uint32_t i_file_offset;
uint32_t i_time_offset;
uint32_t i_frame_index;
-} rm_index_t;
+} real_index_t;
struct demux_sys_t
{
int64_t i_index_offset;
bool b_seek;
- rm_index_t *p_index;
+ real_index_t *p_index;
};
-static int Demux( demux_t *p_demux );
-static int Control( demux_t *p_demux, int i_query, va_list args );
+static int Demux( demux_t * );
+static int Control( demux_t *, int i_query, va_list args );
+
+
+static void DemuxVideo( demux_t *, real_track_t *tk, mtime_t i_dts, unsigned i_flags );
+static void DemuxAudio( demux_t *, real_track_t *tk, mtime_t i_pts, unsigned i_flags );
+
+static int ControlSeekByte( demux_t *, int64_t i_bytes );
+static int ControlSeekTime( demux_t *, mtime_t i_time );
static int HeaderRead( demux_t *p_demux );
static int CodecParse( demux_t *p_demux, int i_len, int i_num );
-static char *StreamReadString2( stream_t *s );
-static char *MemoryReadString1( const uint8_t **pp_data, int *pi_data );
-
static void RVoid( const uint8_t **pp_data, int *pi_data, int i_size );
static int RLength( const uint8_t **pp_data, int *pi_data );
static uint8_t R8( const uint8_t **pp_data, int *pi_data );
/*****************************************************************************
* Demux:
*****************************************************************************/
+static int Demux( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ uint8_t header[18];
+
+ if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
+ p_sys->i_data_packets_count )
+ {
+ if( stream_Read( p_demux->s, header, 18 ) < 18 )
+ return 0;
+
+ if( memcmp( header, "DATA", 4 ) )
+ return 0;
+
+ p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
+ p_sys->i_data_size = GetDWBE( &header[4] );
+ p_sys->i_data_packets_count = GetDWBE( &header[10] );
+ p_sys->i_data_packets = 0;
+ p_sys->i_data_offset_next = GetDWBE( &header[14] );
+
+ msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
+ p_sys->i_data_packets_count,
+ (unsigned int)p_sys->i_data_offset_next );
+ }
+
+ /* Read Packet Header */
+ if( stream_Read( p_demux->s, header, 12 ) < 12 )
+ return 0;
+ //const int i_version = GetWBE( &header[0] );
+ const int i_size = GetWBE( &header[2] ) - 12;
+ const int i_id = GetWBE( &header[4] );
+ const int64_t i_pts = 1 + 1000 * GetDWBE( &header[6] );
+ const int i_flags= header[11]; /* flags 0x02 -> keyframe */
+
+ p_sys->i_data_packets++;
+
+ if( i_size <= 0 )
+ {
+ msg_Err( p_demux, "Got a NUKK size to read. (Invalid format?)" );
+ return 1;
+ }
+
+ assert( i_size <= sizeof(p_sys->buffer) );
+
+ p_sys->i_buffer = stream_Read( p_demux->s, p_sys->buffer, i_size );
+ if( p_sys->i_buffer < i_size )
+ return 0;
+
+ real_track_t *tk = NULL;
+ for( int i = 0; i < p_sys->i_track; i++ )
+ {
+ if( p_sys->track[i]->i_id == i_id )
+ tk = p_sys->track[i];
+ }
+
+ if( !tk )
+ {
+ msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
+ return 1;
+ }
+
+ if( tk->fmt.i_cat == VIDEO_ES )
+ {
+ DemuxVideo( p_demux, tk, i_pts, i_flags );
+ }
+ else
+ {
+ assert( tk->fmt.i_cat == AUDIO_ES );
+ DemuxAudio( p_demux, tk, i_pts, i_flags );
+ }
+
+ /* Update PCR */
+ mtime_t i_pcr = 0;
+ for( int i = 0; i < p_sys->i_track; i++ )
+ {
+ real_track_t *tk = p_sys->track[i];
+
