From: Rémi Denis-Courmont Date: Tue, 8 Mar 2005 13:53:36 +0000 (+0000) Subject: Creative Voice File demux X-Git-Tag: 0.8.2~905 X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=64d9b6957bef2dd5907ab89fce125f61e4c35ab9;p=vlc Creative Voice File demux --- diff --git a/AUTHORS b/AUTHORS index bf04687fc7..5ba1faf73e 100644 --- a/AUTHORS +++ b/AUTHORS @@ -338,5 +338,6 @@ N: R E: rem@videolan.org C: courmisch D: SSL/TLS support (core, HTTP server, HTTP input) +D: VOC files demultiplexer S: France diff --git a/modules/demux/Modules.am b/modules/demux/Modules.am index edd11c3146..6dc3fc7a9f 100644 --- a/modules/demux/Modules.am +++ b/modules/demux/Modules.am @@ -21,4 +21,5 @@ SOURCES_sgimb = sgimb.c SOURCES_mjpeg = mjpeg.c SOURCES_subtitle = subtitle.c SOURCES_vobsub = vobsub.c +SOURCES_voc = voc.c SOURCES_xa = xa.c diff --git a/modules/demux/voc.c b/modules/demux/voc.c new file mode 100644 index 0000000000..b1ec51d32d --- /dev/null +++ b/modules/demux/voc.c @@ -0,0 +1,302 @@ +/***************************************************************************** + * voc.c : Creative Voice File (.VOC) demux module for vlc + ***************************************************************************** + * Copyright (C) 2005 VideoLAN + * $Id: xa.c 10182 2005-03-07 15:04:53Z courmisch $ + * + * Authors: Remi Denis-Courmont + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + *****************************************************************************/ + +/***************************************************************************** + * Preamble + *****************************************************************************/ +#include /* malloc(), free() */ + +#include +#include +#include + +#include + +/***************************************************************************** + * Module descriptor + *****************************************************************************/ +static int Open ( vlc_object_t * ); +static void Close( vlc_object_t * ); + +vlc_module_begin(); + set_description( _("VOC demuxer") ); + set_category( CAT_INPUT ); + set_subcategory( SUBCAT_INPUT_DEMUX ); + set_capability( "demux2", 10 ); + set_callbacks( Open, Close ); +vlc_module_end(); + +/***************************************************************************** + * Local prototypes + *****************************************************************************/ +static int Demux ( demux_t * ); +static int Control( demux_t *, int i_query, va_list args ); + +struct demux_sys_t +{ + es_format_t fmt; + es_out_id_t *p_es; + +#if 0 + int64_t i_data_offset; + unsigned int i_data_size; +#endif + + int32_t i_block_size; + + date_t pts; +}; + +static const char ct_header[] = "Creative Voice File\x1a"; + +/***************************************************************************** + * Open: check file and initializes structures + *****************************************************************************/ +static int Open( vlc_object_t * p_this ) +{ + demux_t *p_demux = (demux_t*)p_this; + demux_sys_t *p_sys; + uint8_t *p_buf, buf[8]; + uint16_t i_data_offset, i_version; + + if( stream_Peek( p_demux->s, &p_buf, 26 ) < 26 ) + return VLC_EGENERIC; + + if( memcmp( p_buf, ct_header, 20 ) ) + return VLC_EGENERIC; + p_buf += 20; + + i_data_offset = GetWLE( p_buf ); + if ( i_data_offset < 26 /* not enough room for full VOC header */ ) + return VLC_EGENERIC; + p_buf += 2; + + i_version = GetWLE( p_buf ); + if( ( i_version != 0x10A ) && ( i_version != 0x114 ) ) + return VLC_EGENERIC; /* unknown VOC version */ + p_buf += 2; + + if( GetWLE( p_buf ) != (uint16_t)(0x1234 + ~i_version) ) + return VLC_EGENERIC; + + /* We have a valid VOC header */ + msg_Dbg( p_demux, "CT Voice file v%d.%d", i_version >> 8, + i_version & 0xff ); + + /* skip VOC header */ + if( stream_Read( p_demux->s, NULL, i_data_offset ) < i_data_offset ) + return VLC_EGENERIC; + + /* read first block header */ + /* FIXME: we only support one-block files at the moment */ + if( stream_Read( p_demux->s, buf, 4 ) < 4 ) + return VLC_EGENERIC; + + p_demux->pf_demux = Demux; + p_demux->pf_control = Control; + p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) ); + + p_sys->i_block_size = GetDWLE( buf ) >> 8; + msg_Dbg( p_demux, "block size: %u bytes", p_sys->i_block_size ); + + es_format_Init( &p_sys->fmt, AUDIO_ES, 0 ); + + switch( *buf ) + { + case 1: + if( p_sys->i_block_size < 2 ) + goto error; + p_sys->i_block_size -= 2; + + if( stream_Read( p_demux->s, buf, 2 ) < 2 ) + goto error; + + p_sys->fmt.audio.i_rate = 1000000L / (256L - buf[0]); + if( buf[1] ) + { + msg_Err( p_demux, "Unsupported compression" ); + goto error; + } + + p_sys->fmt.i_codec = VLC_FOURCC('u','8',' ',' '); + p_sys->fmt.audio.i_bytes_per_frame = 1; + p_sys->fmt.audio.i_frame_length = 1; + p_sys->fmt.audio.i_channels = 1; + p_sys->fmt.audio.i_blockalign = 1; + p_sys->fmt.audio.i_bitspersample = 8; + p_sys->fmt.i_bitrate = p_sys->fmt.audio.i_rate * 8; + break; + + case 9: + if( p_sys->i_block_size < 12 ) + goto error; + p_sys->i_block_size -= 12; + + if( ( stream_Read( p_demux->s, buf, 8 ) < 8 ) + || ( stream_Read( p_demux->s, NULL, 4 ) < 4 ) ) + goto error; + + p_sys->fmt.audio.i_rate = GetDWLE( buf ); + p_sys->fmt.audio.i_bitspersample = buf[4]; + p_sys->fmt.audio.i_channels = buf[5]; + + switch( GetWLE( &buf[6] ) ) /* format */ + { + case 0x0000: /* PCM */ + switch( p_sys->fmt.audio.i_bitspersample ) + { + case 8: + p_sys->fmt.i_codec = VLC_FOURCC('u','8',' ',' '); + break; + + case 16: + p_sys->fmt.i_codec = VLC_FOURCC('u','1','6','l'); + break; + + default: + msg_Err( p_demux, "Unsupported bit res.: %u bits", + p_sys->fmt.audio.i_bitspersample ); + return VLC_EGENERIC; + } + break; + + case 0x0004: /* signed */ + switch( p_sys->fmt.audio.i_bitspersample ) + { + case 8: + p_sys->fmt.i_codec = VLC_FOURCC('s','8',' ',' '); + break; + + case 16: + p_sys->fmt.i_codec = VLC_FOURCC('s','1','6','l'); + break; + + default: + msg_Err( p_demux, "Unsupported bit res.: %u bits", + p_sys->fmt.audio.i_bitspersample ); + return VLC_EGENERIC; + } + break; + + default: + msg_Err( p_demux, "Unsupported compression" ); + goto error; + } + + p_sys->fmt.audio.i_bytes_per_frame = p_sys->fmt.audio.i_channels + * (p_sys->fmt.audio.i_bitspersample / 8); + p_sys->fmt.audio.i_frame_length = 1; + p_sys->fmt.audio.i_blockalign = p_sys->fmt.audio.i_bytes_per_frame; + p_sys->fmt.i_bitrate = 8 * p_sys->fmt.audio.i_rate + * p_sys->fmt.audio.i_bytes_per_frame; + break; + + default: + msg_Dbg( p_demux, "Unsupported block type %u", (unsigned)*p_buf); + return VLC_EGENERIC; + } + p_sys->fmt.i_extra = 0; + p_sys->fmt.p_extra = NULL; + + msg_Dbg( p_demux, "fourcc: %4.4s, channels: %d, " + "freq: %d Hz, bitrate: %dKo/s, blockalign: %d, bits/samples: %d", + (char *)&p_sys->fmt.i_codec, p_sys->fmt.audio.i_channels, + p_sys->fmt.audio.i_rate, p_sys->fmt.i_bitrate / 8192, + p_sys->fmt.audio.i_blockalign, p_sys->fmt.audio.i_bitspersample + ); + + p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt ); + + date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 ); + date_Set( &p_sys->pts, 1 ); + + return VLC_SUCCESS; + +error: + msg_Err( p_demux, "Unsupported or malformatted file" ); + free( p_sys ); + return VLC_EGENERIC; +} + +/***************************************************************************** + * Demux: read packet and send them to decoders + ***************************************************************************** + * Returns -1 in case of error, 0 in case of EOF, 1 otherwise + *****************************************************************************/ +static int Demux( demux_t *p_demux ) +{ + demux_sys_t *p_sys = p_demux->p_sys; + block_t *p_block; +#if 0 + int64_t i_offset; + + i_offset = stream_Tell( p_demux->s ); + + if( p_sys->i_data_size > 0 && + i_offset >= p_sys->i_data_offset + p_sys->i_data_size ) + { + /* EOF */ + return 0; + } +#endif + p_block = stream_Block( p_demux->s, p_sys->fmt.audio.i_bytes_per_frame ); + if( p_block == NULL ) + { + msg_Warn( p_demux, "cannot read data" ); + return 0; + } + + p_block->i_dts = p_block->i_pts = + date_Increment( &p_sys->pts, p_sys->fmt.audio.i_frame_length ); + + es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts ); + + es_out_Send( p_demux->out, p_sys->p_es, p_block ); + + return 1; +} + +/***************************************************************************** + * Close: frees unused data + *****************************************************************************/ +static void Close ( vlc_object_t * p_this ) +{ + demux_sys_t *p_sys = ((demux_t *)p_this)->p_sys; + + free( p_sys ); +} + +/***************************************************************************** + * Control: + *****************************************************************************/ +static int Control( demux_t *p_demux, int i_query, va_list args ) +{ + demux_sys_t *p_sys = p_demux->p_sys; + + if( i_query == DEMUX_SET_POSITION ) + return VLC_EGENERIC; /* not implemented yet */ + + return demux2_vaControlHelper( p_demux->s, 0, -1, p_sys->fmt.i_bitrate, + p_sys->fmt.audio.i_blockalign, + i_query, args ); +}