* Due to a lack of sample files, only files with one channel are supported.
* u-law and ADPCM audio are unsupported for the same reason.
*
- * 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/intreadwrite.h"
+
#include "avformat.h"
+#include "internal.h"
#define LMLM4_I_FRAME 0x00
#define LMLM4_P_FRAME 0x01
#define LMLM4_MAX_PACKET_SIZE 1024 * 1024
-static int lmlm4_probe(AVProbeData * pd) {
+static int lmlm4_probe(AVProbeData *pd)
+{
unsigned char *buf = pd->buf;
unsigned int frame_type, packet_size;
- frame_type = AV_RB16(buf+2);
- packet_size = AV_RB32(buf+4);
+ frame_type = AV_RB16(buf + 2);
+ packet_size = AV_RB32(buf + 4);
if (!AV_RB16(buf) && frame_type <= LMLM4_MPEG1L2 && packet_size &&
frame_type != LMLM4_INVALID && packet_size <= LMLM4_MAX_PACKET_SIZE) {
-
if (frame_type == LMLM4_MPEG1L2) {
- if ((AV_RB16(buf+8) & 0xfffe) != 0xfffc)
+ if ((AV_RB16(buf + 8) & 0xfffe) != 0xfffc)
return 0;
/* I could calculate the audio framesize and compare with
* packet_size-8, but that seems overkill */
return AVPROBE_SCORE_MAX / 3;
- } else if (AV_RB24(buf+8) == 0x000001) { /* PES Signal */
+ } else if (AV_RB24(buf + 8) == 0x000001) { /* PES Signal */
return AVPROBE_SCORE_MAX / 5;
}
}
return 0;
}
-static int lmlm4_read_header(AVFormatContext *s, AVFormatParameters *ap) {
+static int lmlm4_read_header(AVFormatContext *s)
+{
AVStream *st;
- if (!(st = av_new_stream(s, 0)))
+ if (!(st = avformat_new_stream(s, NULL)))
return AVERROR(ENOMEM);
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_MPEG4;
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = AV_CODEC_ID_MPEG4;
st->need_parsing = AVSTREAM_PARSE_HEADERS;
- av_set_pts_info(st, 64, 1001, 30000);
+ avpriv_set_pts_info(st, 64, 1001, 30000);
- if (!(st = av_new_stream(s, 1)))
+ if (!(st = avformat_new_stream(s, NULL)))
return AVERROR(ENOMEM);
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_MP2;
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_MP2;
st->need_parsing = AVSTREAM_PARSE_HEADERS;
/* the parameters will be extracted from the compressed bitstream */
return 0;
}
-static int lmlm4_read_packet(AVFormatContext *s, AVPacket *pkt) {
+static int lmlm4_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
AVIOContext *pb = s->pb;
int ret;
unsigned int frame_type, packet_size, padding, frame_size;
- get_be16(pb); /* channel number */
- frame_type = get_be16(pb);
- packet_size = get_be32(pb);
+ avio_rb16(pb); /* channel number */
+ frame_type = avio_rb16(pb);
+ packet_size = avio_rb32(pb);
padding = -packet_size & 511;
frame_size = packet_size - 8;
if ((ret = av_get_packet(pb, pkt, frame_size)) <= 0)
return AVERROR(EIO);
- url_fskip(pb, padding);
+ avio_skip(pb, padding);
switch (frame_type) {
- case LMLM4_I_FRAME:
- pkt->flags = AV_PKT_FLAG_KEY;
- case LMLM4_P_FRAME:
- case LMLM4_B_FRAME:
- pkt->stream_index = 0;
- break;
- case LMLM4_MPEG1L2:
- pkt->stream_index = 1;
- break;
+ case LMLM4_I_FRAME:
+ pkt->flags = AV_PKT_FLAG_KEY;
+ case LMLM4_P_FRAME:
+ case LMLM4_B_FRAME:
+ pkt->stream_index = 0;
+ break;
+ case LMLM4_MPEG1L2:
+ pkt->stream_index = 1;
+ break;
}
return ret;
}
AVInputFormat ff_lmlm4_demuxer = {
- "lmlm4",
- NULL_IF_CONFIG_SMALL("lmlm4 raw format"),
- 0,
- lmlm4_probe,
- lmlm4_read_header,
- lmlm4_read_packet,
+ .name = "lmlm4",
+ .long_name = NULL_IF_CONFIG_SMALL("raw lmlm4"),
+ .read_probe = lmlm4_probe,
+ .read_header = lmlm4_read_header,
+ .read_packet = lmlm4_read_packet,
};