+ if( i_pcr <= 0 || ( tk->i_last_dts > 0 && tk->i_last_dts > i_pcr ) )
+ i_pcr = tk->i_last_dts;
+ }
+ if( i_pcr > 0 && i_pcr != p_sys->i_pcr )
+ {
+ p_sys->i_pcr = i_pcr;
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
+ }
+ return 1;
+}
+
+/*****************************************************************************
+ * Control:
+ *****************************************************************************/
+static int Control( demux_t *p_demux, int i_query, va_list args )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ double f, *pf;
+ int64_t i64;
+ int64_t *pi64;
+
+ switch( i_query )
+ {
+ case DEMUX_GET_POSITION:
+ pf = (double*) va_arg( args, double* );
+
+ /* read stream size maybe failed in rtsp streaming,
+ so use duration to determin the position at first */
+ if( p_sys->i_our_duration > 0 )
+ {
+ *pf = (double)p_sys->i_pcr / 1000.0 / p_sys->i_our_duration;
+ return VLC_SUCCESS;
+ }
+
+ *pf = 0.0;
+ i64 = stream_Size( p_demux->s );
+ if( i64 > 0 )
+ *pf = (double)1.0*stream_Tell( p_demux->s ) / (double)i64;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_TIME:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+
+ if( p_sys->i_our_duration > 0 )
+ {
+ *pi64 = p_sys->i_pcr;
+ return VLC_SUCCESS;
+ }
+
+ /* same as GET_POSTION */
+ i64 = stream_Size( p_demux->s );
+ if( p_sys->i_our_duration > 0 && i64 > 0 )
+ {
+ *pi64 = (int64_t)( 1000.0 * p_sys->i_our_duration * stream_Tell( p_demux->s ) / i64 );
+ return VLC_SUCCESS;
+ }
+
+ *pi64 = 0;
+ return VLC_EGENERIC;
+
+ case DEMUX_SET_POSITION:
+ f = (double) va_arg( args, double );
+ i64 = (int64_t) ( stream_Size( p_demux->s ) * f );
+
+ if( !p_sys->p_index && i64 != 0 )
+ {
+ /* TODO seek */
+ msg_Err( p_demux,"Seek No Index Real File failed!" );
+ return VLC_EGENERIC; // no index!
+ }
+ else if( i64 == 0 )
+ {
+ /* it is a rtsp stream , it is specials in access/rtsp/... */
+ msg_Dbg(p_demux, "Seek in real rtsp stream!");
+ p_sys->i_pcr = INT64_C(1000) * ( p_sys->i_our_duration * f );
+ p_sys->b_seek = true;
+ return stream_Seek( p_demux->s, p_sys->i_pcr );
+ }
+ return ControlSeekByte( p_demux, i64 );
+
+ case DEMUX_SET_TIME:
+ if( !p_sys->p_index )
+ return VLC_EGENERIC;
+
+ i64 = (int64_t) va_arg( args, int64_t );
+ return ControlSeekTime( p_demux, i64 );
+
+ case DEMUX_GET_LENGTH:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+
+ *pi64 = 0;
+ if( p_sys->i_our_duration <= 0 )
+ return VLC_EGENERIC;
+
+ /* our stored duration is in ms, so... */
+ *pi64 = INT64_C(1000) * p_sys->i_our_duration;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_META:
+ {
+ vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
+
+ /* the core will crash if we provide NULL strings, so check
+ * every string first */
+ if( p_sys->psz_title )
+ vlc_meta_SetTitle( p_meta, p_sys->psz_title );
+ if( p_sys->psz_artist )
+ vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
+ if( p_sys->psz_copyright )
+ vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
+ if( p_sys->psz_description )
+ vlc_meta_SetDescription( p_meta, p_sys->psz_description );
+ return VLC_SUCCESS;
+ }
+
+ case DEMUX_GET_FPS:
+ default:
+ return VLC_EGENERIC;
+ }
+ return VLC_EGENERIC;
+}
+
+/*****************************************************************************
