/***************************************************************************** * real.c: Real demuxer. ***************************************************************************** * Copyright (C) 2004, 2006-2007 the VideoLAN team * $Id$ * * Authors: Laurent Aimar * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /** * Status of this demuxer: * Real Media format * ----------------- * * version v3 w/ 14_4/lpcJ is ok. * version v4/5: - atrac3 is ok. * - cook is ok. * - raac, racp are ok. * - dnet is twisted "The byte order of the data is reversed * from standard AC3" but ok * - 28_8 is ok. * - sipr is ok. * - ralf is unsupported, but hardly any sample exist. * - mp3 is unsupported, one sample exists... * * Real Audio Only * --------------- * v3 and v4/5 headers are parsed. * Doesn't work yet... */ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS #include #include #include #include #include #include /***************************************************************************** * Module descriptor *****************************************************************************/ static int Open ( vlc_object_t * ); static void Close ( vlc_object_t * ); vlc_module_begin () set_description( N_("Real demuxer" ) ) set_capability( "demux", 0 ) set_category( CAT_INPUT ) set_subcategory( SUBCAT_INPUT_DEMUX ) set_callbacks( Open, Close ) add_shortcut( "real", "rm" ) vlc_module_end () /***************************************************************************** * Local prototypes *****************************************************************************/ typedef struct { int i_id; es_format_t fmt; es_out_id_t *p_es; unsigned i_frame_size; int i_frame_num; unsigned i_frame_pos; int i_frame_slice; int i_frame_slice_count; block_t *p_frame; int i_subpacket_h; int i_subpacket_size; int i_coded_frame_size; int i_subpacket; int i_subpackets; block_t **p_subpackets; vlc_tick_t *p_subpackets_timecode; int i_out_subpacket; block_t *p_sipr_packet; int i_sipr_subpacket_count; vlc_tick_t i_last_dts; } real_track_t; typedef struct { uint32_t i_file_offset; uint32_t i_time_offset; uint32_t i_frame_index; } real_index_t; struct demux_sys_t { int64_t i_data_offset; int64_t i_data_size; uint32_t i_data_packets_count; uint32_t i_data_packets; int64_t i_data_offset_next; bool b_real_audio; int64_t i_our_duration; char* psz_title; char* psz_artist; char* psz_copyright; char* psz_description; int i_track; real_track_t **track; size_t i_buffer; uint8_t buffer[65536]; int64_t i_pcr; int64_t i_index_offset; bool b_seek; real_index_t *p_index; }; static const unsigned char i_subpacket_size_sipr[4] = { 29, 19, 37, 20 }; 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, vlc_tick_t i_dts, unsigned i_flags ); static void DemuxAudio( demux_t *, real_track_t *tk, vlc_tick_t i_pts, unsigned i_flags ); static void UpdatePcr( demux_t * ); static int ControlSeekByte( demux_t *, int64_t i_bytes ); static int ControlSeekTime( demux_t *, vlc_tick_t i_time ); static int HeaderRead( demux_t *p_demux ); static int CodecParse( demux_t *p_demux, int i_len, int i_num ); 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 ); static uint16_t R16( const uint8_t **pp_data, int *pi_data ); static uint32_t R32( const uint8_t **pp_data, int *pi_data ); static void SiprPacketReorder(uint8_t *buf, int sub_packet_h, int framesize); /***************************************************************************** * Open *****************************************************************************/ static int Open( vlc_object_t *p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys; const uint8_t *p_peek; bool b_real_audio = false; if( vlc_stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC; /* Real Audio */ if( !memcmp( p_peek, ".ra", 3 ) ) { msg_Err( p_demux, ".ra files unsupported" ); b_real_audio = true; } /* Real Media Format */ else if( memcmp( p_peek, ".RMF", 4 ) ) { return VLC_EGENERIC; } /* Fill p_demux field */ p_demux->pf_demux = Demux; p_demux->pf_control = Control; p_demux->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) ); if( !p_sys ) return VLC_ENOMEM; p_sys->i_data_offset = 0; p_sys->i_track = 0; p_sys->track = NULL; p_sys->i_pcr = VLC_TICK_INVALID; p_sys->b_seek = false; p_sys->b_real_audio = b_real_audio; /* Parse the headers */ /* Real Audio files */ if( b_real_audio ) { CodecParse( p_demux, 32, 0 ); /* At least 32 */ return VLC_EGENERIC; /* We don't know how to read correctly the data yet */ } /* RMF