#include "libavutil/common.h"
#include "avformat.h"
+#include "internal.h"
#include "gxf.h"
struct gxf_stream_info {
/**
* \brief parses a packet header, extracting type and length
- * \param pb ByteIOContext to read header from
+ * \param pb AVIOContext to read header from
* \param type detected packet type is stored here
* \param length detected packet length, excluding header is stored here
* \return 0 if header not found or contains invalid data, 1 otherwise
*/
-static int parse_packet_header(ByteIOContext *pb, GXFPktType *type, int *length) {
- if (get_be32(pb))
+static int parse_packet_header(AVIOContext *pb, GXFPktType *type, int *length) {
+ if (avio_rb32(pb))
return 0;
- if (get_byte(pb) != 1)
+ if (avio_r8(pb) != 1)
return 0;
- *type = get_byte(pb);
- *length = get_be32(pb);
+ *type = avio_r8(pb);
+ *length = avio_rb32(pb);
if ((*length >> 24) || *length < 16)
return 0;
*length -= 16;
- if (get_be32(pb))
+ if (avio_rb32(pb))
return 0;
- if (get_byte(pb) != 0xe1)
+ if (avio_r8(pb) != 0xe1)
return 0;
- if (get_byte(pb) != 0xe2)
+ if (avio_r8(pb) != 0xe2)
return 0;
return 1;
}
static int get_sindex(AVFormatContext *s, int id, int format) {
int i;
AVStream *st = NULL;
- for (i = 0; i < s->nb_streams; i++) {
- if (s->streams[i]->id == id)
- return i;
- }
+ i = ff_find_stream_index(s, id);
+ if (i >= 0)
+ return i;
st = av_new_stream(s, id);
if (!st)
return AVERROR(ENOMEM);
* \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, struct gxf_stream_info *si) {
+static void gxf_material_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si) {
si->first_field = AV_NOPTS_VALUE;
si->last_field = AV_NOPTS_VALUE;
while (*len >= 2) {
- GXFMatTag tag = get_byte(pb);
- int tlen = get_byte(pb);
+ GXFMatTag tag = avio_r8(pb);
+ int tlen = avio_r8(pb);
*len -= 2;
if (tlen > *len)
return;
*len -= tlen;
if (tlen == 4) {
- uint32_t value = get_be32(pb);
+ uint32_t value = avio_rb32(pb);
if (tag == MAT_FIRST_FIELD)
si->first_field = value;
else if (tag == MAT_LAST_FIELD)
si->last_field = value;
} else
- url_fskip(pb, tlen);
+ avio_skip(pb, tlen);
}
}
* \param len length of tag section, will be adjusted to contain remaining bytes
* \param si struct to store collected information into
*/
-static void gxf_track_tags(ByteIOContext *pb, int *len, struct gxf_stream_info *si) {
+static void gxf_track_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si) {
si->frames_per_second = (AVRational){0, 0};
si->fields_per_frame = 0;
while (*len >= 2) {
- GXFTrackTag tag = get_byte(pb);
- int tlen = get_byte(pb);
+ GXFTrackTag tag = avio_r8(pb);
+ int tlen = avio_r8(pb);
*len -= 2;
if (tlen > *len)
return;
*len -= tlen;
if (tlen == 4) {
- uint32_t value = get_be32(pb);
+ uint32_t value = avio_rb32(pb);
if (tag == TRACK_FPS)
si->frames_per_second = fps_tag2avr(value);
else if (tag == TRACK_FPF && (value == 1 || value == 2))
si->fields_per_frame = value;
} else
- url_fskip(pb, tlen);
+ avio_skip(pb, tlen);
}
}
* \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;
+ AVIOContext *pb = s->pb;