+ * Helpers: demux
+ *****************************************************************************/
static void CheckPcr( demux_t *p_demux, real_track_t *tk, mtime_t i_dts )
{
demux_sys_t *p_sys = p_demux->p_sys;
es_out_Send( p_demux->out, tk->p_es, p_block );
}
-static void DemuxAudio( demux_t *p_demux, real_track_t *tk, mtime_t i_pts, unsigned int i_flags )
+static void DemuxAudio( demux_t *p_demux, real_track_t *tk, mtime_t i_pts, unsigned i_flags )
{
switch( tk->fmt.i_codec )
{
}
}
-static int Demux( demux_t *p_demux )
-{
- demux_sys_t *p_sys = p_demux->p_sys;
- uint8_t header[18];
-
- if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
- p_sys->i_data_packets_count )
- {
- if( stream_Read( p_demux->s, header, 18 ) < 18 )
- return 0;
-
- if( memcmp( header, "DATA", 4 ) )
- return 0;
-
- p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
- p_sys->i_data_size = GetDWBE( &header[4] );
- p_sys->i_data_packets_count = GetDWBE( &header[10] );
- p_sys->i_data_packets = 0;
- p_sys->i_data_offset_next = GetDWBE( &header[14] );
-
- msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
- p_sys->i_data_packets_count,
- (unsigned int)p_sys->i_data_offset_next );
- }
-
- /* Read Packet Header */
- if( stream_Read( p_demux->s, header, 12 ) < 12 )
- return 0;
- //const int i_version = GetWBE( &header[0] );
- const int i_size = GetWBE( &header[2] ) - 12;
- const int i_id = GetWBE( &header[4] );
- const int64_t i_pts = 1 + 1000 * GetDWBE( &header[6] );
- const int i_flags= header[11]; /* flags 0x02 -> keyframe */
-
- p_sys->i_data_packets++;
-
- if( i_size <= 0 )
- {
- msg_Err( p_demux, "Got a NUKK size to read. (Invalid format?)" );
- return 1;
- }
-
- assert( i_size <= sizeof(p_sys->buffer) );
-
- p_sys->i_buffer = stream_Read( p_demux->s, p_sys->buffer, i_size );
- if( p_sys->i_buffer < i_size )
- return 0;
-
- real_track_t *tk = NULL;
- for( int i = 0; i < p_sys->i_track; i++ )
- {
- if( p_sys->track[i]->i_id == i_id )
- tk = p_sys->track[i];
- }
-
- if( !tk )
- {
- msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
- return 1;
- }
-
- if( tk->fmt.i_cat == VIDEO_ES )
- {
- DemuxVideo( p_demux, tk, i_pts, i_flags );
- }
- else
- {
- assert( tk->fmt.i_cat == AUDIO_ES );
- DemuxAudio( p_demux, tk, i_pts, i_flags );
- }
-
- /* Update PCR */
- mtime_t i_pcr = 0;
- for( int i = 0; i < p_sys->i_track; i++ )
- {
- real_track_t *tk = p_sys->track[i];
-
- if( i_pcr <= 0 || ( tk->i_last_dts > 0 && tk->i_last_dts > i_pcr ) )
- i_pcr = tk->i_last_dts;
- }
- if( i_pcr > 0 && i_pcr != p_sys->i_pcr )
- {
- p_sys->i_pcr = i_pcr;
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
- }
- return 1;
-}
-
/*****************************************************************************
- * Control:
+ * Helpers: seek/control
*****************************************************************************/
-static int ControlGoToIndex( demux_t *p_demux, rm_index_t *p_index )
-{
- demux_sys_t *p_sys = p_demux->p_sys;
-
- p_sys->b_seek = true;
- p_sys->i_pcr = INT64_C(1000) * p_index->i_time_offset;
- for( int i = 0; i < p_sys->i_track; i++ )
- p_sys->track[i]->i_last_dts = 0;
- return stream_Seek( p_demux->s, p_index->i_file_offset );
-}
-static int ControlSeekTime( demux_t *p_demux, mtime_t i_time )
