-/****************************************************************************
- * stream_Demux*: create a demuxer for an outpout stream (allow demuxer chain)
- ****************************************************************************/
-typedef struct
-{
- /* Data buffer */
- block_fifo_t *p_fifo;
- block_t *p_block;
-
- int64_t i_pos;
-
- /* Demuxer */
- char *psz_name;
- es_out_t *out;
- demux_t *p_demux;
-
-} d_stream_sys_t;
-
-static int DStreamRead ( stream_t *, void *p_read, unsigned int i_read );
-static int DStreamPeek ( stream_t *, const uint8_t **pp_peek, unsigned int i_peek );
-static int DStreamControl( stream_t *, int i_query, va_list );
-static void* DStreamThread ( vlc_object_t * );
-
-
-stream_t *__stream_DemuxNew( vlc_object_t *p_obj, const char *psz_demux,
- es_out_t *out )
-{
- /* We create a stream reader, and launch a thread */
- stream_t *s;
- d_stream_sys_t *p_sys;
-
- if( psz_demux == NULL || *psz_demux == '\0' ) return NULL;
-
- s = vlc_stream_create( p_obj );
- if( s == NULL )
- return NULL;
- s->pf_read = DStreamRead;
- s->pf_peek = DStreamPeek;
- s->pf_control= DStreamControl;
-
- s->i_char_width = 1;
- s->b_little_endian = false;
-
- s->p_sys = malloc( sizeof( d_stream_sys_t) );
- if( s->p_sys == NULL )
- {
- vlc_object_release( s );
- return NULL;
- }
- p_sys = (d_stream_sys_t*)s->p_sys;
-
- p_sys->i_pos = 0;
- p_sys->out = out;
- p_sys->p_demux = NULL;
- p_sys->p_block = NULL;
- p_sys->psz_name = strdup( psz_demux );
-
- /* decoder fifo */
- if( ( p_sys->p_fifo = block_FifoNew() ) == NULL )
- {
- vlc_object_release( s );
- free( p_sys->psz_name );
- free( p_sys );
- return NULL;
- }
-
- if( vlc_thread_create( s, "stream out", DStreamThread,
- VLC_THREAD_PRIORITY_INPUT, false ) )
- {
- vlc_object_release( s );
- free( p_sys->psz_name );
- free( p_sys );
- return NULL;
- }
-
- return s;
-}
-
-void stream_DemuxSend( stream_t *s, block_t *p_block )
-{
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- if( p_block ) block_FifoPut( p_sys->p_fifo, p_block );
-}
-
-void stream_DemuxDelete( stream_t *s )
-{
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- block_t *p_empty;
-
- vlc_object_kill( s );
- if( p_sys->p_demux )
- vlc_object_kill( p_sys->p_demux );
- p_empty = block_New( s, 1 ); p_empty->i_buffer = 0;
- block_FifoPut( p_sys->p_fifo, p_empty );
- vlc_thread_join( s );
-
- if( p_sys->p_demux ) demux_Delete( p_sys->p_demux );
- if( p_sys->p_block ) block_Release( p_sys->p_block );
-
- block_FifoRelease( p_sys->p_fifo );
- free( p_sys->psz_name );
- free( p_sys );
-
- vlc_object_release( s );
-}
-
-
-static int DStreamRead( stream_t *s, void *p_read, unsigned int i_read )
-{
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- uint8_t *p_out = p_read;
- int i_out = 0;
-
- //msg_Dbg( s, "DStreamRead: wanted %d bytes", i_read );
-
- while( !s->b_die && !s->b_error && i_read )
- {
- block_t *p_block = p_sys->p_block;
- int i_copy;
-
- if( !p_block )
- {
- p_block = block_FifoGet( p_sys->p_fifo );
- if( !p_block ) s->b_error = 1;
- p_sys->p_block = p_block;
- }
-
