Put ff_flac_write_header() in a separate C file to allow it to be shared without

duplicating code or adding a dependency on vorbiscomment.o.

Originally committed as revision 22652 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/Makefile

@@ -71,7 +71,8 @@ OBJS-$(CONFIG_FILMSTRIP_MUXER)           += filmstripenc.o
 OBJS-$(CONFIG_FLAC_DEMUXER)              += flacdec.o raw.o id3v1.o \
                                             id3v2.o oggparsevorbis.o \
                                             vorbiscomment.o
-OBJS-$(CONFIG_FLAC_MUXER)                += flacenc.o vorbiscomment.o
+OBJS-$(CONFIG_FLAC_MUXER)                += flacenc.o flacenc_header.o \
+                                            vorbiscomment.o
 OBJS-$(CONFIG_FLIC_DEMUXER)              += flic.o
 OBJS-$(CONFIG_FLV_DEMUXER)               += flvdec.o
 OBJS-$(CONFIG_FLV_MUXER)                 += flvenc.o avc.o
@@ -103,7 +104,8 @@ OBJS-$(CONFIG_M4V_MUXER)                 += raw.o
 OBJS-$(CONFIG_MATROSKA_DEMUXER)          += matroskadec.o matroska.o \
                                             riff.o isom.o rmdec.o rm.o
 OBJS-$(CONFIG_MATROSKA_MUXER)            += matroskaenc.o matroska.o \
-                                            riff.o isom.o avc.o
+                                            riff.o isom.o avc.o \
+                                            flacenc_header.o
 OBJS-$(CONFIG_MJPEG_DEMUXER)             += raw.o
 OBJS-$(CONFIG_MJPEG_MUXER)               += raw.o
 OBJS-$(CONFIG_MLP_DEMUXER)               += raw.o id3v2.o

libavformat/flacenc.h

@@ -26,28 +26,7 @@
 #include "libavcodec/bytestream.h"
 #include "avformat.h"
 
-static int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec,
-                                int last_block)
-{
-    uint8_t header[8] = {
-        0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
-    };
-    uint8_t *streaminfo;
-    enum FLACExtradataFormat format;
-
-    header[4] = last_block ? 0x80 : 0x00;
-    if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo))
-        return -1;
-
-    /* write "fLaC" stream marker and first metadata block header if needed */
-    if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) {
-        put_buffer(pb, header, 8);
-    }
-
-    /* write STREAMINFO or full header */
-    put_buffer(pb, codec->extradata, codec->extradata_size);
-
-    return 0;
-}
+int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec,
+                         int last_block);
 
 #endif /* AVFORMAT_FLACENC_H */

libavformat/flacenc_header.c

@@ -0,0 +1,49 @@
+/*
+ * raw FLAC muxer
+ * Copyright (C) 2009 Justin Ruggles
+ *
+ * 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/flac.h"
+#include "libavcodec/bytestream.h"
+#include "avformat.h"
+#include "flacenc.h"
+
+int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec,
+                         int last_block)
+{
+    uint8_t header[8] = {
+        0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
+    };
+    uint8_t *streaminfo;
+    enum FLACExtradataFormat format;
+
+    header[4] = last_block ? 0x80 : 0x00;
+    if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo))
+        return -1;
+
+    /* write "fLaC" stream marker and first metadata block header if needed */
+    if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) {
+        put_buffer(pb, header, 8);
+    }
+
+    /* write STREAMINFO or full header */
+    put_buffer(pb, codec->extradata, codec->extradata_size);
+
+    return 0;
+}