/*
* Copyright (C) 2005 Matthieu CASTET
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library 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 this library; 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 <stdlib.h>
+
+#include "libavcodec/bitstream.h"
+#include "libavcodec/flac.h"
+
#include "avformat.h"
-#include "bitstream.h"
-#include "ogg2.h"
+#include "internal.h"
+#include "oggdec.h"
-#define FLAC_STREAMINFO_SIZE 0x22
+#define OGG_FLAC_METADATA_TYPE_STREAMINFO 0x7F
static int
flac_header (AVFormatContext * s, int idx)
{
- ogg_t *ogg = s->priv_data;
- ogg_stream_t *os = ogg->streams + idx;
+ struct ogg *ogg = s->priv_data;
+ struct ogg_stream *os = ogg->streams + idx;
AVStream *st = s->streams[idx];
- GetBitContext gb;
+ BitstreamContext bc;
int mdt;
if (os->buf[os->pstart] == 0xff)
return 0;
- init_get_bits(&gb, os->buf + os->pstart, os->psize*8);
- get_bits(&gb, 1); /* metadata_last */
- mdt = get_bits(&gb, 7);
+ bitstream_init(&bc, os->buf + os->pstart, os->psize * 8);
+ bitstream_skip(&bc, 1); /* metadata_last */
+ mdt = bitstream_read(&bc, 7);
+
+ if (mdt == OGG_FLAC_METADATA_TYPE_STREAMINFO) {
+ uint8_t *streaminfo_start = os->buf + os->pstart + 5 + 4 + 4 + 4;
+ uint32_t samplerate;
- if (mdt == 0x7f) {
- skip_bits(&gb, 4*8); /* "FLAC" */
- if(get_bits(&gb, 8) != 1) /* unsupported major version */
+ bitstream_skip(&bc, 4 * 8); /* "FLAC" */
+ if (bitstream_read(&bc, 8) != 1) /* unsupported major version */
return -1;
- skip_bits(&gb, 8 + 16); /* minor version + header count */
- skip_bits(&gb, 4*8); /* "fLaC" */
+ bitstream_skip(&bc, 8 + 16); /* minor version + header count */
+ bitstream_skip(&bc, 4 * 8); /* "fLaC" */
/* METADATA_BLOCK_HEADER */
- if (get_bits(&gb, 32) != FLAC_STREAMINFO_SIZE)
+ if (bitstream_read(&bc, 32) != FLAC_STREAMINFO_SIZE)
return -1;
- skip_bits(&gb, 16*2+24*2);
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_FLAC;
+ st->need_parsing = AVSTREAM_PARSE_HEADERS;
- st->codec->sample_rate = get_bits_long(&gb, 20);
- st->codec->channels = get_bits(&gb, 3) + 1;
+ st->codecpar->extradata =
+ av_malloc(FLAC_STREAMINFO_SIZE + AV_INPUT_BUFFER_PADDING_SIZE);
+ memcpy(st->codecpar->extradata, streaminfo_start, FLAC_STREAMINFO_SIZE);
+ st->codecpar->extradata_size = FLAC_STREAMINFO_SIZE;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_FLAC;
+ samplerate = AV_RB24(st->codecpar->extradata + 10) >> 4;
+ if (!samplerate)
+ return AVERROR_INVALIDDATA;
- st->codec->extradata =
- av_malloc(FLAC_STREAMINFO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
- memcpy (st->codec->extradata, os->buf + os->pstart + 5 + 4 + 4 + 4,
- FLAC_STREAMINFO_SIZE);
- st->codec->extradata_size = FLAC_STREAMINFO_SIZE;
-
- st->time_base.num = 1;
- st->time_base.den = st->codec->sample_rate;
- } else if (mdt == 4) {
- vorbis_comment (s, os->buf + os->pstart + 4, os->psize - 4);
+ avpriv_set_pts_info(st, 64, 1, samplerate);
+ } else if (mdt == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
+ ff_vorbis_stream_comment(s, st, os->buf + os->pstart + 4, os->psize - 4);
}
return 1;
}
-ogg_codec_t flac_codec = {
+static int
+old_flac_header (AVFormatContext * s, int idx)
+{
+ AVStream *st = s->streams[idx];
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_FLAC;
+
+ return 0;
+}
+
+const struct ogg_codec ff_flac_codec = {
.magic = "\177FLAC",
.magicsize = 5,
- .header = flac_header
+ .header = flac_header,
+ .nb_header = 2,
+};
+
+const struct ogg_codec ff_old_flac_codec = {
+ .magic = "fLaC",
+ .magicsize = 4,
+ .header = old_flac_header,
+ .nb_header = 0,
};