files */ else if( HeaderRead( p_demux ) ) { msg_Err( p_demux, "invalid header" ); Close( p_this ); return VLC_EGENERIC; } return VLC_SUCCESS; } /***************************************************************************** * Close *****************************************************************************/ static void Close( vlc_object_t *p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys = p_demux->p_sys; for( int i = 0; i < p_sys->i_track; i++ ) { real_track_t *tk = p_sys->track[i]; es_format_Clean( &tk->fmt ); if( tk->p_frame ) block_Release( tk->p_frame ); for( int j = 0; j < tk->i_subpackets; j++ ) { if( tk->p_subpackets[ j ] ) block_Release( tk->p_subpackets[ j ] ); } free( tk->p_subpackets ); free( tk->p_subpackets_timecode ); if( tk->p_sipr_packet ) block_Release( tk->p_sipr_packet ); free( tk ); } if( p_sys->i_track > 0 ) free( p_sys->track ); free( p_sys->psz_title ); free( p_sys->psz_artist ); free( p_sys->psz_copyright ); free( p_sys->psz_description ); free( p_sys->p_index ); free( p_sys ); } /***************************************************************************** * 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( vlc_stream_Read( p_demux->s, header, 18 ) < 18 ) return 0; if( memcmp( header, "DATA", 4 ) ) return 0; p_sys->i_data_offset = vlc_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( vlc_stream_Read( p_demux->s, header, 12 ) < 12 ) return 0; //const int i_version = GetWBE( &header[0] ); const size_t i_size = GetWBE( &header[2] ) - 12; const int i_id = GetWBE( &header[4] ); const vlc_tick_t i_pts = VLC_TICK_0 + VLC_TICK_FROM_MS(GetDWBE( &header[6] )); const int i_flags= header[11]; /* flags 0x02 -> keyframe */ p_sys->i_data_packets++; if( i_size > sizeof(p_sys->buffer) ) { msg_Err( p_demux, "Got a NUKK size to read. (Invalid format?)" ); return 1; } p_sys->i_buffer = vlc_stream_Read( p_demux->s, p_sys->buffer, i_size ); if( p_sys->i_buffer < i_size ) { /* Set Last PCR */ for( int i = 0; i < p_sys->i_track; i++ ) { vlc_tick_t i_pcr = VLC_TICK_INVALID; const real_track_t *tk = p_sys->track[i]; if( i_pcr < tk->i_last_dts ) i_pcr = tk->i_last_dts; if( p_sys->i_pcr != i_pcr ) es_out_SetPCR( p_demux->out, i_pcr ); } 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 */ UpdatePcr( p_demux ); 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_CAN_SEEK: { bool *b = va_arg( args, bool * ); if( stream_Size( p_demux->s ) == 0 ) *b = true; /* FIXME: kludge for Real-dialectal RTSP */ else if( p_sys->p_index == NULL ) *b = false; else if( vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &b ) ) *b = false; return VLC_SUCCESS; } case DEMUX_GET_POSITION: pf = 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 ) { if( p_sys->i_pcr > VLC_TICK_INVALID ) *pf = (double)p_sys->i_pcr / 1000.0 / p_sys->i_our_duration; else *pf = 0.0; return VLC_SUCCESS; } i64 = stream_Size( p_demux->s ); if( i64 > 0 ) *pf = (double)1.0*vlc_stream_Tell( p_demux->s ) / (double)i64; else *pf = 0.0; return VLC_SUCCESS; case DEMUX_GET_TIME: pi64 = va_arg( args, int64_t * ); if( p_sys->i_our_duration > 0 ) { *pi64 = p_sys->i_pcr > VLC_TICK_INVALID ? p_sys->i_pcr : 0; 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 * vlc_stream_Tell( p_demux->s ) / i64 ); return VLC_SUCCESS; } *pi64 = 0; return VLC_EGENERIC; case DEMUX_SET_POSITION: f = 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 = VLC_TICK_0 + INT64_C(1000) * ( p_sys->i_our_duration * f ); p_sys->b_seek = true; return vlc_stream_Seek( p_demux->s, p_sys->i_pcr - VLC_TICK_0 ); } return ControlSeekByte( p_demux, i64 ); case DEMUX_SET_TIME: if( !p_sys->p_index ) return VLC_EGENERIC; i64 = va_arg( args, int64_t ); return ControlSeekTime( p_demux, i64 ); case DEMUX_GET_LENGTH: pi64 = va_arg( args, int64_t * ); if( p_sys->i_our_duration <= 0 ) { *pi64 = 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 = 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 UpdatePcr( demux_t *p_demux ) { demux_sys_t *p_sys = p_demux->p_sys; vlc_tick_t pcr = VLC_TICK_INVALID; for( int i=0; ii_track; i++ ) { const real_track_t *tk = p_sys->track[i]; if( tk->i_last_dts <= VLC_TICK_INVALID ) continue; if( pcr <= VLC_TICK_INVALID || pcr > tk->i_last_dts ) pcr = tk->i_last_dts; } if( p_sys->i_pcr < pcr && pcr != VLC_TICK_INVALID ) { es_out_SetPCR( p_demux->out, pcr ); p_sys->i_pcr = pcr; } } static void CheckPcr( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_dts ) { if( i_dts > VLC_TICK_INVALID ) tk->i_last_dts = i_dts; UpdatePcr( p_demux ); } static void DemuxVideo( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_dts, unsigned i_flags ) { demux_sys_t *p_sys = p_demux->p_sys; const uint8_t *p_data = p_sys->buffer; int i_data = p_sys->i_buffer; while( i_data > 1 ) { uint8_t i_hdr = R8( &p_data, &i_data ); uint8_t i_type = i_hdr >> 6; uint8_t i_seq; int i_len; int i_pos; int i_frame_num; if( i_type == 1 ) { R8( &p_data, &i_data ); i_len = i_data; i_pos = 0; i_frame_num = -1; i_seq = 1; i_hdr &= ~0x3f; } else if( i_type == 3 ) { i_len = RLength( &p_data, &i_data ); i_pos = RLength( &p_data, &i_data ); i_frame_num = R8( &p_data, &i_data ); i_seq = 1; i_hdr &= ~0x3f; } else { assert( i_type == 0 || i_type == 2 ); i_seq = R8( &p_data, &i_data ); i_len = RLength( &p_data, &i_data ); i_pos = RLength( &p_data, &i_data ); i_frame_num = R8( &p_data, &i_data ); } if( (i_seq & 0x7f) == 1 || tk->i_frame_num != i_frame_num ) { tk->i_frame_slice = 0; tk->i_frame_slice_count = 2 * (i_hdr & 0x3f) + 1; tk->i_frame_pos = 2*4 * tk->i_frame_slice_count + 1; tk->i_frame_size = i_len + 2*4 * tk->i_frame_slice_count + 1; tk->i_frame_num = i_frame_num; if( tk->p_frame ) block_Release( tk->p_frame ); tk->p_frame = block_Alloc( tk->i_frame_size ); if( !tk->p_frame ) { tk->i_frame_size = 0; return; } tk->p_frame->i_dts = i_dts; tk->p_frame->i_pts = VLC_TICK_INVALID; if( i_flags & 0x02 ) tk->p_frame->i_flags |= BLOCK_FLAG_TYPE_I; i_dts = VLC_TICK_INVALID; } int i_frame_data; if( i_type == 3 ) { i_frame_data = i_len; } else { i_frame_data = i_data; if( i_type == 2 && i_frame_data > i_pos ) i_frame_data = i_pos; } if( i_frame_data > i_data ) break; /* */ tk->i_frame_slice++; if( tk->i_frame_slice > tk->i_frame_slice_count || !tk->p_frame ) break; /* */ SetDWLE( &tk->p_frame->p_buffer[2*4*(tk->i_frame_slice-1) + 1 + 0], 1 ); SetDWLE( &tk->p_frame->p_buffer[2*4*(tk->i_frame_slice-1) + 1 + 4], tk->i_frame_pos - (2*4 * tk->i_frame_slice_count + 1) ); if( tk->i_frame_pos + i_frame_data > tk->i_frame_size ) break; memcpy( &tk->p_frame->p_buffer[tk->i_frame_pos], p_data, i_frame_data ); RVoid( &p_data, &i_data, i_frame_data ); tk->i_frame_pos += i_frame_data; if( i_type != 0 || tk->i_frame_pos >= tk->i_frame_size ) { /* Fix the buffer once the real number of slice is known */ tk->p_frame->p_buffer[0] = tk->i_frame_slice - 1; tk->p_frame->i_buffer = tk->i_frame_pos - 2*4*( tk->i_frame_slice_count - tk->i_frame_slice ); memmove( &tk->p_frame->p_buffer[1+2*4*tk->i_frame_slice ], &tk->p_frame->p_buffer[1+2*4*tk->i_frame_slice_count], tk->i_frame_pos - (2*4*tk->i_frame_slice_count + 1) ); /* Send it */ CheckPcr( p_demux, tk, tk->p_frame->i_dts ); es_out_Send( p_demux->out, tk->p_es, tk->p_frame ); tk->i_frame_size = 0; tk->p_frame = NULL; } } } static void DemuxAudioMethod1( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_pts, unsigned int i_flags ) { demux_sys_t *p_sys = p_demux->p_sys; uint8_t *p_buf = p_sys->buffer; /* Sanity check */ if( (i_flags & 2) || p_sys->b_seek ) { tk->i_subpacket = 0; tk->i_out_subpacket = 0; p_sys->b_seek = false; } if( tk->fmt.i_codec == VLC_CODEC_COOK || tk->fmt.i_codec == VLC_CODEC_ATRAC3 ) { const int i_num = tk->i_frame_size / tk->i_subpacket_size; const int y = tk->i_subpacket / ( tk->i_frame_size / tk->i_subpacket_size ); for( int i = 0; i < i_num; i++ ) { int i_index = tk->i_subpacket_h * i + ((tk->i_subpacket_h + 1) / 2) * (y&1) + (y>>1); if( i_index >= tk->i_subpackets ) return; block_t *p_block = block_Alloc( tk->i_subpacket_size ); if( !p_block ) return; if( &p_buf[tk->i_subpacket_size] > &p_sys->buffer[p_sys->i_buffer] ) return; memcpy( p_block->p_buffer, p_buf, tk->i_subpacket_size ); p_block->i_dts = p_block->i_pts = VLC_TICK_INVALID; p_buf += tk->i_subpacket_size; if( tk->p_subpackets[i_index] != NULL ) { msg_Dbg(p_demux, "p_subpackets[ %d ] not null!", i_index ); block_Release( tk->p_subpackets[i_index] ); } tk->p_subpackets[i_index] = p_block; if( tk->i_subpacket == 0 ) tk->p_subpackets_timecode[0] = i_pts; tk->i_subpacket++; } } else { const int y = tk->i_subpacket / (tk->i_subpacket_h / 2); assert( tk->fmt.i_codec == VLC_CODEC_RA_288 ); for( int i = 0; i < tk->i_subpacket_h / 2; i++ ) { int i_index = (i * 2 * tk->i_frame_size / tk->i_coded_frame_size) + y; if( i_index >= tk->i_subpackets ) return; block_t *p_block = block_Alloc( tk->i_coded_frame_size); if( !p_block ) return; if( &p_buf[tk->i_coded_frame_size] > &p_sys->buffer[p_sys->i_buffer] ) return; memcpy( p_block->p_buffer, p_buf, tk->i_coded_frame_size ); p_block->i_dts = p_block->i_pts = i_index == 0 ? i_pts : VLC_TICK_INVALID; p_buf += tk->i_coded_frame_size; if( tk->p_subpackets[i_index] != NULL ) { msg_Dbg(p_demux, "p_subpackets[ %d ] not null!", i_index ); block_Release( tk->p_subpackets[i_index] ); } tk->p_subpackets[i_index] = p_block; tk->i_subpacket++; } } while( tk->i_out_subpacket != tk->i_subpackets && tk->p_subpackets[tk->i_out_subpacket] ) { block_t *p_block = tk->p_subpackets[tk->i_out_subpacket]; tk->p_subpackets[tk->i_out_subpacket] = NULL; if( tk->p_subpackets_timecode[tk->i_out_subpacket] ) { p_block->i_dts = p_block->i_pts = tk->p_subpackets_timecode[tk->i_out_subpacket]; tk->p_subpackets_timecode[tk->i_out_subpacket] = 0; } tk->i_out_subpacket++; CheckPcr( p_demux, tk, p_block->i_pts ); es_out_Send( p_demux->out, tk->p_es, p_block ); } if( tk->i_subpacket == tk->i_subpackets && tk->i_out_subpacket != tk->i_subpackets ) { msg_Warn( p_demux, "i_subpacket != i_out_subpacket, " "this shouldn't happen" ); } if( tk->i_subpacket == tk->i_subpackets ) { tk->i_subpacket = 0; tk->i_out_subpacket = 0; } } static void DemuxAudioMethod2( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_pts ) { demux_sys_t *p_sys = p_demux->p_sys; if( p_sys->i_buffer < 2 ) return; unsigned i_sub = (p_sys->buffer[1] >> 4)&0x0f; if( p_sys->i_buffer < 2+2*i_sub ) return; uint8_t *p_sub = &p_sys->buffer[2+2*i_sub]; for( unsigned i = 0; i < i_sub; i++ ) { const int i_sub_size = GetWBE( &p_sys->buffer[2+i*2] ); block_t *p_block = block_Alloc( i_sub_size ); if( !p_block ) break; if( &p_sub[i_sub_size] > &p_sys->buffer[p_sys->i_buffer] ) break; memcpy( p_block->p_buffer, p_sub, i_sub_size ); p_sub += i_sub_size; p_block->i_dts = p_block->i_pts = i == 0 ? i_pts : VLC_TICK_INVALID; CheckPcr( p_demux, tk, p_block->i_pts ); es_out_Send( p_demux->out, tk->p_es, p_block ); } } static void DemuxAudioMethod3( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_pts ) { demux_sys_t *p_sys = p_demux->p_sys; if( p_sys->i_buffer <= 0 ) return; block_t *p_block = block_Alloc( p_sys->i_buffer ); if( !p_block ) return; if( tk->fmt.i_codec == VLC_CODEC_A52 ) { uint8_t *p_src = p_sys->buffer; uint8_t *p_dst = p_block->p_buffer; /* byte swap data */ while( p_dst < &p_block->p_buffer[p_sys->i_buffer - 1]) { *p_dst++ = p_src[1]; *p_dst++ = p_src[0]; p_src += 2; } } else { memcpy( p_block->p_buffer, p_sys->buffer, p_sys->i_buffer ); } p_block->i_dts = p_block->i_pts = i_pts; CheckPcr( p_demux, tk, p_block->i_pts ); es_out_Send( p_demux->out, tk->p_es, p_block ); } // Sipr packet re-ordering code and index table borrowed from // the MPlayer Realmedia demuxer. static const uint8_t sipr_swap_index_table[38][2] = { { 0, 63 }, { 1, 22 }, { 2, 44 }, { 3, 90 }, { 5, 81 }, { 7, 31 }, { 8, 86 }, { 9, 58 }, { 10, 36 }, { 12, 68 }, { 13, 39 }, { 14, 73 }, { 15, 53 }, { 16, 69 }, { 17, 57 }, { 19, 88 }, { 20, 34 }, { 21, 71 }, { 24, 46 }, { 25, 94 }, { 26, 54 }, { 28, 75 }, { 29, 50 }, { 32, 70 }, { 33, 92 }, { 35, 74 }, { 38, 85 }, { 40, 56 }, { 42, 87 }, { 43, 65 }, { 45, 59 }, { 48, 79 }, { 49, 93 }, { 51, 89 }, { 55, 95 }, { 61, 76 }, { 67, 83 }, { 77, 80 } }; static void SiprPacketReorder(uint8_t *buf, int sub_packet_h, int framesize) { int n, bs = sub_packet_h * framesize * 2 / 96; // nibbles per subpacket for (n = 0; n < 38; n++) { int j; int i = bs * sipr_swap_index_table[n][0]; int o = bs * sipr_swap_index_table[n][1]; /* swap 4 bit-nibbles of block 'i' with 'o' */ for (j = 0; j < bs; j++, i++, o++) { int x = (buf[i >> 1] >> (4 * (i & 1))) & 0xF, y = (buf[o >> 1] >> (4 * (o & 1))) & 0xF; buf[o >> 1] = (x << (4 * (o & 1))) | (buf[o >> 1] & (0xF << (4 * !(o & 1)))); buf[i >> 1] = (y << (4 * (i & 1))) | (buf[i >> 1] & (0xF << (4 * !(i & 1)))); } } } static void DemuxAudioSipr( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_pts ) { demux_sys_t *p_sys = p_demux->p_sys; block_t *p_block = tk->p_sipr_packet; if( p_sys->i_buffer < tk->i_frame_size || tk->i_sipr_subpacket_count >= tk->i_subpacket_h ) return; if( !p_block ) { p_block = block_Alloc( tk->i_frame_size * tk->i_subpacket_h ); if( !p_block ) return; tk->p_sipr_packet = p_block; } memcpy( p_block->p_buffer + tk->i_sipr_subpacket_count * tk->i_frame_size, p_sys->buffer, tk->i_frame_size ); if (!tk->i_sipr_subpacket_count) { p_block->i_dts = p_block->i_pts = i_pts; } if( ++tk->i_sipr_subpacket_count < tk->i_subpacket_h ) return; SiprPacketReorder(p_block->p_buffer, tk->i_subpacket_h, tk->i_frame_size); CheckPcr( p_demux, tk, p_block->i_pts ); es_out_Send( p_demux->out, tk->p_es, p_block ); tk->i_sipr_subpacket_count = 0; tk->p_sipr_packet = NULL; } static void DemuxAudio( demux_t *p_demux, real_track_t *tk, vlc_tick_t i_pts, unsigned i_flags ) { switch( tk->fmt.i_codec ) { case VLC_CODEC_COOK: case VLC_CODEC_ATRAC3: case VLC_CODEC_RA_288: DemuxAudioMethod1( p_demux, tk, i_pts, i_flags ); break; case VLC_CODEC_MP4A: DemuxAudioMethod2( p_demux, tk, i_pts ); break; case VLC_CODEC_SIPR: DemuxAudioSipr( p_demux, tk, i_pts ); break; default: DemuxAudioMethod3( p_demux, tk, i_pts ); break; } } /***************************************************************************** * Helpers: seek/control *****************************************************************************/ static int ControlGoToIndex( demux_t *p_demux, real_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 vlc_stream_Seek( p_demux->s, p_index->i_file_offset ); } static int ControlSeekTime( demux_t *p_demux, vlc_tick_t i_time ) { demux_sys_t *p_sys = p_demux->p_sys; real_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; real_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 ); } /***************************************************************************** * Helpers: header reading *****************************************************************************/ /** * 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( vlc_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 = malloc( i_length + 1 ); if( unlikely(psz_string == NULL) ) return NULL; if( vlc_stream_Read( s, psz_string, i_length ) < i_length ) { free( psz_string ); return NULL; } psz_string[i_length] = '\0'; EnsureUTF8( psz_string ); return psz_string; } /** * 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 parses(skip) the .RMF identification chunk. */ static int HeaderRMF( demux_t *p_demux ) { uint8_t p_buffer[8]; if( vlc_stream_Read( p_demux->s, p_buffer, 8 ) < 8 ) return VLC_EGENERIC; msg_Dbg( p_demux, " - file version=0x%x num headers=%d", 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; uint8_t p_buffer[40]; int i_flags; if( vlc_stream_Read( p_demux->s, p_buffer, 40 ) < 40 ) return VLC_EGENERIC; msg_Dbg( p_demux, " - max bitrate=%d avg bitrate=%d", GetDWBE(&p_buffer[0]), GetDWBE(&p_buffer[4]) ); msg_Dbg( p_demux, " - max packet size=%d avg bitrate=%d", GetDWBE(&p_buffer[8]), GetDWBE(&p_buffer[12]) ); msg_Dbg( p_demux, " - packets count=%d", GetDWBE(&p_buffer[16]) ); msg_Dbg( p_demux, " - duration=%d ms", GetDWBE(&p_buffer[20]) ); msg_Dbg( p_demux, " - preroll=%d ms", GetDWBE(&p_buffer[24]) ); msg_Dbg( p_demux, " - index offset=%d", GetDWBE(&p_buffer[28]) ); msg_Dbg( p_demux, " - data offset=%d", GetDWBE(&p_buffer[32]) ); msg_Dbg( p_demux, " - num streams=%d", GetWBE(&p_buffer[36]) ); /* set the duration for export in control */ p_sys->i_our_duration = GetDWBE(&p_buffer[20]); p_sys->i_index_offset = GetDWBE(&p_buffer[28]); i_flags = GetWBE(&p_buffer[38]); msg_Dbg( p_demux, " - flags=0x%x %s%s%s", i_flags, i_flags&0x0001 ? "PN_SAVE_ENABLED " : "", i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "", i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" ); 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; /* */ p_sys->psz_title = StreamReadString2( p_demux->s ); if( p_sys->psz_title ) msg_Dbg( p_demux, " - title=`%s'", p_sys->psz_title ); /* */ p_sys->psz_artist = StreamReadString2( p_demux->s ); if( p_sys->psz_artist ) msg_Dbg( p_demux, " - artist=`%s'", p_sys->psz_artist ); /* */ p_sys->psz_copyright = StreamReadString2( p_demux->s ); if( p_sys->psz_copyright ) msg_Dbg( p_demux, " - copyright=`%s'", p_sys->psz_copyright ); /* */ p_sys->psz_description = StreamReadString2( p_demux->s ); if( p_sys->psz_description ) msg_Dbg( p_demux, " - comment=`%s'", p_sys->psz_description ); return VLC_SUCCESS; } /** * This function parses the MDPR (Media properties) chunk. */ static int HeaderMDPR( demux_t *p_demux ) { uint8_t p_buffer[30]; if( vlc_stream_Read( p_demux->s, p_buffer, 30 ) < 30 ) return VLC_EGENERIC; const int i_num = GetWBE( &p_buffer[0] ); msg_Dbg( p_demux, " - id=0x%x", i_num ); msg_Dbg( p_demux, " - max bitrate=%d avg bitrate=%d", GetDWBE(&p_buffer[2]), GetDWBE(&p_buffer[6]) ); msg_Dbg( p_demux, " - max packet size=%d avg packet size=%d", GetDWBE(&p_buffer[10]), GetDWBE(&p_buffer[14]) ); msg_Dbg( p_demux, " - start