es_out_id_t *p_es;
decoder_t *p_packetizer;
+
+ mtime_t i_pts;
+ int64_t i_bytes;
+ mtime_t i_time_offset;
+ int i_bitrate_avg;
};
static int Demux( demux_t * );
static int Control( demux_t *, int, va_list );
#define M4A_PACKET_SIZE 4096
+#define M4A_PTS_START 1
/*****************************************************************************
* Open: initializes demux structures
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
p_sys->p_es = NULL;
p_sys->b_start = VLC_TRUE;
+ p_sys->i_pts = 0;
+ p_sys->i_bytes = 0;
+ p_sys->i_time_offset = 0;
+ p_sys->i_bitrate_avg = 0;
/* Load the mpeg 4 audio packetizer */
INIT_APACKETIZER( p_sys->p_packetizer, 'm', 'p', '4', 'a' );
return 0;
}
- p_block_in->i_pts = p_block_in->i_dts = p_sys->b_start ? 1 : 0;
+ p_block_in->i_pts = p_block_in->i_dts = p_sys->b_start ? M4A_PTS_START : 0;
p_sys->b_start = VLC_FALSE;
while( (p_block_out = p_sys->p_packetizer->pf_packetize(
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
p_block_out->p_next = NULL;
+
+ p_sys->i_pts = p_block_out->i_pts;
+ if( p_sys->i_pts > M4A_PTS_START + I64C(500000) )
+ p_sys->i_bitrate_avg =
+ 8*I64C(1000000)*p_sys->i_bytes/(p_sys->i_pts-M4A_PTS_START);
+
+ p_sys->i_bytes += p_block_out->i_buffer;
es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
p_block_out = p_next;
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
- if( i_query == DEMUX_SET_TIME ) return VLC_EGENERIC;
- else return demux2_vaControlHelper( p_demux->s, 0, -1,
- 0, 1, i_query, args );
+ demux_sys_t *p_sys = p_demux->p_sys;
+ int64_t *pi64;
+ int i_ret;
+
+ switch( i_query )
+ {
+ case DEMUX_GET_TIME:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = p_sys->i_pts + p_sys->i_time_offset;
+ return VLC_SUCCESS;
+
+ case DEMUX_SET_TIME: /* TODO high precision seek for multi-input */
+ default:
+ i_ret = demux2_vaControlHelper( p_demux->s, 0, -1,
+ p_sys->i_bitrate_avg, 1, i_query, args);
+ /* Fix time_offset */
+ if( (i_query == DEMUX_SET_POSITION || i_query == DEMUX_SET_TIME ) &&
+ i_ret == VLC_SUCCESS && p_sys->i_bitrate_avg > 0 )
+ {
+ int64_t i_time = I64C(8000000) * stream_Tell(p_demux->s) /
+ p_sys->i_bitrate_avg;
+
+ if( i_time >= 0 )
+ p_sys->i_time_offset = i_time - p_sys->i_pts;
+ }
+ return i_ret;
+ }
}
+