-{
- demux_sys_t *p_sys = p_demux->p_sys;
- rm_index_t *p_index = p_sys->p_index;
-
- while( p_index->i_file_offset != 0 )
- {
- if( p_index->i_time_offset * INT64_C(1000) > i_time )
- {
- if( p_index != p_sys->p_index )
- p_index--;
- break;
- }
- p_index++;
- }
- if( p_index->i_file_offset == 0 )
- return VLC_EGENERIC;
- return ControlGoToIndex( p_demux, p_index );
-}
-static int ControlSeekByte( demux_t *p_demux, int64_t i_bytes )
-{
- demux_sys_t *p_sys = p_demux->p_sys;
- rm_index_t *p_index = p_sys->p_index;
-
- while( p_index->i_file_offset != 0 )
- {
- if( p_index->i_file_offset > i_bytes )
- {
- if( p_index != p_sys->p_index )
- p_index--;
- break;
- }
- p_index++;
- }
- if( p_index->i_file_offset == 0 )
- return VLC_EGENERIC;
- return ControlGoToIndex( p_demux, p_index );
-}
-
-static int Control( demux_t *p_demux, int i_query, va_list args )
+static int ControlGoToIndex( demux_t *p_demux, real_index_t *p_index )
{
demux_sys_t *p_sys = p_demux->p_sys;
- double f, *pf;
- int64_t i64;
- int64_t *pi64;
-
- switch( i_query )
- {
- case DEMUX_GET_POSITION:
- pf = (double*) va_arg( args, double* );
-
- /* read stream size maybe failed in rtsp streaming,
- so use duration to determin the position at first */
- if( p_sys->i_our_duration > 0 )
- {
- *pf = (double)p_sys->i_pcr / 1000.0 / p_sys->i_our_duration;
- return VLC_SUCCESS;
- }
-
- *pf = 0.0;
- i64 = stream_Size( p_demux->s );
- if( i64 > 0 )
- *pf = (double)1.0*stream_Tell( p_demux->s ) / (double)i64;
- return VLC_SUCCESS;
-
- case DEMUX_GET_TIME:
- pi64 = (int64_t*)va_arg( args, int64_t * );
-
- if( p_sys->i_our_duration > 0 )
- {
- *pi64 = p_sys->i_pcr;
- return VLC_SUCCESS;
- }
-
- /* same as GET_POSTION */
- i64 = stream_Size( p_demux->s );
- if( p_sys->i_our_duration > 0 && i64 > 0 )
- {
- *pi64 = (int64_t)( 1000.0 * p_sys->i_our_duration * stream_Tell( p_demux->s ) / i64 );
- return VLC_SUCCESS;
- }
-
- *pi64 = 0;
- return VLC_EGENERIC;
-
- case DEMUX_SET_POSITION:
- f = (double) va_arg( args, double );
- i64 = (int64_t) ( stream_Size( p_demux->s ) * f );
-
- if( !p_sys->p_index && i64 != 0 )
- {
- /* TODO seek */
- msg_Err( p_demux,"Seek No Index Real File failed!" );
- return VLC_EGENERIC; // no index!
- }
- else if( i64 == 0 )
- {
- /* it is a rtsp stream , it is specials in access/rtsp/... */
- msg_Dbg(p_demux, "Seek in real rtsp stream!");
- p_sys->i_pcr = INT64_C(1000) * ( p_sys->i_our_duration * f );
- p_sys->b_seek = true;
- return stream_Seek( p_demux->s, p_sys->i_pcr );
- }
- return ControlSeekByte( p_demux, i64 );
-
- case DEMUX_SET_TIME:
- if( !p_sys->p_index )
- return VLC_EGENERIC;
-
- i64 = (int64_t) va_arg( args, int64_t );
- return ControlSeekTime( p_demux, i64 );
-
- case DEMUX_GET_LENGTH:
- pi64 = (int64_t*)va_arg( args, int64_t * );
-
- *pi64 = 0;
- if( p_sys->i_our_duration <= 0 )
- return VLC_EGENERIC;
- /* our stored duration is in ms, so... */
- *pi64 = INT64_C(1000) * p_sys->i_our_duration;
- return VLC_SUCCESS;
+ p_sys->b_seek = true;
+ p_sys->i_pcr = INT64_C(1000) * p_index->i_time_offset;
+ for( int i = 0; i < p_sys->i_track; i++ )
+ p_sys->track[i]->i_last_dts = 0;
+ return stream_Seek( p_demux->s, p_index->i_file_offset );
+}