AVStream *st = s->streams[0];
- uint32_t fields_per_map = get_le32(pb);
- uint32_t map_cnt = get_le32(pb);
+ uint32_t fields_per_map = avio_rl32(pb);
+ uint32_t map_cnt = avio_rl32(pb);
int i;
pkt_len -= 8;
if (s->flags & AVFMT_FLAG_IGNIDX) {
- url_fskip(pb, pkt_len);
+ avio_skip(pb, pkt_len);
return;
}
if (map_cnt > 1000) {
}
if (pkt_len < 4 * map_cnt) {
av_log(s, AV_LOG_ERROR, "invalid index length\n");
- url_fskip(pb, pkt_len);
+ avio_skip(pb, pkt_len);
return;
}
pkt_len -= 4 * map_cnt;
av_add_index_entry(st, 0, 0, 0, 0, 0);
for (i = 0; i < map_cnt; i++)
- av_add_index_entry(st, (uint64_t)get_le32(pb) * 1024,
+ av_add_index_entry(st, (uint64_t)avio_rl32(pb) * 1024,
i * (uint64_t)fields_per_map + 1, 0, 0, 0);
- url_fskip(pb, pkt_len);
+ avio_skip(pb, pkt_len);
}
static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
GXFPktType pkt_type;
int map_len;
int len;
return 0;
}
map_len -= 2;
- if (get_byte(pb) != 0x0e0 || get_byte(pb) != 0xff) {
+ if (avio_r8(pb) != 0x0e0 || avio_r8(pb) != 0xff) {
av_log(s, AV_LOG_ERROR, "unknown version or invalid map preamble\n");
return 0;
}
map_len -= 2;
- len = get_be16(pb); // length of material data section
+ len = avio_rb16(pb); // length of material data section
if (len > map_len) {
av_log(s, AV_LOG_ERROR, "material data longer than map data\n");
return 0;
}
map_len -= len;
gxf_material_tags(pb, &len, &si);
- url_fskip(pb, len);
+ avio_skip(pb, len);
map_len -= 2;
- len = get_be16(pb); // length of track description
+ len = avio_rb16(pb); // length of track description
if (len > map_len) {
av_log(s, AV_LOG_ERROR, "track description longer than map data\n");
return 0;
AVStream *st;
int idx;
len -= 4;
- track_type = get_byte(pb);
- track_id = get_byte(pb);
- track_len = get_be16(pb);
+ track_type = avio_r8(pb);
+ track_id = avio_r8(pb);
+ track_len = avio_rb16(pb);
len -= track_len;
gxf_track_tags(pb, &track_len, &si);
- url_fskip(pb, track_len);
+ avio_skip(pb, track_len);
if (!(track_type & 0x80)) {
av_log(s, AV_LOG_ERROR, "invalid track type %x\n", track_type);
continue;
if (len < 0)
av_log(s, AV_LOG_ERROR, "invalid track description length specified\n");
if (map_len)
- url_fskip(pb, map_len);
+ avio_skip(pb, map_len);
if (!parse_packet_header(pb, &pkt_type, &len)) {
av_log(s, AV_LOG_ERROR, "sync lost in header\n");
return -1;
if (len >= 0x39) {
AVRational fps;
len -= 0x39;
- url_fskip(pb, 5); // preamble
- url_fskip(pb, 0x30); // payload description
- fps = fps_umf2avr(get_le32(pb));
+ avio_skip(pb, 5); // preamble
+ avio_skip(pb, 0x30); // payload description
+ fps = fps_umf2avr(avio_rl32(pb));
if (!main_timebase.num || !main_timebase.den) {
// this may not always be correct, but simply the best we can get
main_timebase.num = fps.den;
av_log(s, AV_LOG_INFO, "UMF packet too short\n");
} else
av_log(s, AV_LOG_INFO, "UMF packet missing\n");
- url_fskip(pb, len);
+ avio_skip(pb, len);
// set a fallback value, 60000/1001 is specified for audio-only files
// so use that regardless of why we do not know the video frame rate.
