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add ff_index_search_timestamp and ff_add_index_entry

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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit e6fb5a4f78)
This commit is contained in:
Peter Ross
2011-01-22 20:03:22 +11:00
committed by Michael Niedermayer
parent 566f17b62d
commit 2d9fd1810b
3 changed files with 45 additions and 15 deletions
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14
libavformat/internal.h
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@@ -226,4 +226,18 @@ void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
*/ */
int ff_find_stream_index(AVFormatContext *s, int id); int ff_find_stream_index(AVFormatContext *s, int id);
/**
* Internal version of av_index_search_timestamp
*/
int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
int64_t wanted_timestamp, int flags);
/**
* Internal version of av_add_index_entry
*/
int ff_add_index_entry(AVIndexEntry **index_entries,
int *nb_index_entries,
unsigned int *index_entries_allocated_size,
int64_t pos, int64_t timestamp, int size, int distance, int flags);
#endif /* AVFORMAT_INTERNAL_H */ #endif /* AVFORMAT_INTERNAL_H */

45
libavformat/utils.c
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@@ -1370,28 +1370,30 @@ void ff_reduce_index(AVFormatContext *s, int stream_index)
} }
} }
int av_add_index_entry(AVStream *st, int ff_add_index_entry(AVIndexEntry **index_entries,
int64_t pos, int64_t timestamp, int size, int distance, int flags) int *nb_index_entries,
unsigned int *index_entries_allocated_size,
int64_t pos, int64_t timestamp, int size, int distance, int flags)
{ {
AVIndexEntry *entries, *ie; AVIndexEntry *entries, *ie;
int index; int index;
if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry)) if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
return -1; return -1;
entries = av_fast_realloc(st->index_entries, entries = av_fast_realloc(*index_entries,
&st->index_entries_allocated_size, index_entries_allocated_size,
(st->nb_index_entries + 1) * (*nb_index_entries + 1) *
sizeof(AVIndexEntry)); sizeof(AVIndexEntry));
if(!entries) if(!entries)
return -1; return -1;
st->index_entries= entries; *index_entries= entries;
index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY); index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
if(index<0){ if(index<0){
index= st->nb_index_entries++; index= (*nb_index_entries)++;
ie= &entries[index]; ie= &entries[index];
assert(index==0 || ie[-1].timestamp < timestamp); assert(index==0 || ie[-1].timestamp < timestamp);
}else{ }else{
@@ -1399,8 +1401,8 @@ int av_add_index_entry(AVStream *st,
if(ie->timestamp != timestamp){ if(ie->timestamp != timestamp){
if(ie->timestamp <= timestamp) if(ie->timestamp <= timestamp)
return -1; return -1;
memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index)); memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
st->nb_index_entries++; (*nb_index_entries)++;
}else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
distance= ie->min_distance; distance= ie->min_distance;
} }
@@ -1414,11 +1416,17 @@ int av_add_index_entry(AVStream *st,
return index; return index;
} }
int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int av_add_index_entry(AVStream *st,
int flags) int64_t pos, int64_t timestamp, int size, int distance, int flags)
{
return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
&st->index_entries_allocated_size, pos,
timestamp, size, distance, flags);
}
int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
int64_t wanted_timestamp, int flags)
{ {
AVIndexEntry *entries= st->index_entries;
int nb_entries= st->nb_index_entries;
int a, b, m; int a, b, m;
int64_t timestamp; int64_t timestamp;
@@ -1450,6 +1458,13 @@ int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
return m; return m;
} }
int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
int flags)
{
return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
wanted_timestamp, flags);
}
#define DEBUG_SEEK #define DEBUG_SEEK
int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){

1
libavformat/wtv.c
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@@ -28,6 +28,7 @@
#include "libavutil/intreadwrite.h" #include "libavutil/intreadwrite.h"
#include "libavutil/intfloat_readwrite.h" #include "libavutil/intfloat_readwrite.h"
#include "avformat.h" #include "avformat.h"
#include "internal.h"
#include "riff.h" #include "riff.h"
#include "asf.h" #include "asf.h"
#include "mpegts.h" #include "mpegts.h"