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avformat/voc: add seeking support 

Fixes Ticket1333

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-01-11 00:16:41 +01:00
parent 87deebe11a
commit c8f83a4c78
5 changed files with 80 additions and 19 deletions
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1
Changelog
View File

@ -12,6 +12,7 @@ version <next>:
- cropdetect support for non 8bpp, absolute (if limit >= 1) and relative (if limit < 1.0) threshold
- Camellia symmetric block cipher
- OpenH264 encoder wrapper
- VOC seeking support
version 2.5:

2
libavformat/version.h
View File

@ -31,7 +31,7 @@
#define LIBAVFORMAT_VERSION_MAJOR 56
#define LIBAVFORMAT_VERSION_MINOR 18
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \

1
libavformat/voc.h
View File

@ -27,6 +27,7 @@
typedef struct voc_dec_context {
int64_t remaining_size;
int64_t pts;
} VocDecContext;
typedef enum voc_type {

44
libavformat/vocdec.c
View File

@ -71,6 +71,15 @@ ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
int size, tmp_codec=-1;
int sample_rate = 0;
int channels = 1;
int64_t duration;
int ret;
av_add_index_entry(st,
avio_tell(pb),
voc->pts,
voc->remaining_size,
0,
AVINDEX_KEYFRAME);
while (!voc->remaining_size) {
type = avio_r8(pb);
@ -156,7 +165,17 @@ ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
max_size = 2048;
size = FFMIN(voc->remaining_size, max_size);
voc->remaining_size -= size;
return av_get_packet(pb, pkt, size);
ret = av_get_packet(pb, pkt, size);
pkt->dts = pkt->pts = voc->pts;
duration = av_get_audio_frame_duration(st->codec, size);
if (duration > 0 && voc->pts != AV_NOPTS_VALUE)
voc->pts += duration;
else
voc->pts = AV_NOPTS_VALUE;
return ret;
}
static int voc_read_packet(AVFormatContext *s, AVPacket *pkt)
@ -164,6 +183,28 @@ static int voc_read_packet(AVFormatContext *s, AVPacket *pkt)
return ff_voc_get_packet(s, pkt, s->streams[0], 0);
}
static int voc_read_seek(AVFormatContext *s, int stream_index,
int64_t timestamp, int flags)
{
VocDecContext *voc = s->priv_data;
AVStream *st = s->streams[stream_index];
int index = av_index_search_timestamp(st, timestamp, flags);
if (index >= 0 && index < st->nb_index_entries - 1) {
AVIndexEntry *e = &st->index_entries[index];
avio_seek(s->pb, e->pos, SEEK_SET);
voc->pts = e->timestamp;
voc->remaining_size = e->size;
return 0;
} else if (st->nb_index_entries && st->index_entries[0].timestamp <= timestamp) {
AVIndexEntry *e = &st->index_entries[st->nb_index_entries - 1];
// prepare context for seek_frame_generic()
voc->pts = e->timestamp;
voc->remaining_size = e->size;
}
return -1;
}
AVInputFormat ff_voc_demuxer = {
.name = "voc",
.long_name = NULL_IF_CONFIG_SMALL("Creative Voice"),
@ -171,5 +212,6 @@ AVInputFormat ff_voc_demuxer = {
.read_probe = voc_probe,
.read_header = voc_read_header,
.read_packet = voc_read_packet,
.read_seek = voc_read_seek,
.codec_tag = (const AVCodecTag* const []){ ff_voc_codec_tags, 0 },
};

51
tests/ref/seek/lavf-voc
View File

@ -1,27 +1,44 @@
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 32 size: 1024
ret:-1 st:-1 flags:0 ts:-1.000000
ret:-1 st:-1 flags:1 ts: 1.894167
ret:-1 st: 0 flags:0 ts: 0.788330
ret: 0 st:-1 flags:0 ts:-1.000000
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 32 size: 1024
ret: 0 st:-1 flags:1 ts: 1.894167
ret:-EOF
ret: 0 st: 0 flags:0 ts: 0.788330
ret: 0 st: 0 flags:1 dts: 0.800773 pts: 0.800773 pos: 33956 size: 1024
ret:-1 st: 0 flags:1 ts:-0.317494
ret:-1 st:-1 flags:0 ts: 2.576668
ret:-1 st:-1 flags:1 ts: 1.470835
ret:-1 st: 0 flags:0 ts: 0.365012
ret: 0 st:-1 flags:1 ts: 1.470835
ret:-EOF
ret: 0 st: 0 flags:0 ts: 0.365012
ret: 0 st: 0 flags:1 dts: 0.376834 pts: 0.376834 pos: 15452 size: 1024
ret:-1 st: 0 flags:1 ts:-0.740834
ret:-1 st:-1 flags:0 ts: 2.153336
ret:-1 st:-1 flags:1 ts: 1.047503
ret:-1 st: 0 flags:0 ts:-0.058328
ret:-1 st: 0 flags:1 ts: 2.835848
ret: 0 st:-1 flags:1 ts: 1.047503
ret:-EOF
ret: 0 st: 0 flags:0 ts:-0.058328
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 32 size: 1024
ret: 0 st: 0 flags:1 ts: 2.835848
ret:-EOF
ret:-1 st:-1 flags:0 ts: 1.730004
ret:-1 st:-1 flags:1 ts: 0.624171
ret:-1 st: 0 flags:0 ts:-0.481669
ret:-1 st: 0 flags:1 ts: 2.412507
ret: 0 st:-1 flags:1 ts: 0.624171
ret: 0 st: 0 flags:1 dts: 0.612356 pts: 0.612356 pos: 25732 size: 1024
ret: 0 st: 0 flags:0 ts:-0.481669
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 32 size: 1024
ret: 0 st: 0 flags:1 ts: 2.412507
ret:-EOF
ret:-1 st:-1 flags:0 ts: 1.306672
ret:-1 st:-1 flags:1 ts: 0.200839
ret:-1 st: 0 flags:0 ts:-0.904986
ret:-1 st: 0 flags:1 ts: 1.989167
ret:-1 st:-1 flags:0 ts: 0.883340
ret: 0 st:-1 flags:1 ts: 0.200839
ret: 0 st: 0 flags:1 dts: 0.188417 pts: 0.188417 pos: 7228 size: 1024
ret: 0 st: 0 flags:0 ts:-0.904986
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 32 size: 1024
ret: 0 st: 0 flags:1 ts: 1.989167
ret:-EOF
ret: 0 st:-1 flags:0 ts: 0.883340
ret: 0 st: 0 flags:1 dts: 0.894981 pts: 0.894981 pos: 38068 size: 1024
ret:-1 st:-1 flags:1 ts:-0.222493
ret:-1 st: 0 flags:0 ts: 2.671673
ret:-1 st: 0 flags:1 ts: 1.565849
ret:-1 st:-1 flags:0 ts: 0.460008
ret: 0 st: 0 flags:1 ts: 1.565849
ret:-EOF
ret: 0 st:-1 flags:0 ts: 0.460008
ret: 0 st: 0 flags:1 dts: 0.471043 pts: 0.471043 pos: 19564 size: 1024
ret:-1 st:-1 flags:1 ts:-0.645825