Add support for hardcoding the mpegaudiodec tables.

Reduces .bss size by about 194 kB.

Originally committed as revision 20400 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 72 insertions, 0 deletions

diff --git a/libavcodec/tableprint.c b/libavcodec/tableprint.c
new file mode 100644
index 0000000000..f0d0403a6b
--- /dev/null
+++ b/libavcodec/tableprint.c
@@ -0,0 +1,72 @@
+/*
+ * Generate a file for hardcoded tables
+ *
+ * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
+ *
+ * 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 <stdio.h>
+#include <inttypes.h>
+#include "tableprint.h"
+
+#define WRITE_1D_FUNC(name, type, fmtstr, linebrk)\
+void write_##name##_array(const void *arg, int len, int dummy)\
+{\
+    const type *data = arg;\
+    int i;\
+    printf("   ");\
+    for (i = 0; i < len - 1; i++) {\
+       printf(" "fmtstr",", data[i]);\
+       if ((i & linebrk) == linebrk) printf("\n   ");\
+    }\
+    printf(" "fmtstr"\n", data[i]);\
+}
+
+WRITE_1D_FUNC(int8,   int8_t,   "%3"PRIi8, 15)
+WRITE_1D_FUNC(uint32, uint32_t, "0x%08x",   7)
+
+#define WRITE_2D_FUNC(name, type)\
+void write_##name##_2d_array(const void *arg, int len, int len2)\
+{\
+    const type *data = arg;\
+    int i;\
+    printf("    {");\
+    for (i = 0; i < len; i++) {\
+        write_##name##_array(data + i * len2, len2, 0);\
+        printf(i == len - 1 ? "    }\n" : "    }, {\n");\
+    }\
+}
+
+WRITE_2D_FUNC(uint32, uint32_t)
+
+int main(int argc, char *argv[])
+{
+    int i;
+
+    printf("/* This file was generated by libavcodec/tableprint */\n");
+    printf("#include <stdint.h>\n");
+    tableinit();
+
+    for (i = 0; tables[i].declaration; i++) {
+        printf(tables[i].declaration);
+        printf(" = {\n");
+        tables[i].printfunc(tables[i].data, tables[i].size, tables[i].size2);
+        printf("};\n");
+    }
+    return 0;
+}