1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/bytestream.h b/contrib/ffmpeg/libavcodec/bytestream.h
new file mode 100644
index 000000000..d1e9f82ed
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/bytestream.h
@@ -0,0 +1,58 @@
+/*
+ * Bytestream functions
+ * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
+ *
+ * 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 FFMPEG_BYTESTREAM_H
+#define FFMPEG_BYTESTREAM_H
+
+#define DEF(name, bytes, read, write)\
+static av_always_inline unsigned int bytestream_get_ ## name(uint8_t **b){\
+    (*b) += bytes;\
+    return read(*b - bytes);\
+}\
+static av_always_inline void bytestream_put_ ##name(uint8_t **b, const unsigned int value){\
+    write(*b, value);\
+    (*b) += bytes;\
+};
+
+DEF(le32, 4, AV_RL32, AV_WL32)
+DEF(le24, 3, AV_RL24, AV_WL24)
+DEF(le16, 2, AV_RL16, AV_WL16)
+DEF(be32, 4, AV_RB32, AV_WB32)
+DEF(be24, 3, AV_RB24, AV_WB24)
+DEF(be16, 2, AV_RB16, AV_WB16)
+DEF(byte, 1, AV_RB8 , AV_WB8 )
+
+#undef DEF
+
+static av_always_inline unsigned int bytestream_get_buffer(uint8_t **b, uint8_t *dst, unsigned int size)
+{
+    memcpy(dst, *b, size);
+    (*b) += size;
+    return size;
+}
+
+static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
+{
+    memcpy(*b, src, size);
+    (*b) += size;
+}
+
+#endif /* FFMPEG_BYTESTREAM_H */