* raw FLAC muxer
* Copyright (C) 2009 Justin Ruggles
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/channel_layout.h"
+
#include "libavcodec/flac.h"
-#include "libavcodec/bytestream.h"
+
#include "avformat.h"
#include "flacenc.h"
-int ff_flac_write_header(AVIOContext *pb, AVCodecContext *codec,
- int last_block)
+int ff_flac_write_header(AVIOContext *pb, uint8_t *extradata,
+ int extradata_size, 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) {
- avio_write(pb, header, 8);
- }
+ if (extradata_size < FLAC_STREAMINFO_SIZE)
+ return AVERROR_INVALIDDATA;
- /* write STREAMINFO or full header */
- avio_write(pb, codec->extradata, codec->extradata_size);
+ /* write "fLaC" stream marker and first metadata block header */
+ avio_write(pb, header, 8);
+ /* write STREAMINFO */
+ avio_write(pb, extradata, FLAC_STREAMINFO_SIZE);
+
+ return 0;
+}
+
+int ff_flac_is_native_layout(uint64_t channel_layout)
+{
+ if (channel_layout == AV_CH_LAYOUT_MONO ||
+ channel_layout == AV_CH_LAYOUT_STEREO ||
+ channel_layout == AV_CH_LAYOUT_SURROUND ||
+ channel_layout == AV_CH_LAYOUT_QUAD ||
+ channel_layout == AV_CH_LAYOUT_5POINT0 ||
+ channel_layout == AV_CH_LAYOUT_5POINT1 ||
+ channel_layout == AV_CH_LAYOUT_6POINT1 ||
+ channel_layout == AV_CH_LAYOUT_7POINT1)
+ return 1;
return 0;
}