* GXF demuxer.
* Copyright (c) 2006 Reimar Doeffinger.
*
- * This library is free software; you can redistribute it and/or
+ * 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 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,
+ * 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 this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avformat.h"
-#include "common.h"
-
-typedef enum {
- PKT_MAP = 0xbc,
- PKT_MEDIA = 0xbf,
- PKT_EOS = 0xfb,
- PKT_FLT = 0xfc,
- PKT_UMF = 0xfd
-} pkt_type_t;
-typedef enum {
- MAT_NAME = 0x40,
- MAT_FIRST_FIELD = 0x41,
- MAT_LAST_FIELD = 0x42,
- MAT_MARK_IN = 0x43,
- MAT_MARK_OUT = 0x44,
- MAT_SIZE = 0x45
-} mat_tag_t;
-
-typedef enum {
- TRACK_NAME = 0x4c,
- TRACK_AUX = 0x4d,
- TRACK_VER = 0x4e,
- TRACK_MPG_AUX = 0x4f,
- TRACK_FPS = 0x50,
- TRACK_LINES = 0x51,
- TRACK_FPF = 0x52
-} track_tag_t;
+#include "libavutil/common.h"
+#include "avformat.h"
+#include "gxf.h"
typedef struct {
int64_t first_field;
static int gxf_probe(AVProbeData *p) {
static const uint8_t startcode[] = {0, 0, 0, 0, 1, 0xbc}; // start with map packet
static const uint8_t endcode[] = {0, 0, 0, 0, 0xe1, 0xe2};
- if (p->buf_size < 16)
- return 0;
if (!memcmp(p->buf, startcode, sizeof(startcode)) &&
!memcmp(&p->buf[16 - sizeof(endcode)], endcode, sizeof(endcode)))
return AVPROBE_SCORE_MAX;
case 20:
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_MPEG2VIDEO;
+ st->need_parsing = AVSTREAM_PARSE_HEADERS; //get keyframe flag etc.
break;
case 22:
case 23:
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_MPEG1VIDEO;
+ st->need_parsing = AVSTREAM_PARSE_HEADERS; //get keyframe flag etc.
break;
case 9:
st->codec->codec_type = CODEC_TYPE_AUDIO;
st->codec->channels = 2;
st->codec->sample_rate = 48000;
break;
+ // timecode tracks:
+ case 7:
+ case 8:
+ case 24:
+ st->codec->codec_type = CODEC_TYPE_DATA;
+ st->codec->codec_id = CODEC_ID_NONE;
+ break;
default:
st->codec->codec_type = CODEC_TYPE_UNKNOWN;
st->codec->codec_id = CODEC_ID_NONE;
/**
* \brief filters out interesting tags from material information.
- * \param len lenght of tag section, will be adjusted to contain remaining bytes
+ * \param len length of tag section, will be adjusted to contain remaining bytes
* \param si struct to store collected information into
*/
static void gxf_material_tags(ByteIOContext *pb, int *len, st_info_t *si) {
* \brief read index from FLT packet into stream 0 av_index
*/
static void gxf_read_index(AVFormatContext *s, int pkt_len) {
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
AVStream *st = s->streams[0];
uint32_t fields_per_map = get_le32(pb);
uint32_t map_cnt = get_le32(pb);
}
static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
pkt_type_t pkt_type;
int map_len;
int len;
}
}
if (pkt_type == PKT_UMF) {
- if (len >= 9) {
+ if (len >= 0x39) {
AVRational fps;
- len -= 9;
- url_fskip(pb, 5);
+ len -= 0x39;
+ url_fskip(pb, 5); // preamble
+ url_fskip(pb, 0x30); // payload description
fps = fps_umf2avr(get_le32(pb));
if (!main_timebase.num || !main_timebase.den) {
// this may not always be correct, but simply the best we can get
} else
av_log(s, AV_LOG_INFO, "GXF: UMF packet missing\n");
url_fskip(pb, len);
+ if (!main_timebase.num || !main_timebase.den)
+ main_timebase = (AVRational){1, 50}; // set some arbitrary fallback
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
- if (main_timebase.num && main_timebase.den)
- st->time_base = main_timebase;
- else {
- st->start_time = st->duration = AV_NOPTS_VALUE;
- }
+ av_set_pts_info(st, 32, main_timebase.num, main_timebase.den);
}
return 0;
}
int cur_track;
int64_t cur_timestamp = AV_NOPTS_VALUE;
int len;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
pkt_type_t type;
tmp = get_be32(pb);
start:
}
static int gxf_packet(AVFormatContext *s, AVPacket *pkt) {
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
pkt_type_t pkt_type;
int pkt_len;
while (!url_feof(pb)) {
pkt->dts = field_nr;
return ret;
}
- return AVERROR_IO;
+ return AVERROR(EIO);
}
static int gxf_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags) {
if (idx < st->nb_index_entries - 2)
maxlen = st->index_entries[idx + 2].pos - pos;
maxlen = FFMAX(maxlen, 200 * 1024);
- url_fseek(&s->pb, pos, SEEK_SET);
+ url_fseek(s->pb, pos, SEEK_SET);
found = gxf_resync_media(s, maxlen, -1, timestamp);
- if (ABS(found - timestamp) > 4)
+ if (FFABS(found - timestamp) > 4)
return -1;
return 0;
}
static int64_t gxf_read_timestamp(AVFormatContext *s, int stream_index,
int64_t *pos, int64_t pos_limit) {
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
int64_t res;
url_fseek(pb, *pos, SEEK_SET);
res = gxf_resync_media(s, pos_limit - *pos, -1, -1);
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