This structures are not depended on the bitreader.
---
libavcodec/get_bits.h | 42 +---------------------------------
libavcodec/vlc.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+), 41 deletions(-)
create mode 100644 libavcodec/vlc.h
diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h
index 29e7205..9d6a5e8 100644
--- a/libavcodec/get_bits.h
+++ b/libavcodec/get_bits.h
@@ -32,6 +32,7 @@
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "mathops.h"
+#include "vlc.h"
/*
* Safe bitstream reading:
@@ -59,20 +60,6 @@ typedef struct GetBitContext {
#endif
} GetBitContext;
-#define VLC_TYPE int16_t
-
-typedef struct VLC {
- int bits;
- VLC_TYPE (*table)[2]; ///< code, bits
- int table_size, table_allocated;
-} VLC;
-
-typedef struct RL_VLC_ELEM {
- int16_t level;
- int8_t len;
- uint8_t run;
-} RL_VLC_ELEM;
-
/* Bitstream reader API docs:
* name
* arbitrary name which is used as prefix for the internal variables
@@ -430,33 +417,6 @@ static inline const uint8_t *align_get_bits(GetBitContext
*s)
return s->buffer + (s->index >> 3);
}
-#define init_vlc(vlc, nb_bits, nb_codes, \
- bits, bits_wrap, bits_size, \
- codes, codes_wrap, codes_size, \
- flags) \
- ff_init_vlc_sparse(vlc, nb_bits, nb_codes, \
- bits, bits_wrap, bits_size, \
- codes, codes_wrap, codes_size, \
- NULL, 0, 0, flags)
-
-int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
- const void *bits, int bits_wrap, int bits_size,
- const void *codes, int codes_wrap, int codes_size,
- const void *symbols, int symbols_wrap, int symbols_size,
- int flags);
-void ff_free_vlc(VLC *vlc);
-
-#define INIT_VLC_LE 2
-#define INIT_VLC_USE_NEW_STATIC 4
-
-#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \
- do { \
- static VLC_TYPE table[static_size][2]; \
- (vlc)->table = table; \
- (vlc)->table_allocated = static_size; \
- init_vlc(vlc, bits, a, b, c, d, e, f, g, INIT_VLC_USE_NEW_STATIC); \
- } while (0)
-
/**
* If the vlc code is invalid and max_depth=1, then no bits will be removed.
* If the vlc code is invalid and max_depth>1, then the number of bits removed
diff --git a/libavcodec/vlc.h b/libavcodec/vlc.h
new file mode 100644
index 0000000..6a2b3a2
--- /dev/null
+++ b/libavcodec/vlc.h
@@ -0,0 +1,62 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef AVCODEC_VLC_H
+#define AVCODEC_VLC_H
+
+#define VLC_TYPE int16_t
+
+typedef struct VLC {
+ int bits;
+ VLC_TYPE (*table)[2]; ///< code, bits
+ int table_size, table_allocated;
+} VLC;
+
+typedef struct RL_VLC_ELEM {
+ int16_t level;
+ int8_t len;
+ uint8_t run;
+} RL_VLC_ELEM;
+
+#define init_vlc(vlc, nb_bits, nb_codes, \
+ bits, bits_wrap, bits_size, \
+ codes, codes_wrap, codes_size, \
+ flags) \
+ ff_init_vlc_sparse(vlc, nb_bits, nb_codes, \
+ bits, bits_wrap, bits_size, \
+ codes, codes_wrap, codes_size, \
+ NULL, 0, 0, flags)
+
+int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
+ const void *bits, int bits_wrap, int bits_size,
+ const void *codes, int codes_wrap, int codes_size,
+ const void *symbols, int symbols_wrap, int symbols_size,
+ int flags);
+void ff_free_vlc(VLC *vlc);
+
+#define INIT_VLC_LE 2
+#define INIT_VLC_USE_NEW_STATIC 4
+
+#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \
+ do { \
+ static VLC_TYPE table[static_size][2]; \
+ (vlc)->table = table; \
+ (vlc)->table_allocated = static_size; \
+ init_vlc(vlc, bits, a, b, c, d, e, f, g, INIT_VLC_USE_NEW_STATIC); \
+ } while (0)
+
+#endif /* AVCODEC_VLC_H */
--
2.1.4
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