16(pkt->data + 4) >> 2) & 0x7f;
         core_size = ((AV_RB24(pkt->data + 5) >> 4) & 0x3fff) + 1;
-        sample_rate = avpriv_dca_sample_rates[(pkt->data[8] >> 2) & 0x0f];
+        sample_rate = ff_dca_sample_rates[(pkt->data[8] >> 2) & 0x0f];
         break;
     case DCA_SYNCWORD_CORE_LE:
         blocks = (AV_RL16(pkt->data + 4) >> 2) & 0x7f;