- if( p_block && i_read )
- {
- i_copy = __MIN( i_read, p_block->i_buffer );
- if( p_out && i_copy ) memcpy( p_out, p_block->p_buffer, i_copy );
- i_read -= i_copy;
- i_out += i_copy;
- p_block->i_buffer -= i_copy;
- p_block->p_buffer += i_copy;
-
- if( !p_block->i_buffer )
- {
- block_Release( p_block );
- p_sys->p_block = NULL;
- }
- }
- }
-
- p_sys->i_pos += i_out;
- return i_out;
-}
-
-static int DStreamPeek( stream_t *s, const uint8_t **pp_peek, unsigned int i_peek )
-{
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- block_t **pp_block = &p_sys->p_block;
- int i_out = 0;
- *pp_peek = 0;
-
- //msg_Dbg( s, "DStreamPeek: wanted %d bytes", i_peek );
-
- while( !s->b_die && !s->b_error && i_peek )
- {
- int i_copy;
-
- if( !*pp_block )
- {
- *pp_block = block_FifoGet( p_sys->p_fifo );
- if( !*pp_block ) s->b_error = 1;
- }
-
- if( *pp_block && i_peek )
- {
- i_copy = __MIN( i_peek, (*pp_block)->i_buffer );
- i_peek -= i_copy;
- i_out += i_copy;
-
- if( i_peek ) pp_block = &(*pp_block)->p_next;
- }
- }
-
- if( p_sys->p_block )
- {
- p_sys->p_block = block_ChainGather( p_sys->p_block );
- *pp_peek = p_sys->p_block->p_buffer;
- }
-
- return i_out;
-}
-
-static int DStreamControl( stream_t *s, int i_query, va_list args )
-{
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- int64_t *p_i64;
- bool *p_b;
- int *p_int;
-
- switch( i_query )
- {
- case STREAM_GET_SIZE:
- p_i64 = (int64_t*) va_arg( args, int64_t * );
- *p_i64 = 0;
- return VLC_SUCCESS;
-
- case STREAM_CAN_SEEK:
- p_b = (bool*) va_arg( args, bool * );
- *p_b = false;
- return VLC_SUCCESS;
-
- case STREAM_CAN_FASTSEEK:
- p_b = (bool*) va_arg( args, bool * );
- *p_b = false;
- return VLC_SUCCESS;
-
- case STREAM_GET_POSITION:
- p_i64 = (int64_t*) va_arg( args, int64_t * );
- *p_i64 = p_sys->i_pos;
- return VLC_SUCCESS;
-
- case STREAM_SET_POSITION:
- {
- int64_t i64 = (int64_t)va_arg( args, int64_t );
- int i_skip;
- if( i64 < p_sys->i_pos ) return VLC_EGENERIC;
- i_skip = i64 - p_sys->i_pos;
-
- while( i_skip > 0 )
- {
- int i_read = DStreamRead( s, NULL, (long)i_skip );
- if( i_read <= 0 ) return VLC_EGENERIC;
- i_skip -= i_read;
- }
- return VLC_SUCCESS;
- }
-
- case STREAM_GET_MTU:
- p_int = (int*) va_arg( args, int * );
- *p_int = 0;
- return VLC_SUCCESS;
-
- case STREAM_CONTROL_ACCESS:
- case STREAM_GET_CONTENT_TYPE:
- case STREAM_SET_RECORD_STATE:
- return VLC_EGENERIC;
-
- default:
- msg_Err( s, "invalid DStreamControl query=0x%x", i_query );
- return VLC_EGENERIC;
- }
-}
-
-static void* DStreamThread( vlc_object_t* p_this )
-{
- stream_t *s = (stream_t *)p_this;
- d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
- demux_t *p_demux;
- int canc = vlc_savecancel ();
-
- /* Create the demuxer */
- if( !(p_demux = demux_New( s, "", p_sys->psz_name, "", s, p_sys->out,
- false )) )
- {
- return NULL;
- }
-
- p_sys->p_demux = p_demux;
-
- /* Main loop */
- while( !s->b_die && !p_demux->b_die )
- {
- if( p_demux->pf_demux( p_demux ) <= 0 ) break;
- }
-
- vlc_restorecancel (canc);
- vlc_object_kill( p_demux );
- return NULL;
-}
-