+static int ControlSeekTime( demux_t *p_demux, mtime_t i_time )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ real_index_t *p_index = p_sys->p_index;
- case DEMUX_GET_META:
+ while( p_index->i_file_offset != 0 )
+ {
+ if( p_index->i_time_offset * INT64_C(1000) > i_time )
{
- vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
-
- /* the core will crash if we provide NULL strings, so check
- * every string first */
- if( p_sys->psz_title )
- vlc_meta_SetTitle( p_meta, p_sys->psz_title );
- if( p_sys->psz_artist )
- vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
- if( p_sys->psz_copyright )
- vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
- if( p_sys->psz_description )
- vlc_meta_SetDescription( p_meta, p_sys->psz_description );
- return VLC_SUCCESS;
+ if( p_index != p_sys->p_index )
+ p_index--;
+ break;
}
-
- case DEMUX_GET_FPS:
- default:
- return VLC_EGENERIC;
+ p_index++;
}
- return VLC_EGENERIC;
+ if( p_index->i_file_offset == 0 )
+ return VLC_EGENERIC;
+ return ControlGoToIndex( p_demux, p_index );
}
-
-/*****************************************************************************
- * ReadRealIndex:
- *****************************************************************************/
-static void ReadRealIndex( demux_t *p_demux )
+static int ControlSeekByte( demux_t *p_demux, int64_t i_bytes )
{
demux_sys_t *p_sys = p_demux->p_sys;
- uint8_t buffer[100];
- uint32_t i_id;
- uint32_t i_size;
- int i_version;
- unsigned int i;
+ real_index_t *p_index = p_sys->p_index;
- uint32_t i_index_count;
+ while( p_index->i_file_offset != 0 )
+ {
+ if( p_index->i_file_offset > i_bytes )
+ {
+ if( p_index != p_sys->p_index )
+ p_index--;
+ break;
+ }
+ p_index++;
+ }
+ if( p_index->i_file_offset == 0 )
+ return VLC_EGENERIC;
+ return ControlGoToIndex( p_demux, p_index );
+}
- if ( p_sys->i_index_offset == 0 )
- return;
+/*****************************************************************************
+ * Helpers: header reading
+ *****************************************************************************/
- stream_Seek( p_demux->s, p_sys->i_index_offset );
+/**
+ * This function will read a pascal string with size stored in 2 bytes from
+ * a stream_t.
+ *
+ * FIXME what is the right charset ?
+ */
+static char *StreamReadString2( stream_t *s )
+{
+ uint8_t p_tmp[2];
- if ( stream_Read( p_demux->s, buffer, 20 ) < 20 )
- return ;
+ if( stream_Read( s, p_tmp, 2 ) < 2 )
+ return NULL;
- i_id = VLC_FOURCC( buffer[0], buffer[1], buffer[2], buffer[3] );
- i_size = GetDWBE( &buffer[4] );
- i_version = GetWBE( &buffer[8] );
+ const int i_length = GetWBE( p_tmp );
+ if( i_length <= 0 )
+ return NULL;
- msg_Dbg( p_demux, "Real index %4.4s size=%d version=%d",
- (char*)&i_id, i_size, i_version );
+ char *psz_string = calloc( 1, i_length + 1 );
- if( (i_size < 20) && (i_id != VLC_FOURCC('I','N','D','X')) )
- return;
+ stream_Read( s, psz_string, i_length ); /* Valid even if !psz_string */
- i_index_count = GetDWBE( &buffer[10] );
+ if( psz_string )
+ EnsureUTF8( psz_string );
+ return psz_string;
+}
- msg_Dbg( p_demux, "Real Index : num : %d ", i_index_count );
+/**
+ * This function will read a pascal string with size stored in 1 byte from a
+ * memory buffer.
+ *
+ * FIXME what is the right charset ?