time=%d", GetDWBE(&p_buffer[18]) ); msg_Dbg( p_demux, " - preroll=%d", GetDWBE(&p_buffer[22]) ); msg_Dbg( p_demux, " - duration=%d", GetDWBE(&p_buffer[26]) ); /* */ const uint8_t *p_peek; int i_peek_org = vlc_stream_Peek( p_demux->s, &p_peek, 2 * 256 ); int i_peek = i_peek_org; if( i_peek <= 0 ) return VLC_EGENERIC; char *psz_name = MemoryReadString1( &p_peek, &i_peek ); if( psz_name ) { msg_Dbg( p_demux, " - name=`%s'", psz_name ); free( psz_name ); } char *psz_mime = MemoryReadString1( &p_peek, &i_peek ); if( psz_mime ) { msg_Dbg( p_demux, " - mime=`%s'", psz_mime ); free( psz_mime ); } const int i_skip = i_peek_org - i_peek; if( i_skip > 0 && vlc_stream_Read( p_demux->s, NULL, i_skip ) < i_skip ) return VLC_EGENERIC; /* */ if( vlc_stream_Read( p_demux->s, p_buffer, 4 ) < 4 ) return VLC_EGENERIC; const uint32_t i_size = GetDWBE( p_buffer ); if( i_size > 0 ) { CodecParse( p_demux, i_size, i_num ); unsigned size = vlc_stream_Read( p_demux->s, NULL, i_size ); if( size < i_size ) 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; uint8_t p_buffer[8]; if( vlc_stream_Read( p_demux->s, p_buffer, 8 ) < 8 ) return VLC_EGENERIC; p_sys->i_data_offset = vlc_stream_Tell( p_demux->s ) - 10; p_sys->i_data_size = i_size; p_sys->i_data_packets_count = GetDWBE( p_buffer ); p_sys->i_data_packets = 0; p_sys->i_data_offset_next = GetDWBE( &p_buffer[4] ); msg_Dbg( p_demux, " - packets count=%d next=%u", p_sys->i_data_packets_count, (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; if( vlc_stream_Seek( p_demux->s, p_sys->i_index_offset ) || vlc_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( vlc_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] ); #if 0 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 ); #endif } } /** * 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; for( ;; ) { const int64_t i_stream_position = vlc_stream_Tell( p_demux->s ); uint8_t header[100]; /* FIXME */ /* Read the header */ if( vlc_stream_Read( p_demux->s, header, 10 ) < 10 ) return VLC_EGENERIC; const uint32_t i_id = VLC_FOURCC( header[0], header[1], header[2], header[3] ); const uint32_t i_size = GetDWBE( &header[4] ); const int i_version = GetWBE( &header[8] ); msg_Dbg( p_demux, "object %4.4s size=%d version=%d", (char*)&i_id, i_size, i_version ); /* */ if( i_size < 10 && i_id != VLC_FOURCC('D','A','T','A') ) { msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id ); return VLC_EGENERIC; } int i_ret; switch( i_id ) { case VLC_FOURCC('.','R','M','F'): i_ret = HeaderRMF( p_demux ); break; case VLC_FOURCC('P','R','O','P'): i_ret = HeaderPROP( p_demux ); break; case VLC_FOURCC('C','O','N','T'): i_ret = HeaderCONT( p_demux ); break; case VLC_FOURCC('M','D','P','R'): i_ret = HeaderMDPR( p_demux ); break; case VLC_FOURCC('D','A','T','A'): i_ret = HeaderDATA( p_demux, i_size ); break; default: /* unknown header */ msg_Dbg( p_demux, "unknown chunk" ); i_ret = VLC_SUCCESS; break; } if( i_ret ) return i_ret; if( i_id == VLC_FOURCC('D','A','T','A') ) /* In this case, parsing is finished */ break; /* Skip unread data */ const int64_t i_stream_current = vlc_stream_Tell( p_demux->s ); const int64_t i_stream_skip = (i_stream_position + i_size) - i_stream_current; if( i_stream_skip > 0 ) { if( vlc_stream_Read( p_demux->s, NULL, i_stream_skip ) != i_stream_skip ) return VLC_EGENERIC; } else if( i_stream_skip < 0 ) { return VLC_EGENERIC; } } /* read index if possible */ if( p_sys->i_index_offset > 0 ) { const int64_t i_position = vlc_stream_Tell( p_demux->s ); HeaderINDX( p_demux ); if( vlc_stream_Seek( p_demux->s, i_position ) ) return VLC_EGENERIC; } return VLC_SUCCESS; } static void CodecMetaRead( demux_t *p_demux, const uint8_t **pp_data, int *pi_data ) { demux_sys_t *p_sys = p_demux->p_sys; /* Title */ p_sys->psz_title = MemoryReadString1( pp_data, pi_data ); if( p_sys->psz_title ) msg_Dbg( p_demux, " - title=`%s'", p_sys->psz_title ); /* Authors */ p_sys->psz_artist = MemoryReadString1( pp_data, pi_data ); if( p_sys->psz_artist ) msg_Dbg( p_demux, " - artist=`%s'", p_sys->psz_artist ); /* Copyright */ p_sys->psz_copyright = MemoryReadString1( pp_data, pi_data ); if( p_sys->psz_copyright ) msg_Dbg( p_demux, " - copyright=`%s'", p_sys->psz_copyright ); /* Comment */ p_sys->psz_description = MemoryReadString1( pp_data, pi_data ); if( p_sys->psz_description ) msg_Dbg( p_demux, " - Comment=`%s'", p_sys->psz_description ); } static int CodecVideoParse( demux_t *p_demux, int i_tk_id, const uint8_t *p_data, int i_data ) { demux_sys_t *p_sys = p_demux->p_sys; if( i_data < 34 ) return