/* only for reading */
uint64_t data_offset; ///< beginning of the first data packet
- int64_t last_indexed_pts;
ASFIndex* index_ptr;
- uint32_t nb_index_count;
uint32_t nb_index_memory_alloc;
uint16_t maximum_packet;
+ uint32_t next_packet_number;
+ uint16_t next_packet_count;
+ int next_start_sec;
+ int end_sec;
} ASFContext;
static const AVCodecTag codec_asf_bmp_tags[] = {
enc = s->streams[n]->codec;
asf->streams[n].num = n + 1;
- asf->streams[n].seq = 0;
+ asf->streams[n].seq = 1;
switch(enc->codec_type) {
s->packet_size = PACKET_SIZE;
asf->nb_packets = 0;
- asf->last_indexed_pts = 0;
asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
- asf->nb_index_count = 0;
asf->maximum_packet = 0;
/* the data-chunk-size has to be 50, which is data_size - asf->data_offset
stream->seq++;
}
+static void update_index(AVFormatContext *s, int start_sec,
+ uint32_t packet_number, uint16_t packet_count)
+{
+ ASFContext *asf = s->priv_data;
+
+ if (start_sec > asf->next_start_sec) {
+ int i;
+
+ if (!asf->next_start_sec) {
+ asf->next_packet_number = packet_number;
+ asf->next_packet_count = packet_count;
+ }
+
+ if (start_sec > asf->nb_index_memory_alloc) {
+ asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
+ asf->index_ptr = av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
+ }
+ for (i = asf->next_start_sec; i < start_sec; i++) {
+ asf->index_ptr[i].packet_number = asf->next_packet_number;
+ asf->index_ptr[i].packet_count = asf->next_packet_count;
+ }
+ }
+ asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
+ asf->next_packet_number = packet_number;
+ asf->next_packet_count = packet_count;
+ asf->next_start_sec = start_sec;
+}
+
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
{
ASFContext *asf = s->priv_data;
AVCodecContext *codec;
uint32_t packet_number;
int64_t pts;
- int start_sec,i;
+ int start_sec;
int flags= pkt->flags;
codec = s->streams[pkt->stream_index]->codec;
packet_number = asf->nb_packets;
put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
+ start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
+ / ASF_INDEXED_INTERVAL);
+
/* check index */
if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
uint16_t packet_count = asf->nb_packets - packet_number;
- start_sec = (int)(pts / INT64_C(10000000));
- if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
- if (start_sec > asf->nb_index_memory_alloc) {
- asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
- asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
- }
- for(i=asf->nb_index_count;i<start_sec;i++) {
- // store
- asf->index_ptr[i].packet_number = (uint32_t)packet_number;
- asf->index_ptr[i].packet_count = (uint16_t)packet_count;
- asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)packet_count);
- }
- asf->nb_index_count = start_sec;
- asf->last_indexed_pts = pts;
- }
+ update_index(s, start_sec, packet_number, packet_count);
}
+ asf->end_sec = start_sec;
+
return 0;
}
/* write index */
data_size = avio_tell(s->pb);
- if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
- asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
+ if (!asf->is_streamed && asf->next_start_sec) {
+ update_index(s, asf->end_sec + 1, 0, 0);
+ asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
}
avio_flush(s->pb);
.write_header = asf_write_header,
.write_packet = asf_write_packet,
.write_trailer = asf_write_trailer,
- .flags = AVFMT_GLOBALHEADER,
- .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
+ .flags = AVFMT_GLOBALHEADER,
+ .codec_tag = (const AVCodecTag* const []){
+ codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
+ },
};
#endif
.write_header = asf_write_stream_header,
.write_packet = asf_write_packet,
.write_trailer = asf_write_trailer,
- .flags = AVFMT_GLOBALHEADER,
- .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
+ .flags = AVFMT_GLOBALHEADER,
+ .codec_tag = (const AVCodecTag* const []){
+ codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
+ },
};
#endif //CONFIG_ASF_STREAM_MUXER