+ */
+static char *MemoryReadString1( const uint8_t **pp_data, int *pi_data )
+{
+ const uint8_t *p_data = *pp_data;
+ int i_data = *pi_data;
- if( i_index_count >= ( 0xffffffff / sizeof( rm_index_t ) ) )
- return;
+ char *psz_string = NULL;
- if( GetDWBE( &buffer[16] ) > 0 )
- msg_Dbg( p_demux, "Real Index: Does next index exist? %d ",
- GetDWBE( &buffer[16] ) );
+ if( i_data < 1 )
+ goto exit;
- p_sys->p_index = malloc( ( i_index_count + 1 ) * sizeof( rm_index_t ) );
- if( p_sys->p_index == NULL )
- return;
+ int i_length = *p_data++; i_data--;
+ if( i_length > i_data )
+ i_length = i_data;
- for( i = 0; i < i_index_count; i++ )
+ if( i_length > 0 )
{
- if( stream_Read( p_demux->s, buffer, 14 ) < 14 )
- return ;
-
- if( GetWBE( &buffer[0] ) != 0 )
- {
- msg_Dbg( p_demux, "Real Index: invaild version of index entry %d ",
- GetWBE( &buffer[0] ) );
- return;
- }
+ psz_string = strndup( (const char*)p_data, i_length );
+ if( psz_string )
+ EnsureUTF8( psz_string );
- p_sys->p_index[i].i_time_offset = GetDWBE( &buffer[2] );
- p_sys->p_index[i].i_file_offset = GetDWBE( &buffer[6] );
- p_sys->p_index[i].i_frame_index = GetDWBE( &buffer[10] );
- msg_Dbg( p_demux,
- "Real Index: time %"PRIu32" file %"PRIu32" frame %"PRIu32,
- p_sys->p_index[i].i_time_offset,
- p_sys->p_index[i].i_file_offset,
- p_sys->p_index[i].i_frame_index );
+ p_data += i_length;
+ i_data -= i_length;
}
- memset( p_sys->p_index + i_index_count, 0, sizeof( rm_index_t ) );
+
+exit:
+ *pp_data = p_data;
+ *pi_data = i_data;
+ return psz_string;
}
-/*****************************************************************************
- * HeaderRead:
- *****************************************************************************/
+/**
+ * This function parses(skip) the .RMF identification chunk.
+ */
static int HeaderRMF( demux_t *p_demux )
{
uint8_t p_buffer[8];
GetDWBE( &p_buffer[0] ), GetDWBE( &p_buffer[4] ) );
return VLC_SUCCESS;
}
+/**
+ * This function parses the PROP properties chunk.
+ */
static int HeaderPROP( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
return VLC_SUCCESS;
}
+/**
+ * This functions parses the CONT commentairs chunk.
+ */
static int HeaderCONT( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
return VLC_SUCCESS;
}
+/**
+ * This function parses the MDPR (Media properties) chunk.
+ */
static int HeaderMDPR( demux_t *p_demux )
{
uint8_t p_buffer[30];
- /* Media properties header */
if( stream_Read( p_demux->s, p_buffer, 30 ) < 30 )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
+/**
+ * This function parses DATA chunk (it contains the actual movie data).
+ */
static int HeaderDATA( demux_t *p_demux, uint32_t i_size )
{
demux_sys_t *p_sys = p_demux->p_sys;
(unsigned int)p_sys->i_data_offset_next );
return VLC_SUCCESS;
}
+/**
+ * This function parses the INDX (movie index chunk).
+ * It is optional but seeking without it is ... hard.
+ */
+static void HeaderINDX( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ uint8_t buffer[20];
+
+ uint32_t i_index_count;
+
+ if( p_sys->i_index_offset == 0 )
+ return;
+
+ stream_Seek( p_demux->s, p_sys->i_index_offset );
+
+ if( stream_Read( p_demux->s, buffer, 20 ) < 20 )
+ return ;
+
+ const uint32_t i_id = VLC_FOURCC( buffer[0], buffer[1], buffer[2], buffer[3] );
+ const uint32_t i_size = GetDWBE( &buffer[4] );
+ int i_version = GetWBE( &buffer[8] );
+
+ msg_Dbg( p_demux, "Real index %4.4s size=%d version=%d",
+ (char*)&i_id, i_size, i_version );
+
+ if( (i_size < 20) && (i_id != VLC_FOURCC('I','N','D','X')) )
+ return;
+
+ i_index_count = GetDWBE( &buffer[10] );
+
+ msg_Dbg( p_demux, "Real Index : num : %d ", i_index_count );
+
+ if( i_index_count >= ( 0xffffffff / sizeof(*p_sys->p_index) ) )
+ return;
+
+ if( GetDWBE( &buffer[16] ) > 0 )
+ msg_Dbg( p_demux, "Real Index: Does next index exist? %d ",
+ GetDWBE( &buffer[16] ) );
+
+ /* One extra entry is allocated (that MUST be set to 0) to identify the
+ * end of the index.
