static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
{
GXFContext *gxf = s->priv_data;
AVPacket new_pkt;
int i;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
GXFStreamContext *sc = &gxf->streams[i];
if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if (pkt && pkt->stream_index == i) {
av_fifo_write(&sc->audio_buffer, pkt->data, pkt->size);
pkt = NULL;
}
if (flush || av_fifo_size(&sc->audio_buffer) >= GXF_AUDIO_PACKET_SIZE) {
if (!pkt && gxf_new_audio_packet(gxf, sc, &new_pkt, flush) > 0) {
pkt = &new_pkt;
break; /* add pkt right now into list */
}
}
} else if (pkt && pkt->stream_index == i) {
if (sc->dts_delay == GXF_NODELAY) /* adjust dts if needed */
sc->dts_delay = pkt->dts;
pkt->dts -= sc->dts_delay;
}
}
return av_interleave_packet_per_dts(s, out, pkt, flush);
}
int dv_assemble_frame(DVMuxContext *c, AVStream* st,
const uint8_t* data, int data_size, uint8_t** frame)
{
int i, reqasize;
*frame = &c->frame_buf[0];
reqasize = 4 * dv_audio_frame_size(c->sys, c->frames);
switch (st->codec->codec_type) {
case CODEC_TYPE_VIDEO:
/* FIXME: we have to have more sensible approach than this one */
if (c->has_video)
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n", c->frames);
memcpy(*frame, data, c->sys->frame_size);
c->has_video = 1;
break;
case CODEC_TYPE_AUDIO:
for (i = 0; i < c->n_ast && st != c->ast[i]; i++);
/* FIXME: we have to have more sensible approach than this one */
if (av_fifo_size(&c->audio_data[i]) + data_size >= 100*AVCODEC_MAX_AUDIO_FRAME_SIZE)
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient video data or severe sync problem.\n", c->frames);
av_fifo_write(&c->audio_data[i], data, data_size);
/* Lets see if we've got enough audio for one DV frame */
c->has_audio |= ((reqasize <= av_fifo_size(&c->audio_data[i])) << i);
break;
default:
break;
}
/* Lets see if we have enough data to construct one DV frame */
if (c->has_video == 1 && c->has_audio + 1 == 1<<c->n_ast) {
dv_inject_metadata(c, *frame);
for (i=0; i<c->n_ast; i++) {
dv_inject_audio(c, i, *frame);
av_fifo_drain(&c->audio_data[i], reqasize);
}
c->has_video = 0;
c->has_audio = 0;
c->frames++;
return c->sys->frame_size;
}
return 0;
}