if (!main_timebase.num || !main_timebase.den)
{ \
if (!max_interval-- || url_feof(pb)) \
goto out; \
- tmp = tmp << 8 | get_byte(pb); \
+ tmp = tmp << 8 | avio_r8(pb); \
}
/**
int cur_track;
int64_t cur_timestamp = AV_NOPTS_VALUE;
int len;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
GXFPktType type;
- tmp = get_be32(pb);
+ tmp = avio_rb32(pb);
start:
while (tmp)
READ_ONE();
READ_ONE();
if (tmp != 1)
goto start;
- last_pos = url_ftell(pb);
- if (url_fseek(pb, -5, SEEK_CUR) < 0)
+ last_pos = avio_tell(pb);
+ if (avio_seek(pb, -5, SEEK_CUR) < 0)
goto out;
if (!parse_packet_header(pb, &type, &len) || type != PKT_MEDIA) {
- if (url_fseek(pb, last_pos, SEEK_SET) < 0)
+ if (avio_seek(pb, last_pos, SEEK_SET) < 0)
goto out;
goto start;
}
- get_byte(pb);
- cur_track = get_byte(pb);
- cur_timestamp = get_be32(pb);
- last_found_pos = url_ftell(pb) - 16 - 6;
+ avio_r8(pb);
+ cur_track = avio_r8(pb);
+ cur_timestamp = avio_rb32(pb);
+ last_found_pos = avio_tell(pb) - 16 - 6;
if ((track >= 0 && track != cur_track) || (timestamp >= 0 && timestamp > cur_timestamp)) {
- if (url_fseek(pb, last_pos, SEEK_SET) >= 0)
+ if (avio_seek(pb, last_pos, SEEK_SET) >= 0)
goto start;
}
out:
if (last_found_pos)
- url_fseek(pb, last_found_pos, SEEK_SET);
+ avio_seek(pb, last_found_pos, SEEK_SET);
return cur_timestamp;
}
static int gxf_packet(AVFormatContext *s, AVPacket *pkt) {
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
GXFPktType pkt_type;
int pkt_len;
while (!url_feof(pb)) {
continue;
}
if (pkt_type != PKT_MEDIA) {
- url_fskip(pb, pkt_len);
+ avio_skip(pb, pkt_len);
continue;
}
if (pkt_len < 16) {
continue;
}
pkt_len -= 16;
- track_type = get_byte(pb);
- track_id = get_byte(pb);
+ track_type = avio_r8(pb);
+ track_id = avio_r8(pb);
stream_index = get_sindex(s, track_id, track_type);
if (stream_index < 0)
return stream_index;
st = s->streams[stream_index];
- field_nr = get_be32(pb);
- field_info = get_be32(pb);
- get_be32(pb); // "timeline" field number
- get_byte(pb); // flags
- get_byte(pb); // reserved
+ field_nr = avio_rb32(pb);
+ field_info = avio_rb32(pb);
+ avio_rb32(pb); // "timeline" field number
+ avio_r8(pb); // flags
+ avio_r8(pb); // reserved
if (st->codec->codec_id == CODEC_ID_PCM_S24LE ||
st->codec->codec_id == CODEC_ID_PCM_S16LE) {
int first = field_info >> 16;
int last = field_info & 0xffff; // last is exclusive
int bps = av_get_bits_per_sample(st->codec->codec_id)>>3;
if (first <= last && last*bps <= pkt_len) {
- url_fskip(pb, first*bps);
+ avio_skip(pb, first*bps);
skip = pkt_len - last*bps;
pkt_len = (last-first)*bps;
} else
}
ret = av_get_packet(pb, pkt, pkt_len);
if (skip)
- url_fskip(pb, skip);
+ avio_skip(pb, skip);
pkt->stream_index = stream_index;
pkt->dts = field_nr;
return ret;
if (idx < st->nb_index_entries - 2)
maxlen = st->index_entries[idx + 2].pos - pos;
maxlen = FFMAX(maxlen, 200 * 1024);
- res = url_fseek(s->pb, pos, SEEK_SET);
+ res = avio_seek(s->pb, pos, SEEK_SET);
if (res < 0)
return res;
found = gxf_resync_media(s, maxlen, -1, timestamp);
static int64_t gxf_read_timestamp(AVFormatContext *s, int stream_index,
int64_t *pos, int64_t pos_limit) {
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int64_t res;
- if (url_fseek(pb, *pos, SEEK_SET) < 0)
+ if (avio_seek(pb, *pos, SEEK_SET) < 0)
return AV_NOPTS_VALUE;
res = gxf_resync_media(s, pos_limit - *pos, -1, -1);
- *pos = url_ftell(pb);
+ *pos = avio_tell(pb);
return res;
}
-AVInputFormat gxf_demuxer = {
+AVInputFormat ff_gxf_demuxer = {
"gxf",
NULL_IF_CONFIG_SMALL("GXF format"),
0,
projects / ffmpeg / blobdiff