VLC_EGENERIC; /* */ es_format_t fmt; es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_data[8], p_data[9], p_data[10], p_data[11] ) ); fmt.video.i_width = GetWBE( &p_data[12] ); fmt.video.i_height= GetWBE( &p_data[14] ); fmt.video.i_visible_width = fmt.video.i_width; fmt.video.i_visible_height = fmt.video.i_height; fmt.video.i_frame_rate = (GetWBE( &p_data[22] ) << 16) | GetWBE( &p_data[24] ); fmt.video.i_frame_rate_base = 1 << 16; fmt.i_extra = i_data - 26; fmt.p_extra = malloc( fmt.i_extra ); if( !fmt.p_extra ) return VLC_ENOMEM; memcpy( fmt.p_extra, &p_data[26], fmt.i_extra ); //msg_Dbg( p_demux, " - video 0x%08x 0x%08x", dw0, dw1 ); /* */ switch( GetDWBE( &p_data[30] ) ) { case 0x10003000: case 0x10003001: fmt.i_codec = VLC_CODEC_RV13; break; case 0x20001000: case 0x20100001: case 0x20200002: case 0x20201002: fmt.i_codec = VLC_CODEC_RV20; break; case 0x30202002: fmt.i_codec = VLC_CODEC_RV30; break; case 0x40000000: fmt.i_codec = VLC_CODEC_RV40; break; } msg_Dbg( p_demux, " - video %4.4s %dx%d - %8.8x", (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height, GetDWBE( &p_data[30] ) ); real_track_t *tk = malloc( sizeof( *tk ) ); if( !tk ) { es_format_Clean( &fmt ); return VLC_ENOMEM; } tk->i_out_subpacket = 0; tk->i_subpacket = 0; tk->i_subpackets = 0; tk->p_subpackets = NULL; tk->p_subpackets_timecode = NULL; tk->i_id = i_tk_id; tk->fmt = fmt; tk->i_frame_num = -1; tk->i_frame_size = 0; tk->p_frame = NULL; tk->i_last_dts = 0; tk->p_sipr_packet = NULL; tk->p_es = es_out_Add( p_demux->out, &fmt ); TAB_APPEND( p_sys->i_track, p_sys->track, tk ); return VLC_SUCCESS; } static int CodecAudioParse( demux_t *p_demux, int i_tk_id, const uint8_t *p_data, int i_data ) { demux_sys_t *p_sys = p_demux->p_sys; es_format_t fmt; if( i_data < 6 ) return VLC_EGENERIC; int i_flavor = 0; int i_coded_frame_size = 0; int i_subpacket_h = 0; int i_frame_size = 0; int i_subpacket_size = 0; char p_genr[4] = {0,0,0,0}; int i_version = GetWBE( &p_data[4] ); int i_extra_codec = 0; msg_Dbg( p_demux, " - audio version=%d", i_version ); es_format_Init( &fmt, AUDIO_ES, 0 ); RVoid( &p_data, &i_data, 6 ); /* 4 + version */ if( i_version == 3 ) /* RMF version 3 or .ra version 3 */ { RVoid( &p_data, &i_data, 2 + 10 + 4 ); /* Meta Datas */ CodecMetaRead( p_demux, &p_data, &i_data ); RVoid( &p_data, &i_data, 1 + 1 ); if( i_data >= 4 ) memcpy( &fmt.i_codec, p_data, 4 ); RVoid( &p_data, &i_data, 4 ); fmt.audio.i_channels = 1; /* This is always the case in rm3 */ fmt.audio.i_rate = 8000; msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz", (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate ); } else /* RMF version 4/5 or .ra version 4 */ { RVoid( &p_data, &i_data, 2 + 4 + 4 + 2 + 4 ); i_flavor = R16( &p_data, &i_data ); i_coded_frame_size = R32( &p_data, &i_data ); RVoid( &p_data, &i_data, 4 + 4 + 4 ); i_subpacket_h = R16( &p_data, &i_data ); i_frame_size = R16( &p_data, &i_data ); i_subpacket_size = R16( &p_data, &i_data ); if( !i_frame_size || !i_coded_frame_size ) { es_format_Clean( &fmt ); return VLC_EGENERIC; } RVoid( &p_data, &i_data, 2 + (i_version == 5 ? 6 : 0 ) ); fmt.audio.i_rate = R16( &p_data, &i_data ); RVoid( &p_data, &i_data, 2 ); fmt.audio.i_bitspersample = R16( &p_data, &i_data ); fmt.audio.i_channels = R16( &p_data, &i_data ); fmt.audio.i_blockalign = i_frame_size; if( i_version == 5 ) { if( i_data >= 8 ) { memcpy( p_genr, &p_data[0], 4 ); memcpy( &fmt.i_codec, &p_data[4], 4 ); } RVoid( &p_data, &i_data, 8 ); } else /* version 4 */ { if( i_data > 0 ) RVoid( &p_data, &i_data, 1 + *p_data ); if( i_data >= 1 + 4 ) memcpy( &fmt.i_codec, &p_data[1], 4 ); if( i_data > 0 ) RVoid( &p_data, &i_data, 1 + *p_data ); } msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz", (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate ); RVoid( &p_data, &i_data, 3 ); if( p_sys->b_real_audio ) { CodecMetaRead( p_demux, &p_data, &i_data ); } else { if( i_version == 5 ) RVoid( &p_data, &i_data, 1 ); i_extra_codec = R32( &p_data, &i_data ); } } switch( fmt.i_codec ) { case VLC_FOURCC('l','p','c','J'): case VLC_FOURCC('1','4','_','4'): fmt.i_codec = VLC_CODEC_RA_144; fmt.audio.i_blockalign = 0x14 ; break; case VLC_FOURCC('2','8','_','8'): if( i_coded_frame_size <= 0 ) { es_format_Clean( &fmt ); return VLC_EGENERIC; } fmt.i_codec = VLC_CODEC_RA_288; fmt.audio.i_blockalign = i_coded_frame_size; break; case VLC_FOURCC( 'a','5','2',' ' ): case VLC_FOURCC( 'd','n','e','t' ): fmt.i_codec = VLC_CODEC_A52; break; case