Add support for hard-coding the 256kB large dv_vlc_map table.

Originally committed as revision 22622 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -626,6 +626,12 @@ $(SUBDIR)mpegaudio_tablegen$(HOSTEXESUF): HOSTCFLAGS += -DFRAC_BITS=15
 $(SUBDIR)mpegaudio_tablegen.ho: CPPFLAGS += -DFRAC_BITS=15
 endif
 
+ifdef CONFIG_SMALL
+$(SUBDIR)%_tablegen$(HOSTEXESUF): HOSTCFLAGS += -DCONFIG_SMALL=1
+else
+$(SUBDIR)%_tablegen$(HOSTEXESUF): HOSTCFLAGS += -DCONFIG_SMALL=0
+endif
+
 $(SUBDIR)%_tablegen$(HOSTEXESUF): $(SUBDIR)%_tablegen.c $(SUBDIR)tableprint.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^ $(HOSTLIBS)
 
@@ -634,6 +640,7 @@ $(SUBDIR)%_tables.h: $(SUBDIR)%_tablegen$(HOSTEXESUF)
 
 ifdef CONFIG_HARDCODED_TABLES
 $(SUBDIR)aac.o: $(SUBDIR)cbrt_tables.h
+$(SUBDIR)dv.o: $(SUBDIR)dv_tables.h
 $(SUBDIR)mdct.o: $(SUBDIR)mdct_tables.h
 $(SUBDIR)mpegaudiodec.o: $(SUBDIR)mpegaudio_tables.h
 $(SUBDIR)motionpixels.o: $(SUBDIR)motionpixels_tables.h

libavcodec/dv.c

@@ -44,7 +44,7 @@
 #include "put_bits.h"
 #include "simple_idct.h"
 #include "dvdata.h"
-#include "dv_vlc_data.h"
+#include "dv_tablegen.h"
 
 //#undef NDEBUG
 //#include <assert.h>
@@ -65,21 +65,8 @@ typedef struct DVVideoContext {
 
 #define TEX_VLC_BITS 9
 
-#if CONFIG_SMALL
-#define DV_VLC_MAP_RUN_SIZE 15
-#define DV_VLC_MAP_LEV_SIZE 23
-#else
-#define DV_VLC_MAP_RUN_SIZE  64
-#define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
-#endif
-
 /* XXX: also include quantization */
 static RL_VLC_ELEM dv_rl_vlc[1184];
-/* VLC encoding lookup table */
-static struct dv_vlc_pair {
-   uint32_t vlc;
-   uint8_t  size;
-} dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
 
 static inline int dv_work_pool_size(const DVprofile *d)
 {
@@ -326,47 +313,7 @@ static av_cold int dvvideo_init(AVCodecContext *avctx)
         }
         free_vlc(&dv_vlc);
 
-        for (i = 0; i < NB_DV_VLC - 1; i++) {
-           if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
-               continue;
-#if CONFIG_SMALL
-           if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
-               continue;
-#endif
-
-           if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
-               continue;
-
-           dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc  =
-               dv_vlc_bits[i] << (!!dv_vlc_level[i]);
-           dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size =
-               dv_vlc_len[i] + (!!dv_vlc_level[i]);
-        }
-        for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
-#if CONFIG_SMALL
-           for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
-              if (dv_vlc_map[i][j].size == 0) {
-                  dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
-                            (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
-                  dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
-                                          dv_vlc_map[0][j].size;
-              }
-           }
-#else
-           for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) {
-              if (dv_vlc_map[i][j].size == 0) {
-                  dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
-                            (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
-                  dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
-                                          dv_vlc_map[0][j].size;
-              }
-              dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
-                                            dv_vlc_map[i][j].vlc | 1;
-              dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
-                                            dv_vlc_map[i][j].size;
-           }
-#endif
-        }
+        dv_vlc_map_tableinit();
     }
 
     /* Generic DSP setup */

libavcodec/dv_tablegen.c

@@ -0,0 +1,50 @@
+/*
+ * Generate a header file for hardcoded DV tables
+ *
+ * Copyright (c) 2010 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 <stdlib.h>
+#define CONFIG_HARDCODED_TABLES 0
+#ifndef CONFIG_SMALL
+#error CONFIG_SMALL must be defined to generate tables
+#endif
+#include "dv_tablegen.h"
+#include "tableprint.h"
+#include <inttypes.h>
+
+WRITE_1D_FUNC_ARGV(vlc_pair, struct dv_vlc_pair, 7,
+                   "{0x%"PRIx32", %"PRId8"}", data[i].vlc, data[i].size)
+WRITE_2D_FUNC(vlc_pair, struct dv_vlc_pair)
+
+void tableinit(void)
+{
+    dv_vlc_map_tableinit();
+}
+
+const struct tabledef tables[] = {
+    {
+        "static const struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE]",
+        write_vlc_pair_2d_array,
+        dv_vlc_map,
+        DV_VLC_MAP_RUN_SIZE,
+        DV_VLC_MAP_LEV_SIZE
+    },
+    { NULL }
+};

libavcodec/dv_tablegen.h

@@ -0,0 +1,96 @@
+/*
+ * Header file for hardcoded DV tables
+ *
+ * Copyright (c) 2010 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
+ */
+
+#ifndef DV_TABLEGEN_H
+#define DV_TABLEGEN_H
+
+#include <stdint.h>
+#include "dv_vlc_data.h"
+
+#if CONFIG_SMALL
+#define DV_VLC_MAP_RUN_SIZE 15
+#define DV_VLC_MAP_LEV_SIZE 23
+#else
+#define DV_VLC_MAP_RUN_SIZE  64
+#define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
+#endif
+
+/* VLC encoding lookup table */
+struct dv_vlc_pair {
+   uint32_t vlc;
+   uint32_t size;
+};
+
+#if CONFIG_HARDCODED_TABLES
+#define dv_vlc_map_tableinit()
+#include "libavcodec/dv_tables.h"
+#else
+static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
+
+static void dv_vlc_map_tableinit(void)
+{
+    int i, j;
+    for (i = 0; i < NB_DV_VLC - 1; i++) {
+       if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
+           continue;
+#if CONFIG_SMALL
+       if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
+           continue;
+#endif
+
+       if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
+           continue;
+
+       dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc  =
+           dv_vlc_bits[i] << (!!dv_vlc_level[i]);
+       dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size =
+           dv_vlc_len[i] + (!!dv_vlc_level[i]);
+    }
+    for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
+#if CONFIG_SMALL
+       for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
+          if (dv_vlc_map[i][j].size == 0) {
+              dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
+                        (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
+              dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
+                                      dv_vlc_map[0][j].size;
+          }
+       }
+#else
+       for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) {
+          if (dv_vlc_map[i][j].size == 0) {
+              dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
+                        (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
+              dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
+                                      dv_vlc_map[0][j].size;
+          }
+          dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
+                                        dv_vlc_map[i][j].vlc | 1;
+          dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
+                                        dv_vlc_map[i][j].size;
+       }
+#endif
+    }
+}
+#endif /* CONFIG_HARDCODED_TABLES */
+
+#endif /* DV_TABLEGEN_H */