+ * TODO add a clean entry count (easier to build index on the fly) */
+ p_sys->p_index = calloc( i_index_count + 1, sizeof(*p_sys->p_index) );
+ if( !p_sys->p_index )
+ return;
+
+ for( unsigned int i = 0; i < i_index_count; i++ )
+ {
+ uint8_t p_entry[14];
+
+ if( stream_Read( p_demux->s, p_entry, 14 ) < 14 )
+ return ;
+
+ if( GetWBE( &p_entry[0] ) != 0 )
+ {
+ msg_Dbg( p_demux, "Real Index: invaild version of index entry %d ",
+ GetWBE( &p_entry[0] ) );
+ return;
+ }
+
+ real_index_t *p_idx = &p_sys->p_index[i];
+
+ p_idx->i_time_offset = GetDWBE( &p_entry[2] );
+ p_idx->i_file_offset = GetDWBE( &p_entry[6] );
+ p_idx->i_frame_index = GetDWBE( &p_entry[10] );
+
+ msg_Dbg( p_demux,
+ "Real Index: time %"PRIu32" file %"PRIu32" frame %"PRIu32,
+ p_idx->i_time_offset,
+ p_idx->i_file_offset,
+ p_idx->i_frame_index );
+ }
+}
+
+/**
+ * This function parses the complete RM headers and move the
+ * stream pointer to the data to be read.
+ */
static int HeaderRead( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
{
const int64_t i_position = stream_Tell( p_demux->s );
- ReadRealIndex( p_demux );
+ HeaderINDX( p_demux );
if( stream_Seek( p_demux->s, i_position ) )
return VLC_EGENERIC;
return VLC_SUCCESS;
}
-/**
- * This function will read a pascal string with size stored in 1 byte from a
- * memory buffer.
- *
- * FIXME what is the right charset ?
- */
-static char *MemoryReadString1( const uint8_t **pp_data, int *pi_data )
-{
- const uint8_t *p_data = *pp_data;
- int i_data = *pi_data;
-
- char *psz_string = NULL;
-
- if( i_data < 1 )
- goto exit;
-
- int i_length = *p_data++; i_data--;
- if( i_length > i_data )
- i_length = i_data;
-
- if( i_length > 0 )
- {
- psz_string = strndup( (const char*)p_data, i_length );
- if( psz_string )
- EnsureUTF8( psz_string );
-
- p_data += i_length;
- i_data -= i_length;
- }
-
-exit:
- *pp_data = p_data;
- *pi_data = i_data;
- return psz_string;
-}
-/**
- * This function will read a pascal string with size stored in 2 bytes from
- * a stream_t.
- *
- * FIXME what is the right charset ?
- */
-static char *StreamReadString2( stream_t *s )
-{
- uint8_t p_tmp[2];
-
- if( stream_Read( s, p_tmp, 2 ) < 2 )
- return NULL;
-
- const int i_length = GetWBE( p_tmp );
- if( i_length <= 0 )
- return NULL;
-
- char *psz_string = calloc( 1, i_length + 1 );
-
- stream_Read( s, psz_string, i_length ); /* Valid even if !psz_string */
-
- if( psz_string )
- EnsureUTF8( psz_string );
- return psz_string;
-}
-
static void CodecMetaRead( demux_t *p_demux, const uint8_t **pp_data, int *pi_data )
{
demux_sys_t *p_sys = p_demux->p_sys;
}
return VLC_SUCCESS;
}
-/* Small memory buffer helpers */
+
+/*****************************************************************************
+ * Helpers: memory buffer fct.
+ *****************************************************************************/
static void RVoid( const uint8_t **pp_data, int *pi_data, int i_size )
{
if( i_size > *pi_data )
projects / vlc / commitdiff