VLC_FOURCC( 'r','a','a','c' ): case VLC_FOURCC( 'r','a','c','p' ): fmt.i_codec = VLC_CODEC_MP4A; if( i_extra_codec > 0 ) { i_extra_codec--; RVoid( &p_data, &i_data, 1 ); } if( i_extra_codec > 0 ) { fmt.p_extra = malloc( i_extra_codec ); if( !fmt.p_extra || i_extra_codec > i_data ) { free( fmt.p_extra ); return VLC_ENOMEM; } fmt.i_extra = i_extra_codec; memcpy( fmt.p_extra, p_data, fmt.i_extra ); } break; case VLC_CODEC_SIPR: fmt.i_codec = VLC_CODEC_SIPR; if( i_flavor > 3 ) { msg_Dbg( p_demux, " - unsupported sipr flavorc=%i", i_flavor ); es_format_Clean( &fmt ); return VLC_EGENERIC; } i_subpacket_size = i_subpacket_size_sipr[i_flavor]; // The libavcodec sipr decoder requires stream bitrate // to be set during initialization so that the correct mode // can be selected. fmt.i_bitrate = fmt.audio.i_rate; msg_Dbg( p_demux, " - sipr flavor=%i", i_flavor ); /* fall through */ case VLC_CODEC_COOK: case VLC_CODEC_ATRAC3: if( i_subpacket_size <= 0 || i_frame_size / i_subpacket_size <= 0 ) { es_format_Clean( &fmt ); return VLC_EGENERIC; } if( !memcmp( p_genr, "genr", 4 ) ) fmt.audio.i_blockalign = i_subpacket_size; else fmt.audio.i_blockalign = i_coded_frame_size; if( i_extra_codec > 0 ) { fmt.p_extra = malloc( i_extra_codec ); if( !fmt.p_extra || i_extra_codec > i_data ) { free( fmt.p_extra ); return VLC_ENOMEM; } fmt.i_extra = i_extra_codec; memcpy( fmt.p_extra, p_data, fmt.i_extra ); } break; case VLC_FOURCC('r','a','l','f'): default: msg_Dbg( p_demux, " - unknown audio codec=%4.4s", (char*)&fmt.i_codec ); es_format_Clean( &fmt ); return VLC_EGENERIC; } msg_Dbg( p_demux, " - extra data=%d", fmt.i_extra ); /* */ real_track_t *tk = malloc( sizeof( *tk ) ); if( !tk ) { es_format_Clean( &fmt ); return VLC_ENOMEM; } tk->i_id = i_tk_id; tk->fmt = fmt; tk->i_frame_size = 0; tk->p_frame = NULL; tk->i_subpacket_h = i_subpacket_h; tk->i_subpacket_size = i_subpacket_size; tk->i_coded_frame_size = i_coded_frame_size; tk->i_frame_size = i_frame_size; tk->i_out_subpacket = 0; tk->i_subpacket = 0; tk->i_subpackets = 0; tk->p_subpackets = NULL; tk->p_subpackets_timecode = NULL; tk->p_sipr_packet = NULL; tk->i_sipr_subpacket_count = 0; if( fmt.i_codec == VLC_CODEC_COOK || fmt.i_codec == VLC_CODEC_ATRAC3 ) { tk->i_subpackets = i_subpacket_h * i_frame_size / tk->i_subpacket_size; tk->p_subpackets = xcalloc( tk->i_subpackets, sizeof(block_t *) ); tk->p_subpackets_timecode = xcalloc( tk->i_subpackets , sizeof( int64_t ) ); } else if( fmt.i_codec == VLC_CODEC_RA_288 ) { tk->i_subpackets = i_subpacket_h * i_frame_size / tk->i_coded_frame_size; tk->p_subpackets = xcalloc( tk->i_subpackets, sizeof(block_t *) ); tk->p_subpackets_timecode = xcalloc( tk->i_subpackets , sizeof( int64_t ) ); } /* Check if the calloc went correctly */ if( tk->i_subpacket > 0 && ( !tk->p_subpackets || !tk->p_subpackets_timecode ) ) { free( tk->p_subpackets_timecode ); free( tk->p_subpackets ); free( tk ); msg_Err( p_demux, "Can't alloc subpacket" ); return VLC_EGENERIC; } tk->i_last_dts = 0; tk->p_es = es_out_Add( p_demux->out, &fmt ); TAB_APPEND( p_sys->i_track, p_sys->track, tk ); return VLC_SUCCESS; } static int CodecParse( demux_t *p_demux, int i_len, int i_num ) { const uint8_t *p_peek; msg_Dbg( p_demux, " - specific data len=%d", i_len ); if( vlc_stream_Peek( p_demux->s, &p_peek, i_len ) < i_len ) return VLC_EGENERIC; if( i_len >= 8 && !memcmp( &p_peek[4], "VIDO", 4 ) ) { return CodecVideoParse( p_demux, i_num, p_peek, i_len ); } else if( i_len >= 4 && !memcmp( &p_peek[0], ".ra\xfd", 4 ) ) { return CodecAudioParse( p_demux, i_num, p_peek, i_len ); } return VLC_SUCCESS; } /***************************************************************************** * Helpers: memory buffer fct. *****************************************************************************/ static void RVoid( const uint8_t **pp_data, int *pi_data, int i_size ) { if( i_size > *pi_data ) i_size = *pi_data; *pp_data += i_size; *pi_data -= i_size; } #define RX(name, type, size, code ) \ static type name( const uint8_t **pp_data, int *pi_data ) { \ if( *pi_data < (size) ) \ return 0; \ type v = code; \ RVoid( pp_data, pi_data, size ); \ return v; \ } RX(R8, uint8_t, 1, **pp_data ) RX(R16, uint16_t, 2, GetWBE( *pp_data ) ) RX(R32, uint32_t, 4, GetDWBE( *pp_data ) ) static int RLength( const uint8_t **pp_data, int *pi_data ) { const int v0 = R16( pp_data, pi_data ) & 0x7FFF; if( v0 >= 0x4000 ) return v0 - 0x4000; return (v0 << 16) | R16( pp_data, pi_data ); }